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HomeMy WebLinkAboutDERR-2025-005255Summary Report for August 2023 Indoor Air Sampling Event The Shops at Fort Union (formerly Fort Union Family Center) Fort Union Boulevard Midvale, Utah Prepared for: Site Centers 3300 Enterprise Parkway Beachwood, OH 44122 Prepared by: Stantec Consulting Services Inc. 2890 East Cottonwood Parkway Suite 300 Salt Lake City UT, 84121 Project No.: 203706007 October 18, 2023 Sign-off Sheet and Signatures of Environmental Professionals V//230706007/05-reports/delivs/2023/augSumRept The conclusions in this Report are Stantec’s professional opinion, as of the time of the Report, and concerning the scope described in the Report. The opinions in the document are based on conditions and information existing at the time the scope of work was conducted and do not take into account any subsequent changes. The Report relates solely to the specific project for which Stantec was retained and the stated purpose for which the Report was prepared. The Report is not to be used or relied on for any variation or extension of the project, or for any other project or purpose, and any unauthorized use or reliance is at the recipient’s own risk. Stantec has assumed all information received from Site Centers (the “Client”) and third parties in the preparation of the Report to be correct. While Stantec has exercised a customary level of judgment or due diligence in the use of such information, Stantec assumes no responsibility for the consequences of any error or omission contained therein. This Report is intended solely for use by the Client in accordance with Stantec’s contract with the Client. While the Report may be provided by the Client to applicable authorities having jurisdiction and to other third parties in connection with the project, Stantec disclaims any legal duty based upon warranty, reliance or any other theory to any third party, and will not be liable to such third party for any damages or losses of any kind that may result. Prepared by: John G. Russell, III, CPG Sr. Hydrogeologist, Environmental Risk Manager Utah-Licensed Professional Geologist 5216074-2250 Reviewed by: Rich Pratt Sr. Environmental Technician SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT V//230706007/05-reports/delivs/2023/augSumRept i Table of Contents 1.0 EXECUTIVE SUMMARY .................................................................................................1.1 2.0 AUGUST 2023 INDOOR AIR SAMPLING EVENT ...........................................................2.1 2.1 SAMPLING PROTOCOL ............................................................................................... 2.1 2.2 ANALYTICAL RESULTS .................................................................................................. 2.1 3.0 QUALITY ASSURANCE AND QUALITY CONTROL ........................................................3.1 3.1 SAMPLE REQUIREMENTS, CONTAINERS, AND PRESERVATION .................................. 3.1 3.2 CHAIN-OF-CUSTODY, HOLDING TIME, AND RECORD KEEPING ............................... 3.1 3.3 CROSS-CONTAMINATION .......................................................................................... 3.1 3.4 DATA QUALITY INDICATORS AND QA/QC SAMPLES ................................................ 3.1 4.0 RECOMMENDATIONS ..................................................................................................4.1 LIST OF FIGURES Figure 1 General Site Location, Topographic Map Figure 2 General Site Location Map, Aerial Image Figure 3 Plan-View Map of Tenant Suites LIST OF TABLES Table 1 Indoor Air Sampling Analytical Results Table 2 Historical Indoor Air Sampling Analytical Results LIST OF APPENDICES Appendix A Copy of ALS’ Air Sampling Laboratory Result Report SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT EXECUTIVE SUMMARY October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept 1.1 1.0 EXECUTIVE SUMMARY On behalf of Site Centers, Stantec has prepared this report to present the results of the August 8, 2023 indoor air sampling field activities and analytical results associated with sampling of eight of the 11 suites located at The Shops at Ft. Union in Midvale, Utah. Reference Figures 1 and 2 for general and site-specific, location maps. Figure 3 identifies individual tenant suites located within the shopping mall area, including suite #34 a former dry cleaning operation. As proposed in our April 2023 summary report, Suites #50 (Office Max), #52 (ULTA,) and #56 (Smiths Food and Drug) were not sampled during the August 2023 sampling event since all analyte concentrations were below corollary United States Environmental Protection Agency (US EPA) Commercial Indoor Air Vapor Intrusion Screening Levels (VISLs) during at least the prior two sampling events (January and April 2023). As of the January 2023 sampling event, the UDEQ apprised Stantec that any suites not sampled may require sampling as part of final VCP site closure proceedings. Each indoor air sample was analyzed for the following Volatile Organic Compounds (VOCs) by Method TO-15 Selected Ion Monitoring (SIM): tetrachloroethylene (aka, perchloroethylene, ‘PERC’, or PCE) and possible PCE degradative byproducts trichloroethylene (TCE); cis- and trans- dichloroethylene (cis/trans-DCE); 1,2-dichloroethane (1,2-DCA); and vinyl chloride. Table 1 presents recent indoor air results associated with laboratory Method TO-15 SIM analyses, including the August 2023 results. Table 2 includes historical indoor air results associated with VOC analysis by standard Method TO-15, which includes numerous other VOC constituents besides PCE and its degradative byproducts. The UDEQ, VCP and Site Centers agreed that indoor air sampling events conducted after the March 2017 sampling event would be performed for PCE and its five degradative byproducts by the SIM method, in order for the laboratory to lower its Method Detection and Reporting Limits to satisfy corollary US EPA Commercial Indoor Air VISL concentrations of low micrograms per cubic meter (i.e., µg/m3). In summary, all analyte concentrations were below corollary VISLs, except for TCE (3.4 µg/m3, which exceeded its VISL of 2.99 µg/m3 in Suite #38 (It’s About Time). TCE was detected in seven of the eight suites at concentrations slightly higher than those of April 2023. PCE was only detected in Suites #36 (Shoe Repair), #40 (Mail Center), and #46 (Sally’s Beauty) at concentrations higher than those in April 2023. SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT AUGUST 2023 INDOOR AIR SAMPLING EVENT October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept 2.1 2.0 AUGUST 2023 INDOOR AIR SAMPLING EVENT 2.1 SAMPLING PROTOCOL On August 8, 2023, Stantec collected indoor air samples from eight of the 11 suites sampled in the past and most recently during April 2023. Stantec collected indoor air samples at similar locations and in similar fashion as previous sampling events, including hand-delivery of the samples to the laboratory on August 9, 2023. Each indoor air sample was collected in a 6-liter, stainless-steel, individually-certified, summaTM canister, equipped with a laboratory-certified, 8-hour flow rate regulator that was provided by ALS Laboratories of Salt Lake City, Utah. Sampling locations within each suite were similar to historical sampling locations, typically representative of areas where tenant employees spend the majority of their workday, such as registers, office desks, workstations, etc. Sample canisters were located atop the floor at each location, thereby representing a low-elevation, sampling point within each suite. Each summa canister was labeled and hand-delivered to ALS for quantitative analysis of PCE; TCE; cis- and trans-1,2-DCE; 1,2-DCA; and vinyl chloride by the TO- 15 SIM analytical methodology. 2.2 ANALYTICAL RESULTS Table 1 provides a summary of the analytical results associated with the August 8th sampling event and recent analytical results by the TO-15, SIM laboratory method, while historical TO-15 VOC data are presented in Table 2. A copy of the August 2023 laboratory result report is attached in Appendix A. All analyte concentrations were below corollary VISLs, except for TCE (3.4 µg/m3, which exceeded its VISL of 2.99 µg/m3 in Suite #38 (It’s About Time). TCE was detected in seven of the eight suites at concentrations slightly higher than those of April 2023. PCE was only detected in Suites #36 (Shoe Repair), #40 (Mail Center), and #46 (Sally’s Beauty) at concentrations higher than those of April 2023. SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT QUALITY ASSURANCE AND QUALITY CONTROL October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept 3.1 3.0 QUALITY ASSURANCE AND QUALITY CONTROL The following sections discuss the Quality Assurance/Quality Control (QA/QC) measures utilized during the indoor air sampling event. 3.1 SAMPLE REQUIREMENTS, CONTAINERS, AND PRESERVATION All summa canisters and dedicated regulators were provided and certified by the laboratory. All summa canisters were hand-delivered by Stantec staff to the laboratory the same day as sample collection. 3.2 CHAIN-OF-CUSTODY, HOLDING TIME, AND RECORD KEEPING Chain-of-Custody, sample labeling, and record keeping procedures were in accordance with measures used previously and are deemed adequate for the objectives of the project. The sample canisters remained in secure custody of the sampler until hand-delivery to the laboratory. Samples were analyzed within prescribed Holding Times and the results are deemed adequate for use. In summary, the results are deemed satisfactory and useable for this investigation. 3.3 CROSS-CONTAMINATION All summaTM canisters were provided by the laboratory, and each canister and regulator were individually-cleaned and certified, prior to sample collection. Stantec’s sampler wore nitrile gloves during sampling activities. 3.4 DATA QUALITY INDICATORS AND QA/QC SAMPLES The laboratory’s Quality Control Report, included within Appendix A herein, reports that the percent difference for target compounds in the Continuing Calibration Verification (CCV) standard must be less than 30% relative to the target. The following compounds did not meet this criteria: Vinyl Chloride and 1,2-Dichloroethane. The Laboratory Control Sample Duplicate (LCSD) for vinyl chloride was slightly outside the Quality Control Limits. Laboratory data reporting requisites were similar to historical analytical protocol and methodologies, and appear valid and reflect adequate precision, accuracy, representativeness, completeness, and comparability (PARCC) and to be otherwise adequate for their intended use. Stantec’s comparative analysis of historical air quality results and QA/QC data indicate that the August 8, 2023 analytical results appear valid and useable for ongoing monitoring of progress toward satisfying corollary VISL Cleanup Levels. SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT RECOMMENDATIONS October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept 4.1 4.0 RECOMMENDATIONS We propose that indoor air samples be collected from two of the 11 suites during November 2023. In consideration of the August and April 2023 analytical results, Stantec proposes sampling Suite #38 (It’s About Time), due this suite’s TCE VISL exceedance in August, and Suite #36 (Shoe Repair) because it was not sampled in April 2023 but exhibited an elevated 1,2-DCA concentration during the preceding January 2023 sampling event. Stantec proposes that no other indoor air samples be collected during November from all other suites, considering the recent and historical VOC results and fact that indoor air quality within these specific suites has satisfied corollary VISLs, recently. Stantec proposes that, if both Suites #36 and #38 satisfy all corollary PCE and byproduct VISL concentrations during the November sampling event, then Stantec will conduct two consecutive, semi-annual sampling events that include sampling/analysis of all 11 suites. The semi-annual sampling events are proposed for Spring and Fall 2024. If the two semi-annual sampling events indicate that all 11 suites satisfy corollary VISL (Commercial) concentrations, then Site Centers proposes formal UDEQ “Closure” of the VCP project, including Stantec’s decommissioning of the two soil vapor extraction (SVE) vacuum units and cement grout abandonment of groundwater monitoring well MW-2 and all sub-slab soil gas probes, etc. Site Centers and the UDEQ would discuss more precisely what would be entailed in formal VCP project closure, including fashioning of an Environmental Covenant that would stipulate that the VCP site can only be used for Commercial land use purposes, as is anticipated currently and for the foreseeable future. In the event that one or more suites does not satisfy corollary VISLs (at any sampling event), then only those corresponding suite(s) would be sampled on a quarterly basis until all corollary VISL concentrations are satisfied during two consecutive, quarterly sampling events. Once the suite(s) satisfy all corollary VISL concentrations for two consecutive quarterly sampling events, then we propose implementing the above-proposed, semi-annual sampling program at all 11 suites in pursuit of VCP project closure. Once all 11 suites achieve two consecutive quarters of satisfying VISLs, then Site Centers would request formal UDEQ VCP project closure. SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT FIGURES October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept Figure 1 General Site Location, Topographic Map SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT FIGURES October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept Figure 2 General Site Location Map, Aerial Image Design by Revised by Figure 2 – General Site Location Map LEGEND The Shops at Fort Union Date Revised JR JR 8/20/13 CH-1 CH-4 CH-3 CH-2 Not to Scale Generalized, Outer Perimeter of Property Comprising The Shops at Ft. Union Generalized, Areal Extent of VCP Subject Site SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT FIGURES October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept Figure 3 Plan-View Map of Tenant Suites Design by Revised by Figure 3 – Tenant Suites LEGEND The Shops at Fort Union Date Revised JR JR 8/21/13 CH-1 CH-4 CH-3 CH-2 Not to Scale Tenant Suite # Tenant Name (Aug. 2013) Square Feet (sq. ft.) GN DC SR AT MC MWJD FSSB OM US SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT TABLES October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept Table 1 January 2023 Indoor Air Analytical Results Tetrachloroethene (PCE)Vinyl chloride trans-1,2- Dichloroethene** cis- 1,2-Dichloroethene** 1,2- Dichloroethane Trichloroethene (TCE) GN 08/08/23 < 0.34 <0.13 <0.20 <0.20 < 0.20 0.75 GN 04/27/23 < 0.34 <0.13 <0.20 <0.20 < 0.20 0.33 GN 01/25/23 0.43 <0.13 <0.20 <0.20 0.25 0.95 GN 10/07/22 <0.34 <0.13 <0.20 <0.20 < 0.2 29.0 GN 06/29/22 <0.34 <0.13 <0.20 <0.20 0.26 1.5 GN 11/21/19 <0.34 <0.13 <0.20 <0.20 0.62 280 GN 05/09/19 0.41 <0.13 <0.20 <0.20 0.97 960.0 GN 06/07/18 0.67 <0.13 <0.20 <0.20 0.29 3.0 GN 03/20/18 0.56 <0.13 <0.20 <0.20 0.27 58.0 Indoor-GN 12/05/17 0.82 <0.13 <0.20 <0.20 <0.20 8.3 Indoor-GN 08/10/17 0.60 <0.13 <0.20 <0.20 <0.20 6.1 DC 08/08/23 < 0.34 < 0.13 0.21 <0.20 <0.20 1.20 DC 04/27/23 0.39 < 0.13 < 0.20 <0.20 <0.20 0.70 DC 01/25/23 0.68 < 0.13 0.23 <0.20 <0.20 0.97 DC 10/07/22 0.41 <0.13 <0.2 < 0.2 0.74 160.0 DC 06/29/22 <0.34 0.15 0.20 <0.20 0.59 7.7 DC 11/21/19 <0.34 <0.13 <0.20 <0.20 0.69 240 DUP 11/21/19 <0.34 <0.13 <0.20 <0.20 0.61 270 DUP 05/09/19 0.50 <0.13 0.32 <0.20 2.6 2500 DC 05/09/19 0.54 <0.13 0.29 <0.20 3.1 3000 DUP 06/07/18 0.84 <0.13 <0.20 <0.20 2.6 31 DC 06/07/18 0.93 <0.13 <0.20 <0.20 2.0 25 DC-DUP 03/20/18 1.3 <0.13 <0.20 <0.20 9.6 180 DC 03/20/18 0.54 <0.13 <0.20 <0.20 0.75 150 DC-DUP 03/20/18 0.47 <0.13 <0.20 <0.20 0.61 160 DUP 12/06/17 <0.34 <0.13 <0.20 <0.20 0.93 59 Indoor-DC 12/06/17 0.36 <0.13 <0.20 <0.20 <0.20 76 DUP 08/10/17 0.66 0.22 <0.20 <0.20 0.49 30 Indoor-DC 08/10/17 0.60 0.22 <0.20 <0.20 2.3 480 SR 08/08/23 0.58 < 0.13 0.26 < 0.20 < 0.20 1.60 SR 04/27/23 SR 01/25/23 0.84 < 0.13 0.28 <0.20 2.40 2.20 SR 10/07/22 0.50 < 0.13 < 0.20 < 0.20 0.95 150 SR 06/29/22 0.84 < 0.13 0.51 <0.20 < 0.20 45 SR 11/21/19 0.54 <0.13 0.78 <0.20 2.3 480 SR 05/09/19 0.65 <0.13 1.80 <0.20 8.1 3,100 SR 06/07/18 1.3 <0.13 <0.20 <0.20 9.6 180 SR 03/20/18 0.4 <0.13 <0.20 <0.20 2.6 460 Indoor-SR 12/05/17 1.8 <0.13 <0.20 <0.20 0.96 11 Indoor-SR 08/10/17 2.1 <0.13 <0.20 <0.20 8.9 75 AT 8/82023 < 0.34 <0.13 0.46 <0.20 < 0.20 3.40 AT 04/27/23 < 0.34 <0.13 0.25 <0.20 < 0.20 2.80 AT 01/25/23 < 0.34 <0.13 0.90 <0.20 < 0.20 9.80 AT 10/07/22 < 0.34 < 0.13 1.40 < 0.20 0.21 19 AT 06/29/22 < 0.34 <0.13 4.30 <0.20 0.28 22 AT 11/21/19 0.74 <0.13 <0.20 <0.20 0.27 25 AT 05/09/19 0.36 <0.13 <0.20 <0.20 1.20 850 AT 06/07/18 0.67 <0.13 <0.20 <0.20 0.67 55 AT 03/20/18 0.49 <0.13 <0.20 <0.20 0.53 180 Indoor-AT 12/06/17 0.51 <0.13 <0.20 <0.20 0.44 2,200 Indoor-AT 08/10/17 0.50 <0.13 <0.20 <0.20 0.33 290 Table 1 Indoor Air Analytical Results The Shops at Fort Union Midvale, Utah ` Sa m p l e I D Da t e C o l l e c t e d PCE and By-Product VOCs* - Selected Ion Mode-SIM Micrograms per cubic-meter Suite #32 Groovy Nails Suite #34 Former Ft. Union Dry Cleaners Suite #36 Family Shoe Repair Suite #38 It's All About Time Tenant operations were posted: 'Closed' Tetrachloroethene (PCE)Vinyl chloride trans-1,2- Dichloroethene** cis- 1,2-Dichloroethene** 1,2- Dichloroethane Trichloroethene (TCE) Table 1 Indoor Air Analytical Results The Shops at Fort Union Midvale, Utah ` Sa m p l e I D Da t e C o l l e c t e d PCE and By-Product VOCs* - Selected Ion Mode-SIM Micrograms per cubic-meter MC 08/08/23 0.69 < 0.13 0.32 <0.20 < 0.20 1.80 MC 04/27/23 < 0.34 < 0.13 <0.20 <0.20 < 0.20 1.20 MC 01/25/23 < 0.34 < 0.13 <0.20 <0.20 < 0.20 0.44 MC 10/07/22 0.47 < 0.13 < 0.20 < 0.20 0.36 5.60 MC 06/29/22 <0.34 0.13 <0.20 <0.20 0.58 0.73 MC 11/21/19 <0.34 <0.13 <0.20 <0.20 <0.20 1.0 MC 05/09/19 0.86 <0.13 <0.20 <0.20 0.51 160.0 MC 06/07/18 0.91 <0.13 <0.20 <0.20 0.85 7.9 MC 03/20/18 0.95 <0.13 <0.20 0.46 <0.20 1.3 Indoor-MC 12/05/17 1.7 <0.13 <0.20 <0.20 <0.20 1.8 Indoor-MC 08/10/17 0.80 0.19 <0.20 <0.20 0.80 21 MWJD 08/08/23 < 0.34 < 0.13 <0.20 <0.20 < 0.20 0.28 MWJD 04/27/23 < 0.34 < 0.13 <0.20 <0.20 < 0.20 < 0.27 MWJD 01/25/23 < 0.34 < 0.13 <0.20 <0.20 0.26 < 0.27 MWJD 10/07/22 < 0.34 < 0.13 <0.20 <0.20 < 0.20 1.0 MWJD 06/29/22 < 0.34 0.25 <0.20 <0.20 0.67 <0.27 MWJD 11/21/19 0.34 <0.13 <0.20 <0.20 <0.20 <0.27 MWJD 05/09/19 0.34 <0.13 <0.20 <0.20 0.81 60.0 MWJD 06/07/18 0.60 0.17 <0.20 <0.20 1.10 3.4 MWJD 03/20/18 < 0.34 <0.13 <0.20 <0.20 <0.20 < 0.27 Indoor-MWJD 12/05/17 0.44 <0.13 <0.20 <0.20 <0.20 1.2 Indoor-MWJD 08/10/17 0.40 0.32 <0.20 <0.20 0.69 4.0 FS 08/08/23 <0.34 < 0.13 <0.20 <0.20 < 0.20 0.66 FS 04/27/23 <0.34 < 0.13 <0.20 <0.20 0.23 0.45 FS 01/25/23 <0.34 < 0.13 <0.20 <0.20 0.25 0.36 FS 10/07/22 <0.34 0.25 <0.20 <0.20 0.64 3.6 FS 06/29/22 <0.34 0.25 <0.20 <0.20 0.83 0.3 FS 11/21/19 <0.34 <0.13 <0.20 <0.20 0.28 1.4 FS 05/09/19 0.54 0.21 <0.20 <0.20 1.0 110.0 FS 06/07/18 1.2 0.18 <0.20 <0.20 1.6 6.0 FS 03/20/18 0.5 <0.13 <0.20 <0.20 0.7 0.6 Indoor-FS 12/05/17 0.56 <0.13 <0.20 <0.20 <0.20 3.4 Indoor-FS 08/10/17 2.6 0.49 <0.20 <0.20 1.5 6.1 SB 08/08/23 0.41 <0.13 <0.20 <0.20 < 0.20 < 0.27 SB 04/27/23 <0.34 <0.13 <0.20 <0.20 < 0.20 0.30 SB 01/25/23 <0.34 <0.13 <0.20 <0.20 0.20 < 0.27 SB 10/07/22 <0.34 <0.13 <0.20 <0.20 0.46 2.80 SB 06/29/22 <0.34 <0.13 <0.20 <0.20 0.63 < 0.27 SB 11/21/19 <0.34 <0.13 <0.20 <0.20 0.30 0.80 SB 05/09/19 0.69 0.19 <0.20 <0.20 1.8 92.0 SB 06/07/18 0.76 0.23 <0.20 <0.20 1.3 5.5 SB 03/20/18 0.36 <0.13 <0.20 <0.20 1.50 0.51 Indoor-SB 12/05/17 1.2 <0.13 <0.20 <0.20 <0.20 1.7 Indoor-SB 08/10/17 0.56 0.28 <0.20 <0.20 0.87 5.5 OM 04/27/23 < 0.34 < 0.13 < 0.20 < 0.20 < 0.21 < 0.27 OM 01/25/23 < 0.34 < 0.13 < 0.20 < 0.20 < 0.21 < 0.27 OM 10/07/22 < 0.34 < 0.13 < 0.20 < 0.20 0.21 4.40 OM 06/29/22 < 0.34 < 0.13 < 0.20 < 0.20 < 0.20 < 0.27 OM 11/21/19 0.50 <0.13 <0.20 <0.20 0.36 1.10 OM 05/09/19 0.75 <0.13 <0.20 <0.20 1.90 51.00 OM 06/07/18 0.55 <0.13 <0.20 <0.20 0.48 0.52 OM 03/20/18 < 0.34 <0.13 <0.20 <0.20 <0.20 0.58 Indoor-OM 12/06/17 0.56 <0.13 <0.20 <0.20 <0.20 6.0 Indoor-OM 08/10/17 0.47 <0.13 <0.20 <0.20 0.27 2.4 Suite #44 Fantastic Sam's Suite #46 Sally Beauty Supply Suite #50 Office Max Suite #42 MW-JD Suite #40 The Mail Center Tetrachloroethene (PCE)Vinyl chloride trans-1,2- Dichloroethene** cis- 1,2-Dichloroethene** 1,2- Dichloroethane Trichloroethene (TCE) Table 1 Indoor Air Analytical Results The Shops at Fort Union Midvale, Utah ` Sa m p l e I D Da t e C o l l e c t e d PCE and By-Product VOCs* - Selected Ion Mode-SIM Micrograms per cubic-meter U 04/27/23 U 01/25/23 <0.34 <0.13 <0.20 <0.20 <0.20 < 0.27 U 10/07/22 <0.34 <0.13 <0.20 <0.20 <0.20 < 0.27 U 06/29/22 <0.34 <0.13 <0.20 <0.20 <0.20 < 0.27 U 11/21/19 <0.34 <0.13 <0.20 <0.20 <0.20 3.2 U 05/09/19 <0.34 <0.13 <0.20 <0.20 0.47 1.8 U 06/07/18 <0.34 <0.13 <0.20 <0.20 0.25 <0.27 U 03/20/18 0.34 <0.13 <0.20 <0.20 <0.20 0.35 Indoor-U 12/06/17 <0.34 <0.13 <0.20 <0.20 <0.20 0.30 Indoor-U 08/10/17 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 S 04/27/23 S 01/25/23 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 S 10/07/22 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 S 06/29/22 <0.34 <0.13 <0.20 <0.20 0.29 <0.27 S 11/21/19 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 S 05/09/19 <0.34 <0.13 <0.20 <0.20 <0.20 1.9 S 06/07/18 0.81 <0.13 <0.20 <0.20 0.22 <0.27 S 03/20/18 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 Indoor-S 12/05/17 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 Indoor-S 08/10/17 <0.34 <0.13 <0.20 <0.20 <0.20 <0.27 47.00 2.79 175 175 0.47 2.99 https://www.epa.gov/vaporintrusion/vapor-intrusion-screening-level-calculator NS: Not Sampled *VOCs - Volatile Organic Compounds. y when warranted. Values in bold indicate concentrations above VISL = US EPA March 2023 Commercial, Indoor Vapor Intrusion Screening Level, THQ=1 (ug/m3), Target Risk Level of 1E- 06. VISL online calculator used to generate these VISLs: Suite #52 Ulta Beauty Suite #56 Smith's Food and Drug VISL NS NS SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT TABLES October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept Table 2. Historical Indoor Air Analytical Results Te t r a c h l o r o e t h e n e Di c h l o r o d i f l u o r o me t h a n e Ch l o r o m e t h a n e Vi n y l c h l o r i d e Fr e o n 1 1 Fr e o n 1 1 3 Ac e t o n e Ca r b o n d i s u l f i d e Me t h y l e n e ch l o r i d e 2- B u t a n o n e ci s - 1 , 2 - Di c h l o r o e t h e n e Et h y l A c e t a t e He x a n e Ch l o r o f o r m Te t r a h y d r o f u r a n 1, 2 - Di c h l o r o e t h a n e Ca r b o n te t r a c h l o r i d e Be n z e n e Cy c l o h e x a n e Tr i c h l o r o e t h e n e 1, 2 - Di c h l o r o p r o p a n e He p t a n e 4- M e t h y l - 2 - pe n t a n o n e To l u e n e Et h y l B e n z e n e m, p - X y l e n e o- X y l e n e St y r e n e 4- E t h y l t o l u e n e 1, 3 , 5 - Tr i m e t h y l b e n z e n e 1, 2 , 4 - Tr i m e t h y l b e n z e n e 1, 4 - Di c h l o r o b e n z e n e 1, 2 - Di c h l o r o b e n z e n e Indoor-GN 3/22/17 <1.0 1.5 0.7 <0.38 0.9 <1.1 7500 <0.47 2.4 510 <0.59 2,400 <0.53 2.1 <0.44 <0.61 <0.94 2.3 140 5 <0.73 15 0.6 420 1.3 5.1 1.3 <1.3 <1.5 <1.5 <1.5 <1.8 1.8 Indoor-GN 12/9/16 <1.0 0.9 0.8 <1.0 1.1 <1.1 950 <0.47 1.5 150 <0.59 4,300 19 2.7 <0.44 <0.61 <0.94 3.2 31 12 <0.73 27 0.7 86 1.7 6.4 1.9 0.96 1.3 1.3 2.7 <0.90 <1.8 Indoor-GN 10/13/16 <1.0 1.8 <0.31 <0.38 1.3 <1.1 5500 <0.47 <0.52 36 <0.59 700 25 2.8 <0.44 <0.61 <0.94 1.3 2.3 10 <0.73 6.4 <0.61 74 1.1 3.8 1.2 <0.64 <0.74 <0.74 1.0 <0.90 <1.8 Indoor-GN 6/29/16 1.0 1.3 1.2 <0.38 1.1 <1.1 12000 <0.47 2.8 92 <0.59 960 10 3.5 <0.44 <0.61 <0.94 0.61 1.2 3.5 <0.73 14 1.2 34 0.75 2.0 <0.65 1.2 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-GN 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 8600 <4.7 <5.2 83 <5.9 750 190 <7.3 <4.4 <6.1 <9.4 <4.8 9.3 <8.1 <7.3 28 <6.1 310 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-GN 12/2/15 <10 <7.4 <3.1 <3.8 <8.4 <11 12000 <4.7 <5.2 62 <5.9 460 23 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 <8.1 <7.3 <6.1 <6.1 47 <6.5 7.9 <6.5 <6.4 <4.7 <7.4 <7.4 <9.0 <18 Indoor-GN 8/14/15 1.5 3.2 1.7 <0.38 1.7 2.7 1200 0.54 1.8 190 <0.59 520 <0.53 2.80 <0.44 <0.61 <0.94 1.5 1.9 7.9 <0.73 3.6 <0.61 67 1.3 3.3 1.1 2.0 <0.74 <0.74 1.1 <0.90 <1.8 Indoor-GN 5/7/15 1.3 3.4 1.7 <0.38 4.3 2.5 7800 <0.47 6.5 150 <0.59 620 190 <0.73 <0.44 <0.61 <0.94 0.9 6.5 1.3 <0.73 4.5 1.7 260 1.6 4.6 1.5 1.7 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-GN 2/5/15 1.7 2.1 1.1 <0.38 1.3 <1.1 660 <0.47 2.7 91 <0.59 530 110 0.95 <0.44 <0.20 <0.94 1.2 8.6 <0.81 <0.73 4.2 <0.61 200 1.1 3.5 1.1 1.2 <0.74 <0.74 1.0 <0.90 <1.8 Indoor-GN 9/9/14 2.5 2.7 1.3 <0.38 1.6 <0.11 6700 <0.47 3.4 81 <0.59 410 10 1.10 <0.44 <0.61 <0.94 1.3 2.5 <0.81 <0.73 3.8 1.1 29 1.6 5.1 1.7 1.6 <0.74 <0.74 1.8 <0.90 <1.8 Indoor-GN 5/29/14 1.5 2.6 1.2 <0.38 1.0 <1.1 4400 <0.47 4.8 51 <0.59 450 85 <0.73 <0.44 <0.61 <0.94 19 51 <0.81 <0.73 37 <0.61 72 3.7 17 4.7 <0.64 1.0 0.84 3.7 <0.90 <1.8 Indoor-GN 2/11/14 420 <7.4 <3.1 <3.8 <8.4 <11 14000 <4.7 5.4 63 <5.9 330 160 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 <8.1 <7.3 <6.1 <6.1 260 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-GN 9/3/13 1700 2.2 1.1 <0.38 1.7 <1.1 12000 0.82 1.6 80 <0.59 890 2.4 <0.73 2.00 <0.61 <0.94 0.64 <0.52 <0.81 <0.73 7.5 <0.61 28 0.76 2.0 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 DUP-1 3/22/17 <1.0 2.3 1.2 <0.38 1.2 <1.1 760 <0.47 2.1 11 <0.59 <1.1 15 <0.73 <0.44 <0.61 <0.94 <0.48 210 7.8 <0.73 18 <0.61 460 <0.65 1.9 <0.65 <1.3 <1.5 <1.5 <1.5 <1.8 <1.8 Indoor-DC 3/22/17 <1.0 2.6 1.1 <0.38 1.3 <1.1 930 <0.47 1.7 13 <0.59 <1.1 18 <0.73 <0.44 <0.61 <0.94 <0.48 240 4.3 <0.73 23 <0.61 570 0.66 2.6 0.67 <1.3 <1.5 <1.5 <1.5 <1.8 <1.8 DUP-1 12/9/16 1.4 2.5 1.3 0.38 1.9 <1.1 1000 <0.47 3.2 20 <0.59 86 25 <0.73 <0.44 <0.61 <0.94 1.9 63 19 <0.73 31 0.9 150 0.98 4.2 1.6 0.9 2.2 2.6 5.1 <0.90 <1.8 Indoor-DC 12/9/16 1.4 2.6 1.5 0.39 2.7 1.5 1100 <0.47 3.5 20 <0.59 94 25 0.89 0.52 0.69 0.95 2.6 67 22 <0.73 31 1.3 160 1.5 5.7 2.2 1.4 3.0 3.3 6.2 1.1 <1.8 DUP-1 10/13/16 <1.0 2.5 1.0 <0.38 1.9 <1.1 2900 <0.47 1.5 51 <0.59 140 130 1.1 <0.44 <0.61 <0.94 1.5 33 35 <0.73 23 1.6 240 1.9 6.2 2.1 2.3 <0.74 0.9 2.5 <0.90 2.2 Indoor-DC 10/13/16 <1.0 2.2 0.9 <1.0 1.8 <1.1 3300 <0.47 1.2 60 <0.59 160 150 1.2 <0.44 <0.61 <0.94 1.5 40 46 <0.73 27 1.7 300 2.0 6.7 2.2 2.4 <0.74 0.9 2.5 <0.90 2.5 DUP-1 6/29/16 1.3 2.8 1.7 <0.38 1.4 <1.1 240 0.60 12 7.2 <0.59 34 67 <0.34 <0.44 <0.61 <0.94 0.58 8.1 9.7 <0.73 34 1.7 120 0.98 2.6 0.90 1.9 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-DC 6/29/16 1.2 2.6 1.9 <0.38 1.2 <1.1 510 <0.47 8.9 7.3 <0.59 35 62 <0.73 <0.44 <0.61 <0.94 <0.48 6.4 8.6 <0.73 27 1.7 130 0.92 2.4 0.85 2.0 <0.74 <0.74 0.90 <0.90 <1.8 DUP-1 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 1200 <4.7 5.9 63 <5.9 84 570 <7.3 <4.4 <6.1 <9.4 <4.8 24 <8.1 <7.3 36 <6.1 830 <6.5 7.4 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-DC 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 960 <4.7 6.1 14 <5.9 82 640 <7.3 <4.4 <6.1 <9.4 <4.8 25 <8.1 <7.3 19 <6.1 900 <6.5 6.8 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 DUP-1 12/2/15 <1.0 2.1 1.0 <0.38 1.1 <1.1 510 <0.47 0.96 12 <0.59 31 54 <0.73 0.53 <0.61 <0.94 1.5 10 4.9 <0.73 2.8 <0.61 73 0.87 3.9 1.3 <0.64 <0.74 <0.74 1.3 <0.90 <1.8 Indoor-DC 12/2/15 1.3 2.2 0.96 <0.38 1.2 <1.1 890 <0.47 0.96 17 <0.59 58 55 <0.73 0.86 <0.61 <0.94 1.8 12 8.1 <0.73 3.2 <0.61 75 1.1 4.7 1.6 0.73 <0.74 <0.74 1.7 <0.90 <1.8 DC 8/14/15 2.0 3.2 1.3 <0.38 1.2 <1.1 540 <0.47 2.4 15 <0.59 61 13 <0.73 <0.44 0.63 <0.94 0.61 1.4 26.0 <0.73 4.3 <0.61 28 1.60 3.6 1.30 3.10 <0.74 <0.74 1.6 <0.90 <1.8 OC DUP 8/14/15 1.5 3.5 1.6 <0.38 1.3 <1.1 310 <0.47 3.7 9.6 <0.59 36 19 <0.73 <0.44 <0.67 <0.94 0.65 <0.52 30.0 <0.73 5.1 <0.61 30 1.60 3.3 1.20 3.20 <0.74 <0.74 1.3 <0.90 <1.8 Indoor-DC 5/7/15 1.4 3.2 1.3 <0.38 1.8 1.2 780 0.94 11.0 44 <0.59 61 540 <0.73 <0.44 1.20 <0.94 0.6 16 2.8 <0.73 7.8 0.8 600 2.10 6.3 2.00 2.40 <0.74 <0.74 0.8 <0.90 <1.8 DUP-DC 5/7/15 1.3 2.8 1.1 <0.38 1.5 <1.1 640 <0.47 7.9 30 <0.59 51 430 <0.73 <0.44 <0.61 <0.94 0.6 12 1.8 <0.73 6.4 <0.61 540 1.80 5.6 1.80 2.10 <0.74 <0.74 0.8 <0.90 <1.8 Indoor-DC 2/5/15 1.4 3.0 1.3 <0.38 1.8 <1.1 370 <0.47 3.0 26 <0.59 <0.54 140 0.39 <0.44 <0.20 <0.94 1.1 15 <0.81 <0.73 3.0 <0.61 260 0.82 3.4 0.90 0.89 <0.74 <0.74 0.83 <0.90 <1.8 Indoor-DC 9/9/14 2.3 2.9 1.3 <0.38 1.4 <1.1 130 0.52 1.2 5.7 <0.59 16 10 <0.73 <0.44 <0.61 <0.94 0.70 1.6 <0.81 <0.73 5.5 2.1 15 4.5 20 2.3 2.0 2.9 0.85 4.6 <0.90 <1.8 DUP-1 9/9/14 2.0 2.5 1.5 <0.38 1.2 <1.1 260 <0.47 3.7 5.4 <0.59 14 11 <0.73 <0.44 <0.61 <0.94 1.10 2.4 <0.81 <0.73 5.4 1.9 17 1.5 5 1.6 1.9 <0.74 <0.74 2.2 <0.90 <1.8 Indoor-DC 5/29/14 30 3.5 1.3 <0.38 1.3 <1.1 640 5.1 6.7 9.4 <0.59 35 14 1.00 <0.44 <0.61 <0.94 1.1 4.3 <0.81 <0.73 3.0 <0.61 56 0.88 4.2 0.96 1.1 <0.74 <0.74 1.9 <0.90 <1.8 DUP-1 5/29/14 30 4.2 <0.31 <0.38 1.5 <1.1 470 <0.47 9.5 <0.44 <0.59 56 16 <0.73 <0.44 <0.61 <0.94 1.2 4.7 <0.81 <0.73 4.1 <0.61 57 1.70 5.4 1.3 1.3 <0.74 <0.74 2.2 <0.90 <1.8 Indoor-DC 2/11/14 1200 2.8 1.1 <0.38 2.0 <1.1 92 <0.47 0.80 1.5 <0.59 1.0 18 <0.73 <0.44 <0.61 <0.94 0.55 1.3 <0.81 <0.73 0.66 <0.61 35 <0.65 0.82 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 DUP-1 2/11/14 1400 3.3 1.2 <0.38 2.1 <1.1 110 2.1 1.1 <0.44 <0.59 <0.54 20 <0.73 <0.44 <0.61 <0.94 0.53 <0.52 <0.81 <0.73 0.64 <0.61 37 <0.65 0.81 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-DC 8/26/13 4600 --------------------------------0.60 ------------------------------ Indoor-SR 3/22/17 <1.0 2.1 1.0 <0.38 1.2 <1.1 6,600 <0.47 2.6 79 <0.59 NA 210 <0.73 <0.44 <0.61 <0.94 0.77 3,200 3.5 <0.73 310 <0.61 5,000 2.2 5.2 1.1 <1.3 <1.5 <1.5 1.5 <1.8 8.9 Indoor-SR 12/9/16 <1.0 2.4 1.3 <0.38 1.9 <1.1 970 <0.47 26 140 <0.59 41 190 <0.73 <0.44 <0.61 <0.94 1.5 700 23 <0.73 370 2.0 450 2.3 8 2.5 3 1.50 2.4 5.6 <0.90 2.1 Indoor-SR 10/13/16 <1.0 2.4 1.2 <0.38 1.3 <1.1 960 15.00 7 150 <0.59 110 660 <0.73 <0.44 <0.61 <0.94 5.5 180 26 <0.73 73 <0.61 990 4 14 4.4 2 0.94 1.8 4.6 <0.90 9 Indoor-SR 6/29/16 1.8 2.0 1.2 <0.38 0.94 <1.1 3,900 <0.47 190 120 <0.59 950 <0.53 <0.73 <0.44 <0.61 <0.94 1.1 300 17 <0.73 1,500 <0.60 8,900 10 33 8.9 24 0.98 2.0 6.1 2.8 99 Indoor-SR 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 2,400 <4.7 18 78 <5.9 180 2100 <7.3 <4.4 <6.1 <9.4 <4.8 120 <8.1 <7.3 110 <6.1 2400 <6.5 20 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-SR 12/2/15 <10 <7.4 <3.1 <3.8 <8.4 <11 4,600 <4.7 31 120 <5.9 1100 6200 <7.3 <4.4 <6.1 <9.4 <4.8 170 <8.1 <7.3 52 <6.1 6100 16 57 15 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-SR 8/14/15 2.7 4.1 1.9 <0.38 1.4 <1.1 1,200 <0.47 140 270 <0.59 630 1200.00 <0.73 <0.44 <0.61 <0.94 0.94 120 48.00 <0.73 130 <0.61 620 21 68 18 6.0 <0.74 0.75 2.5 <0.90 <1.8 Indoor-SR 5/7/15 1.2 2.4 1.4 <0.38 1.9 <1.1 4,700 1.20 84 340 <0.59 440 <0.53 <0.73 <0.44 3.50 <0.94 1.10 130 1.10 <0.73 45 1.4 3300 9 32 9 8.6 <0.74 <0.74 1.8 <0.90 9.8 Indoor-SR 2/5/15 2.5 2.4 1.2 <0.38 1.5 <1.1 800 <0.47 71 480 <0.59 430 1300.00 0.31 <0.44 <0.20 <0.94 1.80 320 <0.81 <0.73 51 4.5 700 12 42 11 3.0 1.4 2.40 8.0 14 19 Indoor-SR 9/10/14 2.5 2.4 1.2 <0.38 1.3 <1.1 1,200 <0.47 5.6 270 <0.59 16 1200.00 <0.73 <0.44 <0.61 <0.94 1.40 260 <0.81 <0.73 33 3.0 2600 5.3 20 5.5 1.3 0.83 2.20 5.7 <0.90 <1.8 Indoor-SR 5/30/14 16 3.0 1.5 <0.38 1.2 <1.1 1200 <0.47 13 120 <0.59 62 860.00 <0.73 <0.44 <0.61 <0.94 4.70 80 <0.81 <0.73 42 <0.61 1300 15 63 21 2.7 3.5 4.00 15 <0.90 8.0 Indoor-SR 2/11/14 400 2.7 1.1 <0.38 2.0 <1.1 3400 1.1 24 180 <0.59 26 1500 <0.73 <0.44 <0.61 <0.94 0.85 89 <0.81 <0.73 56 <0.61 2800 6.7 27 7.1 2.0 0.93 2.40 6.3 <0.90 29 Indoor-SR 9/3/13 2500 2.6 1.3 <0.38 1.4 <1.1 750 <0.47 18 44 <0.59 13 440 <0.73 <0.44 <0.61 <0.94 <0.48 35 0.93 <0.73 8.3 <0.61 620 1.7 8.8 1.9 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Suite #36 Family Shoe Repair Suite #34 Former Ft. Union Dry Cleaners Table 2 Historical VOC Indoor Air Analytical Results The Shops at Fort Union Midvale, Utah VOCs* - EPA Method TO-15 Micrograms per cubic-meter (µg/m3) Lo c a t i o n Sa m p l e I D Da t e C o l l e c t e d Suite #32 Groovy Nails Te t r a c h l o r o e t h e n e Di c h l o r o d i f l u o r o me t h a n e Ch l o r o m e t h a n e Vi n y l c h l o r i d e Fr e o n 1 1 Fr e o n 1 1 3 Ac e t o n e Ca r b o n d i s u l f i d e Me t h y l e n e ch l o r i d e 2- B u t a n o n e ci s - 1 , 2 - Di c h l o r o e t h e n e Et h y l A c e t a t e He x a n e Ch l o r o f o r m Te t r a h y d r o f u r a n 1, 2 - Di c h l o r o e t h a n e Ca r b o n te t r a c h l o r i d e Be n z e n e Cy c l o h e x a n e Tr i c h l o r o e t h e n e 1, 2 - Di c h l o r o p r o p a n e He p t a n e 4- M e t h y l - 2 - pe n t a n o n e To l u e n e Et h y l B e n z e n e m, p - X y l e n e o- X y l e n e St y r e n e 4- E t h y l t o l u e n e 1, 3 , 5 - Tr i m e t h y l b e n z e n e 1, 2 , 4 - Tr i m e t h y l b e n z e n e 1, 4 - Di c h l o r o b e n z e n e 1, 2 - Di c h l o r o b e n z e n e Table 2 Historical VOC Indoor Air Analytical Results The Shops at Fort Union Midvale, Utah VOCs* - EPA Method TO-15 Micrograms per cubic-meter (µg/m3) Lo c a t i o n Sa m p l e I D Da t e C o l l e c t e d Indoor-AT 3/22/17 <1.0 2.6 1.2 <0.38 1.4 <1.1 4,300 <0.47 5.3 8.7 <0.59 <1.1 15 <0.73 <0.44 <0.61 <0.94 1.8 120 2,700 <0.73 45 13 360 2.9 12 3.4 6.2 <1.5 <1.5 2.1 <1.8 <1.8 Indoor-AT 12/9/16 <1.0 2.7 <0.31 <0.38 2.7 <1.1 800 <0.47 4.1 5.1 <0.59 35 5.8 <0.73 0.45 <0.61 <0.94 2.9 8.7 2,000 <0.73 9 21 35 2.0 7.0 2.7 3.7 2.6 2.8 5.5 <0.90 <1.8 Indoor-AT 10/13/16 <1.0 2.4 <0.31 <0.38 1.5 <1.1 170 <0.47 2.2 <0.44 <0.59 16 15 <0.73 <0.44 <0.61 <0.94 1.6 2.0 2,600 <0.73 23 19 33 1.1 4.3 1.5 1.8 <0.74 <0.74 1.3 <0.90 <1.8 Indoor-AT 6/29/16 <1.0 2.1 1.8 <0.38 1.5 <1.1 1,000 <0.47 16 2.1 <0.59 54 2.5 <0.73 <0.44 <0.61 <0.94 <0.48 2.0 120 <0.73 44 48 9.4 <0.65 2.0 0.80 3.2 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-AT 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 3,000 <4.7 5.5 9.0 <5.9 120 610 <7.3 <4.4 <6.1 <9.4 <4.8 20 26 <7.3 63 90 740 <6.5 7.1 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-AT 12/2/12 <1.0 2.1 1.1 <0.38 1.1 <1.1 650 <0.47 0.76 2.3 <0.59 22 3.5 <0.73 <0.44 <0.61 <0.94 1.2 <0.52 66 <0.73 2.8 7.2 14 0.88 4.1 1.6 1.7 <0.74 <0.74 2.1 <0.90 <1.8 Indoor-AT 8/14/15 2.0 3.7 1.9 <0.38 1.2 <1.1 640 <0.47 1.8 6.8 <0.59 15 14.0 <0.73 <0.44 1.70 <0.94 0.65 <0.52 860.0 <0.73 12 2.3 34 2.3 4.8 1.8 11.0 <0.74 <0.74 1.7 <0.90 <1.8 Indoor-AT 5/7/15 1.3 2.4 1.2 <0.38 1.4 <1.1 420 4.2 8.6 7.7 <0.59 <0.54 20.0 <0.73 <0.44 1.80 <0.94 0.65 1.9 50.0 1.50 4 3.7 40 1.5 3.7 1.4 5.5 <0.74 <0.74 0.9 <0.90 <1.8 Indoor-AT 2/5/15 6.4 2.3 1.4 <0.38 1.5 <1.1 470 <0.47 1.9 5.2 <0.59 22 9.3 1.0 <0.44 <0.20 <0.94 1.70 1.8 8.6 <0.73 16 4.9 98 2.2 5.6 2.0 6.0 <0.74 <0.74 2.1 <0.90 <1.8 Indoor-AT 9/9/14 2.3 2.7 1.7 <0.38 1.3 <1.1 2,600 1.4 1.9 4.8 <0.59 160 3.7 <0.73 <0.44 1.10 <0.94 0.81 1.4 <0.81 <0.73 180 130 26 2.1 5.2 1.9 8.4 <0.74 <0.74 2.0 <0.90 <1.8 Indoor-AT 5/29/14 7.2 2.7 1.5 <0.38 1.6 <1.1 1400 6.3 4.7 10 <0.59 31 18 <0.73 <0.44 1.70 <0.94 1.90 5.8 <0.81 1.9 20 <0.61 75 2.0 5.7 1.7 6.7 <0.74 <0.74 1.2 <0.90 <1.8 Indoor-AT 2/12/14 200 3.5 1.7 <0.38 2.1 <1.1 1700 <0.47 2.5 12.0 <0.59 18 28 <0.73 <0.44 <0.61 <0.94 0.88 4.3 <0.81 <0.73 11 <0.61 62 1.2 4.0 1.3 3.0 <0.74 <0.74 1.7 <0.90 1.9 Indoor-AT 9/3/13 2800 2.9 1.9 <0.38 1.5 <1.1 410 <0.47 7.7 8.3 <0.59 11 95 <0.73 <0.44 4.20 <0.94 1.00 5.0 <0.81 <0.73 24 <0.61 160 1.5 5.6 1.8 7.8 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-MC 3/22/17 1.6 2.8 1.2 <0.38 1.4 <1.1 780 <0.47 3.9 4.0 <0.59 <1.1 4.0 0.82 <0.44 <0.61 <0.94 1.5 23 38 <0.73 3.9 0.70 110 1.7 7.4 2.1 3.1 <1.5 <1.5 1.9 <1.8 <1.8 Indoor-MC 12/9/16 <1.0 3.0 1.5 <0.38 1.5 <1.1 600 <0.47 2.2 3.5 <0.59 19 4.4 <0.73 <0.44 <0.61 <0.94 4.3 2.3 4 <0.73 2.2 <0.61 38 2.0 7.1 2.4 1.2 0.92 0.9 2.4 <0.90 <1.8 Indoor-MC 10/13/16 <1.0 <0.74 <0.31 <0.38 1.3 <1.1 780 <0.47 1.0 3.6 <0.59 11 9.1 <0.73 <0.44 <0.61 <0.94 1.6 <0.52 19 <0.73 4.6 0.66 32 1.5 4.8 1.7 1.3 <0.74 <0.74 1.4 <0.90 <1.8 Indoor-MC 6/29/16 <1.0 2.9 1.8 <0.38 1.5 <1.1 100 <0.47 2.0 2.6 <0.59 7.4 1.9 <0.73 <0.44 0.65 <0.94 0.66 1.4 3.0 <0.73 3.2 0.90 35 1.7 4.8 1.7 2.6 <0.74 <0.74 1.6 <0.90 <1.8 Indoor-MC 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 250 <4.7 <5.2 <4.4 <5.9 16 <5.3 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 <8.1 <7.3 7.0 <6.1 170 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-MC 12/2/15 <1.0 2.2 1.1 <0.38 1.1 <1.1 530 <0.47 0.55 2.2 <0.59 7.7 3.9 <0.73 1.7 <0.61 <0.94 1.7 0.92 2.2 <0.73 1.1 <0.61 34 1.1 4.6 1.7 0.96 1.6 1.1 5.0 <0.90 <1.8 Indoor-MC 8/14/15 <1.0 3.7 1.8 <0.38 1.3 <1.1 150 0.70 1.4 4.1 <0.59 19.0 8.2 >0.73 <0.48 0.81 <0.94 0.65 1.7 5.6 <0.73 3.9 <0.61 34 1.6 3.3 1.2 5.9 <0.74 <0.74 1.2 <0.90 <1.8 Indoor-MC 5/7/15 <1.0 2.7 1.1 <0.38 1.6 <1.1 180 <0.47 1.4 3.7 <0.59 10.0 22.0 >0.73 <0.44 <0.61 <0.94 0.89 2.7 1.5 <0.73 2.5 1.10 56 1.7 4.0 1.5 6.2 <0.74 <0.74 1.0 <0.90 <1.8 Indoor-MC 2/5/15 1.5 2.3 1.3 <0.38 1.3 <1.1 76 <0.47 1.5 2.0 <0.59 9.7 3.7 0.54 <0.44 <0.20 <0.94 1.80 1.9 <0.81 <0.73 2.2 <0.61 17 <0.65 <0.65 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-MC 9/9/14 4.5 2.6 1.6 <0.38 1.3 <1.1 58 <0.47 2.3 4.6 <0.59 16 2.0 >0.73 <0.44 <0.61 <0.94 0.93 3.6 <0.81 <0.73 3.1 0.77 30 1.4 3.7 1.3 2.3 <0.74 <0.74 1.6 <0.90 <1.8 Indoor-MC 5/29/14 2.0 4.1 1.3 <0.38 1.7 <1.1 73 <0.47 17 4.4 <0.59 5.4 26 <0.73 <0.44 <0.61 <0.94 5.20 12 <0.81 <0.73 7.9 <0.61 33 0.88 2.0 <0.65 1.3 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-MC 2/11/14 36 2.8 1.2 <0.38 2.1 <1.1 250 3.2 1.4 4.5 <0.59 5.5 20 <0.73 <0.44 <0.61 <0.94 1.60 2.6 <0.81 <0.73 1.9 <0.61 63 0.97 3.6 1.2 0.91 <0.74 <0.74 1.4 <0.90 <1.8 Indoor-MC 9/3/13 2000 2.8 1.6 <0.38 1.5 <1.1 94 <0.47 1.1 3.4 <0.59 5.5 8.4 <0.73 <0.44 <0.61 <0.94 0.50 2.2 <0.81 <0.73 0.88 <0.61 41 <0.65 1.7 0.67 0.75 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-MWJP 3/22/17 <1.0 4.0 1.3 <0.38 1.5 <1.1 460 <0.47 7.0 7.3 <0.59 <1.1 9.1 <0.73 <0.44 0.65 <0.94 0.90 34 24 0.73 5.0 1.2 160 6.7 29 8.0 5.9 <1.5 <1.5 2.8 <1.8 <1.8 Indoor-MW 6/29/16 <1.0 2.7 1.8 0.93 1.4 <1.1 82 <0.47 2.9 1.8 <0.59 3.8 1.6 <0.73 <0.44 0.93 <0.94 <0.48 <0.52 <0.81 <0.73 <0.61 <0.61 3.1 <0.65 <0.65 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-MW 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 280 <4.7 <5.2 <4.4 <5.9 13 39 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 8.1 <7.3 18 <6.1 69 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-MW 12/2/15 <1.0 2.4 1.1 <0.38 1.3 <1.1 160 <0.47 0.96 3.0 <0.59 14 4.2 <0.73 <0.44 <0.61 <0.94 1.6 0.56 4.5 <0.73 2.0 0.79 13 2.1 14 4.9 0.68 1.9 2.2 6.5 <0.90 <1.8 Indoor-MW 8/14/15 33 3.0 2.1 1.30 1.2 <1.1 92 <0.47 2.9 4.5 <0.59 23 1.7 1.3 <0.44 1.60 <0.94 0.56 1.1 1 <0.73 3.2 <0.61 9 1.0 2.2 0.91 2.7 <0.74 <0.74 1.8 <0.90 <1.8 Indoor-MW 5/7/15 <1.0 2.7 1.7 0.55 1.6 <1.1 160 0.58 1.4 3.6 <0.59 22 5.2 1.1 0.70 0.96 <0.94 0.63 0.8 1 <0.73 3.4 <0.61 13 1.2 2.8 1.10 3.0 <0.74 <0.74 0.9 <0.90 <1.8 Indoor-MW 2/5/15 1.1 2.6 1.5 <0.38 1.4 <1.1 130 <0.47 1.3 3.2 <0.59 <0.54 3.1 1.5 <0.44 <0.20 <0.94 1.50 1.2 <0.81 <0.73 3.2 <0.61 12 1.0 2.8 0.99 2.7 <0.74 <0.74 1.1 <0.90 <1.8 Indoor-MW 9/9/14 <1.0 2.3 1.6 <0.38 1.2 <1.1 31 <0.47 1.2 3.7 <0.59 12 1.1 <0.73 <0.44 <0.61 <0.94 0.58 0.78 <0.81 <0.73 1.7 <0.61 4 <0.65 1.5 <0.65 1.8 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-MW 5/29/14 1.9 2.8 2.4 <0.38 <0.84 <1.1 26 <0.47 <0.52 4.0 <0.59 16 240 <0.73 <0.44 <0.61 <0.94 37.00 120 <0.81 <0.73 73 <0.61 130 8.4 26 5.9 1.7 <0.74 <0.74 1.5 <0.90 <1.8 Indoor-MW 2/11/14 56 3.0 1.4 <0.38 2.4 <1.1 700 3.9 2.2 9.6 <0.59 29 30 <0.73 <0.44 <0.61 <0.94 1.60 2.3 <0.81 <0.73 3.2 <0.61 60 0.93 3.4 1.2 2.4 <0.74 <0.74 1.4 <0.90 <1.8 Indoor-MW 9/3/13 1100 2.9 1.5 0.42 1.5 <1.1 94 <0.47 0.77 2.8 <0.59 5.8 2.2 <0.73 <0.44 <0.61 <0.94 <0.48 <0.52 <0.81 <0.73 <0.61 <0.61 5 <0.65 1.3 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-FS 3/22/17 <1.0 3.5 1.5 <0.38 1.6 <1.1 460 <0.47 6.6 9.3 <0.59 <1.1 5.5 3.5 <0.44 0.89 <0.94 1.9 25 8.6 <0.73 4.2 0.75 150 4.6 18 5.0 4.0 <1.5 <1.5 3.4 <1.8 <1.8 Indoor-FS 12/9/16 <1.0 2.3 <0.31 <0.38 2.2 <1.1 650 <0.47 3.2 4.0 <0.59 31 3.9 2.9 0.46 <0.61 <0.94 3.5 3.30 13 <0.73 5.8 0.73 19 1.5 5.6 2.2 1.4 3.3 3.5 7.3 <0.90 <1.8 Indoor-FS 10/13/16 <1.0 1.8 <0.31 <0.38 1.6 <1.1 430 <0.47 2.1 3.0 <0.59 44 10 6.0 <0.44 <0.61 <0.94 1.8 2.10 9.7 <0.73 14 <0.61 28.0 2.0 6.0 2.2 1.9 0.8 0.90 2.3 <0.90 <1.8 Indoor-FS 6/29/16 <1.0 2.5 1.7 0.65 1.5 <1.1 130 <0.47 5.1 3 <0.59 12 1.7 <0.73 0.49 0.93 <0.94 0.89 <0.52 <0.81 <0.73 3.6 <0.61 9.7 1.2 2.8 0.97 1.5 <0.74 <0.74 0.82 <0.90 <1.8 Indoor-FS 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 330 <4.7 <5.2 17 <5.9 20 83 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 <8.1 <7.3 <6.1 <6.1 110 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-FS 12/2/15 <10 2.3 <0.31 <0.38 1.3 <1.1 440 <0.47 0.84 3.7 <0.59 24 5.2 <0.73 1.7 <0.61 <0.94 1.6 0.89 6.2 <0.73 2.4 1.1 19 1.1 4.8 1.7 1.1 <0.74 0.78 2.8 <0.90 <1.8 Indoor-FS 8/14/15 <1.0 2.7 1.5 0.81 1.1 <1.1 110 1.70 2.5 4.0 <0.59 42 2.6 <0.73 0.45 1.40 <0.94 1.6 1.4 <0.81 <0.73 4.7 <0.61 17 1.6 4.0 1.4 2.3 <0.74 <0.74 1.4 <0.90 <1.8 Indoor-FS 5/7/15 <1.0 1.2 1.1 <0.38 1.5 <1.1 240 <0.47 1.7 4.0 <0.59 24 3.5 0.8 0.55 0.90 <0.94 1.1 1.1 1 <0.73 5.1 <0.61 13 1.4 3.5 1.4 2.2 <0.74 <0.74 0.9 <0.90 <1.8 Indoor-FS 2/5/15 1.1 2.6 1.6 <0.38 1.6 1.2 240 <0.47 1.9 4.3 <0.59 <0.54 3.9 3.3 <0.44 <0.20 <0.94 2.0 1.6 <0.81 <0.73 5.7 <0.61 19 1.9 3.8 1.3 2.4 <0.74 <0.74 1.6 <0.90 <1.8 Indoor-FS 9/9/14 <1.0 2.5 1.8 <0.38 1.4 <1.1 75 <0.47 1.6 7.8 <0.59 27 1.5 <0.73 0.55 0.87 <0.94 0.83 1.3 <0.81 <0.73 5.6 <0.61 9 1.5 5.4 1.5 2.2 <0.74 <0.74 1.9 <0.90 <1.8 Indoor-FS 5/29/14 2.3 <0.74 6.9 0.61 1.0 <1.1 230 <0.47 6.6 0.63 <0.59 22 90 <0.73 <0.44 <0.61 <0.94 19 40 <0.81 <0.73 29 <0.61 72 2.3 8.9 1.5 1.3 <0.74 <0.74 0.87 <0.90 <1.8 Indoor-FS 2/11/14 49 3.1 1.2 <0.38 2.6 <1.1 1300 <0.47 2.8 15.0 <0.59 34 20 <0.73 <0.44 <0.61 <0.94 1.6 2.1 <0.81 <0.73 4.0 <0.61 48 0.98 3.3 1.1 1.4 <0.74 <0.74 1.4 <0.90 <1.8 Indoor-FS 9/3/13 1900 2.8 1.6 <0.38 0.88 <1.1 110 <0.47 1.0 3.9 <0.59 8.3 5.9 2.40 <0.44 1.30 <0.94 0.58 <0.52 <0.81 <0.73 0.99 2.3 14 <0.65 2.1 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Suite #44 Fantastic Sam's Suite #42 Melty Way Suite #40 The Mail Center Suite #38 It's All About Time Te t r a c h l o r o e t h e n e Di c h l o r o d i f l u o r o me t h a n e Ch l o r o m e t h a n e Vi n y l c h l o r i d e Fr e o n 1 1 Fr e o n 1 1 3 Ac e t o n e Ca r b o n d i s u l f i d e Me t h y l e n e ch l o r i d e 2- B u t a n o n e ci s - 1 , 2 - Di c h l o r o e t h e n e Et h y l A c e t a t e He x a n e Ch l o r o f o r m Te t r a h y d r o f u r a n 1, 2 - Di c h l o r o e t h a n e Ca r b o n te t r a c h l o r i d e Be n z e n e Cy c l o h e x a n e Tr i c h l o r o e t h e n e 1, 2 - Di c h l o r o p r o p a n e He p t a n e 4- M e t h y l - 2 - pe n t a n o n e To l u e n e Et h y l B e n z e n e m, p - X y l e n e o- X y l e n e St y r e n e 4- E t h y l t o l u e n e 1, 3 , 5 - Tr i m e t h y l b e n z e n e 1, 2 , 4 - Tr i m e t h y l b e n z e n e 1, 4 - Di c h l o r o b e n z e n e 1, 2 - Di c h l o r o b e n z e n e Table 2 Historical VOC Indoor Air Analytical Results The Shops at Fort Union Midvale, Utah VOCs* - EPA Method TO-15 Micrograms per cubic-meter (µg/m3) Lo c a t i o n Sa m p l e I D Da t e C o l l e c t e d Indoor-SB 3/22/17 <1.0 4.0 1.3 <0.38 1.4 <1.1 830 <0.47 4.3 34 <0.59 150 <0.53 0.77 <0.44 0.92 <0.94 1.1 18 1.9 <0.73 16 <0.61 160 2.8 8.6 2.7 3.2 <1.5 <1.5 1.9 <1.8 <1.8 Indoor-SB 12/9/16 <1.0 2.9 <0.31 <0.38 1.9 <1.1 660 <0.47 3.6 3.1 <0.59 110 3.4 0.78 0.54 <0.61 <0.94 3.1 3.1 5.8 <0.73 22 <0.61 26 2.1 6.2 2.4 1.3 4.6 4.4 9.3 <0.90 <1.8 Indoor-SB 10/13/16 <1.0 2.9 <0.31 <0.38 1.7 <1.1 510 <0.47 2.8 <0.44 <0.59 98 7.8 1.1 <0.44 <0.61 <0.94 2.8 2.4 3.3 <0.73 31 <0.61 29 2.3 6.8 2.3 2.1 <0.74 <0.74 1.8 <0.90 <1.8 Indoor-SB 6/29/16 <1.0 2.4 1.6 <0.38 1.3 <1.1 460 0.84 3.5 2.1 <0.59 46 1.3 1.0 <0.44 <0.61 <0.94 0.87 <0.52 <0.81 <0.73 11 0.65 10 0.94 2.6 0.93 1.6 <0.74 <0.74 1.3 <0.90 <1.8 Indoor-SB 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 740 <4.7 7.2 43 <5.9 77 <5.3 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 <8.1 <7.3 16 <6.1 92 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-SB 12/2/15 <1.0 1.7 1.1 <0.38 1.3 <1.1 830 <0.47 1.5 2.6 <0.59 82 3.9 1.7 0.74 <0.61 <0.94 2.0 1.2 3.5 <0.73 8.8 0.83 20 2.0 7.6 2.0 1.5 1.3 1.6 6.2 <0.90 <1.8 Indoor-SB 8/14/15 <1.0 3.2 <0.31 <0.38 1.3 <1.1 410 <0.47 3.0 5 <0.59 150 <0.53 1.30 0.93 1.00 <0.94 0.56 <0.52 0.96 <0.73 14 <0.61 20 1.6 3.7 1.2 2.9 <0.74 <0.74 1.1 <0.90 <1.8 Indoor-SB 5/7/15 <1.0 2.4 1.3 <0.38 1.9 <1.1 680 4.30 26.0 5 <0.59 110 2.7 2.20 2.20 1.30 <0.94 0.9 1.7 <0.81 <0.73 16 1.00 18 2.3 6.0 2.7 2.9 <0.74 <0.74 1.0 <0.90 <1.8 Indoor-SB 2/5/15 5.0 2.4 1.4 <0.38 1.4 <1.1 410 <0.47 4.8 11 <0.59 210 2.8 7.70 1.50 <0.20 <0.94 1.7 1.9 <0.81 <0.73 24 <0.61 22 1.9 4.3 1.6 2.5 <0.74 <0.74 1.3 <0.90 <1.8 Indoor-SB 9/9/14 <1.0 2.5 1.6 <0.38 1.3 <1.1 160 0.47 3.0 19 <0.59 26 1.3 1.30 0.97 <0.61 <0.94 0.84 1.2 <0.81 <0.74 13 0.61 9 1.7 4.6 1.2 2.2 <0.74 <0.74 1.5 <0.90 <1.8 Indoor-SB 5/29/14 1.7 3.3 1.2 <0.38 1.0 <1.1 580 <0.47 8.8 21 <0.59 54 110 <0.73 <0.44 <0.82 <0.94 23 59 <0.81 <0.73 59 <0.61 79 3.6 8.8 2.3 1.3 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-SB 2/11/14 21 3.0 1.4 <0.38 2.2 <1.1 11000 <0.47 3.1 26 <0.59 100 8.5 <0.73 1.90 <0.82 <0.94 1.8 2.2 <0.81 <0.73 9.9 <0.61 31 1.5 5.0 1.5 1.1 <0.74 <0.74 1.8 <0.90 <1.8 Indoor-SB 9/3/13 1300 2.8 1.5 0.59 1.5 <1.1 780 1.7 3.4 35 <0.59 74 7.4 0.79 1.00 1.10 <0.94 0.84 1.8 <0.81 <0.73 18 1.7 72 0.84 2.8 0.87 0.83 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-OM 5/7/15 <1.0 2.3 1.0 <0.38 1.4 <1.1 23 <0.47 1.3 1.1 <0.59 2.4 1.1 <0.73 <0.44 <0.61 <0.94 <0.48 <0.52 <0.81 <0.73 1.4 <0.61 5 1.2 2.3 0.9 1.7 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-OM 2/5/15 <1.0 3.4 1.4 <0.38 2.3 2.4 46 <0.47 2.5 2.6 <0.59 <0.54 3.5 0.42 <0.44 <0.20 <0.94 1.4 2.0 <0.81 <0.73 4.2 <0.61 16 3.2 5.1 1.9 5.2 <0.74 <0.74 0.93 <0.90 <1.8 Indoor-OM 9/9/14 <1.0 2.1 1.4 <0.38 1.1 <1.1 39 0.54 6.7 4.3 <0.59 1.8 5.9 <0.73 <0.44 <0.61 <0.94 2.1 3.6 <0.81 <0.73 3.2 1.0 14 2.1 8.1 2.6 1.4 <0.74 <0.74 2.7 <0.90 <1.8 Indoor-OM 5/29/14 <1.0 2.5 0.96 <0.38 0.97 <1.1 48 <0.47 7.1 <0.44 <0.59 1.3 68 <0.73 <0.44 <0.61 <0.94 13 32 <0.81 <0.73 23 <0.61 43 1.3 5.1 1.2 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-OM 2/11/14 45 5.4 1.4 <0.38 3.8 1.7 260 34 5.7 4.5 <0.59 9.0 13 1.00 <0.44 1.40 <0.94 1.5 2.9 <0.81 6.1 3.8 <0.61 34 2.1 4.4 1.4 3.6 <0.74 <0.74 1.1 <0.90 <1.8 Indoor-OM 9/3/13 57 2.9 1.7 <0.38 1.4 <1.1 30 <0.47 2.8 1.7 1.7 1.5 0.91 3.30 <0.44 <0.61 <0.94 <0.48 1.2 2.6 <0.73 2.5 <0.61 3 <0.65 1.6 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-U 3/22/17 <1.0 2.0 1.3 <0.38 1.3 <1.1 79 <0.47 20 1.9 <0.59 <1.1 0.70 <0.73 <0.44 <0.61 <0.94 0.54 <0.52 <0.81 <0.73 <0.61 <0.61 4.4 <0.65 0.86 <0.65 <1.3 <1.5 <1.5 <1.5 <1.8 <1.8 Indoor-U 12/9/16 <1.0 2.9 <0.31 <0.38 2.6 <1.1 530 <0.47 52 3.4 <0.59 49 46.0 <0.73 2.9 <0.61 <0.94 75 8.4 <0.81 <0.73 17 <0.61 290 22 120 32 <0.64 15 16 43 <0.90 <1.8 Indoor-U 10/13/16 <1.0 2.9 <0.31 <0.38 1.8 <1.1 340 0.64 24 5.2 <0.59 1200 4.3 <0.73 0.99 <0.61 <0.94 2.2 0.91 <0.81 <0.73 8.8 <0.61 14 1.4 5.6 1.7 0.79 <0.74 <0.74 1.3 <0.90 <1.8 Indoor-U 6/29/16 <1.0 2.5 1.4 <0.38 1.6 <1.1 31 <0.47 9.5 1.7 <0.59 14 0.58 <0.73 <0.44 <0.61 <0.94 <0.48 <0.52 <0.81 <0.73 <0.61 <0.61 2.3 <0.65 0.73 <0.65 <0.64 <0.74 <0.74 <0.74 <0.90 <1.8 Indoor-U 3/2/16 <10 <7.4 <3.1 <3.8 <8.4 <11 63 <4.7 13 <4.4 <5.9 8.6 <5.3 <7.3 <4.4 <6.1 <9.4 <4.8 <5.2 <8.1 <7.3 <6.1 <6.1 8.6 <6.5 <6.5 <6.5 <6.4 <7.4 <7.4 <7.4 <9.0 <18 Indoor-U 12/2/15 <1.0 2.3 1.2 <0.38 1.2 <1.1 83 <0.47 6.0 2.4 <0.59 19 1.4 <0.73 <0.44 <0.61 <0.94 1.1 <0.52 <0.81 <0.73 1.3 <0.61 8.5 0.98 4.2 1.5 0.68 <0.74 0.85 2.8 <0.90 <1.8 Indoor-U 8/14/15 <1.0 2.5 1.6 <0.38 1.2 <1.1 140 <0.47 10 4.5 <0.59 21.0 0.81 <0.73 <0.44 <0.61 <0.94 <0.48 0.62 <0.81 <0.73 0.7 1.0 6 <0.65 1.2 <0.65 <0.64 <0.74 <0.74 0.96 <0.90 <1.8 Indoor-U 5/7/15 <1.0 2.4 1.1 <0.38 1.4 <1.1 160 <0.47 9.7 3.5 <0.59 32.0 1.30 <0.73 <0.44 <0.61 <0.94 0.58 0.52 <0.81 <0.73 1.6 1.5 9 1.4 3.3 1.3 2 <0.74 <0.74 1.5 <0.90 <1.8 Indoor-U 2/5/15 3.7 2.5 1.3 <0.38 1.3 <1.1 80 <0.47 11 3.3 <0.59 <0.54 2.00 0.69 <0.44 <0.20 <0.94 1.3 1.2 <0.81 <0.73 2.1 0.88 10 1.5 3.5 1.3 2.2 <0.74 <0.74 1.9 <0.90 <1.8 Indoor-U 9/9/14 <1.0 2.1 1.5 <0.38 1.1 <1.1 30 0.49 7.1 1.8 <0.59 7.0 2.90 <0.73 <0.44 <0.61 <0.94 1.2 1.7 <0.81 <0.73 1.3 0.95 7 0.99 4.5 1.4 <0.64 <0.74 <0.74 2.1 <0.90 <1.8 Indoor-U 5/29/14 <1.0 2.8 1.3 <0.38 0.89 <1.1 44 <0.47 20 4.2 <0.59 17 64.00 <0.73 <0.44 <0.61 <0.94 12 28 <0.81 <0.73 17 <0.61 38 1.2 5.1 1.3 <0.64 <0.74 <0.74 1.0 <0.90 <1.8 Indoor-U 2/11/14 6.9 3.7 1.6 <0.38 2.4 <1.1 260 <0.47 19 <0.44 <0.59 18 <0.53 <0.73 <0.44 <0.61 <0.94 1.0 2.2 1.6 <0.73 1.4 <0.61 11 0.74 2.7 0.91 0.79 <0.74 <0.74 1.6 <0.90 <1.8 Indoor-U 8/8/13 <1.0 --------------------------------0.51 ------------------------------ Indoor-S 5/7/15 <1.0 2.0 1.7 <0.38 1.4 <1.1 29 <0.47 2.3 1.6 <0.59 9.2 0.98 <0.73 <0.44 1.90 <0.94 0.62 <0.52 <0.81 <0.73 0.86 0.63 4 <0.65 2 0.67 1.10 <0.74 <0.74 <0.74 1.9 1.9 Indoor-S 2/5/15 <1.0 2.4 1.5 <0.38 1.6 <1.1 57 <0.47 3.3 2.3 <0.59 <0.54 1.8 0.69 5.40 <0.20 <0.94 1.7 1.0 <0.81 <0.73 0.94 <0.61 21 0.93 3.9 1.2 0.88 <0.74 <0.74 2.0 3.7 3.5 Indoor-S 9/9/14 <1.0 3.0 2.0 <0.38 1.6 <1.1 38 0.51 5.4 1.7 <0.59 8.0 1.4 <0.73 <0.44 <0.73 <0.94 0.88 0.83 <0.81 <0.73 0.95 0.72 6 <0.65 2.8 0.97 0.90 0.84 0.82 3.1 4.1 <1.8 Indoor-S 5/29/14 <1.0 2.4 1.2 <0.38 1.3 <1.1 23 <0.47 3.6 2.8 <0.59 9.8 26 <0.73 <0.44 <0.61 <0.94 5.6 8.6 <0.81 <0.73 4.8 <0.61 12 <0.65 1.8 <0.65 <0.64 <0.74 <0.74 1.2 1.8 <1.8 Indoor-S 2/11/14 1.7 4.1 1.8 <0.38 3.0 <1.1 38 <0.47 1.3 <0.44 <0.59 3.0 1.0 <0.73 <0.44 <0.61 1.00 1.3 1.4 <0.81 <0.73 0.71 <0.61 5 0.82 4.8 0.85 <0.64 <0.74 <0.74 1.2 5.5 <1.8 Indoor-S 9/3/13 <1.0 2.9 1.6 <0.38 1.7 <1.1 34 <0.47 2.4 2.7 <0.59 7.5 0.71 0.91 <0.44 <0.61 <0.94 <0.48 <0.52 <0.81 <0.73 <0.61 <0.61 2 <0.65 2.1 0.66 0.75 <0.74 <0.74 <0.74 <0.90 <1.8 47 440 390 2.80 3,100 130,000 140,000 3,100 1,200 22,000 NE 310 3,100 0.53 8800.00 0.47 2.00 1.6 26,000 3.0 1.2 NE 13,000 22000 4.9 440 440 4,400 NE NE 31 1.1 880 NE - Not Established VISL = US EPA May 2016 Commercial Vapor Intrusion Screening Level, THQ=1 (ug/m3) *Only those analytes actually detected in at least one sample are tabulated Suite #56 Smith's Food and Drug Suite #52 Ulta Beauty Suite #50 Office Max Values in bold indicate concentrations above respective VISLs VISL Suite #46 Sally Beauty Supply SUMMARY REPORT FOR AUGUST 2023 INDOOR AIR SAMPLING EVENT Appendices October 18, 2023 V//230706007/05-reports/delivs/2023/augSumRept Appendix A Copy of ALS Air Sampling Laboratory Result Report ANALYTICAL REPORT John G. Russell Stantec 3995 S 700 E Salt Lake City, UT 84107 Phone: Fax: E-mail: (801) 943-4144 (801) 942-1852 John.RussellIII@stantec.com Report Date:August 16, 2023 34-2322159Workorder: DDR 203706007Purchase Order: Project ID: Project Manager Lisa M. Reid Sampling SiteReceive DateCollect DateLab IDClient Sample ID 2322159001 08/08/23(1) AT 08/09/23 DDR 2322159002 08/08/23(4) DC 08/09/23 DDR 2322159003 08/08/23(8) FS 08/09/23 DDR 2322159004 08/08/23(7) GN 08/09/23 DDR 2322159005 08/08/23(6) MC 08/09/23 DDR 2322159006 08/08/23(3) MWJD 08/09/23 DDR 2322159007 08/08/23(2) SB 08/09/23 DDR 2322159008 08/08/23(5) SR 08/09/23 DDR Page 1 of 6 Wed, 08/16/23 10:14 AM ENVREP-V4.8 ADDRESS 960 West LeVoy Drive, Salt Lake City, Utah, 84123 USA PHONE FAX+1 801 266 7700 +1 801 268 9992 ALS GROUP USA, CORP.An ALS Limited Company ||WEB|http://www.alsglobal.com/slt ANALYTICAL REPORT Project Manager:Lisa M. Reid Client:Stantec Consulting Services, Inc. Workorder:34-2322159 Analytical Results Sample ID:08/08/2023 08/09/20232322159001Lab ID: Collected: Received: (1) AT DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 15:12 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 10.460.12 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 13.40.63 0.050Trichloroethene 1<0.34ND 0.050Tetrachloroethene Sample ID:08/08/2023 08/09/20232322159002Lab ID: Collected: Received: (4) DC DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 15:47 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 10.210.052 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 11.20.23 0.050Trichloroethene 1<0.34ND 0.050Tetrachloroethene Sample ID:08/08/2023 08/09/20232322159003Lab ID: Collected: Received: (8) FS DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 16:23 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 1<0.20ND 0.050trans-1,2-Dichloroethene Page 2 of 6 Wed, 08/16/23 10:14 AM ENVREP-V4.8 Results Continued on Next Page ANALYTICAL REPORT Project Manager:Lisa M. Reid Client:Stantec Consulting Services, Inc. Workorder:34-2322159 Analytical Results Sample ID:08/08/2023 08/09/20232322159003Lab ID: Collected: Received: (8) FS DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 16:23 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 10.660.12 0.050Trichloroethene 1<0.34ND 0.050Tetrachloroethene Sample ID:08/08/2023 08/09/20232322159004Lab ID: Collected: Received: (7) GN DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 16:58 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 1<0.20ND 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 10.750.14 0.050Trichloroethene 1<0.34ND 0.050Tetrachloroethene Sample ID:08/08/2023 08/09/20232322159005Lab ID: Collected: Received: (6) MC DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 17:33 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 10.320.081 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane Page 3 of 6 Wed, 08/16/23 10:14 AM ENVREP-V4.8 Results Continued on Next Page ANALYTICAL REPORT Project Manager:Lisa M. Reid Client:Stantec Consulting Services, Inc. Workorder:34-2322159 Analytical Results Sample ID:08/08/2023 08/09/20232322159005Lab ID: Collected: Received: (6) MC DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 17:33 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 11.80.33 0.050Trichloroethene 10.690.10 0.050Tetrachloroethene Sample ID:08/08/2023 08/09/20232322159006Lab ID: Collected: Received: (3) MWJD DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 18:08 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 1<0.20ND 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 10.280.051 0.050Trichloroethene 1<0.34ND 0.050Tetrachloroethene Sample ID:08/08/2023 08/09/20232322159007Lab ID: Collected: Received: (2) SB DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 18:43 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 1<0.20ND 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 1<0.27ND 0.050Trichloroethene 10.410.061 0.050Tetrachloroethene Page 4 of 6 Wed, 08/16/23 10:14 AM ENVREP-V4.8 ANALYTICAL REPORT Project Manager:Lisa M. Reid Client:Stantec Consulting Services, Inc. Workorder:34-2322159 Analytical Results Sample ID:08/08/2023 08/09/20232322159008Lab ID: Collected: Received: (5) SR DDR Sampling Parameter:NAMatrix: Media: Air Summa 6 Liter Canister Sampling Site: Analysis:EPA TO-15 SIM, Air Analyzed:08/15/2023 19:19 Batch: Instrument ID: IVOA/6273 (HBN: 309752) 5975-LPreparation:Not Applicable Result (ppb)Analyte Result (ug/m³)RL (ppb)Dilution Qual Analysis Method - EPA TO-15 SIM by IH-AN-014 1<0.13ND 0.050Vinyl chloride 10.260.066 0.050trans-1,2-Dichloroethene 1<0.20ND 0.050cis-1,2-Dichloroethene 1<0.20ND 0.0501,2-Dichloroethane 11.60.30 0.050Trichloroethene 10.580.085 0.050Tetrachloroethene Comments Quality Control:EPA TO-15 SIM by IH-AN-014 - (Batch: 309752) The percent difference for target compounds in the CCV standard must be less than 30% relative to the target. The following compounds did not meet this criteria: Vinyl Chloride and 1,2-Dichloroethane. Not all compounds in the LCS/LCSD were within performance limits. This is not a method requirement. Report Authorization Analyst Peer ReviewMethod (/S/ is an electronic signature that complies with 21 CFR Part 11) EPA TO-15 SIM by IH-AN-014 (309752)/S/ Paul Kelly 08/16/2023 09:22 08/16/2023 10:06 /S/ Thomas J. Masoian Laboratory Contact Information (801) 266-7700 alslt.lab@ALSGlobal.com www.alsglobal.com/slt ALS Environmental 960 W Levoy Drive Salt Lake City, Utah 84123 Phone: Email: Web: Page 5 of 6 Wed, 08/16/23 10:14 AM ENVREP-V4.8 ANALYTICAL REPORT Project Manager:Lisa M. Reid Client:Stantec Consulting Services, Inc. Workorder:34-2322159 General Lab Comments The results provided in this report relate only to the items tested. Samples were received in acceptable condition unless otherwise noted. The following was provided by the client: Sample ID, Collection Date, Sampling Location, Media Type, Sampling Parameter. Collection Date, Media Type, and Sampling Parameter can potentially affect the validity of the results. Samples have not been blank corrected unless otherwise noted. This test report shall not be reproduced, except in full, without written approval of ALS. ALS provides professional analytical services for all samples submitted. ALS is not in a position to interpret the data and assumes no responsibility for the quality of the samples submitted. All quality control samples processed with the samples in this report yielded acceptable results unless otherwise noted. ALS is accredited for specific fields of testing (scopes) in the following testing sectors. The quality system implemented at ALS conforms to accreditation requirements and is applied to all analytical testing performed by ALS. The following table lists testing sector, accreditation body, accreditation number and website. Please contact these accrediting bodies or your ALS project manager for the current scope of accreditation that applies to your analytical testing. Testing Sector Accreditation Body (Standard) Certificate Number Website Industrial Hygiene AIHA (ISO 17025 & AIHA IHLAP) 101574 http://www.aihaaccreditedlabs.org DOECAP-AP L22-62 http://www.pjlabs.com Washington C596 https://ecology.wa.gov/Regulations-Permits/Permits-certifications/Lab oratory-Accreditation Dietary Supplements PJLA (ISO 17025) L22-61 http://www.pjlabs.com MDL = Method Detection Limit, a statistical estimate of method/media/instrument sensitivity. RL = Reporting Limit, a verified value of method/media/instrument sensitivity. CRDL = Contract Required Detection Limit Reg. Limit = Regulatory Limit. ND = Not Detected, testing result not detected above the MDL or RL. < Means this testing result is less than the numerical value. ** No result could be reported, see sample comments for details. U = Qualifier indicates that the analyte was not detected above the MDL. J = Qualifier Indicates that the analyte value is between the MDL and the RL. It is also used to indicate an estimated value for B = Qualifier indicates that the analyte was detected in the blank. E = Qualifier indicates that the analyte result exceeds calibration range. P = Qualifier indicates that the RPD between the two columns is greater than 40%. Result Symbol Definitions Qualifier Symbol Definitions tentatively identified compounds in mass spectrometry where a 1:1 response is assumed. Q = Qualifier indicates that the analyte was outside the limits in a lab QC sample. Page 6 of 6 Wed, 08/16/23 10:14 AM ENVREP-V4.8 Analysis: Analyzed By: IVOA/6273 (HBN: 309752) Paul Kelly Workorder:2322159 EPA TO-15 SIM by IH-AN-014 Batch:NA Prepared By:NA Batch: Preparation:NAHistorical/Performance ALS Laboratory Group Limits: Basis: Analysis Information Blank MB: Analyzed: Units: Analyte Result MDL RL 831252 08/15/2023 14:21 ppb Vinyl chloride NA 0.0500ND trans-1,2-Dichloroethene NA 0.0500ND cis-1,2-Dichloroethene NA 0.0500ND 1,2-Dichloroethane NA 0.0500ND Trichloroethene NA 0.0500ND Tetrachloroethene NA 0.0500ND Laboratory Control Sample - Laboratory Control Sample Duplicate Dilution:1 ppb Analyte Result % Rec QC Limits LCS: Analyzed: 831253 08/15/2023 12:20 Units: Target 08/15/2023 13:09 831254LCSD: Analyzed: Result RPD QC Limits% Rec Units:ppb Dilution:1 0.332 25.00.02.1866.5144.466.967.90.5000.340Vinyl chloride 0.448 25.00.01.7789.7126.469.588.10.5000.440trans-1,2-Dichloroethene 0.452 25.00.01.7390.4167.452.288.90.5000.444cis-1,2-Dichloroethene 0.343 25.00.03.0168.5141.962.466.50.5000.3321,2-Dichloroethane 0.440 25.00.04.3988.0166.633.884.20.5000.421Trichloroethene 0.491 25.00.011.298.3128.961.487.80.5000.439Tetrachloroethene Comments The percent difference for target compounds in the CCV standard must be less than 30% relative to the target. The following compounds did not meet this criteria: Vinyl Chloride and 1,2-Dichloroethane. Not all compounds in the LCS/LCSD were within performance limits. This is not a method requirement. Page 1 of 2 8/16/2023 10:14:00 AM Quality Control Sample Batch Report QCS V5.0 ADDRESS 960 West LeVoy Drive, Salt Lake City, Utah, 84123 USA PHONE FAX+1 801 266 7700 +1 801 268 9992 ALS GROUP USA, CORP.An ALS Limited Company ||WEB|http://www.alsglobal.com/slt Analysis: Analyzed By: IVOA/6273 (HBN: 309752) Paul Kelly Workorder:2322159 EPA TO-15 SIM by IH-AN-014 Batch:NA Prepared By:NA Batch: Preparation:NAHistorical/Performance ALS Laboratory Group Limits: Basis: Analysis Information QC Report Authorization (/S/ is an electronic signature that complies with 21 CFR Part 11) Analyst Peer ReviewWorkorder - Sample result is greater than 4 times the spike added - Analyte above reporting limit or outside of control limits Symbols and Definitions RPD - Relative % Difference (Spike / Spike Duplicate) ND - Not Detected (U - Qualifier also flags analyte as not detected) QC results are not adjusted for moisture correction, where applicable - Sample and Matrix Duplicate less than 5 times the reporting limit NA - Not Applicable - Result is above the calibration range The Matrix Spike, Matrix Spike duplicate or Matrix Duplicate is reported for your information only. The sample matrix may be inappropriate for the method selected. #- /S/ Paul Kelly /S/ Thomas J. Masoian 08/16/2023 09:22 08/16/2023 10:062322159 Page 2 of 2 8/16/2023 10:14:00 AM Quality Control Sample Batch Report QCS V5.0 Client Samp Lab Sample ID Laboratory SDG Matri Date Collected Date Received Date Analyzed Analytical Method CAS Number Analyte Name Result Flags Result Units Result QDiluti QL RL QC Group Amoun Duplicat % Recov Relativ Minimu Maxim Maxim Result Procedure Code (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.12 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.46 ug/m³1 0.2 0.2 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.63 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 3.4 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (1) AT 2322159001 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:12 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.34 ug/m³U 1 0.34 0.34 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.052 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.21 ug/m³1 0.2 0.2 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.23 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 1.2 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (4) DC 2322159002 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 15:47 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.34 ug/m³U 1 0.34 0.34 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.12 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.66 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (8) FS 2322159003 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:23 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.34 ug/m³U 1 0.34 0.34 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.14 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.75 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (7) GN 2322159004 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 16:58 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.34 ug/m³U 1 0.34 0.34 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.081 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.32 ug/m³1 0.2 0.2 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.33 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 1.8 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.1 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (6) MC 2322159005 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 17:33 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.69 ug/m³1 0.34 0.34 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.051 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.28 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (3) MWJD 2322159006 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:08 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.34 ug/m³U 1 0.34 0.34 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichlor <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichlor <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 79-01-6 Trichloroethene <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 79-01-6 Trichloroethene <<0.27 ug/m³U 1 0.27 0.27 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.061 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (2) SB 2322159007 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 18:43 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.41 ug/m³1 0.34 0.34 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.13 ug/m³U 1 0.13 0.13 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.066 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.26 ug/m³1 0.2 0.2 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.050 ppb U 1 0.05 0.05 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.20 ug/m³U 1 0.2 0.2 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.3 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 1.6 ug/m³1 0.27 0.27 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.085 ppb 1 0.05 0.05 309752 TRG ETO15SIM.1 (5) SR 2322159008 ALS-SLC 2322159 Air 8/8/2023 0:00 8/9/2023 15:03 8/15/2023 19:19 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.58 ug/m³1 0.34 0.34 309752 TRG ETO15SIM.1 LAB QC 831252 ALS-SLC 2322159 Air MB 8/15/2023 14:21 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride <<0.05 ppb U 1 0.05 0.05 309752 TRG ETO15SIM1Q LAB QC 831252 ALS-SLC 2322159 Air MB 8/15/2023 14:21 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichlor <<0.05 ppb U 1 0.05 0.05 309752 TRG ETO15SIM1Q LAB QC 831252 ALS-SLC 2322159 Air MB 8/15/2023 14:21 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroe <<0.05 ppb U 1 0.05 0.05 309752 TRG ETO15SIM1Q LAB QC 831252 ALS-SLC 2322159 Air MB 8/15/2023 14:21 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroetha <<0.05 ppb U 1 0.05 0.05 309752 TRG ETO15SIM1Q LAB QC 831252 ALS-SLC 2322159 Air MB 8/15/2023 14:21 EPA TO-15 SIM, Air 79-01-6 Trichloroethene <<0.05 ppb U 1 0.05 0.05 309752 TRG ETO15SIM1Q LAB QC 831252 ALS-SLC 2322159 Air MB 8/15/2023 14:21 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethen<<0.05 ppb U 1 0.05 0.05 309752 TRG ETO15SIM1Q LAB QC 831253 ALS-SLC 2322159 Air LCS 8/15/2023 12:20 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride 0.34 ppb 1 0.05 0.05 309752 0.5 67.9 66.9 144 SC ETO15SIM1Q LAB QC 831253 ALS-SLC 2322159 Air LCS 8/15/2023 12:20 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.44 ppb 1 0.05 0.05 309752 0.5 88.1 69.5 126 SC ETO15SIM1Q LAB QC 831253 ALS-SLC 2322159 Air LCS 8/15/2023 12:20 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroethene 0.444 ppb 1 0.05 0.05 309752 0.5 88.9 52.2 167 SC ETO15SIM1Q LAB QC 831253 ALS-SLC 2322159 Air LCS 8/15/2023 12:20 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroethane 0.332 ppb 1 0.05 0.05 309752 0.5 66.5 62.4 142 SC ETO15SIM1Q LAB QC 831253 ALS-SLC 2322159 Air LCS 8/15/2023 12:20 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.421 ppb 1 0.05 0.05 309752 0.5 84.2 33.8 167 SC ETO15SIM1Q LAB QC 831253 ALS-SLC 2322159 Air LCS 8/15/2023 12:20 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.439 ppb 1 0.05 0.05 309752 0.5 87.8 61.4 129 SC ETO15SIM1Q LAB QC 831254 ALS-SLC 2322159 Air LCSD 8/15/2023 13:09 EPA TO-15 SIM, Air 75-01-4 Vinyl chloride 0.332 ppb 1 0.05 0.05 309752 0.5 0.34 66.5 2.18 66.9 144 25 SC ETO15SIM1Q LAB QC 831254 ALS-SLC 2322159 Air LCSD 8/15/2023 13:09 EPA TO-15 SIM, Air 156-60-5 trans-1,2-Dichloroethene 0.448 ppb 1 0.05 0.05 309752 0.5 0.44 89.7 1.77 69.5 126 25 SC ETO15SIM1Q LAB QC 831254 ALS-SLC 2322159 Air LCSD 8/15/2023 13:09 EPA TO-15 SIM, Air 156-59-2 cis-1,2-Dichloroethene 0.452 ppb 1 0.05 0.05 309752 0.5 0.444 90.4 1.73 52.2 167 25 SC ETO15SIM1Q LAB QC 831254 ALS-SLC 2322159 Air LCSD 8/15/2023 13:09 EPA TO-15 SIM, Air 107-06-2 1,2-Dichloroethane 0.343 ppb 1 0.05 0.05 309752 0.5 0.332 68.5 3.01 62.4 142 25 SC ETO15SIM1Q LAB QC 831254 ALS-SLC 2322159 Air LCSD 8/15/2023 13:09 EPA TO-15 SIM, Air 79-01-6 Trichloroethene 0.44 ppb 1 0.05 0.05 309752 0.5 0.421 88 4.39 33.8 167 25 SC ETO15SIM1Q LAB QC 831254 ALS-SLC 2322159 Air LCSD 8/15/2023 13:09 EPA TO-15 SIM, Air 127-18-4 Tetrachloroethene 0.491 ppb 1 0.05 0.05 309752 0.5 0.439 98.3 11.2 61.4 129 25 SC ETO15SIM1Q