DERR-2025-000519

ROD HARRISON LUST SITE
2023 ANNUAL
MONITORING REPORT

Uintah and Ouray Indian Reservation
Duchesne, Utah
Facility ID: R5040031

Revision 1.0
January 13, 2025

Submitted by:

Jennifer Davis Robinson, P.G. Date
Leaking Underground Storage Tank Unit

Approved by:

Gunnar Johnson Date
Permitting & Cleanup Section Supervisor
Land, Chemicals and Redevelopment Division

EPA Region 8
Leaking Underground Storage Tank Program

ii

EXECUTIVE SUMMARY

The Rod Harrison leaking underground storage tank (LUST) site (the Site) is in the town of
Duchesne, Utah, on Trust Land within the exterior boundaries of the Uintah & Ouray Indian
Reservation, at approximate decimal geographical coordinates of 40.164° north latitude and
110.401° west longitude in Township 4 South, Range 5 West in the southeast corner of the
northeast corner of Section 1. The Site’s physical address is 17 East Main Street, Duchesne,
Utah, located at the northeast corner of the intersection of North Center Street and East Main
Street (U.S. Highway 40).

This report summarizes groundwater data generated from measurements and laboratory
analysis of groundwater samples collected at the Site during the April 4, 2023 groundwater
monitoring event. Groundwater samples were collected by EPA Region 8 Leaking Underground
Storage Tank Program personnel. During the April 2023 event, samples were collected from
monitoring wells MW-1, MW-5, MW-6, MW-11, MW-13, MW-18R, and MW-19. Samples were
submitted to the Region 8 laboratory for analysis of benzene, toluene, ethylbenzene, xylenes,
1,2-dichloroethane, ethylene dibromide, methyl tert-butyl ether, total petroleum hydrocarbons
(TPH) in the gasoline and diesel ranges, and anions.

Contaminant concentrations in all on-site monitoring wells sampled during the April 2023
event were less than their respective maximum contaminant levels (MCLs). Only three of the
off-site wells (i.e. MW-14, MW-18R, and MW-19) were accessible for sampling, and these did
not contain any petroleum contaminant concentrations above MCLs.

Preliminary soil-vapor sample data from a July 2023 investigation suggest two areas of
contamination: one area of benzene contamination north of the northeast half of the Chuck’s
Meat building, and a second area of benzene and TPH contamination south of the Chuck’s Meat
building. The two areas correspond to locations of groundwater monitoring wells that have or
have historically had contaminant concentrations detected in groundwater. Once the soil-vapor
data is finalized, the Environmental Protection Agency intends to evaluate the data to
determine if additional sampling is warranted or if the Site is eligible for risk-based closure.

Past remedial actions have removed the contamination source at the Rod Harrison LUST site
and, based on the most recent analytical data, contaminant concentrations are stable or
decreasing. The EPA intends to conduct a statistical analysis of historical contaminant
concentrations at all wells within the monitoring well network with sufficient data and evaluate
the soil-vapor sampling data, once finalized. Based on results of the statistical analysis and the
soil-vapor investigation, the EPA will determine the next appropriate remedial actions. Until
statistical analyses are conducted and final results of the 2023 soil-vapor investigation can be
evaluated, the EPA will continue monitoring groundwater contamination at the Site.

iii

TABLE OF CONTENTS

Section Page

EXECUTIVE SUMMARY .................................................................................................................. ii
TABLE OF CONTENTS .................................................................................................................... iii
1.0 INTRODUCTION ....................................................................................................................... 1
2.0 FACILITY BACKGROUND .......................................................................................................... 1
3.0 FIELD ACTIVITIES ..................................................................................................................... 3
4.0 DEVIATIONS FROM THE QAPP ................................................................................................. 4
5.0 LABORATORY ANALYTICAL PROTOCOL .................................................................................... 4
6.0 DATA QUALITY ASSESSMENT................................................................................................... 4
7.0 SCREENING CRITERIA .............................................................................................................. 5
8.0 DATA PRESENTATION AND INTERPRETATION ......................................................................... 5
9.0 RECOMMENDATIONS .............................................................................................................. 7
10.0 REFERENCES .......................................................................................................................... 8

Figures

1 Site Location Map
2 Site Map
3 Groundwater Elevation Map, April 4, 2023
4 Dissolved Groundwater Contaminant Concentration Map, April 4, 2023

Tables

1 Summary of Groundwater Elevation Data
2 Summary of Groundwater Analytical Data

Appendices

A Groundwater Field Sampling Forms, April 4, 2023
B Laboratory Groundwater Analytical Report, April 4, 2023

1

1.0 INTRODUCTION
This report summarizes groundwater data generated during sample collection activities at the Rod
Harrison leaking underground storage tank (LUST) site (the Site) during the April 2023 groundwater
monitoring event. Groundwater samples were collected by the EPA Region 8 LUST Program personnel
from monitoring wells MW-1, MW-5, MW-6, MW-13, MW-14, MW-18R, and MW-19. In addition to
sample collection, groundwater levels and product levels (where present) were measured. Sampling
was performed to characterize site conditions, evaluate contaminant behavior, and evaluate potential
remediation strategies.
2.0 FACILITY BACKGROUND

The Rod Harrison LUST site is located at 17 East Main Street, Duchesne, Utah, on the northeast corner
of the intersection of North Center Street and East Main Street (U.S. Highway 40) (Figure 1), The Site is
located on Trust Land within the exterior boundaries of the Uintah & Ouray Indian Reservation at
approximate decimal coordinates of 40.164 degrees North latitude and 110.401 degrees West
longitude. The Site is located in Township 4 South, Range 5 West, in the southeast corner of the
northeast corner of Section 1.

Adjacent property usage is light commercial and retail. There is a one-story masonry structure located
on the site and a prefabricated, one-story wooden building that is used as a takeout barbeque
restaurant located immediately north of the masonry structure. The western portion of the masonry
structure is occupied by a butcher shop, and the eastern portion had been used as a garage, although
commercial auto maintenance is no longer performed in the building. The area to the south of the
masonry building along Highway 40 is paved with concrete, and the area north of the masonry
structure and east of the barbeque restaurant is a graded gravel lot that is used for parking and vehicle
storage.

The Site has about 70 feet of frontage road on the north side of U.S. Highway 40 (Main Street), an
undivided, four-lane road that serves as a regional east-west corridor. Several retail and commercial
businesses are located to the south, across Highway 40. The Duchesne River Inn is located to the west,
on the other side of North Center Street. Ground cover on the south side of the site (south of the
building) is concrete, with U.S. Highway 40 to the south. To the north, the lot is graded gravel, and
North Center Street, a paved asphalt roadway, is immediately west. The Duchesne River, a perennial
stream, is located about 1,100 feet to the northeast of the site and flows generally to the southeast.

The local, shallow subsurface sediments at the site consist primarily of silty sand, interbedded locally
with gravelly sand and layers of silty clay. Groundwater is relatively shallow at the Site, with measured
depth to water ranging from approximately 4.5 to 8 feet below ground surface (bgs). Groundwater
flow at the Site is generally to the southeast and may be locally influenced by utility corridors that
parallel Highway 40.

The Rod Harrison site history is based on information provided by the Utah Department of
Environmental Quality (UDEQ), Division of Environmental Response and Remediation (DERR). Records

2

indicate that the facility had four underground storage tanks (USTs) installed between 1961 and 1971.
Three of the tanks were used to store gasoline and one was used to store waste oil. The facility
operated as Rod’s Service, a retail gas station and automobile service shop, from 1961 until the station
closed in 1989. The tanks were removed by the owner, Mr. Vernal Bromley, in October 1995. The
property was later used as an auto repair shop, which is now inactive.

Petroleum contamination was discovered during the excavation and closure of the tanks on October
18, 1995. Heavy soil staining was observed during the tank removal. At that time, soil and groundwater
samples exceeded DERR Tier I screening levels. Subsurface investigations conducted by DERR in May
2004, November 2004, and most recently in October 2007, defined the extent of the petroleum
release. Investigation results suggested that most of the soil contamination was related to a release at
the former dispenser island. Contamination from the release was found to extend off site, beneath
Main Street and to several adjacent properties.

Despite multiple subsurface investigations, the full extent of soil contamination has not been fully
defined. After their subsurface investigations, DERR maintained a long-term groundwater monitoring
program at the Site. Their last groundwater monitoring event took place in August 2010. At that time,
free product was observed in monitoring wells MW-7, MW-8, MW-9R, and MW-10 at measured
thicknesses of 0.86-, 0.05-, 0.23-, and 0.01-foot, respectively. An enhanced fluids recovery effort was
launched in October 2010, which removed a total of 27 gallons of free product from the wells.
Reportedly, recharge of light nonaqueous phase liquid (LNAPL) was marginal after the October 2010
recovery event, and upon re-evaluation of the wells 24 hours after the recovery event, no LNAPL was
observed. The EPA took over the Site in 2012. Figure 2 shows the locations of site groundwater
monitoring wells installed by the DERR.

The EPA began periodic groundwater sampling at the Site in September 2013. Analytical results of
groundwater samples collected during the two monitoring events in 2016 indicate that the
groundwater contaminant plume generally extends east-southeast from the Site, subparallel to the
Duchesne River. The 2016 groundwater sample results showed MCL exceedances for benzene, and
concentrations exceeding the DERR Tier 1 Screening Levels for total petroleum hydrocarbons, gasoline
range (TPH-G) and total petroleum hydrocarbons, diesel range (TPH-D).

Monitoring wells MW-7, MW-8, MW-9R, MW-10, MW-15, MW-16 and MW-20 are located within the
traffic lanes of U.S. Highway 40. During the 2021 sampling event, each of these wells were located;
however, they had been paved over and/or damaged and were not safely accessible. These wells may
be intact but would require coring through the pavement and reinstalling the well vaults before they
could be included in the sampling program. With the exception of well MW-15, each of these wells had
historically been observed to contain free product and/or elevated contaminant levels . In addition to
the wells described above, the EPA has not been able to locate well MW-2 since taking over sample
collection in September 2013, and monitoring wells MW-17 and MW-18 were found damaged and no
longer suitable for sampling. Well MW-18 was replaced with new monitoring well MW-18R in
January of 2022. Additionally, MW-3 was unable to be located during the 2020 monitoring
event and monitoring well MW-11 was unable to be located during the 2022 monitoring

3

event. Neither well has been located since and both wells have been removed from the
sampling program.

LUST Trust Fund Eligibility

The Utah DERR determined that the Rod Harrison LUST site was eligible for federal LUST Trust funding.
Vernal Bromley owned the facility while his grandson, Rod Harrison, operated the facility. Mr. Bromley
closed the business in 1989 and removed the tanks in October 1995. The property was given to Mr.
Harrison in December 1995. Mr. Bromley subsequently passed away in February 1996. Rod Harrison
was initially evaluated for partial responsible party status as an operator; however, Mr. Harrison was
determined by UDEQ to have an inability to pay the characterization and remediation costs.
Subsequently, UDEQ determined that the site was not eligible for Utah’s Petroleum Tank Trust Fund,
but that it would be eligible for the use of federal LUST Trust Funds since it lies within the exterior
boundaries of the Uintah & Ouray Indian Reservation. As a result, DERR decided to transfer the site
lead to the EPA in September 2012.

3.0 FIELD ACTIVITIES
On April 4, 2023, the EPA Region 8 LUST Program personnel conducted groundwater monitoring
activities at the Rod Harrison LUST site. All monitoring activities were performed in accordance with
the EPA Region 8 Final Programmatic Quality Assurance Project Plan (QAPP) for Groundwater
Monitoring (EPA 2023). Depth to groundwater was measured and groundwater samples were collected
from monitoring wells MW-1, MW-5, MW-6, MW-13, MW-14, MW-18R, and MW-19 (Figure 2).

Prior to sample collection, depth to groundwater below the top of well casing was measured with an
interface probe to an accuracy of ±0.01-foot in all accessible site wells (EPA 2023). Free product was
not observed in any of the wells sampled. Measurements were recorded on the Groundwater Sampling
Field Forms (Appendix A).

Samples were collected using low-flow purging and sampling techniques using a peristaltic pump with
¼-inch new polyethylene tubing and silicone tubing in the pump head. Monitoring wells purged and
the water quality field parameters (i.e. conductivity, pH, temperature, dissolved oxygen (DO) and
oxidation-reduction potential (ORP)) measured at 3- to 5-minute intervals until measurements
indicated field parameter stabilization. Field parameters were considered stable once pH, DO, ORP,
and conductivity were within specified margins of error for three consecutive readings (EPA 2023).
Groundwater was sampled once the field parameters had stabilized by pumping directly into
laboratory-supplied bottles.

Groundwater samples were collected and submitted to the laboratory for analysis of the following
chemicals of concern (COCs): benzene, toluene, ethylbenzene, and xylenes (BTEX), methyl tert-butyl
ether (MTBE), napthalene, and 1,2-dichloroethane (1,2-DCA) via EPA Method 8260B; 1,2-
dibromomethane by EPA Method 8011B; and TPH-G and TPH-D via modified EPA Method 8015C. The
samples were collected and analyzed to evaluate the extent of contamination and contaminant

4

concentration trends. Following the collection of organic samples, alkalinity and sulfate samples were
collected for use in biodegradation evaluation. Samples were analyzed for alkalinity and sulfate by EPA
Methods 310.1 and 300.1, respectively.

Sample collection dates and times were recorded on the chain-of-custody records. Samples for COCs
were preserved according to the requirements of the Laboratory Services Request (LSR) and placed on
ice until arrival at the EPA Region 8 Laboratory. EPA personnel documented field activities in a
dedicated field logbook or on electronic data sheets using an iPad and followed all quality assurance
and quality control procedures described in the Programmatic QAPP for Groundwater Monitoring
(USEPA 2023).
4.0 DEVIATIONS FROM THE QAPP
Monitoring well MW-12 was unable to be located during the 2023 groundwater monitoring event and
was therefore not sampled. No other deviations from the Programmatic QAPP occurred during the
2023 field activities.

5.0 LABORATORY ANALYTICAL PROTOCOL
Samples were prepared, analyzed, and verified by the EPA Region 8 Laboratory according to the
requirements of the LSR and procedures found in the Laboratory Quality Management Plan and the
QAPP. Appendix B includes the laboratory reports containing chain-of-custody documents
corresponding to the April sampling event.

6.0 DATA QUALITY ASSESSMENT
All samples collected during the 2023 monitoring event were collected and analyzed according to
specified procedures. All laboratory data have been evaluated by an EPA Laboratory Quality Control
Officer using verification procedures and guidelines established in the EPA Region 8 Environmental
Laboratory Quality Assurance Manual (EPA 1999, 2023).

Field quality control (QC) samples were collected from wells during the 2023 sampling event.
Specifically, a primary and field duplicate sample pair were collected from monitoring well MW-13, and
a matrix spike and matrix spike duplicate (MS/MSD) sample pair was collected from monitoring well
MW-19. Laboratory QC parameters were all acceptable for the samples submitted. Table 2 summarizes
analytical data for the 2023 and previous sampling events, and the laboratory analytical report
(Appendix B) includes laboratory QC data for the 2023 sampling event.

Full data verification was completed on 100 percent of the analytical data. The complete verification
reports are presented in the laboratory report (Appendix B). The following summarizes quality issues
reported for the 2023 samples:
- TPH-D sample results corresponding to all samples were flagged “J” for “estimated” due to an
exceedance of holding time.
- TPH-G sample results corresponding to all samples were flagged “J” for “estimated” due to a
continuing calibration criteria failure (low).

5

Overall, laboratory analytical data for groundwater samples are valid and useable for all purposes. The
continued calibration error results in a loss of sensitivity of the instrument performing the analysis,
ultimately affecting the limits of quantitation; however, no limits of quantitation were elevated above
the regulatory screening levels utilized for this project. In instances where holding time was exceeded,
the primary sample results are biased low; however, for all affected results (i.e. TPH-D concentrations
at all wells), the measured concentrations observed during the current and prior three consecutive
years have been less than the applicable screening levels (discussed in Section 7.0) and the QC error is
considered inconsequential. Duplicate samples show normal variations and are qualitatively within
acceptable ranges of the investigative samples. The trip blanks contained undetectable levels for all
analytes.
7.0 SCREENING CRITERIA
The following regulatory criteria were used to screen the analytical results from the 2023 sampling
event:
- The Safe Drinking Water Act (SDWA) MCLs were used as the screening levels for BTEX, 1,2-DCA,
and dibromoethane (EDB) in groundwater.
- MTBE is a SDWA candidate compound, and the regional tapwater screening level of 14
micrograms per liter (µg/L) was used as the standard.
- There are no federally defined standards for TPH-G, TPH-D or naphthalene in groundwater, so
Utah’s Tier 1 Screening Levels for naphthalene (700 µg/L), and TPH-G and TPH-D (both 10,000
µg/L) were used as regulatory screening criteria.
- Sulfate levels are regulated under the SWDA as a secondary standard with a screening level of
250 µg/L.

Groundwater analytical data were compared to the above regulatory levels. Analytical data from this
event and from previous sampling events conducted by the EPA are provided in Table 2, along with
MCLs and the other relevant regulatory standards discussed in the previous paragraph. Groundwater
analytical results from the April 2023 event are presented on Figure 4.

8.0 DATA PRESENTATION AND INTERPRETATION
This section presents results from water level measurements and analytical samples collected during
the 2023 sampling event, as well as a summary of historical analytical data. The data presented in this
section was utilized to interpret the state of current contaminant plume conditions at the Site and to
develop recommendations for future efforts.
8.1 Groundwater Elevation and Flow Direction
Groundwater elevations were calculated using surveyed top-of-well casing (TOC) elevations from 2013
and 2023 depth-to-water measurements (Table 1). A groundwater potentiometric surface map was
generated for the April monitoring event (Figure 3). Groundwater elevations have fluctuated less than
2.7 feet (with the maximum fluctuation observed in well MW-13) since the EPA began monitoring in
2013. The average hydraulic gradient across the Site during the April 2023 event was approximately

6

0.00325 ft/ft. to the southeast. Based on the interpreted groundwater surface shown on Figure 3,
groundwater flow is generally to the southeast subparallel to the Duchesne River, located
approximately 1,000 feet northeast of the Site. However, local variations in flow direction and gradient
in the shallow groundwater system may occur and are likely associated with seasonal weather
variations and the permeability and spatial distribution of subsurface materials.
8.2 2023 Analytical Results
Analytical results from groundwater samples collected during the April 2023 sampling event were
compared to the screening levels presented in Section 7.0 (Table 2) (Figure 4). Based on the 2023
analytical results, no contaminants were detected in the sampled wells at concentrations greater than
the screening levels. However, the following contaminants were detected at concentrations less than
the screening levels at the wells indicated:
- Benzene at MW-18R;
- Ethylbenzene at MW-5, MW-6, and MW-18R;
- Naphthalene at MW-5;
- Total xylenes at MW-5 and MW-6;
- TPH-G at MW-5 and MW-18R; and,
- TPH-D at MW-18R.
8.3 Preliminary 2023 Soil Vapor Investigation Summary
In July 2023, EPA’s contractor conducted soil vapor sampling at the Rod Harrison LUST site and
surrounding areas to draw conclusions about vapor intrusion potential at buildings adjacent to the
contaminant groundwater plume and to better delineate the groundwater contaminant plume.
Preliminary analytical results of a soil vapor investigation were received in December 2024. These
preliminary soil vapor result maps indicate benzene ranging from nondetect to 285 nanograms (ng),
with the greatest concentrations detected north of the east half of the on-site building occupied by
Chuck’s Meat. A second benzene soil vapor hotspot is located south of Chuck’s Meat. Preliminary
results for TPH C5-C8 and TPH C9-C15 in soil vapor show an overlapping area of contamination south of
the Chuck’s Meat building, which also overlaps with benzene detections in soil vapor. The TPH C5-C8
and TPH C9-C15 soil vapor results in the identified soil vapor plume range from 59,700 to 241,000 ng
and from 17,500 to 97,100 ng, respectively.

As previously indicated, the data is preliminary. Additionally, the resulting data must be converted to
concentration data, typically presented in micrograms per cubic meter (mg/m3), which is calculated
using sample probe uptake rate at each sample point. Once final concentration data is received, it will
be evaluated against applicable screening levels by the Region 8 LUST staff and will be used to inform
remedial action decisions for the Site.
8.4 Interpretation
There were no contaminant detections greater than screening levels in wells MW-1, MW-5, MW-6,
MW-11, MW-13, MW18R, or MW-19 during the April 2023 sampling event. Since 2016, only low-level
exceedances of benzene (i.e. within one order of magnitude of the MCL of 5 µg/L) have been detected.

7

These exceedances occurred at MW-17 in 2016 at 7.6 µg/L, at MW-3 in 2019 at 6.6 µg/L, and at MW-
11 in 2022 at 5.4 µg/L. Notably, MW-3 is located in the hotspot identified by the 2023 soil-vapor
investigation, and MW-11 is located downgradient of MW-3, between the on-site buildings and the
adjacent parking lot (Figure 4). The location of well MW-11 did not correlate to soil vapor contaminant
hotspots.

As previously noted, 13 of the 20 monitoring wells at the Site have either been covered by asphalt
during Highway 40 paving operations and are missing or are damaged and unusable, leading to a
smaller spatial spread of data points and some uncertainty surrounding contaminant plume and LNAPL
migration. Of the damaged or missing wells, free product was historically observed in wells MW-7,
MW-8, MW-9R, and MW-10 in 2014. During the next monitoring event in 2016 neither MW-7 nor MW-
10 contained measurable product, and MW-8 and MW-9R could not be assessed because they were
paved over. Wells MW-7 and MW-10 were also paved over sometime between the 2016 and 2019
sampling events. Since free product was last observed in May 2014, it is unlikely that it still exists in this
area. Monitoring results at MW-18R (replacement well for MW-18), located downgradient of MW-10,
in both 2022 and 2023 support this idea, as free product has not been observed in this well and
analytical results have been below screening levels in both years.

Soil vapor data from the 2023 investigation indicated two primary areas of contamination: one area of
elevated benzene north of the east half of the Chuck’s Meat building and one area of elevated benzene
and TPH south of the Chuck’s Meat building. The elevated benzene results in soil vapor correspond to
the area where MW-2 and MW-3 were installed. Well MW-2 has not been located since 2013, when
the EPA took over sampling at the Site, but elevated concentrations of benzene exceeding the MCL at
MW-3 were detected in 2019. MW-3 has not been able to be located since 2019. The benzene and
TPH plume south of the building cover the area that includes monitoring wells MW-5 and MW-6,
where contamination (i.e. xylenes, ethylbenzene, and TPH-D) at concentrations less than screening
levels was detected in 2023. The heaviest contamination within the identified TPH and benzene
hotspot appears to be in the area of the former tanks, in the southwest corner of the Site.

9.0 RECOMMENDATIONS
Past remedial actions have removed the source of the contamination and, based on results of recent
groundwater monitoring events, contaminant concentrations in accessible wells are less than
applicable screening levels and are stable or decreasing. The EPA will perform statistical analysis, using
a Mann-Kendall or similar method, to confirm concentration trends in each well and to inform
remedial action decisions moving forward. Additionally, the EPA intends to evaluate the 2023 soil-
vapor concentration data, once finalized, to conclude if vapor intrusion poses a risk, if the Site requires
further soil-vapor sampling, or if the Site is a candidate for risk-based closure. Until these analyses and
evaluations can be conducted, the EPA will continue to investigate for residual contamination and
plume degradation just beyond the off-site boundary as part of the corrective action process in
anticipation of a risk-based site closure.

8

10.0 REFERENCES
EPA [Environmental Protection Agency]. 2023. Final Programmatic Quality Assurance Project Plan for
Groundwater Monitoring for Monitoring Period January 2023 to December 2027.

EPA. 1994. Office of Solid Waste and Emergency Response. Contract Laboratory Program National
Functional Guidelines for Organic Data Review. EPA 540/R94/012.

EPA. 1992. RCRA Ground Water Monitoring: Draft Technical Guidance. OSWER. EPA/530-R-93-001.

FIGURES

TABLES
Well Date Top of Casing
Elevation
(ft MSL)
Depth to
Product
(ft BTOC)
Depth to
Water
(ft BTOC)
Total Well
Depth
(ft BTOC)
Table 1. Groundwater Elevation Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
Apparent
Product
Thickness (ft)
Corrected
Groundwater
Elevation
(ft MSL)
MW-1 9/10/2013 5517.19 6.19 5511.00
MW-1 3/26/2014 5517.19 7.35 5509.84
MW-1 6/10/2014 5517.19 6.46 5510.73
MW-1 4/13/2016 5517.19 7.73 5509.46
MW-1 7/13/2016 5517.19 6.53 5510.66
MW-1 7/16/2019 5517.19 6.05 5511.14
MW-1 3/24/2021 5517.19 6.78 5510.41
MW-1 3/22/2022 5517.19 7.14 5510.05
MW-1 4/4/2023 5517.19 6.19 5511.00
MW-3 9/10/2013 5517.67 6.68 5510.99
MW-3 3/26/2014 5517.67 7.79 5509.88
MW-3 4/13/2016 5517.67 8.11 5509.56
MW-3 7/13/2016 5517.67 7.04 5510.63
MW-3 7/16/2019 5517.67 6.49 5511.18
MW-4 3/26/2014 5517.07 7.54 5509.53
MW-4 6/10/2014 5517.07 6.75 5510.32
MW-4 4/13/2016 5517.07 7.87 5509.20
MW-4 7/13/2016 5517.07 6.83 5510.24
MW-5 9/10/2013 5515.54 4.83 5510.71
MW-5 3/26/2014 5515.54 6.05 5509.49
MW-5 6/10/2014 5515.54 5.16 5510.38
MW-5 4/13/2016 5515.54 6.39 5509.15
MW-5 7/13/2016 5515.54 5.22 5510.32
MW-5 7/16/2019 5515.54 4.55 5510.99
MW-5 3/24/2021 5515.54 5.40 5510.14
Tuesday, February 13, 2024 Page 1 of 5
Well Date Top of Casing
Elevation
(ft MSL)
Depth to
Product
(ft BTOC)
Depth to
Water
(ft BTOC)
Total Well
Depth
(ft BTOC)
Table 1. Groundwater Elevation Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
Apparent
Product
Thickness (ft)
Corrected
Groundwater
Elevation
(ft MSL)
MW-5 3/22/2022 5515.54 5.80 5509.74
MW-5 4/4/2023 5515.54 4.74 5510.80
MW-6 9/10/2013 5515.18 4.73 5510.45
MW-6 3/26/2014 5515.18 5.90 5509.28
MW-6 4/13/2016 5515.18 6.24 5508.94
MW-6 7/13/2016 5515.18 5.13 5510.05
MW-6 7/16/2019 5515.18 5.32 5509.86
MW-6 3/24/2021 5515.18 5.27 5509.91
MW-6 3/22/2022 5515.18 5.68 5509.50
MW-6 4/4/2023 5515.18 4.60 5510.58
MW-7 3/26/2014 5515.41 5.80 7.18 1.38 5509.27
MW-7 6/10/2014 5515.41 4.98 6.16 1.18 5510.14
MW-7 4/13/2016 5515.41 4.43 5510.98
MW-8 3/26/2014 5514.91 6.20 6.35 0.15 5508.67
MW-8 6/10/2014 5514.91 4.98 6.16 1.18 5509.64
MW-10 3/26/2014 5514.92 5.89 7.12 1.23 5508.72
MW-10 6/10/2014 5514.92 5.25 5.78 0.53 5509.54
MW-10 4/13/2016 5514.92 4.71 5510.21
MW-11 9/10/2013 5515.64 5.26 5510.38
MW-11 3/26/2014 5515.64 6.63 5509.01
MW-11 6/10/2014 5515.64 5.56 5510.08
MW-11 4/13/2016 5515.64 6.67 5508.97
MW-11 7/13/2016 5515.64 5.64 5510.00
MW-11 7/16/2019 5515.64 5.01 5510.63
MW-11 3/24/2021 5515.64 5.78 5509.86
Tuesday, February 13, 2024 Page 2 of 5
Well Date Top of Casing
Elevation
(ft MSL)
Depth to
Product
(ft BTOC)
Depth to
Water
(ft BTOC)
Total Well
Depth
(ft BTOC)
Table 1. Groundwater Elevation Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
Apparent
Product
Thickness (ft)
Corrected
Groundwater
Elevation
(ft MSL)
MW-11 3/22/2022 5515.64 6.18 5509.46
MW-12 9/10/2013 5515.43 4.42 5511.01
MW-12 3/26/2014 5515.43 5.73 5509.70
MW-12 6/10/2014 5515.43 4.79 5510.64
MW-12 4/13/2016 5515.43 6.10 5509.33
MW-12 7/16/2019 5515.43 4.16 5511.27
MW-12 3/24/2021 5515.43 5.08 5510.35
MW-13 9/10/2013 5516.15 5.56 5510.59
MW-13 3/26/2014 5516.15 6.75 5509.40
MW-13 6/10/2014 5516.15 5.90 5510.25
MW-13 4/13/2016 5516.15 7.08 5509.07
MW-13 7/13/2016 5516.15 5.97 5510.18
MW-13 7/16/2019 5516.15 4.43 5511.72
MW-13 3/24/2021 5516.15 6.12 5510.03
MW-13 3/22/2022 5516.15 6.52 5509.63
MW-13 4/4/2023 5516.15 5.47 5510.68
MW-14 9/10/2013 5516.29 4.75 5511.54
MW-14 3/26/2014 5516.29 6.28 5510.01
MW-14 6/10/2014 5516.29 5.21 5511.08
MW-14 4/13/2016 5516.29 6.70 5509.59
MW-14 7/13/2016 5516.29 5.32 5510.97
MW-14 7/16/2019 5516.29 4.57 5511.72
MW-14 3/24/2021 5516.29 5.59 5510.70
MW-14 3/22/2022 5516.29 6.01 5510.28
MW-14 4/4/2023 5516.29 4.85 5511.44
Tuesday, February 13, 2024 Page 3 of 5
Well Date Top of Casing
Elevation
(ft MSL)
Depth to
Product
(ft BTOC)
Depth to
Water
(ft BTOC)
Total Well
Depth
(ft BTOC)
Table 1. Groundwater Elevation Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
Apparent
Product
Thickness (ft)
Corrected
Groundwater
Elevation
(ft MSL)
MW-15 3/26/2014 5515.47 6.29 5509.18
MW-15 6/10/2014 5515.47 5.39 5510.08
MW-16 3/26/2014 5513.99 6.14 5507.85
MW-16 6/10/2014 5513.99 5.46 5508.53
MW-16 4/13/2016 5513.99 6.38 5507.61
MW-17 9/10/2013 5514.07 5.80 5508.27
MW-17 3/26/2014 5514.07 6.70 5507.37
MW-17 6/10/2014 5514.07 6.09 5507.98
MW-17 4/13/2016 5514.07 6.89 5507.18
MW-17 7/13/2016 5514.07 6.22 5507.85
MW-17 7/16/2019 5514.07 5.38 5508.69
MW-18 9/10/2013 5514.43 4.90 5509.53
MW-18 3/26/2014 5514.43 6.32 5508.11
MW-18 6/10/2014 5514.43 5.60 5508.83
MW-18 4/13/2016 5514.43 6.52 5507.91
MW-18R 3/22/2022 5514.60 5.95 5508.65
MW-18R 4/4/2023 5514.60 4.80 5509.80
MW-19 9/10/2013 5514.58 5.59 5508.99
MW-19 3/26/2014 5514.58 6.49 5508.09
MW-19 6/10/2014 5514.58 5.84 5508.74
MW-19 4/13/2016 5514.58 6.71 5507.87
MW-19 7/13/2016 5514.58 5.92 5508.66
MW-19 7/16/2019 5514.58 5.08 5509.50
MW-19 3/24/2021 5514.58 5.81 5508.77
MW-19 3/22/2022 5514.58 6.22 5508.36
Tuesday, February 13, 2024 Page 4 of 5
Well Date Top of Casing
Elevation
(ft MSL)
Depth to
Product
(ft BTOC)
Depth to
Water
(ft BTOC)
Total Well
Depth
(ft BTOC)
Table 1. Groundwater Elevation Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
Apparent
Product
Thickness (ft)
Corrected
Groundwater
Elevation
(ft MSL)
MW-19 4/4/2023 5514.58 4.96 5509.62
MW-20 3/26/2014 5515.45 6.00 5509.45
MW-20 6/10/2014 5515.45 5.64 5509.81
Notes:
ft = feet
BTOC = below top of casing
MSL = mean sea level
If LNAPL was measured, the groundwater elevation was corrected using an LNAPL specific gravity of 0.75
Tuesday, February 13, 2024 Page 5 of 5
Well Date Benzene Ethyl Benzene Toluene Total Xylenes Methyl tert-
Butyl Ether
Naphthalene*1,2-Dichloroethane 1,2-Dibromoethane TPH-G TPH-D Alkalinity
(mg/L)
Sulfate
(mg/L)
Screening Level
Screening Level Source
700 µg/L
MCL
1000 µg/L
MCL
10000 µg/L
MCL
14 µg/L
USEPA RSL
700 µg/L
State*
5 µg/L
MCL
0.05 µg/L
MCL
10000 µg/L
State*
10000 µg/L
State*
NA
NA
250 mg/L
SMCL
5 µg/L
MCL
Table 2. Groundwater Concentration Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
MW-1 7/16/2019 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <0.010 <40.0 <400 488 364
MW-1 3/24/2021 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 <400 418 372
MW-1 3/22/2022 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 537 J 423 384
MW-1 4/4/2023 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 J <400 J 405 383
MW-3 7/16/2019 6.6 <1.0 <1.0 <3 <1.0 <1.0 <0.010 <40.0 460 475 425
MW-5 7/16/2019 <2.0 29.0 <2.0 24.6 <2.0 4.6 <0.010 611 J 428 577 317
MW-5 3/24/2021 <2.0 22.4 <2.0 22.9 <2.0 <2.0 <2.0 <0.010 244 457 480 413
MW-5 3/22/2022 <2.0 22.9 <2.0 20.9 <2.0 <2.0 <2.0 <0.010 431 J 696 J 492 379
MW-5 4/4/2023 <2.0 10.6 <2.0 20.7 <2.0 3.4 <2.0 <0.010 282 J <400 J 451 437
MW-5-DUP 3/24/2021 <2.0 41.0 <2.0 105.3 <2.0 5.2 <2.0 <0.010 738 687 493 414
MW-6 7/16/2019 <1.0 1.8 <1.0 <3 <1.0 1.2 <0.010 137 J 407 529 393
MW-6 3/22/2022 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 527 J 460 432
MW-6 4/4/2023 <1.0 1.6 <1.0 2.2 <1.0 <1.0 <1.0 <0.010 <100 J <400 J 459 439
MW-6-DUP 3/22/2022 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 <400 459 433
MW-7 7/16/2019 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <0.010 50.6 J <400 547 349
MW-7-DUP 7/16/2019 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <0.010 50.4 J <400 547 350
MW-11 7/16/2019 <1.0 6.1 <1.0 12.6 <1.0 7.0 <0.010 539 J 720 564 418
MW-11 3/22/2022 5.4 <1.0 <1.0 2 <1.0 <5.0 <1.0 <0.010 <100 <400 J 442 434
MW-12 7/16/2019 <1.0 1.6 1.0 <3 <1.0 2.1 <0.010 476 J 403 621 250
MW-12 3/24/2021 <1.0 25.2 <1.0 <3 <1.0 <1.0 <1.0 <0.010 792 663 670 223
MW-13 3/24/2021 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 J <0.010 <100 <400 418 413
MW-13 3/22/2022 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 548 J 431 406
MW-13 4/4/2023 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 J <400 J 430 425
MW-13 DUP 4/4/2023 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 J <400 J 429 426
MW-14 7/16/2019 1.3 <1.0 <1.0 <3 <1.0 <1.0 <0.010 <40.0 <400 523 304
Page 1 of 2
Well Date Benzene Ethyl Benzene Toluene Total Xylenes Methyl tert-
Butyl Ether
Naphthalene 1,2-Dichloroethane 1,2-Dibromoethane TPH-G TPH-D Alkalinity
(mg/L)
Sulfate
(mg/L)
Screening Level
Screening Level Source
700 µg/L
MCL
1000 µg/L
MCL
10000 µg/L
MCL
14 µg/L
USEPA RSL
700 µg/L
USEPA RSL
5 µg/L
MCL
0.05 µg/L
MCL
10000 µg/L
State
10000 µg/L
State
NA
NA
250 mg/L
SMCL
5 µg/L
MCL
Table 2. Groundwater Concentration Data
Rod Harrison Leaking Underground Storage Tank Site #5040031, Duchesne, UT
MW-14 4/4/2023 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 J <400 J 446 379
MW-18R 3/22/2022 4.8 5.2 <1.0 <3 <1.0 <1.0 <1.0 <0.010 250 J 1020 J 713 85.9
MW-18R 4/4/2023 3.3 2.2 <1.0 <3 <1.0 <1.0 <1.0 <0.010 134 J 805 J 778 152
MW-19 7/16/2019 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <0.010 <40.0 <400 460 114
MW-19 3/24/2021 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 <400 354 116
MW-19 3/22/2022 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 <400 J 398 101
MW-19 4/4/2023 <1.0 <1.0 <1.0 <3 <1.0 <1.0 <1.0 <0.010 <100 J <400 J 430 131
Notes:
Page 2 of 2
All values reported in micrograms per liter (µg/L) unless otherwise indicated.
Values above MCL or other applicable screening level reported in bold.
J = estimated value
MCL = maximum contaminant level
mg/L = milligrams per liter
NA = not analyzed or not applicable
RSL = US EPA Regional Screening Level (Tapwater)
TPH = total petroleum hydrocarbons as gasoline range (TPH-G) or diesel range (TPH-D)
SMCL = secondary MCL
*State screening level source is the Utah Tier I Screening Criteria for TPH-gasoline and diesel, and
the Utah Initial Screening Level for naphthalene (November 2005).

APPENDIX A
Groundwater Field Sampling Forms

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 27
Purge Data
Well ID: MW-1 Casing Diameter (in.): 1.5 Depth to Water (ft BTOC): 6.19
Total Well Depth (ft BTOC): 15 Water Column (ft): 8.81 Casing Volume (gallons): 0.81
Pump Depth (ft BTOC): 10.6 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.1
Sampling Data
Sample Date: April 4, 2023
Sample Time: 12:30
Odor:
QA/QC Samples Collected:
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 28
Purge Data
Well ID: MW-5 Casing Diameter (in.): 1.5 Depth to Water (ft BTOC): 4.74
Total Well Depth (ft BTOC): 15 Water Column (ft): 10.26 Casing Volume (gallons): 0.94
Pump Depth (ft BTOC): 9.9 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.1
Sampling Data
Sample Date: April 4, 2023
Sample Time: 12:45
Odor:
QA/QC Samples Collected:
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 28
Purge Data
Well ID: MW-6 Casing Diameter (in.): 1.5 Depth to Water (ft BTOC): 4.6
Total Well Depth (ft BTOC): 15 Water Column (ft): 10.4 Casing Volume (gallons): 0.95
Pump Depth (ft BTOC): 9.8 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.1
Sampling Data
Sample Date: April 4, 2023
Sample Time: 13:05
Odor:
QA/QC Samples Collected:
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 28
Purge Data
Well ID: MW-13 Casing Diameter (in.): 1.5 Depth to Water (ft BTOC): 5.47
Total Well Depth (ft BTOC): 15 Water Column (ft): 9.53 Casing Volume (gallons): 0.87
Pump Depth (ft BTOC): 10.2 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.1
Sampling Data
Sample Date: April 4, 2023
Sample Time: 12:53
Odor:
QA/QC Samples Collected: Duplicate
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 27
Purge Data
Well ID: MW-14 Casing Diameter (in.): 2 Depth to Water (ft BTOC): 4.85
Total Well Depth (ft BTOC): 15 Water Column (ft): 10.15 Casing Volume (gallons): 1.66
Pump Depth (ft BTOC): 9.9 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.2
Sampling Data
Sample Date: April 4, 2023
Sample Time: 12:35
Odor: None
QA/QC Samples Collected:
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 28
Purge Data
Well ID: MW-18R Casing Diameter (in.): 2 Depth to Water (ft BTOC): 4.8
Total Well Depth (ft BTOC): 20 Water Column (ft): 15.2 Casing Volume (gallons): 2.48
Pump Depth (ft BTOC): 12.4 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.1
Sampling Data
Sample Date: April 4, 2023
Sample Time: 14:25
Odor:
QA/QC Samples Collected:
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

U.S. Environmental Protection Agency
Region 8 – Leaking Underground Storage Tank Program
Groundwater Sampling Field Form
Submitted By: jfitzgib_EPA
Submitted Time: April 5, 2023 5:12 AM
Site Name: Rod Harrison
Reservation: Uintah & Ouray Indian Reservation
Date: April 4, 2023
Sampler(s): Jeff Fitzgibbons, Patrick Juancorena, Andy Woodward
Location: Duchesne
Weather: Clouds Temperature (°F): 27
Purge Data
Well ID: MW-19 Casing Diameter (in.): 2 Depth to Water (ft BTOC): 4.96
Total Well Depth (ft BTOC): 20 Water Column (ft): 15.04 Casing Volume (gallons): 2.45
Pump Depth (ft BTOC): 12.5 Sampling Type: Low Flow Purge Device: Peristaltic Pump

Water Quality Meter: YSI 556 MPS S/N 05D2374AL Property Tag# B00591

Stabilization Parameters
Time Water Temp (°C) Dissolved O2
(mg/L)
pH (s.u.) Conductivity
(µS/cm)
ORP (mV)
Total Volume Purged (gal): 0.1
Sampling Data
Sample Date: April 4, 2023
Sample Time: 14:07
Odor:
QA/QC Samples Collected: MS/MSD
Comments:
Sample Analysis:
• BTEX/MTBE TPH-GRO (EPA 8260B/8015C)
• TPH-DRO (EPA 8015C)
• 1,2-dibromoethane (EPA 8011B)
• Alkalinity (EPA 310.1)
• Sulfate as SO4 (EPA 300.1)
Sampler Signature

APPENDIX B
Laboratory Analytical Report

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 8 LABORATORY
1 Denver Federal Center
Building 25, Entrance E-3
Lakewood, CO 80225
R08-LSASD-LSB
MEMORANDUM
SUBJECT:Analytical Results for Rod Harrison / 2304004
FROM:David Nguyen, Organic Chemist
Jesse Kiernan, Organic Chemist
Kenneth Dahlin, Analytical Chemist
Jason Nakatsu, Laboratory Services Branch Manager (Acting)
TO:Patrick Juancorena, R08-LCRD-R8
Leaking Underground Storage Tank/UST
Attached are the analytical results for Rod Harrison 2304004.
The table below shows the number of containers received, the work order number(s) assigned by the lab
and the date received:
44 4406-Apr-2023
Total2304004
The above samples were prepared and analyzed by the EPA Region 8 Laboratory according to the
requirements of the Laboratory Services Request (LSR) and the procedures referenced in the laboratory
Quality Assurance Manual (QSP-001 v2.1).
The laboratory will dispose of the tested water samples two months after the date on this final report.
If the samples need to be retained for longer than two months, please email [e-mail].
Page 1 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
General Notes :
Quality Control pages: These pages list the routine QC results such as blanks, matrix spikes, and laboratory duplicates,
etc. The QC results shown may not be applicable and may not affect the data usability.
Appendix A - Exceptions Report: This section may be blank. It lists deviations from acceptable sample receipt
conditions, field measurement QC criteria, holding times, or QC acceptance criteria.
Appendix B - Samples and Analysis: This section summarizes the number of samples received, the analysis performed
and the method employed.
Appendix C - Data Assessment Guidelines: This table summarizes the guidelines used by the Region 8 Laboratory to
qualify data. This is a general table and may or may not be applicable to this project.
Other issues experienced during the analysis: This section (below) may be blank. It's a place where the analysts can
explain any issues experienced during the analysis and/or sampling. The issues listed in Appendix A are generally not
covered below because it would be redundant to do so. All sample results were reported on an as-received basis unless
noted in this section.
Other issues experienced during the analysis ( narrative ):
METHOD: Determination of Diesel Range Organics using EPA Method 8015D Modified (SOP ORGM-508)
ANALYST(S): J. Kiernan
Analysis Notes:
The holding times for DRO were exceed for all samples in this project due to a lack of adequate laboratory personell to
handle the work load.
Page 2 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Page 3 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Inorganic Chemistry Parameters
MW-1Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:30
Matrix:WaterComment:
2304004Workorder
2304004-01 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234055
Sulfate as SO4 30.0 DNmg/L 2300096EPA 300.0 05/01/202338310
MW-14Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:35
Matrix:WaterComment:
2304004Workorder
2304004-02 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234465
Sulfate as SO4 30.0 DNmg/L 2300096EPA 300.0 05/02/202337910
MW-5Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:45
Matrix:WaterComment:
2304004Workorder
2304004-03 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234515
Sulfate as SO4 30.0 DNmg/L 2300096EPA 300.0 05/02/202343710
MW-13Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-04 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234305
Sulfate as SO4 30.0 DNmg/L 2300096EPA 300.0 05/02/202342510
MW-13 DUPStation ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-05 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234295
Sulfate as SO4 30.0 DNmg/L 2300096EPA 300.0 05/02/202342610
Page 4 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Inorganic Chemistry Parameters
MW-6Station ID:Date / Time Sampled:
Lab Number:
04/04/23 13:05
Matrix:WaterComment:
2304004Workorder
2304004-06 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234595
Sulfate as SO4 30.0 DNmg/L 2300096EPA 300.0 05/02/202343910
MW-19Station ID:Date / Time Sampled:
Lab Number:
04/04/23 14:07
Matrix:WaterComment:
2304004Workorder
2304004-07 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20234305
Sulfate as SO4 3.00 DNmg/L 2300096EPA 300.0 05/02/20231311
MW-18RStation ID:Date / Time Sampled:
Lab Number:
04/04/23 14:25
Matrix:WaterComment:
2304004Workorder
2304004-08 D
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Alkalinity 25.0 KEDmg/L 2300038EPA 310.1 04/11/20237785
Sulfate as SO4 3.00 DNmg/L 2300096EPA 300.0 05/02/20231521
Page 5 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
EDB and DBCP by EPA Method 8011
MW-1Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:30
Matrix:WaterComment:
2304004Workorder
2304004-01 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
MW-14Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:35
Matrix:WaterComment:
2304004Workorder
2304004-02 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
MW-5Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:45
Matrix:WaterComment:
2304004Workorder
2304004-03 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
MW-13Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-04 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
MW-13 DUPStation ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-05 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
Page 6 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
EDB and DBCP by EPA Method 8011
MW-6Station ID:Date / Time Sampled:
Lab Number:
04/04/23 13:05
Matrix:WaterComment:
2304004Workorder
2304004-06 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
MW-19Station ID:Date / Time Sampled:
Lab Number:
04/04/23 14:07
Matrix:WaterComment:
2304004Workorder
2304004-07 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
MW-18RStation ID:Date / Time Sampled:
Lab Number:
04/04/23 14:25
Matrix:WaterComment:
2304004Workorder
2304004-08 B
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromo-3-chloropropane 0.010
JAKug/L 2300048EPA 8011 04/19/2023< 0.010 11,2-Dibromoethane 0.010
Page 7 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
TVPH/BTEX/MTBE/Naphthalene by GC/MS
MW-1Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:30
Matrix:WaterComment:
2304004Workorder
2304004-01 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2,4-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Benzene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Ethyl Benzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 1m,p-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
JAKug/L 23000428260/8015 04/14/2023< 100 1TPH as Gasoline 100J
Surrogate: 4-Bromofluorobenzene Limit 70-13097.1 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-130102 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-13098.9 %JAK 230004204/14/20231
MW-14Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:35
Matrix:WaterComment:
2304004Workorder
2304004-02 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2,4-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Benzene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Ethyl Benzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 1m,p-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
JAKug/L 23000428260/8015 04/14/2023< 100 1TPH as Gasoline 100J
Surrogate: 4-Bromofluorobenzene Limit 70-13097.3 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-13097.2 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-130100 %JAK 230004204/14/20231
Page 8 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
TVPH/BTEX/MTBE/Naphthalene by GC/MS
MW-5Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:45
Matrix:WaterComment:
2304004Workorder
2304004-03 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
1,2,4-Trimethylbenzene 2.0 JAKug/L 23000428260/8015 04/14/202321.0 2
JAKug/L 23000428260/8015 04/14/2023< 2.0 21,2-Dichloroethane 2.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 21,3,5-Trimethylbenzene 2.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 2Benzene2.0
Ethyl Benzene 2.0 JAKug/L 23000428260/8015 04/14/202310.6 2
m,p-Xylene 4.0 JAKug/L 23000428260/8015 04/14/202320.7 2
JAKug/L 23000428260/8015 04/14/2023< 2.0 2Methyl tert-Butyl Ether 2.0
Naphthalene 2.0 JAKug/L 23000428260/8015 04/14/20233.4 2
JAKug/L 23000428260/8015 04/14/2023< 2.0 2o-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 2Toluene2.0
TPH as Gasoline 200 JAKug/L 23000428260/8015 04/14/20232822J
Surrogate: 4-Bromofluorobenzene Limit 70-13099.7 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-130100 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-130100 %JAK 230004204/14/20231
MW-13Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-04 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
1,2,4-Trimethylbenzene 1.0 JAKug/L 23000428260/8015 04/14/20231.3 1
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Benzene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Ethyl Benzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 1m,p-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
JAKug/L 23000428260/8015 04/14/2023< 100 1TPH as Gasoline 100J
Surrogate: 4-Bromofluorobenzene Limit 70-130100 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-130102 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-130100 %JAK 230004204/14/20231
Page 9 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
TVPH/BTEX/MTBE/Naphthalene by GC/MS
MW-13 DUPStation ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-05 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
1,2,4-Trimethylbenzene 1.0 JAKug/L 23000428260/8015 04/14/20231.3 1
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Benzene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Ethyl Benzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 1m,p-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
JAKug/L 23000428260/8015 04/14/2023< 100 1TPH as Gasoline 100J
Surrogate: 4-Bromofluorobenzene Limit 70-13098.9 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-13099.7 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-130101 %JAK 230004204/14/20231
MW-6Station ID:Date / Time Sampled:
Lab Number:
04/04/23 13:05
Matrix:WaterComment:
2304004Workorder
2304004-06 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
1,2,4-Trimethylbenzene 1.0 JAKug/L 23000428260/8015 04/14/20231.0 1
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Benzene1.0
Ethyl Benzene 1.0 JAKug/L 23000428260/8015 04/14/20231.6 1
m,p-Xylene 2.0 JAKug/L 23000428260/8015 04/14/20232.2 1
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
JAKug/L 23000428260/8015 04/14/2023< 100 1TPH as Gasoline 100J
Surrogate: 4-Bromofluorobenzene Limit 70-13097.1 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-130100 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-130101 %JAK 230004204/14/20231
Page 10 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
TVPH/BTEX/MTBE/Naphthalene by GC/MS
MW-19Station ID:Date / Time Sampled:
Lab Number:
04/04/23 14:07
Matrix:WaterComment:
2304004Workorder
2304004-07 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2,4-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Benzene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Ethyl Benzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 2.0 1m,p-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
JAKug/L 23000428260/8015 04/14/2023< 100 1TPH as Gasoline 100J
Surrogate: 4-Bromofluorobenzene Limit 70-13097.8 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-13099.9 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-130100 %JAK 230004204/14/20231
MW-18RStation ID:Date / Time Sampled:
Lab Number:
04/04/23 14:25
Matrix:WaterComment:
2304004Workorder
2304004-08 A
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2,4-Trimethylbenzene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,2-Dichloroethane 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 11,3,5-Trimethylbenzene 1.0
Benzene 1.0 JAKug/L 23000428260/8015 04/14/20233.3 1
Ethyl Benzene 1.0 JAKug/L 23000428260/8015 04/14/20232.2 1
JAKug/L 23000428260/8015 04/14/2023< 2.0 1m,p-Xylene 2.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Methyl tert-Butyl Ether 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Naphthalene1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1o-Xylene 1.0
JAKug/L 23000428260/8015 04/14/2023< 1.0 1Toluene1.0
TPH as Gasoline 100 JAKug/L 23000428260/8015 04/14/20231341J
Surrogate: 4-Bromofluorobenzene Limit 70-130101 %JAK 230004204/14/20231
Surrogate: Dibromofluoromethane Limit 70-13095.9 %JAK 230004204/14/20231
Surrogate: Toluene-d8 Limit 70-13099.9 %JAK 230004204/14/20231
Page 11 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Extractable Petroleum Hydrocarbons by 8015 DRO
MW-1Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:30
Matrix:WaterComment:
2304004Workorder
2304004-01 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14077.7 %JAK 230005605/05/20231
MW-14Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:35
Matrix:WaterComment:
2304004Workorder
2304004-02 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14075.5 %JAK 230005605/05/20231
MW-5Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:45
Matrix:WaterComment:
2304004Workorder
2304004-03 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14069.5 %JAK 230005605/05/20231
MW-13Station ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-04 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14083.0 %JAK 230005605/05/20231
MW-13 DUPStation ID:Date / Time Sampled:
Lab Number:
04/04/23 12:53
Matrix:WaterComment:
2304004Workorder
2304004-05 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14085.1 %JAK 230005605/05/20231
Page 12 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Extractable Petroleum Hydrocarbons by 8015 DRO
MW-6Station ID:Date / Time Sampled:
Lab Number:
04/04/23 13:05
Matrix:WaterComment:
2304004Workorder
2304004-06 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14077.5 %JAK 230005605/05/20231
MW-19Station ID:Date / Time Sampled:
Lab Number:
04/04/23 14:07
Matrix:WaterComment:
2304004Workorder
2304004-07 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
JAKug/L 2300056EPA 8015 05/05/2023< 400 1Diesel range organics 400J
Surrogate: o-Terphenyl Limit 60-14083.0 %JAK 230005605/05/20231
MW-18RStation ID:Date / Time Sampled:
Lab Number:
04/04/23 14:25
Matrix:WaterComment:
2304004Workorder
2304004-08 C
Parameter UnitsResults
Qual-
ifier
Report
Limit Analyzed BatchMethodBy
Dilution
Factor
Diesel range organics 400 JAKug/L 2300056EPA 8015 05/05/20238051J
Surrogate: o-Terphenyl Limit 60-14082.8 %JAK 230005605/05/20231
Note: "J" Qualifier indicates an estimated value.
Page 13 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - Inorganic Chemistry Parameters
Batch 2300038 - Default Prep GenChem
Method Blank (2300038-BLK1)Prepared & Analyzed: 04/10/23
Alkalinity mg/L5.00< 5.00
Duplicate (2300038-DUP4)Prepared: 04/10/23 Analyzed: 04/11/23 Source: 2304004-05
Alkalinity mg/L25.0 200.279430429
Reference (2300038-SRM1)Prepared & Analyzed: 04/10/23
Alkalinity mg/L5.00 86.4 85-11599.986.3
Batch 2300096 - Filter thru 0.45
Method Blank (2300096-BLK1)Prepared & Analyzed: 05/01/23
Sulfate as SO4 mg/L3.00< 3.00
Method Blank Spike (2300096-BS1)Prepared & Analyzed: 05/01/23
Sulfate as SO4 mg/L3.00 60.0 90-11010261.4
Duplicate (2300096-DUP3)Prepared: 05/01/23 Analyzed: 05/02/23 Source: 2304004-07
Sulfate as SO4 mg/L3.00 200.150131131
Matrix Spike (2300096-MS3)Prepared: 05/01/23 Analyzed: 05/02/23 Source: 2304004-07
Sulfate as SO4 mg/L3.00 60.0 80-12081.0179131
Matrix Spike Dup (2300096-MSD3)Prepared: 05/01/23 Analyzed: 05/02/23 Source: 2304004-07
Sulfate as SO4 mg/L3.00 60.0 2080-12081.2 0.0665180131
Reference (2300096-SRM1)Prepared & Analyzed: 05/01/23
Sulfate as SO4 mg/L3.00 100 80-120102102
Page 14 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - EDB and DBCP by EPA Method 8011
Batch 2300048 - Default Prep GC-Semi
Method Blank (2300048-BLK1)Prepared: 04/17/23 Analyzed: 04/18/23
1,2-Dibromo-3-chloropropane ug/L0.010< 0.010
1,2-Dibromoethane "0.010< 0.010
Method Blank (2300048-BLK2)Prepared: 04/17/23 Analyzed: 04/18/23
1,2-Dibromo-3-chloropropane ug/L0.010< 0.010
1,2-Dibromoethane "0.010< 0.010
Method Blank Spike (2300048-BS1)Prepared: 04/17/23 Analyzed: 04/18/23
1,2-Dibromo-3-chloropropane ug/L0.010 0.100 70-1301150.115
1,2-Dibromoethane "0.010 0.100 70-1301100.110
Method Blank Spike (2300048-BS2)Prepared: 04/17/23 Analyzed: 04/18/23
1,2-Dibromo-3-chloropropane ug/L0.010 0.100 70-1301120.112
1,2-Dibromoethane "0.010 0.100 70-1301100.110
Matrix Spike (2300048-MS4)Prepared: 04/17/23 Analyzed: 04/19/23 Source: 2304004-07
1,2-Dibromo-3-chloropropane ug/L0.010 0.100 70-13097.00.097 < 0.010
1,2-Dibromoethane "0.010 0.100 70-1301030.103 < 0.010
Matrix Spike Dup (2300048-MSD4)Prepared: 04/17/23 Analyzed: 04/19/23 Source: 2304004-07
1,2-Dibromo-3-chloropropane ug/L0.010 0.100 2570-13095.0 2.080.095 < 0.010
1,2-Dibromoethane "0.010 0.100 2570-130102 0.9760.102 < 0.010
Trip Blank (2304004-11)Prepared: 04/17/23 Analyzed: 04/19/23
1,2-Dibromo-3-chloropropane ug/L0.010< 0.010
1,2-Dibromoethane "0.010< 0.010
Holding Blank (2304004-12)Prepared: 04/17/23 Analyzed: 04/19/23
1,2-Dibromo-3-chloropropane ug/L0.010< 0.010
1,2-Dibromoethane "0.010< 0.010
Page 15 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - TVPH/BTEX/MTBE/Naphthalene by GC/MS
Batch 2300042 - EPA 5030B-R8
Method Blank (2300042-BLK1)Prepared: 04/13/23 Analyzed: 04/14/23
1,2,4-Trimethylbenzene ug/L1.0< 1.0
1,2-Dichloroethane "1.0< 1.0
1,3,5-Trimethylbenzene "1.0< 1.0
Benzene "1.0< 1.0
Ethyl Benzene "1.0< 1.0
m,p-Xylene "2.0< 2.0
Methyl tert-Butyl Ether "1.0< 1.0
Naphthalene "1.0< 1.0
o-Xylene "1.0< 1.0
Toluene "1.0< 1.0
TPH as Gasoline "100< 100
"10.0 70-130Surrogate: 4-Bromofluorobenzene 10010.0
"10.0 70-130Surrogate: Dibromofluoromethane 99.49.94
"10.0 70-130Surrogate: Toluene-d8 10010.0
Method Blank (2300042-BLK2)Prepared: 04/13/23 Analyzed: 04/14/23
1,2,4-Trimethylbenzene ug/L1.0< 1.0
1,2-Dichloroethane "1.0< 1.0
1,3,5-Trimethylbenzene "1.0< 1.0
Benzene "1.0< 1.0
Ethyl Benzene "1.0< 1.0
m,p-Xylene "2.0< 2.0
Methyl tert-Butyl Ether "1.0< 1.0
Naphthalene "1.0< 1.0
o-Xylene "1.0< 1.0
Toluene "1.0< 1.0
TPH as Gasoline "100< 100
"10.0 70-130Surrogate: 4-Bromofluorobenzene 10110.1
"10.0 70-130Surrogate: Dibromofluoromethane 10110.1
"10.0 70-130Surrogate: Toluene-d8 10010.0
Page 16 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - TVPH/BTEX/MTBE/Naphthalene by GC/MS
Batch 2300042 - EPA 5030B-R8
Method Blank Spike (2300042-BS1)Prepared: 04/13/23 Analyzed: 04/14/23
TPH as Gasoline ug/L100 800 70-13073.4587
"10.0 70-130Surrogate: 4-Bromofluorobenzene 99.39.93
"10.0 70-130Surrogate: Dibromofluoromethane 95.49.54
"10.0 70-130Surrogate: Toluene-d8 99.39.93
Method Blank Spike (2300042-BS2)Prepared: 04/13/23 Analyzed: 04/14/23
1,2,4-Trimethylbenzene ug/L1.0 20.0 70-13095.819.2
1,2-Dichloroethane "1.0 20.0 70-13080.616.1
1,3,5-Trimethylbenzene "1.0 20.0 70-13094.618.9
Benzene "1.0 20.0 70-13096.519.3
Ethyl Benzene "1.0 20.0 70-13096.619.3
m,p-Xylene "2.0 40.0 70-13097.338.9
Methyl tert-Butyl Ether "1.0 20.0 70-13010420.8
Naphthalene "1.0 20.0 70-13088.617.7
o-Xylene "1.0 20.0 70-13096.019.2
Toluene "1.0 20.0 70-13095.019.0
"10.0 70-130Surrogate: 4-Bromofluorobenzene 10010.0
"10.0 70-130Surrogate: Dibromofluoromethane 97.39.73
"10.0 70-130Surrogate: Toluene-d8 10010.0
Method Blank Spike (2300042-BS3)Prepared: 04/13/23 Analyzed: 04/15/23
TPH as Gasoline ug/L100 800 70-13072.0576
"10.0 70-130Surrogate: 4-Bromofluorobenzene 10110.1
"10.0 70-130Surrogate: Dibromofluoromethane 97.69.76
"10.0 70-130Surrogate: Toluene-d8 98.89.88
Method Blank Spike (2300042-BS4)Prepared: 04/13/23 Analyzed: 04/15/23
1,2,4-Trimethylbenzene ug/L1.0 20.0 70-13096.219.2
1,2-Dichloroethane "1.0 20.0 70-13090.918.2
1,3,5-Trimethylbenzene "1.0 20.0 70-13095.719.1
Benzene "1.0 20.0 70-13099.219.8
Ethyl Benzene "1.0 20.0 70-13098.219.6
m,p-Xylene "2.0 40.0 70-13098.639.4
Methyl tert-Butyl Ether "1.0 20.0 70-13010521.0
Naphthalene "1.0 20.0 70-13095.619.1
o-Xylene "1.0 20.0 70-13097.219.4
Toluene "1.0 20.0 70-13097.419.5
"10.0 70-130Surrogate: 4-Bromofluorobenzene 10210.2
"10.0 70-130Surrogate: Dibromofluoromethane 10010.0
"10.0 70-130Surrogate: Toluene-d8 99.19.91
Page 17 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - TVPH/BTEX/MTBE/Naphthalene by GC/MS
Batch 2300042 - EPA 5030B-R8
Matrix Spike (2300042-MS1)Prepared: 04/13/23 Analyzed: 04/14/23 Source: 2304004-07
TPH as Gasoline ug/L100 800 70-13082.8662< 100
"10.0 70-130Surrogate: 4-Bromofluorobenzene 99.79.97
"10.0 70-130Surrogate: Dibromofluoromethane 96.79.67
"10.0 70-130Surrogate: Toluene-d8 99.49.94
Matrix Spike (2300042-MS2)Prepared: 04/13/23 Analyzed: 04/14/23 Source: 2304004-07
1,2,4-Trimethylbenzene ug/L1.0 20.0 70-13010521.4 0.3
1,2-Dichloroethane "1.0 20.0 70-13093.218.6 < 1.0
1,3,5-Trimethylbenzene "1.0 20.0 70-13010621.1 < 1.0
Benzene "1.0 20.0 70-13010721.5 < 1.0
Ethyl Benzene "1.0 20.0 70-13010721.5 < 1.0
m,p-Xylene "2.0 40.0 70-13010742.8 < 2.0
Methyl tert-Butyl Ether "1.0 20.0 70-13011022.0 < 1.0
Naphthalene "1.0 20.0 70-13089.417.9 < 1.0
o-Xylene "1.0 20.0 70-13010320.6 < 1.0
Toluene "1.0 20.0 70-13010821.6 < 1.0
"10.0 70-130Surrogate: 4-Bromofluorobenzene 99.69.96
"10.0 70-130Surrogate: Dibromofluoromethane 10010.0
"10.0 70-130Surrogate: Toluene-d8 10110.1
Matrix Spike Dup (2300042-MSD1)Prepared: 04/13/23 Analyzed: 04/14/23 Source: 2304004-07
TPH as Gasoline ug/L100 800 2570-13083.4 0.775667< 100
"10.0 70-130Surrogate: 4-Bromofluorobenzene 10410.4
"10.0 70-130Surrogate: Dibromofluoromethane 97.99.79
"10.0 70-130Surrogate: Toluene-d8 99.99.99
Matrix Spike Dup (2300042-MSD2)Prepared: 04/13/23 Analyzed: 04/14/23 Source: 2304004-07
1,2,4-Trimethylbenzene ug/L1.0 20.0 2570-130107 2.1321.8 0.3
1,2-Dichloroethane "1.0 20.0 2570-13093.7 0.58918.7 < 1.0
1,3,5-Trimethylbenzene "1.0 20.0 2570-130108 2.2521.6 < 1.0
Benzene "1.0 20.0 2570-130110 2.5322.0 < 1.0
Ethyl Benzene "1.0 20.0 2570-130111 2.9422.1 < 1.0
m,p-Xylene "2.0 40.0 2570-130110 2.9744.1 < 2.0
Methyl tert-Butyl Ether "1.0 20.0 2570-130109 0.86921.8 < 1.0
Naphthalene "1.0 20.0 2570-13094.4 5.4418.9 < 1.0
o-Xylene "1.0 20.0 2570-130107 3.6721.3 < 1.0
Toluene "1.0 20.0 2570-130109 0.36921.7 < 1.0
"10.0 70-130Surrogate: 4-Bromofluorobenzene 99.59.95
"10.0 70-130Surrogate: Dibromofluoromethane 97.69.76
"10.0 70-130Surrogate: Toluene-d8 99.89.98
Page 18 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - TVPH/BTEX/MTBE/Naphthalene by GC/MS
Batch 2300042 - EPA 5030B-R8
Trip Blank (2304004-11)Prepared: 04/13/23 Analyzed: 04/14/23
1,2,4-Trimethylbenzene ug/L1.0< 1.0
1,2-Dichloroethane "1.0< 1.0
1,3,5-Trimethylbenzene "1.0< 1.0
Benzene "1.0< 1.0
Ethyl Benzene "1.0< 1.0
m,p-Xylene "2.0< 2.0
Methyl tert-Butyl Ether "1.0< 1.0
Naphthalene "1.0< 1.0
o-Xylene "1.0< 1.0
Toluene "1.0< 1.0
TPH as Gasoline "100< 100
"10.0 70-130Surrogate: 4-Bromofluorobenzene 98.69.86
"10.0 70-130Surrogate: Dibromofluoromethane 99.79.97
"10.0 70-130Surrogate: Toluene-d8 99.29.92
Holding Blank (2304004-12)Prepared: 04/13/23 Analyzed: 04/14/23
1,2,4-Trimethylbenzene ug/L1.0< 1.0
1,2-Dichloroethane "1.0< 1.0
1,3,5-Trimethylbenzene "1.0< 1.0
Benzene "1.0< 1.0
Ethyl Benzene "1.0< 1.0
m,p-Xylene "2.0< 2.0
Methyl tert-Butyl Ether "1.0< 1.0
Naphthalene "1.0< 1.0
o-Xylene "1.0< 1.0
Toluene "1.0< 1.0
TPH as Gasoline "100< 100
"10.0 70-130Surrogate: 4-Bromofluorobenzene 98.89.88
"10.0 70-130Surrogate: Dibromofluoromethane 10010.0
"10.0 70-130Surrogate: Toluene-d8 10110.1
Page 19 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Result
Reporting
Limit Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit Analyte
Quality Control - Extractable Petroleum Hydrocarbons by 8015 DRO
Batch 2300056 - EPA 3520C
Method Blank (2300056-BLK1)Prepared: 04/24/23 Analyzed: 05/04/23
Diesel range organics ug/L400< 400
"100 60-140Surrogate: o-Terphenyl 90.890.8
Method Blank (2300056-BLK2)Prepared: 04/25/23 Analyzed: 05/04/23
Diesel range organics ug/L400< 400
"100 60-140Surrogate: o-Terphenyl 86.086.0
Method Blank (2300056-BLK3)Prepared: 04/26/23 Analyzed: 05/05/23
Diesel range organics ug/L400< 400
"100 60-140Surrogate: o-Terphenyl 79.579.5
Method Blank Spike (2300056-BS1)Prepared: 04/24/23 Analyzed: 05/04/23
Diesel range organics ug/L400 2000 60-12087.61750
"100 60-140Surrogate: o-Terphenyl 90.590.5
Method Blank Spike (2300056-BS2)Prepared: 04/25/23 Analyzed: 05/04/23
Diesel range organics ug/L400 2000 60-12082.01640
"100 60-140Surrogate: o-Terphenyl 84.384.3
Method Blank Spike (2300056-BS3)Prepared: 04/26/23 Analyzed: 05/05/23
Diesel range organics ug/L400 2000 60-12078.61570
"100 60-140Surrogate: o-Terphenyl 84.684.6
Matrix Spike (2300056-MS4)Prepared: 04/26/23 Analyzed: 05/05/23 Source: 2304004-07
Diesel range organics ug/L400 2000 60-12088.41770< 400
"100 60-140Surrogate: o-Terphenyl 84.384.3
Matrix Spike Dup (2300056-MSD4)Prepared: 04/26/23 Analyzed: 05/05/23 Source: 2304004-07
Diesel range organics ug/L400 2000 2560-12088.4 0.05091770< 400
"100 60-140Surrogate: o-Terphenyl 80.880.8
NOTE:
%REC is percent recovery, Result (less sample contribution) divided by the Spike Level
RPD is the Relative Percent Difference (difference between the Result and the Source Result) divided by their average
Page 20 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Page 21 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Page 22 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Page 23 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Appendix A - Exceptions Report
Lab Number Sample Name Analysis Analyte Name Explanation
2304004-01 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-1 TPH as Gasoline
2304004-01 Diesel-Low-R8 Analyzed outside of holding
time.
MW-1 *ALL*
2304004-02 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-14 TPH as Gasoline
2304004-02 Diesel-Low-R8 Analyzed outside of holding
time.
MW-14 *ALL*
2304004-03 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-5 TPH as Gasoline
2304004-03 Diesel-Low-R8 Analyzed outside of holding
time.
MW-5 *ALL*
2304004-04 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-13 TPH as Gasoline
2304004-04 Diesel-Low-R8 Analyzed outside of holding
time.
MW-13 *ALL*
2304004-05 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-13 DUP TPH as Gasoline
2304004-05 Diesel-Low-R8 Analyzed outside of holding
time.
MW-13 DUP *ALL*
2304004-06 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-6 TPH as Gasoline
2304004-06 Diesel-Low-R8 Analyzed outside of holding
time.
MW-6 *ALL*
2304004-07 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-19 TPH as Gasoline
2304004-07 Diesel-Low-R8 Analyzed outside of holding
time.
MW-19 *ALL*
2304004-08 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
MW-18R TPH as Gasoline
2304004-08 Diesel-Low-R8 Analyzed outside of holding
time.
MW-18R *ALL*
2304004-11 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
Trip Blank TPH as Gasoline
2304004-12 BTEX/Gasoline by 8260 Continuing calibration
criteria not met - low
Holding Blank TPH as Gasoline
Page 24 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Appendix B - Samples and Analysis
Method Name Analysis # Samples Work Order # Lab SOP
300.0 Anions by IC23040048 EPA 300.0 INORM-006v11_Anions
_Aquion
Alkalinity - R823040048 EPA 310.1 INORM-302v21_Alk
BTEX/Gasoline by 826023040048 8260/8015 ORGM-007v16_
BTEX8260
Diesel-Low-R823040048 EPA 8015 ORGM-508v17_Diesel
EDB-R823040048 EPA 8011 ORGM-505v18_EDB-D
BCP
Page 25 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453
Certificate of AnalysisProject: Rod Harrison LSR No: 2304004
Appendix C - Data Assessment Guidelines
QC Check Flagging Criteria
Initial Calibration (ICAL) If the calibration fails, then all failing analytes for all samples are qualified as estimated. This
should be rare because samples are usually re-run if the calibration fails.
Initial Calibration
Verification (ICV) or
Standard Reference
Material (SRM)
High failure: All detections for failing analytes for all samples are qualified as estimated.
Low failure: All failing analytes for all samples are qualified as estimated.
Continuing Calibration
Verification (CCV)
The CCV sometimes fails "High" or "Low". If this happens, all detections for failing
analytes for all associated samples are qualified as estimated. A high-failure means the
instrument got more sensitive since the caibration, and a low-failure means it lost sensitivity.
Continuing Calibration
Blank (CCB)
All detections for failing analytes for all associated samples where the concentration in the
blank is greater than 1/10 the amount measured in the sample OR if the blank contamination
otherwise affects the sample results are qualified as estimated.
Blanks (BLK) Preparation
Blank, Method, Trip,
Storage, etc.
All detections for failing analytes for all samples where the concentration in the blank is
greater than 1/10 the amount measured in the sample OR, if the blank contamination
otherwise affects the sample results are qualified as estimated.
Lab Control Sample
(LCS) or Standard
Reference Material (SRM)
or Blank Spike (BS)
High failure: All detections for failing analytes for all associated samples are qualified as
estimated. Low failure: All failing analytes for all associated samples are qualified as
estimated.
Matrix Spike (MS) High failure: All detections for failing analytes in the parent sample are qualified as
estimated. Low failure: All failing analytes in the parent sample are qualified as estimated.
No qualification if the native concentration is greater than or equal to 4x the spike
concentration.
Matrix Spike Duplicate
(MSD)
%R Failure: Same as matrix spike. RPD Failure: All failing analytes in the parent sample are
qualified as estimated.
Duplicate Sample (DUP) If two duplicates don't meet acceptance critera then all failing analytes in the parent sample
are qualified as estimated. No qualification is used if the native concentration is less than the
RL.
Serial Dilution (SD) In the serial dilution, if there are problems, then all failing analytes in the parent sample are
qualified as estimated. This could happen due to matrix effects. No qualification if native
concentration is less than or equal to 50x the RL.
Detection Limit Standard
(CRA) or (CRL)
High failure: All detections for failing analytes less than or equal to 5x the concentration in
the CRL for all associated samples are qualified as estimated. Low failure: All failing
analytes less than or equal to 5x the RL for all associated samples are qualified as estimated.
Internal Standard (IS) Where an internal standard is used, the analytes associated with the failing internal standard
(IS) are qualified as estimated. One use of an internal standard is to measure extraction
efficiency. If the extractions recovery is outside of criteria, then the final result is qualified.
Surrogate Spike (SURR) High failure: All detections for all analytes associated with the failing surrogate are qualified
as estimated. Low failure: All analytes associated with the failing surrogate are qualified as
estimated. If obvious chromatographic interference with the surrogate is present,
qualification may not be necessary and will be based on the professional judgment of the
analyst.
Dissolved > Total If the dissolved metal concentration is greater than the total metal concentration then both
are qualified as estimated.
Note: The J Qualifier is used to indicate an estimated value. (This table was last edited on 2/8/2023)
Page 26 of 26 11-Jul-2023Date Generated:2304004 FINAL 07 11 23 1453