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HomeMy WebLinkAboutDERR-2025-002265 240813100401_5815e351 6440 S. Millrock Drive Suite 300 Holladay, UT 84121 United States T +1385.474.8500 www.jacobs.com February 25, 2025 Attn: Kelsey Robinson UDEQ-DERR 195 North 1950 West Salt Lake City, UT 84114 Subject: 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Civil Action No. 1:06-cv-00115 BSJ Ms. Robinson, This annual groundwater monitoring report for 2024 is being submitted by Jacobs on behalf of Union Pacific Railroad (UPRR) for Operable Units (OUs) 1 and 4 at the UPRR Ogden Railroad facility in Ogden, Utah (site) (Figure 1). This report summarizes the activities and results of the 2024 annual and biennial sampling events for the site. All field work was completed to adhere to the Consent Decree1 for the site. Field activities were performed in accordance with the Quality Assurance Project Plan, Union Pacific Ogden Railroad Facility, Operable Units 1 and 4 (QAPP).2 The Remedial Investigation Report3 and the 2013 Annual Groundwater Monitoring Report, Operable Units 1 and 44 contain site background and historical data, respectively. The primary focus of the groundwater monitoring program is to monitor temporal changes in the groundwater plumes, which mainly consist of chlorinated volatile organic compounds (CVOCs) in OU-4 and petroleum hydrocarbons in OU 1. 1. Groundwater Gauging and Monitoring Activities In accordance with the QAPP, biennial and annual groundwater monitoring activities were conducted at the site from May 6 through May 10, 2024. 1.1 Biennial Events The following activities were performed at OUs 1 and 4 as part of the biennial groundwater monitoring event:  Gauging of depth to groundwater and nonaqueous phase liquid (NAPL) at 10 monitoring wells in OU 1, 11 monitoring wells in OU 4 North, and 6 monitoring wells in OU 4 South.  Monitoring wells 33-MW8 (OU 1) and 34-MW6 (OU 4 North) could not be located and were replaced by 33-MW12FP and 22a-MW1, respectively for both gauging and sampling. An email was sent on May 7, 2024, to UDEQ requesting well substitutions and approval was received (via email) on the same day. Table 1 lists the wells that can no longer be sampled and the existing wells to be used as substitutes. 1 United States Environmental Protection Agency (EPA). 2006. Consent Decree for Remedial Design/Remedial Action. Ogden Rail Yard Site, Ogden, Utah. December. 2 CH2M HILL, Inc. 2016. Quality Assurance Project Plan, Union Pacific Ogden Railroad Facility, Operable Units 1 and 4. Union Pacific Railroad. Ogden, Utah. August. 3 Forrester Group. 2003. Remedial Investigation Report. Union Pacific Railroad. Ogden, Utah. Final. September. 4 CH2M HILL, Inc. 2014. 2013 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad. Ogden, Utah. January. 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Civil Action No. 1:06-cv-00115 BSJ 240813100401_5815e351 2  Due to damage to monitoring well 34-MW1 (OU 4 North), depth to groundwater could not be collected; however, a groundwater sample was collected. No repair work was completed. The dedicated sample tubing was already deployed in the well and was used to collect a representative groundwater sample.  Due to ponded water monitoring well 34-MW8 (OU 4 North) depth to groundwater could not be collected at the same time as the OU 4 North wells. Depth to groundwater was collected after the ponded water subsided, which was done prior to purging the well for sample collection.  Groundwater samples were collected from 8 monitoring wells at OU 1, 10 monitoring wells at OU 4 North, and 6 monitoring wells from OU 4 South. In OU 1, two wells (33-MW2FP and 33-MW4FP) scheduled for biennial sampling contained dense hydrocarbon NAPL and were not sampled. In OU 1 and OU 4, monitoring wells 33-MW8 (OU 1) and 34- MW6 (OU 4 North) could not be located and were replaced by 33-MW12FP and 22a-MW1, respectively. In OU 4, 38-MW12 contained hydrocarbon light nonaqueous phase liquid (LNAPL) and could not be sampled. In 2023, well 34-MW6 was attempted to be located by a Utah licensed land surveyor. The well could not be located. The well is in the vicinity of a new modular building and is likely under the concrete pad poured for the building. Fluid level measurements collected at OU 1 and OU 4 during the 2024 biennial groundwater monitoring event, along with historical fluid level measurements, are presented in Tables 2 (OU 1), 3 (OU 4 North), and 4 (OU 4 South). Data collected before 2018 are presented in previous reports. In wells where LNAPL was detected, groundwater surface elevations were corrected to account for the presence of product. Groundwater potentiometric surface maps for the biennial groundwater monitoring event at OUs 1 and 4 are presented on Figures 2 through 4. Locations of the monitoring wells gauged and sampled at OUs 1 and 4 during this period are also included on Figures 2 through 4. Groundwater flow directions for each OU were consistent with previous years. Groundwater samples from OU 1 were analyzed for polycyclic aromatic hydrocarbons (PAHs) (Table 5) and volatile organic compounds (VOCs) plus total extractible petroleum hydrocarbon as diesel (Table 6). Samples from OU 4 were analyzed for monitored natural attenuation (MNA) parameters (Tables 7 and 8) and VOCs (Tables 9 and 10). Groundwater concentrations were compared with the U.S. Environmental Protection Agency maximum contaminant levels (MCLs) for drinking water5 where established. Vinyl chloride concentrations for this event are shown on Figure 3 for the OU 4 North CVOC plume and Figure 4 for the OU 4 South CVOC plume. Sampling field logs and laboratory reports are presented in Attachments 1 and 2, respectively, and data validation reports are included in Attachment 3. The laboratory analytical results were determined to be acceptable with the qualifications summarized in the data validation report and as shown in the tables. Results are discussed in Section 2. 1.2 Annual Events In addition to the biennial activities, annual long-term monitoring activities for the site were conducted during the biennial event. In accordance with the QAPP, the Weber River and monitoring wells 34-MW8 and 34-MW10 were gauged to determine whether the Weber River is a losing or gaining stream in the vicinity of those two wells. Results of the gauging activities demonstrated that the Weber River was a gaining stream with respect to 34-MW10 (Table 3). Consequently, groundwater samples were collected from 34-MW8 and 34-MW10. 5 U.S. Environmental Protection Agency. 2020. National Primary Drinking Water Regulations. November. 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Civil Action No. 1:06-cv-00115 BSJ 240813100401_5815e351 3 A surface water sample was collected from the southeastern edge of Goode Lake on May 7, 2024. The sample was analyzed for VOCs. The sample results are included in Table 6. All analytes were below detection. The annual inspection of the coffer dam will be completed in September 2024. Observations of the appearance and condition of each component will be documented in a separate letter to the UDEQ. 2. Results 2.1 Operable Unit 1 Measurements of hydrocarbon NAPL elevations and thicknesses in OU 1 monitoring wells are listed in Table 2. For this biennial event, four wells with past detections of dense nonaqueous phase liquid (DNAPL) presence were scheduled for gauging as follows:  Well 33-MW1FP was abandoned on September 19, 2023, and replaced by 33-MP2.  DNAPL was detected in wells 33-MW2FP and 33-MW4FP, with thicknesses of 0.09 foot and trace, respectively.  LNAPL was not detected during this event. At OU 1, benzo(a)pyrene is the only PAH compound with an MCL. This compound has had no exceedances above the MCL since 2014. No samples collected from the 2024 biennial sampling round had detections of benzo(a)pyrene above the MCL (Table 5). In 2024, benzene was detected at concentrations exceeding the MCL in two wells, both of which have historically exceeded the MCL (Table 6). Ethylbenzene and vinyl chloride concentrations did not exceed the MCL in any OU 1 wells. Total petroleum hydrocarbons as diesel-range organics were detected in three wells (33-MW6, 33- MW6FP, and 33-MW10FP) at concentrations above the Utah Department of Environmental Quality (UDEQ) initial screening level (1 milligram per liter [mg/L]). All three wells previously had concentrations above the initial screening level. A low-level detection of benzene (0.137 J microgram per liter [μg/L]) was detected in the sample from Goode Lake. Benzene was previously detected in a sample from Goode Lake in 2023 (0.238 J μg/L). 2.2 Operable Unit 4 North Plume As shown in Table 9, vinyl chloride was detected in well 22a-MW1 (replacement well for 34-MW6) at 6.31 μg/L, exceeding the MCL of 2 μg/L. This is the initial sampling event for well 22a-MW1, therefore, there are no previous data for this well that can be used to evaluate if concentrations are increasing or decreasing. The vinyl chloride concentration in 22a-MW6 was non-detect compared to the detection of 91.1 μg/L in 2022. The 2024 concentrations of vinyl chloride within the OU 4 North Plume source area are overall lower than their previous peak concentrations, and source area concentrations exhibit a decreasing trend when analyzed over a broader period. At 22a-MW6, for instance, the vinyl chloride concentration in 2024 is non-detect compared to 91.1 μg/L in 2022 and the historical high concentration of 3,400 μg/L in 2009. Figure 3 shows the vinyl chloride concentrations for wells in the OU 4 North Plume area. During the 2024 sampling event, 1,1,1-trichloroethane (1,1,1-TCA) was detected in one well (22a-MW6) in the OU 4 North Plume at a concentration of 1.29 J μg/L. This value is lower than the concentration observed in 2022 (45.7 μg/L), and below the historical high concentration (160 μg/L in 2012) and the MCL (200 μg/L). 1,1,1-TCA was not detected in any other OU 4 North Plume monitoring wells sampled in 2024. 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Civil Action No. 1:06-cv-00115 BSJ 240813100401_5815e351 4 Table 7 summarizes the geochemical and field MNA parameters for the OU 4 North Plume. The consistently low dissolved oxygen (DO) concentrations within the OU 4 North Plume area are indicative of anaerobic conditions. In addition, negative oxidation reduction potential (ORP) readings indicate that the groundwater is generally under reducing conditions. Elevated concentrations of methane from wells within the North Plume area also suggest the presence of reducing conditions. Methane concentrations above 1 mg/L are desirable, but not required, for dechlorination to occur.6 These results suggest that the groundwater chemistry of the North Plume area is conducive to reductive dechlorination of chlorinated compounds. Figure 5 shows side by side the 2022 and 2024 OU 4 North vinyl chloride plumes with 2, 10, and 100 μg/L concentration contours. Figure 5 also shows the area (in square feet [ft2]) of each plume contour from 2022 and 2024. The areal extent changes for the plume contours from 2022 to 2024 are as follows:  The 2 μg/L plume contour decreased by 21,678 ft2.  The 10 μg/L plume contour decreased by 75,721 ft2.  The 100 μg/L plume contour decreased by 46,690 ft2. 2.3 Operable Unit 4 South Plume VOC results for the OU 4 South Plume are summarized in Table 10. Vinyl chloride concentrations in 2024 were generally similar to or lower than those observed in 2022. The vinyl chloride concentration in well 30-MW1 continues to be below the MCL. The vinyl chloride concentration in 30-MW6D has continued to decrease over the past four monitoring events from 40.6 (2018), to 13.3 (2020), to 11.0 (2022), to 9.88 μg/L (2024). Table 8 summarizes the geochemical and field MNA parameters for the OU 4 South Plume. Conditions observed in the South Plume were similar to those observed in the North Plume. DO was consistently low, indicating anaerobic conditions; and universally negative ORP readings and elevated methane concentrations are indicative of reducing conditions. These results suggest conditions in the South Plume continue to be favorable for reductive dechlorination. Figure 6 shows side by side the 2022 and 2024 OU 4 South vinyl chloride plumes with 2 and 10 μg/L concentration contours. Figure 6 also shows the area (in ft2) of each plume contour from 2022 and 2024. With the decrease in vinyl chloride concentration below 10 μg/L at well 30 MW6D in 2024, no vinyl chloride detections exceed 10 μg/L. This removed the 10 μg/L plume contour that had an area of 103,832 ft2 in 2022. The 2 μg/L plume contour had no change is size from 2022 to 2024. The maximum vinyl chloride concentration in the OU 4 South Plume, measured at well 30-MW6D, decreased from 11.0 μg/L to 9.88 μg/L between 2022 and 2024, respectively. 3. Conclusions The remedial objectives from the record of decision (ROD) for OU 1 are being achieved. The institutional controls (ICs) to prevent groundwater use are still in place for OUs 1 and 4. In OU 1, the coffer dam is still intact and the collection sumps have not produced any DNAPL to date. The DNAPL was removed to the extent possible. The monitoring has shown the groundwater conditions in OU 4 are favorable for NA. Both the OU 4 North and South solvent plumes have receded from receiving waters and therefore no contingency plans are needed currently. 6 Interstate Technology Regulatory Council. 2008. In Situ Bioremediation of Chlorinated Ethene: DNAPL Source Zones. June. 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Civil Action No. 1:06-cv-00115 BSJ 240813100401_5815e351 5 4. Path Forward The next monitoring event for the site is the 2025 annual sampling event. The annual event will consist of gauging the Weber River and wells 34-MW8 and 34-MW10, sampling wells 34-MW8 and 34-MW10 if the river is gaining, and surface water sampling of Goode Lake. The annual report will be completed following the completion of the sampling event. If you have questions or need additional information, please feel free to call me at (385) 474-8535. Sincerely, Jacobs Terence Mares Project Manager cc: Becky Rewey/UPRR Patrick Marty/Jacobs Enclosures Tables 1 Damaged Monitoring Well Substitutes 2 Operable Unit 1 Fluid Level Measurements 3 Operable Unit 4 North Fluid Level Measurements 4 Operable Unit 4 South Fluid Level Measurements 5 Operable Unit 1 Analytical Results—PAHs 6 Operable Unit 1 Analytical Results— VOCs and TEPH Diesel 7 Operable Unit 4 North MNA Parameters and Measured Field Parameters 8 Operable Unit 4 South MNA Parameters and Measured Field Parameters 9 Operable Unit 4 North Analytical Results—CVOC 10 Operable Unit 4 South Analytical Results—CVOC Figures 1 Site Location Map 2 Operable Unit 1 Monitoring Well Location and Groundwater Potentiometric Surface Map 3 OU 4 North CVOC 2024 Plume Area 4 OU 4 South CVOC 2024 Plume Area 5 OU 4 North Spring 2022 and 2024 CVOC Plume Areas 6 OU 4 South Spring 2022 and 2024 CVOC Plume Areas Attachments 1 Field Logs 2 Laboratory Reports 3 Data Validation Report Tables Table 1. Damaged Monitoring Well Substitutes 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Damaged Well ID Operable Unit Sampling Frequency Screen Interval (feet bgs - feet bgs) Reason Damaged Well Replacement ID Current Sampling Frequency Screen Interval (feet bgs - feet bgs) Replacement Reason 33-MW8 OU 1 B 4.7 - 19.7 Could not locate well. 33-MW12FP 5YR 9 - 19 In the vicinity of well and similar total depth. Well to be sampled biennially and every 5 years. 34-MW6 OU 4 North B 5 - 15 Could not locate well. 22a-MW1 5YR Gauge Only 5 - 15 In the vicinity of well. Well to be sampled biennially and gauged every 5 years. 5YR = 5-year B = biennial bgs = below ground surface ID = identification OU = operable unit 240813100401_5815e351 Page 1 of 1 Table 2. Operable Unit 1 Fluid Level Measurements Measuring Point Elevation Depth to LNAPL Depth to Groundwater Depth to DNAPL DNAPL Elevation Minimum DNAPL Thickness (Using Well Total Depths from Boring/Well Construction Logs) Corrected Groundwater Elevation a (feet amsl)(feet)(feet)(feet)(feet amsl)(feet)(feet amsl) 3/15/21 ND 7.49 ND ND ND 4,273.28 5/6/24 ND 5.13 ND ND ND 4,275.64 5/9/16 ND 4.20 24.00 4,256.39 3.50 4,276.19 4/23/18 ND 6.65 24.00 4,256.39 3.50 4,273.74 6/29/20 ND 6.40 23.36 4,257.03 4.14 4,273.99 5/3/22 5/6/24 5/5/16 ND 13.83 Trace Trace Trace 4,274.51 4/23/18 Trace 14.36 ND ND ND 4,273.98 6/29/20 ND 14.44 Trace ND ND 4,273.90 5/3/22 ND 14.70 ND ND ND 4,273.64 5/6/24 ND 12.80 24.90 4,263.44 0.09 4,275.54 5/9/16 ND 6.44 ND ND ND 4,274.93 4/23/18 ND 8.35 ND ND ND 4,273.02 6/30/20 ND 8.18 ND ND ND 4,273.19 5/4/22 ND 8.55 ND ND ND 4,272.82 5/6/24 ND 5.82 ND ND ND 4,275.55 5/9/16 ND 8.86 ND ND ND 4,275.23 4/23/18 Trace 10.87 ND ND ND 4,273.22 6/29/20 Trace 10.45 ND ND ND 4,273.64 5/3/22 ND 11.08 26.16 4,257.93 2.06 4,273.01 5/6/24 ND 8.38 Trace Trace Trace 4,275.71 5/6/16 ND 7.99 ND ND ND 4,272.24 4/23/18 ND 8.88 ND ND ND 4,271.35 6/29/20 ND 8.12 ND ND ND 4,272.11 3/15/21 ND 8.40 23.95 4,256.28 4.27 4,271.83 5/3/22 ND 8.66 ND ND ND 4,271.57 5/6/24 ND 6.69 ND ND ND 4,273.54 5/6/16 ND 10.10 ND ND ND 4,271.78 4/23/18 ND 10.92 ND ND ND 4,270.96 6/29/20 ND 10.71 ND ND ND 4,271.17 5/3/22 ND 10.82 ND ND ND 4,271.06 5/6/24 ND 9.10 ND ND ND 4,272.78 5/6/16 ND 8.84 ND ND ND 4,272.84 4/23/18 ND 10.68 ND ND ND 4,271.00 6/29/20 ND 10.45 ND ND ND 4,271.23 5/3/22 ND 10.65 ND ND ND 4,271.03 5/6/24 ND 8.93 ND ND ND 4,272.75 5/9/16 ND 5.62 ND ND ND 4,275.30 4/23/18 ND 7.95 ND ND ND 4,272.97 6/29/20 ND 7.52 ND ND ND 4,273.40 5/4/22 ND 8.05 ND ND ND 4,272.87 5/6/24 Could not locate the monitoring well. Replaced with 33-MW12FP. 5/6/16 ND 9.22 ND ND ND 4,272.07 4/23/18 ND 11.39 ND ND ND 4,269.90 6/29/20 ND 11.31 ND ND ND 4,269.98 5/3/22 ND 11.12 ND ND ND 4,270.17 5/6/24 ND 9.25 ND ND ND 4,272.04 5/5/16 ND 11.54 ND ND ND 4,275.91 4/23/18 ND 12.85 ND ND ND 4,274.60 6/29/20 ND 12.48 ND ND ND 4,274.97 5/3/22 ND 13.12 ND ND ND 4,274.33 5/6/24 ND 10.39 ND ND ND 4,277.06 3/15/21 ND 9.79 ND ND ND 4,273.89 5/6/24 ND 7.64 ND ND ND 4,276.04 a Groundwater elevations corrected assuming LNAPL density of 0.87, if present. BMP = below measuring point DNAPL = dense nonaqueous phase liquid ID = identification LNAPL = light nonaqueous phase liquid ND = not detected 33-MW10FP 4284.09 4280.92 4281.29 4280.23 4287.45 4283.68 33-MW2FP 4281.37 amsl = above mean sea level 33-MW5FP 4281.88 33-MW6FP 4281.68 33-MW9 33-MW6 33-MW12FP 33-MW8 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah 4288.34 Well ID 33-MW1FP Blockage at 6.9 feet BMP. Product was observed on the probe. 4280.7733-MP2 33-MW4AA 4280.39 Monitoring well abandoned on 9/19/2023. Monitoring well replaced with 33-MP2. Date 33-MW4FP 240813100401_5815e351 Page 1 of 1 Table 3. Operable Unit 4 North Fluid Level Measurements 03/15/21 12.51 ND 4,280.61 ND 05/06/24 9.08 ND 4,284.04 ND 04/23/18 10.65 ND 4,282.08 ND 06/29/20 11.23 ND 4,281.50 ND 05/02/22 11.18 ND 4,281.55 ND 05/06/24 7.55 ND 4,285.18 ND 04/23/18 10.39 ND 4,282.17 ND 06/29/20 10.98 ND 4,281.58 ND 05/02/22 11.00 ND 4,281.56 ND 05/06/24 7.49 ND 4,285.07 ND 04/23/18 12.19 ND 4,276.20 ND 06/29/20 12.68 ND 4,275.71 ND 05/02/22 12.76 ND 4,275.63 ND 05/06/24 Well damaged. Could not collect water level. 04/23/18 12.57 ND 4,275.93 ND 06/29/20 13.43 ND 4,275.07 ND 05/02/22 13.03 ND 4,275.47 ND 05/06/24 9.31 ND 4,279.19 ND 04/23/18 11.74 ND 4,276.18 ND 06/29/20 12.23 ND 4,275.69 ND 05/02/22 12.32 ND 4,275.60 ND 05/06/24 9.31 ND 4,278.61 ND 04/23/18 9.22 ND 4,280.56 ND 06/29/20 9.70 ND 4,280.08 ND 05/02/22 Unable to locate monitoring well. 05/06/24 Unable to locate monitoring well. Replaced with 22a-MW1. 04/23/18 12.15 ND 4,274.04 ND 06/29/20 12.62 ND 4,273.57 ND 05/02/22 12.28 ND 4,273.91 ND 05/06/24 9.5 ND 4,276.69 ND Comments Depth to LNAPLb (feet) Groundwater Elevation (ft amsl) LNAPL Elevation (feet) 34-MW1 4,288.39 34-MW2 4,288.50 4,292.73 Depth to Groundwatera (feet)Date 4,286.19 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah 22a-MW6 4,292.56 22a-MW1 4,293.12 LNAPL Thickness (feet) Reference Point (feet amsl) 22a-MW3 Well ID 34-MW3 4,287.92 34-MW6 4,289.78 34-MW7D 240813100401_5815e351 Page 1 of 3 Table 3. Operable Unit 4 North Fluid Level Measurements Comments Depth to LNAPLb (feet) Groundwater Elevation (ft amsl) LNAPL Elevation (feet) Depth to Groundwatera (feet)Date 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah LNAPL Thickness (feet) Reference Point (feet amsl) Well ID 04/23/18 7.66 ND 4,278.68 ND 09/27/18 8.58 ND 4,277.76 ND 09/30/19 7.86 ND 4,278.48 ND 06/29/20 7.91 ND 4,278.43 ND 09/29/20 8.32 ND 4,278.02 ND 03/15/21 8.23 ND 4,278.11 ND 09/14/21 8.36 ND 4,277.98 ND 05/02/22 7.64 ND 4,278.70 ND 10/06/23 8.02 ND 4,278.32 ND 05/09/24 5.24 ND 4,281.10 ND Could not collect water level on 5/6 due to ponding water in the area. 04/23/18 Dry --0.10 foot of water in end cap. 06/29/20 Dry -- 05/02/22 8.06 ND 4,274.56 ND 05/06/24 4.46 ND 4,278.16 ND 04/23/18 10.69 ND 4,278.62 ND 09/27/18 Dry -- -- 09/30/19 10.82 ND 4,278.49 ND 06/29/20 Dry -- -- 09/29/20 11.21 ND 4,278.10 ND 03/15/21 Dry -- --Mud at bottom of well. 09/14/21 Dry -- -- 05/02/22 10.52 ND 4,278.79 ND 10/06/23 Dry -- -- 05/06/24 8.18 ND 4,281.13 ND 04/23/18 13.13 ND 4,278.55 ND 09/27/18 14.08 ND 4,277.60 ND 09/30/19 13.29 ND 4,278.39 ND 06/29/20 13.92 ND 4,277.76 ND 09/29/20 13.58 ND 4,278.10 ND 03/15/21 13.72 ND 4,277.96 ND 09/14/21 13.63 ND 4,278.05 ND 05/02/22 13.61 ND 4,278.07 ND 10/06/23 13.77 ND 4,277.91 ND 05/06/24 10.90 ND 4,280.78 ND Weber River 34-MW10 4,289.31 34-MW8 4,291.68 34-MW9 4,286.34 4,282.62 240813100401_5815e351 Page 2 of 3 Table 3. Operable Unit 4 North Fluid Level Measurements Comments Depth to LNAPLb (feet) Groundwater Elevation (ft amsl) LNAPL Elevation (feet) Depth to Groundwatera (feet)Date 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah LNAPL Thickness (feet) Reference Point (feet amsl) Well ID 04/23/18 NM 8.40 NM 4,284.64 NM Product too viscous to obtain water level reading; LNAPL at least 0.5 foot thick. 06/29/20 NM 8.82 NM 4,284.22 NM Product too viscous to obtain water level reading; LNAPL at least 2.18 feet thick. 05/02/22 10.82 6.00 4,286.42 4,287.04 4.82 Unable to get exact water level measurement. 05/06/24 NM 5.75 NM 4,287.29 NM Product too viscous to obtain water level reading and product thickness. b If LNAPL present, water elevation corrected for product thickness, assuming product is 0.87 density of water. -- = not applicable ND = not detected NM = present but unable to measure a Depth to groundwater from top of well casing. 38-MW12 4,293.04 amsl = above mean sea level ID = identification LNAPL = light nonaqueous phase liquid 240813100401_5815e351 Page 3 of 3 Reference Point Depth to Groundwater Depth to LNAPLa Groundwater Elevation LNAPL Elevation LNAPL Thickness Well ID (feet amsl) Date (feet) (feet) (feet amsl) (feet amsl) (feet) 04/23/18 6.39 ND 4,301.75 ND 06/29/20 7.27 ND 4,300.87 ND 05/02/22 6.86 ND 4,301.28 ND 05/06/24 4.89 ND 4,303.25 ND 04/23/18 10.82 ND 4,296.54 ND 06/29/20 11.32 ND 4,296.04 ND 05/02/22 11.82 ND 4,295.54 ND 05/06/24 9.51 ND 4,297.85 ND 4/23/18 4.93 ND 4,298.32 ND 06/29/20 5.90 ND 4,297.35 ND 03/15/21 5.35 ND 4,297.90 ND 05/02/22 5.42 ND 4,297.83 ND 05/06/24 4.40 ND 4,298.85 ND 04/23/18 6.46 ND 4,295.89 ND 06/29/20 7.68 ND 4,294.67 ND 05/02/22 6.70 ND 4,295.65 ND 05/06/24 5.02 ND 4,297.33 ND 04/23/18 7.88 ND 4,299.13 ND 06/29/20 8.67 ND 4,298.34 ND 05/02/22 8.12 ND 4,298.89 ND 05/06/24 6.62 ND 4,300.74 ND 04/23/18 8.40 ND 4,300.25 ND 06/29/20 9.30 ND 4,299.35 ND 05/02/22 8.75 ND 4,299.90 ND 05/06/24 7.12 ND 4,301.53 ND aIf LNAPL present, water elevation corrected for product thickness, assuming product is 0.87 density of water. ND = not detected NM = not measured ID = identification LNAPL = light nonaqueous phase liquid amsl = above mean sea level 30-MW6D 4,308.65 26-MW1 4,307.3622b-MW2D 30-MW1 4,302.35 4,307.01 21-MW2 4,308.14 Table 4. Operable Unit 4 South Fluid Level Measurements 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah 26-STMW1 Comments 4,303.25 240813100401_5815e351 Page 1 of 1 Table 5. Operable Unit 1 Analytical Results—PAHs 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (ft bgs - ft bgs) Date 1- M e t h y l n a p h t h a l e n e 2- M e t h y l n a p h t h a l e n e Ac e n a p h t h e n e Ac e n a p h t h y l e n e An t h r a c e n e Be n z o ( a ) a n t h r a c e n e Be n z o ( a ) p y r e n e Be n z o ( b ) f l u o r a n t h e n e Be n z o ( g , h , i ) p e r y l e n e Be n z o ( k ) f l u o r a n t h e n e Ch r y s e n e Di b e n z o ( a , h ) a n t h r a c e n e Fl u o r a n t h e n e Fl u o r e n e In d e n o ( 1 , 2 , 3 - c d ) p y r e n e Na p h t h a l e n e Ph e n a n t h r e n e Py r e n e Units μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L MCL NE NE NE NE NE NE 0.2 NE NE NE NE NE NE NE 0.4 NE NE NE 03/18/21 96.1 0.999 70.3 2.96 10.7 0.360 0.0401 J 0.0428 J <0.0184 <0.0202 0.288 <0.0160 5.45 24.5 <0.0158 22.3 23.3 10.5 05/07/24 9.07 0.762 69.1 2.69 11.3 0.390 0.0559 0.0535 <0.0184 <0.0202 0.322 <0.0160 5.82 24.5 <0.0158 42.9 13.1 9.28 05/09/16 04/23/18 06/30/20 05/03/22 05/06/24 05/05/16 04/23/18 06/29/20 05/10/22 05/06/24 05/09/16 NR NR 64.8 2.1 J 5.9 <0.65 <0.55 <0.60 <0.55 <0.65 <0.55 <0.85 <0.95 23.0 <0.75 425 <20.1 <1.5 04/27/18 NR NR 76.3 3.2 7.2 <0.0099 <0.015 <0.012 <0.020 <0.019 <0.016 <0.028 1.5 26.8 <0.033 616 24.5 1.7 06/30/20 NR 67.1 74.2 2.6 J 6.1 J <3.1 <3.3 <3.5 <3.2 <3.1 <3.3 <3.1 <3.5 23.5 <3.6 166 25.7 <4.0 05/09/22 303 214 139 3.21 9.6 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 1.9 40.4 <0.0158 1,230 41.2 3.12 05/07/24 29.3 18.1 13.7 0.527 0.604 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 0.176 3.25 <0.0158 95.1 2.67 0.358 05/05/16 04/27/18 06/30/20 05/10/22 05/06/24 05/06/16 04/24/18 NR NR 10.7 0.74 0.58 <0.0099 <0.015 <0.012 <0.020 <0.019 <0.016 <0.028 <0.42 4.3 <0.033 <0.23 <0.43 0.67 06/30/20 NR <2.6 <2.9 <2.5 <3.6 <3.1 <3.3 <3.5 <3.2 <3.1 <3.3 <3.1 <3.5 <3.0 <3.6 <2.5 <3.4 <4.0 05/06/22 0.0706 J <0.0674 9.72 0.415 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 0.303 2.16 <0.0158 <0.0917 <0.0180 0.495 05/07/24 <0.0687 <0.0674 0.784 0.0631 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 0.0865 J 0.200 <0.0158 <0.0917 <0.0180 0.145 05/06/16 NR NR 123 4.8 12.0 0.25 <0.010 <0.011 <0.010 <0.012 0.32 J <0.015 4.8 48.6 0.024 J 67.3 51.1 5.8 04/24/18 NR NR 99.0 4.7 12.4 <0.094 <0.14 <0.11 <0.19 <0.18 <0.15 <0.27 3.4 J 37.9 <0.31 1.0 J 32.6 6.0 07/01/20 NR 3.2 J 106 3.2 J 8.8 J <3.1 <3.3 <3.5 <3.2 <3.1 <3.3 <3.1 4.0 J 33.6 <3.6 <2.5 45.3 7.1 J 05/06/22 248 46.0 153 5.55 14.9 0.197 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 5.00 59.1 <0.0158 36.3 J 77.6 8.38 05/07/24 314 60.7 177 5.48 15.5 0.24 <0.0184 <0.0168 <0.0184 <0.0202 0.203 <0.0160 5.35 48.1 <0.0158 407 83.1 8.45 05/06/16 NR NR 73.9 3.4 10.2 0.33 0.13 0.072 J 0.078 J 0.057 J 0.34 <0.010 4.8 26.8 0.058 J 11.1 22.7 6.4 04/24/18 NR NR 67.6 3.0 10.6 0.28 J <0.070 <0.055 <0.095 <0.090 0.30 J <0.14 4.1 29.0 <0.16 2.5 23.0 6.6 07/01/20 NR <2.8 66.4 <2.7 8.4 J <3.3 <3.4 <3.6 <3.4 <3.2 <3.4 <3.3 4.4 J 23.9 <3.8 19.9 22.4 8.3 J 05/06/22 103 <0.0674 95.1 2.92 10.2 0.289 <0.0184 <0.0168 <0.0184 <0.0202 0.305 <0.0160 4.61 32.8 <0.0158 11.5 28.2 8.32 05/08/24 140 0.528 113 3.16 12.9 0.345 0.0456 J 0.0521 <0.0184 <0.0202 0.36 <0.0160 5.12 40.0 <0.0158 7.61 31.4 8.04 No sample collected due to product. No sample collected due to product. No sample collected due to product. Monitoring well abandoned on 9/19/2023. Monitoring well replaced by 33-MP2. 18 - 23 21 - 26 13 - 18 33-MW4AA 33-MW5FP 33-MW6FP 33-MW6 7 - 12 6 - 21 33-MP2 10.4 - 15.4 33-MW4FP 22 - 27 33-MW1FP 33-MW2FP No sample collected due to product in purge water. No sample collected due to product in purge water. No sample collected due to product in purge water. No sample collected due to product in purge water. 3 - 25 No sample collected. Blockage at 6.9 feet below the measuring point. No sample collected due to product in purge water. No sample collected due to product. No sample collected due to product. No sample collected due to product. No sample collected due to product. No sample collected due to product in purge water. No sample collected due to low water level. PPS0211221553SLC Page 1 of 2 Table 5. Operable Unit 1 Analytical Results—PAHs 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (ft bgs - ft bgs) Date 1- M e t h y l n a p h t h a l e n e 2- M e t h y l n a p h t h a l e n e Ac e n a p h t h e n e Ac e n a p h t h y l e n e An t h r a c e n e Be n z o ( a ) a n t h r a c e n e Be n z o ( a ) p y r e n e Be n z o ( b ) f l u o r a n t h e n e Be n z o ( g , h , i ) p e r y l e n e Be n z o ( k ) f l u o r a n t h e n e Ch r y s e n e Di b e n z o ( a , h ) a n t h r a c e n e Fl u o r a n t h e n e Fl u o r e n e In d e n o ( 1 , 2 , 3 - c d ) p y r e n e Na p h t h a l e n e Ph e n a n t h r e n e Py r e n e Units μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L MCL NE NE NE NE NE NE 0.2 NE NE NE NE NE NE NE 0.4 NE NE NE 05/09/16 NR NR 28.9 1.1 J 2.7 <0.26 <0.22 <0.24 <0.22 <0.26 <0.22 <0.34 <0.38 11.4 <0.30 150 7.2 J <0.60 04/27/18 NR NR 15.6 0.97 1.7 <0.010 <0.016 <0.012 <0.021 <0.020 <0.017 <0.030 0.50 J 6.2 <0.034 20.0 <0.55 UJ 0.58 06/30/20 NR <2.8 3.1 J <2.7 <3.7 <3.3 <3.4 <3.6 <3.4 <3.2 <3.4 <3.3 <3.7 <3.2 <3.8 <2.6 <3.5 <4.2 05/09/22 <0.0687 <0.0674 1.54 0.0816 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 0.161 0.575 <0.0158 <0.0917 0.0216 J 0.312 05/06/24 05/06/16 NR NR 0.35 J <0.011 <0.0090 <0.0070 <0.010 <0.019 <0.0090 <0.0050 <0.011 <0.011 <0.094 0.093 J <0.011 <0.078 J <0.15 J 0.10 J 04/24/18 NR NR 0.067 J <0.0094 <0.0081 <0.0094 <0.014 <0.011 <0.019 <0.018 <0.015 <0.027 <0.016 <0.010 <0.031 <0.017 <0.12 UJ <0.015 07/01/20 NR <2.6 <2.9 <2.5 <3.6 <3.1 <3.3 <3.5 <3.2 <3.1 <3.3 <3.1 <3.5 <3.0 <3.6 <2.5 <3.4 <4.0 05/06/22 <0.0687 <0.0674 0.0836 <0.0171 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 <0.0270 <0.0169 <0.0158 <0.0917 <0.0180 0.0243 J 05/07/24 <0.0687 <0.0674 0.0836 <0.0171 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 <0.0270 <0.0169 <0.0158 <0.0917 <0.0180 0.0212 J 05/05/16 NR NR 38.8 J 1.9 J 4.6 J 0.47 J 0.24 J 0.095 0.14 0.13 0.58 J 0.042 J 5.3 J 27.7 J 0.084 J <0.24 J 9.1 J 5.8 J 04/26/18 NR NR 34.8 2.8 4.7 0.35 J <0.015 0.046 J <0.020 0.022 J 0.31 <0.028 4.2 25.6 <0.033 61.4 19.7 6.1 06/30/20 NR 10.0 34.9 <2.5 3.9 J <3.1 <3.3 <3.5 <3.2 <3.1 <3.3 <3.1 4.2 J 23.7 <3.6 136 15.6 6.5 J 05/06/22 33.2 <0.0674 50.0 1.50 6.42 0.286 <0.0184 <0.0168 <0.0184 <0.0202 0.251 <0.0160 4.87 35.1 <0.0158 0.207 J 22.0 7.42 05/06/24 104 82.0 83.0 4.91 11.3 0.401 0.0855 0.0740 0.0302 J 0.0215 J 0.400 <0.0160 6.52 54.9 <0.0158 541 60.5 11.3 J+ 03/17/21 <0.0687 <0.0674 <0.0190 <0.0171 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 <0.0270 <0.0169 <0.0158 <0.0917 <0.0180 <0.0169 05/07/24 0.276 0.137 J 0.09 <0.0171 <0.0190 <0.0203 <0.0184 <0.0168 <0.0184 <0.0202 <0.0179 <0.0160 <0.0270 <0.0169 <0.0158 1.34 <0.0180 <0.0169 Bold Type = Analyte detected greater than the MCL J+ = Estimated value between the reporting limit and the method detection limit with an implied high bias. < = Less than the method detection limit MCL = Maximum Contaminant Level (the maximum concentration of the contaminant allowable by the EPA in drinking water) μg/L = microgram(s) per liter NE = Not Established bgs = below ground surface NR = Not Reported EPA = United States Environmental Protection Agency PAH = polycyclic aromatic hydrocarbon ID = Identification RL = reporting limit J = The analyte is an estimated value between the reporting limit and the method detection limit. UJ = Estimated detection limit. The result is estimated and may be a false negative due to related quality control problems. 8 - 1833-MW9 33-MW10FP 19 - 24 33-MW8 4.7 - 19.7 Could not locate well. Replaced with 33-MW12FP. 33-MW12FP 9 - 19 PPS0211221553SLC Page 2 of 2 Table 6. Operable Unit 1 Analytical Results—VOCs and TEPH Diesel 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date TE P H D i e s e l Be n z e n e Et h y l b e n z e n e Vi n y l c h l o r i d e Units mg/L μg/L μg/L μg/L MCL 1 b 5 700 2 03/17/21 <0.0222 4.77 30.0 <0.234 05/07/24 0.936 J 3.37 25.3 <0.234 03/07/11 6.3 20 69 <0.11 UJ 05/30/12 1.1 39 50 <0.11 05/09/16 04/23/18 06/30/20 05/03/22 05/06/24 05/05/16 04/23/18 06/30/20 05/10/22 05/06/24 03/08/11 6.7 8.7 280 <0.11 05/30/12 3.8 11 300 <0.11 05/12/14 1.8 J 8.3 350 <0.11 05/09/16 2.6 9.3 250 <0.13 04/27/18 3.7 9.5 J 265 <2.6 06/30/20 2.4 6.8 105 <0.19 05/09/22 4.62 10.4 284 <0.234 05/07/24 0.469 J <0.941 19.3 <2.34 05/09/16 04/27/18 06/30/20 05/10/22 05/06/24 05/06/16 04/24/18 <0.46 UJ 0.50 J 1.6 <0.13 06/30/20 <0.37 <0.079 <0.12 <0.11 03/16/21 05/06/22 0.147 <0.0941 <0.137 <0.234 05/07/24 0.0652 J <0.0941 <0.137 <0.234 05/06/16 2.1 63.6 222 <0.13 04/24/18 2.2 54.4 204 <1.3 07/01/20 1.5 47.6 173 <0.55 05/06/22 4.13 58.9 157 <0.234 05/07/24 3.34 58.7 194 <1.17 05/06/16 0.84 19.2 51.1 <0.13 04/24/18 1.4 12.8 32.9 <0.13 07/01/20 1.2 11.0 17.8 <0.11 05/06/22 1.62 13.7 11.4 <0.234 05/08/24 1.34 J 21.4 26.9 <0.234 05/09/16 0.99 1.6 59.6 <0.13 04/27/18 0.67 0.81 J 15.2 <0.13 06/30/20 0.42 J 0.11 J <0.12 <0.11 05/09/22 0.343 J <0.0941 <0.137 <0.234 05/06/24 33-MW2FP No sample collected due to product. 33-MW4AA No sample collected due to product. No sample collected due to product. 6 - 21 No sample collected due to product. 7 - 12 No sample collected due to product in purge water. 33-MW6 33-MW5FP 21 - 26 No sample collected due to product. No sample collected due to low water level. No sample collected due to product. 18 - 23 Monitoring well abandoned on 9/19/2023. Monitoring well replaced with 33-MP2. No sample collected. Blockage at 6.9 feet below the measuring point. No sample collected due to product. No sample collected due to product. 22 - 2733-MW4FP 33-MW6FP 13 - 18 33-MW8 4.7 - 19.7 No sample collected due to product in purge water. No sample collected due to product. Could not locate monitoring well. Replaced with 33-MW12FP. 33-MP2 10.4 - 15.4 3- 2533-MW1FP No sample collected due to product in purge water. No sample collected due to product. No sample collected due to product. 240813100401_5815e351 Page 1 of 2 Table 6. Operable Unit 1 Analytical Results—VOCs and TEPH Diesel 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date TE P H D i e s e l Be n z e n e Et h y l b e n z e n e Vi n y l c h l o r i d e Units mg/L μg/L μg/L μg/L MCL 1 b 5 700 2 05/06/16 <0.043 <0.080 <0.18 <0.13 04/24/18 <0.39 UJ <0.060 <0.18 <0.13 07/01/20 <0.39 <0.079 <0.12 <0.11 05/06/22 0.0604 J <0.0941 <0.137 <0.234 05/07/24 <0.0222 J <0.0941 <0.137 <0.234 05/05/16 0.76 0.77 J 11.8 <0.13 04/26/18 1.2 1.2 J 7.8 <0.65 06/30/20 0.99 0.57 J 4.7 J <0.19 05/06/22 1.75 0.782 J 10.0 <0.234 05/06/24 2.4 1.00 J 11.8 <0.234 03/17/21 0.0548 J <0.0941 0.191 J <0.234 05/07/24 0.314 J <0.0941 <0.137 <0.234 02/01/21 -- <0.0941 <0.137 <0.234 03/17/21 -- <0.0941 <0.137 <0.234 05/06/22 -- 0.109 J <0.137 <0.234 10/19/23 -- 0.238 J 0.235 J <0.234 05/07/24 -- 0.137 J <0.137 <0.234 aGoode Lake sample is not analyzed for TEPH Diesel. bUtah Department of Environmental Quality Initial Screening Level for total petroleum hydrocarbons—diesel < = Less than the method detection limit μg/L = microgram(s) per liter bgs = below ground surface EPA = U.S. Environmental Protection Agency ID = Identification J = Estimated value between the reporting limit and the method detection limit. mg/L = milligram(s) per liter TEPH = Total Extractable Petroleum Hydrocarbons UJ = Estimated detection limit. The result is estimated and may be a false negative due to related quality control problems. VOC = volatile organic compound 8 - 18 Surface Sample 33-MW10FP 19 - 24 33-MW9 MCL = Maximum Contaminant Level (the maximum concentration of the contaminant allowable by EPA in drinking water) Goode Lakea 9 - 1933-MW12FP 240813100401_5815e351 Page 2 of 2 Table 7. Operable Unit 4 North MNA Parameters and Measured Field Parameters 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date Su l f a t e Ch l o r i d e Al k a l i n i t y a s Ca C O 3 Ni t r a t e Me t h a n e Et h a n e Et h e n e pH Electrical Conductivity Ferrous Iron Dissolved Oxygen Oxidation- reduction Potential Units mg/L mg/L mg/L mg/L μg/L μg/L μg/L mS/cm mg/L mg/L mV 5/8/24 21.8 J- 234 642 <0.050 2,650 <4.26 13.1 6.90 1.9 3.30+ 0.48 -121.6 4/26/18 2.2 220 628 0.069 J 1650 5.0 J <0.68 7.32 1.583 1.70 0.52 -87.5 7/2/20 10.1 359 578 0.064 J 484 <5.0 <4.1 6.57 1.988 2.22 4.09 -14.9 5/6/22 13.5 294 568 <0.050 61.7 <4.07 <4.26 6.77 1.932 2.00 2.68 59.8 5/9/24 82.4 24.4 605 18.9 <2.91 <4.07 <4.26 7.09 1.156 0.17 6.55 115.2 5/10/16 138 26.5 358 15.6 5.0 J <0.77 <0.87 6.65 1.08 0.71 2.81 144.3 4/26/18 45.6 259 498 4.9 J 982 10.1 38.9 6.8 1.816 0.83 0.63 15.6 7/1/20 28.0 361 546 0.24 J- 189 J 9.1 J 26.8 J 6.57 2.019 3.30+ 0.41 -50.1 5/6/22 25.5 397 552 <0.050 304 4.24 J 14.3 6.77 2.267 2.50 0.28 -95.8 5/9/24 47.7 J 92.8 399 13.3 <2.91 <4.07 <4.26 6.74 1.001 0.23 1.65 130.2 5/10/16 76.8 382 516 4.0 5.9 J <0.77 <0.87 6.99 2.333 0.00 3.79 180.4 4/26/18 26.8 516 548 2.7 J 28.1 <4.9 <0.68 7.1 2.481 0.00 1.56 92.7 7/1/20 29.0 640 641 0.22 J- 193 <5.0 <4.1 6.7 2.653 0.59 0.16 7.9 5/4/22 33.1 786 616 0.435 186 <4.07 <4.26 6.92 3.14 1.00 0.58 -34.2 5/8/24 40.8 245 205 3.26 <2.91 <4.07 <4.26 7.16 1.225 0.91 3.84 123.3 5/11/16 12.2 39.7 169 <0.050 432 <0.77 <0.87 7.24 0.45 1.11 0.61 -85.8 4/26/18 45.4 691 624 R 60.7 <4.9 <0.68 6.83 3.286 3.26 0.25 -77.1 7/1/20 36.8 721 621 R 98.6 <5.0 <4.0 6.68 2.878 2.57 0.55 -38.3 5/5/22 73.5 897 646 <0.050 126 <4.07 <4.26 6.69 3.753 1.00 0.45 -66.2 5/8/24 91.8 156 376 <0.050 129 <4.07 <4.26 7.04 1.289 3.30+ 0.83 -126.5 5/10/16 42.2 651 399 1.4 20.5 <0.77 <0.87 6.96 2.892 NA 2.49 -50 4/25/18 29.1 651 595 0.41 242 <4.9 <0.68 7.35 2.907 3.30+ 0.56 -2.2 7/1/20 25.2 560 576 0.61 J- 128 <5.0 <4.1 6.71 2.486 0.87 0.67 -24.8 5/5/22 30.1 745 604 0.953 438 10.3 J <4.26 6.68 3.283 2.00 0.61 -103.7 5/6/24 36.3 324 418 3.6 <2.91 <4.07 <4.26 6.99 1.820 0.20 2.42 10.2 5/13/16 14.7 238 567 0.82 1500 5.8 J 0.97 J 6.75 1.788 3.30+ 4.39 -81.9 4/26/18 42.7 352 605 R 1490 10.5 13.0 6.86 2.266 2.57 0.69 -94.4 7/2/20 19.2 226 574 0.067 J 1790 12.2 <4.1 6.63 1.721 0.92 0.10 -79.7 5/2/2022 Unable to locate monitoring well. 5/6/24 Unable to locate monitoring well. Replaced with 22a-MW1 5/12/16 33.8 696 532 0.76 510 2.4 J <0.87 6.83 2.949 3.20 2.76 -98.1 4/26/18 35.6 631 585 R 368 <4.9 <0.68 8.05 2.666 3.30+ 0 -104.3 7/1/20 23.9 569 555 0.063 J 441 <5.0 <4.1 6.98 2.408 0.66 0.31 -89.8 5/5/22 27.1 698 619 <0.050 660 <4.07 <4.26 6.73 3.148 3.00 0.39 -107.0 5/8/24 97.3 J- 445 639 <0.050 669 <4.07 <4.26 6.92 2.718 3.30+ 0.62 -124.9 5/11/16 36.4 651 573 0.15 634 16.7 <0.87 6.72 2.936 3.30+ 1.07 -73.9 9/19/17 24.6 746 542 <0.050 914 13.7 <0.68 6.81 3.471 1.42 0.01 -124.2 9/27/18 22.0 726 597 <0.025 645 6.5 J <2.9 6.83 2.853 3.30 0.41 -150.2 9/30/19 28.4 519 597 0.82 510 J 12.9 J <2.9 7.00 2.683 3.30+ 0.31 -141.8 09/29/20 09/14/21 05/05/22 29.9 488 608 0.315 230 <4.07 <4.26 6.68 2.586 2.50 0.52 -62.1 10/6/23 28.7 478 604 <0.05 477 <0.422 4.6 6.85 2.777 3.30+ 0.38 -110.7 05/09/24 31.8 397 594 1.18 358 <4.07 <4.26 6.88 1.938 3.30+ 0.55 -99.8 5/11/16 18.9 48.1 190 0.058 J 1.6 J <0.77 <0.87 6.89 0.566 NA 3.29 82.4 4/26/18 7/1/20 5/5/22 25.8 664 638 <0.050 353 <4.07 <4.26 6.81 2.961 1.50 1.40 -99.9 5/8/24 34 J- 92.8 308 <0.050 323 <4.07 <4.26 7.09 0.909 0.13 0.69 -22.1 4 - 14 2 - 12 Well is dry. No Sample Collected. 34-MW1 34-MW7D Well is dry. No Sample Collected. 34-MW9 34-MW8 22a-MW3 22a-MW1 34-MW6 34-MW2 34-MW3 22a-MW6 5 - 15 5 - 15 14 - 19 3 - 13 6 - 16 5 - 15 5 - 15 5 - 15 No sample collected. Weber River water level is higher or equal to the 34-MW8 monitoring well water level. No sample collected. Weber River water level is higher or equal to the 34-MW8 monitoring well water level. 240813100401_5815e351 Page 1 of 2 Table 7. Operable Unit 4 North MNA Parameters and Measured Field Parameters 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date Su l f a t e Ch l o r i d e Al k a l i n i t y a s Ca C O 3 Ni t r a t e Me t h a n e Et h a n e Et h e n e pH Electrical Conductivity Ferrous Iron Dissolved Oxygen Oxidation- reduction Potential Units mg/L mg/L mg/L mg/L μg/L μg/L μg/L mS/cm mg/L mg/L mV 5/10/16 25.0 777 622 1.3 746 8.4 J <0.87 6.9 3.646 3.30+ 2.12 -96.4 9/19/17 25.1 690 542 <0.050 389 8.8 J <0.68 6.69 3.367 0.84 0.01 -95.5 9/27/18 Well is Dry. No sample collected. 9/30/19 23.8 519 547 0.79 270 J 7.7 J <2.9 6.89 2.566 3.30+ 0.38 -110.7 09/29/20 09/14/21 5/5/22 28.9 633 628 <0.050 446 <4.07 <4.26 6.74 3.312 3.30+ 0.34 -121.4 10/6/23 Well is Dry. No sample collected. 5/8/24 47.5 663 596 <0.050 638 <4.07 <4.26 6.85 2.697 3.30+ 0.49 -112.8 5/10/16 4/23/18 7/1/20 5/10/22 5/6/24 + = actual value exceeds upper limit of detection MNA = monitored natural attenuation < = less than the reporting limit mS/cm = milliSiemen(s) per centimeter mV = millivolt(s) bgs = below ground surface NM = not analyzed CaCO3 = calcium carbonate R = sample result rejected during data validation ID = identification J = Estimated value between the reporting limit and the method detection limit. J- = Estimated value between the reporting limit and the method detection limit; implied low bias. mg/L = milligram(s) per liter No samples collected due to product. No samples collected due to product. No samples collected due to product in purge water. 34-MW10 4 -14 Well is dry. No sample collected. No samples collected due to product. μg/L = microgram(s) per liter No sample collected. Weber River water level is higher or equal to the 34-MW10 monitoring well water level. 38-MW12 No samples collected due to product. 5 -15 240813100401_5815e351 Page 2 of 2 Table 8. Operable Unit 4 South MNA Parameters and Measured Field Parameters 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs)Date Sulfate Chloride Alkalinity Nitrate Methane Ethane Ethene pH Electrical Conductivity Ferrous Iron Dissolved Oxygen Oxidation- reduction Potential Units mg/L mg/L mg/L as CaCO3 mg/L μg/L μg/L μg/L mS/cm mg/L mg/L mV 5/17/16 NA NA NA NA NA NA NA 6.87 1.406 NA 0.60 -36 4/25/18 NA NA NA NA NA NA NA 7.04 1.226 NA 0.12 -70.1 7/2/20 39.2 174 425 R 17.1 <5.0 <4.1 6.53 1.069 1.34 0.39 -33.9 5/4/22 NA NA NA NA NA NA NA 6.67 1.005 NA 0.37 -78.2 5/10/24 36.4 161 445 <0.050 37.9 <4.07 <4.26 6.98 1.000 1.27 0.61 -71.5 5/13/16 9.6 187 518 0.68 1430 1.2 J <0.77 7.03 1.543 2.77 1.44 -104.5 4/25/18 16.3 173 601 <0.028 1130 <4.9 <0.68 7.09 1.657 2.01 0.18 -97.3 7/2/20 17.7 153 611 0.063 J 2260 <5.0 <4.1 6.71 1.480 2.45 0.10 -67.8 5/4/22 1.93 J 191 618 <0.050 2950 <4.07 <4.26 6.71 1.480 2.45 0.10 -67.8 5/9/24 9.88 J 151 593 <0.050 2210 <4.07 <4.26 7.12 1.241 2.37 0.60 -134.6 5/16/16 13.7 346 434 <0.028 296 <0.87 <0.77 6.98 3.582 0.84 0.93 -48.2 4/25/18 104 126 252 <0.028 10.3 <4.9 <0.68 6.93 1.059 0.62 0.49 -59.8 7/2/20 0.67 J 113 314 R 4170 <5.0 <4.1 7.01 0.835 NA 0.45 -52.8 5/9/22 <0.594 150 319 <0.050 418 <4.07 <4.26 6.91 0.991 1.00 0.44 -91.6 5/9/24 75.3 948 593 <0.050 276 <4.07 <4.26 7.02 3.361 2.34 0.65 -108.0 5/16/16 235 293 442 2.4 86.6 <0.87 <0.77 7.01 4.001 0.00 1.02 32.4 4/25/18 143 409 544 <0.028 40.3 <4.9 <0.68 6.92 2.593 2.93 1.08 -50.8 7/2/20 49.5 269 465 0.061 J 33.2 <5.0 <4.1 6.49 1.500 2.31 0.49 -31.1 5/10/22 61.2 387 550 <0.050 162 <4.07 <4.26 6.58 2.259 2.00 0.55 -54.6 5/9/24 195 237 472 <0.050 79.8 <4.07 <4.26 6.97 1.590 1.85 0.63 -63.3 5/13/16 140 379 496 0.56 367 1.0 J <0.77 6.92 2.212 2.61 1.17 -81.6 4/25/18 33.8 281 533 <0.028 211 <4.9 <0.68 7.16 2.070 1.86 1.08 -59.1 7/2/20 132 337 467 0.33 J-<6.4 <5.0 <4.1 6.77 2.074 0.88 0.09 -23.5 5/4/22 31.1 359 527 <0.050 1010 <4.07 <4.26 6.84 1.933 3.00 0.39 -101.8 5/9/24 243 373 425 2.66 <2.91 <4.07 <4.26 7.02 1.946 0.61 0.65 -36.4 5/13/16 108 255 442 0.54 2310 4.3 J 18.6 6.95 1.828 1.35 0.52 -92.6 4/25/18 46.1 207 481 < 0.028 U 305 J < 4.9 U 2.2 J 6.85 1.563 1.70 0.39 -31.3 7/2/20 67.2 205 478 0.060 J 140 <5.0 <4.1 6.45 1.398 3.30+0.47 -60.6 5/4/22 39.9 222 455 <0.050 1430 <4.07 <4.26 6.87 1.455 2.50 0.36 -102.1 5/9/24 68.6 200 486 <0.050 2060 7.29 J <4.26 7.13 1.346 1.62 0.66 -132 + = Actual value exceeds upper limit of detection MNA = monitored natural attenuation μg/L = microgram(s) per liter mS/cm = milliSiemen(s) per centimeter CaCO3 = calcium carbonate mV = millivolt(s) ID = identification NA = not analyzed mg/L = milligram(s) per liter R = Rejected by data validation J = Estimated value between the reporting limit and the method detection limit. J- = Estimated value between the reporting limit and the method detection limit; implied low bias. 21-MW2 22b-MW2D 30-MW1 30-MW6D 3.5 - 13.5 14 - 19 1.5 - 11.5 26-STMW1 26-MW1 3.5 - 13.5 4 -14 10 - 15 240813100401_5815e351 Page 1 of 1 Table 9. Operable Unit 4 North Analytical Results—CVOCs 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date 1, 1 , 1 - T r i c h l o r o e t h a n e 1, 1 , 2 - T r i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e 1, 2 - D i c h l o r o e t h a n e Be n z e n e Ch l o r o e t h a n e ( E t h y l c h l o r i d e ) Ch l o r o m e t h a n e ( M e t h y l ch l o r i d e ) ci s - 1 , 2 - D i c h l o r o e t h e n e Et h y l b e n z e n e Te t r a c h l o r o e t h e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e Tr i c h l o r o e t h e n e Vi n y l c h l o r i d e Units μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L MCL 200 5 NE 7 5 5 NE NE 70 700 5 100 5 2 05/08/24 <0.149 <0.158 1.73 <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 6.31 05/10/16 <0.11 <0.20 <0.50 <0.20 <0.12 <0.060 <0.015 <0.080 <0.080 <0.18 <0.10 <0.020 <0.17 <0.13 04/26/18 <0.11 <0.20 1.6 <0.20 <0.12 <0.060 <0.15 <0.080 0.21 J <0.18 <0.10 <0.20 <0.17 0.66 J 07/02/20 <0.12 <0.10 0.84 J <0.22 <0.14 <0.079 <0.42 <0.16 <0.17 <0.12 0.25 J <0.17 <0.17 0.19 J 05/04/22 <0.149 <0.158 <0.100 <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 <0.234 05/09/24 <0.149 <0.158 <0.100 <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 0.406 J <0.149 <0.190 <0.234 05/10/16 0.27 J <0.20 2.2 <0.20 <0.12 <0.060 <0.015 <0.080 <0.080 <0.18 <0.10 <0.020 <0.17 1.0 04/26/18 37.6 0.39 J 208 <0.20 <0.12 0.65 J 34.8 <0.080 0.36 J <0.18 0.26 J <0.20 <0.17 215 07/01/20 59.2 <0.50 270 <1.1 <0.70 0.71 J 40.2 <0.80 <0.85 0.90 J <1.1 <0.85 <0.85 264 05/06/22 45.7 <0.158 163 0.335 J <0.0819 0.345 J 21.5 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 91.1 05/09/24 1.29 J <0.158 8.27 <0.940 <0.409 <0.471 <0.960 <4.80 <0.630 <0.685 <1.50 <0.745 <0.950 <1.17 05/10/16 <0.11 <0.20 <0.50 <0.20 <0.12 <0.060 <0.015 <0.080 0.32 J <0.18 0.45 J <0.020 <0.17 0.15 J 04/26/18 <0.11 <0.20 <0.050 <0.20 <0.12 <0.060 <0.15 <0.080 0.47 J <0.18 0.41 J <0.20 <0.17 0.47 J 07/01/20 <0.12 <0.10 <0.097 <0.22 <0.14 <0.079 <0.42 <0.16 0.62 J <0.12 0.22 J <0.17 <0.17 0.96 J 05/04/22 <0.149 <0.158 0.179 J <0.188 <0.0819 <0.0941 <0.192 <0.960 0.538 J <0.137 <0.300 <0.149 <0.190 1.13 05/08/24 <0.149 <0.158 0.179 J <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 <0.234 05/11/16 <0.11 <0.20 <0.50 <0.20 <0.12 <0.060 <0.015 <0.080 0.11 J <0.18 <0.10 <0.020 <0.17 <0.13 04/26/18 <0.11 <0.20 0.44 J <0.20 <0.12 <0.060 <0.15 <0.15 J 1.5 <0.18 <0.10 <0.20 <0.17 0.80 J 07/01/20 <0.12 <0.10 0.38 J <0.22 <0.14 <0.079 <0.42 <0.16 1.6 <0.12 <0.22 <0.17 <0.17 0.71 J 05/05/22 <0.149 <0.158 0.392 J <0.188 <0.0819 <0.0941 <0.192 <0.960 0.938 J <0.137 <0.300 <0.149 <0.190 0.390 J 05/08/24 <0.149 <0.158 <0.100 <0.188 <0.0819 <0.0941 <0.192 <0.960 0.938 J <0.137 <0.300 <0.149 <0.190 <0.234 05/10/16 <0.11 <0.20 0.58 J <0.20 <0.12 <0.060 <0.015 <0.080 0.34 J <0.18 0.42 J <0.020 0.19 J 0.33 J 04/25/18 <0.11 <0.20 0.40 J <0.20 <0.12 <0.060 <0.15 <0.080 1.2 <0.18 0.26 J <0.20 0.32 J 1.9 07/01/20 <0.12 <0.10 0.28 J <0.22 <0.14 <0.079 <0.42 <0.16 1.1 <0.12 0.28 J <0.17 0.31 J 1.9 05/05/22 <0.149 <0.158 0.459 J <0.188 <0.0819 <0.0941 <0.192 <0.960 1.15 <0.137 <0.300 <0.149 0.352 J 3.23 05/06/24 <0.149 <0.158 0.332 J <0.188 <0.0819 <0.0941 <0.192 <0.960 0.328 J <0.137 <0.300 <0.149 <0.190 <0.234 05/13/16 <0.15 <0.22 3.9 <0.20 <0.12 0.18 J 14.7 <0.080 <0.080 <0.18 <0.10 <0.020 <0.17 2.6 04/26/18 <0.11 <0.20 16.9 <0.20 0.13 J 0.59 J 19.7 <0.080 0.31 J <0.18 <0.10 <0.20 <0.17 28.8 07/02/20 <0.12 <0.10 3.1 <0.22 <0.14 <0.079 1.2 <0.16 <0.17 <0.12 <0.22 <0.17 <0.17 0.62 J 7/2/20 DUP <0.12 <0.10 3.0 <0.22 <0.14 <0.079 1.2 <0.16 <0.17 <0.12 <0.22 <0.17 <0.17 0.54 J 05/10/22 05/06/24 Unable to locate monitoring well. Replaced with 22a-MW1 05/12/16 <0.11 <0.20 0.83 J <0.20 <0.12 <0.060 <0.015 <0.080 0.30 J <0.18 <0.10 <0.020 <0.17 2.6 04/26/18 <0.11 <0.20 0.60 J <0.20 <0.12 <0.060 <0.15 <0.080 0.26 J <0.18 <0.10 <0.20 <0.17 0.36 J 07/01/20 <0.12 <0.10 0.61 J <0.22 <0.14 <0.079 <0.42 <0.16 0.28 J <0.12 <0.22 <0.17 <0.17 0.69 J 05/05/22 <0.149 <0.158 0.691 J <0.188 <0.0819 <0.0941 <0.192 <0.960 0.145 J <0.137 <0.300 <0.149 <0.190 0.736 J 05/08/24 <0.149 <0.158 0.527 J <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 <0.234 Unable to locate monitoring well. 22a-MW6 6 - 16 34-MW1 5 - 15 34-MW2 34-MW3 34-MW6 5 - 15 34-MW7D 5 - 15 5 - 15 14 - 19 5 - 1522a-MW1 22a-MW3 3 - 13 240813100401_5815e351 Page 1 of 2 Table 9. Operable Unit 4 North Analytical Results—CVOCs 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date 1, 1 , 1 - T r i c h l o r o e t h a n e 1, 1 , 2 - T r i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e 1, 2 - D i c h l o r o e t h a n e Be n z e n e Ch l o r o e t h a n e ( E t h y l c h l o r i d e ) Ch l o r o m e t h a n e ( M e t h y l ch l o r i d e ) ci s - 1 , 2 - D i c h l o r o e t h e n e Et h y l b e n z e n e Te t r a c h l o r o e t h e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e Tr i c h l o r o e t h e n e Vi n y l c h l o r i d e Units μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L MCL 200 5 NE 7 5 5 NE NE 70 700 5 100 5 2 05/11/16 <0.11 <0.20 97.8 <0.20 <0.12 <0.060 <0.015 0.13 J 0.28 J <0.18 <0.10 <0.020 0.31 J 2.6 09/27/16 <0.11 <0.20 20.2 <0.20 <0.12 <0.060 <0.015 <0.15 0.17 J <0.18 0.38 J <0.020 <0.17 0.30 J 09/19/17 <0.11 <0.20 13.6 <0.20 <0.12 <0.060 <0.15 <0.080 0.33 J <0.18 <0.10 <0.20 <0.17 0.49 J 09/27/18 <0.11 <0.20 1.8 <0.20 <0.20 UJ <0.060 <0.15 <0.080 0.40 J <0.18 <0.10 <0.20 0.19 J 0.56 J 09/30/19 <0.12 <0.10 18 <0.22 <0.14 0.32 J 0.82 J <0.16 0.79 J <0.12 <0.22 <0.17 <0.17 5.2 09/29/20 05/05/22 <0.149 <0.158 0.182 J <0.188 <0.0819 <0.0941 <0.192 <0.960 0.145 J <0.137 <0.300 <0.149 <0.190 <0.234 10/06/23 <0.149 <0.158 4.91 <0.188 <0.0819 <0.0941 <0.192 <0.960 0.145 J <0.137 <0.300 <0.149 <0.190 <0.234 05/09/24 <0.149 <0.158 0.350 J <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 <0.234 05/11/16 <0.11 <0.20 <0.50 <0.20 <0.12 <0.060 <0.015 <0.080 <0.080 <0.18 <0.10 <0.020 <0.17 <0.13 04/26/18 07/01/20 05/05/22 <0.149 <0.158 0.799 J <0.188 <0.0819 <0.0941 <0.192 <0.960 0.358 J <0.137 <0.300 <0.149 <0.190 0.305 J 05/08/24 <0.149 <0.158 <0.100 <0.188 <0.0819 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.300 <0.149 <0.190 <0.234 05/10/16 <0.11 <0.20 5.6 <0.20 <0.12 <0.060 <0.015 <0.080 0.37 J <0.18 <0.10 0.26 J <0.17 0.33 J 09/27/16 <0.11 <0.20 8.8 <0.20 <0.12 <0.060 <0.015 <0.15 0.54 J <0.18 <0.10 0.23 J <0.17 0.38 J 09/19/17 <0.11 <0.20 1.7 <0.20 <0.12 <0.060 <0.15 <0.080 0.43 J <0.18 <0.10 <0.20 <0.17 0.58 J 09/27/18 09/30/19 <0.12 <0.10 8.5 <0.22 <0.14 <0.079 <0.42 <0.16 0.70 J <0.12 <0.22 <0.17 <0.17 4.0 09/29/20 05/05/22 <0.149 <0.158 <0.100 <0.188 <0.0819 <0.0941 <0.192 <0.960 0.276 J <0.137 <0.300 <0.149 <0.190 <0.234 10/06/23 05/08/24 <0.149 <0.158 <0.100 <0.188 <0.0819 <0.0941 <0.192 <0.960 0.276 J <0.137 <0.300 <0.149 <0.190 <0.234 05/10/16 04/23/18 07/01/20 05/10/22 05/06/24 Bold Type = Analyte detected at or above the MCL NA = Not analyzed < = Less than the method detection limit NE = Not established μg/L = microgram(s) per liter UJ = Estimated detection limit. The result is estimated and may be a false negative due to related quality control problems. bgs = below ground surface CVOC = chlorinated volatile organic compound ID = identification J = Estimates value between the reporting limit and the method detection limit. MCL = Maximum Contaminant Level No samples collected due to product. No sample collected. Weber River water level is higher or equal to the 34-MW8 monitoring well water level. Well dry. No sample collected. No sample collected. Weber River water level is higher or equal to the 34-MW10 monitoring well water level. No samples collected due to product. No samples collected due to product in purge water. No samples collected due to product. No samples collected due to product. 34-MW8 4 - 14 Well dry. No sample collected. 34-MW9 2 - 12 5 - 1034-MW10 Well dry. No sample collected. 38-MW12 4 - 14 Well dry. No sample collected. 240813100401_5815e351 Page 2 of 2 Table 10. Operable Unit 4 South Analytical Results—CVOCs 2024 Annual Groundwater Monitoring Report, Operable Units 1 and 4, Union Pacific Railroad, Ogden, Utah Well ID Screen Interval (feet bgs - feet bgs) Date 1, 1 , 1 - T r i c h l o r o e t h a n e 1, 1 , 2 - T r i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Be n z e n e Ch l o r o e t h a n e ( E t h y l ch l o r i d e ) Ch l o r o m e t h a n e (M e t h y l c h l o r i d e ) ci s - 1 , 2 - Di c h l o r o e t h e n e Et h y l b e n z e n e tr a n s - 1 , 2 - Di c h l o r o e t h e n e Tr i c h l o r o e t h e n e Vi n y l c h l o r i d e Units μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L μg/L MCL 200 5 NE 7 5 NE NE 70 700 100 5 2 5/17/16 <0.11 <0.20 <0.50 <0.20 <0.060 <0.15 <0.080 1.4 <0.18 <0.20 <0.17 0.67 J 4/25/18 <0.11 <0.20 <0.050 <0.20 <0.060 <0.15 <0.080 0.96 J <0.18 <0.20 <0.17 0.39 J 7/2/20 <0.12 <0.10 <0.050 <0.22 <0.079 <0.42 <0.16 1.2 <0.12 <0.17 <0.17 0.58 J 5/4/22 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 0.44 J <0.137 <0.149 <0.190 <0.234 5/10/24 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 0.629 J <0.137 <0.149 <0.190 <0.234 5/13/16 <0.15 <0.28 <0.11 <0.19 0.14 J <0.080 <0.18 1.6 <0.11 <0.090 <0.18 4.1 4/25/18 <0.11 <0.20 <0.050 <0.20 0.14 J <0.15 <0.080 1.4 <0.18 <0.20 <0.17 2.8 7/2/20 <0.12 <0.10 <0.097 <0.22 0.11 J <0.42 <0.16 1.7 <0.12 <0.17 <0.17 4.2 5/4/22 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 0.620 J <0.137 <0.149 <0.190 3.09 5/9/24 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 0.741 J <0.137 <0.149 <0.190 3.24 5/16/16 <0.11 <0.20 <0.50 <0.20 <0.060 <0.15 0.37 J 0.38 J <0.18 <0.20 <0.18 0.42 J 4/25/18 <0.11 <0.20 <0.050 <0.20 <0.060 <0.15 <0.080 0.40 J <0.18 <0.20 <0.17 0.45 J 7/2/20 <0.12 <0.10 <0.097 <0.22 <0.079 <0.42 <0.16 <0.17 <0.12 <0.17 <0.17 0.13 J 5/10/22 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.149 <0.190 <0.234 5/10/24 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 0.880 J <0.137 <0.149 <0.190 <0.234 5/16/16 <0.11 <0.20 <0.50 <0.20 <0.060 <0.15 0.11 J 0.27 J <0.18 <0.20 <0.17 0.34 J 4/25/18 <0.11 <0.20 <0.050 <0.20 <0.060 <0.15 <0.080 0.22 J <0.18 <0.20 <0.17 0.34 J 7/2/20 <0.12 <0.10 <0.097 <0.22 <0.079 <0.42 <0.16 0.30 J <0.12 <0.17 <0.17 0.71 J 5/10/22 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 0.262 J <0.137 <0.149 <0.190 0.301 J 5/9/24 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.149 <0.190 <0.234 5/13/16 <0.11 <0.20 <0.50 <0.20 0.37 J <0.15 <0.080 0.19 J <0.18 <0.20 <0.17 4.3 4/25/18 <0.11 <0.20 <0.050 <0.20 <0.060 <0.15 <0.080 1.2 <0.18 <0.20 <0.17 5.6 7/2/20 <0.12 <0.10 <0.097 <0.22 <0.079 <0.42 <0.16 0.24 J <0.12 <0.17 <0.17 1.1 5/4/22 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.149 <0.190 0.365 J 5/9/24 <0.149 <0.158 <0.100 <0.188 <0.0941 <0.192 <0.960 <0.126 <0.137 <0.149 <0.190 0.251 J 5/13/16 <0.15 <0.28 <0.11 <0.19 0.36 J <0.080 0.16 J 1.6 <0.11 <0.090 <0.18 35.8 4/25/18 <0.11 <0.20 <0.050 <0.20 0.26 J <0.15 <0.080 1.7 <0.18 <0.20 <0.17 40.6 7/2/20 <0.12 <0.10 <0.097 <0.22 0.21 J <0.42 <0.16 0.94 J <0.12 <0.17 <0.17 13.3 5/4/22 <0.149 <0.158 <0.100 <0.188 0.154 J <0.192 <0.960 0.800 J <0.137 <0.149 <0.190 11.0 5/9/24 <0.149 <0.158 <0.100 <0.188 0.219 J <0.192 <0.960 0.791 J <0.137 <0.149 <0.190 9.88 Bold Type = Analyte detected at or greater than the MCL < = Less than the method detection limit μg/L = microgram(s) per liter bgs = below ground surface CVOC = chlorinated volatile organic compound ID = identification J = Estimated value between the reporting limit and the method detection limit. MCL = Maximum Contaminant Level NE = not established 3.5 - 13.5 30-MW6D 14 - 19 21-MW2 3.5 - 13.526-STMW1 30-MW1 4 -14 10 - 15 22b-MW2D 1.5 - 11.5 26-MW1 240813100401_5815e351 Page 1 of 1 Figures ST204 ST104 ST53 ST104 ST104 9 Coffer Dam G o o d e L a k e Ogden R i v e r 20th St 21st St 24th St Wa l l A v e W e b e r Ri ver 31st St §¨¦I-15 DOWNTOWN OGDEN 44 MILES TO SALT LAKE CITY 9 Buena Ventura Pond and Park FORMER PINTSCHGAS FACILITY \\Dc1vs01\gisproj\U\UPRR\UPRR_Ogden\UPRR_Ogden\MapFiles\2024\GMR\Figure1_SiteLocationMap.mxd AESPEJO 7/3/2024 17:54:40 0 1,000 2,000 Feet LEGEND COMMUTER LINE TRACK APPROXIMATE OGDEN RAILYARDBOUNDARY APPROXIMATE AREA OF INDUSTRIALSEWER LINE REMEDIATION ANDSOURCE AREA SOIL REMOVAL APPROXIMATE OU 1 SITE BOUNDARY APPROXIMATE OU 4 NORTH PLUMEBOUNDARY (SPRING 2024) APPROXIMATE OU 4 SOUTH PLUMEBOUNDARY (SPRING 2024) STATE ROUTE 1 inch = 1,000 feet TCE = TRICHLOROETHENE CIS-1, 2-DCE = CIS-1, 2-DICHLOROETHENEMAP EXTENT§¨¦15 §¨¦84 §¨¦15 SouthWeber Uintah WashingtonTerrace Riverdale SouthOgden Roy City WestHaven OgdenCity Marriott-SlatervilleCity FarrWestCity £¤89 MAP INDEX FIGURE 1SITE LOCATION MAP2024 ANNUAL GROUNDWATER MONITORING REPORT, OPERABLE UNITS 1 AND 4UNION PACIFIC OGDEN RAILROAD FACILITY, OGDEN, UTAH ST204 Notes:Aerial Imagery is 2016 NAIP imagery AA A A A A A A AA A A A A A A A A A A A A A AA AA A 33-MW10FP(4277.06) 33-MW2FP(4275.54) 33-MW4AA(4275.55) 33-MW4FP(4275.71)33-MW5FP*(4273.54) 33-MW6(4272.78) 33-MW6FP(4272.75) 33-MW9(4272.04) 33-MP4 33-MW11FP33-MW3 33-MW2 33-MW5 33-MW5A 33-MW12FP*(4276.04) 33-MP24275.64 33-MP1 33-MW8a 33-IW1 33-MP3 33-MP5 33-MP6 33-RW1 33-RW2 33-MW1FP 33-MW1 33-MW4 GOODE LAKE OGDEN R I V E R (4276.04) 21ST STREET OVERPASS 427 7 42 7 6 4 2 7 5 4 2 7 4 4273 SOURCES:* MONITORING WELL NOT USED FOR GROUNDWATER CONTOURING.A MONITORING WELL COULD NOT BE LOCATED.1. THE FORRESTER GROUP, PILOT DNAPL RECOVERY SYSTEM OPERATIONAL REPORT, FEBUARY 2003 (FIGURE 2).2. THE FORRESTER GROUP, OGDEN FEASIBILITY STUDY, SEPTEMBER 2004 (FIGURE 3-4).3. AERIAL IMAGERY IS MICROSOFT BING IMAGERY. \\dc1vs01\GISProj\U\UPRR\UPRR_Ogden\UPRR_Ogden\MapFiles\2024\GMR\Figure2_OU1_GW_Locs_and_MW_Pot_Map.mxd AESPEJO 2/20/2025 07:56:53 FIGURE 2OPERABLE UNIT 1 MONITORING WELL LOCATION AND GROUNDWATER POTENTIOMETRIC SURFACE MAP2024 ANNUAL GROUNDWATER MONITORING REPORT, OPERABLE UNITS 1 AND 4UNION PACIFIC OGDEN RAILROAD FACILITY, OGDEN, UTAH WELL SAMPLING AND GAUGING FREQUENCY A BIENNIAL A FIVE YEAR A FIVE YEAR AND BIENNIAL A WELL GAUGING ONLY FIVE YEAR FREQUENCY A NOT GAUGED OR SAMPLED A GOODE LAKE SURFACE SAMPLE A ABANDONED GROUNDWATER ELEVATION (FEET ABOVE MSL, SPRING 2024) GROUNDWATER FLOW DIRECTION GROUNDWATER ELEVATION CONTOUR(FEET ABOVE MSL) (DASHED WHERE INFERRED) APPROXIMATE OGDEN RAILYARD BOUNDARY (4276.04) 4273 LEGEND 0 200 400 Feet1 inch = 200 feet FIGURE 3OU4 NORTH CVOC 2024 PLUME AREA2024 ANNUAL G ROUND WATER MO NITORING REPORT, OPERABLE UNITS 1 AND 4UNION PACIFIC RAIL ROAD COMPANY, OG DEN, UT \\Dc1vs01\gisproj\U\UPRR\UPRR_Ogden\UPRR_Ogden\MapFiles\2024\GMR\Figure3_OU4N_PS_VC.mxd AESPEJO 7/3/2024 18:12:55 !P A A A WEBER RIVER 21st St 24th St (4284.04)(6.31)WEBER RIVER GAUGE(4280.78)* 34-MW10(4281.13)(ND) 34-MW8(4281.10)(ND) 18-MW1 SPRR3-MW3 34-MW9(4278.16)(ND) 34-MW3(4278.61)(ND) 38-MW12(NM)c (PRODUCT) 34-MW6a 22a-MW6(4285.07)(ND) 34-MW2(4279.19)(ND) 34-MW1(NM)b (ND) 22a-MW3(4285.18)(ND) 34-MW7D(4276.69)(ND) 38-MW9 38-MW5 38-MW3 35-MW2 35-MW1 34-OB -12 34-OB -17 SPRR3-MW2 34-B1W1 34-B2W2 34-SPMW-02 38-MW8 38-MW6 34-MW4 22a-MW1 34-OB -16 34-SPMW-03 4282 4 2 8 1 4280 4283 4284 4 2 7 9 4 2 7 8 42824281 4283 4 2 8 4 4278 4277 4280 4279 4 2 8 5 (6.31) NotesaWell could not be located. Well replaced with 22a-MW1.bWell damaged. Water Level could not be collected.cProduct too viscous to collect water level. *Water level elevation not used for groundwater contours.Plume contours based on Spring 2024 results.J = Analyte is an estimated value between the reporting limit and the method detection limit.MNA = Monitored natural attenuationMSL = Mean Sea LevelND = Non-detectAerial Imagery is Microsoft Bing Imagery 1 inch = 500 feet 0 500250 Feet LEGEND WELL SAMPLING AND GAUGING FREQUENCY A ANNUAL A BIENN IAL A FIVE YEAR A FIVE YEAR AND BIEN NIAL A WELL GAUGING ON LYFIVE YEAR FREQU ENCY A FIVE YEAR MN A A NOT GAUGED OR SAMPLED A ABAND ONED !P RIVER GAUGE (NOT USED FOR POTEN TIOMETRIC C ONTOU R) GR OUNDWATER ELEVATIONCONTOUR (FEET ABOVE MSL) GR OUNDWATER FLOW DIRECTION VINYL CHLORIDE CONCENTRATION (μg/L) GR OUNDWATER ELEVATION (FEET ABOVE MSL, SPRING 2024) VINYL CHLORIDE CONCENTRATION (µg/L) 4277 2 10 100 (4279.19) A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A 22b-MW1A 30-MW1(4300.74)(0.251 J) 22b-MW2D(4297.85)(3.24) 30-MW6D(4301.53)(9.88) 26-MW1(4298.85)(ND) 21-MW2(4303.25)(ND) 26-STMW1(4297.33)(ND) 21-MW1A 30-B7(P) 30-B16(P) 20-MW4 30-MW7 26-MW2 20-MW2 30-MW4A 30-MW3 4298 4 3 0 1 4 3 0 0 4 2 9 9 4 3 0 2 4303 4301 4300 4299 4 3 0 2 4 3 0 3 4 2 9 8 LEGEND WELL SAMPLING AND GAUGING FREQUENCY A BIENNIAL A FIVE YEAR A FIVE YEAR GAUGE A FIVE YEAR MNA A BIENN IAL AND FIVE YEAR MNA A ABAND ONEDGROUNDWATER ELEVATIONCONTOUR (FEET ABOVE MSL)GR OUNDWATER FLOW DIRECTIONVINYL CHLORIDE CONCENTRATION (μg/L)GR OUNDWATER ELEVATION (FEET ABOVE MSL, SPRING 2024)VINYL CHLORIDE CONCENTRATION2 µg/L NotesGroundwater samples collected in Spring 2024.Plume contrours based on Spring 2024 results.J = Analyte is an estimated value betweenthe reporting limit and the method detection limit.ND = Non-DetectAerial Imagery is Microsoft Bing Imagery (3.24) 4301 (4301.53) 1 inch = 500 feet 0 500250 Feet \\Dc1vs01\gisproj\U\UPRR\UPRR_Ogden\UPRR_Ogden\MapFiles\2024\GMR\Figure4_OU4S_PS_VC.mxd AESPEJO 7/3/2024 18:20:58 FIGURE 4OU4 SOUTH CVOC 2024 PLUME AREA2024 GR OUNDWATER MON ITOR ING R EPO RT, OPERABLE UNITS 1 AND 4UNION PACIFIC RAIL ROAD COMPANY, OG DEN, UT FIGURE 5OU4 NORTH SPRING 2022 AND 2024 CVOC PLUME AREAS2024 GR OUNDWATER MONITORING REPORT, OPERABLE UNITS 1 AND 4UNION PACIFIC RAILROAD COMPANY, OGDEN, UT \\Dc1vs01\gisproj\U\UPRR\UPRR_Ogden\UPRR_Ogden\MapFiles\2024\GMR\Figure5_OU4N_2022v2024.mxd AESPEJO 7/8/2024 11:09:23 Notes:Ft2 = Square Feetµg/L = Micrograms per literJ = Analyte is an estimated value betweenthe reporting limit and the method detection limit.MNA = Monitored natural attenuationND = Non-detectNS = N ot sampledNSP = Not sampled due to productAerial Imagery is Microsoft Bing imagery !P GOODE LAKE 20th St W E B E R R I V E R 21st StOGDENRIVER 24th StWEBER RIVER GAUGE 34-MW10 34-MW8 18-MW1 SPRR3-MW3 34-MW9(0.305 J) 34-MW3(3.23) 38-MW12(NSP) 34-MW6(Could NotLocate)22a-MW6(91.1) 34-MW2(0.390 J) 34-MW1(1.13) 22a-MW3(4281.55)(ND) 34-MW7D(0.69 J) 38-MW9 38-MW5 38-MW3 35-MW2 35-MW1 34-OB-12 34-OB-17 SPRR3-MW2 34-B1W1 34-B2W2 34-SPMW-02 38-MW8 38-MW6 34-MW4 22a-MW1 34-OB-16 34-SPMW-03 !P A A A GOODE LAKE 20th St W E B E R R I V E R 21st St OGDENRIVER 24th St (6.31) WEBER RIVER GAUGE 34-MW10(ND) 34-MW8(ND) 18-MW1 SPRR3-MW3 34-MW9(ND) 34-MW3(ND) 38-MW12(NSP) 34-MW6 22a-MW6(ND) 34-MW2(ND) 34-MW1(ND) 22a-MW3(ND) 34-MW7D(ND) 38-MW9 38-MW5 38-MW3 35-MW2 35-MW1 34-OB-12 34-OB-17 SPRR3-MW2 34-B1W1 34-B2W2 34-SPMW-02 38-MW8 38-MW6 34-MW4 22a-MW1 34-OB-16 34-SPMW-03 2024 2022 0 500 1 inch equals 500 feet ³ VINYL CHOLORIDE CONCENTRATION LEGEN DWELL SAMPLING AND GAUGINGFREQUENCY A ANNU AL A BIENNIAL A FIVE YEAR A WELL GAUGING O NLYFIVE YEAR FREQ UENCY A FIVE YEAR MNA !P RIVER GAU GE GROUN DWATER FLOWDIRECTION 2 µg/L 10 µg/L 100 µg/L FIVE YEAR AND BIENNIALA NOT GAUGED OR SAMPLEDA ABANDON EDA VIN YL CHLOR IDECONCENTRATION (μg/L)(6.31) Spring 2022 Spring 2024 Change from 2022 Plume Area 2 µg/L 455,138 ft²433,460 ft²-21,678 ft² Plume Area 10 µg/L 244,022 ft²168,301 ft²-75,721 ft² Plume Area 100 µg/L 99,793 ft²53,103 ft²-46,690 ft² FIGURE 6OU4 SOUTH SPRING 2022 AND 2024 CVOC PLUME AREAS2024 GR OUNDWATER MONITORING REPORT, OPERABLE UNITS 1 AND 4UNION PACIFIC RAILROAD COMPANY, OGDEN, UT \\Dc1vs01\gisproj\U\UPRR\UPRR_Ogden\UPRR_Ogden\MapFiles\2024\GMR\Figure6_OU4S_2022v2024.mxd AESPEJO 7/8/2024 10:49:29 (9.88) Notes:Ft2 = Square Feetug/L = Micrograms per literJ = Analyte is an estimated value betweenthe reporting limit and the method detection limit.MNA = Monitored natural attenuationND = Non-detectAerial Imagery is Microsoft Bing imagery A A A A A A A A A A A A AAAAAAAAAAAAA A AAA AAAAAA A A A A A AAA A AA 22b-MW1A 30-M W1(0.365 J) 22b-MW2D(3.09) 30-MW6D(11.0) 26-MW1(ND) 21-MW2(ND) 26-STMW1(0.301 J) 21-M W1A 30-B 7(P) 30-B16(P) 20-MW4 30-MW7 26-MW2 20-MW2 30-M W4A 30-MW3 Spring 2022 Change from 2020Plume Area 2 μg/L 301,383 ft²-47,194 ft²Plume Area 10 μg/L 103,832 ft²-8,961 ft² LEGEND WELL SAMPLING AND GAUGINGFREQUENCY A BIENNIAL A FIVE YEAR A WELL GAUGING ONLYFIVE YEAR FREQUENCY A FIVE YEAR MNA VINYL CHLORIDECONCENTRATION (μ g/L) GROUNDWATER FLOWDIRECTION 0 200 400 1 inch equals 400 feet A A A A A A A A A A A A AAAAAAAAAAAAA A AAA AAAAAA A A A A A AAA A AA A A 22b-MW1A 30-MW1(0.251 J) 22b-MW2D(3.24) 30-M W6D(9.88) 26-M W1(ND) 21-M W2(ND) 26-STMW 1(ND) 21-MW1A 30-B7(P) 30-B16(P) 20-MW4 30-MW7 26-MW2 20-MW2 30-MW4A 30-MW3 2022 2024 VINYL CHLORIDE CONCENTRATION 2 µg/L 10 µg/L BIENNIAL AND FIVE YEAR MNA ABANDONEDA A Spring 2022 Plume Area 2 µg/L 301,383 ft² Plume Area 10 µg/L 103,832 ft² Spring 2024 Change from 2022 Plume Area 2 µg/L 301,383 ft²No Change Plume Area 10 µg/L 0 ft²-103,832 ft² Attachment 1 Field Logs Operable Unit 1 Ca m S c a n n e r Operable Unit 4 North Ca m S c a n n e r Operable Unit 4 South Ca m S c a n n e r Attachment 2 Laboratory Reports ANALYTICAL REPORT May 21, 2024 UPRR - Jacobs Sample Delivery Group:L1734148 Samples Received:05/08/2024 Project Number:1990 Description:Ogden UT-SP Yard Site:2024 BIENNIAL SAMPLING EVENT Report To:Terence Mares 6440 S. Milrock Dr. Suite 300 Holladay, UT 84121 Entire Report Reviewed By: May 21, 2024 [Preliminary Report] Brittnie L Boyd Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 1 of 28 May 21, 2024 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 1 of 28 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 GOODE-LAKE L1734148-01 6 33-MP2 L1734148-02 7 33-MW6 L1734148-03 8 33-MW6FP L1734148-04 9 33-MW5FP L1734148-05 10 33-MW9 L1734148-06 11 33-MW12FP L1734148-07 12 33-MW4AA L1734148-08 13 TB01-05072024 L1734148-09 15 Qc: Quality Control Summary 16 Volatile Organic Compounds (GC/MS) by Method 8260B 16 Semi-Volatile Organic Compounds (GC) by Method 8015 20 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM 24 Gl: Glossary of Terms 26 Al: Accreditations & Locations 27 Sc: Sample Chain of Custody 28 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 2 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 2 of 28 SAMPLE SUMMARY Collected by Collected date/time Received date/time GOODE-LAKE L1734148-01 GW AL 05/07/24 09:30 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 1 05/12/24 05:44 05/12/24 05:44 JBE Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MP2 L1734148-02 GW AL 05/07/24 08:55 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 1 05/12/24 06:03 05/12/24 06:03 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2285749 1 05/15/24 16:47 05/17/24 07:14 MAA Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 12:34 MBE Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MW6 L1734148-03 GW AL 05/07/24 09:35 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 5 05/12/24 08:35 05/12/24 08:35 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2288850 1 05/18/24 07:29 05/20/24 14:41 AUU Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 12:52 MBE Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 10 05/10/24 03:23 05/11/24 05:51 JCH Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MW6FP L1734148-04 GW AL 05/07/24 10:15 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 1 05/12/24 06:22 05/12/24 06:22 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2285749 1 05/15/24 16:47 05/17/24 08:35 MAA Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2285749 1 05/15/24 16:47 05/17/24 20:08 TJD Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 13:10 MBE Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 10 05/10/24 03:23 05/11/24 06:08 JCH Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MW5FP L1734148-05 GW AL 05/07/24 11:02 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 1 05/12/24 06:41 05/12/24 06:41 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2285749 1 05/15/24 16:47 05/17/24 08:55 MAA Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 13:27 MBE Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MW9 L1734148-06 GW AL 05/07/24 11:55 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 1 05/12/24 07:00 05/12/24 07:00 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2289893 1 05/20/24 16:56 05/21/24 01:38 DMG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 13:45 MBE Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 3 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 3 of 28 SAMPLE SUMMARY Collected by Collected date/time Received date/time 33-MW12FP L1734148-07 GW AL 05/07/24 12:50 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 1 05/12/24 07:19 05/12/24 07:19 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2285750 1 05/15/24 13:57 05/16/24 10:31 MAA Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 14:03 MBE Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MW4AA L1734148-08 GW AL 05/07/24 14:05 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284762 10 05/12/24 08:54 05/12/24 08:54 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2285750 1 05/15/24 13:57 05/16/24 10:52 MAA Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2283754 1 05/10/24 03:23 05/10/24 14:21 MBE Mt. Juliet, TN Collected by Collected date/time Received date/time TB01-05072024 L1734148-09 GW AL 05/07/24 00:00 05/08/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2284825 1 05/12/24 03:21 05/12/24 03:21 TJJ Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 4 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 4 of 28 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Brittnie L Boyd Project Manager Sample Delivery Group (SDG) Narrative pH outside of method requirement. Lab Sample ID Project Sample ID Method L1734148-06 33-MW9 8015 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 5 of 28 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 5 of 28 SAMPLE RESULTS - 01 L1734148 GOODE-LAKE Collected date/time: 05/07/24 09:30 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 0.137 J 0.0941 1.00 1 05/12/2024 05:44 WG2284762 Chloroethane U 0.192 5.00 1 05/12/2024 05:44 WG2284762 Chloromethane U J3 0.960 2.50 1 05/12/2024 05:44 WG2284762 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 05:44 WG2284762 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 05:44 WG2284762 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 05:44 WG2284762 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 05:44 WG2284762 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 05:44 WG2284762 Ethylbenzene U 0.137 1.00 1 05/12/2024 05:44 WG2284762 Tetrachloroethene U 0.300 1.00 1 05/12/2024 05:44 WG2284762 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 05:44 WG2284762 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 05:44 WG2284762 Trichloroethene U J4 0.190 1.00 1 05/12/2024 05:44 WG2284762 Vinyl chloride U 0.234 1.00 1 05/12/2024 05:44 WG2284762 (S) Toluene-d8 97.0 80.0-120 05/12/2024 05:44 WG2284762 (S) 4-Bromofluorobenzene 112 77.0-126 05/12/2024 05:44 WG2284762 (S) 1,2-Dichloroethane-d4 89.3 70.0-130 05/12/2024 05:44 WG2284762 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 6 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 6 of 28 SAMPLE RESULTS - 02 L1734148 33-MP2 Collected date/time: 05/07/24 08:55 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 3.37 0.0941 1.00 1 05/12/2024 06:03 WG2284762 Chloroethane U 0.192 5.00 1 05/12/2024 06:03 WG2284762 Chloromethane U J3 0.960 2.50 1 05/12/2024 06:03 WG2284762 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 06:03 WG2284762 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 06:03 WG2284762 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 06:03 WG2284762 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 06:03 WG2284762 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 06:03 WG2284762 Ethylbenzene 25.3 0.137 1.00 1 05/12/2024 06:03 WG2284762 Tetrachloroethene U 0.300 1.00 1 05/12/2024 06:03 WG2284762 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 06:03 WG2284762 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 06:03 WG2284762 Trichloroethene U J4 0.190 1.00 1 05/12/2024 06:03 WG2284762 Vinyl chloride U 0.234 1.00 1 05/12/2024 06:03 WG2284762 (S) Toluene-d8 97.2 80.0-120 05/12/2024 06:03 WG2284762 (S) 4-Bromofluorobenzene 113 77.0-126 05/12/2024 06:03 WG2284762 (S) 1,2-Dichloroethane-d4 89.1 70.0-130 05/12/2024 06:03 WG2284762 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 936 J3 22.2 100 1 05/17/2024 07:14 WG2285749 C28-C40 Oil Range 480 11.8 100 1 05/17/2024 07:14 WG2285749 (S) o-Terphenyl 133 52.0-156 05/17/2024 07:14 WG2285749 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene 11.3 0.0190 0.0500 1 05/10/2024 12:34 WG2283754 Acenaphthene 69.1 0.0190 0.0500 1 05/10/2024 12:34 WG2283754 Acenaphthylene 2.69 0.0171 0.0500 1 05/10/2024 12:34 WG2283754 Benzo(a)anthracene 0.390 0.0203 0.0500 1 05/10/2024 12:34 WG2283754 Benzo(a)pyrene 0.0559 0.0184 0.0500 1 05/10/2024 12:34 WG2283754 Benzo(b)fluoranthene 0.0535 0.0168 0.0500 1 05/10/2024 12:34 WG2283754 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/10/2024 12:34 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 12:34 WG2283754 Chrysene 0.322 0.0179 0.0500 1 05/10/2024 12:34 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 12:34 WG2283754 Fluoranthene 5.82 0.0270 0.100 1 05/10/2024 12:34 WG2283754 Fluorene 24.5 0.0169 0.0500 1 05/10/2024 12:34 WG2283754 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/10/2024 12:34 WG2283754 Naphthalene 42.9 0.0917 0.250 1 05/10/2024 12:34 WG2283754 Phenanthrene 13.1 0.0180 0.0500 1 05/10/2024 12:34 WG2283754 Pyrene 9.28 0.0169 0.0500 1 05/10/2024 12:34 WG2283754 1-Methylnaphthalene 90.7 0.0687 0.250 1 05/10/2024 12:34 WG2283754 2-Methylnaphthalene 0.762 0.0674 0.250 1 05/10/2024 12:34 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 12:34 WG2283754 (S) Nitrobenzene-d5 121 31.0-160 05/10/2024 12:34 WG2283754 (S) 2-Fluorobiphenyl 107 48.0-148 05/10/2024 12:34 WG2283754 (S) p-Terphenyl-d14 103 37.0-146 05/10/2024 12:34 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 7 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 7 of 28 SAMPLE RESULTS - 03 L1734148 33-MW6 Collected date/time: 05/07/24 09:35 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 58.7 0.471 5.00 5 05/12/2024 08:35 WG2284762 Chloroethane U 0.960 25.0 5 05/12/2024 08:35 WG2284762 Chloromethane U J3 4.80 12.5 5 05/12/2024 08:35 WG2284762 1,1-Dichloroethane U 0.500 5.00 5 05/12/2024 08:35 WG2284762 1,2-Dichloroethane U 0.409 5.00 5 05/12/2024 08:35 WG2284762 1,1-Dichloroethene U 0.940 5.00 5 05/12/2024 08:35 WG2284762 cis-1,2-Dichloroethene U 0.630 5.00 5 05/12/2024 08:35 WG2284762 trans-1,2-Dichloroethene U 0.745 5.00 5 05/12/2024 08:35 WG2284762 Ethylbenzene 194 0.685 5.00 5 05/12/2024 08:35 WG2284762 Tetrachloroethene U 1.50 5.00 5 05/12/2024 08:35 WG2284762 1,1,1-Trichloroethane U 0.745 5.00 5 05/12/2024 08:35 WG2284762 1,1,2-Trichloroethane U 0.790 5.00 5 05/12/2024 08:35 WG2284762 Trichloroethene U J4 0.950 5.00 5 05/12/2024 08:35 WG2284762 Vinyl chloride U 1.17 5.00 5 05/12/2024 08:35 WG2284762 (S) Toluene-d8 96.1 80.0-120 05/12/2024 08:35 WG2284762 (S) 4-Bromofluorobenzene 112 77.0-126 05/12/2024 08:35 WG2284762 (S) 1,2-Dichloroethane-d4 89.9 70.0-130 05/12/2024 08:35 WG2284762 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 3340 22.2 100 1 05/20/2024 14:41 WG2288850 C28-C40 Oil Range U 11.8 100 1 05/20/2024 14:41 WG2288850 (S) o-Terphenyl 135 52.0-156 05/20/2024 14:41 WG2288850 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene 15.5 0.0190 0.0500 1 05/10/2024 12:52 WG2283754 Acenaphthene 177 0.190 0.500 10 05/11/2024 05:51 WG2283754 Acenaphthylene 5.48 0.0171 0.0500 1 05/10/2024 12:52 WG2283754 Benzo(a)anthracene 0.240 0.0203 0.0500 1 05/10/2024 12:52 WG2283754 Benzo(a)pyrene U 0.0184 0.0500 1 05/10/2024 12:52 WG2283754 Benzo(b)fluoranthene U 0.0168 0.0500 1 05/10/2024 12:52 WG2283754 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/10/2024 12:52 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 12:52 WG2283754 Chrysene 0.203 0.0179 0.0500 1 05/10/2024 12:52 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 12:52 WG2283754 Fluoranthene 5.35 0.0270 0.100 1 05/10/2024 12:52 WG2283754 Fluorene 48.1 0.0169 0.0500 1 05/10/2024 12:52 WG2283754 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/10/2024 12:52 WG2283754 Naphthalene 407 0.917 2.50 10 05/11/2024 05:51 WG2283754 Phenanthrene 83.1 0.0180 0.0500 1 05/10/2024 12:52 WG2283754 Pyrene 8.45 0.0169 0.0500 1 05/10/2024 12:52 WG2283754 1-Methylnaphthalene 314 0.687 2.50 10 05/11/2024 05:51 WG2283754 2-Methylnaphthalene 60.7 0.0674 0.250 1 05/10/2024 12:52 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 12:52 WG2283754 (S) Nitrobenzene-d5 114 31.0-160 05/11/2024 05:51 WG2283754 (S) Nitrobenzene-d5 119 31.0-160 05/10/2024 12:52 WG2283754 (S) 2-Fluorobiphenyl 95.8 48.0-148 05/10/2024 12:52 WG2283754 (S) 2-Fluorobiphenyl 108 48.0-148 05/11/2024 05:51 WG2283754 (S) p-Terphenyl-d14 101 37.0-146 05/11/2024 05:51 WG2283754 (S) p-Terphenyl-d14 104 37.0-146 05/10/2024 12:52 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 8 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 8 of 28 SAMPLE RESULTS - 04 L1734148 33-MW6FP Collected date/time: 05/07/24 10:15 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 20.6 0.0941 1.00 1 05/12/2024 06:22 WG2284762 Chloroethane U 0.192 5.00 1 05/12/2024 06:22 WG2284762 Chloromethane U J3 0.960 2.50 1 05/12/2024 06:22 WG2284762 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 06:22 WG2284762 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 06:22 WG2284762 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 06:22 WG2284762 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 06:22 WG2284762 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 06:22 WG2284762 Ethylbenzene 27.9 0.137 1.00 1 05/12/2024 06:22 WG2284762 Tetrachloroethene U 0.300 1.00 1 05/12/2024 06:22 WG2284762 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 06:22 WG2284762 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 06:22 WG2284762 Trichloroethene U J4 0.190 1.00 1 05/12/2024 06:22 WG2284762 Vinyl chloride U 0.234 1.00 1 05/12/2024 06:22 WG2284762 (S) Toluene-d8 96.3 80.0-120 05/12/2024 06:22 WG2284762 (S) 4-Bromofluorobenzene 110 77.0-126 05/12/2024 06:22 WG2284762 (S) 1,2-Dichloroethane-d4 89.0 70.0-130 05/12/2024 06:22 WG2284762 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 1130 J3 22.2 100 1 05/17/2024 08:35 WG2285749 C28-C40 Oil Range 85.2 J 11.8 100 1 05/17/2024 20:08 WG2285749 (S) o-Terphenyl 155 52.0-156 05/17/2024 20:08 WG2285749 (S) o-Terphenyl 134 52.0-156 05/17/2024 08:35 WG2285749 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene 12.8 0.0190 0.0500 1 05/10/2024 13:10 WG2283754 Acenaphthene 106 0.190 0.500 10 05/11/2024 06:08 WG2283754 Acenaphthylene 3.03 0.0171 0.0500 1 05/10/2024 13:10 WG2283754 Benzo(a)anthracene 0.407 0.0203 0.0500 1 05/10/2024 13:10 WG2283754 Benzo(a)pyrene 0.105 0.0184 0.0500 1 05/10/2024 13:10 WG2283754 Benzo(b)fluoranthene 0.0879 0.0168 0.0500 1 05/10/2024 13:10 WG2283754 Benzo(g,h,i)perylene 0.0389 J 0.0184 0.0500 1 05/10/2024 13:10 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 13:10 WG2283754 Chrysene 0.364 0.0179 0.0500 1 05/10/2024 13:10 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 13:10 WG2283754 Fluoranthene 5.23 0.0270 0.100 1 05/10/2024 13:10 WG2283754 Fluorene 35.3 0.0169 0.0500 1 05/10/2024 13:10 WG2283754 Indeno(1,2,3-cd)pyrene 0.0279 J 0.0158 0.0500 1 05/10/2024 13:10 WG2283754 Naphthalene 10.0 0.0917 0.250 1 05/10/2024 13:10 WG2283754 Phenanthrene 32.4 0.0180 0.0500 1 05/10/2024 13:10 WG2283754 Pyrene 8.87 0.0169 0.0500 1 05/10/2024 13:10 WG2283754 1-Methylnaphthalene 133 0.687 2.50 10 05/11/2024 06:08 WG2283754 2-Methylnaphthalene 0.759 0.0674 0.250 1 05/10/2024 13:10 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 13:10 WG2283754 (S) Nitrobenzene-d5 118 31.0-160 05/11/2024 06:08 WG2283754 (S) Nitrobenzene-d5 118 31.0-160 05/10/2024 13:10 WG2283754 (S) 2-Fluorobiphenyl 102 48.0-148 05/10/2024 13:10 WG2283754 (S) 2-Fluorobiphenyl 106 48.0-148 05/11/2024 06:08 WG2283754 (S) p-Terphenyl-d14 98.9 37.0-146 05/11/2024 06:08 WG2283754 (S) p-Terphenyl-d14 103 37.0-146 05/10/2024 13:10 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 9 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 9 of 28 SAMPLE RESULTS - 05 L1734148 33-MW5FP Collected date/time: 05/07/24 11:02 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/12/2024 06:41 WG2284762 Chloroethane U 0.192 5.00 1 05/12/2024 06:41 WG2284762 Chloromethane U J3 0.960 2.50 1 05/12/2024 06:41 WG2284762 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 06:41 WG2284762 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 06:41 WG2284762 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 06:41 WG2284762 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 06:41 WG2284762 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 06:41 WG2284762 Ethylbenzene U 0.137 1.00 1 05/12/2024 06:41 WG2284762 Tetrachloroethene U 0.300 1.00 1 05/12/2024 06:41 WG2284762 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 06:41 WG2284762 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 06:41 WG2284762 Trichloroethene U J4 0.190 1.00 1 05/12/2024 06:41 WG2284762 Vinyl chloride U 0.234 1.00 1 05/12/2024 06:41 WG2284762 (S) Toluene-d8 96.3 80.0-120 05/12/2024 06:41 WG2284762 (S) 4-Bromofluorobenzene 112 77.0-126 05/12/2024 06:41 WG2284762 (S) 1,2-Dichloroethane-d4 89.2 70.0-130 05/12/2024 06:41 WG2284762 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 65.2 J J3 22.2 100 1 05/17/2024 08:55 WG2285749 C28-C40 Oil Range 645 11.8 100 1 05/17/2024 08:55 WG2285749 (S) o-Terphenyl 129 52.0-156 05/17/2024 08:55 WG2285749 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene U 0.0190 0.0500 1 05/10/2024 13:27 WG2283754 Acenaphthene 0.784 0.0190 0.0500 1 05/10/2024 13:27 WG2283754 Acenaphthylene 0.0631 0.0171 0.0500 1 05/10/2024 13:27 WG2283754 Benzo(a)anthracene U 0.0203 0.0500 1 05/10/2024 13:27 WG2283754 Benzo(a)pyrene U 0.0184 0.0500 1 05/10/2024 13:27 WG2283754 Benzo(b)fluoranthene U 0.0168 0.0500 1 05/10/2024 13:27 WG2283754 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/10/2024 13:27 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 13:27 WG2283754 Chrysene U 0.0179 0.0500 1 05/10/2024 13:27 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 13:27 WG2283754 Fluoranthene 0.0865 J 0.0270 0.100 1 05/10/2024 13:27 WG2283754 Fluorene 0.200 0.0169 0.0500 1 05/10/2024 13:27 WG2283754 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/10/2024 13:27 WG2283754 Naphthalene U 0.0917 0.250 1 05/10/2024 13:27 WG2283754 Phenanthrene U 0.0180 0.0500 1 05/10/2024 13:27 WG2283754 Pyrene 0.145 0.0169 0.0500 1 05/10/2024 13:27 WG2283754 1-Methylnaphthalene U 0.0687 0.250 1 05/10/2024 13:27 WG2283754 2-Methylnaphthalene U 0.0674 0.250 1 05/10/2024 13:27 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 13:27 WG2283754 (S) Nitrobenzene-d5 114 31.0-160 05/10/2024 13:27 WG2283754 (S) 2-Fluorobiphenyl 112 48.0-148 05/10/2024 13:27 WG2283754 (S) p-Terphenyl-d14 105 37.0-146 05/10/2024 13:27 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 10 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 10 of 28 SAMPLE RESULTS - 06 L1734148 33-MW9 Collected date/time: 05/07/24 11:55 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/12/2024 07:00 WG2284762 Chloroethane U 0.192 5.00 1 05/12/2024 07:00 WG2284762 Chloromethane U J3 0.960 2.50 1 05/12/2024 07:00 WG2284762 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 07:00 WG2284762 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 07:00 WG2284762 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 07:00 WG2284762 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 07:00 WG2284762 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 07:00 WG2284762 Ethylbenzene U 0.137 1.00 1 05/12/2024 07:00 WG2284762 Tetrachloroethene U 0.300 1.00 1 05/12/2024 07:00 WG2284762 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 07:00 WG2284762 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 07:00 WG2284762 Trichloroethene U J4 0.190 1.00 1 05/12/2024 07:00 WG2284762 Vinyl chloride U 0.234 1.00 1 05/12/2024 07:00 WG2284762 (S) Toluene-d8 97.7 80.0-120 05/12/2024 07:00 WG2284762 (S) 4-Bromofluorobenzene 112 77.0-126 05/12/2024 07:00 WG2284762 (S) 1,2-Dichloroethane-d4 89.6 70.0-130 05/12/2024 07:00 WG2284762 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range U 22.2 100 1 05/21/2024 01:38 WG2289893 C28-C40 Oil Range U 11.8 100 1 05/21/2024 01:38 WG2289893 (S) o-Terphenyl 118 52.0-156 05/21/2024 01:38 WG2289893 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene U 0.0190 0.0500 1 05/10/2024 13:45 WG2283754 Acenaphthene U 0.0190 0.0500 1 05/10/2024 13:45 WG2283754 Acenaphthylene U 0.0171 0.0500 1 05/10/2024 13:45 WG2283754 Benzo(a)anthracene U 0.0203 0.0500 1 05/10/2024 13:45 WG2283754 Benzo(a)pyrene U 0.0184 0.0500 1 05/10/2024 13:45 WG2283754 Benzo(b)fluoranthene U 0.0168 0.0500 1 05/10/2024 13:45 WG2283754 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/10/2024 13:45 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 13:45 WG2283754 Chrysene U 0.0179 0.0500 1 05/10/2024 13:45 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 13:45 WG2283754 Fluoranthene U 0.0270 0.100 1 05/10/2024 13:45 WG2283754 Fluorene U 0.0169 0.0500 1 05/10/2024 13:45 WG2283754 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/10/2024 13:45 WG2283754 Naphthalene U 0.0917 0.250 1 05/10/2024 13:45 WG2283754 Phenanthrene U 0.0180 0.0500 1 05/10/2024 13:45 WG2283754 Pyrene 0.0212 J 0.0169 0.0500 1 05/10/2024 13:45 WG2283754 1-Methylnaphthalene U 0.0687 0.250 1 05/10/2024 13:45 WG2283754 2-Methylnaphthalene U 0.0674 0.250 1 05/10/2024 13:45 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 13:45 WG2283754 (S) Nitrobenzene-d5 114 31.0-160 05/10/2024 13:45 WG2283754 (S) 2-Fluorobiphenyl 113 48.0-148 05/10/2024 13:45 WG2283754 (S) p-Terphenyl-d14 106 37.0-146 05/10/2024 13:45 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 11 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 11 of 28 SAMPLE RESULTS - 07 L1734148 33-MW12FP Collected date/time: 05/07/24 12:50 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/12/2024 07:19 WG2284762 Chloroethane U 0.192 5.00 1 05/12/2024 07:19 WG2284762 Chloromethane U J3 0.960 2.50 1 05/12/2024 07:19 WG2284762 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 07:19 WG2284762 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 07:19 WG2284762 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 07:19 WG2284762 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 07:19 WG2284762 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 07:19 WG2284762 Ethylbenzene 0.191 J 0.137 1.00 1 05/12/2024 07:19 WG2284762 Tetrachloroethene U 0.300 1.00 1 05/12/2024 07:19 WG2284762 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 07:19 WG2284762 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 07:19 WG2284762 Trichloroethene U J4 0.190 1.00 1 05/12/2024 07:19 WG2284762 Vinyl chloride U 0.234 1.00 1 05/12/2024 07:19 WG2284762 (S) Toluene-d8 97.4 80.0-120 05/12/2024 07:19 WG2284762 (S) 4-Bromofluorobenzene 110 77.0-126 05/12/2024 07:19 WG2284762 (S) 1,2-Dichloroethane-d4 87.3 70.0-130 05/12/2024 07:19 WG2284762 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 31.4 J J3 22.2 100 1 05/16/2024 10:31 WG2285750 C28-C40 Oil Range 385 11.8 100 1 05/16/2024 10:31 WG2285750 (S) o-Terphenyl 104 52.0-156 05/16/2024 10:31 WG2285750 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene U 0.0190 0.0500 1 05/10/2024 14:03 WG2283754 Acenaphthene 0.0931 0.0190 0.0500 1 05/10/2024 14:03 WG2283754 Acenaphthylene U 0.0171 0.0500 1 05/10/2024 14:03 WG2283754 Benzo(a)anthracene U 0.0203 0.0500 1 05/10/2024 14:03 WG2283754 Benzo(a)pyrene U 0.0184 0.0500 1 05/10/2024 14:03 WG2283754 Benzo(b)fluoranthene U 0.0168 0.0500 1 05/10/2024 14:03 WG2283754 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/10/2024 14:03 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 14:03 WG2283754 Chrysene U 0.0179 0.0500 1 05/10/2024 14:03 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 14:03 WG2283754 Fluoranthene U 0.0270 0.100 1 05/10/2024 14:03 WG2283754 Fluorene U 0.0169 0.0500 1 05/10/2024 14:03 WG2283754 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/10/2024 14:03 WG2283754 Naphthalene 1.34 0.0917 0.250 1 05/10/2024 14:03 WG2283754 Phenanthrene U 0.0180 0.0500 1 05/10/2024 14:03 WG2283754 Pyrene U 0.0169 0.0500 1 05/10/2024 14:03 WG2283754 1-Methylnaphthalene 0.276 0.0687 0.250 1 05/10/2024 14:03 WG2283754 2-Methylnaphthalene 0.137 J 0.0674 0.250 1 05/10/2024 14:03 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 14:03 WG2283754 (S) Nitrobenzene-d5 108 31.0-160 05/10/2024 14:03 WG2283754 (S) 2-Fluorobiphenyl 108 48.0-148 05/10/2024 14:03 WG2283754 (S) p-Terphenyl-d14 103 37.0-146 05/10/2024 14:03 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 12 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 12 of 28 SAMPLE RESULTS - 08 L1734148 33-MW4AA Collected date/time: 05/07/24 14:05 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.941 10.0 10 05/12/2024 08:54 WG2284762 Chloroethane U 1.92 50.0 10 05/12/2024 08:54 WG2284762 Chloromethane U J3 9.60 25.0 10 05/12/2024 08:54 WG2284762 1,1-Dichloroethane U 1.00 10.0 10 05/12/2024 08:54 WG2284762 1,2-Dichloroethane U 0.819 10.0 10 05/12/2024 08:54 WG2284762 1,1-Dichloroethene U 1.88 10.0 10 05/12/2024 08:54 WG2284762 cis-1,2-Dichloroethene U 1.26 10.0 10 05/12/2024 08:54 WG2284762 trans-1,2-Dichloroethene U 1.49 10.0 10 05/12/2024 08:54 WG2284762 Ethylbenzene 19.3 1.37 10.0 10 05/12/2024 08:54 WG2284762 Tetrachloroethene U 3.00 10.0 10 05/12/2024 08:54 WG2284762 1,1,1-Trichloroethane U 1.49 10.0 10 05/12/2024 08:54 WG2284762 1,1,2-Trichloroethane U 1.58 10.0 10 05/12/2024 08:54 WG2284762 Trichloroethene U J4 1.90 10.0 10 05/12/2024 08:54 WG2284762 Vinyl chloride U 2.34 10.0 10 05/12/2024 08:54 WG2284762 (S) Toluene-d8 95.1 80.0-120 05/12/2024 08:54 WG2284762 (S) 4-Bromofluorobenzene 111 77.0-126 05/12/2024 08:54 WG2284762 (S) 1,2-Dichloroethane-d4 90.4 70.0-130 05/12/2024 08:54 WG2284762 Sample Narrative: L1734148-08 WG2284762: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 469 J3 22.2 100 1 05/16/2024 10:52 WG2285750 C28-C40 Oil Range 410 11.8 100 1 05/16/2024 10:52 WG2285750 (S) o-Terphenyl 621 J1 52.0-156 05/16/2024 10:52 WG2285750 Sample Narrative: L1734148-08 WG2285750: Surrogate failure due to matrix interference Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene 0.604 0.0190 0.0500 1 05/10/2024 14:21 WG2283754 Acenaphthene 13.7 0.0190 0.0500 1 05/10/2024 14:21 WG2283754 Acenaphthylene 0.527 0.0171 0.0500 1 05/10/2024 14:21 WG2283754 Benzo(a)anthracene U 0.0203 0.0500 1 05/10/2024 14:21 WG2283754 Benzo(a)pyrene U 0.0184 0.0500 1 05/10/2024 14:21 WG2283754 Benzo(b)fluoranthene U 0.0168 0.0500 1 05/10/2024 14:21 WG2283754 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/10/2024 14:21 WG2283754 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/10/2024 14:21 WG2283754 Chrysene U 0.0179 0.0500 1 05/10/2024 14:21 WG2283754 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/10/2024 14:21 WG2283754 Fluoranthene 0.176 0.0270 0.100 1 05/10/2024 14:21 WG2283754 Fluorene 3.25 0.0169 0.0500 1 05/10/2024 14:21 WG2283754 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/10/2024 14:21 WG2283754 Naphthalene 95.1 0.0917 0.250 1 05/10/2024 14:21 WG2283754 Phenanthrene 2.67 0.0180 0.0500 1 05/10/2024 14:21 WG2283754 Pyrene 0.358 0.0169 0.0500 1 05/10/2024 14:21 WG2283754 1-Methylnaphthalene 29.3 0.0687 0.250 1 05/10/2024 14:21 WG2283754 2-Methylnaphthalene 18.1 0.0674 0.250 1 05/10/2024 14:21 WG2283754 2-Chloronaphthalene U 0.0682 0.250 1 05/10/2024 14:21 WG2283754 (S) Nitrobenzene-d5 119 31.0-160 05/10/2024 14:21 WG2283754 (S) 2-Fluorobiphenyl 113 48.0-148 05/10/2024 14:21 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 13 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 13 of 28 SAMPLE RESULTS - 08 L1734148 33-MW4AA Collected date/time: 05/07/24 14:05 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time (S) p-Terphenyl-d14 107 37.0-146 05/10/2024 14:21 WG2283754 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 14 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 14 of 28 SAMPLE RESULTS - 09 L1734148 TB01-05072024 Collected date/time: 05/07/24 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/12/2024 03:21 WG2284825 Chloroethane U 0.192 5.00 1 05/12/2024 03:21 WG2284825 Chloromethane U 0.960 2.50 1 05/12/2024 03:21 WG2284825 1,1-Dichloroethane U 0.100 1.00 1 05/12/2024 03:21 WG2284825 1,2-Dichloroethane U 0.0819 1.00 1 05/12/2024 03:21 WG2284825 1,1-Dichloroethene U 0.188 1.00 1 05/12/2024 03:21 WG2284825 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/2024 03:21 WG2284825 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/2024 03:21 WG2284825 Ethylbenzene U 0.137 1.00 1 05/12/2024 03:21 WG2284825 Tetrachloroethene U 0.300 1.00 1 05/12/2024 03:21 WG2284825 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/2024 03:21 WG2284825 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/2024 03:21 WG2284825 Trichloroethene U 0.190 1.00 1 05/12/2024 03:21 WG2284825 Vinyl chloride U 0.234 1.00 1 05/12/2024 03:21 WG2284825 (S) Toluene-d8 114 80.0-120 05/12/2024 03:21 WG2284825 (S) 4-Bromofluorobenzene 110 77.0-126 05/12/2024 03:21 WG2284825 (S) 1,2-Dichloroethane-d4 95.9 70.0-130 05/12/2024 03:21 WG2284825 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 15 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 15 of 28 QUALITY CONTROL SUMMARYWG2284762 Volatile Organic Compounds (GC/MS) by Method 8260B L1734148-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R4069604-3 05/12/24 02:16 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Chloroethane U 0.192 5.00 Chloromethane U 0.960 2.50 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 Ethylbenzene U 0.137 1.00 Tetrachloroethene U 0.300 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Vinyl chloride U 0.234 1.00 (S) Toluene-d8 97.3 80.0-120 (S) 4-Bromofluorobenzene 110 77.0-126 (S) 1,2-Dichloroethane-d4 87.3 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4069604-1 05/12/24 01:19 • (LCSD) R4069604-2 05/12/24 01:38 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 5.19 5.45 104 109 70.0-123 4.89 20 Chloroethane 5.00 4.34 4.68 86.8 93.6 47.0-150 J J 7.54 20 Chloromethane 5.00 3.62 4.87 72.4 97.4 41.0-142 J3 29.4 20 1,1-Dichloroethane 5.00 5.17 5.45 103 109 70.0-126 5.27 20 1,2-Dichloroethane 5.00 4.81 5.32 96.2 106 70.0-128 10.1 20 1,1-Dichloroethene 5.00 5.07 5.29 101 106 71.0-124 4.25 20 cis-1,2-Dichloroethene 5.00 5.17 5.36 103 107 73.0-120 3.61 20 trans-1,2-Dichloroethene 5.00 5.34 5.47 107 109 73.0-120 2.41 20 Ethylbenzene 5.00 5.22 5.44 104 109 79.0-123 4.13 20 Tetrachloroethene 5.00 5.78 6.05 116 121 72.0-132 4.56 20 1,1,1-Trichloroethane 5.00 5.32 5.64 106 113 73.0-124 5.84 20 1,1,2-Trichloroethane 5.00 5.14 5.17 103 103 80.0-120 0.582 20 Trichloroethene 5.00 5.93 6.33 119 127 78.0-124 J4 6.53 20 Vinyl chloride 5.00 4.61 4.87 92.2 97.4 67.0-131 5.49 20 (S) Toluene-d8 96.8 96.0 80.0-120 (S) 4-Bromofluorobenzene 112 112 77.0-126 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 16 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 16 of 28 QUALITY CONTROL SUMMARYWG2284762 Volatile Organic Compounds (GC/MS) by Method 8260B L1734148-01,02,03,04,05,06,07,08 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4069604-1 05/12/24 01:19 • (LCSD) R4069604-2 05/12/24 01:38 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% (S) 1,2-Dichloroethane-d4 89.1 90.3 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 17 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 17 of 28 QUALITY CONTROL SUMMARYWG2284825 Volatile Organic Compounds (GC/MS) by Method 8260B L1734148-09 Method Blank (MB) (MB) R4068949-2 05/12/24 02:23 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Chloroethane U 0.192 5.00 Chloromethane U 0.960 2.50 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 Ethylbenzene U 0.137 1.00 Tetrachloroethene U 0.300 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Vinyl chloride U 0.234 1.00 (S) Toluene-d8 115 80.0-120 (S) 4-Bromofluorobenzene 108 77.0-126 (S) 1,2-Dichloroethane-d4 96.9 70.0-130 Laboratory Control Sample (LCS) (LCS) R4068949-1 05/12/24 01:41 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Benzene 5.00 5.18 104 70.0-123 Chloroethane 5.00 5.98 120 47.0-150 Chloromethane 5.00 4.30 86.0 41.0-142 1,1-Dichloroethane 5.00 4.97 99.4 70.0-126 1,2-Dichloroethane 5.00 4.87 97.4 70.0-128 1,1-Dichloroethene 5.00 5.27 105 71.0-124 cis-1,2-Dichloroethene 5.00 5.28 106 73.0-120 trans-1,2-Dichloroethene 5.00 5.64 113 73.0-120 Ethylbenzene 5.00 5.52 110 79.0-123 Tetrachloroethene 5.00 6.17 123 72.0-132 1,1,1-Trichloroethane 5.00 5.45 109 73.0-124 1,1,2-Trichloroethane 5.00 5.19 104 80.0-120 Trichloroethene 5.00 5.66 113 78.0-124 Vinyl chloride 5.00 5.36 107 67.0-131 (S) Toluene-d8 113 80.0-120 (S) 4-Bromofluorobenzene 112 77.0-126 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 18 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 18 of 28 QUALITY CONTROL SUMMARYWG2284825 Volatile Organic Compounds (GC/MS) by Method 8260B L1734148-09 Laboratory Control Sample (LCS) (LCS) R4068949-1 05/12/24 01:41 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% (S) 1,2-Dichloroethane-d4 98.4 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 19 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 19 of 28 QUALITY CONTROL SUMMARYWG2285749 Semi-Volatile Organic Compounds (GC) by Method 8015 L1734148-02,04,05 Method Blank (MB) (MB) R4070953-1 05/17/24 00:10 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l C10-C28 Diesel Range U 22.2 100 C28-C40 Oil Range U 11.8 100 (S) o-Terphenyl 114 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4070953-2 05/17/24 00:30 • (LCSD) R4070953-3 05/17/24 00:50 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% C10-C28 Diesel Range 1500 973 1310 64.9 87.3 50.0-150 J3 29.5 20 (S) o-Terphenyl 122 112 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 20 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 20 of 28 QUALITY CONTROL SUMMARYWG2285750 Semi-Volatile Organic Compounds (GC) by Method 8015 L1734148-07,08 Method Blank (MB) (MB) R4070686-1 05/16/24 09:31 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l C10-C28 Diesel Range U 22.2 100 C28-C40 Oil Range U 11.8 100 (S) o-Terphenyl 101 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4070686-2 05/16/24 09:51 • (LCSD) R4070686-3 05/16/24 10:11 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% C10-C28 Diesel Range 1500 1680 1330 112 88.7 50.0-150 J3 23.3 20 (S) o-Terphenyl 78.5 56.5 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 21 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 21 of 28 QUALITY CONTROL SUMMARYWG2288850 Semi-Volatile Organic Compounds (GC) by Method 8015 L1734148-03 Method Blank (MB) (MB) R4071934-1 05/20/24 13:20 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l C10-C28 Diesel Range U 22.2 100 C28-C40 Oil Range U 11.8 100 (S) o-Terphenyl 127 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4071934-2 05/20/24 13:41 • (LCSD) R4071934-3 05/20/24 14:01 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% C10-C28 Diesel Range 1500 1670 1580 111 105 50.0-150 5.54 20 (S) o-Terphenyl 137 136 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 22 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 22 of 28 QUALITY CONTROL SUMMARYWG2289893 Semi-Volatile Organic Compounds (GC) by Method 8015 L1734148-06 Method Blank (MB) (MB) R4071982-1 05/21/24 00:37 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l C10-C28 Diesel Range U 22.2 100 C28-C40 Oil Range U 11.8 100 (S) o-Terphenyl 117 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4071982-2 05/21/24 00:57 • (LCSD) R4071982-3 05/21/24 01:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% C10-C28 Diesel Range 1500 1350 1420 90.0 94.7 50.0-150 5.05 20 (S) o-Terphenyl 121 118 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 23 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 23 of 28 QUALITY CONTROL SUMMARYWG2283754 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM L1734148-02,03,04,05,06,07,08 Method Blank (MB) (MB) R4068439-3 05/10/24 10:12 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Anthracene U 0.0190 0.0500 Acenaphthene U 0.0190 0.0500 Acenaphthylene U 0.0171 0.0500 Benzo(a)anthracene U 0.0203 0.0500 Benzo(a)pyrene U 0.0184 0.0500 Benzo(b)fluoranthene U 0.0168 0.0500 Benzo(g,h,i)perylene U 0.0184 0.0500 Benzo(k)fluoranthene U 0.0202 0.0500 Chrysene U 0.0179 0.0500 Dibenz(a,h)anthracene U 0.0160 0.0500 Fluoranthene U 0.0270 0.100 Fluorene U 0.0169 0.0500 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 Naphthalene U 0.0917 0.250 Phenanthrene U 0.0180 0.0500 Pyrene U 0.0169 0.0500 1-Methylnaphthalene U 0.0687 0.250 2-Methylnaphthalene U 0.0674 0.250 2-Chloronaphthalene U 0.0682 0.250 (S) Nitrobenzene-d5 119 31.0-160 (S) 2-Fluorobiphenyl 110 48.0-148 (S) p-Terphenyl-d14 100 37.0-146 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4068439-1 05/10/24 09:37 • (LCSD) R4068439-2 05/10/24 09:55 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Anthracene 2.00 2.30 2.19 115 109 67.0-150 4.90 20 Acenaphthene 2.00 2.10 2.03 105 102 65.0-138 3.39 20 Acenaphthylene 2.00 2.33 2.24 117 112 66.0-140 3.94 20 Benzo(a)anthracene 2.00 2.30 2.17 115 108 61.0-140 5.82 20 Benzo(a)pyrene 2.00 1.88 1.82 94.0 91.0 60.0-143 3.24 20 Benzo(b)fluoranthene 2.00 1.75 1.69 87.5 84.5 58.0-141 3.49 20 Benzo(g,h,i)perylene 2.00 1.65 1.62 82.5 81.0 52.0-153 1.83 20 Benzo(k)fluoranthene 2.00 1.65 1.64 82.5 82.0 58.0-148 0.608 20 Chrysene 2.00 2.03 1.96 102 98.0 64.0-144 3.51 20 Dibenz(a,h)anthracene 2.00 1.79 1.73 89.5 86.5 52.0-155 3.41 20 Fluoranthene 2.00 2.23 2.14 111 107 69.0-153 4.12 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 24 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 24 of 28 QUALITY CONTROL SUMMARYWG2283754 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM L1734148-02,03,04,05,06,07,08 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4068439-1 05/10/24 09:37 • (LCSD) R4068439-2 05/10/24 09:55 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Fluorene 2.00 2.26 2.18 113 109 64.0-136 3.60 20 Indeno(1,2,3-cd)pyrene 2.00 1.82 1.76 91.0 88.0 54.0-153 3.35 20 Naphthalene 2.00 2.10 2.03 105 102 61.0-137 3.39 20 Phenanthrene 2.00 2.14 2.07 107 104 62.0-137 3.33 20 Pyrene 2.00 2.04 1.95 102 97.5 60.0-142 4.51 20 1-Methylnaphthalene 2.00 2.22 2.12 111 106 66.0-142 4.61 20 2-Methylnaphthalene 2.00 2.21 2.12 111 106 62.0-136 4.16 20 2-Chloronaphthalene 2.00 2.22 2.16 111 108 64.0-140 2.74 20 (S) Nitrobenzene-d5 122 118 31.0-160 (S) 2-Fluorobiphenyl 109 107 48.0-148 (S) p-Terphenyl-d14 95.5 92.0 37.0-146 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 25 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 25 of 28 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description J The identification of the analyte is acceptable; the reported value is an estimate. J1 Surrogate recovery limits have been exceeded; values are outside upper control limits. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 26 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 26 of 28 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 14:43 27 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734148 05/21/24 15:31 27 of 28 ANALYTICAL REPORT May 21, 2024 UPRR - Jacobs Sample Delivery Group:L1734687 Samples Received:05/09/2024 Project Number:1990 Description:Ogden UT-SP Yard Site:2024 BIENNIAL SAMPLING EVENT Report To:Terence Mares 6440 S. Milrock Dr. Suite 300 Holladay, UT 84121 Entire Report Reviewed By: May 21, 2024 [Preliminary Report] Brittnie L Boyd Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 1 of 36 May 21, 2024 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 1 of 36 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 34-MW1 L1734687-01 6 34-MW10 L1734687-02 7 33-MW6FP L1734687-03 8 FD-01 L1734687-04 9 34-MW2 L1734687-05 10 34-MW9 L1734687-06 11 34-MW7D L1734687-07 12 FD-02 L1734687-08 13 22A-MW1 L1734687-09 14 TB02_05082024 L1734687-10 15 Qc: Quality Control Summary 16 Wet Chemistry by Method 2320 B-2011 16 Wet Chemistry by Method 353.2 19 Wet Chemistry by Method 9056A 20 Volatile Organic Compounds (GC) by Method RSK175 24 Volatile Organic Compounds (GC/MS) by Method 8260B 27 Semi-Volatile Organic Compounds (GC) by Method 8015 30 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM 31 Gl: Glossary of Terms 33 Al: Accreditations & Locations 34 Sc: Sample Chain of Custody 35 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 2 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 2 of 36 SAMPLE SUMMARY Collected by Collected date/time Received date/time 34-MW1 L1734687-01 GW AL 05/08/24 08:30 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285104 1 05/13/24 09:23 05/13/24 09:23 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 2 05/16/24 12:06 05/16/24 12:06 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2285814 1 05/14/24 22:56 05/14/24 22:56 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2285814 5 05/14/24 23:37 05/14/24 23:37 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285075 1 05/14/24 11:25 05/14/24 11:25 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 04:23 05/13/24 04:23 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time 34-MW10 L1734687-02 GW AL 05/08/24 09:50 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285105 1 05/13/24 09:48 05/13/24 09:48 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 1 05/16/24 12:07 05/16/24 12:07 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2285814 1 05/14/24 23:51 05/14/24 23:51 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2285814 5 05/15/24 00:05 05/15/24 00:05 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285075 1 05/14/24 11:28 05/14/24 11:28 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 04:46 05/13/24 04:46 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time 33-MW6FP L1734687-03 GW AL 05/08/24 11:00 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 05:08 05/13/24 05:08 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2286976 1 05/16/24 00:29 05/19/24 14:08 MAA Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2284858 1 05/14/24 18:04 05/15/24 06:30 AMS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2284858 10 05/14/24 18:04 05/15/24 22:21 DSH Mt. Juliet, TN Collected by Collected date/time Received date/time FD-01 L1734687-04 GW AL 05/08/24 11:05 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 05:31 05/13/24 05:31 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2286976 1 05/16/24 00:29 05/19/24 15:09 MAA Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2284858 1 05/14/24 18:04 05/15/24 06:10 AMS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM WG2284858 10 05/14/24 18:04 05/15/24 22:02 DSH Mt. Juliet, TN Collected by Collected date/time Received date/time 34-MW2 L1734687-05 GW AL 05/08/24 12:15 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285570 1 05/14/24 11:19 05/14/24 11:19 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 1 05/16/24 12:09 05/16/24 12:09 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2285814 1 05/15/24 00:18 05/15/24 00:18 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285075 1 05/14/24 11:31 05/14/24 11:31 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 05:54 05/13/24 05:54 DYW Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 3 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 3 of 36 SAMPLE SUMMARY Collected by Collected date/time Received date/time 34-MW9 L1734687-06 GW AL 05/08/24 13:05 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285105 1 05/13/24 09:54 05/13/24 09:54 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 1 05/16/24 12:10 05/16/24 12:10 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286191 1 05/16/24 02:07 05/16/24 02:07 ERP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285075 1 05/14/24 11:34 05/14/24 11:34 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 06:17 05/13/24 06:17 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time 34-MW7D L1734687-07 GW AL 05/08/24 14:10 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285105 1 05/13/24 09:33 05/13/24 09:33 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 1 05/16/24 12:15 05/16/24 12:15 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286191 10 05/16/24 03:11 05/16/24 03:11 ERP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285461 1 05/15/24 09:04 05/15/24 09:04 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 06:40 05/13/24 06:40 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time FD-02 L1734687-08 GW AL 05/08/24 14:15 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285105 1 05/13/24 09:59 05/13/24 09:59 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 1 05/16/24 12:20 05/16/24 12:20 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286191 1 05/16/24 04:14 05/16/24 04:14 ERP Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286191 10 05/16/24 04:30 05/16/24 04:30 ERP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285075 1 05/14/24 11:37 05/14/24 11:37 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 07:03 05/13/24 07:03 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time 22A-MW1 L1734687-09 GW AL 05/08/24 15:45 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285105 1 05/13/24 10:44 05/13/24 10:44 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2286616 1 05/16/24 12:21 05/16/24 12:21 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286191 1 05/16/24 04:49 05/16/24 04:49 ERP Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286191 5 05/16/24 05:08 05/16/24 05:08 ERP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285461 1 05/15/24 09:09 05/15/24 09:09 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 07:26 05/13/24 07:26 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time TB02_05082024 L1734687-10 GW AL 05/08/24 00:00 05/09/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2285152 1 05/13/24 00:57 05/13/24 00:57 DYW Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 4 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 4 of 36 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Brittnie L Boyd Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 5 of 36 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 5 of 36 SAMPLE RESULTS - 01 L1734687 34-MW1 Collected date/time: 05/08/24 08:30 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 205000 8450 20000 1 05/13/2024 09:23 WG2285104 Sample Narrative: L1734687-01 WG2285104: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite 3260 100 200 2 05/16/2024 12:06 WG2286616 Sample Narrative: L1734687-01 WG2286616: Dilution due to matrix interference Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 245000 1900 5000 5 05/14/2024 23:37 WG2285814 Sulfate 40800 594 5000 1 05/14/2024 22:56 WG2285814 Sample Narrative: L1734687-01 WG2285814: Dilution due to matrix interference Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 05/14/2024 11:25 WG2285075 Ethane U 4.07 13.0 1 05/14/2024 11:25 WG2285075 Ethene U 4.26 13.0 1 05/14/2024 11:25 WG2285075 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 04:23 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 04:23 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 04:23 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 04:23 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 04:23 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 04:23 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 04:23 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 04:23 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 04:23 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 04:23 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 04:23 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 04:23 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 04:23 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 04:23 WG2285152 (S) Toluene-d8 105 80.0-120 05/13/2024 04:23 WG2285152 (S) 4-Bromofluorobenzene 110 77.0-126 05/13/2024 04:23 WG2285152 (S) 1,2-Dichloroethane-d4 107 70.0-130 05/13/2024 04:23 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 6 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 6 of 36 SAMPLE RESULTS - 02 L1734687 34-MW10 Collected date/time: 05/08/24 09:50 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 596000 8450 20000 1 05/13/2024 09:48 WG2285105 Sample Narrative: L1734687-02 WG2285105: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 12:07 WG2286616 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 663000 1900 5000 5 05/15/2024 00:05 WG2285814 Sulfate 47500 594 5000 1 05/14/2024 23:51 WG2285814 Sample Narrative: L1734687-02 WG2285814: Dilution due to matrix interference Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 638 2.91 10.0 1 05/14/2024 11:28 WG2285075 Ethane U 4.07 13.0 1 05/14/2024 11:28 WG2285075 Ethene U 4.26 13.0 1 05/14/2024 11:28 WG2285075 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 04:46 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 04:46 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 04:46 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 04:46 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 04:46 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 04:46 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 04:46 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 04:46 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 04:46 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 04:46 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 04:46 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 04:46 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 04:46 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 04:46 WG2285152 (S) Toluene-d8 102 80.0-120 05/13/2024 04:46 WG2285152 (S) 4-Bromofluorobenzene 105 77.0-126 05/13/2024 04:46 WG2285152 (S) 1,2-Dichloroethane-d4 105 70.0-130 05/13/2024 04:46 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 7 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 7 of 36 SAMPLE RESULTS - 03 L1734687 33-MW6FP Collected date/time: 05/08/24 11:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 21.4 0.0941 1.00 1 05/13/2024 05:08 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 05:08 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 05:08 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 05:08 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 05:08 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 05:08 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 05:08 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 05:08 WG2285152 Ethylbenzene 26.9 0.137 1.00 1 05/13/2024 05:08 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 05:08 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 05:08 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 05:08 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 05:08 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 05:08 WG2285152 (S) Toluene-d8 101 80.0-120 05/13/2024 05:08 WG2285152 (S) 4-Bromofluorobenzene 112 77.0-126 05/13/2024 05:08 WG2285152 (S) 1,2-Dichloroethane-d4 103 70.0-130 05/13/2024 05:08 WG2285152 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 1340 22.2 100 1 05/19/2024 14:08 WG2286976 C28-C40 Oil Range U 11.8 100 1 05/19/2024 14:08 WG2286976 (S) o-Terphenyl 141 52.0-156 05/19/2024 14:08 WG2286976 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene 12.9 V 0.0190 0.0500 1 05/15/2024 06:30 WG2284858 Acenaphthene 113 0.190 0.500 10 05/15/2024 22:21 WG2284858 Acenaphthylene 3.16 0.0171 0.0500 1 05/15/2024 06:30 WG2284858 Benzo(a)anthracene 0.345 0.0203 0.0500 1 05/15/2024 06:30 WG2284858 Benzo(a)pyrene 0.0456 J 0.0184 0.0500 1 05/15/2024 06:30 WG2284858 Benzo(b)fluoranthene 0.0521 0.0168 0.0500 1 05/15/2024 06:30 WG2284858 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/15/2024 06:30 WG2284858 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/15/2024 06:30 WG2284858 Chrysene 0.360 0.0179 0.0500 1 05/15/2024 06:30 WG2284858 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/15/2024 06:30 WG2284858 Fluoranthene 5.12 0.0270 0.100 1 05/15/2024 06:30 WG2284858 Fluorene 40.0 V 0.0169 0.0500 1 05/15/2024 06:30 WG2284858 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/15/2024 06:30 WG2284858 Naphthalene 7.61 0.0917 0.250 1 05/15/2024 06:30 WG2284858 Phenanthrene 31.4 J3 V 0.0180 0.0500 1 05/15/2024 06:30 WG2284858 Pyrene 8.04 V 0.0169 0.0500 1 05/15/2024 06:30 WG2284858 1-Methylnaphthalene 140 0.687 2.50 10 05/15/2024 22:21 WG2284858 2-Methylnaphthalene 0.528 0.0674 0.250 1 05/15/2024 06:30 WG2284858 2-Chloronaphthalene U 0.0682 0.250 1 05/15/2024 06:30 WG2284858 (S) Nitrobenzene-d5 128 31.0-160 05/15/2024 22:21 WG2284858 (S) Nitrobenzene-d5 89.5 31.0-160 05/15/2024 06:30 WG2284858 (S) 2-Fluorobiphenyl 136 48.0-148 05/15/2024 22:21 WG2284858 (S) 2-Fluorobiphenyl 127 48.0-148 05/15/2024 06:30 WG2284858 (S) p-Terphenyl-d14 132 37.0-146 05/15/2024 22:21 WG2284858 (S) p-Terphenyl-d14 119 37.0-146 05/15/2024 06:30 WG2284858 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 8 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 8 of 36 SAMPLE RESULTS - 04 L1734687 FD-01 Collected date/time: 05/08/24 11:05 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 20.7 0.0941 1.00 1 05/13/2024 05:31 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 05:31 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 05:31 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 05:31 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 05:31 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 05:31 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 05:31 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 05:31 WG2285152 Ethylbenzene 26.1 0.137 1.00 1 05/13/2024 05:31 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 05:31 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 05:31 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 05:31 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 05:31 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 05:31 WG2285152 (S) Toluene-d8 99.9 80.0-120 05/13/2024 05:31 WG2285152 (S) 4-Bromofluorobenzene 111 77.0-126 05/13/2024 05:31 WG2285152 (S) 1,2-Dichloroethane-d4 101 70.0-130 05/13/2024 05:31 WG2285152 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time C10-C28 Diesel Range 2460 22.2 100 1 05/19/2024 15:09 WG2286976 C28-C40 Oil Range U 11.8 100 1 05/19/2024 15:09 WG2286976 (S) o-Terphenyl 128 52.0-156 05/19/2024 15:09 WG2286976 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Anthracene 12.8 0.0190 0.0500 1 05/15/2024 06:10 WG2284858 Acenaphthene 106 0.190 0.500 10 05/15/2024 22:02 WG2284858 Acenaphthylene 3.32 0.0171 0.0500 1 05/15/2024 06:10 WG2284858 Benzo(a)anthracene 0.305 0.0203 0.0500 1 05/15/2024 06:10 WG2284858 Benzo(a)pyrene 0.0470 J 0.0184 0.0500 1 05/15/2024 06:10 WG2284858 Benzo(b)fluoranthene 0.0425 J 0.0168 0.0500 1 05/15/2024 06:10 WG2284858 Benzo(g,h,i)perylene U 0.0184 0.0500 1 05/15/2024 06:10 WG2284858 Benzo(k)fluoranthene U 0.0202 0.0500 1 05/15/2024 06:10 WG2284858 Chrysene 0.366 0.0179 0.0500 1 05/15/2024 06:10 WG2284858 Dibenz(a,h)anthracene U 0.0160 0.0500 1 05/15/2024 06:10 WG2284858 Fluoranthene 5.04 0.0270 0.100 1 05/15/2024 06:10 WG2284858 Fluorene 39.5 0.0169 0.0500 1 05/15/2024 06:10 WG2284858 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 1 05/15/2024 06:10 WG2284858 Naphthalene 7.91 0.0917 0.250 1 05/15/2024 06:10 WG2284858 Phenanthrene 29.2 0.0180 0.0500 1 05/15/2024 06:10 WG2284858 Pyrene 7.92 0.0169 0.0500 1 05/15/2024 06:10 WG2284858 1-Methylnaphthalene 129 0.687 2.50 10 05/15/2024 22:02 WG2284858 2-Methylnaphthalene 0.547 0.0674 0.250 1 05/15/2024 06:10 WG2284858 2-Chloronaphthalene U 0.0682 0.250 1 05/15/2024 06:10 WG2284858 (S) Nitrobenzene-d5 123 31.0-160 05/15/2024 22:02 WG2284858 (S) Nitrobenzene-d5 93.2 31.0-160 05/15/2024 06:10 WG2284858 (S) 2-Fluorobiphenyl 129 48.0-148 05/15/2024 22:02 WG2284858 (S) 2-Fluorobiphenyl 130 48.0-148 05/15/2024 06:10 WG2284858 (S) p-Terphenyl-d14 122 37.0-146 05/15/2024 06:10 WG2284858 (S) p-Terphenyl-d14 127 37.0-146 05/15/2024 22:02 WG2284858 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 9 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 9 of 36 SAMPLE RESULTS - 05 L1734687 34-MW2 Collected date/time: 05/08/24 12:15 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 376000 8450 20000 1 05/14/2024 11:19 WG2285570 Sample Narrative: L1734687-05 WG2285570: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 12:09 WG2286616 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 156000 379 1000 1 05/15/2024 00:18 WG2285814 Sulfate 91800 594 5000 1 05/15/2024 00:18 WG2285814 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 129 2.91 10.0 1 05/14/2024 11:31 WG2285075 Ethane U 4.07 13.0 1 05/14/2024 11:31 WG2285075 Ethene U 4.26 13.0 1 05/14/2024 11:31 WG2285075 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 05:54 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 05:54 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 05:54 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 05:54 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 05:54 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 05:54 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 05:54 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 05:54 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 05:54 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 05:54 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 05:54 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 05:54 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 05:54 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 05:54 WG2285152 (S) Toluene-d8 107 80.0-120 05/13/2024 05:54 WG2285152 (S) 4-Bromofluorobenzene 109 77.0-126 05/13/2024 05:54 WG2285152 (S) 1,2-Dichloroethane-d4 101 70.0-130 05/13/2024 05:54 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 10 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 10 of 36 SAMPLE RESULTS - 06 L1734687 34-MW9 Collected date/time: 05/08/24 13:05 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 308000 8450 20000 1 05/13/2024 09:54 WG2285105 Sample Narrative: L1734687-06 WG2285105: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 12:10 WG2286616 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 92800 379 1000 1 05/16/2024 02:07 WG2286191 Sulfate 34000 594 5000 1 05/16/2024 02:07 WG2286191 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 323 2.91 10.0 1 05/14/2024 11:34 WG2285075 Ethane U 4.07 13.0 1 05/14/2024 11:34 WG2285075 Ethene U 4.26 13.0 1 05/14/2024 11:34 WG2285075 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 06:17 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 06:17 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 06:17 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 06:17 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 06:17 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 06:17 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 06:17 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 06:17 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 06:17 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 06:17 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 06:17 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 06:17 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 06:17 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 06:17 WG2285152 (S) Toluene-d8 104 80.0-120 05/13/2024 06:17 WG2285152 (S) 4-Bromofluorobenzene 108 77.0-126 05/13/2024 06:17 WG2285152 (S) 1,2-Dichloroethane-d4 101 70.0-130 05/13/2024 06:17 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 11 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 11 of 36 SAMPLE RESULTS - 07 L1734687 34-MW7D Collected date/time: 05/08/24 14:10 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 639000 8450 20000 1 05/13/2024 09:33 WG2285105 Sample Narrative: L1734687-07 WG2285105: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 12:15 WG2286616 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 445000 V 3790 10000 10 05/16/2024 03:11 WG2286191 Sulfate 97300 J6 5940 50000 10 05/16/2024 03:11 WG2286191 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 669 2.91 10.0 1 05/15/2024 09:04 WG2285461 Ethane U 4.07 13.0 1 05/15/2024 09:04 WG2285461 Ethene U 4.26 13.0 1 05/15/2024 09:04 WG2285461 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 06:40 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 06:40 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 06:40 WG2285152 1,1-Dichloroethane 0.527 J 0.100 1.00 1 05/13/2024 06:40 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 06:40 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 06:40 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 06:40 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 06:40 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 06:40 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 06:40 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 06:40 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 06:40 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 06:40 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 06:40 WG2285152 (S) Toluene-d8 103 80.0-120 05/13/2024 06:40 WG2285152 (S) 4-Bromofluorobenzene 111 77.0-126 05/13/2024 06:40 WG2285152 (S) 1,2-Dichloroethane-d4 103 70.0-130 05/13/2024 06:40 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 12 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 12 of 36 SAMPLE RESULTS - 08 L1734687 FD-02 Collected date/time: 05/08/24 14:15 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 643000 8450 20000 1 05/13/2024 09:59 WG2285105 Sample Narrative: L1734687-08 WG2285105: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 12:20 WG2286616 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 443000 3790 10000 10 05/16/2024 04:30 WG2286191 Sulfate 110000 594 5000 1 05/16/2024 04:14 WG2286191 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 677 2.91 10.0 1 05/14/2024 11:37 WG2285075 Ethane U 4.07 13.0 1 05/14/2024 11:37 WG2285075 Ethene U 4.26 13.0 1 05/14/2024 11:37 WG2285075 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 07:03 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 07:03 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 07:03 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 07:03 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 07:03 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 07:03 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 07:03 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 07:03 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 07:03 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 07:03 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 07:03 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 07:03 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 07:03 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 07:03 WG2285152 (S) Toluene-d8 103 80.0-120 05/13/2024 07:03 WG2285152 (S) 4-Bromofluorobenzene 109 77.0-126 05/13/2024 07:03 WG2285152 (S) 1,2-Dichloroethane-d4 102 70.0-130 05/13/2024 07:03 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 13 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 13 of 36 SAMPLE RESULTS - 09 L1734687 22A-MW1 Collected date/time: 05/08/24 15:45 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 642000 8450 20000 1 05/13/2024 10:44 WG2285105 Sample Narrative: L1734687-09 WG2285105: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 12:21 WG2286616 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 234000 1900 5000 5 05/16/2024 05:08 WG2286191 Sulfate 21800 594 5000 1 05/16/2024 04:49 WG2286191 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 2650 2.91 10.0 1 05/15/2024 09:09 WG2285461 Ethane 13.1 4.07 13.0 1 05/15/2024 09:09 WG2285461 Ethene U 4.26 13.0 1 05/15/2024 09:09 WG2285461 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 07:26 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 07:26 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 07:26 WG2285152 1,1-Dichloroethane 1.73 0.100 1.00 1 05/13/2024 07:26 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 07:26 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 07:26 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 07:26 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 07:26 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 07:26 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 07:26 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 07:26 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 07:26 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 07:26 WG2285152 Vinyl chloride 6.31 0.234 1.00 1 05/13/2024 07:26 WG2285152 (S) Toluene-d8 102 80.0-120 05/13/2024 07:26 WG2285152 (S) 4-Bromofluorobenzene 108 77.0-126 05/13/2024 07:26 WG2285152 (S) 1,2-Dichloroethane-d4 103 70.0-130 05/13/2024 07:26 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 14 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 14 of 36 SAMPLE RESULTS - 10 L1734687 TB02_05082024 Collected date/time: 05/08/24 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/13/2024 00:57 WG2285152 Chloroethane U 0.192 5.00 1 05/13/2024 00:57 WG2285152 Chloromethane U 0.960 2.50 1 05/13/2024 00:57 WG2285152 1,1-Dichloroethane U 0.100 1.00 1 05/13/2024 00:57 WG2285152 1,2-Dichloroethane U 0.0819 1.00 1 05/13/2024 00:57 WG2285152 1,1-Dichloroethene U 0.188 1.00 1 05/13/2024 00:57 WG2285152 cis-1,2-Dichloroethene U 0.126 1.00 1 05/13/2024 00:57 WG2285152 trans-1,2-Dichloroethene U 0.149 1.00 1 05/13/2024 00:57 WG2285152 Ethylbenzene U 0.137 1.00 1 05/13/2024 00:57 WG2285152 Tetrachloroethene U 0.300 1.00 1 05/13/2024 00:57 WG2285152 1,1,1-Trichloroethane U 0.149 1.00 1 05/13/2024 00:57 WG2285152 1,1,2-Trichloroethane U 0.158 1.00 1 05/13/2024 00:57 WG2285152 Trichloroethene U 0.190 1.00 1 05/13/2024 00:57 WG2285152 Vinyl chloride U 0.234 1.00 1 05/13/2024 00:57 WG2285152 (S) Toluene-d8 104 80.0-120 05/13/2024 00:57 WG2285152 (S) 4-Bromofluorobenzene 103 77.0-126 05/13/2024 00:57 WG2285152 (S) 1,2-Dichloroethane-d4 105 70.0-130 05/13/2024 00:57 WG2285152 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 15 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 15 of 36 QUALITY CONTROL SUMMARYWG2285104 Wet Chemistry by Method 2320 B-2011 L1734687-01 Method Blank (MB) (MB) R4069056-2 05/13/24 08:56 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1734337-06 Original Sample (OS) • Duplicate (DUP) (OS) L1734337-06 05/13/24 09:12 • (DUP) R4069056-3 05/13/24 09:16 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 248000 249000 1 0.350 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 L1735063-03 Original Sample (OS) • Duplicate (DUP) (OS) L1735063-03 05/13/24 10:58 • (DUP) R4069056-4 05/13/24 11:01 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 67800 67000 1 1.10 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4069056-1 05/13/24 08:51 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 100000 100 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 16 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 16 of 36 QUALITY CONTROL SUMMARYWG2285105 Wet Chemistry by Method 2320 B-2011 L1734687-02,06,07,08,09 Method Blank (MB) (MB) R4068930-2 05/13/24 09:25 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1734687-07 Original Sample (OS) • Duplicate (DUP) (OS) L1734687-07 05/13/24 09:33 • (DUP) R4068930-3 05/13/24 09:39 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 639000 646000 1 1.04 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 L1735063-05 Original Sample (OS) • Duplicate (DUP) (OS) L1735063-05 05/13/24 11:44 • (DUP) R4068930-4 05/13/24 11:47 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 98900 101000 1 1.78 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4068930-1 05/13/24 09:18 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 95800 95.8 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 17 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 17 of 36 QUALITY CONTROL SUMMARYWG2285570 Wet Chemistry by Method 2320 B-2011 L1734687-05 Method Blank (MB) (MB) R4069582-2 05/14/24 09:17 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1733604-13 Original Sample (OS) • Duplicate (DUP) (OS) L1733604-13 05/14/24 09:35 • (DUP) R4069582-3 05/14/24 09:39 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 564000 563000 1 0.270 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 L1734827-01 Original Sample (OS) • Duplicate (DUP) (OS) L1734827-01 05/14/24 11:41 • (DUP) R4069582-4 05/14/24 11:46 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 176000 177000 1 0.289 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4069582-1 05/14/24 09:12 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 103000 103 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 18 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 18 of 36 QUALITY CONTROL SUMMARYWG2286616 Wet Chemistry by Method 353.2 L1734687-01,02,05,06,07,08,09 Method Blank (MB) (MB) R4070599-1 05/16/24 12:00 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate-Nitrite U 50.0 100 L1734687-07 Original Sample (OS) • Duplicate (DUP) (OS) L1734687-07 05/16/24 12:15 • (DUP) R4070599-3 05/16/24 12:16 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate-Nitrite U U 1 0.000 20 L1734690-01 Original Sample (OS) • Duplicate (DUP) (OS) L1734690-01 05/16/24 12:23 • (DUP) R4070599-6 05/16/24 12:24 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate-Nitrite U U 1 0.000 20 Laboratory Control Sample (LCS) (LCS) R4070599-2 05/16/24 12:01 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate-Nitrite 2500 2530 101 90.0-110 L1734687-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-07 05/16/24 12:15 • (MS) R4070599-4 05/16/24 12:18 • (MSD) R4070599-5 05/16/24 12:19 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate-Nitrite 2500 U 2500 2530 100 101 1 90.0-110 1.19 20 L1734690-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1734690-01 05/16/24 12:23 • (MS) R4070599-7 05/16/24 12:25 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Nitrate-Nitrite 2500 U 2570 103 1 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 19 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 19 of 36 QUALITY CONTROL SUMMARYWG2285814 Wet Chemistry by Method 9056A L1734687-01,02,05 Method Blank (MB) (MB) R4069886-1 05/14/24 12:55 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Chloride U 379 1000 Sulfate U 594 5000 L1734596-05 Original Sample (OS) • Duplicate (DUP) (OS) L1734596-05 05/14/24 17:27 • (DUP) R4069886-3 05/14/24 17:41 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 6480 6580 1 1.54 15 Sulfate 11800 11900 1 0.499 15 L1734662-02 Original Sample (OS) • Duplicate (DUP) (OS) L1734662-02 05/14/24 21:20 • (DUP) R4069886-6 05/14/24 21:34 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 4690 4840 1 3.07 15 Sulfate 18100 18500 1 1.92 15 Laboratory Control Sample (LCS) (LCS) R4069886-2 05/14/24 13:08 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Chloride 40000 39100 97.8 80.0-120 Sulfate 40000 38500 96.3 80.0-120 L1734596-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734596-05 05/14/24 17:27 • (MS) R4069886-4 05/14/24 17:54 • (MSD) R4069886-5 05/14/24 18:08 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloride 40000 6480 44900 45200 96.1 96.7 1 80.0-120 0.576 15 Sulfate 40000 11800 49100 49200 93.2 93.5 1 80.0-120 0.245 15 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 20 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 20 of 36 QUALITY CONTROL SUMMARYWG2285814 Wet Chemistry by Method 9056A L1734687-01,02,05 L1734662-02 Original Sample (OS) • Matrix Spike (MS) (OS) L1734662-02 05/14/24 21:20 • (MS) R4069886-7 05/14/24 21:48 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Chloride 40000 4690 43500 97.0 1 80.0-120 Sulfate 40000 18100 54700 91.4 1 80.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 21 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 21 of 36 QUALITY CONTROL SUMMARYWG2286191 Wet Chemistry by Method 9056A L1734687-06,07,08,09 Method Blank (MB) (MB) R4071137-1 05/15/24 10:33 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Chloride U 379 1000 Sulfate U 594 5000 L1734687-07 Original Sample (OS) • Duplicate (DUP) (OS) L1734687-07 05/16/24 03:11 • (DUP) R4071137-5 05/16/24 03:27 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 445000 445000 10 0.0146 15 Sulfate 97300 99400 10 2.12 15 L1733846-01 Original Sample (OS) • Duplicate (DUP) (OS) L1733846-01 05/15/24 23:44 • (DUP) R4071137-3 05/16/24 00:00 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 18500 18600 1 0.749 15 Sulfate 80900 80700 1 0.252 15 Laboratory Control Sample (LCS) (LCS) R4071137-2 05/15/24 10:49 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Chloride 40000 39200 97.9 80.0-120 Sulfate 40000 37400 93.5 80.0-120 L1733846-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1733846-01 05/15/24 23:44 • (MS) R4071137-4 05/16/24 00:16 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Chloride 40000 18500 55200 91.7 1 80.0-120 Sulfate 40000 80900 105000 59.5 1 80.0-120 J6 Sample Narrative: MS: SO4 spike failed due to sample matrix 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 22 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 22 of 36 QUALITY CONTROL SUMMARYWG2286191 Wet Chemistry by Method 9056A L1734687-06,07,08,09 L1734687-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-07 05/16/24 03:11 • (MS) R4071137-6 05/16/24 03:42 • (MSD) R4071137-7 05/16/24 03:58 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloride 40000 445000 393000 391000 0.000 0.000 10 80.0-120 V V 0.503 15 Sulfate 40000 97300 117000 113000 49.5 39.3 10 80.0-120 J6 J6 3.55 15 Sample Narrative: MS: spike failed due to sample matrix MSD: spike failed due to sample matrix L1734767-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734767-05 05/16/24 09:26 • (MS) R4071137-8 05/16/24 09:45 • (MSD) R4071137-9 05/16/24 10:03 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloride 40000 14400 51700 52500 93.3 95.1 1 80.0-120 1.43 15 Sulfate 40000 3210 40500 41200 93.1 95.0 1 80.0-120 1.86 15 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 23 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 23 of 36 QUALITY CONTROL SUMMARYWG2285075 Volatile Organic Compounds (GC) by Method RSK175 L1734687-01,02,05,06,08 Method Blank (MB) (MB) R4069368-2 05/14/24 10:05 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 Ethane U 4.07 13.0 Ethene U 4.26 13.0 L1734469-07 Original Sample (OS) • Duplicate (DUP) (OS) L1734469-07 05/14/24 10:11 • (DUP) R4069368-3 05/14/24 11:11 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 L1734543-01 Original Sample (OS) • Duplicate (DUP) (OS) L1734543-01 05/14/24 11:15 • (DUP) R4069368-4 05/14/24 11:57 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4069368-1 05/14/24 10:01 • (LCSD) R4069368-5 05/14/24 12:01 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 65.7 63.0 96.9 92.9 85.0-115 4.20 20 Ethane 129 114 118 88.4 91.5 85.0-115 3.45 20 Ethene 127 114 116 89.8 91.3 85.0-115 1.74 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 24 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 24 of 36 QUALITY CONTROL SUMMARYWG2285461 Volatile Organic Compounds (GC) by Method RSK175 L1734687-07,09 Method Blank (MB) (MB) R4069870-2 05/15/24 09:01 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 Ethane U 4.07 13.0 Ethene U 4.26 13.0 L1735016-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735016-01 05/15/24 09:14 • (DUP) R4069870-3 05/15/24 10:50 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 L1735016-09 Original Sample (OS) • Duplicate (DUP) (OS) L1735016-09 05/15/24 10:53 • (DUP) R4069870-4 05/15/24 11:42 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4069870-1 05/15/24 08:58 • (LCSD) R4069870-7 05/15/24 11:51 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 62.0 63.9 91.4 94.2 85.0-115 3.02 20 Ethane 129 116 116 89.9 89.9 85.0-115 0.000 20 Ethene 127 116 116 91.3 91.3 85.0-115 0.000 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 25 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 25 of 36 QUALITY CONTROL SUMMARYWG2285461 Volatile Organic Compounds (GC) by Method RSK175 L1734687-07,09 L1734687-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-07 05/15/24 09:04 • (MS) R4069870-5 05/15/24 11:45 • (MSD) R4069870-6 05/15/24 11:48 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Methane 67.8 669 732 734 92.9 95.9 1 50.0-150 0.273 20 Ethane 129 U 141 143 109 111 1 50.0-150 1.41 20 Ethene 127 U 138 139 109 109 1 50.0-150 0.722 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 26 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 26 of 36 QUALITY CONTROL SUMMARYWG2285152 Volatile Organic Compounds (GC/MS) by Method 8260B L1734687-01,02,03,04,05,06,07,08,09,10 Method Blank (MB) (MB) R4070009-2 05/12/24 22:08 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Chloroethane U 0.192 5.00 Chloromethane U 0.960 2.50 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 Ethylbenzene U 0.137 1.00 Tetrachloroethene U 0.300 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Vinyl chloride U 0.234 1.00 (S) Toluene-d8 103 80.0-120 (S) 4-Bromofluorobenzene 107 77.0-126 (S) 1,2-Dichloroethane-d4 104 70.0-130 Laboratory Control Sample (LCS) (LCS) R4070009-1 05/12/24 21:23 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Benzene 5.00 4.96 99.2 70.0-123 Chloroethane 5.00 5.12 102 47.0-150 Chloromethane 5.00 4.12 82.4 41.0-142 1,1-Dichloroethane 5.00 4.93 98.6 70.0-126 1,2-Dichloroethane 5.00 4.78 95.6 70.0-128 1,1-Dichloroethene 5.00 4.98 99.6 71.0-124 cis-1,2-Dichloroethene 5.00 4.77 95.4 73.0-120 trans-1,2-Dichloroethene 5.00 4.72 94.4 73.0-120 Ethylbenzene 5.00 4.52 90.4 79.0-123 Tetrachloroethene 5.00 4.94 98.8 72.0-132 1,1,1-Trichloroethane 5.00 4.76 95.2 73.0-124 1,1,2-Trichloroethane 5.00 4.98 99.6 80.0-120 Trichloroethene 5.00 5.37 107 78.0-124 Vinyl chloride 5.00 4.90 98.0 67.0-131 (S) Toluene-d8 105 80.0-120 (S) 4-Bromofluorobenzene 109 77.0-126 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 27 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 27 of 36 QUALITY CONTROL SUMMARYWG2285152 Volatile Organic Compounds (GC/MS) by Method 8260B L1734687-01,02,03,04,05,06,07,08,09,10 Laboratory Control Sample (LCS) (LCS) R4070009-1 05/12/24 21:23 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% (S) 1,2-Dichloroethane-d4 99.7 70.0-130 L1734687-03 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-03 05/13/24 05:08 • (MS) R4070009-3 05/13/24 08:11 • (MSD) R4070009-4 05/13/24 08:34 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Benzene 5.00 21.4 27.1 27.9 114 130 1 17.0-158 2.91 27 Chloroethane 5.00 U 5.81 6.36 116 127 1 10.0-160 9.04 30 Chloromethane 5.00 U 4.65 4.81 93.0 96.2 1 10.0-160 3.38 29 1,1-Dichloroethane 5.00 U 5.49 6.04 110 121 1 25.0-158 9.54 27 1,2-Dichloroethane 5.00 U 5.59 5.95 112 119 1 29.0-151 6.24 27 1,1-Dichloroethene 5.00 U 5.52 6.17 110 123 1 11.0-160 11.1 29 cis-1,2-Dichloroethene 5.00 U 5.45 6.05 109 121 1 10.0-160 10.4 27 trans-1,2-Dichloroethene 5.00 U 5.13 5.82 103 116 1 17.0-153 12.6 27 Ethylbenzene 5.00 26.9 33.0 33.2 122 126 1 30.0-155 0.604 27 Tetrachloroethene 5.00 U 5.48 6.10 110 122 1 10.0-160 10.7 27 1,1,1-Trichloroethane 5.00 U 5.66 6.56 113 131 1 23.0-160 14.7 28 1,1,2-Trichloroethane 5.00 U 5.59 5.62 112 112 1 35.0-147 0.535 27 Trichloroethene 5.00 U 5.52 5.99 110 120 1 10.0-160 8.17 25 Vinyl chloride 5.00 U 6.14 6.21 123 124 1 10.0-160 1.13 27 (S) Toluene-d8 102 99.9 80.0-120 (S) 4-Bromofluorobenzene 113 113 77.0-126 (S) 1,2-Dichloroethane-d4 99.9 99.5 70.0-130 L1734687-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-07 05/13/24 06:40 • (MS) R4070009-5 05/13/24 08:57 • (MSD) R4070009-6 05/13/24 09:20 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Benzene 5.00 U 6.00 6.06 120 121 1 17.0-158 0.995 27 Chloroethane 5.00 U 6.07 6.31 121 126 1 10.0-160 3.88 30 Chloromethane 5.00 U 4.83 4.80 96.6 96.0 1 10.0-160 0.623 29 1,1-Dichloroethane 5.00 0.527 6.53 6.58 120 121 1 25.0-158 0.763 27 1,2-Dichloroethane 5.00 U 5.63 5.63 113 113 1 29.0-151 0.000 27 1,1-Dichloroethene 5.00 U 5.68 5.90 114 118 1 11.0-160 3.80 29 cis-1,2-Dichloroethene 5.00 U 5.89 6.17 118 123 1 10.0-160 4.64 27 trans-1,2-Dichloroethene 5.00 U 5.52 5.78 110 116 1 17.0-153 4.60 27 Ethylbenzene 5.00 U 5.84 6.04 117 121 1 30.0-155 3.37 27 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 28 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 28 of 36 QUALITY CONTROL SUMMARYWG2285152 Volatile Organic Compounds (GC/MS) by Method 8260B L1734687-01,02,03,04,05,06,07,08,09,10 L1734687-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-07 05/13/24 06:40 • (MS) R4070009-5 05/13/24 08:57 • (MSD) R4070009-6 05/13/24 09:20 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Tetrachloroethene 5.00 U 6.08 6.30 122 126 1 10.0-160 3.55 27 1,1,1-Trichloroethane 5.00 U 5.88 6.22 118 124 1 23.0-160 5.62 28 1,1,2-Trichloroethane 5.00 U 5.46 5.65 109 113 1 35.0-147 3.42 27 Trichloroethene 5.00 U 5.51 5.89 110 118 1 10.0-160 6.67 25 Vinyl chloride 5.00 U 6.31 6.74 126 135 1 10.0-160 6.59 27 (S) Toluene-d8 102 102 80.0-120 (S) 4-Bromofluorobenzene 115 113 77.0-126 (S) 1,2-Dichloroethane-d4 98.3 98.8 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 29 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 29 of 36 QUALITY CONTROL SUMMARYWG2286976 Semi-Volatile Organic Compounds (GC) by Method 8015 L1734687-03,04 Method Blank (MB) (MB) R4071562-1 05/19/24 09:46 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l C10-C28 Diesel Range U 22.2 100 C28-C40 Oil Range U 11.8 100 (S) o-Terphenyl 103 52.0-156 Laboratory Control Sample (LCS) (LCS) R4071562-2 05/19/24 10:06 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% C10-C28 Diesel Range 1500 1070 71.3 50.0-150 (S) o-Terphenyl 132 52.0-156 L1734687-03 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-03 05/19/24 14:08 • (MS) R4071562-3 05/19/24 14:29 • (MSD) R4071562-4 05/19/24 14:49 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% C10-C28 Diesel Range 1430 1340 2660 2620 92.3 89.5 1 50.0-150 1.52 20 (S) o-Terphenyl 141 145 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 30 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 30 of 36 QUALITY CONTROL SUMMARYWG2284858 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM L1734687-03,04 Method Blank (MB) (MB) R4069901-2 05/15/24 00:18 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Anthracene U 0.0190 0.0500 Acenaphthene U 0.0190 0.0500 Acenaphthylene U 0.0171 0.0500 Benzo(a)anthracene U 0.0203 0.0500 Benzo(a)pyrene U 0.0184 0.0500 Benzo(b)fluoranthene U 0.0168 0.0500 Benzo(g,h,i)perylene U 0.0184 0.0500 Benzo(k)fluoranthene U 0.0202 0.0500 Chrysene U 0.0179 0.0500 Dibenz(a,h)anthracene U 0.0160 0.0500 Fluoranthene U 0.0270 0.100 Fluorene U 0.0169 0.0500 Indeno(1,2,3-cd)pyrene U 0.0158 0.0500 Naphthalene U 0.0917 0.250 Phenanthrene U 0.0180 0.0500 Pyrene U 0.0169 0.0500 1-Methylnaphthalene U 0.0687 0.250 2-Methylnaphthalene U 0.0674 0.250 2-Chloronaphthalene U 0.0682 0.250 (S) Nitrobenzene-d5 86.0 31.0-160 (S) 2-Fluorobiphenyl 113 48.0-148 (S) p-Terphenyl-d14 115 37.0-146 Laboratory Control Sample (LCS) (LCS) R4069901-1 05/14/24 23:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Anthracene 2.00 2.04 102 67.0-150 Acenaphthene 2.00 1.91 95.5 65.0-138 Acenaphthylene 2.00 1.93 96.5 66.0-140 Benzo(a)anthracene 2.00 1.93 96.5 61.0-140 Benzo(a)pyrene 2.00 1.66 83.0 60.0-143 Benzo(b)fluoranthene 2.00 1.62 81.0 58.0-141 Benzo(g,h,i)perylene 2.00 1.74 87.0 52.0-153 Benzo(k)fluoranthene 2.00 2.12 106 58.0-148 Chrysene 2.00 2.45 122 64.0-144 Dibenz(a,h)anthracene 2.00 2.00 100 52.0-155 Fluoranthene 2.00 2.03 102 69.0-153 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 31 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 31 of 36 QUALITY CONTROL SUMMARYWG2284858 Semi Volatile Organic Compounds (GC/MS) by Method 8270D-SIM L1734687-03,04 Laboratory Control Sample (LCS) (LCS) R4069901-1 05/14/24 23:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Fluorene 2.00 2.13 106 64.0-136 Indeno(1,2,3-cd)pyrene 2.00 1.61 80.5 54.0-153 Naphthalene 2.00 1.83 91.5 61.0-137 Phenanthrene 2.00 2.01 100 62.0-137 Pyrene 2.00 1.76 88.0 60.0-142 1-Methylnaphthalene 2.00 1.96 98.0 66.0-142 2-Methylnaphthalene 2.00 1.84 92.0 62.0-136 2-Chloronaphthalene 2.00 2.06 103 64.0-140 (S) Nitrobenzene-d5 88.5 31.0-160 (S) 2-Fluorobiphenyl 115 48.0-148 (S) p-Terphenyl-d14 113 37.0-146 L1734687-03 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734687-03 05/15/24 06:30 • (MS) R4069901-3 05/15/24 06:49 • (MSD) R4069901-4 05/15/24 07:09 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Anthracene 1.90 12.9 13.2 15.5 15.8 137 1 56.0-156 V 16.0 20 Acenaphthene 1.90 104 97.2 107 0.000 158 1 44.0-153 E V E V 9.60 20 Acenaphthylene 1.90 3.16 4.82 5.14 87.4 104 1 53.0-150 6.43 20 Benzo(a)anthracene 1.90 0.345 2.13 2.22 93.9 98.7 1 47.0-151 4.14 20 Benzo(a)pyrene 1.90 0.0456 1.69 1.64 86.5 83.9 1 45.0-146 3.00 20 Benzo(b)fluoranthene 1.90 0.0521 1.77 1.71 90.4 87.3 1 43.0-142 3.45 20 Benzo(g,h,i)perylene 1.90 U 1.72 1.70 90.5 89.5 1 40.0-147 1.17 20 Benzo(k)fluoranthene 1.90 U 1.92 1.95 101 103 1 43.0-148 1.55 21 Chrysene 1.90 0.360 2.45 2.47 110 111 1 50.0-148 0.813 20 Dibenz(a,h)anthracene 1.90 U 1.88 1.83 98.9 96.3 1 37.0-151 2.70 20 Fluoranthene 1.90 5.12 6.57 7.33 76.3 116 1 56.0-157 10.9 20 Fluorene 1.90 40.0 37.3 41.3 0.000 68.4 1 48.0-148 V 10.2 20 Indeno(1,2,3-cd)pyrene 1.90 U 1.48 1.41 77.9 74.2 1 41.0-148 4.84 20 Naphthalene 1.90 7.61 8.58 9.94 51.1 123 1 10.0-160 14.7 20 Phenanthrene 1.90 31.4 28.2 34.6 0.000 168 1 47.0-147 V J3 V 20.4 20 Pyrene 1.90 8.04 8.91 9.84 45.8 94.7 1 51.0-148 V 9.92 20 1-Methylnaphthalene 1.90 122 108 127 0.000 263 1 21.0-160 E V E V 16.2 20 2-Methylnaphthalene 1.90 0.528 2.32 2.43 94.3 100 1 31.0-160 4.63 20 2-Chloronaphthalene 1.90 U 2.13 2.19 112 115 1 52.0-148 2.78 20 (S) Nitrobenzene-d5 87.9 90.5 31.0-160 (S) 2-Fluorobiphenyl 127 127 48.0-148 (S) p-Terphenyl-d14 114 117 37.0-146 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 32 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 32 of 36 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. V The sample concentration is too high to evaluate accurate spike recoveries. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 33 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 33 of 36 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 01:03 34 of 36 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1734687 05/21/24 10:56 34 of 36 ANALYTICAL REPORT May 21, 2024 UPRR - Jacobs Sample Delivery Group:L1735258 Samples Received:05/10/2024 Project Number:1990 Description:Ogden UT-SP Yard Site:2024 BIENNIAL SAMPLING EVENT Report To:Terence Mares 6440 S. Milrock Dr. Suite 300 Holladay, UT 84121 Entire Report Reviewed By: May 21, 2024 [Preliminary Report] Brittnie L Boyd Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 1 of 33 May 21, 2024 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 1 of 33 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 34-MW8 L1735258-01 6 30-MW6D L1735258-02 7 FD-03 L1735258-03 8 30-MW1 L1735258-04 9 27B-MW2D L1735258-05 10 26-STMW1 L1735258-06 11 22A-MW3 L1735258-07 12 22A-MW6 L1735258-08 13 TB03-05092024 L1735258-09 14 Qc: Quality Control Summary 15 Wet Chemistry by Method 2320 B-2011 15 Wet Chemistry by Method 353.2 18 Wet Chemistry by Method 9056A 19 Volatile Organic Compounds (GC) by Method RSK175 23 Volatile Organic Compounds (GC/MS) by Method 8260B 26 Gl: Glossary of Terms 31 Al: Accreditations & Locations 32 Sc: Sample Chain of Custody 33 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 2 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 2 of 33 SAMPLE SUMMARY Collected by Collected date/time Received date/time 34-MW8 L1735258-01 GW Alex Lennon (Jacobs) 05/09/24 16:02 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285858 1 05/14/24 10:47 05/14/24 10:47 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 1 05/16/24 16:56 05/16/24 16:56 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286558 1 05/17/24 12:33 05/17/24 12:33 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286558 5 05/17/24 12:50 05/17/24 12:50 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:13 05/15/24 11:13 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 07:48 05/15/24 07:48 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time 30-MW6D L1735258-02 GW Alex Lennon (Jacobs) 05/09/24 14:00 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285858 1 05/14/24 10:53 05/14/24 10:53 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 1 05/16/24 16:57 05/16/24 16:57 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286558 1 05/17/24 13:07 05/17/24 13:07 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286558 5 05/17/24 13:23 05/17/24 13:23 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:19 05/15/24 11:19 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 08:07 05/15/24 08:07 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time FD-03 L1735258-03 GW Alex Lennon (Jacobs) 05/09/24 14:10 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285858 1 05/14/24 11:00 05/14/24 11:00 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 1 05/16/24 17:02 05/16/24 17:02 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286558 1 05/17/24 13:40 05/17/24 13:40 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286558 5 05/17/24 13:57 05/17/24 13:57 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:23 05/15/24 11:23 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 08:26 05/15/24 08:26 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time 30-MW1 L1735258-04 GW Alex Lennon (Jacobs) 05/09/24 13:10 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285858 1 05/14/24 11:05 05/14/24 11:05 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 1 05/16/24 17:06 05/16/24 17:06 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286580 10 05/16/24 00:53 05/16/24 00:53 ASM Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:28 05/15/24 11:28 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 08:46 05/15/24 08:46 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time 27B-MW2D L1735258-05 GW Alex Lennon (Jacobs) 05/09/24 12:10 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2286337 1 05/15/24 10:50 05/15/24 10:50 KA Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 1 05/16/24 17:07 05/16/24 17:07 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286580 10 05/16/24 01:28 05/16/24 01:28 ASM Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:31 05/15/24 11:31 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 09:05 05/15/24 09:05 ACG Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 3 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 3 of 33 SAMPLE SUMMARY Collected by Collected date/time Received date/time 26-STMW1 L1735258-06 GW Alex Lennon (Jacobs) 05/09/24 11:25 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285858 1 05/14/24 11:11 05/14/24 11:11 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 1 05/16/24 17:09 05/16/24 17:09 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286580 10 05/16/24 02:04 05/16/24 02:04 ASM Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:37 05/15/24 11:37 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 09:27 05/15/24 09:27 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time 22A-MW3 L1735258-07 GW Alex Lennon (Jacobs) 05/09/24 10:00 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2286337 1 05/15/24 10:54 05/15/24 10:54 KA Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 5 05/16/24 17:10 05/16/24 17:10 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286580 10 05/16/24 02:40 05/16/24 02:40 ASM Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2285463 1 05/15/24 11:41 05/15/24 11:41 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2286398 1 05/15/24 09:46 05/15/24 09:46 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time 22A-MW6 L1735258-08 GW Alex Lennon (Jacobs) 05/09/24 09:30 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2285858 1 05/14/24 11:16 05/14/24 11:16 BJM Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2287089 5 05/16/24 17:11 05/16/24 17:11 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286580 10 05/16/24 03:51 05/16/24 03:51 ASM Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2286157 1 05/15/24 13:49 05/15/24 13:49 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2288663 5 05/18/24 05:00 05/18/24 05:00 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2289731 5 05/20/24 12:34 05/20/24 12:34 JBE Mt. Juliet, TN Collected by Collected date/time Received date/time TB03-05092024 L1735258-09 GW Alex Lennon (Jacobs) 05/09/24 00:00 05/10/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2288663 1 05/17/24 22:10 05/17/24 22:10 DYW Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 4 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 4 of 33 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Brittnie L Boyd Project Manager Sample Delivery Group (SDG) Narrative Analyzed from headspace vial. Lab Sample ID Project Sample ID Method L1735258-09 TB03-05092024 8260B 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 5 of 33 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 5 of 33 SAMPLE RESULTS - 01 L1735258 34-MW8 Collected date/time: 05/09/24 16:02 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 594000 8450 20000 1 05/14/2024 10:47 WG2285858 Sample Narrative: L1735258-01 WG2285858: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite 1180 50.0 100 1 05/16/2024 16:56 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 397000 1900 5000 5 05/17/2024 12:50 WG2286558 Sulfate 31800 594 5000 1 05/17/2024 12:33 WG2286558 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 358 2.91 10.0 1 05/15/2024 11:13 WG2285463 Ethane U 4.07 13.0 1 05/15/2024 11:13 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:13 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/15/2024 07:48 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 07:48 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 07:48 WG2286398 1,1-Dichloroethane 0.350 J 0.100 1.00 1 05/15/2024 07:48 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 07:48 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 07:48 WG2286398 cis-1,2-Dichloroethene U 0.126 1.00 1 05/15/2024 07:48 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 07:48 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 07:48 WG2286398 Tetrachloroethene U 0.300 1.00 1 05/15/2024 07:48 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 07:48 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 07:48 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 07:48 WG2286398 Vinyl chloride U 0.234 1.00 1 05/15/2024 07:48 WG2286398 (S) Toluene-d8 101 80.0-120 05/15/2024 07:48 WG2286398 (S) 4-Bromofluorobenzene 96.5 77.0-126 05/15/2024 07:48 WG2286398 (S) 1,2-Dichloroethane-d4 102 70.0-130 05/15/2024 07:48 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 6 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 6 of 33 SAMPLE RESULTS - 02 L1735258 30-MW6D Collected date/time: 05/09/24 14:00 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 483000 8450 20000 1 05/14/2024 10:53 WG2285858 Sample Narrative: L1735258-02 WG2285858: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 16:57 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 200000 1900 5000 5 05/17/2024 13:23 WG2286558 Sulfate 68600 594 5000 1 05/17/2024 13:07 WG2286558 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 2060 2.91 10.0 1 05/15/2024 11:19 WG2285463 Ethane 7.29 J 4.07 13.0 1 05/15/2024 11:19 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:19 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 0.219 J 0.0941 1.00 1 05/15/2024 08:07 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 08:07 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 08:07 WG2286398 1,1-Dichloroethane U 0.100 1.00 1 05/15/2024 08:07 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 08:07 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 08:07 WG2286398 cis-1,2-Dichloroethene 0.791 J 0.126 1.00 1 05/15/2024 08:07 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 08:07 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 08:07 WG2286398 Tetrachloroethene U 0.300 1.00 1 05/15/2024 08:07 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 08:07 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 08:07 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 08:07 WG2286398 Vinyl chloride 9.88 0.234 1.00 1 05/15/2024 08:07 WG2286398 (S) Toluene-d8 101 80.0-120 05/15/2024 08:07 WG2286398 (S) 4-Bromofluorobenzene 97.5 77.0-126 05/15/2024 08:07 WG2286398 (S) 1,2-Dichloroethane-d4 101 70.0-130 05/15/2024 08:07 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 7 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 7 of 33 SAMPLE RESULTS - 03 L1735258 FD-03 Collected date/time: 05/09/24 14:10 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 480000 8450 20000 1 05/14/2024 11:00 WG2285858 Sample Narrative: L1735258-03 WG2285858: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 17:02 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 208000 1900 5000 5 05/17/2024 13:57 WG2286558 Sulfate 69000 594 5000 1 05/17/2024 13:40 WG2286558 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 1920 2.91 10.0 1 05/15/2024 11:23 WG2285463 Ethane 5.67 J 4.07 13.0 1 05/15/2024 11:23 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:23 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 0.209 J 0.0941 1.00 1 05/15/2024 08:26 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 08:26 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 08:26 WG2286398 1,1-Dichloroethane U 0.100 1.00 1 05/15/2024 08:26 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 08:26 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 08:26 WG2286398 cis-1,2-Dichloroethene 0.640 J 0.126 1.00 1 05/15/2024 08:26 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 08:26 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 08:26 WG2286398 Tetrachloroethene U 0.300 1.00 1 05/15/2024 08:26 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 08:26 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 08:26 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 08:26 WG2286398 Vinyl chloride 9.36 0.234 1.00 1 05/15/2024 08:26 WG2286398 (S) Toluene-d8 99.8 80.0-120 05/15/2024 08:26 WG2286398 (S) 4-Bromofluorobenzene 98.8 77.0-126 05/15/2024 08:26 WG2286398 (S) 1,2-Dichloroethane-d4 102 70.0-130 05/15/2024 08:26 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 8 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 8 of 33 SAMPLE RESULTS - 04 L1735258 30-MW1 Collected date/time: 05/09/24 13:10 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 425000 8450 20000 1 05/14/2024 11:05 WG2285858 Sample Narrative: L1735258-04 WG2285858: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite 2660 50.0 100 1 05/16/2024 17:06 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 373000 3790 10000 10 05/16/2024 00:53 WG2286580 Sulfate 243000 5940 50000 10 05/16/2024 00:53 WG2286580 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 05/15/2024 11:28 WG2285463 Ethane U 4.07 13.0 1 05/15/2024 11:28 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:28 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/15/2024 08:46 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 08:46 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 08:46 WG2286398 1,1-Dichloroethane U 0.100 1.00 1 05/15/2024 08:46 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 08:46 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 08:46 WG2286398 cis-1,2-Dichloroethene U 0.126 1.00 1 05/15/2024 08:46 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 08:46 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 08:46 WG2286398 Tetrachloroethene U 0.300 1.00 1 05/15/2024 08:46 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 08:46 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 08:46 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 08:46 WG2286398 Vinyl chloride 0.251 J 0.234 1.00 1 05/15/2024 08:46 WG2286398 (S) Toluene-d8 101 80.0-120 05/15/2024 08:46 WG2286398 (S) 4-Bromofluorobenzene 98.2 77.0-126 05/15/2024 08:46 WG2286398 (S) 1,2-Dichloroethane-d4 102 70.0-130 05/15/2024 08:46 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 9 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 9 of 33 SAMPLE RESULTS - 05 L1735258 27B-MW2D Collected date/time: 05/09/24 12:10 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 593000 8450 20000 1 05/15/2024 10:50 WG2286337 Sample Narrative: L1735258-05 WG2286337: Endpoint pH 4.5 headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 17:07 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 151000 3790 10000 10 05/16/2024 01:28 WG2286580 Sulfate 9880 J 5940 50000 10 05/16/2024 01:28 WG2286580 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 2210 2.91 10.0 1 05/15/2024 11:31 WG2285463 Ethane U 4.07 13.0 1 05/15/2024 11:31 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:31 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/15/2024 09:05 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 09:05 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 09:05 WG2286398 1,1-Dichloroethane U 0.100 1.00 1 05/15/2024 09:05 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 09:05 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 09:05 WG2286398 cis-1,2-Dichloroethene 0.741 J 0.126 1.00 1 05/15/2024 09:05 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 09:05 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 09:05 WG2286398 Tetrachloroethene U 0.300 1.00 1 05/15/2024 09:05 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 09:05 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 09:05 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 09:05 WG2286398 Vinyl chloride 3.24 0.234 1.00 1 05/15/2024 09:05 WG2286398 (S) Toluene-d8 101 80.0-120 05/15/2024 09:05 WG2286398 (S) 4-Bromofluorobenzene 98.4 77.0-126 05/15/2024 09:05 WG2286398 (S) 1,2-Dichloroethane-d4 103 70.0-130 05/15/2024 09:05 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 10 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 10 of 33 SAMPLE RESULTS - 06 L1735258 26-STMW1 Collected date/time: 05/09/24 11:25 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 472000 8450 20000 1 05/14/2024 11:11 WG2285858 Sample Narrative: L1735258-06 WG2285858: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/16/2024 17:09 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 237000 3790 10000 10 05/16/2024 02:04 WG2286580 Sulfate 195000 5940 50000 10 05/16/2024 02:04 WG2286580 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 79.8 2.91 10.0 1 05/15/2024 11:37 WG2285463 Ethane U 4.07 13.0 1 05/15/2024 11:37 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:37 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/15/2024 09:27 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 09:27 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 09:27 WG2286398 1,1-Dichloroethane U 0.100 1.00 1 05/15/2024 09:27 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 09:27 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 09:27 WG2286398 cis-1,2-Dichloroethene U 0.126 1.00 1 05/15/2024 09:27 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 09:27 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 09:27 WG2286398 Tetrachloroethene U 0.300 1.00 1 05/15/2024 09:27 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 09:27 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 09:27 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 09:27 WG2286398 Vinyl chloride U 0.234 1.00 1 05/15/2024 09:27 WG2286398 (S) Toluene-d8 104 80.0-120 05/15/2024 09:27 WG2286398 (S) 4-Bromofluorobenzene 97.5 77.0-126 05/15/2024 09:27 WG2286398 (S) 1,2-Dichloroethane-d4 99.3 70.0-130 05/15/2024 09:27 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 11 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 11 of 33 SAMPLE RESULTS - 07 L1735258 22A-MW3 Collected date/time: 05/09/24 10:00 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 605000 8450 20000 1 05/15/2024 10:54 WG2286337 Sample Narrative: L1735258-07 WG2286337: Endpoint pH 4.5 headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite 18900 250 500 5 05/16/2024 17:10 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 24400 3790 10000 10 05/16/2024 02:40 WG2286580 Sulfate 82400 5940 50000 10 05/16/2024 02:40 WG2286580 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 05/15/2024 11:41 WG2285463 Ethane U 4.07 13.0 1 05/15/2024 11:41 WG2285463 Ethene U 4.26 13.0 1 05/15/2024 11:41 WG2285463 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/15/2024 09:46 WG2286398 Chloroethane U 0.192 5.00 1 05/15/2024 09:46 WG2286398 Chloromethane U 0.960 2.50 1 05/15/2024 09:46 WG2286398 1,1-Dichloroethane U 0.100 1.00 1 05/15/2024 09:46 WG2286398 1,2-Dichloroethane U 0.0819 1.00 1 05/15/2024 09:46 WG2286398 1,1-Dichloroethene U 0.188 1.00 1 05/15/2024 09:46 WG2286398 cis-1,2-Dichloroethene U 0.126 1.00 1 05/15/2024 09:46 WG2286398 trans-1,2-Dichloroethene U 0.149 1.00 1 05/15/2024 09:46 WG2286398 Ethylbenzene U 0.137 1.00 1 05/15/2024 09:46 WG2286398 Tetrachloroethene 0.406 J 0.300 1.00 1 05/15/2024 09:46 WG2286398 1,1,1-Trichloroethane U 0.149 1.00 1 05/15/2024 09:46 WG2286398 1,1,2-Trichloroethane U 0.158 1.00 1 05/15/2024 09:46 WG2286398 Trichloroethene U 0.190 1.00 1 05/15/2024 09:46 WG2286398 Vinyl chloride U 0.234 1.00 1 05/15/2024 09:46 WG2286398 (S) Toluene-d8 102 80.0-120 05/15/2024 09:46 WG2286398 (S) 4-Bromofluorobenzene 97.4 77.0-126 05/15/2024 09:46 WG2286398 (S) 1,2-Dichloroethane-d4 100 70.0-130 05/15/2024 09:46 WG2286398 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 12 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 12 of 33 SAMPLE RESULTS - 08 L1735258 22A-MW6 Collected date/time: 05/09/24 09:30 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 399000 8450 20000 1 05/14/2024 11:16 WG2285858 Sample Narrative: L1735258-08 WG2285858: Endpoint pH 4.5 Headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite 13300 250 500 5 05/16/2024 17:11 WG2287089 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 92800 3790 10000 10 05/16/2024 03:51 WG2286580 Sulfate 47700 J 5940 50000 10 05/16/2024 03:51 WG2286580 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 05/15/2024 13:49 WG2286157 Ethane U 4.07 13.0 1 05/15/2024 13:49 WG2286157 Ethene U 4.26 13.0 1 05/15/2024 13:49 WG2286157 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.471 5.00 5 05/18/2024 05:00 WG2288663 Chloroethane U 0.960 25.0 5 05/18/2024 05:00 WG2288663 Chloromethane U 4.80 12.5 5 05/18/2024 05:00 WG2288663 1,1-Dichloroethane 8.27 0.500 5.00 5 05/18/2024 05:00 WG2288663 1,2-Dichloroethane U 0.409 5.00 5 05/18/2024 05:00 WG2288663 1,1-Dichloroethene U 0.940 5.00 5 05/18/2024 05:00 WG2288663 cis-1,2-Dichloroethene U 0.630 5.00 5 05/20/2024 12:34 WG2289731 trans-1,2-Dichloroethene U 0.745 5.00 5 05/18/2024 05:00 WG2288663 Ethylbenzene U 0.685 5.00 5 05/18/2024 05:00 WG2288663 Tetrachloroethene U 1.50 5.00 5 05/18/2024 05:00 WG2288663 1,1,1-Trichloroethane 1.29 J 0.745 5.00 5 05/20/2024 12:34 WG2289731 1,1,2-Trichloroethane U 0.790 5.00 5 05/18/2024 05:00 WG2288663 Trichloroethene U 0.950 5.00 5 05/18/2024 05:00 WG2288663 Vinyl chloride U 1.17 5.00 5 05/18/2024 05:00 WG2288663 (S) Toluene-d8 108 80.0-120 05/18/2024 05:00 WG2288663 (S) Toluene-d8 102 80.0-120 05/20/2024 12:34 WG2289731 (S) 4-Bromofluorobenzene 106 77.0-126 05/18/2024 05:00 WG2288663 (S) 4-Bromofluorobenzene 101 77.0-126 05/20/2024 12:34 WG2289731 (S) 1,2-Dichloroethane-d4 102 70.0-130 05/18/2024 05:00 WG2288663 (S) 1,2-Dichloroethane-d4 117 70.0-130 05/20/2024 12:34 WG2289731 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 13 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 13 of 33 SAMPLE RESULTS - 09 L1735258 TB03-05092024 Collected date/time: 05/09/24 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/17/2024 22:10 WG2288663 Chloroethane U 0.192 5.00 1 05/17/2024 22:10 WG2288663 Chloromethane U 0.960 2.50 1 05/17/2024 22:10 WG2288663 1,1-Dichloroethane U 0.100 1.00 1 05/17/2024 22:10 WG2288663 1,2-Dichloroethane U 0.0819 1.00 1 05/17/2024 22:10 WG2288663 1,1-Dichloroethene U 0.188 1.00 1 05/17/2024 22:10 WG2288663 cis-1,2-Dichloroethene U 0.126 1.00 1 05/17/2024 22:10 WG2288663 trans-1,2-Dichloroethene U 0.149 1.00 1 05/17/2024 22:10 WG2288663 Ethylbenzene U 0.137 1.00 1 05/17/2024 22:10 WG2288663 Tetrachloroethene U 0.300 1.00 1 05/17/2024 22:10 WG2288663 1,1,1-Trichloroethane U 0.149 1.00 1 05/17/2024 22:10 WG2288663 1,1,2-Trichloroethane U 0.158 1.00 1 05/17/2024 22:10 WG2288663 Trichloroethene U 0.190 1.00 1 05/17/2024 22:10 WG2288663 Vinyl chloride U 0.234 1.00 1 05/17/2024 22:10 WG2288663 (S) Toluene-d8 108 80.0-120 05/17/2024 22:10 WG2288663 (S) 4-Bromofluorobenzene 101 77.0-126 05/17/2024 22:10 WG2288663 (S) 1,2-Dichloroethane-d4 102 70.0-130 05/17/2024 22:10 WG2288663 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 14 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 14 of 33 QUALITY CONTROL SUMMARYWG2285858 Wet Chemistry by Method 2320 B-2011 L1735258-01,02,03,04,06,08 Method Blank (MB) (MB) R4069568-2 05/14/24 09:34 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1735063-11 Original Sample (OS) • Duplicate (DUP) (OS) L1735063-11 05/14/24 09:47 • (DUP) R4069568-3 05/14/24 09:52 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity U U 1 0.000 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 L1735446-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735446-01 05/14/24 11:41 • (DUP) R4069568-4 05/14/24 11:45 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 90900 91100 1 0.245 20 Sample Narrative: OS: Endpoint pH 4.5 Headspace DUP: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4069568-1 05/14/24 09:20 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 106000 106 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 15 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 15 of 33 QUALITY CONTROL SUMMARYWG2286337 Wet Chemistry by Method 2320 B-2011 L1735258-05,07 Method Blank (MB) (MB) R4069888-2 05/15/24 09:20 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 Method Blank (MB) (MB) R4069888-5 05/15/24 09:42 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1734720-01 Original Sample (OS) • Duplicate (DUP) (OS) L1734720-01 05/15/24 10:00 • (DUP) R4069888-7 05/15/24 10:05 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 124000 123000 1 0.322 20 Sample Narrative: OS: Endpoint pH 4.5 headspace DUP: Endpoint pH 4.5 L1735448-09 Original Sample (OS) • Duplicate (DUP) (OS) L1735448-09 05/15/24 11:40 • (DUP) R4069888-9 05/15/24 11:43 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 13100 U 1 200 P1 20 Sample Narrative: OS: Endpoint pH 4.5 headspace DUP: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 16 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 16 of 33 QUALITY CONTROL SUMMARYWG2286337 Wet Chemistry by Method 2320 B-2011 L1735258-05,07 Laboratory Control Sample (LCS) (LCS) R4069888-1 05/15/24 09:11 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 110000 110 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4069888-4 05/15/24 09:36 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 98900 98.9 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 17 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 17 of 33 QUALITY CONTROL SUMMARYWG2287089 Wet Chemistry by Method 353.2 L1735258-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R4070690-1 05/16/24 16:30 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate-Nitrite U 50.0 100 L1735143-04 Original Sample (OS) • Duplicate (DUP) (OS) L1735143-04 05/16/24 16:47 • (DUP) R4070690-3 05/16/24 16:48 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate-Nitrite 622 616 1 0.969 20 L1735258-03 Original Sample (OS) • Duplicate (DUP) (OS) L1735258-03 05/16/24 17:02 • (DUP) R4070690-6 05/16/24 17:04 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate-Nitrite U U 1 0.000 20 Laboratory Control Sample (LCS) (LCS) R4070690-2 05/16/24 16:32 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate-Nitrite 2500 2560 102 90.0-110 L1735143-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1735143-04 05/16/24 16:47 • (MS) R4070690-4 05/16/24 16:50 • (MSD) R4070690-5 05/16/24 16:51 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate-Nitrite 2500 622 3170 3190 102 103 1 90.0-110 0.629 20 L1735258-03 Original Sample (OS) • Matrix Spike (MS) (OS) L1735258-03 05/16/24 17:02 • (MS) R4070690-7 05/16/24 17:05 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Nitrate-Nitrite 2500 U 2560 102 1 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 18 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 18 of 33 QUALITY CONTROL SUMMARYWG2286558 Wet Chemistry by Method 9056A L1735258-01,02,03 Method Blank (MB) (MB) R4070780-1 05/17/24 02:54 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Chloride U 379 1000 Sulfate U 594 5000 L1731873-01 Original Sample (OS) • Duplicate (DUP) (OS) L1731873-01 05/17/24 04:43 • (DUP) R4070780-3 05/17/24 04:59 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 3330 3330 1 0.0180 15 Sulfate 553000 555000 1 0.303 E 15 L1735250-02 Original Sample (OS) • Duplicate (DUP) (OS) L1735250-02 05/17/24 10:18 • (DUP) R4070780-6 05/17/24 10:35 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 15700 15700 1 0.0249 15 Sulfate 57000 57000 1 0.00544 15 Laboratory Control Sample (LCS) (LCS) R4070780-2 05/17/24 03:11 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Chloride 40000 39300 98.1 80.0-120 Sulfate 40000 39300 98.3 80.0-120 L1731873-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1731873-01 05/17/24 04:43 • (MS) R4070780-4 05/17/24 05:16 • (MSD) R4070780-5 05/17/24 05:33 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloride 40000 3330 42000 38700 96.6 88.5 1 80.0-120 8.05 15 Sulfate 40000 553000 510000 485000 0.000 0.000 1 80.0-120 E V E V 5.16 15 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 19 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 19 of 33 QUALITY CONTROL SUMMARYWG2286558 Wet Chemistry by Method 9056A L1735258-01,02,03 L1735250-02 Original Sample (OS) • Matrix Spike (MS) (OS) L1735250-02 05/17/24 10:18 • (MS) R4070780-7 05/17/24 10:52 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Chloride 40000 15700 53400 94.3 1 80.0-120 Sulfate 40000 57000 91200 85.6 1 80.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 20 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 20 of 33 QUALITY CONTROL SUMMARYWG2286580 Wet Chemistry by Method 9056A L1735258-04,05,06,07,08 Method Blank (MB) (MB) R4071416-1 05/15/24 13:52 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Chloride U 379 1000 Sulfate U 594 5000 L1735144-05 Original Sample (OS) • Duplicate (DUP) (OS) L1735144-05 05/15/24 21:16 • (DUP) R4071416-3 05/15/24 21:34 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 8890 8840 1 0.596 15 Sulfate 221000 221000 1 0.165 E 15 L1735446-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735446-01 05/16/24 05:21 • (DUP) R4071416-5 05/16/24 05:39 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 2950 3070 1 3.95 15 Sulfate 11600 11500 1 0.126 15 Laboratory Control Sample (LCS) (LCS) R4071416-2 05/15/24 14:10 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Chloride 40000 40200 100 80.0-120 Sulfate 40000 42500 106 80.0-120 L1735144-05 Original Sample (OS) • Matrix Spike (MS) (OS) L1735144-05 05/15/24 21:16 • (MS) R4071416-4 05/15/24 21:52 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Chloride 40000 8890 47100 95.4 1 80.0-120 Sulfate 40000 221000 218000 0.000 1 80.0-120 E V 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 21 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 21 of 33 QUALITY CONTROL SUMMARYWG2286580 Wet Chemistry by Method 9056A L1735258-04,05,06,07,08 L1735446-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1735446-01 05/16/24 05:21 • (MS) R4071416-6 05/16/24 05:57 • (MSD) R4071416-7 05/16/24 06:15 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloride 40000 2950 42000 42100 97.7 98.0 1 80.0-120 0.313 15 Sulfate 40000 11600 51500 51700 100 100 1 80.0-120 0.233 15 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 22 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 22 of 33 QUALITY CONTROL SUMMARYWG2285463 Volatile Organic Compounds (GC) by Method RSK175 L1735258-01,02,03,04,05,06,07 Method Blank (MB) (MB) R4069871-2 05/15/24 08:59 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 Ethane U 4.07 13.0 Ethene U 4.26 13.0 L1735181-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735181-01 05/15/24 09:26 • (DUP) R4069871-3 05/15/24 10:49 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 L1735258-04 Original Sample (OS) • Duplicate (DUP) (OS) L1735258-04 05/15/24 11:28 • (DUP) R4069871-4 05/15/24 11:43 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4069871-1 05/15/24 08:56 • (LCSD) R4069871-7 05/15/24 11:52 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 66.4 68.0 97.9 100 85.0-115 2.38 20 Ethane 129 116 114 89.9 88.4 85.0-115 1.74 20 Ethene 127 115 114 90.6 89.8 85.0-115 0.873 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 23 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 23 of 33 QUALITY CONTROL SUMMARYWG2285463 Volatile Organic Compounds (GC) by Method RSK175 L1735258-01,02,03,04,05,06,07 L1735181-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1735181-06 05/15/24 10:46 • (MS) R4069871-5 05/15/24 11:47 • (MSD) R4069871-6 05/15/24 11:49 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Methane 67.8 U 67.4 67.8 99.4 100 1 50.0-150 0.592 20 Ethane 129 U 115 116 89.1 89.9 1 50.0-150 0.866 20 Ethene 127 U 115 115 90.6 90.6 1 50.0-150 0.000 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 24 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 24 of 33 QUALITY CONTROL SUMMARYWG2286157 Volatile Organic Compounds (GC) by Method RSK175 L1735258-08 Method Blank (MB) (MB) R4070024-2 05/15/24 13:46 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 Ethane U 4.07 13.0 Ethene U 4.26 13.0 L1735442-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735442-01 05/15/24 13:52 • (DUP) R4070024-3 05/15/24 14:36 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 L1735442-11 Original Sample (OS) • Duplicate (DUP) (OS) L1735442-11 05/15/24 14:40 • (DUP) R4070024-4 05/15/24 15:41 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4070024-1 05/15/24 13:43 • (LCSD) R4070024-5 05/15/24 15:44 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 62.4 64.5 92.0 95.1 85.0-115 3.31 20 Ethane 129 120 120 93.0 93.0 85.0-115 0.000 20 Ethene 127 120 120 94.5 94.5 85.0-115 0.000 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 25 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 25 of 33 QUALITY CONTROL SUMMARYWG2286398 Volatile Organic Compounds (GC/MS) by Method 8260B L1735258-01,02,03,04,05,06,07 Method Blank (MB) (MB) R4070947-2 05/15/24 03:38 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Chloroethane U 0.192 5.00 Chloromethane U 0.960 2.50 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 Ethylbenzene U 0.137 1.00 Tetrachloroethene U 0.300 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Vinyl chloride U 0.234 1.00 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 99.6 77.0-126 (S) 1,2-Dichloroethane-d4 100 70.0-130 Laboratory Control Sample (LCS) (LCS) R4070947-1 05/15/24 02:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Benzene 5.00 5.01 100 70.0-123 Chloroethane 5.00 5.13 103 47.0-150 Chloromethane 5.00 5.28 106 41.0-142 1,1-Dichloroethane 5.00 4.87 97.4 70.0-126 1,2-Dichloroethane 5.00 5.04 101 70.0-128 1,1-Dichloroethene 5.00 4.75 95.0 71.0-124 cis-1,2-Dichloroethene 5.00 4.80 96.0 73.0-120 trans-1,2-Dichloroethene 5.00 4.62 92.4 73.0-120 Ethylbenzene 5.00 4.49 89.8 79.0-123 Tetrachloroethene 5.00 4.60 92.0 72.0-132 1,1,1-Trichloroethane 5.00 4.52 90.4 73.0-124 1,1,2-Trichloroethane 5.00 4.56 91.2 80.0-120 Trichloroethene 5.00 4.68 93.6 78.0-124 Vinyl chloride 5.00 5.01 100 67.0-131 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 99.5 77.0-126 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 26 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 26 of 33 QUALITY CONTROL SUMMARYWG2286398 Volatile Organic Compounds (GC/MS) by Method 8260B L1735258-01,02,03,04,05,06,07 Laboratory Control Sample (LCS) (LCS) R4070947-1 05/15/24 02:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% (S) 1,2-Dichloroethane-d4 102 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 27 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 27 of 33 QUALITY CONTROL SUMMARYWG2288663 Volatile Organic Compounds (GC/MS) by Method 8260B L1735258-08,09 Method Blank (MB) (MB) R4071336-3 05/17/24 20:31 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Chloroethane U 0.192 5.00 Chloromethane U 0.960 2.50 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 Ethylbenzene U 0.137 1.00 Tetrachloroethene U 0.300 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Vinyl chloride U 0.234 1.00 (S) Toluene-d8 107 80.0-120 (S) 4-Bromofluorobenzene 102 77.0-126 (S) 1,2-Dichloroethane-d4 101 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4071336-1 05/17/24 18:48 • (LCSD) R4071336-2 05/17/24 19:09 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 4.90 4.80 98.0 96.0 70.0-123 2.06 20 Chloroethane 5.00 4.81 4.66 96.2 93.2 47.0-150 J J 3.17 20 Chloromethane 5.00 4.74 4.61 94.8 92.2 41.0-142 2.78 20 1,1-Dichloroethane 5.00 4.87 4.78 97.4 95.6 70.0-126 1.87 20 1,2-Dichloroethane 5.00 4.86 4.68 97.2 93.6 70.0-128 3.77 20 1,1-Dichloroethene 5.00 4.50 4.60 90.0 92.0 71.0-124 2.20 20 cis-1,2-Dichloroethene 5.00 4.62 4.62 92.4 92.4 73.0-120 0.000 20 trans-1,2-Dichloroethene 5.00 4.90 4.78 98.0 95.6 73.0-120 2.48 20 Ethylbenzene 5.00 5.00 4.80 100 96.0 79.0-123 4.08 20 Tetrachloroethene 5.00 4.91 4.84 98.2 96.8 72.0-132 1.44 20 1,1,1-Trichloroethane 5.00 4.58 4.53 91.6 90.6 73.0-124 1.10 20 1,1,2-Trichloroethane 5.00 4.56 4.70 91.2 94.0 80.0-120 3.02 20 Trichloroethene 5.00 5.25 5.09 105 102 78.0-124 3.09 20 Vinyl chloride 5.00 4.87 4.74 97.4 94.8 67.0-131 2.71 20 (S) Toluene-d8 104 104 80.0-120 (S) 4-Bromofluorobenzene 102 101 77.0-126 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 28 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 28 of 33 QUALITY CONTROL SUMMARYWG2288663 Volatile Organic Compounds (GC/MS) by Method 8260B L1735258-08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4071336-1 05/17/24 18:48 • (LCSD) R4071336-2 05/17/24 19:09 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% (S) 1,2-Dichloroethane-d4 102 101 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 29 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 29 of 33 QUALITY CONTROL SUMMARYWG2289731 Volatile Organic Compounds (GC/MS) by Method 8260B L1735258-08 Method Blank (MB) (MB) R4072267-3 05/20/24 11:36 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l cis-1,2-Dichloroethene U 0.126 1.00 1,1,1-Trichloroethane U 0.149 1.00 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 102 77.0-126 (S) 1,2-Dichloroethane-d4 119 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4072267-1 05/20/24 10:34 • (LCSD) R4072267-2 05/20/24 10:55 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% cis-1,2-Dichloroethene 5.00 4.63 4.63 92.6 92.6 73.0-120 0.000 20 1,1,1-Trichloroethane 5.00 4.51 4.50 90.2 90.0 73.0-124 0.222 20 (S) Toluene-d8 102 102 80.0-120 (S) 4-Bromofluorobenzene 103 104 77.0-126 (S) 1,2-Dichloroethane-d4 118 118 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 30 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 30 of 33 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). J The identification of the analyte is acceptable; the reported value is an estimate. P1 RPD value not applicable for sample concentrations less than 5 times the reporting limit. V The sample concentration is too high to evaluate accurate spike recoveries. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 31 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 31 of 33 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:09 32 of 33 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735258 05/21/24 16:17 32 of 33 ANALYTICAL REPORT May 23, 2024 UPRR - Jacobs Sample Delivery Group:L1735599 Samples Received:05/11/2024 Project Number:1990 Description:Ogden UT-SP Yard Site:2024 BIENNIAL SAMPLING EVENT Report To:Terence Mares 6440 S. Milrock Dr. Suite 300 Holladay, UT 84121 Entire Report Reviewed By: May 23, 2024 [Preliminary Report] Brittnie L Boyd Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 1 of 19 May 23, 2024 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 1 of 19 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 21-MW2 L1735599-01 5 26-MW1 L1735599-02 6 TB04-05102024 L1735599-03 7 Qc: Quality Control Summary 8 Wet Chemistry by Method 2320 B-2011 8 Wet Chemistry by Method 353.2 10 Wet Chemistry by Method 9056A 11 Volatile Organic Compounds (GC) by Method RSK175 13 Volatile Organic Compounds (GC/MS) by Method 8260B 15 Gl: Glossary of Terms 17 Al: Accreditations & Locations 18 Sc: Sample Chain of Custody 19 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 2 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 2 of 19 SAMPLE SUMMARY Collected by Collected date/time Received date/time 21-MW2 L1735599-01 GW Alex Lennon (Jacobs) 05/10/24 10:05 05/11/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2286339 1 05/15/24 11:07 05/15/24 11:07 KA Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2289578 1 05/20/24 16:34 05/20/24 16:34 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286723 1 05/16/24 10:59 05/16/24 10:59 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2290390 5 05/21/24 22:04 05/21/24 22:04 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2286584 1 05/16/24 09:32 05/16/24 09:32 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2287571 1 05/16/24 17:10 05/16/24 17:10 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time 26-MW1 L1735599-02 GW Alex Lennon (Jacobs) 05/10/24 11:30 05/11/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 2320 B-2011 WG2286338 1 05/15/24 13:06 05/15/24 13:06 KA Mt. Juliet, TN Wet Chemistry by Method 353.2 WG2289578 1 05/20/24 16:35 05/20/24 16:35 BMD Mt. Juliet, TN Wet Chemistry by Method 9056A WG2286723 1 05/16/24 11:16 05/16/24 11:16 DLH Mt. Juliet, TN Wet Chemistry by Method 9056A WG2290390 5 05/21/24 22:13 05/21/24 22:13 DLH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2286584 1 05/16/24 09:34 05/16/24 09:34 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2287571 1 05/16/24 17:31 05/16/24 17:31 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time TB04-05102024 L1735599-03 GW Alex Lennon (Jacobs) 05/10/24 00:00 05/11/24 09:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2287571 1 05/16/24 12:20 05/16/24 12:20 JAH Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 3 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 3 of 19 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Brittnie L Boyd Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 4 of 19 Brittnie L Boyd Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 4 of 19 SAMPLE RESULTS - 01 L1735599 21-MW2 Collected date/time: 05/10/24 10:05 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 445000 8450 20000 1 05/15/2024 11:07 WG2286339 Sample Narrative: L1735599-01 WG2286339: Endpoint pH 4.5 headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/20/2024 16:34 WG2289578 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 161000 1900 5000 5 05/21/2024 22:04 WG2290390 Sulfate 36400 594 5000 1 05/16/2024 10:59 WG2286723 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 37.9 2.91 10.0 1 05/16/2024 09:32 WG2286584 Ethane U 4.07 13.0 1 05/16/2024 09:32 WG2286584 Ethene U 4.26 13.0 1 05/16/2024 09:32 WG2286584 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/16/2024 17:10 WG2287571 Chloroethane U 0.192 5.00 1 05/16/2024 17:10 WG2287571 Chloromethane U 0.960 2.50 1 05/16/2024 17:10 WG2287571 1,1-Dichloroethane U 0.100 1.00 1 05/16/2024 17:10 WG2287571 1,2-Dichloroethane U 0.0819 1.00 1 05/16/2024 17:10 WG2287571 1,1-Dichloroethene U 0.188 1.00 1 05/16/2024 17:10 WG2287571 cis-1,2-Dichloroethene 0.629 J 0.126 1.00 1 05/16/2024 17:10 WG2287571 trans-1,2-Dichloroethene U 0.149 1.00 1 05/16/2024 17:10 WG2287571 Ethylbenzene U 0.137 1.00 1 05/16/2024 17:10 WG2287571 Tetrachloroethene U 0.300 1.00 1 05/16/2024 17:10 WG2287571 1,1,1-Trichloroethane U 0.149 1.00 1 05/16/2024 17:10 WG2287571 1,1,2-Trichloroethane U 0.158 1.00 1 05/16/2024 17:10 WG2287571 Trichloroethene U 0.190 1.00 1 05/16/2024 17:10 WG2287571 Vinyl chloride U 0.234 1.00 1 05/16/2024 17:10 WG2287571 (S) Toluene-d8 104 80.0-120 05/16/2024 17:10 WG2287571 (S) 4-Bromofluorobenzene 99.9 77.0-126 05/16/2024 17:10 WG2287571 (S) 1,2-Dichloroethane-d4 108 70.0-130 05/16/2024 17:10 WG2287571 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 5 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 5 of 19 SAMPLE RESULTS - 02 L1735599 26-MW1 Collected date/time: 05/10/24 11:30 Wet Chemistry by Method 2320 B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Alkalinity 593000 8450 20000 1 05/15/2024 13:06 WG2286338 Sample Narrative: L1735599-02 WG2286338: Endpoint pH 4.5 headspace Wet Chemistry by Method 353.2 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate-Nitrite U 50.0 100 1 05/20/2024 16:35 WG2289578 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Chloride 948000 1900 5000 5 05/21/2024 22:13 WG2290390 Sulfate 75300 594 5000 1 05/16/2024 11:16 WG2286723 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 276 2.91 10.0 1 05/16/2024 09:34 WG2286584 Ethane U 4.07 13.0 1 05/16/2024 09:34 WG2286584 Ethene U 4.26 13.0 1 05/16/2024 09:34 WG2286584 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/16/2024 17:31 WG2287571 Chloroethane U 0.192 5.00 1 05/16/2024 17:31 WG2287571 Chloromethane U 0.960 2.50 1 05/16/2024 17:31 WG2287571 1,1-Dichloroethane U 0.100 1.00 1 05/16/2024 17:31 WG2287571 1,2-Dichloroethane U 0.0819 1.00 1 05/16/2024 17:31 WG2287571 1,1-Dichloroethene U 0.188 1.00 1 05/16/2024 17:31 WG2287571 cis-1,2-Dichloroethene 0.880 J 0.126 1.00 1 05/16/2024 17:31 WG2287571 trans-1,2-Dichloroethene U 0.149 1.00 1 05/16/2024 17:31 WG2287571 Ethylbenzene U 0.137 1.00 1 05/16/2024 17:31 WG2287571 Tetrachloroethene U 0.300 1.00 1 05/16/2024 17:31 WG2287571 1,1,1-Trichloroethane U 0.149 1.00 1 05/16/2024 17:31 WG2287571 1,1,2-Trichloroethane U 0.158 1.00 1 05/16/2024 17:31 WG2287571 Trichloroethene U 0.190 1.00 1 05/16/2024 17:31 WG2287571 Vinyl chloride U 0.234 1.00 1 05/16/2024 17:31 WG2287571 (S) Toluene-d8 108 80.0-120 05/16/2024 17:31 WG2287571 (S) 4-Bromofluorobenzene 132 J1 77.0-126 05/16/2024 17:31 WG2287571 (S) 1,2-Dichloroethane-d4 108 70.0-130 05/16/2024 17:31 WG2287571 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 6 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 6 of 19 SAMPLE RESULTS - 03 L1735599 TB04-05102024 Collected date/time: 05/10/24 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 05/16/2024 12:20 WG2287571 Chloroethane U 0.192 5.00 1 05/16/2024 12:20 WG2287571 Chloromethane U 0.960 2.50 1 05/16/2024 12:20 WG2287571 1,1-Dichloroethane U 0.100 1.00 1 05/16/2024 12:20 WG2287571 1,2-Dichloroethane U 0.0819 1.00 1 05/16/2024 12:20 WG2287571 1,1-Dichloroethene U 0.188 1.00 1 05/16/2024 12:20 WG2287571 cis-1,2-Dichloroethene U 0.126 1.00 1 05/16/2024 12:20 WG2287571 trans-1,2-Dichloroethene U 0.149 1.00 1 05/16/2024 12:20 WG2287571 Ethylbenzene U 0.137 1.00 1 05/16/2024 12:20 WG2287571 Tetrachloroethene U 0.300 1.00 1 05/16/2024 12:20 WG2287571 1,1,1-Trichloroethane U 0.149 1.00 1 05/16/2024 12:20 WG2287571 1,1,2-Trichloroethane U 0.158 1.00 1 05/16/2024 12:20 WG2287571 Trichloroethene U 0.190 1.00 1 05/16/2024 12:20 WG2287571 Vinyl chloride U 0.234 1.00 1 05/16/2024 12:20 WG2287571 (S) Toluene-d8 68.7 J2 80.0-120 05/16/2024 12:20 WG2287571 (S) 4-Bromofluorobenzene 85.1 77.0-126 05/16/2024 12:20 WG2287571 (S) 1,2-Dichloroethane-d4 103 70.0-130 05/16/2024 12:20 WG2287571 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 7 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 7 of 19 QUALITY CONTROL SUMMARYWG2286338 Wet Chemistry by Method 2320 B-2011 L1735599-02 Method Blank (MB) (MB) R4070098-2 05/15/24 12:42 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1735550-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735550-01 05/15/24 12:51 • (DUP) R4070098-3 05/15/24 12:58 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 187000 189000 1 1.17 20 Sample Narrative: OS: Endpoint pH 4.5 headspace DUP: Endpoint pH 4.5 L1736021-03 Original Sample (OS) • Duplicate (DUP) (OS) L1736021-03 05/15/24 15:28 • (DUP) R4070098-4 05/15/24 15:35 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 386000 380000 1 1.51 20 Sample Narrative: OS: Endpoint pH 4.5 headspace DUP: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4070098-1 05/15/24 12:35 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 100000 100 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 8 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 8 of 19 QUALITY CONTROL SUMMARYWG2286339 Wet Chemistry by Method 2320 B-2011 L1735599-01 Method Blank (MB) (MB) R4069884-2 05/15/24 09:16 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Alkalinity U 8450 20000 Sample Narrative: BLANK: Endpoint pH 4.5 L1734824-01 Original Sample (OS) • Duplicate (DUP) (OS) L1734824-01 05/15/24 10:13 • (DUP) R4069884-3 05/15/24 10:17 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 69400 72800 1 4.77 20 Sample Narrative: OS: Endpoint pH 4.5 headspace DUP: Endpoint pH 4.5 L1735749-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735749-01 05/15/24 11:48 • (DUP) R4069884-4 05/15/24 11:52 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Alkalinity 77200 76300 1 1.26 20 Sample Narrative: OS: Endpoint pH 4.5 headspace DUP: Endpoint pH 4.5 Laboratory Control Sample (LCS) (LCS) R4069884-1 05/15/24 09:08 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Alkalinity 100000 109000 109 90.0-110 Sample Narrative: LCS: Endpoint pH 4.5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 9 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 9 of 19 QUALITY CONTROL SUMMARYWG2289578 Wet Chemistry by Method 353.2 L1735599-01,02 Method Blank (MB) (MB) R4071845-1 05/20/24 16:02 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate-Nitrite U 50.0 100 L1735121-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735121-01 05/20/24 16:04 • (DUP) R4071845-3 05/20/24 16:06 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate-Nitrite 2310 2310 1 0.000 20 L1735121-08 Original Sample (OS) • Duplicate (DUP) (OS) L1735121-08 05/20/24 16:21 • (DUP) R4071845-6 05/20/24 16:22 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate-Nitrite 582 582 1 0.000 20 Laboratory Control Sample (LCS) (LCS) R4071845-2 05/20/24 16:03 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate-Nitrite 2500 2610 104 90.0-110 L1735121-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1735121-01 05/20/24 16:04 • (MS) R4071845-4 05/20/24 16:07 • (MSD) R4071845-5 05/20/24 16:08 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate-Nitrite 2500 2310 4710 4700 96.0 95.6 1 90.0-110 0.213 20 L1735121-08 Original Sample (OS) • Matrix Spike (MS) (OS) L1735121-08 05/20/24 16:21 • (MS) R4071845-7 05/20/24 16:24 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Nitrate-Nitrite 2500 582 3100 101 1 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 10 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 10 of 19 QUALITY CONTROL SUMMARYWG2286723 Wet Chemistry by Method 9056A L1735599-01,02 Method Blank (MB) (MB) R4070516-1 05/16/24 00:51 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Sulfate U 594 5000 L1735481-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735481-01 05/16/24 03:57 • (DUP) R4070516-3 05/16/24 04:14 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Sulfate 11400 11300 1 0.764 15 L1735540-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735540-01 05/16/24 08:27 • (DUP) R4070516-6 05/16/24 08:44 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Sulfate 74500 74500 1 0.0475 15 Laboratory Control Sample (LCS) (LCS) R4070516-2 05/16/24 01:07 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Sulfate 40000 38900 97.2 80.0-120 L1735481-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1735481-01 05/16/24 03:57 • (MS) R4070516-4 05/16/24 04:31 • (MSD) R4070516-5 05/16/24 04:48 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Sulfate 40000 11400 50300 50200 97.2 97.0 1 80.0-120 0.141 15 L1735540-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1735540-01 05/16/24 08:27 • (MS) R4070516-7 05/16/24 09:01 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Sulfate 40000 74500 106000 78.8 1 80.0-120 E J6 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 11 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 11 of 19 QUALITY CONTROL SUMMARYWG2290390 Wet Chemistry by Method 9056A L1735599-01,02 Method Blank (MB) (MB) R4072539-1 05/21/24 09:38 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Chloride U 379 1000 L1734178-01 Original Sample (OS) • Duplicate (DUP) (OS) L1734178-01 05/21/24 20:57 • (DUP) R4072539-3 05/21/24 21:07 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Chloride 13300 13300 1 0.267 15 Laboratory Control Sample (LCS) (LCS) R4072539-2 05/21/24 09:48 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Chloride 40000 40300 101 80.0-120 L1734178-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1734178-01 05/21/24 20:57 • (MS) R4072539-4 05/21/24 21:16 • (MSD) R4072539-5 05/21/24 21:26 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloride 40000 13300 53900 53900 102 102 1 80.0-120 0.104 15 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 12 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 12 of 19 QUALITY CONTROL SUMMARYWG2286584 Volatile Organic Compounds (GC) by Method RSK175 L1735599-01,02 Method Blank (MB) (MB) R4070404-2 05/16/24 09:07 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 Ethane U 4.07 13.0 Ethene U 4.26 13.0 L1735599-01 Original Sample (OS) • Duplicate (DUP) (OS) L1735599-01 05/16/24 09:32 • (DUP) R4070404-3 05/16/24 10:44 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane 37.9 37.6 1 0.795 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 L1736007-03 Original Sample (OS) • Duplicate (DUP) (OS) L1736007-03 05/16/24 11:05 • (DUP) R4070404-4 05/16/24 11:37 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 Ethane U U 1 0.000 20 Ethene U U 1 0.000 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4070404-1 05/16/24 09:04 • (LCSD) R4070404-7 05/16/24 11:51 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 63.8 65.2 94.1 96.2 85.0-115 2.17 20 Ethane 129 116 117 89.9 90.7 85.0-115 0.858 20 Ethene 127 119 119 93.7 93.7 85.0-115 0.000 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 13 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 13 of 19 QUALITY CONTROL SUMMARYWG2286584 Volatile Organic Compounds (GC) by Method RSK175 L1735599-01,02 L1735501-15 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1735501-15 05/16/24 09:17 • (MS) R4070404-5 05/16/24 11:41 • (MSD) R4070404-6 05/16/24 11:46 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Methane 67.8 2840 2890 2880 73.7 59.0 1 50.0-150 0.347 20 Ethane 129 4.33 139 147 104 111 1 50.0-150 5.59 20 Ethene 127 24.3 157 165 104 111 1 50.0-150 4.97 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 14 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 14 of 19 QUALITY CONTROL SUMMARYWG2287571 Volatile Organic Compounds (GC/MS) by Method 8260B L1735599-01,02,03 Method Blank (MB) (MB) R4071183-3 05/16/24 11:59 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Chloroethane U 0.192 5.00 Chloromethane U 0.960 2.50 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 Ethylbenzene U 0.137 1.00 Tetrachloroethene U 0.300 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Vinyl chloride U 0.234 1.00 (S) Toluene-d8 105 80.0-120 (S) 4-Bromofluorobenzene 100 77.0-126 (S) 1,2-Dichloroethane-d4 106 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4071183-1 05/16/24 07:49 • (LCSD) R4071183-2 05/16/24 08:10 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 4.82 4.86 96.4 97.2 70.0-123 0.826 20 Chloroethane 5.00 4.34 4.19 86.8 83.8 47.0-150 J J 3.52 20 Chloromethane 5.00 4.73 4.35 94.6 87.0 41.0-142 8.37 20 1,1-Dichloroethane 5.00 4.94 4.98 98.8 99.6 70.0-126 0.806 20 1,2-Dichloroethane 5.00 5.09 4.97 102 99.4 70.0-128 2.39 20 1,1-Dichloroethene 5.00 4.79 4.83 95.8 96.6 71.0-124 0.832 20 cis-1,2-Dichloroethene 5.00 4.97 5.11 99.4 102 73.0-120 2.78 20 trans-1,2-Dichloroethene 5.00 4.72 4.88 94.4 97.6 73.0-120 3.33 20 Ethylbenzene 5.00 4.72 4.87 94.4 97.4 79.0-123 3.13 20 Tetrachloroethene 5.00 4.69 4.80 93.8 96.0 72.0-132 2.32 20 1,1,1-Trichloroethane 5.00 4.91 5.24 98.2 105 73.0-124 6.50 20 1,1,2-Trichloroethane 5.00 4.76 4.94 95.2 98.8 80.0-120 3.71 20 Trichloroethene 5.00 5.07 4.76 101 95.2 78.0-124 6.31 20 Vinyl chloride 5.00 4.34 4.16 86.8 83.2 67.0-131 4.24 20 (S) Toluene-d8 101 103 80.0-120 (S) 4-Bromofluorobenzene 101 103 77.0-126 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 15 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 15 of 19 QUALITY CONTROL SUMMARYWG2287571 Volatile Organic Compounds (GC/MS) by Method 8260B L1735599-01,02,03 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4071183-1 05/16/24 07:49 • (LCSD) R4071183-2 05/16/24 08:10 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% (S) 1,2-Dichloroethane-d4 109 109 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 16 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 16 of 19 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). J The identification of the analyte is acceptable; the reported value is an estimate. J1 Surrogate recovery limits have been exceeded; values are outside upper control limits. J2 Surrogate recovery limits have been exceeded; values are outside lower control limits. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 17 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 17 of 19 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 13:22 18 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: UPRR - Jacobs 1990 L1735599 05/23/24 14:14 18 of 19 Attachment 3 Data Validation Report Data Verification Report GHD | Union Pacific Railroad | 11183954-95-03-1990 | Data Verification Report 1 June 17, 2024 To Terence Mares Project No. 11183954-95-03-1990 Copy to Alex Lennon, Jesse Orth, Julie Lidstone DVR No. 1825 From Jeffrey Cloud/eew Contact No. 1 971 925 3756 Project Name Union Pacific Railroad (UPRR) Email Jeffrey.Cloud@ghd.com Subject Analytical Results and Data Verification of Reports L1733596, L1734148, L1734687, L1735258 and L1735599 Biennial Sampling Event SP Yard Ogden, Utah May 2024 The services undertaken by GHD in connection with preparing this report were limited to those specifically detailed in the report and are subject to the scope limitations set out in the report. 1.Introduction This document details a data verification of analytical results for water samples collected in support of the Biennial Sampling Event at the SP Yard site in Ogden, Utah during May 2024. Samples were submitted to Pace National Center for Testing and Innovation, located in Mt. Juliet, Tennessee. A sample collection and analysis summary is presented in Table 1. A summary of the analytical methodology is presented in Table 2. The validated analytical results are summarized in Table 3. Standard GHD report deliverables were submitted by the laboratory. The analytical results and supporting quality assurance/quality control (QA/QC) data were assessed. Evaluation of the data was based on information obtained from the chain of custody forms, finished report forms, method blank data, laboratory duplicate data, recovery data from surrogate spikes, laboratory control data, matrix spikes and field QC data. The QA/QC criteria by which these data have been assessed are outlined in the analytical methods referenced in Table 2 and applicable guidance from the documents entitled: 1."National Functional Guidelines for Organic Superfund Methods Data Review", United States Environmental Protection Agency (USEPA) 540-R-20-005, November 2020 2."National Functional Guidelines for Inorganic Superfund Methods Data Review", USEPA 542-R-20-006, November 2020 These items will subsequently be referred to as the "Guidelines" in this report. GHD | Union Pacific Railroad | 11183954-95-03-1990 | Data Verification Report 2 2. Sample Holding Time and Preservation The sample holding time criteria and sample preservation requirements for the requested parameters are summarized in the methods. The sample chain of custody documents and analytical reports were used to determine sample holding times. All samples were prepared and analyzed within the required holding times with the exception of one sample for diesel range organics (DRO)/motor oil range organics (ORO) analysis. The associated sample results were qualified as estimated due to the implied low bias (see Table 4). All sample containers were properly preserved, delivered on ice and stored by the laboratory at the required temperature (0-6°C) with the exception of one sample container received by the laboratory with a pH outside of the acceptable limit resulting in a reduced holding time. The sample was not analyzed within the reduced holding time and was qualified as described above. 3. Laboratory Method Blank Analyses Method blanks are prepared from a purified matrix and analyzed with investigative samples to determine the existence and magnitude of sample contamination introduced during the analytical procedures. For this study, laboratory method blanks were analyzed at a minimum frequency of one per analytical batch. All method blank results were non-detect, indicating that laboratory contamination was not a factor for this investigation with the exception of chloride present at a low concentration. The associated sample result was significantly greater than the blank and was not impacted. No qualification of the data was deemed necessary. 4. Surrogate Spike Recoveries In accordance with the methods employed, all samples, blanks, and QC samples analyzed for organics are spiked with surrogate compounds prior to sample extraction and/or analysis. Surrogate recoveries provide a means to evaluate the effects of laboratory performance on individual sample matrices. Due to necessary sample dilutions of five times or greater, surrogate recoveries were not assessed for some results. All samples submitted for volatile organic compound (VOC), semi-volatile organic compound (SVOC) and diesel range organics (DRO)/motor oil range organics (ORO) analyses were spiked with the appropriate number of surrogate compounds prior to sample extraction and/or analysis. Each individual surrogate compound is expected to meet the associated control limits with the exception of SVOC analyses. It is generally acceptable for SVOC analyses that one outlying surrogate in the base/neutral or acid fractions is acceptable as long as the recovery is at least 10 percent. Surrogate recoveries were assessed against the control limits. All surrogate recoveries met the associated criteria with the exception of two high surrogate recoveries. The associated non-detect results were not impacted and the associated sample detections were qualified as estimated due to the implied high bias (see Table 5). 5. Laboratory Control Sample Analyses Laboratory control samples (LCS)/laboratory control sample duplicates (LCSD) are prepared and analyzed as samples to assess the analytical efficiencies of the methods employed, independent of sample matrix effects. The relative percent difference (RPD) of the LCS/LCSD recoveries is used to evaluate analytical precision. For this study, LCS or LCS/LCSD were analyzed at a minimum frequency of one per analytical batch. GHD | Union Pacific Railroad | 11183954-95-03-1990 | Data Verification Report 3 5.1 Organic Analyses The LCS and LCS/LCSD contained all analytes of interest. All LCS and LCS/LCSD recoveries and RPD values were within associated control limits, demonstrating acceptable analytical accuracy and precision (where applicable) with a few exceptions. Where high recoveries were found the associated non-detect results were not impacted and the associated sample detection was qualified as estimated due to the implied high bias. Where high RPDs were found the associated non-detect results were not impacted and the associated sample detections were qualified as estimated due to variability. A summary of the qualifications is presented in Table 6. 5.2 Inorganic Analyses The LCS contained all analytes of interest. LCS recoveries were assessed per the "Guidelines". All LCS recoveries were within the control limits, demonstrating acceptable analytical accuracy. 6. Matrix Spike Analyses To evaluate the effects of sample matrices on the preparation process, measurement procedures, and accuracy of a particular analysis, samples are spiked with a known concentration of the analyte of concern and analyzed as matrix spike (MS) or MS/matrix spike duplicate (MSD) samples. The RPD between the MS and MSD is used to assess analytical precision. MS and MS/MSD analyses were performed as specified in Table 1. If the original sample concentration is significantly greater than the spike concentration, the recovery is not assessed. 6.1 Organic Analyses The MS/MSD samples were spiked with the analytes of interest. All percent recoveries and RPD values were within the associated control limits, demonstrating acceptable analytical accuracy and precision. 6.2 Inorganic Analyses The MS and MS/MSD samples were spiked with the analytes of interest and the results were evaluated using the "Guidelines". All percent recoveries and RPD values were within the control limits, demonstrating acceptable analytical accuracy and precision (where applicable) with the exception of two low sulfate recoveries. The associated sample results were qualified as estimated due to the implied low bias (see Table 7). 7. Duplicate Sample Analyses Analytical precision is evaluated based on the analysis of laboratory duplicate samples. For this study, duplicate samples were prepared and analyzed by the laboratory as specified in Table 1. The duplicate results were evaluated per the "Guidelines". All duplicate analyses performed were acceptable, demonstrating acceptable analytical precision. 8. Field QA/QC Samples The field QA/QC consisted of four trip blank samples and three field duplicate sample sets. 8.1 Trip Blank Sample Analysis To evaluate contamination from sample collection, transportation, storage, and analytical activities, four trip blanks were submitted to the laboratory for analysis. All results were non-detect for the analytes of interest. GHD | Union Pacific Railroad | 11183954-95-03-1990 | Data Verification Report 4 8.2 Field Duplicate Sample Analysis To assess the analytical and sampling protocol precision, three field duplicate samples were collected and submitted "blind" to the laboratory, as specified in Table 1. The RPDs associated with these duplicate samples must be less than 50 percent. If the reported concentration in both the investigative sample and its duplicate are less than five times the reporting limit (RL), the evaluation criterion is one times the RL value. All field duplicate results were within acceptable agreement, demonstrating acceptable sampling and analytical precision with one exception. The associated sample result and its duplicate were qualified as estimated due to variability (see Table 8). 9.Analyte Reporting Data were reported down to the laboratory’s quantitation limit (QL), which is defined as the method detection limit (MDL)with sample-specific adjustments for dilutions, aliquot size, volumes, etc. Positive analyte detections less than the RL but greater than the QL were reported as estimated (J) in Table 3. Non-detect results were presented as non-detect at the QL in Table 3. If multiple QC results exhibit variability and/or high/low directional biases as related to a sample result, then any directional bias indicators are removed from the final sample result qualification. 10.Conclusion Based on the assessment detailed in the foregoing, the summarized data are acceptable with the specific qualifications noted herein. Regards Jeffrey Cloud Data Management Team – Data Validator Page 1 of 3Table 1 Sample Collection and Analysis Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Analysis/Parameters Location Matrix Collection Date Collection Time Di s s o l v e d G a s e s Al k a l i n i t y DR O / O R O VO C s SV O C s An i o n s Comments (mm/dd/yyyy)(hr:min) 21-MW2 21-MW2 Water 05/10/2024 10:05 X X X X DUP 22A-MW1 22A-MW1 Water 05/08/2024 15:45 X X X X 22A-MW3 22A-MW3 Water 05/09/2024 10:00 X X X X 22A-MW6 22A-MW6 Water 05/09/2024 09:30 X X X X 22B-MW2D 22B-MW2D Water 05/09/2024 12:10 X X X X 26-MW1 26-MW1 Water 05/10/2024 11:30 X X X X 26-STMW1 26-STMW1 Water 05/09/2024 11:25 X X X X 30-MW1 30-MW1 Water 05/09/2024 13:10 X X X X DUP 30-MW6D 30-MW6D Water 05/09/2024 14:00 X X X X FD-03 30-MW6D Water 05/09/2024 14:10 X X X X MS - DUP - FD (30-MW6D) 33-MP2 33-MP2 Water 05/07/2024 08:55 X X X 33-MW4AA 33-MW4AA Water 05/07/2024 14:05 X X X 33-MW5FP 33-MW5FP Water 05/07/2024 11:02 X X X 33-MW6 33-MW6 Water 05/07/2024 09:35 X X X 33-MW6FP 33-MW6FP Water 05/07/2024 10:15 X X X Sample Identification GHD 11183954-MEM-1825-Tbls.xlsx Page 2 of 3Table 1 Sample Collection and Analysis Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Analysis/Parameters Location Matrix Collection Date Collection Time Di s s o l v e d G a s e s Al k a l i n i t y DR O / O R O VO C s SV O C s An i o n s Comments (mm/dd/yyyy)(hr:min) Sample Identification 33-MW6FP 33-MW6FP Water 05/08/2024 11:00 X X X MS/MSD FD-01 33-MW6FP Water 05/08/2024 11:05 X X X FD (33-MW6FP) 33-MW9 33-MW9 Water 05/07/2024 11:55 X X X 33-MW10FP 33-MW10FP Water 05/06/2024 16:45 X X X 33-MW12FP 33-MW12FP Water 05/07/2024 12:50 X X X 34-MW1 34-MW1 Water 05/08/2024 08:30 X X X X 34-MW2 34-MW2 Water 05/08/2024 12:15 X X X X 34-MW3 34-MW3 Water 05/06/2024 16:05 X X X X DUP 34-MW7D 34-MW7D Water 05/08/2024 14:10 X X X X MS/MSD - DUP FD-02 34-MW7D Water 05/08/2024 14:15 X X X X FD (34-MW7D) 34-MW8 34-MW8 Water 05/09/2024 16:02 X X X X 34-MW9 34-MW9 Water 05/08/2024 13:05 X X X X 34-MW10 34-MW10 Water 05/08/2024 09:50 X X X X GOODE-LAKE Goode Lake Water 05/07/2024 09:30 X TB01-05072024 --Water 05/07/2024 --X Trip Blank GHD 11183954-MEM-1825-Tbls.xlsx Page 3 of 3Table 1 Sample Collection and Analysis Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Analysis/Parameters Location Matrix Collection Date Collection Time Di s s o l v e d G a s e s Al k a l i n i t y DR O / O R O VO C s SV O C s An i o n s Comments (mm/dd/yyyy)(hr:min) Sample Identification TB02_05082024 --Water 05/08/2024 --X Trip Blank TB03-05092024 --Water 05/09/2024 --X Trip Blank TB04-05102024 --Water 05/10/2024 --X Trip Blank Notes: DUP - Laboratory Duplicate FD - Field Duplicate sample of sample in parenthesis MS - Matrix Spike MS/MSD - Matrix Spike/Matrix Spike Duplicate VOCs - Volatile Organic Compounds SVOCs - Semi-volatile Organic Compounds DRO/ORO - Diesel Range Organics/Motor Oil Range Organics "--"- Not Applicable GHD 11183954-MEM-1825-Tbls.xlsx Page 1 of 1 Table 2 Analytical Methods Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Parameter Method Matrix Volatile Organic Compounds (VOCs)SW-846 8260B(1)Water Semi-volatile Organic Compounds (SVOCs)SW-846 8270D SIM(1)Water Diesel Range Organics (DRO)/Motor Oil Range Organics (ORO)SW-846 8015(1)Water Dissolved Gases RSK-175(2)Water Alkalinity SM 2320B(3)Water Anions SW-846 9056A(1)Water EPA 353.2(4)Water Notes: (1)- SW-846 - "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods", SW-846, Third Edition, 1986, with subsequent revisions (2)- EPA-RSK SOP 175 - EPA Internal Standard Operating Procedure #175 dated 8/11/94 by Bryan Newell at the USEPA R.S. Kerr Laboratory (3)- SM - "Standard Methods for the Examination of Water and Wastewater", 18th Edition, 1992, with subsequent revisions (4)- EPA - MCAWW - “Methods for Chemical Analysis of Water and Waste,” EPA-600/4-79-020, revised March 1983, with subsequent revisions SIM - Selected Ion Monitoring GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 1 of 9 Location ID:21-MW2 22A-MW1 22A-MW3 22A-MW6 22B-MW2D 26-MW1 26-STMW1 30-MW1 30-MW6D 30-MW6D Sample Name:21-MW2 22A-MW1 22A-MW3 22A-MW6 22B-MW2D 26-MW1 26-STMW1 30-MW1 30-MW6D FD-03 Sample Date:05/10/2024 05/08/2024 05/09/2024 05/09/2024 05/09/2024 05/10/2024 05/09/2024 05/09/2024 05/09/2024 05/09/2024 Duplicate Parameters Unit Volatile Organic Compounds 1,1,1-Trichloroethane µg/L <0.149 <0.149 <0.149 1.29 J <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 1,1,2-Trichloroethane µg/L <0.158 <0.158 <0.158 <0.790 <0.158 <0.158 <0.158 <0.158 <0.158 <0.158 1,1-Dichloroethane µg/L <0.100 1.73 <0.100 8.27 <0.100 <0.100 <0.100 <0.100 <0.100 <0.100 1,1-Dichloroethene µg/L <0.188 <0.188 <0.188 <0.940 <0.188 <0.188 <0.188 <0.188 <0.188 <0.188 1,2-Dichloroethane µg/L <0.0819 <0.0819 <0.0819 <0.409 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 Benzene µg/L <0.0941 <0.0941 <0.0941 <0.471 <0.0941 <0.0941 <0.0941 <0.0941 0.219 J 0.209 J Chloroethane µg/L <0.192 <0.192 <0.192 <0.960 <0.192 <0.192 <0.192 <0.192 <0.192 <0.192 Chloromethane (Methyl chloride)µg/L <0.960 <0.960 <0.960 <4.80 <0.960 <0.960 <0.960 <0.960 <0.960 <0.960 cis-1,2-Dichloroethene µg/L 0.629 J <0.126 <0.126 <0.630 0.741 J 0.880 J <0.126 <0.126 0.791 J 0.640 J Ethylbenzene µg/L <0.137 <0.137 <0.137 <0.685 <0.137 <0.137 <0.137 <0.137 <0.137 <0.137 Tetrachloroethene µg/L <0.300 <0.300 0.406 J <1.50 <0.300 <0.300 <0.300 <0.300 <0.300 <0.300 trans-1,2-Dichloroethene µg/L <0.149 <0.149 <0.149 <0.745 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 Trichloroethene µg/L <0.190 <0.190 <0.190 <0.950 <0.190 <0.190 <0.190 <0.190 <0.190 <0.190 Vinyl chloride µg/L <0.234 6.31 <0.234 <1.17 3.24 <0.234 <0.234 0.251 J 9.88 9.36 Semi-volatile Organic Compounds, SIM 1-Methylnaphthalene µg/L -------------------- 2-Chloronaphthalene µg/L -------------------- 2-Methylnaphthalene µg/L -------------------- Acenaphthene µg/L -------------------- Acenaphthylene µg/L -------------------- Anthracene µg/L -------------------- GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 2 of 9 Location ID:21-MW2 22A-MW1 22A-MW3 22A-MW6 22B-MW2D 26-MW1 26-STMW1 30-MW1 30-MW6D 30-MW6D Sample Name:21-MW2 22A-MW1 22A-MW3 22A-MW6 22B-MW2D 26-MW1 26-STMW1 30-MW1 30-MW6D FD-03 Sample Date:05/10/2024 05/08/2024 05/09/2024 05/09/2024 05/09/2024 05/10/2024 05/09/2024 05/09/2024 05/09/2024 05/09/2024 Duplicate Parameters Unit Semi-volatile Organic Compounds, SIM (Continued) Benzo(a)anthracene µg/L -------------------- Benzo(a)pyrene µg/L -------------------- Benzo(b)fluoranthene µg/L -------------------- Benzo(g,h,i)perylene µg/L -------------------- Benzo(k)fluoranthene µg/L -------------------- Chrysene µg/L -------------------- Dibenz(a,h)anthracene µg/L -------------------- Fluoranthene µg/L -------------------- Fluorene µg/L -------------------- Indeno(1,2,3-cd)pyrene µg/L -------------------- Naphthalene µg/L -------------------- Phenanthrene µg/L -------------------- Pyrene µg/L -------------------- Dissolved Gases Ethane µg/L <4.07 13.1 <4.07 <4.07 <4.07 <4.07 <4.07 <4.07 7.29 J 5.67 J Ethene µg/L <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 Methane µg/L 37.9 2650 <2.91 <2.91 2210 276 79.8 <2.91 2060 1920 Total Petroleum Hydrocarbons Total Petroleum Hydrocarbons (C10-C28) DRO µg/L -------------------- Total Petroleum Hydrocarbons (C28-C40) ORO µg/L -------------------- GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 3 of 9 Location ID:21-MW2 22A-MW1 22A-MW3 22A-MW6 22B-MW2D 26-MW1 26-STMW1 30-MW1 30-MW6D 30-MW6D Sample Name:21-MW2 22A-MW1 22A-MW3 22A-MW6 22B-MW2D 26-MW1 26-STMW1 30-MW1 30-MW6D FD-03 Sample Date:05/10/2024 05/08/2024 05/09/2024 05/09/2024 05/09/2024 05/10/2024 05/09/2024 05/09/2024 05/09/2024 05/09/2024 Duplicate Unit µg/L 445000 642000 605000 399000 593000 593000 472000 425000 483000 480000 µg/L 161000 234000 24400 92800 151000 948000 237000 373000 200000 208000 µg/L <50.0 <50.0 18900 13300 <50.0 <50.0 <50.0 2660 <50.0 <50.0 µg/L 36400 21800 J-82400 47700 J 9880 J 75300 195000 243000 68600 69000 Parameters General Chemistry Alkalinity, total (as CaCO3) Chloride Nitrite/Nitrate Sulfate GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 4 of 9 Location ID: Sample Name: Sample Date: Parameters Unit Volatile Organic Compounds 1,1,1-Trichloroethane µg/L 1,1,2-Trichloroethane µg/L 1,1-Dichloroethane µg/L 1,1-Dichloroethene µg/L 1,2-Dichloroethane µg/L Benzene µg/L Chloroethane µg/L Chloromethane (Methyl chloride)µg/L cis-1,2-Dichloroethene µg/L Ethylbenzene µg/L Tetrachloroethene µg/L trans-1,2-Dichloroethene µg/L Trichloroethene µg/L Vinyl chloride µg/L Semi-volatile Organic Compounds, SIM 1-Methylnaphthalene µg/L 2-Chloronaphthalene µg/L 2-Methylnaphthalene µg/L Acenaphthene µg/L Acenaphthylene µg/L Anthracene µg/L 33-MP2 33-MW4AA 33-MW5FP 33-MW6 33-MW6FP 33-MW6FP 33-MW6FP 33-MW9 33-MW10FP 33-MW12FP 33-MP2 33-MW4AA 33-MW5FP 33-MW6 33-MW6FP 33-MW6FP FD-01 33-MW9 33-MW10FP 33-MW12FP 05/07/2024 05/07/2024 05/07/2024 05/07/2024 05/07/2024 05/08/2024 05/08/2024 05/07/2024 05/06/2024 05/07/2024 Duplicate <0.149 <1.49 <0.149 <0.745 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.158 <1.58 <0.158 <0.790 <0.158 <0.158 <0.158 <0.158 <0.158 <0.158 <0.100 <1.00 <0.100 <0.500 <0.100 <0.100 <0.100 <0.100 <0.100 <0.100 <0.188 <1.88 <0.188 <0.940 <0.188 <0.188 <0.188 <0.188 <0.188 <0.188 <0.0819 <0.819 <0.0819 <0.409 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 3.37 <0.941 <0.0941 58.7 20.6 21.4 20.7 <0.0941 1.00 J <0.0941 <0.192 <1.92 <0.192 <0.960 <0.192 <0.192 <0.192 <0.192 <0.192 <0.192 <0.960 <9.60 <0.960 <4.80 <0.960 <0.960 <0.960 <0.960 <0.960 <0.960 <0.126 <1.26 <0.126 <0.630 <0.126 <0.126 <0.126 <0.126 <0.126 <0.126 25.3 19.3 <0.137 194 27.9 26.9 26.1 <0.137 11.8 0.191 J <0.300 <3.00 <0.300 <1.50 <0.300 <0.300 <0.300 <0.300 <0.300 <0.300 <0.149 <1.49 <0.149 <0.745 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.190 <1.90 <0.190 <0.950 <0.190 <0.190 <0.190 <0.190 <0.190 <0.190 <0.234 <2.34 <0.234 <1.17 <0.234 <0.234 <0.234 <0.234 <0.234 <0.234 90.7 29.3 <0.0687 314 133 140 129 <0.0687 104 0.276 <0.0682 <0.0682 <0.0682 <0.0682 <0.0682 <0.0682 <0.0682 <0.0682 <0.0682 <0.0682 0.762 18.1 <0.0674 60.7 0.759 0.528 0.547 <0.0674 82.0 0.137 J 69.1 13.7 0.784 177 106 113 106 <0.0190 83.0 0.0931 2.69 0.527 0.0631 5.48 3.03 3.16 3.32 <0.0171 4.91 <0.0171 11.3 0.604 <0.0190 15.5 12.8 12.9 12.8 <0.0190 11.3 <0.0190 GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 5 of 9 Location ID: Sample Name: Sample Date: Parameters Unit Semi-volatile Organic Compounds, SIM (Continued) Benzo(a)anthracene µg/L Benzo(a)pyrene µg/L Benzo(b)fluoranthene µg/L Benzo(g,h,i)perylene µg/L Benzo(k)fluoranthene µg/L Chrysene µg/L Dibenz(a,h)anthracene µg/L Fluoranthene µg/L Fluorene µg/L Indeno(1,2,3-cd)pyrene µg/L Naphthalene µg/L Phenanthrene µg/L Pyrene µg/L Dissolved Gases Ethane µg/L Ethene µg/L Methane µg/L Total Petroleum Hydrocarbons Total Petroleum Hydrocarbons (C10-C28) DRO µg/L Total Petroleum Hydrocarbons (C28-C40) ORO µg/L 33-MP2 33-MW4AA 33-MW5FP 33-MW6 33-MW6FP 33-MW6FP 33-MW6FP 33-MW9 33-MW10FP 33-MW12FP 33-MP2 33-MW4AA 33-MW5FP 33-MW6 33-MW6FP 33-MW6FP FD-01 33-MW9 33-MW10FP 33-MW12FP 05/07/2024 05/07/2024 05/07/2024 05/07/2024 05/07/2024 05/08/2024 05/08/2024 05/07/2024 05/06/2024 05/07/2024 Duplicate 0.390 <0.0203 <0.0203 0.240 0.407 0.345 0.305 <0.0203 0.401 <0.0203 0.0559 <0.0184 <0.0184 <0.0184 0.105 0.0456 J 0.0470 J <0.0184 0.0855 <0.0184 0.0535 <0.0168 <0.0168 <0.0168 0.0879 0.0521 0.0425 J <0.0168 0.0740 <0.0168 <0.0184 <0.0184 <0.0184 <0.0184 0.0389 J <0.0184 <0.0184 <0.0184 0.0302 J <0.0184 <0.0202 <0.0202 <0.0202 <0.0202 <0.0202 <0.0202 <0.0202 <0.0202 0.0215 J <0.0202 0.322 <0.0179 <0.0179 0.203 0.364 0.360 0.366 <0.0179 0.400 <0.0179 <0.0160 <0.0160 <0.0160 <0.0160 <0.0160 <0.0160 <0.0160 <0.0160 <0.0160 <0.0160 5.82 0.176 0.0865 J 5.35 5.23 5.12 5.04 <0.0270 6.52 <0.0270 24.5 3.25 0.200 48.1 35.3 40.0 39.5 <0.0169 54.9 <0.0169 <0.0158 <0.0158 <0.0158 <0.0158 0.0279 J <0.0158 <0.0158 <0.0158 0.0161 J <0.0158 42.9 95.1 <0.0917 407 10.0 7.61 7.91 <0.0917 541 1.34 13.1 2.67 <0.0180 83.1 32.4 31.4 29.2 <0.0180 60.5 <0.0180 9.28 0.358 0.145 8.45 8.87 8.04 7.92 0.0212 J 11.3 J+<0.0169 -------------------- -------------------- -------------------- 936 J 469 J 65.2 J 3340 1130 J 1340 J 2460 J <22.2 J 2400 31.4 J 480 410 J+645 <11.8 85.2 J <11.8 <11.8 <11.8 J 118 385 GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 6 of 9 Location ID: Sample Name: Sample Date: Unit µg/L µg/L µg/L µg/L Parameters General Chemistry Alkalinity, total (as CaCO3) Chloride Nitrite/Nitrate Sulfate 33-MP2 33-MW4AA 33-MW5FP 33-MW6 33-MW6FP 33-MW6FP 33-MW6FP 33-MW9 33-MW10FP 33-MW12FP 33-MP2 33-MW4AA 33-MW5FP 33-MW6 33-MW6FP 33-MW6FP FD-01 33-MW9 33-MW10FP 33-MW12FP 05/07/2024 05/07/2024 05/07/2024 05/07/2024 05/07/2024 05/08/2024 05/08/2024 05/07/2024 05/06/2024 05/07/2024 Duplicate -------------------- -------------------- -------------------- -------------------- GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 7 of 9 Location ID: Sample Name: Sample Date: Parameters Unit Volatile Organic Compounds 1,1,1-Trichloroethane µg/L 1,1,2-Trichloroethane µg/L 1,1-Dichloroethane µg/L 1,1-Dichloroethene µg/L 1,2-Dichloroethane µg/L Benzene µg/L Chloroethane µg/L Chloromethane (Methyl chloride)µg/L cis-1,2-Dichloroethene µg/L Ethylbenzene µg/L Tetrachloroethene µg/L trans-1,2-Dichloroethene µg/L Trichloroethene µg/L Vinyl chloride µg/L Semi-volatile Organic Compounds, SIM 1-Methylnaphthalene µg/L 2-Chloronaphthalene µg/L 2-Methylnaphthalene µg/L Acenaphthene µg/L Acenaphthylene µg/L Anthracene µg/L 34-MW1 34-MW2 34-MW3 34-MW7D 34-MW7D 34-MW8 34-MW9 34-MW10 Goode Lake 34-MW1 34-MW2 34-MW3 34-MW7D FD-02 34-MW8 34-MW9 34-MW10 GOODE-LAKE 05/08/2024 05/08/2024 05/06/2024 05/08/2024 05/08/2024 05/09/2024 05/08/2024 05/08/2024 05/07/2024 Duplicate <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.158 <0.158 <0.158 <0.158 <0.158 <0.158 <0.158 <0.158 <0.158 <0.100 <0.100 0.332 J 0.527 J <0.100 0.350 J <0.100 <0.100 <0.100 <0.188 <0.188 <0.188 <0.188 <0.188 <0.188 <0.188 <0.188 <0.188 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0819 <0.0941 <0.0941 <0.0941 <0.0941 <0.0941 <0.0941 <0.0941 <0.0941 0.137 J <0.192 <0.192 <0.192 <0.192 <0.192 <0.192 <0.192 <0.192 <0.192 <0.960 <0.960 <0.960 <0.960 <0.960 <0.960 <0.960 <0.960 <0.960 <0.126 <0.126 0.328 J <0.126 <0.126 <0.126 <0.126 <0.126 <0.126 <0.137 <0.137 <0.137 <0.137 <0.137 <0.137 <0.137 <0.137 <0.137 <0.300 <0.300 0.328 J <0.300 <0.300 <0.300 <0.300 <0.300 <0.300 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.149 <0.190 <0.190 <0.190 <0.190 <0.190 <0.190 <0.190 <0.190 <0.190 <0.234 <0.234 <0.234 <0.234 <0.234 <0.234 <0.234 <0.234 <0.234 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 8 of 9 Location ID: Sample Name: Sample Date: Parameters Unit Semi-volatile Organic Compounds, SIM (Continued) Benzo(a)anthracene µg/L Benzo(a)pyrene µg/L Benzo(b)fluoranthene µg/L Benzo(g,h,i)perylene µg/L Benzo(k)fluoranthene µg/L Chrysene µg/L Dibenz(a,h)anthracene µg/L Fluoranthene µg/L Fluorene µg/L Indeno(1,2,3-cd)pyrene µg/L Naphthalene µg/L Phenanthrene µg/L Pyrene µg/L Dissolved Gases Ethane µg/L Ethene µg/L Methane µg/L Total Petroleum Hydrocarbons Total Petroleum Hydrocarbons (C10-C28) DRO µg/L Total Petroleum Hydrocarbons (C28-C40) ORO µg/L 34-MW1 34-MW2 34-MW3 34-MW7D 34-MW7D 34-MW8 34-MW9 34-MW10 Goode Lake 34-MW1 34-MW2 34-MW3 34-MW7D FD-02 34-MW8 34-MW9 34-MW10 GOODE-LAKE 05/08/2024 05/08/2024 05/06/2024 05/08/2024 05/08/2024 05/09/2024 05/08/2024 05/08/2024 05/07/2024 Duplicate ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ <4.07 <4.07 <4.07 <4.07 <4.07 <4.07 <4.07 <4.07 -- <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 <4.26 -- <2.91 129 <2.91 669 677 358 323 638 -- ------------------ ------------------ GHD 11183954-MEM-1825-Tbls.xlsx Table 3 Analytical Results Summary Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Page 9 of 9 Location ID: Sample Name: Sample Date: Parameters Unit General Chemistry Alkalinity, total (as CaCO3)µg/L Chloride µg/L Nitrite/Nitrate µg/L Sulfate µg/L Notes: < - Not detected at the associated reporting limit J - Estimated concentration J+ - Estimated concentration; implied high bias J- - Estimated concentration; implied low bias <() J - Not detected; associated reporting limit is estimated "--" - Not analyzed SIM - Selected Ion Monitoring DRO - Diesel Range Organics ORO - Motor Oil Range Organics 34-MW1 34-MW2 34-MW3 34-MW7D 34-MW7D 34-MW8 34-MW9 34-MW10 Goode Lake 34-MW1 34-MW2 34-MW3 34-MW7D FD-02 34-MW8 34-MW9 34-MW10 GOODE-LAKE 05/08/2024 05/08/2024 05/06/2024 05/08/2024 05/08/2024 05/09/2024 05/08/2024 05/08/2024 05/07/2024 Duplicate 205000 376000 418000 639000 643000 594000 308000 596000 -- 245000 156000 324000 445000 443000 397000 92800 663000 -- 3260 <50.0 3600 <50.0 <50.0 1180 <50.0 <50.0 -- 40800 91800 36300 97300 J-110000 J-31800 34000 J-47500 -- GHD 11183954-MEM-1825-Tbls.xlsx Page 1 of 1 Table 4 Qualified Sample Results Due to Holding Time Exceedance Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Holding Qualified Time Holding Sample Parameter Sample ID Criteria Time Analyte Results Units TPH 33-MW9 7 days 13 days Total Petroleum Hydrocarbons (C10-C28) DRO <22.2 J µg/L Total Petroleum Hydrocarbons (C28-C40) ORO <11.8 J µg/L Notes: <() J - Not detected; associated concentration is estimated TPH - Total Petroleum Hydrocarbons DRO - Diesel Range Organics ORO - Motor Oil Range Organics GHD 11183954-MEM-1825-Tbls.xlsx Page 1 of 1 Table 5 Qualified Sample Data Due to Outlying of Surrogate Recoveries Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Surrogate Control Limits Qualified Parameter Sample ID Surrogate % Recovery % Recovery Analyte Result Units VOCs 26-MW1 p-Bromofluorobenzene 132 77.0-126 cis-1,2-Dichloroethene 0.880 J µg/L TPH 33-MW4AA o-Terphenyl 621 52.0-156 Total Petroleum Hydrocarbons (C10-C28) DRO 469 J µg/L Total Petroleum Hydrocarbons (C28-C40) ORO 410 J+µg/L Notes: J - Estimated concentration J+- Estimated concentration; implied high bias VOCs - Volatile Organic Compounds TPH - Total Petroleum Hydrocarbons DRO - Diesel Range Organics ORO - Motor Oil Range Organics GHD 11183954-MEM-1825-Tbls.xlsx Page 1 of 1 Table 6 Qualified Sample Results Due to Outlying LCS/LCSD Results Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 LCS LCS LCSD Control Limits Associated Qualified Parameter Date Analyte % Recovery % Recovery RPD % Recovery RPD Sample ID Result Units (mm/dd/yyyy)(percent) SVOCs 05/10/2024 Pyrene 133 143 6.90 60.0-142 20 33-MW10FP 11.3 J+µg/L TPH 05/16/2024 Total Petroleum Hydrocarbons (C10-C28) DRO 112 88.7 23.3 50.0-150 20 33-MW12FP 31.4 J µg/L 33-MW4AA 469 J µg/L 05/17/2024 Total Petroleum Hydrocarbons (C10-C28) DRO 64.9 87.3 29.5 50.0-150 20 33-MP2 936 J µg/L 33-MW6FP 1130 J µg/L 33-MW5FP 65.2 J µg/L Notes: LCS - Laboratory Control Sample LCSD - Laboratory Control Sample Duplicate RPD - Relative Percent Difference J - Estimated concentration J+- Estimated concentration; implied high bias GHD 11183954-MEM-1825-Tbls.xlsx Page 1 of 1 Table 7 Qualified Sample Results Due to Outlying MS/MSD Results Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 MS MSD Control Limits Associated Qualified Parameter Sample ID Analyte % Recovery % Recovery RPD % Recovery RPD Sample IDs Result Units (percent) General Chemistry 34-MW7D Sulfate 49.5 39.3 3.55 80.0-120 15 34-MW9 34000 J-µg/L 34-MW7D 97300 J-µg/L FD-02 110000 J-µg/L 22A-MW1 21800 J-µg/L Notes: MS - Matrix Spike MSD - Matrix Spike Duplicate RPD - Relative Percent Difference J-- Estimated concentration; implied low bias GHD 11183954-MEM-1825-Tbls.xlsx Page 1 of 1 Table 8 Qualified Sample Data Due to Variability in Field Duplicate Results Biennial Sampling Event Union Pacific Railroad (UPRR) - SP Yard Ogden, Utah May 2024 Qualified Field Duplicate Qualified Parameter Analyte RPD Sample ID Result Sample ID Result Units TPH Total Petroleum Hydrocarbons (C10-C28) DRO 58.9 33-MW6FP 1340 J FD-01 2460 J µg/L Notes: RPD - Relative Percent Difference (i.e., >50% for waters/air or >100% for soils) J - Estimated concentration TPH - Total Petroleum Hydrocarbons DRO - Diesel Range Organics GHD 11183954-MEM-1825-Tbls.xlsx