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HomeMy WebLinkAbout8.2 A RESOLUTION APPROVING THE PURCHASE OF REAL PROPERTY AND AUTHORIZING EXECUTION OF PROPERTY PURCHASE AND SALES CONTRACT (310 W. NORTHWEST HIGHWAY)M+awn �'xytlts=e Item Cover Page Subject A RESOLUTION APPROVING THE PURCHASE OF REAL PROPERTY AND AUTHORIZING EXECUTION OF PROPERTY PURCHASE AND SALES CONTRACT (310 W. NORTHWEST HIGHWAY) Meeting May 7, 2024 - REGULAR MEETING OF THE MOUNT PROSPECT VILLAGE BOARD Fiscal Impact (Y/N) Y Dollar Amount $800,000 Budget Source TIF fund Category NEW BUSINESS Type Action Item Information The Village is seeking to acquire the property at 310 W. Northwest Highway to create a downtown plaza. The current property owner is in the process of winding down the auto repair business. The transaction will be for $800,000, with a hold -back of $100,000 in escrow for expenses related to completion of a No Further Remediation Letter from the IEPA. The property will close in June, but post -closing possession will continue through November 30, 2024. The source of funds to acquire, remediate and redevelop the plaza will be from the Prospect and Main TIF. The Phase II site investigation is attached. The contract is subject to final attorney review. Discussion Alternatives 1. Motion to approve the resolution approving the purchase of real property and authorizing execution of a property purchase and sales contract for 310 W. Northwest Highway, subject to final attorney review. 2. Action at the discretion of the Village Board. Staff Recommendation Authorize the Village Manager to execute a Purchase and Sale Agreement for the property located at 310 W. Northwest Highway for the amount of $800,000, subject to final attorney review. Attachments 1. Resolution authorizing purchase and sale agreement for 310 W. Northwest Highway - 02.24 2. T242906.3 VOMO_FormulaAutoRepair_PhaselIESA DRAFT RESOLUTION NO. A RESOLUTION APPROVING THE PURCHASE OF REAL PROPERTY AND AUTHORIZING EXECUTION OF PROPERTY PURCHASE AND SALES CONTRACT (310 W. NORTHWEST HIGHWAY, MOUNT PROSPECT, ILLINOIS) WHEREAS, the Village of Mount Prospect, Illinois ("Village") is a home rule unit of local government pursuant to Article 7, Section 6 of the Constitution of the State of Illinois; and WHEREAS, pursuant to Article 7, Section 6 of the Illinois Constitution, the Village, as a home rule municipality, is authorized to enter into contracts for the sale and purchase of real property; and WHEREAS, the Board of Trustees of the Village has determined it is necessary and desirable to purchase certain real property commonly known as 310 W. Northwest Highway, Mount Prospect, Illinois, with a Property Index Number of 08-11-204-015-0000 (the "Subject Property"), as legally described in Exhibit A, attached hereto and made a part hereof, and to execute a Property Purchase and Sales Contract (the "Contract") relative to the purchase of the Subject Property, a copy of which is attached hereto as Exhibit B and made a part hereof; and WHEREAS, the Village and the Seller of the Subject Property, "Pentz Living Trust, Dated April 5, 1996," have agreed to a purchase price of $800,000 for the Subject Property; and WHEREAS, the Village has determined that the purchase of the Subject Property by the Village is for a reasonable price and is in the best interests of the Village. NOW THEREFORE, BE IT RESOLVED BY THE MAYOR AND BOARD OF TRUSTEES OF THE VILLAGE OF MOUNT PROSPECT, COOK COUNTY, ILLINOIS AS FOLLOWS: SECTION ONE: That the recitals set forth hereinabove are hereby adopted and incorporated as if fully set forth herein. SECTION TWO: That under the authority vested in the corporate authorities of the Village, pursuant to Article 7, Section 6 of the Illinois Constitution, it is desirable for the Village to purchase the Subject Property described in Exhibit A in accordance with the terms and conditions set forth in the Contract attached as Exhibit B. SECTION THREE: The Village President, Village Clerk and Village Manager, or their designees, are authorized and directed to sign and execute the Contract for the purchase of the Subject Property substantially in the form attached as Exhibit B. Any minor amendments to the Contract made hereinafter shall be subject to the approval of the Village Manager without further action of the Board of Trustees. SECTION FOUR: The Village President, Village Clerk and Village Manager, or their designees, are authorized and directed to purchase the Subject Property pursuant to the terms and conditions set forth in the Contract and are further authorized and directed to execute and deliver such other instruments as may be necessary or convenient to consummate such purchase. 576556_1 SECTION FIVE: This Resolution shall be in full force and effect immediately upon its adoption. ADOPTED this day of February, 2024, pursuant to a roll call vote as follows: AYES: NAYS: ABSENT: APPROVED this 6TH day of February, 2024, by the Village President of the Village of Mount Prospect, and attested by the Village Clerk, on the same day. Mayor Paul Wm. Hoefert ATTEST: Karen Agoranos, Village Clerk 576556_1 EXHIBIT A Legal Description of the Subject Property LOT 1 IN WINKELMANN'S RESUBDIVISION OF LOTS 1, 2, 3,4 AND 5 IN HENRY J. EHARD'S SUBDIVISION OF THAT PART OF THE NORTHEAST '/4 OF SECTION 11, TOWNSHIP 41 NORTH, RANGE 11 EAST OF THE THIRD PRINCIPAL MERIDIAN, LYING NORTH OF THE CHICAGO AND NORTHWESTERN RAILROAD COMPANY'S RIGHT-OF-WAY, IN COOK COUNTY, ILLINOIS. PROPERTY ADDRESS: 310W. NORTHWEST HIGHWAY, MOUNT PROSPECT, ILLINOIS PERMANENT INDEX NUMBER: 08-11-204-015-0000 576556_1 EXHIBIT B PROPERTY PURCHASE AND SALES CONTRACT 310 W. NORTHWEST HIGHWAY, MOUNT PROSPECT, ILLINOIS (attached) 576556_1 Iirepairfad ::OF'�� Village of Mount Prospect 50 South rnersoiri Street \A(KH-11t, �roqpect, II Ill r16s 60056 �::�)repared bo True North Consultants, Inc. 10(0 II ast Wa irir invr lHe II load,, SiAte '140 \Jq'-)ei'vilHe, IllHHin6s, 605163 Phone: 630.717.2880 TABLE OF CONTENTS 1.0 EXECUTIVE SUMMARY...................................................................................................................1 2.0 INTRODUCTION................................................................................................................................ 4 3.0 LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT.........................................................7 3.1 SITE LOCATION AND LEGAL DESCRIPTION.......................................................................................... 7 3.2 CURRENT/FUTURE SITE OPERATIONS................................................................................................ 7 4.0 TRUE NORTH SITE INVESTIGATION ACTIVITIES.........................................................................8 4.1 PRIVATE UTILITYLOCATEAND GROUND PENETRATING RADAR SURVEY .............................................. 8 4.2 DESCRIPTION OF SAMPLING PLAN...................................................................................................... 8 4.3 METHODS OF SAMPLING.................................................................................................................... 9 4.3.1 SOIL SAMPLING................................................................................................................................. 9 4.3.2 GROUNDWATER SAMPLING.............................................................................................................. 10 4.3.3 SOIL GAS SAMPLING....................................................................................................................... 10 4.4 ANALYTICAL METHODS.................................................................................................................... 11 4.5 FIELD ACTIVITYDOCUMENTATION....................................................................................................11 5.0 DATA COLLECTION QUALITY ASSURANCE..............................................................................15 5.1 DATA QUALITY OBJECTIVES............................................................................................................ 15 5.2 GENERAL FIELD PROCEDURES........................................................................................................ 15 5.2.1 EQUIPMENT & CALIBRATION............................................................................................................ 15 5.2.2 SAMPLE HANDLING......................................................................................................................... 16 5.2.3 SAMPLE DELIVERY.......................................................................................................................... 17 5.2.4 DECONTAMINATION PROTOCOL........................................................................................................ 17 6.0 DATA EVALUATION AND ENDANGERMENT ASSESSMENT....................................................18 6.1 SOIL ANALYTICAL DATA EVALUATION............................................................................................... 18 6.2 GROUNDWATER ANALYTICAL DATA EVALUATION.............................................................................. 18 6.3 SOIL GAS ANALYTICAL DATA EVALUATION........................................................................................ 19 7.0 FINDINGS AND CONCLUSIONS....................................................................................................21 FIGURES Figure 1 Site Location Map Figure 2 Site and Surrounding Land Use Map Figure 3 Phase I ESA Recognized Environmental Conditions Map Figure 4 Site Investigation Map TABLES Table 1 Summary of Soil Analytical Results — Volatile Organic Compounds (VOCs) Table 2 Summary of Soil Analytical Results — Polynuclear Aromatic Hydrocarbons (PNAs) Table 3 Summary of Soil Analytical Results — RCRA Metals (Total Concentrations) Table 4 Summary of Groundwater Analytical Results — Volatile Organic Compounds (VOCs) Table 5 Summary of Groundwater Analytical Results — Polynuclear Aromatic Hydrocarbons (PNAs) 2422 fi 3 / an'nwkl r" utohtejpnlr 4=:110 f.."rl:y.... I.iirilted 11 sll¢, Table 6 Summary of Groundwater Analytical Results —RCRA Metals (Total Concentrations) Table 7 Summary of Soil Gas Analytical Results — Volatile Chemicals (VCs) APPENDICES Appendix A Soil Boring Logs Appendix B Laboratory Analytical Reports Appendix C Photograph Log F:11'-R0J1=(.,'," NO "242W)fi 3 / F:annwkl Auto F-Rejoll, F:11opf.."Irly .. I.iirilted F:11uA�,e 11 sl[e kl %. N 1.0 EXECUTIVE SUMMARY True North Consultants, Inc. (True North) has prepared this summary report for the Village of Mount Prospect (Village) to document the findings of a limited Phase II Environmental Site Assessment (ESA) performed at the Formula Automotive, an automotive repair property, located at 310 West Northwest Highway in Mount Prospect, Cook County, Illinois (Site) as part of the environmental due diligence process. The Site location and approximate boundaries are depicted on Figures 1 and 2. The intent of these limited investigation activities was to evaluate the Site for potential presence of environmental impacts considering the recognized environmental conditions (RECs) identified during the Phase I ESA prepared by True North in February 2024. The Phase I ESA identified a total of five RECs for the Site which generally included historic and current automotive repair operations, historic filling station operations, which was also associated with unresolved Leaking Underground Storage Tank (LUST) incidents, and open SRP status reported on the Site. Based on the Phase I ESA findings, which are further detailed in Section 2.0, True North was requested to perform a subsurface investigation at the Site to evaluate subsurface conditions with respect to the identified RECs. Ground penetrating radar (GPR) screening was conducted as part of the limited Phase II ESA activities to clear proposed sample locations of utilities and identify subsurface anomalies potentially indicative of USTs. Based on the identified RECs and information obtained during the Phase I ESA, the west portion of the Site was chosen for GPR investigation in an attempt to identify potential USTs. The GPR survey did not identify any anomalies or indications of disturbed/excavated areas potentially associated with potential USTs. True North mobilized to the Site on March 20 and 21, 2024 and advanced a total of six (6) soil borings and installed three (3) temporary groundwater monitoring wells and seven (7) soil gas probes. The investigation was performed to evaluate soil, groundwater, and soil gas conditions at the Site and determine the potential impact of the identified RECs. The soil borings were advanced at strategic locations across the Site and east adjoining properties to depths ranging between 8 to 30 feet below ground surface, dependent upon localized geologic conditions and boring location. Boring spacing, depth, and location were determined based on current Site conditions and findings of the Phase I ESA. One representative soil sample was collected for laboratory analyses from each soil boring. During the investigation, three (3) soil borings were completed as temporary groundwater monitoring wells for the collection of representative grab groundwater samples. The temporary groundwater monitoring well locations were selected based on the subsurface conditions encountered during drilling as well as the RECs being evaluated. Groundwater accumulated within each of the three groundwater monitoring wells. A grab groundwater sample was collected from each location for laboratory analyses of select contaminants of concern. Additionally, seven (7) soil gas probes were installed to approximately 3-4 feet below ground surface (bgs) for the collection of representative soil gas samples for evaluation of the indoor and hfarrnula6\ufcaltcpalrFli'upuly..I.iii111c"rahlhi: a 11 [�anvh'onnnon[al ' Ic,, Assusarricwil: 1 outdoor inhalation exposure routes. The soil gas probe locations were determined based on current Site conditions and findings of the Phase I ESA. A soil gas sample was collected from each soil gas probe location for laboratory analyses of volatile chemicals. The soil, groundwater, and soil gas samples collected during the investigation were analyzed for a strategic combination of Volatile Organic Compounds (VOCs), Volatile Chemicals (VCs), Polynuclear Aromatic Hydrocarbons (PNAs), Resource Conservation and Recovery Act (RCRA) Metals/Barium and pH to assess contaminants of concern generally associated with the identified RECs. The analytical parameters were determined based on the boring/well location with respect to the identified RECs, site conditions, regulatory and industry standards. Soil, groundwater, and soil gas analytical results were compared to the most stringent Tier I Remediation Objectives (ROs) listed in 35 Illinois Administrative Code (IAC) Part 742 "Tiered Approach to Corrective Action Objectives" (742) to provide a conservative evaluation of the investigation results. The laboratory analytical results for the soil, groundwater, and soil gas samples are summarized in tabular format and compared to the Tier I ROs for residential properties (most conservative remediation objectives) in Tables 1 through 7. Soil analytical results from this investigation indicate that concentrations of VOCs, PNAs, and RCRA Metals/Barium were below the most stringent Tier I SROs provided in 742, with the exception of VOC constituents benzene and xylenes (total) at sample locations SB -2 and SB -5. The concentration of xylenes (total) exceeded the Tier I SROs for the construction worker inhalation pathway at SB -2 and SB -5. Concentrations of benzene exceeded the residential Tier I SROs for soil inhalation, construction worker inhalation, and SCOG exposure pathways at SB -2. Soil sample SB -5 contained concentrations of benzene in exceedance of SCOG exposure pathways. The soil results and exceedances identified during the course of the investigation are detailed within Section 6.1 of the subject report. During soil screening activities, noteworthy observations were encountered at three borings during the investigation. Visual evidence of impact (e.g. staining) and/or odors were not identified at any of the boring locations with the exception of soil borings SB -2, SB -5, and SB -6. Elevated PID readings were not identified at any of the boring locations with the exception of soil borings SB -2, SB -5, and SB -6. The PID readings and field screening observations are identified on the soil borings logs provided in Appendix A. Grab groundwater samples were collected from temporary groundwater monitoring wells installed at three locations across the Site based on the identified RECs and subsurface conditions encountered during drilling. Groundwater analytical results from this investigation indicate that concentrations of VOCs, PNAs, and RCRA Metals were below the most stringent Class I Tier I CROs provided in 742. The groundwater results identified during the course of the investigation are detailed within Section 6.2 of the subject report. Soil gas probes were installed across the Site at representative locations based on the identified RECs for collection of grab soil gas samples. Analytical results from the investigation indicated that concentrations of VCs exceeded the most stringent Tier I SGROs at soil gas locations SG -2 and SG -7. The concentration of one or more VCs exceeded the residential Tier I SGROs Fc rnula Alflo I"'Icp ali Fliralpu'lly -- 1.iii111c"F111"as , 11 I:anvnr„arannonlal'Ic,, Assosarricwil 2 %. N established in 742 for the indoor inhalation exposure pathway at SG -7. The concentration of one or more VCs exceeded the industrial/commercial and/or residential Tier I SGROs established in 742 for the indoor exposure pathways at SG -2. The soil gas results and exceedances identified during the course of the investigation are detailed within Section 6.3 of the subject report. The soil analytical results indicate that further evaluation and/or consideration is warranted for the soil inhalation, SCOL, and construction worker inhalation exposure pathways. The groundwater and soil gas conditions, along with the analytical results, warrant further evaluation of the indoor inhalation exposure pathway. Exceedances for the indoor inhalation exposure pathway were identified with the footprint of the existing on-site building and within east adjoining property parking lot. Implementation of a Building Control Technology meeting IEPA requirements should be considered for any current and future on-site structures considering the available information and data. The IEPA might require an Environmental Land Use Control (ELUC) for the east adjoining property, which could restrict the future use of the property to industrial/commercial uses to manage potential vapor intrusion risks. Generally, the groundwater ingestion pathway can be eliminated from consideration through implementation of a groundwater use restriction institutional control as prescribed by the IEPA in 35 IAC 740 and 35 IAC 742. Currently, the site is provided potable water through the municipal supply system and potable groundwater wells have not been identified at the Site. Furthermore, an engineered barrier, such as a cap comprised of pavement or clean fill, to mitigate soil exceedances should be considered for the Site. The RECs identified in the Phase I ESA have been evaluated during the course of the subject limited Phase II ESA. The associated endangerment assessment identified exceedances of the Tier I ROs for soil and soil gas associated with various exposure pathways as provided in 742. Based on these results, impact associated with the RECs has been identified at the Site and further consideration and/or evaluation is warranted. The intent of this limited investigation was to provide environmental due diligence documentation to the Village. The findings and conclusions of this report are based on the six (6) soil borings, three (3) temporary groundwater monitoring wells, and seven (7) soil gas probes that were installed at various representative on -Site locations as detailed within this summary report. The information provided herein is representative of the existing conditions at the identified boring locations. Varying subsurface conditions, inclusive of soil types, types of contaminants, and concentrations of contaminants, may exist at other locations on -Site. Fc rnula Alflo I"'Icp ali Fliralpc"Hy -- 1.innik"'d 1111"as , 11 I:anvnr„arannonlal'Ic,, Assosarricwil 3 kl %. N 2.0 INTRODUCTION True North was retained by the Village to perform a limited subsurface environmental investigation to assess the RECs and evaluate the environmental status of the Site prior to potential redevelopment. Figure 1 identifies the location of the Site and Figure 2 identifies the surrounding land uses. A Phase I ESA was performed at the Site by True North in February 2024. The Phase I ESA identified the following RECs: The western portion of the Subject Property was historically improved with a filling station from the late 1930s through 1950. Based on review of available information provided by the Village, the filling station consisted of a small commercial structure with two pump islands located on its west side. Information pertaining to the associated underground storage tank (UST) system(s) was not identified. This filling station does not appear to have been investigated during Leaking Underground Storage Tank (LUST) or Site Remediation Program (SRP) activities associated with the Subject Property. Based on the time period of operations, absence of information pertaining to UST systems, and lack of identified investigations, the original filling station on the western portion of the Subject Property is considered a recognized environmental condition. The Subject Property has operated as automotive repair services since at least 1950 through the present. Previous automotive repair operations included the use of four in -ground hydraulic lifts which were removed sometime prior to 1989 when current ownership acquired the Subject Property. Evidence of the removed in -ground hydraulic lifts was observed within the western and northern service bay areas of the building. Information pertaining to the removal and/or confirmatory soil sampling performed during removal was not identified. Current operations include the use of six aboveground hydraulic lifts. New and used oil is stored within 55 -gallon drums, 110 - gallon plastic totes, an approximate 100 -gallon tote, and a 300 -gallon aboveground storage tank (AST). Oil staining was observed beneath these items. Oil staining was also observed throughout the service bay areas where two suspect floor drains were observed. Additionally, snowmelt on the southern exterior side of the building was observed to have an oily sheen and was observed draining into nearby stormwater catch basins. Based on visual observations made during the site reconnaissance, absence of documentation related to former in -ground lift removal activities, and duration of operations, the automotive repair operations at the Subject Property are considered a recognized environmental condition. The Subject Property formerly utilized a 275 -gallon used oil UST that was located beneath the eastern portion of the building. The UST was removed in November 2000 and LUST No. 20002263 was reported. Initial confirmatory soil samples identified volatile organic compound (VOC) impacts from the excavation above Tiered Approach to Corrective Action Objectives (TACO) objectives applicable at the time. Approximately 55 -cubic yards of impacted soil and native soil were excavated and an additional soil sample was collected. Based on analytical results of the additional soil sample, the Illinois Environmental Protection Agency (TEPA) issued a No Further R) "2429OG F f>rrnda Fw�Iflo'ell-1 alr Flrup rlyr .. 1. ii 11h," l h'Ii :m� 11 [:anvlrrrnri u [ rl ':,IIE. As wussir icwill: 4 Remediation letter for the incident on November 15, 2002 with no land use restrictions. True North notes that the 2000 LUST incident was issued closure prior to current IEPA regulations requiring evaluation of the indoor inhalation exposure pathway. Based on regulatory closure prior to current regulatory framework requiring evaluation of the indoor inhalation exposure pathway, closed LUST No. 20002263 is considered a recognized environmental condition and vapor encroachment condition to the Subject Property. The Subject Property was formerly improved with a second filling station from 1950 through 2014. The UST basin, consisting of diesel fuel and gasoline USTs, was located on the northern portion of the Subject, immediately west of the building. The fueling canopy and three pump islands were located on the central portion of the Subject Property. In 1999, an E-85 UST was installed west of the fueling canopy and one of the pump islands was extended to accommodate dispensing. The USTs were removed in May 2014 and LUST No. 20140459 was reported. Approximately 861.59 cubic yards of backfill was excavated and confirmatory soil samples identified "minor residual contamination." Free product was reported on perched groundwater and methyl tertiary butyl ether (MTBE) concentrations in groundwater exceeded Tier I Groundwater Remediation Objectives (GROs) in March 2015. The IEPA requested further delineation of the release; however, as of May 2016, it does not appear that subsequent investigations to delineate contamination have been conducted nor has the indoor inhalation exposure pathway been evaluated. To date, the LUST incident has not been issued regulatory closure by the TEPA. Based on the detected groundwater contamination, residual soil contamination, and lack of investigations since at least 2015, open LUST No. 20140459 is considered a recognized environmental condition and a vapor encroachment condition to the Subject Property. A portion of the Subject Property was enrolled into the SRP on August 17, 2015 in an effort to obtain a Focused No Further Remediation letter addressing VOCs, Resource Conservation and Recovery Act (RCRA) Metals, and semi -volatile organic compounds (SVOCs). Impacts were detected during a previous Stage 1 Investigation which identified Light Non -Aqueous Phase Liquid (LNAPL) within subsurface media in the northern portion of the building. Concentrations of benzene, toluene, ethylbenzene, and xylene (BTEX) and naphthalene were detected above Tier I Soil Remediation Objectives (SROs). Additional monitoring wells were installed in 2015 to determine impact of LNAPL within subsurface soils beneath the building. Concentrations of benzene, mercury, selenium, and tetrachloroethene were detected above Tier I SROs. In Spring 2016, chemical reagent was injected into three monitoring wells to biodegrade xylene concentrations as well as other VOC contamination. VOC concentrations were below Tier I SROs in soil borings advanced one inch from borings with elevated concentrations. In June 2019, a soil gas sample was collected where tetrachloroethene concentrations were highest. Soil gas analytical results identified tetrachloroethene concentrations exceeding IEPA Indoor Inhalation ROs. It was noted that the building is underlain with a sub -slab membrane barrier system building control technology (BCT); however, it was later reported that the building utilized a sub -slab depressurization system. True North notes that evidence of this system was not observed during the site reconnaissance. Groundwater flow direction was determined to be towards the west; however, groundwater was not encountered during recent investigation activities and therefore was not sampled. To address remaining impacts Fc rnula Aulo I"'Icp air Fli,olpc"Hy -- 1.Iinnik"'d 1111"as , 11 I:anvnr„arannonlal'Ic,, Assosarricwil 5 at the Subject Property, a groundwater use restriction, industrial/commercial land use restriction, and BCT were proposed as requirements in the No Further Remediation letter requested. In January 2021, the IEPA rejected the Focused Site Investigation Report/Remedial Objectives Report/Remedial Action Plan/Remedial Action Completion Report (FSIR/ROR/RAP/RACR) indicating that contamination had not been fully delineated, additional soil gas and/or groundwater samples should be collected, analysis of total petroleum hydrocarbons (TPH) should be performed, groundwater modeling for off-site impact should be calculated, etc. A Response Letter was prepared in January 2021 which the IEPA disproved of in August 2021, stating that further investigation and analysis is required, including modeling for potential off- site impacts. No subsequent investigation reports or responses to the IEPA were identified. To date, the SRP listing remains active and has not been closed via No Further Remediation letter. Based on lack of subsequent investigations since at least 2019, exceedances of the indoor inhalation exposure pathway, and absence of regulatory closure, the open SRP status for the Subject Property is considered a recognized environmental condition and vapor encroachment condition to the Subject Property. Figure 3 identifies locations and information pertinent to the above referenced RECs. Based on the Phase I ESA findings, the Village requested that True North assess the RECs to evaluate the current environmental status. Fc rnula Alflo I"'Icp air Fli'olpc"Hy -- 1.Iinnik"'d 1111"as , 11 I:anvnr„arannonlal': Ilr, Assosarricwil 6 kl %. N 3.0 LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT 3.1 Site Location and Legal Description The Site consists of an approximate 0.35 -acre tract of land addressed as 310 West Northwest Highway and identified by the parcel number 08-11-204-015. The Subject Property is currently occupied by Formula Automotive, an automotive repair business. A brief legal description for the Site was obtained during the Phase I ESA as follows: LOT 1 IN WINKELMAN'S RESUBDIVISION OF LOTS 1-5 IN HENRY J. EHARD'S SUBDIVISION IN THE NORTHEAST '4 OF SECTION 11, TOWNSHIP 41 NORTH, RANGE 11, EAST OF THE THIRD PRINCIPAL MERIDIAN, COOK COUNTY, ILLINOIS A Site location map is presented in Figure 1 of this report. The vicinity surrounding the Site can be characterized as commercial land use which is depicted on Figure 2. 3.2 Current/Future Site Operations The 0.35 -acre tract of land currently operates as an automotive repair garage. The current site conditions date back to 1980. It is True North's understanding that the Village is currently evaluating and considering the Site for potential future redevelopment. Ivy:) h2429OG.I I' ol1inch F,,,Iflo ql-1011- 1=11'up rly .. 1. ii 11h," l h'I i :m� 11 [:anvh,onnnu [ aI ':,IIE. As wussir icwill: 7 kl %. N 4.0 TRUE NORTH SITE INVESTIGATION ACTIVITIES 4.1 Private Utility Locate and Ground Penetrating Radar Survey Prior to subsurface activities, JULIE, the "one call" utility locate service, was contacted so that any utilities entering the Site could be identified. Additionally, prior to subsurface activities, Subsurface Radar Solutions, LLC (SRS) performed ground penetrating radar (GPR) scanning at the Site for evaluation of potential existing UST(s) and to clear proposed soil boring locations of potential utility conflict prior to drilling. Additional utility information was provided by the Village of Mount Prospect Public Works prior to commencing drilling activities. GPR screening activities were completed with a GSSI SIR -3000 GPR unit with a 400mhz antenna. Targeted areas were scanned on March 20, 2024 using a "cross and mark" method with grid patterns approximately 24-32" on center with the intent of identifying subsurface anomalies potentially indicative of USTs. Based on the identified RECs and information obtained during the Phase I ESA, select areas of the Site were targeted for GPR screening in an attempt to identify indications of potential existing or historical USTs. The GPR survey was conducted in one distinct area in order to investigate for potential anomalies and/or disturbance areas. The GPR scan areas, results, and interpretations are as follows: • West section of Site: GPR scanning was performed across the west quadrant of the Site. The survey was performed throughout this area to investigate a potential UST based on documentation reviewed during the Phase I ESA. The GPR survey did not identify any anomalies or indications of disturbed/excavated areas potentially associated with an existing or historical tank. 4.2 Description of Sampling Plan The limited subsurface investigation was performed by True North on March 20 and 21, 2024. A Site-specific sampling plan was developed prior to mobilization to ensure that the objectives of the investigation were achieved. The sampling plan included the installation of soil borings and temporary monitoring wells in the areas where the identified RECs could have impacted the Site. During the investigation activities, True North advanced a total of six (6) soil borings. All six of the soil borings were advanced via direct push drilling methods to depths ranging between 8 to 30 feet below ground surface to evaluate subsurface conditions. Boring spacing was determined with the intent of increasing the likelihood of impact detection. Three (3) of the soil borings were ultimately completed as temporary groundwater monitoring wells for the collection of grab groundwater samples. An additional seven (7) soil gas probes were advanced via direct push drilling methods to a depth of 5 feet below ground surface for collection of grab soil gas samples. Figure 4 identifies the location of the completed soil borings, temporary groundwater monitoring wells, and soil gas probes. F f>rrnda Fw�Iflo cll-1 alr Flrup rlyr .. 1. ii 11h," l h'Ii :m� 11 [:anvlronri u [ rl ':,IIE. As wussir icwill: 8 The following sections describe True North's sampling methodology and field activities. 4.3 Methods of Sampling 4.3.1 Soil Sampling All limited Phase II ESA sampling procedures were performed according to standards set forth by the Illinois Environmental Protection Agency 35 Illinois Administrative Code (IAC) 742, "Tiered Approach to Corrective Action Objectives (742)," United States Environmental Protection Agency (USEPA) SW -846, "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods," ASTM E1903-19 standard, "Standard for Environmental Site Assessments: Phase II Environmental Site Assessment Process," and Occupational Health & Safety Administration (OSHA) 1910 Standards. Soil sampling procedures involved the advancement of one soil boring at each proposed location. All downhole equipment was decontaminated between each probe point with distilled water and liquid-nox solution and distilled water rinse. All soil cuttings were returned to the borehole of origin after limited Phase II ESA activities were completed. During direct push advancement, soil samples at each soil boring location were collected continuously at two foot or two and a half foot intervals. At each interval, the acetate sleeves were opened and a representative soil sample from each interval was immediately placed in a zipper locked, 4 -mil plastic bag, with airspace, and allowed to warm to ambient conditions. The soil samples were chosen for field screening and potential laboratory analysis based on visual observations and/or noticeable odors. The soil samples that were containerized in the plastic bags were screened with a calibrated PID with a 10.6eV lamp to determine the presence of photoionizable vapors that are potentially indicative of the presence of volatile compounds in the soil. Generally, soil samples that registered the highest PID concentration were considered for laboratory analysis. If no positive PID readings were encountered within a soil boring, soil sample locations were based on an appropriate soil sampling depth as determined by field screening activities as well as the associated RECs. The depth intervals of selected soil samples were noted during soil screening activities. Immediately following screening activities, soil samples were collected directly from the sleeve or zip lock bag. Soil boring logs from True North's limited Phase II ESA activities are presented in Appendix A. Soil samples collected for VOC analyses followed SW846 Method 5035: "Closed - System Purge -and -Trap Extraction for Volatile Organics in Soil and Waste Samples" field preservation protocols. A power handle and syringe were utilized to fill two pre - Fc rnula Alflo I"'Icp ali Fliralpu'lly -- 1.iii111c"F111"as , 11 I:anvnr„arannonlal': Ilr, Assosarricwil 9 weighed sodium bisulfate preserved vials and one pre -weighed methanol preserved vial with five grams of soil. The protocol also requires collection of one additional glass jar with soil for analysis of moisture content utilizing Method 160.3. Dependent upon proposed analyses at a particular sample point, additional sample was containerized as appropriate per laboratory recommendations and analytical method requirements. Additional glass jars were filled with soil for analyses of the following parameters: PNAs, RCRA Metals/Barium, and pH. 4.3.2 Groundwater Sampling A total of three soil borings were completed as temporary, one -inch diameter PVC monitoring wells. One grab groundwater sample was collected from each of the three groundwater wells. Temporary monitoring wells TW -1, TW -2, and TW -3 were installed to depths of approximately 29.1, 24.2, and 14.7 feet below existing ground surface, respectively. Each well featured ten -foot screen intervals set at the noted depths. Upon collection of the grab groundwater samples, the wells were removed, and the soil borings were sealed by backfilling the hole with soil cuttings and bentonite to the surface. The surface was subsequently patched to match the corresponding surrounding grade and surface material. Low -flow sampling techniques were utilized as feasible to collect the grab groundwater sample from the screen point. Low -flow water sampling techniques were completed using a Geopump Series II Peristaltic Pump with dedicated disposable polyethylene (poly) tubing. The pump tubing was lowered into the screen point and set approximately in the middle of the screened interval. The purpose of the tubing placement was to minimize excessive mixing of the stagnant water in the casing above the screen within the screened interval zone, and to minimize re -suspension of solids which collect at the bottom of the well. The flow rate of the pump was adjusted and monitored to ensure minimal drawdown of water column in the well. 4.3.3 Soil Gas Sampling Seven soil gas probes (SG -1 through SG -7) were advanced to a depth of approximately three to four feet below ground surface and finished as temporary soil gas monitoring wells. Soil gas probes were advanced at strategic locations across the Site to evaluate potential impact from the RECs and the inhalation exposure pathways evaluated under 742. A six-inch soil gas implant was attached to the end of a '/4 -inch internal diameter Teflon tubing. The soil gas implant and tubing were then lowered into the borehole to the desired depth. The depth of the soil gas implant was checked by lowering a standard tape measuring tip to the borehole terminus. Teflon tubing above ground was then cut allowing approximately two (2) feet of tubing to remain above ground. An appropriate quantity of filter packing sand was poured into the borehole to surround the Teflon tubing at depth. Bentonite was then backfilled on top of the sand filter pack to ground level to seal the soil gas well from ambient air. Fc rnula Aulo I"'Icp air FIl'olpc"Hy -- 1.IInnik"'d 1111"aso, 11 I:anvnr„arannonlal'Ic,, Assosarricwil 10 Soil gas samples were collected with summa canisters which collect samples by negative pressure. Prior to soil gas sampling, each soil gas well was purged and the purge gas was screened with a PID. The PID readings are identified on the corresponding soil gas log provided in Appendix A. A shut-in test was subsequently performed in accordance with EPA standards and protocols. Sub atmospheric pressure sampling uses an initially evacuated canister provided by the laboratory to collect gas samples. A hand valve and fixed orifice are attached to the canister prior to sampling to regulate the flow. With this configuration, a grab sample of air from the gas well is drawn into the pre -evacuated summa canister. After the air sample was collected, the canister valve was closed, a cap was installed, and an identification tag was attached to the canister for transport to an accredited laboratory for analysis. 4.4 Analytical Methods All soil, groundwater, and soil gas samples collected for laboratory analysis were placed in laboratory provided containers, labeled, and placed in a cooler with ice (as appropriate), and logged on a chain of custody form. Soil, groundwater, and soil gas samples were transported under proper chain -of -custody to Sterling Labs (Sterling) located in Des Plaines, Illinois. Sterling is an Environmental Laboratory Accreditation (NELAC) accredited laboratory. A copy of the laboratory NELAC accreditation is presented with the laboratory analytical reports in Appendix C. The following table identifies the compounds and analysis methods used to determine the concentrations of contaminants -of -concern (COC) potentially present in soil, groundwater, and/or soil aas. Volatile Organic Compounds 5035A/8260B Soil/Groundwater (VOCs) Polynuclear Aromatic 8270C Soil/Groundwater Hydrocarbons (PNAs) RCRA Metals/Barium 6010B/7471 Soil/Groundwater pH 9045C Soil Volatile Chemicals (VCs) TO -15 Soil Gas 4.5 Field Activity Documentation True North performed limited Phase II ESA activities at the Site on March 20 and 21, 2024. The subsurface investigation consisted of advancing a total of 6 soil borings to depths ranging between 8 to 30 feet below ground surface, completion of three borings as temporary Foirnula k1lo I"wF,IraliFliojl) "Hy .... 1.iinik"'d 117<°is, 11 I:anvli'onii onlal ' Ic,, Assossirricril 11 %. N groundwater monitoring wells and advancing a total of seven soil gas probes to a depth of 5 feet below ground surface. The boring, well, and soil gas probe depths and locations were determined based upon boring location with respect to the identified RECs, potential redevelopment, and subsurface hydrogeologic conditions. The following table identifies the location of completed soil borings with respect to identified RECs, environmental conditions, and/or soil characterization for potential redevelopment purposes. SB -1 30 VOCs, PNAs, RCRA Metals, and pH SB -2 and SB -4 25 VOCs, PNAs, RCRA Metals, and pH SB -3 15 VOCs, PNAs, RCRA Metals, and pH SB -5 and SB -6 g VOCs, PNAs, Barium, and pH Evaluation of on -Site historic filling station identified in Section 2.0 Evaluation of historic and current on -Site operations identified in Section 2.0 Evaluation of historic and current on -Site operations identified in Section 2.0 Evaluation of SRP, historic and current on -Site operations identified in Section 2.0 Figure 4 identifies the location of the completed soil borings and groundwater temporary monitoring wells installed and evaluated during the limited Phase II ESA activities. Appendix C presents representative photographs of the limited Phase II ESA activities. Field soil identification was used to construct soil boring logs. Surfacing materials identified during True North's limited Phase II ESA activities generally consisted of asphalt, concrete or topsoil and organic matter. The surfacing materials were generally underlain by variable fill material underlain by silty clay to boring termination depths with fine sand or silt seams encountered at various depth intervals. The subsurface geologic materials and depths observed at each investigation location are identified and detailed on the boring logs included in Appendix A. The subsurface silty clay conditions were generally observed to be similar across the Site with varying thicknesses and depth intervals of fine grain sand or silt seams, as depicted on the enclosed boring logs. Based on the available historical information and field observations, Fc rnula Alflo I"'IcIrall FIlralpc"Hy .. 1.III licca 1111"as , 11 I:anvnr„ ni,nonlal': !I(,,,Assosarricwil 12 %. N the soil encountered during the investigation beneath surface fill materials are presumed to be native subsurface soils. At four soil boring locations, specifically SB -1 through SB -4, wet conditions were observed within localized and lenses encountered at various depths ranging from approximately 9 and 25 feet below grade. Wet conditions varied due to the localized geology and various ground surface elevations of each boring location across the Site. A sand seam and/orwet conditions were not observed at SB -5 and SB -6. Based on field observations and the nature of the assessed RECs, soil borings SB -1, SB -2, SB -3 were completed as temporary groundwater monitoring wells TW -1, TW -2, and TW -3 respectively. The following table provides information concerning the temporary groundwater monitoring wells, evaluated parameters and static groundwater depth within each well as measured from existing ground surface. TW -1 16.6 VOCs, PNAs, RCRA Metals, and pH Evaluation of on -Site historic filling station identified in Section 2.0 Evaluation of historic and VOCs, PNAs, RCRA TW -2 15.3 current on -Site operations Metals, and pH identified in Section 2.0 Evaluation of historic and VOCs, PNAs, RCRA TW -3 4.57 current on -Site operations Metals, and pH identified in Section 2.0 Considering the observed conditions within the gauged monitoring wells, a shallow groundwater resource appears to exist at the Site which is consistent with the general regional hydrogeologic conditions. Based on field observations and the nature of the assessed RECs, seven soil gas probes were advanced. Three of the soil gas probes, identified as SG -1 through SG -3, were advanced directly adjacent to borings SB -1 through SB -3, respectively. Soil gas probe identified as SG -4 was advanced on the northern extent of the Site and soil gas probes SG - 5 through SG -7 were advanced off -Site on the east adjoining properties. The following table provides information concerning the temporarily installed soil gas probes with respect to identified REC. Foirnula Alflo I"wF,lrairi='ioll) "Hy .... Liii�il�o<;i 1117"°iso, 11 I:anvli'onii onl l ' !I(,,, Assossirricwil 13 %. N SG -1 through Evaluation of historic and SG -4 3 to 4 VCs current on -Site operations identified in Section 2.0 SG -5 through 3 to 4 VCs Delineate off -Site impacts on SG -7 east adjoining properties Field indications of impact were observed at three boring locations. Three locations, specifically SB -2, SB -5, and SB -6 exhibited petroleum odors and elevated PID readings. The elevated PID readings ranged from 123.2ppm to 309.6ppm at the aforementioned locations. In addition to odors and elevated PID readings, soil borings SB -2, SB -5, and SB -6 also contained staining. PID readings and other notable observations are identified on the completed soil boring logs presented in Appendix A. During groundwater sampling activities, no visible or olfactory indications of contamination were observed at the temporary monitoring wells. Temporary wells TW -1 and TW -3 exhibited slight turbidity. Fc rnula Alflo I"wF,IraliFlioll) "Hy .... 1.iinik"'d 111"asa. 11 I:anvli'onii onlal ' Ic,, Assosarricwil 14 kl %. N 5.0 DATA COLLECTION QUALITY ASSURANCE Data was collected following procedures designed to maximize data quality, quantity, and validity. This included information regarding the organization of objectives, functional activities, and specific sampling and analysis quality assurance (QA) and quality control (QC) procedures. The data is designed to achieve the specific technical and data quality objectives and goals needed to identify, and characterize potential VOC, PNA, and/or RCRA Metal contamination at the Site. The data collected during the limited Phase II ESA activities is being used to meet the project objectives. Sampling and quality control were designed to be consistent with United States Environmental Protection Agency (USEPA) procedures outlined in Guidance on Systematic Planning Using the Data Quality Objectives Process, EPA QA/G-4. 5.1 Data Quality Objectives Data Quality Objectives (DQOs) are quantitative and qualitative statements specifying the quality of the data required to support the decision-making process. DQOs for measurement data are expressed in terms of accuracy, precision, completeness, representativeness, and comparability. DQOs define the degree of the total uncertainty in the data that is acceptable for each specific activity during environmental site assessment activities. The uncertainty includes both sampling error and analytical error. Ideally, the prospect of zero uncertainty is the intent; however, the variables associated with the process (field and laboratory) inherently contribute to uncertainty in the data. It was True North's overall objective to keep the total uncertainty within an acceptable range that would not hinder the intended use of the data. In order to achieve the objective, specific data quality requirements such as detection limits, criteria for accuracy and precision, sample representativeness, data compatibility and data completeness were attempted. The overall objectives and requirements were established such that there was a high degree of confidence in the measurements. The data collected during this assessment is being used to address the following: VOCs, PNAs, and/or RCRA Metals potentially present or absent in soil, groundwater, and soil gas (quantitatively). The objectives with respect to the field investigation were to maximize the confidence in the data. To ensure sample representativeness, sample collection was performed in accordance with USEPA recommended procedures for the collection, preservation, and holding times specified in EPA SW -846. 5.2 General Field Procedures To assure that field data was collected accurately and correctly, specific standard field procedures as outlined in SW -846 were adhered to during each sampling event. 5.2.1 Equipment & Calibration To ensure that measurements made in the field were performed with properly calibrated instruments, equipment was calibrated prior to each use as described in the Owner's Manual for each instrument. Field equipment was calibrated prior to use and was FoirnulaAu'lo FII pair Flirapuly .. I.iii111c"ah1IisAsur 11 [:anvnr„rnnnonlal Slic Assosarricni 15 %. N maintained in accordance with the manufacturers' specifications. In addition, prior to and after use, each major piece of equipment was cleaned, decontaminated, checked for damage, and repaired as needed. 5.2.2 Sample Handling After a sample was collected, proper sample handling procedures ensured that the sample remains representative. These procedures included: • chain of custody; • sample identification; • sample packaging; and • proper storage of the sample. 5.2.2.1 Sample Custody Samples were collected and handled in accordance with standard USEPA chain of custody protocols. The objective of the chain of custody was to maintain an accurate written custody record that traced the possession and handling of the sample from collection through analysis. Custody is defined if a sample: • Is in one's actual possession, (or) • Is in one's view, after being in one's physical possession, (or) • Is in one's physical possession and then locked away so that no one can tamper with it, (or) • Is kept in a secured area, restricted to authorized personnel only. A unique identification number was assigned to each sample collected before it was submitted for shipment to the laboratory. Sample storage and custody was the responsibility of the field personnel. Upon laboratory receipt and analysis of the samples, a copy of the chain of custody form was returned to True North with the laboratory report. The chain of custody form remained with the samples until the sample was discarded. 5.2.2.2 Sample Identification & Packing A unique designation was used to identify individual samples for each location. Sample identification numbers were identified in the field and were used to identify the sample on the chain of custody form. After labels were checked, sample jars were checked for competency and placed into coolers for return to the laboratory for analysis. c rniAla Aulo F,'IF pati Fliralpu'lly.._ 1.iii111c"a Flh asc,, 11 [:anvnonriion[al Slic Assosarricril 16 %. N 5.2.3 Sample Delivery Samples were relinquished to laboratory personnel by True North's field personnel after sampling was completed. Upon receipt of shipment, the laboratory inspected each sample jar or container for evidence of tampering. The laboratory sample custodian then removed each sample jar and verified the condition of the sample and containers and compared sample labels to the chain of custody. If any inconsistencies were observed, they were documented on the chain of custody. 5.2.4 Decontamination Protocol Decontamination protocols were strictly adhered to in order to minimize the potential for cross -contamination between sample locations and contamination of areas off-site. crniAlaAuloF,,lF,1.rahlira1pc"Hy.._1.innik"AFlhasc,,11[:anvnornnoii[alSlicA wosaricrrt 17 kl %. N 6.0 DATA EVALUATION AND ENDANGERMENT ASSESSMENT 6.1 Soil Analytical Data Evaluation Limited Phase II ESA activities were completed by True North on March 20 and 21, 2024. A total of six (6) soil samples were collected and submitted for laboratory analysis of VOCs, PNAs, RCRA Metals/Barium and pH parameters as part of the limited Phase II investigation activities. Soil analytical results were compared to the most conservative Tier I Residential SROs provided in 742. Residential SROs were selected to evaluate soil analytical results to represent the most conservative Site conditions. Sampled depths and detected analytes in each of the collected soil samples are summarized and compared to their Tier I SROs in Tables 1 through 3. The laboratory analytical reports are presented in Appendix C. Volatile Organic Compounds (VOCs) Soil analytical results from this investigation indicated that concentrations of the VOCs benzene and xylenes (total) were detected in exceedance of the most stringent Tier I SROs at soil samples SB -2 and SB -5. Soil sample SB -2 contained concentrations of benzene in exceedance of the residential Tier I SROs for soil inhalation, construction worker inhalation, and soil component of groundwater (SCOG) exposure pathways. Soil sample SB -5 contained concentrations of benzene in exceedance of SCOG exposure pathways. Concentrations of xylenes (total) were detected in exceedance of the Tier I SROs established for the construction worker inhalation pathway at soil samples SB -2 and SB -5. There were not any additional VOC exceedances at any of the other sample locations. Soil VOC results are summarized in Table 1. Polynuclear Aromatic Hydrocarbons (PNAs) Soil analytical results from this investigation indicated that concentrations of PNAs were below the most stringent Tier I SROs in 742 in the soil samples collected. Soil PNA results are summarized in Table 2. Resource Conservation and Recovery Act (RCRA) Metals/Barium Soil analytical results from this investigation indicated that concentrations of RCRA Metals/Barium were below the most stringent Tier I SROs in 742 in the soil sample collected. Soil RCRA Metals results are summarized in Table 3. 6.2 Groundwater Analytical Data Evaluation Groundwater analytical results were compared to the most conservative Tier I Class I CROs 1IF�w(')Jll.0 l" l,t) h24290G'.t F of rnula AuloFI I jpalr FIl'opuly .. I. iii111c" F11I Aur 11 [:anvnr„rnnnonlal S Ilr, Assosarricni 18 %. N provided in 742. The residential Tier I Class I GROs were selected to evaluate groundwater analytical results to represent the most conservative Site conditions. The analytical data indicates that there were not any VOC, PNA, or RCRA Metal compounds present in groundwater in exceedance of the most stringent Tier I GROs for Class I groundwater. The groundwater sample results are summarized and compared to the Tier I GROs in Tables 4 through 6, The laboratory analytical reports are presented in Appendix B. Volatile Organic Compounds (VOCs) Groundwater analytical results from this investigation indicated that concentrations of VOCs were below the most stringent Tier I CROs provided in 742. Groundwater VOC results are summarized in Table 4. Polynuclear Aromatic Compounds (PNAs) Groundwater analytical results from this investigation indicated that concentrations of PNAs were below the most stringent Tier I CROs provided in 742. Groundwater PNA results are summarized in Table 5. Resource Conservation and Recovery Act (RCRA) Metals Groundwater analytical results from this investigation indicated that concentrations of RCRA Metals were below the most stringent Tier I GROs provided in 742. Groundwater RCRA Metals results are summarized in Table 6. 6.3 Soil Gas Analytical Data Evaluation Soil gas analytical results were compared to the most conservative Tier I Soil Gas Remediation Objectives (SGROs) provided in 742. The residential Tier I SGROs were selected to evaluate soil gas analytical results to represent the most conservative Site conditions. The analytical data indicates that concentrations of three volatile chemicals were present in exceedance of the most stringent Tier I SGROs for indoor inhalation exposure pathways at two soil gas sample locations. Various volatile chemicals were detected above laboratory detection limits but below Tier I SGROs at the remaining five soil gas sample locations. The soil gas sample results are summarized and compared to their Tier I SGROs in Table 7. The laboratory analytical reports are presented in Appendix B. Volatile Chemicals (VCs) Soil gas analytical results from this investigation indicated that exceedances of Tier I SGROs were identified at two soil gas sample locations, specifically SG -2 and SG -7. The concentrations of benzene exceeded the Tier I SGROs for indoor inhalation exposure pathway for residential properties within SG -2 and SG -7. Additionally, the concentrations of benzene c rniAla Aulo F,,lF,1.rnr lFIl'o1pc"Hy .._ 1. innik"'d Flhasc,, 11 [:anvnor nnoii[al Slic Assosarricril 19 %. N exceeded the Tier I SGROs for the indoor inhalation exposure pathway established for commercial/industrial properties within SG -2. The concentration of ethylbenzene within sample SG -2 exceeded the Tier I SGROs for indoor inhalation for residential properties. Naphthalene was detected in exceedance of the Tier I SGROs for the indoor inhalation exposure pathway for residential properties at soil gas location SG -2. There were not any other VCs detected in exceedance of the indoor or outdoor inhalation Tier I SGROs at these locations or within the remaining soil gas samples. Soil gas analytical results are summarized in Table 7. c rniAla Aulo F,,IcpaIr F3ira1pc"Hy .._ 1. innik"'d Flhasc,, 11 [:anvnor nnoii[al Slic Assosarricril 20 kl %. N 7.0 FINDINGS AND CONCLUSIONS True North has prepared this summary report for the Village to document the findings of a limited Phase II ESA performed at the Formula Automotive, an automotive repair property, located at 310 West Northwest Highway in Mount Prospect, Cook County, Illinois as part of the environmental due diligence process. The Site location and approximate boundaries are depicted on Figures 1 and 2. The intent of these limited investigation activities was to evaluate the Site for potential presence of environmental impacts considering the RECs identified during the Phase I ESA prepared by True North in February 2024. The Phase I ESA identified a total of five RECs for the Site which generally included historic and current automotive repair operations, historic filling station operations, which was also associated with unresolved LUST incidents, and open SRP status reported on the Site. Based on the Phase I ESA findings, which are further detailed in Section 2.0, True North was requested to perform a subsurface investigation at the Site to evaluate subsurface conditions with respect to the identified RECs. GPR screening was conducted as part of the limited Phase II ESA activities to clear proposed sample locations of utilities and identify subsurface anomalies potentially indicative of USTs. Based on the identified RECs and information obtained during the Phase I ESA, the west portion of the Site was chosen for GPR investigation in an attempt to identify potential USTs. The GPR survey did not identify any anomalies or indications of disturbed/excavated areas potentially associated with potential USTs. True North mobilized to the Site on March 20 and 21, 2024 and advanced a total of six (6) soil borings and installed three (3) temporary groundwater monitoring wells and seven (7) soil gas probes. The investigation was performed to evaluate soil, groundwater, and soil gas conditions at the Site and determine the potential impact of the identified RECs. The soil borings were advanced at strategic locations across the Site to depths ranging between 8 to 30 feet below ground surface, dependent upon localized geologic conditions and boring location. Boring spacing, depth, and location were determined based on current Site conditions and findings of the Phase I ESA. One representative soil sample was collected for laboratory analyses from each soil boring. During the investigation, three soil borings were completed as temporary groundwater monitoring wells for the collection of representative grab groundwater samples. The temporary groundwater monitoring well locations were selected based on the subsurface conditions encountered during drilling as well as the RECs being evaluated. Groundwater accumulated within each of the three groundwater monitoring wells. A grab groundwater sample was collected from each location for laboratory analyses of select contaminants of concern. Additionally, seven soil gas probes were installed to approximately 3-4 feet below ground surface (bgs) for the collection of representative soil gas samples for evaluation of the indoor and outdoor inhalation exposure routes. The soil gas probe locations were determined based on current Site conditions, findings of the Phase I ESA, and off-site accessibility. A soil gas sample was collected from each soil gas probe location for laboratory analyses of volatile chemicals. The soil, groundwater, and soil gas samples collected during the investigation were analyzed for a 1IF�w(')Jll.0 l" l,R) h24290G'.t Foirnula AuloFI I jpalr FIl'opuly .. I.iii111c"F11I Aur 11 [:anvnr„rnnnonlal S lic Assosarricni 21 %. N strategic combination of VOCs, VCs, PNAs, RCRA Metals/Barium, and pH to assess contaminants of concern generally associated with the identified RECS. The analytical parameters were determined based on the boring/well location with respect to the identified RECs, site conditions, regulatory and industry standards. Soil, groundwater, and soil gas analytical results were compared to the most stringent Tier I ROs listed in 742 to provide a conservative evaluation of the investigation results. The laboratory analytical results for the soil, groundwater, and soil gas samples are summarized in tabular format and compared to the Tier I ROs for residential properties (most conservative remediation objectives) in Tables 1 through 7. Soil analytical results from this investigation indicate that concentrations of VOCs, PNAs, and RCRA Metals/Barium were below the most stringent Tier I SROs provided in 742, with the exception of VOC constituents benzene and xylenes (total) at sample locations SB -2 and SB -5. The concentration of xylenes (total) exceeded the Tier I SROs for the construction worker inhalation pathway at SB -2 and SB -5. Concentrations of benzene exceeded the residential Tier I SROs for soil inhalation, construction worker inhalation, and SCOG exposure pathways at SB -2. Soil sample SB -5 contained concentrations of benzene in exceedance of SCOG exposure pathways. The soil results and exceedances identified during the course of the investigation are detailed within Section 6.1 of the subject report. During soil screening activities, noteworthy observations were encountered at three borings during the investigation. Visual evidence of impact (e.g. staining) and/or odors were not identified at any of the boring locations with the exception of soil borings SB -2, SB -5, and SB -6. Elevated PID readings were not identified at any of the boring locations with the exception of soil borings SB -2, SB -5, and SB -6. The PID readings and field screening observations are identified on the soil borings logs provided in Appendix A. Grab groundwater samples were collected from temporary groundwater monitoring wells installed at three locations across the Site based on the identified RECs and subsurface conditions encountered during drilling. Groundwater analytical results from this investigation indicate that concentrations of VOCs, PNAs, and RCRA Metals were below the most stringent Class I Tier I CROs provided in 742. The groundwater results identified during the course of the investigation are detailed within Section 6.2 of the subject report. Soil gas probes were installed across the Site at representative locations based on the identified RECs for collection of grab soil gas samples. Analytical results from the investigation indicated that concentrations of VCs exceeded the most stringent Tier I SGROs at soil gas locations SG -2 and SG -7. The concentration of one or more VCs exceeded the residential Tier I SGROs established in 742 for the indoor inhalation exposure pathway at SG -7. The concentration of one or more VCs exceeded the industrial/commercial and/or residential Tier I SGROs established in 742 for the indoor exposure pathways at SG -2. The soil gas results and exceedances identified during the course of the investigation are detailed within Section 6.3 of the subject report. The soil analytical results indicate that further evaluation and/or consideration is warranted for the soil inhalation, SCOG, and construction worker inhalation exposure pathways. The groundwater and soil gas conditions, along with the analytical results, warrant further evaluation of the indoor inhalation exposure pathway. Exceedances for the indoor inhalation exposure pathway were c rniAla Au Io F,,l pa!i lFSira1pc"Hy -- I. indIc"FIIi aser 11 [:anvnonnnon[al S1Ic A wosar icinn: 22 %. N identified with the footprint of the existing on-site building and within east adjoining property parking lot. Implementation of a Building Control Technology meeting IEPA requirements should be considered for any current and future on-site structures considering the available information and data. The IEPA might require an Environmental Land Use Control (ELUC) for the east adjoining property, which could restrict the future use of the property to industrial/commercial uses to manage potential vapor intrusion risks. Generally, the groundwater ingestion pathway can be eliminated from consideration through implementation of a groundwater use restriction institutional control as prescribed by the IEPA in 35 IAC 740 and 35 IAC 742. Currently, the site is provided potable water through the municipal supply system and potable groundwater wells have not been identified at the Site. Furthermore, an engineered barrier, such as a cap comprised of pavement or clean fill, to mitigate soil exceedances should be considered for the Site. The RECs identified in the Phase I ESA have been evaluated during the course of the subject limited Phase II ESA. The associated endangerment assessment identified exceedances of the Tier I ROs for soil and soil gas associated with various exposure pathways as provided in 742. Based on these results, impact associated with the RECs has been identified at the Site and further consideration and/or evaluation is warranted. The intent of this limited investigation was to provide environmental due diligence documentation to the Village. The findings and conclusions of this report are based on the six (6) soil borings, three (3) temporary groundwater monitoring wells, and seven (7) soil gas probes that were installed at various representative on -Site locations as detailed within this summary report. The information provided herein is representative of the existing conditions at the identified boring locations. Varying subsurface conditions, inclusive of soil types, types of contaminants, and concentrations of contaminants, may exist at other locations on -Site. c rniAla Au Io F,,l pa!i lFSira1pc"Hy -- I. indIc"d FIIi aser 11 [:anvnonnnon[al S1Ic A wosar icinn: 23 LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT Site Location Map Legend Project Area I fl NRY I M"A hI N (A NH'�At' HL, (AN I FAL RID F I k� L IN < ne 0 aw < A"'q Sources: Esri, HERE, Garmin,-,Intermap, increment P Corp., GEBCO, USGS L 530 FAO, NPS, NRCAN, GeoBase; IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the Feet GIS User Community A, "'I"' Ilk U lil�" N 0 R T H CONSULTANTS FIGURE 1 Subject Property Location Map Formula Auto Repair Property 310 West Northwest Highway, Mount Prospect, Illinois LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT Site and Surrounding Land Use Map FIGURE 2 "'I"' Ilk U l����" N 0 R T H Subject Property and Surrounding Land Use Map c0NsuLraNrs Formula Auto Repair Property "1 " ,, 310 West Northwest Highway, Mount Prospect, Illinois LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT Phase I ESA Recognized Environmental Conditions Map Legend Project Area C> Approximate Location of Former Used Oil UST EEMApproximate Extent of SRP Remediation Site Boundary 0 Drum Storage Approximate Location of Former Filling Station 1950 M Dumpster Approximate Location of Former Fueling Canopy Former In -Ground Hydraulic Lift Approximate Location of Former USTs A Monitoring Well • 300 -Gallon Used Oil AST A Test Well FIGURE 3 �R U l����" N 0 R T H Subject Property Detail Map c0NsuLraNrs Formula Auto Repair Property 11 ,, 310 West Northwest Highway, Mount Prospect, Illinois 'fir a FIGURE 3 �R U l����" N 0 R T H Subject Property Detail Map c0NsuLraNrs Formula Auto Repair Property 11 ,, 310 West Northwest Highway, Mount Prospect, Illinois LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT Site Investigation Map LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT ..I.., BLwwE Soil, Groundwater, and Soil Gas Analytical Results F LJ E.,, N 0 R T H C O N S U L T A N T S CLIENT: Village of Mount Prospect SITE: Formula Auto Repair Property - 310 W. Northwest Highway PROJECT NUMBER: T242906.3 Acetone 70000 100000 25 25 TABLE Summary of Soil Analytical Results Volatile Organic Compounds (VOCs) NE 100000 <0.0EE8 SAMPLE DATE: March 20 & 21, 2024 LABORATORY: Sterling Labs MATRIX: Soil Analytical Method: EPA Method 5035A/8260B Hill 10.0720 10.0687 <O.0078 13.93 Benzene 12 0.8 0.03 0.17 2300 2.2 <0.00191 3.591,11 10.00196 <0.00194 0.196° B romodishioromethane 10 3000 0.6 0.6 2000 3000 <0.00191 10.00'_OFi 10.00196 <0.00194 10.105 B romoform 81 53 0.8 0.8 16000 140 <0.00382 10.00411 10.00393 <0.00387 10.105 Bromomethane 110 10 0.2 1.2 1000 3.9 <0.0191 10.0196 10.0194 (0.200 2-Butanone�l 47000 25000 17 17 120000 730 u.0 ?t:7 <G 0'88 10.0275 '0.0271 '0.524 Carbon disulfide 7800 720 32 160 20000 9 1000382 x0.00411 10.00393 10.00387 '1.05 Carbon tetrachloride 5 0.3 0.07 0.33 410 0.9 10.0191 10.019!, 10.0194 10.0524 Chlorobenzene 1600 130 1 6.5 4100 1.3 10.00382 x000411 10.00393 10.00387 10.0262 Chloroethane" NE 1500 NE NE 20000 39 10.00764 x0.008'3 <O.0078C- 00775 10.131 Chloroform 100 0.3 0.6 2.9 2000 0.76 10.00382 10.00411 10.00393 10.00387 '0.105 Chlorom.'rare" NE II0 NE NE NE 5 c0.00764 10.00823 10.00781- 00775 '0.262 Dibromochloromethane 1600 1300 0.4 0.4 41000 1300 cC,.GD191 '00020610.00196 1000194 '0.0125 I,I-Dichloroethane 7800 1300 23 110 200000 130 '0.00382 10.00411 '0.00393 10.00387 (0.0524 1,2-Dichloroethane 7 0.4 0.02 0.1 1400 0.99 10.00191 0.0019, 10.00194 10.0'_00 I,I-Dichloroethylene 3900 290 0.06 0.3 10000 3 '0.00191 10.0019-, 10.00194 (0.0524 cis 1,2 Dichloroethylene 780 1200 0.4 1.1 20000 1200 <0.00382 1000411 <0.00393 '0.00387 (0.0524 trans 1,2-Dichloroethylene 1600 3100 0.7 3.4 41000 3100 <0.00382 10.00411 <0.00393 0.00387 10.105 1,2-Dichloropropane 9 15 0.03 0.15 1800 0.5 <0.00191 0.00201 <0.00195 10.00194 10.0300 is 1,3 Dichloropropene 6.4 1.1 0.004 0.02 1200 0.39 <0.00382 1000400 <0.00393 10.00387 (0.00913 trans -1,3 -DIS hioropropene 6.4 1.1 0.004 0.02 1200 0.39 <0.00382 1000400 <0.00393 10.00387 10.0131 Ethylbenzene 7800 400 13 19 20000 58 10.00754 3.75 <0.00781 10.0075 0.804 2-Hexanonel�l 390 450 0.16 0.16 1000 47 10.0207 10.0288 10.0275 10.0171 <0.1'0 Methyl tertiary -butyl ether 780 8800 0.32 0.32 2000 140 10.00191 <0 00201 <0.06196 10.00194 ,0.105 4 -Meth 1-2- entanone 6300 3100 2.5 2.5 160000 340 10.02C7 10.0288 0.0275 ,0.0171 10.524 Methylene chloride 85 13 0.02 0.2 12000 34 10.0191 10.0200 0.01% (0.0194 11.58 Styrene 16000 150 0 4 18 41000 430 10.007(,4 10.00823 ,0.00781 (0.00775 10.105 1122 -Tetrachloroethane') 3.2 0.62 0.0035 0.0035 620 1.7 1'-0191 1000206 10.001% (0.00194 10.0125 Tetrachloroethylene 12 11 0.06 0.3 2400 28 ('.00382 10.00411 10.00393 (0.003.97 (0.128 Toluene 16000 650 12 29 410000 42 10.00191 0.999 10.00116 10.00194 11.05 1,1,1 Trichloroethane NE 1200 2 9.6 NE 1200 10.00191 100020, 10.00196 10.00194 (0.0524 1,1,2 Trichloroethane 310 1800 0.02 0.3 8200 1800 10.00191 0.0010, 0.00196 10.00194 10.a200 Trichloroethylene 58 5 0.06 0.3 1200 12 10.00191 100000; 10.00196 10.00194 (0.0524 Vinyl Chloride 0.46 0.28 0.01 0.07 170 1.1 10.00382 10.00411 10.00393 10.00387 (0.0100 Xylenes (total) 16000 320 150 ISO 41000 5.6 10.0115 16.3' 10.0118 10.0116 13,2' Notes: SLOG- Soil Component of the Groundwater Ingestion Expasu re Route ING-Ingestion Value INH -Inhalation Value <= Analyte not detected li.e. less than RL or MDL) All data reported in milligrams Der kilogram (,g/kg) unlessotherwise noted NE - No remediation objective established by the IEPA for this constituent denotes compound is a Nan -TACO Soil Remediation Objective 'denotes compounds that have been identified as an exceetlence due to the Acceptable Detection Limit exceeding the regulatory standard 'denote: an elegy - method eetemon limit Expoaun Reub Exue4ences: Bold indicates an ezceedance in the referenced criteria °Ingestion exceetlence °Inhalation exceetlence `Soil migration to groundwater exceetlence ^Construction worker ingestion ezceetlence ' Construction worker inhalation ezceetlence r C,,, exceedence TABLE ICONT. F LJ E.,, IN 0 R T H Summary of Soil Analytical Results C O N S U L T A N T S Volatile Organic Compounds (VOCs) CLIENT: Village of Mount Prospect SAMPLE DATE: March 20 & 21, 2024 SITE: Formula Auto Repair Property - 310 W. Northwest Highway LABORATORY: Sterling Labs PROJECT NUMBER: T242906.3 MATRIX: Soil Analytical Method: EPA Method 5035A/8260B Acetone 70000 100000 25 25 NE 100000 0.372 Benzene 12 0.8 0.03 0.17 2300 2.2 <D.DC197 Bromodichloromethane 10 3000 0.6 0.6 2000 3000 C.0O283 Bromoform 81 53 0.8 0.8 16000 140 rD.DD393 Bromomethane 110 10 0.2 1.2 1000 3.9 <D.DI97 2-Butanone�l 47000 25000 17 17 120000 730 D.0175 Carbon disulfide 7800 720 32 160 20000 9 D.D0393 Carbon tetrachloride 5 0.3 0.07 0.33 410 0.9 (0.0197 Chlorobenzene 1600 130 1 6.5 4100 1.3 00393 Chloroethane" NE 1500 NE NE 20000 39 O.CD787 Chloroform 100 0.3 0.6 2.9 2000 0.76 0.0101 Chloromethane" NE 110 NE NE NE 5 cC,.0G787 Dibromochloromethene 1600 1300 0.4 0.4 41000 1300 c0.0097 I,I-1)ichloroethane 7800 1300 23 110 200000 130 c0.00393 1,2-Dichloroethane 7 0.4 0.02 0.1 1400 0.99 (0.00197 I,I-Dichloroethylene 3900 290 0.06 0.3 10000 3 (0.00197 cis 1,2 Dichloroethylene 780 1200 0.4 1.1 20000 1200 (0.00393 trans 1,2-Dichloroethylene 1600 3100 0.7 3.4 41000 3100 '0.00393 1,2-Dichloropropane 9 15 0.03 0.15 1800 0.5 0.00358 cis 1,3 Dichloropropene 6.4 1.1 0.004 0.02 1200 0.39 X0.00393 trans 1,3-Dichloropropene 6.4 1.1 0.004 0.02 1200 0.39 X0.00393 Ethylbenzene 7800 400 13 19 20000 58 1 0.00,87 2-Hexanone" 390 450 0.16 0.16 1000 47 (0.38- Methyl tertiary -butyl ether 780 8800 0.32 0.32 2000 140 (0.00197 4 -Methyl -2- entanone 6300 3100 2.5 2.5 160000 340 c0.0275 Methylene chloride 85 13 0.02 0.2 12000 34 �0.0I97 Styrene 16000 1500 4 18 41000 430 <0.00, 8, 12-Tetrachloroethane�l 3.2 12 0.62 0.0035 0.0035 620 1.7 BGG --3 Tetrachloroethylene 12 11 0.06 0.3 2400 28 X0.00393 Toluene 16000 650 12 29 410000 1 42 00223 1,1,1 Trichloroethane NE 1200 2 9.6 NE 1200 1,1,2 Trichloroethane 310 1800 0.02 0.3 8200 1800 �G.G773 Trichloroethylene 58 5 0.06 0.3 1200 i121 0.0033 Vinyl Chloride 0.46 0.28 0.01 0.07 170 1.1 �G.G0343 Xylenes (total) 16000 320 150 ISO 41000 5.6 0.0171 Notes: Expoaun I Elo-d.nces: SLOG- Soil Component of the Groundwater Ingestion Exposure Route Bold indicates an ezceedance in the referenced criteria ING-Ingestion Value ° Ingestion exceetlence 11411- Inhalation Value °Inhalation exceetlence , - Analyte not detected li.e. less than RL or MDL) Soil migration to groundwater exceetlence All data reported in milligrams per kilogram (mg/kg) unlessotherwise noted ^Construction worker ingestion ezceetlence NE - No remediation objective established by the IEPA for this constituent ' Construction worker inhalation ezceetlence r denotes compound is a Nan -TACO Soil Remediation Objective 'denotes compounds that have been identified as an exceetlence due to the Acceptable Detection Limit exceeding the regulatory standard 'denotes an do -ed method eetemon limit C,,, --,den- u 0 10 0 0 0 0 0 0 0 0 0 0 '� 0 0 N O M - N 0 O m N L lull",II .5d � I'� `��'" ��� 0, 0, P� (T 0, T T T U U a, a � N to a'pll, I�� ';' 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 L c W '��� II 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 y y v Lu } X W ileo ''amm N N N N N N N N N N N N N N N N o c C ; m m m ao n ao ao co o co w c L O Q V luu�' II VIII 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0- W i a m Q w m v v 3 3 u f N v dJ N E a w v O O O O O 0 OO p O O O O fill Ileo„„ O 10 O n O n O n O n o n 0 ro o n O O o O O co O �o O ro O r IIID, 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a IIIIIII� Iljll���i a+ z uuuu An VI O C O a ++ O T N N Q W C T wri; O O O— — N p 0— O N m V d ri' a •o � z N £ en O a w z z z z z z z z z z z- z z .. 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M v N r N O N m pl'GII c - °0 N C` M v 3 W 001 i�yl�m'' C, O O v w c m F N N N O llpm„ y K o d It m Ili�Ym„,. } X Q C O M VIII, — c0 W O c c v c M OLn M r7 m u -- Jix O W a s c 0 a p f m 0 ,,,„, v — H J v 0 O K III i'ini M ^ G O Lo .0 O— 0 O L d T ';II II I°„m O EoI O O O O O 0 lllllli. co O N � I� C a IIII th th II p a d I l a {0 V O O p O O olp o M r+ N O S Z o Z Z WC W N N m F O in c m t O a L l0 O O O O O O x m E II �O N 2 O �p N N I — — — to - T A L W � W O p o ids �% O O N Z Z Z u a 3 L p, 10 — y v `o Z Illl�nfilll - 3 3 0 v ur,„'� _ c M M O O M 41 N ..... LO M CN N O N O, M O, M Qy y O .. w c Y a 0 O L F E T a « G = II- c a 0 0 O m = 10 Q M O CD N M ,O O W 0 N 0 m w v a o L Q. O 'p �o O 0 m � .• — O �p — O O O = y > a m J o ol N E N ti .o. yy 1 iIi N z w« �J CJ Z F W 'iv, « — o °c ` E c W y� m V r.: y_ v y o c L > F V o 4 w U ��� N z= z Z z 0 a > r > E C E = . E o u ,C N N L y N y > C D°r O O OO LA N O O O CID O O O� C;.,� �A O W— Z O W Z W Z a 'o c� N V 3 � DG L O II b0 _ Q N O Q q O_ N 0 O 0 O Op W 0 O Q W W yLn N ^ Q CONZ — Z Z 3 3 L b0 Q Op W 0 O Q W W yLn N ^ Q CONZ — Z Z 3 Q\ — L �o L O 3 ly, M O O O O O >+ �,� O N M Q N ON ON L LO N M M G1 v N O O �z o p a M ��� „� M O cl O co � LO Lq O cv — = O M O O O O _ E C42 i U- H JV�IDUUVO AA Z W W N m V D Z U lllulllll W � v E ` E N O EO 'a ` r N t/1 L L m w > L a M CO M V L U N J 2 1N N TABLE 4 ,Ak ,. �rz a E7 1 V 0 R 1 H Summary of Groundwater Analytical Results C. O N S U L T A N T S Volatile Organic Compounds (VOCs) CLIENT: Village of Mount Prospect SAMPLE DATE: March 20 & 21, 2024 SITE: Formula Auto Repair Property - 310 W. Northwest Highway LABORATORY: Sterling Labs PROJECT NUMBER: T242906.3 MATRIX: Groundwater III III�OIIIIIIIIL Analytical Method: EPA Method 8260B Acetone IiIIIMu1�01 6.3 1000000 20.0700 20.0700 20.0700 Benzene 0.005 0.11 20.00200 20.00200 20.00200 Bromodichloromethane 0.0002 6700 20.00200 20.00200 20.00200 Bromoform 0.001 3.1 <0.00400 20.00400 20.00400 Bromomethane 0.0098 1.5 20.0400 20.0400 20.0400 2-Butanonem 4.2 10000 20.0280 20.0280 20.0280 Carbon disulfide 0.7 67 20.00400 20.00400 20.00400 Carbon tetrachloride 0.005 0.02 20.0200 1 0.0200 20.0200 Chlorobenzene 0.1 26 20.00200 20.00200 20.00200 Chloroethane NE NE 20.00400 <0.00400 20.00400 Chloroform 0.0002 0.07 20.00400 20.00400 20.00400 Chloromethane NE NE <0.00800 20.00800 <0.00800 Dibromochloromethane 0.14 2600 20.00400 20.00400 20.00400 1,1-Dichloroethane 0.7 180 20.00200 20.00200 20.00200 1,2-Dichloroethane 0.005 0.054 20.00400 20.00400 20.00400 1,1-Dichloroethylene 0.007 24 20.00400 1 0.00400 20.00400 cis-1,2-Dichloroethylene 0.07 3500 20.00400 <0.00400 20.00400 trans-1,2-Dichloroethylene 0.1 16 20.00400 20.00400 20.00400 1,2-Dichloropropane 0.005 0.12 20.00400 20.00400 <0.004PO cis-1,3-Dichloropropene 0.001 0.14 <0.00400 20.00400 20.00400 trans-1,3-Dichloropropene 0.001 0.14 20.00800 20.00800 20.008(`0 Ethylbenzene 0.7 0.37 20.00400 20.00400 20.00400 2-Hexanone" 0.035 NE 20.0280 20.0280 20.028P Methyl tertiary -butyl ether 0.07 1900 <0.00400 20.00400 0.00421 4 -Meth I-2- pentanone"' 0.56 NE 20.0280 20.0280 20.0280 Methylene chloride 0.005 2.1 20.0200 20.0200 20.0200 Styrene 0.1 310 20.00800 20.00800 20.00800 1,1,2,2 -Tetrachloroethane") 0.0043 NE 20.00400 20.00400 20.00400 Tetrachloroethylene 0.005 0.091 20.00400 20.00400 20.00400 Toluene 1 530 20.00400 20.00400 20.00400 1,1,1 -Trichloroethane 0.2 1000 20.00400 20.00400 20.00400 1,1,2 -Trichloroethane 1 0.005 1 4400 20.00400 20.00400 1 0.00400 Trichloroethylene 0.005 0.34 20.00400 20.00400 20.00400 Vinyl Chloride 0.002 0.028 20.00400 20.00400 20.00400 Xylenes (total) 10 30 20.0120 20.0120 20.0120 Notes: Exposure Route Excesdances: <= Analyte not detected (i.e. less than RL or MDL) Bold/Shading indicates an --dance in the referenced criteria All data reported in milligrams per liter(mg/L) unless otherwise noted a Class I groundwater exceedance NE = No remediation objective established by the IEPA for this constituent ' Class 11 groundwater exceedance denotes compound is a Non -TACO Groundwater Remediation Objective c Indoorinhalation exceedance ' denotes an elevated method detection limit u 0 r, C4 0 v o L - N � v v a r O N CL w m N y C4 y N O 0 O J 3 o0 S c C U — u v F N l7 1.. N w N K c c v O N W 00 W OO - W- co= O U W ()D co W W W O U v N K v v v Y K ad a O riim„„, V. ";"'" 0 O 0 O 0 O 0 o 0 0 0 0 0 0 0 0 0 p 0 p 0 O 0 0 0 0 0 o 0 0 u w v 0 Q Q h73J c a o m A a � a . o j O O O O O O O O 0 0 O O O O 0 O O O O O O O O O O o 0 0 0 0 p 0 0 0 0 0 0 0 0 0 0 0 0 0 p ++ N a a <o C Ln NLn Lo Ln :o u o a -- o 0 0 0 0 - 0 0 0 0 -- 0 0 0 0 0 0 �Ln---- 0 0 0 0 0 o 0 O o 0 n D o 0 0 0 0 0 4 0 0 4 0 0 0 0 0 0 0 0 0 0 4 C a N a T W } _ J w � L � f0 7 E 1 z c c 3 4A a o M pui W W W W W W W W W W W W W^ n W W v y Z Z Z Z Z Z Z Z Z Z Z Z Z O Z Z O L iz,1 III�,IY 3 0 u N 0 CL a 0 L z o Yo a = w ° C Q� T o ° F Qtf O �% b^• ° `—° O a ' ^ O O N O O O N O O Q O O O O Q N O N 0 0 0 0 0 Lo = m E N O O O O O n v Q v o r vz v E zW a Y v IIII IIIIII Vm�u um 44 Z W W N Co 'a � v 'o v J x V 7 y c o o v o E u m � VV W �1 illi ��� = v aci y (D L c d m T .. A ✓ ;? R c c 0 .. III'> a! w C uL m'0 _C 'p ae z a z �,�,�,� v a`e c u ., L +' C C ^N. CN S O Y O OO OC N (u —p aC! m c ` o > ` > u ¢C¢ a m m m m v D��o ZL=yaN aLLC@Cd a Q O N O In T O y O �O 0 N O d u O L N y v y N L otS v y r o 3 w N bD C 9 L c u � U - o m a w v V ++ Illi OO c O c a v o y v w ^+ 0 L0 qCQ J ¢ Wu.... 000000 p 00 O C - d 0 Q Q d N J c v m A a �^ O `0 O 0 0 0 O 0 0 0 0 O u 0 0 O 0 0 0 iul,, 0 0 0 0 0 0 0 0 a+ 7 N d N V y,nl O O 0 C 0 0 0 0 0 0 0 0 0 T uu 00 I, 0o 0 0 �o o� o m 0 0 0 0 0 0 0 0 C N„ a "o W N N J co llllllil F@ C lluill �F y � L L A N O M wwwwww)wwm Z Z Z Z Z M Q Z Z a _ T� 0lin m d Q � _ 3 v uc o y aa` y L O _ IIIi,iP' o a a w W - - L C a o. XIxT iii J N o of o " 0F n ISI �,I �� N 00 n N 00 N 0 O p N rn O O N C p C O 0 0 0 ,^-_.', - + E N lOi F MI8" m o z ai H W Ilk a III IIMmLI 0 J h o u O Z c o v v v u W IIII io Z v a c O _ z ., a zCL 'I u w? E o ¢ `m m m u t u y w d> Ln ,aw rra�y t��I 1' R���^ '� L4. I IN 0 T H C O N S U L T A N T S CLIENT: Village of Mount Prospect SITE: Formula Auto Repair Property - 310 W. Northwest Highway PROJECT NUMBER: T242906.3 w. ,. "0110 II-Trichloroethane 870,000,000 6,600 TABLE 7 Summary of Soil Gas Analytical Results Volatile Chemicals (VCs) 770,000 41,000 870,000 SAMPLE DATE: March 20 & 21, 2024 LABORATORY: Sterling Labs MATRIX: Air -Soil Gas Analytical Method: EPA Method 625/11-96/OIO WTO-15 LL 0.0033 10.041 10.0035 10.0031,1,2-Tichloroethane 170,0000,000 170,000 170,000 170,000 170,000 0.0033 0.041 10.0035 10.0031 10.0033I,I-Dichloroethane 870,000,000 690 81,000 4,200 500,000 '0.0024 10.0--1 10.0026 10.0023 10.0025 I,I-Dichloroethylene520,000,300 240 27,000 1,600 160,000 10.0024 10.030 c0.0025 X0.0023 10.0024 1,2,4 Tri chi ore -ene 1,000,110 5.4 800 25 4,300 10.0045 10.056 10.0047 c 0.0043 '0.0045 1,2-Dibromoethane 2.9 5.6 7.9 0.0078 1.1 0.048 7.9 0.0046 0.058 < 0.0039 c 0.0044 . 0.0047 1,2 Dichlorobenzene 11,000 11,000 6,700 290 11,000 1,700 11,000 < 0.00-6 < 0.046 < 0.00Z8 10.0034 10.00--5 chlor 1,2-Dioethane 67 130 180 0.099 10 0.81 76 1 0.0021 = 0.031 10.0026 0.0023 0.0025 Dichloropropane 240 470 110 0.31 36 2.3 260 0.002E 10.035 10.0029 10.0027 3.0028 1,4-Dichlorobenzene 8,400 6,400 6,400 1,20 0 8,400 6,800 8,400 = 0.0036 , 0.046 1 0.0058 10.0034 J.JJ36 2-Butanone (MEK) 380,000 360,000 15,000 6,400 380,000 40,000 380,000 0.0044 10.056 < 0.0047 0.0042 3.0073 Acetone 750,000 750,000 750,000 750,000 750,000 750,000 750,000 0.017 10.18 10.015 10.014 0.051 Benzene 420 800 1,100 0.37 41 2.8 300 00028 150.0°'` 0.0032 0.0047 0.0061 Bromodichloromethane 450,000 450,000 450,000 450,000 450,000 450,000 450,000 10.0040 10.051 10.0045 10.0038 0.0041 Bromoform 1,800 3,500 4,900 11 1,800 52 13,000 10.016 10.20 10.016 ,0.015 10.016 Carbondisulfide 1,500,000 1,500,000 48,000 780 81,000 5,300 500,000 0.0019 0.024 - 0.0020 0.079 • 0.0019 Carbon tetrachloride 290 550 770 0.21 24 1.5 180 0.0038 0.048 10.0040 10.0036 10.0038 Chlorobenzene 36,000 57,000 3,700 69 6,300 420 51,000 10.0028 10.035 10.0029 10.0026 c0.0022 Chia rodibromomethane 57,00 0 57,000 150 57,000 57,000 1 57,000 57,000 X 0.0040 1 0.051 10.0043 10.0038 c 0.0041 Chloroform 110 200 290 0.11 12 0.92 87 X0.0029 10.0- '0.0031 10.0028 10.0030 cis-1,2-Dichloroethylene 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 0.0024 ' 0.030 10.0025 10.0023 10.0024 Dichlorodifluoromethane 890,000 1,400,000 92,000 270 32,000 1,700 200,000 0.0033 C C71 1C.CC32 <C.CC28 <C.CC3C Ethylbenzene 59,000 59,000 8,500 1.3 150 9.3 1,100 C.CC26 31,01" 0.0028 .0.0025 10.0026 m&p-Xylene 52,000 52,000 3,100 130 16,000 820 52,000 '0.0052 91.0 10.0055 10.0050 10.0053 Methylbromide12,000 19,000 2,400 6.9 830 42 5,100 0.0058 10.074 10.0062 .00056 '0.0059 Methyl tertiary-butyl ether 1,200,000 1,200,000 23,000 3,700 420,000 24,000 1,200,000 ' 0.0022 1 0.027 10.002- 10.0021 10.0022 Methylene chloride 6,100 12,000 5,100 5.6 590 45 4,400 1 0.021 10.26 0.022. 0.020 10.021 Naphthalene 560 620 5.8 0.11 14 0.75 100 10.0032 0,89° < 0.0077 < 0.0030 c 0.0032 o-Xylene 41,000 41,000 2,600 120 14,000 790 41,000 1 0.0026 27.0 < 0.0028 0.0025 ' 0.0026 p-Dioxane 16 30 42 0.22 IS 2.3 110 10.0054 10.0026 D. D69 10.032 < 0.0057 10.0027 0.0052 10.0024 c 0.0055 3.3316 Styrene 34,00 034,000 16,000 1,400 34,000 8,500 34,000 Tetrachloroethylene 360 690 970 0.55 66 4 490 10.0041 0.24 0.11 10.0039 3.311 Toluene 140,000 140,000 50,000 6,200 140,000 40,000 140,000 0.0035 19.0 0.0058 <J.JJ22 9.9979 trans-1,2-Dichloroethylene 120,000 190,000 12,000 85 10,000 510 63,000 10.0024 10.030 10.0025 13.3323 10.0024 Trichloroethylene 1,700 3,300 1,500 1.5 180 12 1,300 0.0032 < 0.041 0.0091 10.0031 0.3333 Trichlorofluoromethane 2,100,000 3,400,000 220,000 860 97,000 5,600 600,000 0.0074 = 0.032 < 0.0036 < 0.0032 1 3.3331 Vinyl Acetate 160,000 250,000 1,600 250 28,000 1,600 170,000 0.021 10.27 0.022 = 0.020 10.021 Vinyl Chloride 760 3,000 3,000 0.29 30 4.6 440 0.0015 =. D.014 1 0.0016 10.0015 3.3316 Xylenes (total) 49,000 49,000 2,900 140 17,000 840 49,000 X0.00-8 12J.J J. J 383 10.007- 3.3379 is 1,3- D1 chi oro propene NE NE NE NE NE NE NE . 0.0027 '0.035 10.0029 = 3.3326 J.JJ28 trans 1,3 Dichloropropene NE NE NE NE NE NE NE . 0.0027 10.035 10.0029 1 3.3326 1 J.JJ28 Notes: Soil Gas Remediation Objective Values: Outdoorl nhalation Exposure Route- 742 Appendix B, Table G Indoorinhalation Exposure Route for Diffusion & Advection - 742 Appendix B, Table H Indoor Inhalation Exposure Route for Diffusion only- 742 Appendix B, Table I <= Analyte not detected (i.e. less than RL or MDL) or not included in analysis All data reported in milligrams per cubic meter(mg/m') unless otherwise noted NE = No remediation objective established by the IEPA for this constituent Exposure Route Exceedences: Bold/Shading indicates an exceedance in the referenced criteria. ' Outdoor, nhalation Exposure Route for Residential Properties exceedance o Outdoor Inhalation Exposure Route for Commercial/Industrial Properties exceedance ` Outdoor Inhalation Exposure Route for Construction Workers exceedance d Indoor Inhalation- diffusion & advection exceedance for Residential Properties ` Indoor Inhalation - diffusion only exceedance for Residential Properties r Indoor Inhalation- diffusion & advection exceedance for Industrial/Cammercial Properties a Indoor Inhalation - diffusion only exceedance for Industrial/Commercial Properties 'T R ���° R R N 0 T H CON S V1 L't'A. N TS CLIENT: Village of Mount Prospect SITE: Formula Auto Repair Property - 310 W. Northwest Highway PROJECT NUMBER: T242906.3 1,,1-Trichlooeth,006,600 ,1,2-Trichloroethane 170,0000 170,000 TABLE 7 CONT. Summary of Soil Gas Analytical Results Volatile Chemicals (VCs) 7I 70,000 IIID 4iull�1l�,Il0l�If . d 170,000 170,170,000 SAMPLE DATE: March 20 & 21, 2024 LABORATORY: Sterling Labs MATRIX: Air -Soil Gas Analytical Method: EPA Method 625/11-96/OIOb/TO-IS LL 0.041 0.0_9 0.041 0.0_9 I,I-Dichloroethane 870,00 0 1,300,000 90,000 690 81,000 4,200 500,000 '0.0-0 '0.029 I,I-Dichloroethylene 520,000 820,000 5,300 240 27,000 1,600 160,000 ).0-0 -. J.J22 1,2,4 Trichlorobenzene 1,0 00 1,600 110 5.4 800 25 4,300 3.355 ' 0.052 1,2-Dibromoethane 2.9 5.6 7.9 0.0078 1.1 0.048 7.9 c 0.057 '0.054 1,2 Dichlorobenzene 11,000 11,000 6,700 290 11,000 1,700 11,000 . 3.335 ' 0.042 1,2-Dichloroethane 67 130 180 0.099 10 0.81 76 :3.353 '0.029 Dichloropropane 240 470 1 110 0.31 36 2.3 260 '0.034 <J.3„ 1,4-Dichlorobenzene 8,400 8,400 6,400 1,200 8,400 6,800 8,400 X0.345 '0.042 2-Butanone(MEK) 380'000380,000 15,000 6,400 380,000 1 40,000 380,000 X3.355 '0.052 Acetone 750,000 750,000 750,000 750,000 750,000 750,000 750,000 0.18 < 31/ Benzene 420 800 1,100 0.37 41 2.8 300 0.11 1.51 Bromodichloromethane 450,000 450,000 450,000 450,000 450,000 450,000 450,00 0 0,050 <O.047 Bromoform 1,800 3,500 4,900 11 1,800 52 13,000 ,0.19 '018 Carbon disulfide 1,500,000 1,500,000 48,000 780 81,000 5,300 500,000 0.023 0.022 Carbon tetrachloride 290 550 770 0.21 24 1.5 180 0.047 0.044 Chlorobenzene 36,000 57,000 3,700 69 6,300 420 51,000 0.034 <0.0.. Chia rodibromomethane 57,000 57,000 150 57,000 57,000 57,000 57,000 X 0.033 ' 0.035 Chloroform 110 200 290 0.11 12 1 0.92 87 X0.036 '0.035 cis-1,2-Dichloroethylene 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 '0.030 '0.028 Dichlorodifluoromethane 890,000 1,400,000 92,000 270 32,000 1,700 200,000 X0.037 '0.035 Ethylbenzene 59'00059,000 8,500 1.3 150 9.3 1,100 '0.032 '0031 m&p-Xylene 52,000 52,000 3,100 130 16,000 820 52,000 '0.065 0.33 Methylbromide 12,000 19,000 2,400 6.9 830 42 5,100 ' 0.072 -. J.069 Methyl tertiary-butyl ether 1,200,000 1,200,000 23,000 3,700 420,000 24,000 1,200,000 t 0.021 t 0.02-' Methylene chloride 6,100 12,000 5,100 5.6 590 45 4,400 ' 0.26 -. D.25 Naphthalene 560 620 5.8 0.11 14 0.75 100 c 0.039 , J. J�7 o-Xylene 41,000 41,000 2,600 120 14,000 790 41,000 = J.1)--2 J. D58 p-Dioxane 16 30 42 0.22 IS 2.3 110 c 0.067 3.364 Styrene 34,000 34,000 16,000 1,400 34,000 8,500 34,000 20,030 Tetrachloroethylene 360 690 970 0.55 66 4 490 ' G.051 < J.J46 Toluene140,000 140,000 50,000 6,200 140,000 40,000 140,000 0.329 <J.J2 trans-1,2-Dichloroethylene 120,000 190,000 12,000 85 10,000 510 63,000 : ').X3 < J.J28 Trichloroethylene 1,700 3,300 1,500 1.5 180 12 1,300 ).343 <J.J'6 Trichlorofluoromethane 2,100,000 3,400,000 220,000 860 1 97,000 1 5,600 1 600,000 '0.040 Vinyl Acetate 160,000 250,000 1,600 250 28,000 1,600 170,000 'D.042 0.26 < 025 Vinyl Chloride 780 3,000 3,000 0.29 30 4.8 440 i 0.019 '00" 13 Xylenes (total) 49,000 49,000 2,900 140 17,000 840 49,000 0.09- cis 1,3-Dichloropropene NE NE NE NE NE NE NE 0.034 '0.032 trans 1,3 Dichloropropene NE NE NE NE NE NE NE 0.G34 ' 0.032 Notes: Soil Gas Remediation Objective Values: Outdoorl nhalation Exposure Route- 742 Appendix B, Table G Indoorinhalation Exposure Route for Diffusion & Advection - 742 Appendix B, Table H Indoor Inhalation Exposure Route for Diffusion only- 742 Appendix B, Table I c = Analyte not detected (i.e. less than RL or MDL) or not included in analysis All data reported in milligrams per cubic meter(mg/m3) unless otherwise noted NE = No remediation objective established by the IEPA for this constituent Exposure Route Exceedences: Bold/Shading indicates an exceedance in the referenced criteria. ' Outdoor, nhalation Exposure Route for Residential Properties exceedance o Outdoor Inhalation Exposure Route for Commercial/Industrial Properties exceedance ` Outdoor Inhalation Exposure Route for Construction Workers exceedance d Indoor Inhalation- diffusion &advection exceedance for Residential Properties ` Indoor Inhalation - diffusion only exceedance for Residential Properties r Indoor Inhalation- diffusion & advection exceedance for Industrial/Cammercial Properties a Indoor Inhalation - diffusion only exceedance for Industrial/Commercial Properties LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT lww RE N UI Soil Boring Logs Project Name: Formula Auto Repair Property Log of Boring !fit' U E R T H Project Location: 310 West Northwest Highway SB-1/TW-1 C O N S U L T A N T S Project Number: T242906.3 Sheet 1 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 30' CHECKED BY: SPB GWL DATE: 3/20/2024 GWL DEPTH: 16.6' 0 DRILLING METHOD: Geoprobe - Direct Push CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 WELL OJ @ 0- a Q B N , y U DESCRIPTION 2 a REMARKS CONSTRUCTION ami LU 0 m rn m cn m U) aa, o a zt w U d m No odors or staining noted throughout boring 0 0 Topsoil: Topsoil with commingled 1 Pp D - 12 ��- organic matter 0.0 Soil sample SB -1 Fill: Non-native fill consisting of silty 2 Pp D 4.0 12 clay commingled with trace amounts 0.0 containerized for -5 5 of gravel laboratory analysis; see Silty Clay: Brown gray silty clay, firm 3 Pp D 1.5 12 0.0 analytical reports to hard, low plasticity, moist 4 Pp D 3.5 12 0.0 1 Diameter -10 10 PVC 5 Pp D 1.0 18 0.0 Riser 6 Pp D 4.5 18 Silty Clay: Gray silty clay, firm to hard, 0.0 low plasticity, moist 15 15 7 Pp D 2.5 30 0.0 Depth to water = 8 Pp D 2.5 30 0.0 --- Groundwater sample TW -1 -20 20 containerized for laboratory 9 Pp D 2.5 30 0.0 analysis; see analytical reports [Siolty Sand: Brown gray silty sand, 10 Pp D 2.5 30 0.0 Screen -25 25 m ist 19.11- 11 Pp D 1.0 24 0.0 Silt: Gray silt, plastic, wet 29'1 - 12 Pp D 1.5 24 0.0 -30 30 End of boring at 30' bgs Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log of Boring !fit' U E R T H Project Location: 310 West Northwest Highway SB-2/TW-2 C O N S U L T A N T S Project Number: T242906.3 Sheet 2 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/21/2024 DATE FINISHED: 3/21/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 25' CHECKED BY: SPB GWL DATE: 3/21/2024 GWL DEPTH: 15.3' 0 DRILLING METHOD: Geoprobe - Direct Push CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 WELL OJ @ 0- a Q B N , y U DESCRIPTION 2 a REMARKS CONSTRUCTION ami m m m aa, o w U m LU 0 rn cn U) a zt d Petroleum odors noted from 0' - 10' 0 0 Concrete 1 Pp D - 12 328.0 Petroleum oil Fill: Non-native fill commingled with residue staining gravel and stone noted from 3.5' - 5' 2 Pp D 1.5 12 150.7 Silty Clay: Brown gray silty clay, firm, -5 5 low plasticity, moist, commingled with Soil sample SB -2 3 Pp D 2.5 24 trace amounts of gravel 309.6 containerized for laboratory Silty Clay: Brown gray silty clay, firm analysis; see to hard, low plasticity, moist analytical reports 4 Pp D 4.0 24 100.6 -10 10 5 Pp D 4.5 30 23.9 1 Diameter PVC Silty Clay: Gray silty clay, firm, low Riser 6 Pp D 3.5 30plasticity, moist 18.4 -15 15 Depth to 7 Pp D 1.5 24 16.5 Groundwater water = sample TW -2 15.3' containerized for 8 Pp D 1.0 24 7.2 laboratory Silty Sand: Brown gray silty sand,analysis; see Screen -20 20 moist analytical reports 4.2'- 14.2'- T 24.2' 24.2' 9 Pp D 2.0 30 5.9 _ Silt: Gray silt, plastic, saturated 10 Pp D 1.5 30 3.6 - -25 25 End of boring at 25' bgs -30 30 Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log of Boring !fit' U E R T H Project Location: 310 West Northwest Highway SB-3/TW-3 C O N S U L T A N T S Project Number: T242906.3 Sheet 3 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/21/2024 DATE FINISHED: 3/21/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 15' CHECKED BY: SPB GWL DATE: 3/21/2024 GWL DEPTH: 4.57' 0 DRILLING METHOD: Geoprobe - Direct Push CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 WELL OJ @ 0- a Q o N u y U DESCRIPTION 2 a REMARKS CONSTRUCTION ami LU 0 m rn m cn m U) aa, o a zt w U d m No odors or staining noted throughout boring 0 0 tl4i44!', Asphalt 1 Pp D 12 Fill: Non-native fill commingled with 0.0 1.. trace amounts of gravel and stone Diameter PVC Riser 2 Pp D 12 0.0 Depth to 5 5 Soil sample SB -3 water Silty Clay: Brown gray silty clay, soft containerized for to firm, low plasticity, moist laboratory 3 Pp D 1.0 21 0.0 analysis; see analytical reports Groundwater 4 Pp D 21 Silty Sand: Brown gray silty sand, 0 0 sample TW -3 saturated containerized for T.' laboratory Silty Clay: Brown gray silty clay, hard, -10 10 analysis; see Screen low plasticity, moist analytical reports 4.8'- .8 -14.8' 14.8' 5 Pp D 4.0 30 0.0 6 Pp D 4.0 30 0.0 -15 15 End of boring at 15' bgs Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite /k, Project Name: Formula Auto Repair Property Log Of Boring "'I"' L) E N O R 1 H Project Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 4 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 25' CHECKED BY: SPB GWL DATE: - GWL DEPTH: - 0 DRILLING METHOD: Geoprobe - Direct Push CONTRACTOR: Enviro-Dynamics, LLC 0 L 0 N d J O d 0 Z O C T F N E o N N O J z a Q 0. DESCRIPTION ° REMARKS IQ N N w 0 m m rn O N cn cn N a — W U d E 0 0 Asphalt No odors or staining 1 Pp D - 9 0.0 noted throughout boring Fill: Non-native fill commingled with gravel and stone 2 Pp D 9 0.0 5 5 Silty Clay: Brown gray silty clay, firm, low plasticity, Soil sample SB -4 containerized for 3 Pp D 2.5 18 moist 0.0 11 laboratory analysis; see analytical reports 4 Pp D - 18 0.0 Silty Sand: Brown gray silty sand, compact, wet T.' -10 10 Silty Clay: Brown gray silty clay, hard, low plasticity, moist 5 Pp D 3.0 30 0.0 Silty Clay: Gray silty clay, firm to hard, low plasticity, 6 Pp D 4.5 30 moist 0.0 -15 15 7 Pp D 4.0 30 0.0 8 Pp D 2.5 30 0.0 -20 20 9 Pp D 2.0 30 0.0 10 Pp D 3.0 30 0.0 Silt: Gray silt seam, compact, wet -25 25 End of boring at 25' bgs -30 30 Sp = Split Spoon Sample Pp = Push Probe Sample He = Hand Auger D = Discrete St = Shelby Tube C = Composite /k, Project Name: Formula Auto Repair Property Log Of Boring "'I"' L) E N O R 1 H Project Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 5 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/21/2024 DATE FINISHED: 3/21/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 8' CHECKED BY: SPB GWL DATE: - GWL DEPTH: - 0 DRILLING METHOD: Geoprobe - Direct Push CONTRACTOR: Enviro-Dynamics, LLC 0 L 0 N d J O d 0 Z O C T F N E o N N O J z a Q 0. DESCRIPTION ° REMARKS IQ N N UJ 0 m U) N U) m U) w N 0_.2 W U d E U 0 0 Concrete No Recovery 1 Pp D 3 0.0 Fill: Non-native sand fill 0.0 2 Pp D 12 Petroleum odors noted from 4' bgs through boring terminus -5 5 3 Pp D 12 69.7 Petroleum oil residue staining noted from 5' bgs through boring terminus Soil sample S13-5 containerized for laboratory analysis; see analytical reports 4 Pp D 12 123.2 End of boring at 8' bgs -10 10 Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite /k, Project Name: Formula Auto Repair Property Log Of Boring "'I"' "��u � � Q°°°��� N O R 1 H Project Location: 310 West Northwest Highway �r�,. �„ �N�r���rx SB -6 C O N S U L T A N T S Project Number: T242906.3 Sheet 6 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/21/2024 DATE FINISHED: 3/21/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 8' CHECKED BY: SPB GWL DATE: - GWL DEPTH: - 0 DRILLING METHOD: Geoprobe - Direct Push CONTRACTOR: Enviro-Dynamics, LLC 0 L 0 N d J O d 0 Z O C T F N E o N N O J z a Q 0. DESCRIPTION ° REMARKS IQ N N UJ 0 m U) N U) m U) N w 0_.2 W U d E U 0 0 Concrete Fill: Non-native fill comingled with gravel and stone 1 Pp D 12 5.3 2 Pp D 12 5.1 Petroleum odors and oil Silty Clay: Brown gray silty clay, firm, low plasticity, moist residue staining noted from 4' bgs through boring terminus -5 5 3 Pp D 2.5 21 92.6 Soil sample S13-6 containerized for laboratory analysis; see analytical reports 4 Pp D 2.5 21 156.2 End of boring at 8' bgs -10 10 Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 7 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a o N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION ami LU 0 m rn m cn m cn aa)i 0 a zt w 0 d m 0 0 Purged soil gas Topsoil: Topsoil commingled with PID reading: organic matter O.Oppm 1 Pp D 0 12 0.0 Teflon Tubing 1.5" Fill: Non-native fill consisting of silty clay commingled with trace amounts of Probe ravel Rod Silty Clay: Brown gray silty clay, hard, low plasticity, moist 2 Pp D 4.0 12 0.0 Soil Gas Implant (6") -5 5 EOB at 5' BGS Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 8 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/21/2024 DATE FINISHED: 3/21/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a o N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION aa) LU 0 m rn m cn m cn aa)i 0 a zt w 0 d m Purged soil gas PID reading: 52.Oppm 0 0 Concrete Fill: Non-native fill commingled with gravel and stone Petroleum odors 1 Pp D 12 328.0 noted throughout boring Teflon Tubing 1.5" Probe Rod Silty Clay: Brown gray silty clay, firm, low plasticity, moist, commingled with trace amounts of gravel Petroleum oil 2 Pp D 1.5 12 150.7 residue staining Soil Gas noted from 3.5-5' Implant (6") -5 5 End of boring at 5' bgs Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 9 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a B N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION ami m m m aa)i 0 w m LU 0 rn cn cn a zt 0 d 0 0 Purged soil gas Asphalt PID reading: 0.0 Fill: Non-native fill commingled with ppm trace amount of gravel and stone 1 Pp D 12 0.0 Teflon Tubing 1.5" Probe Rod 2 Pp D 12 0.0 Soil Gas Implant -5 5 EOB at 5' BGS Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 10 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a B N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION aa) m m m aa)i 0 w m LU 0 rn cn cn a zt 0 d 0 0 Purged soil gas Asphalt PID reading: 0.0 No Recovery ppm 1 Pp Teflon Tubing 1.5" Probe Rod 2 Pp Soil Gas Implant (6") -5 5 EOB at 5' BGS Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 11 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a B N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION aa) m m m aa)i 0 w m LU 0 rn cn cn a zt 0 d 0 0 Purged soil gas Asphalt PID reading: 0.0 No Recovery ppm 1 Pp Teflon Tubing 1.5" Probe Rod 2 Pp Soil Gas Implant (6") -5 5 EOB at 5' BGS Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R „JJ! E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 12 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a B N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION aa) m m m aa)i 0 w m LU 0 rn cn cn a zt 0 d 0 0 Purged soil gas Asphalt PID reading: 0.0 No Recovery ppm 1 Pp Teflon Tubing 1.5" Probe Rod 2 Pp Soil Gas Implant (6") -5 5 EOB at 5' BGS Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite Project Name: Formula Auto Repair Property Log Of Boring T R E N ORTHProject Location: 310 West Northwest Highway C O N S U L T A N T S Project Number: T242906.3 Sheet 13 of 13 BOREHOLE LOCATION: See Site Investigation Figure DATE BEGAN: 3/20/2024 DATE FINISHED: 3/20/2024 FIELD GEOLOGIST: AMG GROUND SURFACE ELEVATION: - TOTAL DEPTH OF BOREHOLE: 5.0' CHECKED BY: SPB GWL DATE: - GWL DEPTH DURING: - GWL DEPTH AFTER: - DRILLING METHOD: Push Probe CONTRACTOR: Enviro-Dynamics, LLC 0 0 o Z n F w E m 0 J WELL O @ a Q a B N u y U) U DESCRIPTION 2 a REMARKS CONSTRUCTION aa) m m m aa)i 0 w m LU 0 rn cn cn a zt 0 d 0 0 Purged soil gas Asphalt PID reading: 0.0 No Recovery ppm 1 Pp Teflon Tubing 1.5" Probe Rod 2 Pp Soil Gas Implant (6") -5 5 EOB at 5' BGS Sp = Split Spoon Sample Pp = Push Probe Sample Ha = Hand Auger D = Discrete St = Shelby Tube C = Composite LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT Al"RENUX Www Laboratory Analytical Reports 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com April 12, 2024 True North Consultants, Inc. 1000 East Warrenville Road Suite 140 Naperville, IL 60563 Telephone: (630) 717-2880 Fax: Analytical Report for Work Order: 024CO848 Revision 1 RE: T242906.3, Formula Auto, 310 W. Northwest Highway Dear True North Consultants, Inc.: Sterling Labs has received 6 samples for the referenced project on March 21, 2024 12:53. The analytical results are presented in the following report. All analyses were performed in accordance with the requirements of 35 IAC Pat 186 / TNI standards. Analyses were performed in accordance with methods as referenced on the analytical report. Those analytical results expressed on a dry weight basis are also noted on the analytical report. All analyses were performed within established holding time criteria, and all Quality Control criteria met EPA or laboratory specifications except when noted in the Case Narrative or Analytical Report. If required, an estimate of uncertainty for the analyses can be provided. Thank you for the opportunity to serve you and I look forward to working with you in the future. If you have any questions regarding the enclosed materials, please contact me at (847) 967-6666. Sincerely, Justice Kwateng Project Manager The information contained in this report and any attachments is confidential information intended only for the use of the individual or entities named above. The results of this report relate only to the samples as received and tested. Sterling Labs is not responsible for customer provided information found in the report that is used to calculate final results, if you have received this report in error, please notify us immediately by phone. This report shall not be reproduced, except in its entirety, unless written approval has been obtained from the laboratory. This analytical report shall become property of the Customer upon payment in full. Otherwise, Sterling Labs will be under no obligation to support, defend or dicuss the analytical report Pa eIof18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Customer: True North Consultants, Inc. Work Order Sample Summary Proiect: T242906.3, Formula Auto, 310 W. Northwest Highway WorkOrder: 024CO848 Laboratory ID Sample ID Tag Number Collection Date Date Received 024CO848-01 SB -1 03/20/2410:30 03/21/2412:53 024CO848-02 SB -2 03/21/24 09:20 03/21/24 12:53 024CO848-03 SB -3 03/20/2413:00 03/21/2412:53 024CO848-04 SB -4 03/20/2411:45 03/21/2412:53 024CO848-05 SB -5 03/21/2410:35 03/21/2412:53 024CO848-06 SB -6 03/21/2410:55 03/21/2412:53 Page 2 of 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Customer: True North Consultants, Inc. Proiect: T242906.3, Formula Auto, 310 W. Northwest Highway Case Narrative WorkOrder: 024CO848 Work Order: 024CO848 The samples were received on 3/21/2024 12:53:00 PM. The temperature of the cooler(s) at receipt was: Cooler: Temp C Default Cooler 3.8 The samples were received in good condition and were properly preserved. Inorganics, metals 6010 The Standard Reference Material (SRM) (Preparation Batch B24D0143) had recovery of Silver outside of control limits (34% recovery, QC Limits 59.8-111). This SRM is associated with the following samples: 024C0848-01,02,03,04 GCMS Semivolatiles 8270 PNA SIM 024CO848-01: The internal standards chrysene-d12 and perylene-d12 recovered outside control criteria (50% - 200% for both) at 46% and 47%, respectively. 024CO848-03: The internal standard chrysene-d12 recovered outside control criteria (50% - 200%) at 48%. 024CO848-04: The internal standards chrysene-d12 and perylene-d12 recovered outside control criteria (50% - 200% for both) at 49% for both. 024C0848-05: The internal standard perylene-d12 recovered outside control criteria (50% - 200%) at 289%. 024CO848-06: The internal standard perylene-d12 recovered outside control criteria (50% - 200%) at 218%. 024CO848-05: The sample was utilized for MS/MSD purpose. Several analytes recovered outside recovery criteria: MS: Benzo(g,h,i)perylene: Recovery 37%; LCL 48% MS: Naphthalene: Recovery 48%; LCL 69% MS: Perylene-d-12: Recovery 228; UCL 200 MSD Benzo(g,h,i)perylene: Recovery 32%; LCL 48% MSD: Naphthalene: Recovery 17%; LCL 69% Pa e3of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3'd Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com GC -MS Volatiles 8260B VOC B24D0225-BS1 and BSD1 had low recoveries for chloromethane at 56% and 68% below the lab control limit with an elevated RPD of 24% for bromomethane. 024C848-05 initially was run low level and had very low internal standard recoveries below 10% and potential loss of sample sensitivity, possibly due to reaction of sample with preservative. The sample was re -run with the methanol vial at dilution and had acceptable recoveries. The sample is reported as low as possible to MDL- lowest calibration point levels. Sample 024C848-05 had 2-Hexanone reported with an "E" flag (Value above quantitation range). The medium level dilution was below the reporting level. The detected value is reported. Page 4 of 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-1 Work Order: 024CO848 Collection Date: 03/20/2024 10:30 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-01 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5035 Prep Date: 04/03/24 08:15 Analyst: TC1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2,2 -Tetrachloroethane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2 -Trichloroethane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethane ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethene ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloroethane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloropropane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Butanone ND 0.0267 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Hexanone ND 0.0267 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 4-Methyl-2-pentanone ND 0.0267 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Acetone ND 0.0668 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Benzene ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromodichloromethane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromoform ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromomethane ND 0.0191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon disulfide ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon tetrachloride ND 0.0191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chlorobenzene ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroethane ND 0.00764 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroform ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloromethane ND 0.00764 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,2-Dichloroethene ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,3-Dichloropropene ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Dibromochloromethane ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Ethylbenzene ND 0.00764 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methyl tert-butyl ether ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methylene chloride ND 0.0191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Styrene ND 0.00764 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Tetrachloroethene ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Toluene ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,2-Dichloroethene ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,3-Dichloropropene ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Trichloroethene ND 0.00191 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Vinyl chloride ND 0.00382 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Xylenes, Total ND 0.0115 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Pa e5of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-1 Work Order: 024CO848 Collection Date: 03/20/2024 10:30 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-01 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3550 Prep Date: 04/02/24 14:50 Analyst: GEP Analyst: SAS ILEPA 1002562023-16 Mercury ND 0.0599 Acenaphthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Acenaphthylene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Anthracene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(a)anthracene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(a)pyrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(b)fluoranthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(g,h,i)perylene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(k)fluoranthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Chrysene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Dibenzo(a,h)anthracene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Fluoranthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Fluorene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Indeno(1,2,3-cd)pyrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Naphthalene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Phenanthrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Pyrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Metals by ICP -AES SW6010 D / SW3050 Prep Date: 04/03/24 09:54 Analyst: CS2 ILEPA 1002562023-16 Arsenic ND 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Barium 89.9 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Cadmium ND 0.301 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Chromium 20.9 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Lead 41.4 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Selenium ND 1.30 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Silver ND 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Mercury by CVAA SW7471B Prep Date: 03/26/24 12:58 Analyst: SAS ILEPA 1002562023-16 Mercury ND 0.0599 mg/Kg dry 1 03/26/2024 B24CO979 S24CO520 Wet Chemistry SM254OG Prep Date: 03/22/24 06:17 Analyst: PP1 Total Solids 78.1 0.100 % (Percent) 1 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 ILEPA 1002562023-16 pH 7.49 pH Units 1 03/26/2024 B24C1005 Pa e6of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-2 Work Order: 024CO848 Collection Date: 03/21/2024 09:20 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-02 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5035 Prep Date: 04/03/24 08:15 Analyst: TC1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2,2 -Tetrachloroethane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2 -Trichloroethane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethane ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethene ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloroethane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloropropane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Butanone ND 0.0288 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Hexanone ND 0.0288 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 4-Methyl-2-pentanone ND 0.0288 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Acetone ND 0.0720 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Benzene 3.59 0.173 mg/Kg dry 10 04/03/2024 B24DO159 S24DO074 Bromodichloromethane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromoform ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromomethane ND 0.0206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon disulfide ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon tetrachloride ND 0.0206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chlorobenzene ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroethane ND 0.00823 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroform ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloromethane ND 0.00823 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,2-Dichloroethene ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,3-Dichloropropene ND 0.00400 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Dibromochloromethane ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Ethylbenzene 3.76 0.865 mg/Kg dry 10 04/03/2024 B24DO159 S24DO074 Methyl tert-butyl ether ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methylene chloride ND 0.0200 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Styrene ND 0.00823 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Tetrachloroethene ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Toluene 0.999 0.900 mg/Kg dry 10 04/03/2024 B24DO159 S24DO074 trans-1,2-Dichloroethene ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,3-Dichloropropene ND 0.00400 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Trichloroethene ND 0.00206 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Vinyl chloride ND 0.00411 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Xylenes, Total 16.3 15.0 mg/Kg dry 10 04/03/2024 B24DO159 S24DO074 Page 7 of 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-2 Work Order: 02400848 Collection Date: 03/21/2024 09:20 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-02 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3550 Prep Date: 04/03/24 17:00 Analyst: GEP Analyst: SAS ILEPA 1002562023-16 Mercury ND 0.0623 Acenaphthene 0.0884 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Acenaphthylene 0.0928 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Anthracene 0.132 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Benzo(a)anthracene 0.428 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Benzo(a)pyrene 0.181 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Benzo(b)fluoranthene 0.155 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Benzo(g,h,i)perylene 0.114 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Benzo(k)fluoranthene 0.0346 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Chrysene 0.151 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Dibenzo(a,h)anthracene ND 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Fluoranthene 0.327 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Fluorene 0.156 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Indeno(1,2,3-cd)pyrene 0.0549 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Naphthalene 5.54 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Phenanthrene 0.469 0.0191 mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Pyrene 0.288 0.0191 Q mg/Kg dry 1 04/05/2024 B24DO132 S24DO144 Metals by ICP -AES SW6010 D / SW3050 Prep Date: 04/03/24 09:54 Analyst: CS2 ILEPA 1002562023-16 Arsenic 3.53 2.55 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Barium 65.0 2.55 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Cadmium 0.700 0.255 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Chromium 16.6 2.55 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Lead 47.9 2.55 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Selenium ND 1.30 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Silver ND 2.55 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Mercury by CVAA SW7471B Prep Date: 03/26/24 12:58 Analyst: SAS ILEPA 1002562023-16 Mercury ND 0.0623 mg/Kg dry 1 03/26/2024 B24CO979 S24CO520 Wet Chemistry SM254OG Prep Date: 03/22/24 06:17 Analyst: PP1 Total Solids 81.1 0.100 % (Percent) 1 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 ILEPA 1002562023-16 pH 7.31 pH Units 1 03/26/2024 B24C1005 Pa e8of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-3 Work Order: 024CO848 Collection Date: 03/20/2024 13:00 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-03 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5035 Prep Date: 04/03/24 08:15 Analyst: TC1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2,2 -Tetrachloroethane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2 -Trichloroethane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethane ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethene ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloroethane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloropropane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Butanone ND 0.0275 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Hexanone ND 0.0275 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 4-Methyl-2-pentanone ND 0.0275 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Acetone ND 0.0687 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Benzene ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromodichloromethane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromoform ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromomethane ND 0.0196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon disulfide ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon tetrachloride ND 0.0196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chlorobenzene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroethane ND 0.00786 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroform ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloromethane ND 0.00786 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,2-Dichloroethene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,3-Dichloropropene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Dibromochloromethane ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Ethylbenzene ND 0.00786 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methyl tert-butyl ether ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methylene chloride ND 0.0196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Styrene ND 0.00786 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Tetrachloroethene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Toluene ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,2-Dichloroethene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,3-Dichloropropene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Trichloroethene ND 0.00196 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Vinyl chloride ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Xylenes, Total ND 0.0118 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Pa e9of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-3 Work Order: 024CO848 Collection Date: 03/20/2024 13:00 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-03 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3550 Prep Date: 04/02/24 14:50 Analyst: GEP Analyst: SAS ILEPA 1002562023-16 Mercury ND 0.0538 Acenaphthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Acenaphthylene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Anthracene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(a)anthracene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(a)pyrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(b)fluoranthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(g,h,i)perylene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(k)fluoranthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Chrysene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Dibenzo(a,h)anthracene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Fluoranthene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Fluorene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Indeno(1,2,3-cd)pyrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Naphthalene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Phenanthrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Pyrene ND 0.0182 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Metals by ICP -AES SW6010 D / SW3050 Prep Date: 04/03/24 09:54 Analyst: CS2 ILEPA 1002562023-16 Arsenic 3.84 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Barium 255 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Cadmium 0.530 0.301 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Chromium 22.1 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Lead 38.8 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Selenium ND 1.30 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Silver ND 3.01 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Mercury by CVAA SW7471B Prep Date: 03/26/24 12:58 Analyst: SAS ILEPA 1002562023-16 Mercury ND 0.0538 mg/Kg dry 1 03/26/2024 B24CO979 S24CO520 Wet Chemistry SM254OG Prep Date: 03/22/24 06:17 Analyst: PP1 Total Solids 77.2 0.100 % (Percent) 1 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 ILEPA 1002562023-16 pH 7.48 pH Units 1 03/26/2024 B24C1005 Pa e10of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-4 Work Order: 024CO848 Collection Date: 03/20/2024 11:45 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-04 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5035 Prep Date: 04/03/24 08:15 Analyst: TC1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2,2 -Tetrachloroethane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2 -Trichloroethane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethane ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethene ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloroethane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloropropane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Butanone ND 0.0271 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Hexanone ND 0.0271 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 4-Methyl-2-pentanone ND 0.0271 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Acetone ND 0.0678 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Benzene ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromodichloromethane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromoform ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromomethane ND 0.0194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon disulfide ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon tetrachloride ND 0.0194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chlorobenzene ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroethane ND 0.00775 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroform ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloromethane ND 0.00775 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,2-Dichloroethene ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,3-Dichloropropene ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Dibromochloromethane ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Ethylbenzene ND 0.00775 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methyl tert-butyl ether ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methylene chloride ND 0.0194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Styrene ND 0.00775 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Tetrachloroethene ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Toluene ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,2-Dichloroethene ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,3-Dichloropropene ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Trichloroethene ND 0.00194 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Vinyl chloride ND 0.00387 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Xylenes, Total ND 0.0116 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Pa e11of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-4 Work Order: 024CO848 Collection Date: 03/20/2024 11:45 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-04 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3550 Prep Date: 04/02/24 14:50 Analyst: GEP Analyst: ES1 ILEPA 1002562023-16 Mercury ND 0.0575 Acenaphthene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Acenaphthylene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Anthracene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(a)anthracene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(a)pyrene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(b)fluoranthene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(g,h,i)perylene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Benzo(k)fluoranthene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Chrysene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Dibenzo(a,h)anthracene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Fluoranthene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Fluorene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Indeno(1,2,3-cd)pyrene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Naphthalene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Phenanthrene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Pyrene ND 0.0189 mg/Kg dry 1 04/04/2024 B24C1139 S24DO111 Metals by ICP -AES SW6010 D / SW3050 Prep Date: 04/03/24 09:54 Analyst: CS2 ILEPA 1002562023-16 Arsenic ND 2.90 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Barium 148 2.90 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Cadmium 0.290 0.290 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Chromium 19.5 2.90 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Lead 39.6 2.90 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Selenium ND 1.30 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Silver ND 2.90 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Mercury by CVAA SW7471B Prep Date: 03/28/24 13:23 Analyst: ES1 ILEPA 1002562023-16 Mercury ND 0.0575 mg/Kg dry 1 03/28/2024 1324C1114 S24CO565 Wet Chemistry SM254OG Prep Date: 03/22/24 06:17 Analyst: PP1 Total Solids 78.1 0.100 % (Percent) 1 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 ILEPA 1002562023-16 pH 7.49 pH Units 1 03/26/2024 B24C1005 Pa e12of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-5 Work Order: 024CO848 Collection Date: 03/21/2024 10:35 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-05 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5035 Prep Date: 04/05/24 08:35 Analyst: TC1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 1,1,2,2 -Tetrachloroethane ND 0.0125 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 1,1,2 -Trichloroethane ND 0.0200 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 1,1-Dichloroethane ND 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 1,1-Dichloroethene ND 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 1,2-Dichloroethane ND 0.0200 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 1,2-Dichloropropane ND 0.0300 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 2-Butanone ND 0.524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 2-Hexanone ND 0.160 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 4-Methyl-2-pentanone ND 0.524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Acetone ND 3.93 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Benzene 0.196 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Bromodichloromethane ND 0.105 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Bromoform ND 0.105 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Bromomethane ND 0.200 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Carbon disulfide ND 1.05 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Carbon tetrachloride ND 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Chlorobenzene ND 0.0262 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Chloroethane ND 0.131 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Chloroform ND 0.105 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Chloromethane ND 0.262 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 cis-1,2-Dichloroethene ND 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 cis-1,3-Dichloropropene ND 0.00963 mg/Kg dry 2 04/05/2024 B24DO295 324DO138 Dibromochloromethane ND 0.0125 mg/Kg dry 2 04/05/2024 B24DO295 324DO138 Ethylbenzene 0.804 0.262 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Methyl tert-butyl ether ND 0.105 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Methylene chloride ND 1.58 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Styrene ND 0.105 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Tetrachloroethene ND 0.128 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Toluene ND 1.05 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 trans-1,2-Dichloroethene ND 0.105 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 trans-1,3-Dichloropropene ND 0.0136 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Trichloroethene ND 0.0524 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Vinyl chloride ND 0.0100 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Xylenes, Total 13.2 1.05 mg/Kg dry 2 04/05/2024 B24DO295 S24DO138 Pa e13of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-5 Work Order: 024CO848 Collection Date: 03/21/2024 10:35 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-05 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3550 Prep Date: 04/02/24 16:40 Analyst: GEP Total Solids 92.5 0.100 ILEPA 1002562023-16 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 Acenaphthene 0.181 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Acenaphthylene 0.199 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Anthracene 0.223 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Benzo(a)anthracene 0.867 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Benzo(a)pyrene 0.501 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Benzo(b)fluoranthene 0.336 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Benzo(g,h,i)perylene 0.383 0.0859 A mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Benzo(k)fluoranthene 0.0963 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Chrysene 0.401 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Dibenzo(a,h)anthracene ND 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Fluoranthene 0.518 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Fluorene 0.258 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Indeno(1,2,3-cd)pyrene 0.203 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Naphthalene 3.55 0.0859 A mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Phenanthrene 0.763 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Pyrene 0.649 0.0859 mg/Kg dry 5 04/04/2024 B24DO076 S24DO111 Metals by ICP -AES SW6010 D / SW3050 Prep Date: 03/25/24 18:27 Analyst: CS2 ILEPA 1002562023-16 Barium 6.51 2.42 mg/Kg dry 1 04/02/2024 B24CO937 S24DO067 Wet Chemistry SM254OG Prep Date: 03/22/24 06:17 Analyst: PP1 Total Solids 92.5 0.100 % (Percent) 1 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 ILEPA 1002562023-16 pH 8.47 pH Units 1 03/26/2024 B24C1005 Pa e14of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-6 Work Order: 024CO848 Collection Date: 03/21/2024 10:55 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-06 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5035 Prep Date: 04/03/24 08:15 Analyst: TC1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1,2,2 -Tetrachloroethane ND 0.0774 mg/Kg dry 2 04/04/2024 B24DO225 S24DO108 1,1,2 -Trichloroethane ND 0.0774 mg/Kg dry 2 04/04/2024 B24DO225 S24DO108 1,1-Dichloroethane ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,1-Dichloroethene ND 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloroethane ND 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 1,2-Dichloropropane 0.00358 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Butanone ND 0.0275 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 2-Hexanone 0.394 0.0275 E mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 4-Methyl-2-pentanone ND 0.0275 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Acetone 0.372 0.0689 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Benzene ND 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromodichloromethane 0.00283 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromoform ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Bromomethane ND 0.0197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon disulfide ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Carbon tetrachloride ND 0.0197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chlorobenzene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroethane ND 0.00787 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloroform 0.0102 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Chloromethane ND 0.00787 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,2-Dichloroethene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 cis-1,3-Dichloropropene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Dibromochloromethane ND 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 324DO074 Ethylbenzene ND 0.00787 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methyl tert-butyl ether ND 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Methylene chloride ND 0.0197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Styrene ND 0.00787 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Tetrachloroethene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Toluene 0.00224 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,2-Dichloroethene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 trans-1,3-Dichloropropene ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Trichloroethene 0.00330 0.00197 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Vinyl chloride ND 0.00393 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Xylenes, Total 0.0171 0.0118 mg/Kg dry 1 04/03/2024 B24DO173 S24DO074 Pa e15of18 1e labs iL sterli*nff - O'Hare Location 509 N. 3"Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterWab.com Date Reported: 4/12/2024 Date Printed: 4/12/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: S13-6 Work Order: 024CO848 Collection Date: 03/21/2024 10:55 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Soil Lab ID: 024CO848-06 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3550 Prep Date: 04/02/24 16:40 Analyst: GEP Total Solids 79.0 0.100 ILEPA 1002562023-16 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 Acenaphthene 0.0672 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Acenaphthylene 0.0632 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Anthracene 0.0782 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Benzo(a)anthracene 0.260 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Benzo(a)pyrene 0.117 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Benzo(b)fluoranthene 0.0922 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Benzo(g,h,i)perylene 0.0632 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Benzo(k)fluoranthene ND 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Chrysene 0.146 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Dibenzo(a,h)anthracene ND 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Fluoranthene 0.163 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Fluorene 0.109 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Indeno(1,2,3-cd)pyrene ND 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Naphthalene 0.0932 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Phenanthrene 0.329 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Pyrene 0.167 0.0363 mg/Kg dry 2 04/04/2024 B24DO076 S24DO111 Metals by ICP -AES SW6010 D / SW3050 Prep Date: 04/03/24 09:54 Analyst: CS2 ILEPA 1002562023-16 Barium 96.9 2.96 mg/Kg dry 1 04/03/2024 B24DO143 S24DO090 Wet Chemistry SM254OG Prep Date: 03/22/24 06:17 Analyst: PP1 Total Solids 79.0 0.100 % (Percent) 1 03/22/2024 B24CO811 Wet Chemistry SW9045C Prep Date: 03/26/24 19:20 Analyst: LN1 ILEPA 1002562023-16 pH 8.37 pH Units 1 03/26/2024 B24C1005 ND - Not Detected at the Reporting Limit RL - Reporting / Quantitation Limit for the analysis J - Analyte detected below quantitation limits S - Spike Recovery outside accepted recovery limits Qualifiers: B - Analyte detected in the associated method blank P - RPD outside accepted recovery limits HT - Sample received past holding time E - Value above quantitation range A - Estimated result based on MS/MSD results H - Holding time exceeded * - Non -accredited parameter Q - Quality control issue. 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Northwest Highway Dear True North Consultants, Inc.: Sterling Labs has received 3 samples for the referenced project on March 21, 2024 12:53. The analytical results are presented in the following report. All analyses were performed in accordance with the requirements of 35 IAC Pat 186 / TNI standards. Analyses were performed in accordance with methods as referenced on the analytical report. Those analytical results expressed on a dry weight basis are also noted on the analytical report. All analyses were performed within established holding time criteria, and all Quality Control criteria met EPA or laboratory specifications except when noted in the Case Narrative or Analytical Report. If required, an estimate of uncertainty for the analyses can be provided. Thank you for the opportunity to serve you and I look forward to working with you in the future. If you have any questions regarding the enclosed materials, please contact me at (847) 967-6666. Sincerely, Tim Witrzek Data Integrity Manager The information contained in this report and any attachments is confidential information intended only for the use of the individual or entities named above. The results of this report relate only to the samples as received and tested. Sterling Labs is not responsible for customer provided information found in the report that is used to calculate final results. If you have received this report in error, please notify us immediately by phone. This report shall not be reproduced, except in its entirety, unless written approval has been obtained from the laboratory. This analytical report shall become property of the Customer upon payment in full. Otherwise, Sterling Labs will be under no obligation to support, defend or dicuss the analytical report Pa eIof11 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Customer: True North Consultants, Inc. Work Order Sample Summary Proiect: T242906.3, Formula Auto, 310 W. Northwest Highway WorkOrder: 024CO849 Laboratory ID Sample ID Tag Number Collection Date Date Received 024CO849-01 TW -1 03/20/2414:00 03/21/2412:53 024CO849-02 TW -2 03/21/2410:30 03/21/2412:53 02400849-03 TW -3 03/21/24 08:15 03/21/24 12:53 Page 2 of 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Customer: True North Consultants, Inc. Proiect: T242906.3, Formula Auto, 310 W. Northwest Highway Case Narrative WorkOrder: 024CO849 Work Order: 024CO849 The samples were received on 3/21/2024 12:53:00 PM. The temperature of the cooler(s) at receipt was: Cooler: Temp C Default Cooler 3.8 The samples were received in good condition and were properly preserved. GCMS Semivolatiles 8270 PNA SIM The recovery of Benzo(g,h,i)perylene in the CCV is 77%, below the 80% laboratory control limit. There is a possible low bias for this compound. All other QC is within control. Pa e3of11 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Date Reported: 4/8/2024 Date Printed: 4/8/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: TW -1 Work Order: 024CO849 Collection Date: 03/20/2024 14:00 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Groundwater Lab ID: 024CO849-01 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5030 Prep Date: 03/27/24 11:17 Analyst: WH1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1,2,2 -Tetrachloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1,2 -Trichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1-Dichloroethane ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,2-Dichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,2-Dichloropropane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 2-Butanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 2-Hexanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 4-Methyl-2-pentanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 Acetone ND 0.0700 mg/L 1 03/27/2024 B24C1158 S24CO591 Benzene ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromodichloromethane ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromoform ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromomethane ND 0.0400 mg/L 1 03/27/2024 B24C1158 S24CO591 Carbon disulfide ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Carbon tetrachloride ND 0.0200 mg/L 1 03/27/2024 B24C1158 S24CO591 Chlorobenzene ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloroform ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloromethane ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 cis-1,2-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 cis-1,3-Dichloropropene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Dibromochloromethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Ethylbenzene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Methyl tert-butyl ether ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Methylene chloride ND 0.0200 mg/L 1 03/27/2024 B24C1158 S24CO591 Styrene ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 Tetrachloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Toluene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 trans-1,2-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 trans-1,3-Dichloropropene ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 Trichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Vinyl chloride ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Xylenes, Total ND 0.0120 mg/L 1 03/27/2024 B24C1158 S24CO591 Page 4 of 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Date Reported: 4/8/2024 Date Printed: 4/8/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: TW -1 Work Order: 024CO849 Collection Date: 03/20/2024 14:00 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Groundwater Lab ID: 024CO849-01 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3510 Prep Date: 03/25/24 15:15 Analyst: GEP ILEPA 1002562023-16 ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Barium Acenaphthene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Acenaphthylene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Anthracene ND 0.000769 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(a)anthracene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(a)pyrene ND 0.000769 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(b)fluoranthene ND 0.000769 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(g,h,i)perylene ND 0.00115 Q, S1 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(k)fluoranthene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Bis(2-ethylhexyl)phthalate ND 0.00962 mg/L 1 04/02/2024 B24CO927 S24DO052 Chrysene ND 0.00154 mg/L 1 04/02/2024 B24CO927 S24DO052 Dibenzo(a,h)anthracene ND 0.00154 mg/L 1 04/02/2024 B24CO927 S24DO052 Fluoranthene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Fluorene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Indeno(1,2,3-cd)pyrene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Naphthalene ND 0.00115 mg/L 1 04/02/2024 B24CO927 S24DO052 Phenanthrene ND 0.00154 mg/L 1 04/02/2024 B24CO927 S24DO052 Pyrene ND 0.000769 mg/L 1 04/02/2024 B24CO927 S24DO052 Metals by ICP -AES SW6010 D / SW3015 Prep Date: 04/02/24 15:12 Analyst: CS2 ILEPA 1002562023-16 Arsenic ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Barium 0.229 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Cadmium ND 0.00500 mg/L 1 04/02/2024 B24DO104 S24DO067 Chromium ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Lead ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Selenium ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Silver ND 0.00500 mg/L 1 04/02/2024 B24DO104 S24DO067 Mercury by CVAA SW7470A Prep Date: 03/29/24 09:07 Analyst: ES1 ILEPA 1002562023-16 Mercury ND 0.00040 mg/L 1 03/29/2024 B24C1143 S24CO607 Pa e5of11 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Date Reported: 4/8/2024 Date Printed: 4/8/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: TW -2 Work Order: 024CO849 Collection Date: 03/21/2024 10:30 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Groundwater Lab ID: 024CO849-02 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5030 Prep Date: 03/27/24 11:17 Analyst: WH1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1,2,2 -Tetrachloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1,2 -Trichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1-Dichloroethane ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,2-Dichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,2-Dichloropropane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 2-Butanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 2-Hexanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 4-Methyl-2-pentanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 Acetone ND 0.0700 mg/L 1 03/27/2024 B24C1158 S24CO591 Benzene ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromodichloromethane ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromoform ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromomethane ND 0.0400 mg/L 1 03/27/2024 B24C1158 S24CO591 Carbon disulfide ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Carbon tetrachloride ND 0.0200 mg/L 1 03/27/2024 B24C1158 S24CO591 Chlorobenzene ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloroform ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloromethane ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 cis-1,2-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 cis-1,3-Dichloropropene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Dibromochloromethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Ethylbenzene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Methyl tert-butyl ether ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Methylene chloride ND 0.0200 mg/L 1 03/27/2024 B24C1158 S24CO591 Styrene ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 Tetrachloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Toluene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 trans-1,2-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 trans-1,3-Dichloropropene ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 Trichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Vinyl chloride ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Xylenes, Total ND 0.0120 mg/L 1 03/27/2024 B24C1158 S24CO591 Pa e6of11 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Date Reported: 4/8/2024 Date Printed: 4/8/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: TW -2 Work Order: 024CO849 Collection Date: 03/21/2024 10:30 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Groundwater Lab ID: 024CO849-02 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3510 Prep Date: 03/25/24 15:15 Analyst: GEP ILEPA 1002562023-16 ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Barium Acenaphthene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Acenaphthylene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Anthracene ND 0.000784 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(a)anthracene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(a)pyrene ND 0.000784 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(b)fluoranthene ND 0.000784 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(g,h,i)perylene ND 0.00118 Q, S1 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(k)fluoranthene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Bis(2-ethylhexyl)phthalate ND 0.00980 mg/L 1 04/02/2024 B24CO927 S24DO052 Chrysene ND 0.00157 mg/L 1 04/02/2024 B24CO927 S24DO052 Dibenzo(a,h)anthracene ND 0.00157 mg/L 1 04/02/2024 B24CO927 S24DO052 Fluoranthene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Fluorene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Indeno(1,2,3-cd)pyrene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Naphthalene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Phenanthrene ND 0.00157 mg/L 1 04/02/2024 B24CO927 S24DO052 Pyrene ND 0.000784 mg/L 1 04/02/2024 B24CO927 S24DO052 Metals by ICP -AES SW6010 D / SW3015 Prep Date: 04/02/24 15:12 Analyst: CS2 ILEPA 1002562023-16 Arsenic ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Barium 0.606 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Cadmium ND 0.00500 mg/L 1 04/02/2024 B24DO104 S24DO067 Chromium ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Lead ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Selenium ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Silver ND 0.00500 mg/L 1 04/02/2024 B24DO104 S24DO067 Mercury by CVAA SW7470A Prep Date: 03/29/24 09:07 Analyst: ES1 ILEPA 1002562023-16 Mercury ND 0.00040 mg/L 1 03/29/2024 B24C1143 S24CO607 Page 7 of 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Date Reported: 4/8/2024 Date Printed: 4/8/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: TW -3 Work Order: 024CO849 Collection Date: 03/21/2024 08:15 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Groundwater Lab ID: 024CO849-03 Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Volatile Organic Compounds by GC/MS SW8260B / SW5030 Prep Date: 03/27/24 11:17 Analyst: WH1 ILEPA 1002562023-16 1,1,1 -Trichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1,2,2 -Tetrachloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1,2 -Trichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1-Dichloroethane ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 1,1-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,2-Dichloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 1,2-Dichloropropane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 2-Butanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 2-Hexanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 4-Methyl-2-pentanone ND 0.0280 mg/L 1 03/27/2024 B24C1158 S24CO591 Acetone ND 0.0700 mg/L 1 03/27/2024 B24C1158 S24CO591 Benzene ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromodichloromethane ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromoform ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Bromomethane ND 0.0400 mg/L 1 03/27/2024 B24C1158 S24CO591 Carbon disulfide ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Carbon tetrachloride ND 0.0200 mg/L 1 03/27/2024 B24C1158 S24CO591 Chlorobenzene ND 0.00200 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloroethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloroform ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Chloromethane ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 cis-1,2-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 cis-1,3-Dichloropropene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Dibromochloromethane ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Ethylbenzene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Methyl tert-butyl ether 0.00421 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Methylene chloride ND 0.0200 mg/L 1 03/27/2024 B24C1158 S24CO591 Styrene ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 Tetrachloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Toluene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 trans-1,2-Dichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 trans-1,3-Dichloropropene ND 0.00800 mg/L 1 03/27/2024 B24C1158 S24CO591 Trichloroethene ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Vinyl chloride ND 0.00400 mg/L 1 03/27/2024 B24C1158 S24CO591 Xylenes, Total ND 0.0120 mg/L 1 03/27/2024 B24C1158 S24CO591 Pa e8of11 1e labs iL sterli*nff - O'Hare Location 509 N. 3m Avenue Des Plaines, IL 60016-1162 P 847.967.6666 800.246.0663 F 847.967.6735 www.thesterlinglab.com Date Reported: 4/8/2024 Date Printed: 4/8/2024 Analytical Results Customer: True North Consultants, Inc. Client Sample ID: TW -3 Work Order: 024CO849 Collection Date: 03/21/2024 08:15 Project: T242906.3, Formula Auto, 310 W. Northwest Highway Matrix: Groundwater Lab ID: 024CO849-03 (Continued) Analyses Result RL Qualifier Units DF Date Analyzed Batch AnaBatch Semivolatile Organic Compounds by GC/MSW8270D SIM / SW3510 Prep Date: 03/25/24 15:15 Analyst: GEP ILEPA 1002562023-16 ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Barium Acenaphthene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Acenaphthylene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Anthracene ND 0.000790 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(a)anthracene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(a)pyrene ND 0.000790 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(b)fluoranthene ND 0.000790 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(g,h,i)perylene ND 0.00118 Q, S1 mg/L 1 04/02/2024 B24CO927 S24DO052 Benzo(k)fluoranthene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Bis(2-ethylhexyl)phthalate ND 0.00987 mg/L 1 04/02/2024 B24CO927 S24DO052 Chrysene ND 0.00158 mg/L 1 04/02/2024 B24CO927 S24DO052 Dibenzo(a,h)anthracene ND 0.00158 mg/L 1 04/02/2024 B24CO927 S24DO052 Fluoranthene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Fluorene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Indeno(1,2,3-cd)pyrene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Naphthalene ND 0.00118 mg/L 1 04/02/2024 B24CO927 S24DO052 Phenanthrene ND 0.00158 mg/L 1 04/02/2024 B24CO927 S24DO052 Pyrene ND 0.000790 mg/L 1 04/02/2024 B24CO927 S24DO052 Metals by ICP -AES SW6010 D / SW3015 Prep Date: 04/02/24 15:12 Analyst: CS2 ILEPA 1002562023-16 Arsenic ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Barium 0.218 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Cadmium ND 0.00500 mg/L 1 04/02/2024 B24DO104 S24DO067 Chromium ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Lead ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Selenium ND 0.0500 mg/L 1 04/02/2024 B24DO104 S24DO067 Silver ND 0.00500 mg/L 1 04/02/2024 B24DO104 S24DO067 Mercury by CVAA SW7470A Prep Date: 03/29/24 09:07 Analyst: ES1 ILEPA 1002562023-16 Mercury ND 0.00040 mg/L 1 03/29/2024 B24C1143 S24CO607 ND - Not Detected at the Reporting Limit RL - Reporting / Quantitation Limit for the analysis J - Analyte detected below quantitation limits S - Spike Recovery outside accepted recovery limits Qualifiers: B - Analyte detected in the associated method blank P - RPD outside accepted recovery limits HT - Sample received past holding time E - Value above quantitation range A - Estimated result based on MS/MSD results H - Holding time exceeded "- Non -accredited parameter Q - Quality control issue. Please see case narrative Pa e9of11 0 C: C 0 0 Z a) c a C -C t c 2 Pa e10af11 xq j,4 �Y WN 0 c II Z ;4 II a II OA i vi .2 5 . ....... .. 1T, %,P, r T. E E Fz E E . . . . . . . . . . . . . . Pa e10af11 LAI NW Ii r Wl ►: L: .0 T F- F- 'i 2 IL a O O O O LOM N 00 r N N O O N N Q U a) a) O s O O U a) N a) L a N Q d CJ E -0 ^E^` ON Cl) U U ^W W U w � a c m � C N s F- Q N N � E u)a Z O U S u 7 � E O p T U E .2 U O O C m F C u H a O O co LO N r N O N N C O N N a> rn a) in E op a) N E O oU - Q) Q eO w Oa� aD V) co U ami Q LO) O N Q f0 d O mO — cn L .. a� L O O cu O O cn � Fs- oou O Q) (U A a) O O U N a) N a N N d CJ E -0 N ON Cl) U U Q1 m ? Z � C0 U w � a c m � C N O Q N N � E u)a Z O U S u 7 � E O p T U E .2 U O O C m F C u H I� `n 4 O Pa e 11 Of 11 bbs 1Jn//fi r �R March 30, 2024 True North Consultants, Inc. 1000 East Warrenville Road Naperville, IL 60563 Telephone: (630) 717-2880 Fax: (630) 689-5881 2242 West Harrison St., Suite 200, Chicago, IL 60612-3766 Tel: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Analytical Report for Work Order: 24030412 Revision 0 RE: T242906.3, Formula Auto, 310 W. Northwest Highway Dear True North Consultants, Inc.: Sterling Labs received 7 samples for the referenced project on 3/21/2024 5:46:00 PM. The analytical results are presented in the following report. All analyses were performed in accordance with methods as referenced on the analytical report and were performed within established holding time criteria. All Quality Control criteria met TNI or laboratory specifications except when noted in the Case Narrative, Analytical Report or Sample Receipt Checklist. If required, an estimate of uncertainty for the analyses can be provided. A listing of accredited methods/parameters can also be provided. Thank you for the opportunity to serve you and I look forward to working with you in the future. If you have any questions regarding the enclosed materials, please contact me at (312) 733-0551. Sincerely, Craig Chawla Project Manager The information contained in this report and any attachments is confidential information intended only for the use of the individual or entities named above. The results of this report relate only to the samples as received and tested. Sterling labs is not responsible for customer provided information found in the report that is used to calculate final results. If you have received this report in error, please notify us immediately by phone. This report shall not be reproduced, except in its entirety, unless written approval has been obtained from the laboratory. This analytical report shall become property of the Customer upon payment in full. Otherwise, Sterling Labs will be under no obligation to support, defend or discuss the analytical report. Page 1 of 19 �I@ labs 111sterlingDate: March 30, 2024 Customer: True North Consultants, Inc. Project: T242906.3, Formula Auto, 310 W. Northwest Highway Work Order Sample Summary Work Order: 24030412 Revision 0 Lab Sample ID Customer Sample ID 24030412-OOIA SG -1 24030412-002A SG -2 24030412-003A SG -3 24030412-004A SG -4 24030412-005A SG -5 24030412-006A SG -6 24030412-007A SG -7 Tag Number Collection Date Date Received 3/20/2024 10:15:00 AM 3/21/2024 3/20/2024 8:40:00 AM 3/21/2024 3/20/2024 12:40:00 PM 3/21/2024 3/20/2024 9:55:00 AM 3/21/2024 3/20/2024 9:30:00 AM 3/21/2024 3/20/2024 9:15:00 AM 3/21/2024 3/20/2024 9:05:00 AM 3/21/2024 Page 2 of 19 %w labs Date: March 30, 2024 llH��usterling Customer: True North Consultants, Inc. Project: T242906.3, Formula Auto, 310 W. Northwest Highway Case Narrative Work Order: 24030412 Revision 0 TO -15 results that are reported in mg/m3 are calculated based on a temperature of 25°C, atmospheric pressure of 760 mm Hg, and the molecular weight of the analyte. QC - Quality Control MB - Method Blank LCS(D) - Lab Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) RPD - Relative Percent Difference VOC - Volatile Organic Compound SVOC - Semi -Volatile Organic Compound PNA/PAH - Polynuclear Aromatic Hydrocarbon PCB - Polychlorinated Biphenyls Page 3 of 19 "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -I Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 10:15:00 AM Lab ID: 24030412-OOIA Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone 0 Acetone Benzene 0 Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane 0 Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene Tetrachloroethene Toluene 0 trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.0033 mg/m3 2 3/23/2024 ND 0.0033 mg/m3 2 3/23/2024 ND 0.0024 mg/m3 2 3/23/2024 ND 0.0024 mg/m3 2 3/23/2024 ND 0.0045 mg/m3 2 3/23/2024 ND 0.0046 mg/m' 2 3/23/2024 ND 0.0036 mg/m3 2 3/23/2024 ND 0.0024 mg/m3 2 3/23/2024 ND 0.0028 mg/m3 2 3/23/2024 ND 0.0036 mg/m3 2 3/23/2024 ND 0.0054 mg/m3 2 3/23/2024 .0044 0.0044 mg/m3 2 3/23/2024 0.017 0.014 mg/m3 2 3/23/2024 .0028 0.0019 mg/m3 2 3/23/2024 ND 0.0040 mg/m3 2 3/23/2024 ND 0.016 mg/m3 2 3/23/2024 ND 0.0058 mg/m3 2 3/23/2024 ND 0.0019 mg/m3 2 3/23/2024 ND 0.0038 mg/m3 2 3/23/2024 ND 0.0028 mg/m3 2 3/23/2024 ND 0.0029 mg/m3 2 3/23/2024 ND 0.0024 mg/m3 2 3/23/2024 ND 0.0027 mg/m3 2 3/23/2024 ND 0.0051 mg/m3 2 3/23/2024 .0033 0.0030 mg/m3 2 3/23/2024 ND 0.0026 mg/m' 2 3/23/2024 ND 0.0052 mg/m3 2 3/23/2024 ND 0.0022 mg/m3 2 3/23/2024 ND 0.021 mg/m3 2 3/23/2024 ND 0.0032 mg/m3 2 3/23/2024 ND 0.0026 mg/m3 2 3/23/2024 ND 0.0026 mg/m3 2 3/23/2024 ND 0.0041 mg/m3 2 3/23/2024 .0035 0.0023 mg/m3 2 3/23/2024 ND 0.0024 mg/m3 2 3/23/2024 ND 0.0027 mg/m3 2 3/23/2024 ND 0.0032 mg/m3 2 3/23/2024 ND 0.0034 mg/m3 2 3/23/2024 ND 0.021 mg/m3 2 3/23/2024 ND 0.0015 mg/m3 2 3/23/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 4 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lQ� lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -1 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 10:15:00 AM Lab ID: 24030412-OOIA Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS TO -15 Prep Date: 3/22/2024 Analyst: KWV ORELAP IL300001 Xylenes, Total ND 0.0078 mg/m3 2 3/23/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 5 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -2 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 8:40:00 AM Lab ID: 24030412-002A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.041 mg/m3 25 3/23/2024 ND 0.041 mg/m3 25 3/23/2024 ND 0.031 mg/m3 25 3/23/2024 ND 0.030 mg/m3 25 3/23/2024 ND 0.056 mg/m3 25 3/23/2024 ND 0.058 mg/m3 25 3/23/2024 ND 0.046 mg/m3 25 3/23/2024 ND 0.031 mg/m3 25 3/23/2024 ND 0.035 mg/m3 25 3/23/2024 ND 0.046 mg/m3 25 3/23/2024 ND 0.069 mg/m3 25 3/23/2024 ND 0.056 mg/m3 25 3/23/2024 ND 0.18 mg/m3 25 3/23/2024 150 0.61 mg/m3 625 3/26/2024 ND 0.051 mg/m3 25 3/23/2024 ND 0.20 mg/m3 25 3/23/2024 ND 0.074 mg/m3 25 3/23/2024 ND 0.024 mg/m3 25 3/23/2024 ND 0.048 mg/m3 25 3/23/2024 ND 0.035 mg/m3 25 3/23/2024 ND 0.037 mg/m3 25 3/23/2024 ND 0.030 mg/m3 25 3/23/2024 ND 0.035 mg/m3 25 3/23/2024 ND 0.065 mg/m3 25 3/23/2024 0.071 0.038 mg/m3 25 3/23/2024 31 0.83 mg/m' 625 3/26/2024 91 1.7 mg/m3 625 3/26/2024 ND 0.027 mg/m3 25 3/23/2024 ND 0.26 mg/m3 25 3/23/2024 0.89 0.040 mg/m3 25 3/23/2024 27 0.83 mg/m3 625 3/26/2024 ND 0.032 mg/m3 25 3/23/2024 0.24 0.052 mg/m3 25 3/23/2024 19 0.72 mg/m3 625 3/26/2024 ND 0.030 mg/m3 25 3/23/2024 ND 0.035 mg/m3 25 3/23/2024 ND 0.041 mg/m3 25 3/23/2024 ND 0.043 mg/m3 25 3/23/2024 ND 0.27 mg/m3 25 3/23/2024 ND 0.019 mg/m3 25 3/23/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 6of19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lQ� lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -2 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 8:40:00 AM Lab ID: 24030412-002A Matrix: Air Analyses Result Volatile Organic Compounds in Air by GC/MS TO -15 ORELAP IL300001 Xylenes, Total 120 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter RL Qualifier Units DF Date Analyzed Prep Date: 3/22/2024 Analyst: KWV 2.5 mg/m3 625 3/26/2024 Page 7 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -3 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 12:40:00 PM Lab ID: 24030412-003A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone Acetone Benzene 0 Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene Tetrachloroethene Toluene 0 trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene 0 Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.0035 mg/m3 2 3/26/2024 ND 0.0035 mg/m3 2 3/26/2024 ND 0.0026 mg/m3 2 3/26/2024 ND 0.0025 mg/m3 2 3/26/2024 ND 0.0047 mg/m3 2 3/26/2024 ND 0.0049 mg/m' 2 3/26/2024 ND 0.0038 mg/m3 2 3/26/2024 ND 0.0026 mg/m3 2 3/26/2024 ND 0.0029 mg/m3 2 3/26/2024 ND 0.0038 mg/m3 2 3/26/2024 ND 0.0057 mg/m3 2 3/26/2024 ND 0.0047 mg/m3 2 3/26/2024 ND 0.015 mg/m3 2 3/26/2024 .0032 0.0020 mg/m3 2 3/26/2024 ND 0.0043 mg/m3 2 3/26/2024 ND 0.016 mg/m3 2 3/26/2024 ND 0.0062 mg/m3 2 3/26/2024 ND 0.0020 mg/m3 2 3/26/2024 ND 0.0040 mg/m3 2 3/26/2024 ND 0.0029 mg/m3 2 3/26/2024 ND 0.0031 mg/m3 2 3/26/2024 ND 0.0025 mg/m3 2 3/26/2024 ND 0.0029 mg/m3 2 3/26/2024 ND 0.0054 mg/m3 2 3/26/2024 ND 0.0032 mg/m3 2 3/26/2024 ND 0.0028 mg/m' 2 3/26/2024 ND 0.0055 mg/m3 2 3/26/2024 ND 0.0023 mg/m3 2 3/26/2024 ND 0.022 mg/m3 2 3/26/2024 ND 0.0033 mg/m3 2 3/26/2024 ND 0.0028 mg/m3 2 3/26/2024 ND 0.0027 mg/m3 2 3/26/2024 0.12 0.0043 mg/m3 2 3/26/2024 .0038 0.0024 mg/m3 2 3/26/2024 ND 0.0025 mg/m3 2 3/26/2024 ND 0.0029 mg/m3 2 3/26/2024 .0091 0.0034 mg/m3 2 3/26/2024 ND 0.0036 mg/m3 2 3/26/2024 ND 0.022 mg/m3 2 3/26/2024 ND 0.0016 mg/m3 2 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 8of19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 sterlin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -3 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 12:40:00 PM Lab ID: 24030412-003A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS TO -15 Prep Date: 3/22/2024 Analyst: KWV ORELAP IL300001 Xylenes, Total ND 0.0083 mg/m3 2 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 9 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -4 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:55:00 AM Lab ID: 24030412-004A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone Acetone Benzene 0 Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.0031 mg/m3 2 3/26/2024 ND 0.0031 mg/m3 2 3/26/2024 ND 0.0023 mg/m3 2 3/26/2024 ND 0.0023 mg/m3 2 3/26/2024 ND 0.0043 mg/m3 2 3/26/2024 ND 0.0044 mg/m' 2 3/26/2024 ND 0.0034 mg/m3 2 3/26/2024 ND 0.0023 mg/m3 2 3/26/2024 ND 0.0027 mg/m3 2 3/26/2024 ND 0.0034 mg/m3 2 3/26/2024 ND 0.0052 mg/m3 2 3/26/2024 ND 0.0042 mg/m3 2 3/26/2024 ND 0.014 mg/m3 2 3/26/2024 .0047 0.0018 mg/m3 2 3/26/2024 ND 0.0038 mg/m3 2 3/26/2024 ND 0.015 mg/m3 2 3/26/2024 ND 0.0056 mg/m3 2 3/26/2024 0.039 0.0018 mg/m3 2 3/26/2024 ND 0.0036 mg/m3 2 3/26/2024 ND 0.0026 mg/m3 2 3/26/2024 ND 0.0028 mg/m3 2 3/26/2024 ND 0.0023 mg/m3 2 3/26/2024 ND 0.0026 mg/m3 2 3/26/2024 ND 0.0049 mg/m3 2 3/26/2024 ND 0.0028 mg/m3 2 3/26/2024 ND 0.0025 mg/m' 2 3/26/2024 ND 0.0050 mg/m3 2 3/26/2024 ND 0.0021 mg/m3 2 3/26/2024 ND 0.020 mg/m3 2 3/26/2024 ND 0.0030 mg/m3 2 3/26/2024 ND 0.0025 mg/m3 2 3/26/2024 ND 0.0024 mg/m3 2 3/26/2024 ND 0.0039 mg/m3 2 3/26/2024 ND 0.0022 mg/m3 2 3/26/2024 ND 0.0023 mg/m3 2 3/26/2024 ND 0.0026 mg/m3 2 3/26/2024 ND 0.0031 mg/m3 2 3/26/2024 ND 0.0032 mg/m3 2 3/26/2024 ND 0.020 mg/m3 2 3/26/2024 ND 0.0015 mg/m3 2 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 10 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lQ� lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -4 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:55:00 AM Lab ID: 24030412-004A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS TO -15 Prep Date: 3/22/2024 Analyst: KWV ORELAP IL300001 Xylenes, Total ND 0.0075 mg/m3 2 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 11 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -5 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:30:00 AM Lab ID: 24030412-005A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone 0 Acetone Benzene 0 Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene 0 Tetrachloroethene Toluene 0 trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.0033 mg/m3 2 3/27/2024 ND 0.0033 mg/m3 2 3/27/2024 ND 0.0025 mg/m3 2 3/27/2024 ND 0.0024 mg/m3 2 3/27/2024 ND 0.0045 mg/m3 2 3/27/2024 ND 0.0047 mg/m' 2 3/27/2024 ND 0.0036 mg/m3 2 3/27/2024 ND 0.0025 mg/m3 2 3/27/2024 ND 0.0028 mg/m3 2 3/27/2024 ND 0.0036 mg/m3 2 3/27/2024 ND 0.0055 mg/m3 2 3/27/2024 .0073 0.0045 mg/m3 2 3/27/2024 0.051 0.014 mg/m3 2 3/27/2024 .0061 0.0019 mg/m3 2 3/27/2024 ND 0.0041 mg/m3 2 3/27/2024 ND 0.016 mg/m3 2 3/27/2024 ND 0.0059 mg/m3 2 3/27/2024 ND 0.0019 mg/m3 2 3/27/2024 ND 0.0038 mg/m3 2 3/27/2024 ND 0.0028 mg/m3 2 3/27/2024 ND 0.0030 mg/m3 2 3/27/2024 ND 0.0024 mg/m3 2 3/27/2024 ND 0.0028 mg/m3 2 3/27/2024 ND 0.0052 mg/m3 2 3/27/2024 ND 0.0030 mg/m3 2 3/27/2024 ND 0.0026 mg/m' 2 3/27/2024 ND 0.0053 mg/m3 2 3/27/2024 ND 0.0022 mg/m3 2 3/27/2024 ND 0.021 mg/m3 2 3/27/2024 ND 0.0032 mg/m3 2 3/27/2024 ND 0.0026 mg/m3 2 3/27/2024 .0048 0.0026 mg/m3 2 3/27/2024 0.011 0.0041 mg/m3 2 3/27/2024 .0079 0.0023 mg/m3 2 3/27/2024 ND 0.0024 mg/m3 2 3/27/2024 ND 0.0028 mg/m3 2 3/27/2024 ND 0.0033 mg/m3 2 3/27/2024 ND 0.0034 mg/m3 2 3/27/2024 ND 0.021 mg/m3 2 3/27/2024 ND 0.0016 mg/m3 2 3/27/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 12 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lQ� lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -5 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:30:00 AM Lab ID: 24030412-005A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS TO -15 Prep Date: 3/22/2024 Analyst: KWV ORELAP IL300001 Xylenes, Total ND 0.0079 mg/m3 2 3/27/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 13 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -6 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:15:00 AM Lab ID: 24030412-006A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.041 mg/m3 25 3/26/2024 ND 0.041 mg/m3 25 3/26/2024 ND 0.030 mg/m3 25 3/26/2024 ND 0.030 mg/m3 25 3/26/2024 ND 0.055 mg/m3 25 3/26/2024 ND 0.057 mg/m3 25 3/26/2024 ND 0.045 mg/m3 25 3/26/2024 ND 0.030 mg/m3 25 3/26/2024 ND 0.034 mg/m3 25 3/26/2024 ND 0.045 mg/m3 25 3/26/2024 ND 0.067 mg/m3 25 3/26/2024 ND 0.055 mg/m3 25 3/26/2024 ND 0.18 mg/m3 25 3/26/2024 0.11 0.024 mg/m3 25 3/26/2024 ND 0.050 mg/m3 25 3/26/2024 ND 0.19 mg/m3 25 3/26/2024 ND 0.072 mg/m3 25 3/26/2024 ND 0.023 mg/m3 25 3/26/2024 ND 0.047 mg/m3 25 3/26/2024 ND 0.034 mg/m3 25 3/26/2024 ND 0.036 mg/m3 25 3/26/2024 ND 0.030 mg/m3 25 3/26/2024 ND 0.034 mg/m3 25 3/26/2024 ND 0.063 mg/m3 25 3/26/2024 ND 0.037 mg/m3 25 3/26/2024 ND 0.032 mg/m' 25 3/26/2024 ND 0.065 mg/m3 25 3/26/2024 ND 0.027 mg/m3 25 3/26/2024 ND 0.26 mg/m3 25 3/26/2024 ND 0.039 mg/m3 25 3/26/2024 ND 0.032 mg/m3 25 3/26/2024 ND 0.032 mg/m3 25 3/26/2024 ND 0.051 mg/m3 25 3/26/2024 0.029 0.028 mg/m3 25 3/26/2024 ND 0.030 mg/m3 25 3/26/2024 ND 0.034 mg/m3 25 3/26/2024 ND 0.040 mg/m3 25 3/26/2024 ND 0.042 mg/m3 25 3/26/2024 ND 0.26 mg/m3 25 3/26/2024 ND 0.019 mg/m3 25 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 14 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lQ� lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -6 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:15:00 AM Lab ID: 24030412-006A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS TO -15 Prep Date: 3/22/2024 Analyst: KWV ORELAP IL300001 Xylenes, Total ND 0.097 mg/m3 25 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 15 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lpt lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -7 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:05:00 AM Lab ID: 24030412-007A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS ORELAP IL300001 1,1,1 -Trichloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dibromoethane 1,2 -Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane 2-Butanone Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroform cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dichlorodifluoromethane Ethylbenzene m,p-Xylene Methyl tert-butyl ether Methylene chloride Naphthalene o -Xylene Styrene Tetrachloroethene Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl acetate Vinyl chloride TO -15 Prep Date: 3/22/2024 Analyst: KWV ND 0.039 mg/m3 25 3/26/2024 ND 0.039 mg/m3 25 3/26/2024 ND 0.029 mg/m3 25 3/26/2024 ND 0.028 mg/m3 25 3/26/2024 ND 0.052 mg/m3 25 3/26/2024 ND 0.054 mg/m3 25 3/26/2024 ND 0.042 mg/m3 25 3/26/2024 ND 0.029 mg/m3 25 3/26/2024 ND 0.033 mg/m3 25 3/26/2024 ND 0.042 mg/m3 25 3/26/2024 ND 0.064 mg/m3 25 3/26/2024 ND 0.052 mg/m3 25 3/26/2024 ND 0.17 mg/m3 25 3/26/2024 1.5 0.023 mg/m3 25 3/26/2024 ND 0.047 mg/m3 25 3/26/2024 ND 0.18 mg/m3 25 3/26/2024 ND 0.069 mg/m3 25 3/26/2024 ND 0.022 mg/m3 25 3/26/2024 ND 0.044 mg/m3 25 3/26/2024 ND 0.033 mg/m3 25 3/26/2024 ND 0.035 mg/m3 25 3/26/2024 ND 0.028 mg/m3 25 3/26/2024 ND 0.032 mg/m3 25 3/26/2024 ND 0.060 mg/m3 25 3/26/2024 ND 0.035 mg/m3 25 3/26/2024 ND 0.031 mg/m' 25 3/26/2024 0.33 0.061 mg/m3 25 3/26/2024 ND 0.025 mg/m3 25 3/26/2024 ND 0.25 mg/m3 25 3/26/2024 ND 0.037 mg/m3 25 3/26/2024 0.058 0.031 mg/m3 25 3/26/2024 ND 0.030 mg/m3 25 3/26/2024 ND 0.048 mg/m3 25 3/26/2024 ND 0.027 mg/m3 25 3/26/2024 ND 0.028 mg/m3 25 3/26/2024 ND 0.032 mg/m3 25 3/26/2024 ND 0.038 mg/m3 25 3/26/2024 ND 0.040 mg/m3 25 3/26/2024 ND 0.25 mg/m3 25 3/26/2024 ND 0.018 mg/m3 25 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 16 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded "%w w labs 2242 West Harrison St., Suite 200, Chicago, 1L 60612-3766 ster�Vlll��lQ� lin TO: (312) 733-0551 Fax: (312) 733-2386 Info@TheSterlingLab.com Report Date: March 30, 2024 Analytical Results Print Date: March 30, 2024 Customer: True North Consultants, Inc. Customer Sample ID: SG -7 Work Order: 24030412 Revision 0 Tag Number: Project: T242906.3, Formula Auto, 310 W. Northwest High Collection Date: 3/20/2024 9:05:00 AM Lab ID: 24030412-007A Matrix: Air Analyses Result RL Qualifier Units DF Date Analyzed Volatile Organic Compounds in Air by GC/MS TO -15 Prep Date: 3/22/2024 Analyst: KWV ORELAP IL300001 Xylenes, Total 0.39 0.092 mg/m3 25 3/26/2024 ND - Not Detected at the Reporting Limit Qualifiers: J - Analyte detected below quantitation limits B - Analyte detected in the associated Method Blank HT - Sample received past holding time * - Non -accredited parameter Page 17 of 19 RL - Reporting / Quantitation Limit for the analysis S - Spike Recovery outside accepted recovery limits R - RPD outside accepted recovery limits E - Value above quantitation range H - Holding time exceeded Page 18 of 19 labs sterung Sample Receipt Checklist Customer: TRUE NORTH Date and Time Received: 3/21/2024 5:46:00 PM Work Order Number 24030412 Received by: JMH Checklist completed by: __..- '� Reviewed by: Signature Date Initials �� _ Date Matrix: Carrier name: STAT Analysis Shipping container/cooler in good condition? Yes No ❑ Not Present ❑ Custody seals intact on shipping container/cooler? Yes ❑ No ❑ Not Present DV Custody seals intact on sample bottles? Yes ❑ No ❑ Not Present V Chain of custody present? Yes W No ❑ Chain of custody signed when relinquished and received? Yes W No ❑ Chain of custody agrees with sample labels/containers? Yes ❑ No ❑ Samples in proper container/bottle? Yes 0 No ❑ Sample containers intact? Yes No ❑ Sufficient sample volume for indicated test? Yes No ❑ All samples received within holding time? Yes No ❑ Container or Temp Blank temperature in compliance? Yes No ❑ Temperature Ambient °C Water - VOA vials have zero headspace? No VOA vials submitted ® Yes ❑ No Water - Samples pH checked? Yes No [2 Checked by: Water - Samples properly preserved? Yes No Ed pH Adjusted? Any No response must be detailed in the comments section below. Comments: Customer ! Person contacted: Response: Date contacted: Page 19 of 19 Contacted by: is hereby granted to Sterling Labs 2242 West Harrison Street Chicago, IL 60612 NELAP ACCREDITED Accreditation Number #100445 According to the Illinois Administrative Code, Title 35, Subtitle A, Chapter II, Part 186, ACCREDITATION OF LABORATORIES FOR DRINKING WATER, WASTEWATER AND HAZARDOUS WASTES ANALYSIS, the State of Illinois formally recognizes that this laboratory is technically competent to perform the environmental analyses listed on the scope of accreditation detailed below. The laboratory agrees to perform all analyses listed on this scope of accreditation according to the Part 186 requirements and acknowledges that continued accreditation is dependent on successful ongoing compliance with the applicable requirements of Part 186. Please contact the Illinois EPA Environmental Laboratory Accreditation Program (IL ELAP) to verify the laboratory's scope of accreditation and accreditation status. Accreditation by the State of Illinois is not an endorsement or a guarantee of validity of the data generated by the laboratory. Primary Accrediting Authority: Illinois Millie Rose Supervisor Environmental Laboratory Accreditation Program Certificate No: 1004452023-11 Expiration Date: 9/30/2024 Issued On: 10/12/2023 Page 1 of 25 State of Illinois Environmental Protection Agency Awards the Certificate of Approval to: Sterling Labs 2242 West Harrison Street Chicago, IL 60612 The Illinois Environmental Laboratory Accreditation Program encourages all clients and data users to verify the most current scope of accreditation for Sterling Labs. Certificate No.: 1004452023-11 Primary AB Field of Testing /Matrix: CWA (Non Potable Water) Method EPA 1664A Rev: 1 Oil & Grease IL Method EPA 200.8 Rev: 5.4 Aluminum IL Antimony IL Arsenic IL Barium IL Beryllium IL Cadmium IL Chromium IL Cobalt IL Copper IL Iron IL Lead IL Manganese IL Molybdenum IL Nickel IL Selenium IL Silver IL Thallium IL Tin IL Vanadium IL Zinc IL Method EPA 245.1 Rev: 3 Mercury IL Method EPA 410.4 Rev: 2 Chemical oxygen demand IL Method EPA 420.4 Rev: 1 Total phenolics IL Method EPA 608 4,4' -DDD IL 4,4' -DDE IL 4,4' -DDT IL Aldrin IL alpha -BHC (alpha -Hexachlorocyclohexane) IL Aroclor-1016 (PCB -1016) IL Aroclor-1248 (PCB -1248) IL Aroclor-1254 (PCB -1254) IL Page 2 of 25 Certificate No.: 1004452023-11 Field of Testing /Matrix: CWA (Non Potable Water) Aroclor-1260 (PCB -1260) beta -BHC (beta -Hexachlorocyclohexane) Chlordane (tech.)(N.O.S.) delta -BHC Dieldrin Endosulfan I Endosulfan II Endosulfan sulfate Endrin Endrin aldehyde gamma -BHC (Lindane, gamma -Hexachlorocyclohexane) Heptachlor Heptachlor epoxide Methoxychlor Toxaphene (Chlorinated camphene) Method EPA 624 1,1,1 -Trichloroethane 1,1,2,2 -Tetrachloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethylene 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Dichloroethane (Ethylene dichloride) 1,2-Dichloropropane 1,3 -Dichlorobenzene 1,4 -Dichlorobenzene 2-Chloroethyl vinyl ether Acrolein (Propenal) Acrylonitrile Benzene Bromodichlorom ethane Bromoform Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane (Ethyl chloride) Chloroform cis-1,3-Dichloropropene Ethylbenzene Methyl bromide (Bromomethane) Methyl chloride (Chloromethane) Methyl tert-butyl ether (MTBE) Methylene chloride (Dichloromethane) Tetrachloroethylene (Perch loroethylene) Toluene trans-1,2-Dichloroethylene trans-1,3-Dichloropropylene Trichloroethene (Trichloroethylene) Trichlorofluoromethane (Fluorotrichloromethane, Freon 11) Vinyl chloride Xylene (total) Page 3 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: CWA (Non Potable Water) Method EPA 625 1,2,4-Trichlorobenzene 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,3 -Dichlorobenzene 1,4 -Dichlorobenzene 2,2'-Oxybis(1-chloropropane), bis(2-Chloro-1-methylethyl)ether 2,4,5 -Trichlorophenol 2,4,6 -Trichlorophenol 2,4-Dichlorophenol 2,4 -Dimethylphenol 2,4-Dinitrophenol 2,4-Dinitrotoluene (2,4-DNT) 2,6-Dinitrotoluene (2,6-DNT) 2-Chloronaphthalene 2 -Chlorophenol 2-Methyl-4,6-dinitrophenol (4,6-Dinitro-2-methyl phenol) 2-Nitrophenol 3,3'-Dichlorobenzidine 4-Bromophenyl phenyl ether 4-Chloro-3-methylphenol 4-Chlorophenyl phenylether 4-Nitrophenol Acenaphthene Acenaphthylene Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene bis(2-Chloroethoxy)methane bis(2-Chloroethyl) ether bis(2- Ethyl hexyl) phthalate (DEHP) Butyl benzyl phthalate Chrysene Dibenz(a,h) anthracene Diethyl phthalate Dimethyl phthalate Di -n -butyl phthalate Di-n-octyl phthalate Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno(1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene n-Nitrosodimethylamine n-Nitrosodi-n-propylamine Page 4 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: CWA (Non Potable Water) n-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Method SM 2310 B-1997 Acidity, as CaCO3 Method SM 2320 B-1997 Alkalinity as CaCO3 Method SM 2540 B Rev: 20th ED Residue -total Method SM 2540 C-1997 Residue -filterable (TDS) Method SM 2540 D-1997 Residue-nonfilterable (TSS) Method SM 2540 E-1997 Residue -volatile Method SM 2540 F-1997 Residue -settleable Method SM 3500 -Cr B-2009 Chromium VI Method SM 4500 -CI G-2000 Total residual chlorine Method SM 4500 -CN E-1999 Cyanide Method SM 4500-H+ B-2000 pH Method SM 4500-NH3 G-1997 Ammonia Method SM 4500-NO3 F-2000 Nitrate Nitrate as N Nitrate plus Nitrite as N Method SM 4500-P E-1999 Orthophosphate as P Phosphorus Method SM 5210 B-2001 Biochemical oxygen demand Page 5 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: CWA (Solid & Hazardous Material) Method EPA 1664A Rev: 1 Oil & Grease Method EPA 200.8 Rev: 5.4 Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead Manganese Molybdenum Nickel Selenium Silver Thallium Tin Vanadium Zinc Method EPA 245.1 Rev: 3 Mercury Method EPA 410.4 Rev: 2 Chemical oxygen demand Method EPA 420.4 Rev: 1 Total phenolics Method SM 3500 -Cr B-2009 Chromium VI Method SM 4500-NO3 F-2000 Nitrate Method SM 5210 B-2001 Biochemical oxygen demand Carbonaceous BOD, CBOD Page 6 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) Method EPA 1311 Rev: 0 Toxicity Characteristic Leaching Procedure (TCLP) Method EPA 1312 Rev: 0 Synthetic Precipitation Leaching Procedure (SPLP) Method EPA 6020A Rev: 1 Aluminum Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper I ro n Lead Magnesium Manganese Molybdenum Nickel Potassium Selenium Silver Sodium Thallium Vanadium Zinc Method EPA 7000B Lead Method EPA 7196A Rev: 1 Chromium VI Method EPA 7470A Rev: 1 Mercury Method EPA 8015B Rev: 2 Diesel range organics (DRO) Ethylene glycol Gasoline range organics (GRO) Method EPA 8015C Diesel range organics (DRO) Gasoline range organics (GRO) Method EPA 8081A Rev: 1 4,4' -DDD 4,4' -DDE 4,4' -DDT Aldrin alpha -BHC (alpha -Hexachlorocyclohexane) alpha -Chlordane, cis -Chlordane beta -BHC (beta -Hexachlorocyclohexane) Chlordane (tech.)(N.O.S.) delta -BHC Page 7 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) Dieldrin Endosulfan I Endosulfan 11 Endosulfan sulfate Endrin Endrin aldehyde Endrin ketone gamma -BHC (Lindane, gamma -Hexachlorocyclohexane) gamma -Chlordane Heptachlor Heptachlor epoxide Methoxychlor Toxaphene (Chlorinated camphene) Method EPA 8081 B Rev: 2 4,4' -DDD 4,4' -DDE 4,4' -DDT Aldrin alpha -BHC (alpha -Hexachlorocyclohexane) alpha -Chlordane, cis -Chlordane beta -BHC (beta -Hexachlorocyclohexane) Chlordane (tech.)(N.O.S.) delta -BHC Dieldrin Endosulfan I Endosulfan 11 Endosulfan sulfate Endrin Endrin aldehyde Endrin ketone gamma -BHC (Lindane, gamma -Hexachlorocyclohexane) gamma -Chlordane Heptachlor Heptachlor epoxide Methoxychlor Toxaphene (Chlorinated camphene) Method EPA 8082 Rev: 0 Aroclor-1016 (PCB -1016) Aroclor-1248 (PCB -1248) Aroclor-1254 (PCB -1254) Aroclor-1260 (PCB -1260) Method EPA 8082A Aroclor-1016 (PCB -1016) Aroclor-1248 (PCB -1248) Aroclor-1254 (PCB -1254) Aroclor-1260 (PCB -1260) Method EPA 8260B 1,1,1,2 -Tetrachloroethane 1,1,1 -Trichloroethane 1,1,2,2 -Tetrachloroethane 1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) Page 8 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethylene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane (DBCP) 1,2-Dibromoethane (EDB, Ethylene dibromide) 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Dichloroethane (Ethylene dichloride) 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3 -Dichlorobenzene 1,3-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane (1,4- Diethyleneoxide) 2,2-Dichloropropane 2-Butanone (Methyl ethyl ketone, MEK) 2-Chloroethyl vinyl ether 2-Chlorotoluene 2-Hexanone 2-Nitropropane 4-Chlorotoluene 4-Isopropyltoluene (p-Cymene,p-Isopropyltoluene) 4-Methyl-2-pentanone (MIBK) Acetone Acrolein (Propenal) Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichlorom ethane Bromoform Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane (Ethyl chloride) Chloroform cis-1,2-Dichloroethylene cis-1,3-Dichloropropene Dibromomethane (Methylene bromide) Dichlorodifluoromethane (Freon -12) Diethyl ether Ethyl acetate Ethylbenzene Hexachlorobutadiene Iodomethane (Methyl iodide) Isobutyl alcohol (2 -Methyl -1 -propanol) Isopropyl alcohol (2 -Propanol, Isopropanol) Page 9 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) Isopropyl benzene m+p-xylene Methyl bromide (Bromomethane) Methyl chloride (Chloromethane) Methyl tert-butyl ether (MTBE) Methylene chloride (Dichloromethane) m -Xylene Naphthalene n -Butyl alcohol (1 -Butanol, n -Butanol) n-Butylbenzene o -Xylene p -Xylene sec -Butyl benzene Styrene tert- Butyl benzene Tetrachloroethylene (Perchloroethylene) Tetrahydrofuran (THF) Toluene trans-1,2-Dichloroethylene trans-1,3-Dichloropropylene Trichloroethene (Trichloroethylene) Trichlorofluoromethane (Fl uorotrichIoromethane, Freon 11) Vinyl acetate Vinyl chloride Xylene (total) Method EPA 8260C 1,1,1,2 -Tetrachloroethane 1,1,1 -Trichloroethane 1,1,2,2 -Tetrachloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethylene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane (DBCP) 1,2-Dibromoethane (EDB, Ethylene dibromide) 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Dichloroethane (Ethylene dichloride) 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichloro-2-propanol 1,3 -Dichlorobenzene 1,3-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane (1,4- Diethyleneoxide) 2,2-Dichloropropane 2-Butanone (Methyl ethyl ketone, MEK) 2-Chloroethyl vinyl ether 2-Chlorotoluene Page 10 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) 2-Hexanone 2-Nitropropane 4-Chlorotoluene 4-Isopropyltoluene (p-Cymene,p-Isopropyltoluene) 4-Methyl-2-pentanone (MIBK) Acetone Acrolein (Propenal) Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichlorom ethane Bromoform Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane (Ethyl chloride) Chloroform cis-1,2-Dichloroethylene cis-1,3-Dichloropropene Dibromomethane (Methylene bromide) Dichlorodifluoromethane (Freon -12) Diethyl ether Ethyl acetate Ethylbenzene Hexachlorobutadiene Iodomethane (Methyl iodide) Isobutyl alcohol (2 -Methyl -1 -propanol) Isopropyl alcohol (2 -Propanol, Isopropanol) Isopropyl benzene m+p-xylene Methyl bromide (Bromomethane) Methyl chloride (Chloromethane) Methyl tert-butyl ether (MTBE) Methylene chloride (Dichloromethane) m -Xylene Naphthalene n -Butyl alcohol (1 -Butanol, n -Butanol) n-Butylbenzene o -Xylene p -Xylene sec -Butyl benzene Styrene tert- Butyl benzene Tetrachloroethylene (Perch loroethylene) Toluene trans-1,2-Dichloroethylene trans-1,3-Dichloropropylene Trichloroethene (Trichloroethylene) Trichlorofluoromethane (Fluorotrichloromethane, Freon 11) Vinyl acetate Page 11 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) Vinyl chloride Xylene (total) Method EPA 8270C Rev: 3 1,2,4-Trichlorobenzene 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Diphenylhydrazine 1,3 -Dichlorobenzene 1,4 -Dichlorobenzene 1,4-Dinitrobenzene 1 -Methylnaphthalene 2,4,5 -Trichlorophenol 2,4,6 -Trichlorophenol 2,4-Dichlorophenol 2,4 -Dimethylphenol 2,4-Dinitrophenol 2,4-Dinitrotoluene (2,4-DNT) 2,6-Dinitrotoluene (2,6-DNT) 2-Chloronaphthalene 2 -Chlorophenol 2-Methyl-4,6-dinitrophenol (4,6-Dinitro-2-methyl phenol) 2 -Methylnaphthalene 2-Methylphenol (o -Cresol) 2-Nitroaniline 2-Nitrophenol 3,3'-Dichlorobenzidine 3-Methylphenol (m -Cresol) 3-Nitroaniline 4-Bromophenyl phenyl ether 4-Chloro-3-methylphenol 4-Chloroaniline 4-Chlorophenyl phenylether 4-Methylphenol (p -Cresol) 4-Nitroaniline 4-Nitrophenol Acenaphthene Acenaphthylene Aniline Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzoic acid Benzyl alcohol bis(2-Chloroethoxy)methane bis(2-Chloroethyl) ether bis(2- Ethyl hexyl) phthalate (DEHP) Butyl benzyl phthalate Carbazole Chrysene Dibenz(a,h) anthracene Page 12 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) Dibenzofuran Diethyl phthalate Dimethyl phthalate Di -n -butyl phthalate Di-n-octyl phthalate Diphenylamine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno(1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene n-Nitrosodimethylamine n-Nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Pyridine Method EPA 8270D 1,2,4-Trichlorobenzene 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Diphenylhydrazine 1,3 -Dichlorobenzene 1,4 -Dichlorobenzene 1,4-Dinitrobenzene 1 -Methylnaphthalene 2,4,5 -Trichlorophenol 2,4,6 -Trichlorophenol 2,4-Dichlorophenol 2,4 -Dimethylphenol 2,4-Dinitrophenol 2,4-Dinitrotoluene (2,4-DNT) 2,6-Dinitrotoluene (2,6-DNT) 2-Chloronaphthalene 2 -Chlorophenol 2-Methyl-4,6-dinitrophenol (4,6-Dinitro-2-methyl phenol) 2 -Methylnaphthalene 2-Methylphenol (o -Cresol) 2-Nitroaniline 2-Nitrophenol 3,3'-Dichlorobenzidine 3-Methylphenol (m -Cresol) 3-Nitroaniline 4-Bromophenyl phenyl ether 4-Chloro-3-methylphenol 4-Chloroaniline Page 13 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) 4-Chlorophenyl phenylether 4-Methylphenol (p -Cresol) 4-Nitroaniline 4-Nitrophenol Acenaphthene Acenaphthylene Aniline Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzoic acid Benzyl alcohol bis(2-Chloroethoxy)methane bis(2-Chloroethyl) ether bis(2- Ethyl hexyl) phthalate (DEHP) Butyl benzyl phthalate Carbazole Chrysene Dibenz(a,h) anthracene Dibenzofuran Diethyl phthalate Dimethyl phthalate Di -n -butyl phthalate Di-n-octyl phthalate Diphenylamine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno(1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene n-Nitrosodimethylamine n-Nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Pyridine Method EPA 8321 B 2,4,5-T 2,4-D 2,4 -DB Dalapon Dicamba Page 14 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Non Potable Water) Dichloroprop (Dichlorprop) Dinoseb (2-sec-butyl-4,6-dinitrophenol, DNBP) MCPA MCPP Silvex (2,4,5 -TP) Method EPA 9012A Rev: 1 Cyanide Method EPA 9012B Cyanide Method EPA 9040B Rev: 2 pH Method EPA 9040C pH Method EPA 9066 Rev: 0 Total phenolics Method EPA 9095A Paint Filter Test Method EPA 9095B Paint Filter Test Page 15 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) Method EPA 1010A Ignitability Method EPA 1311 Rev: 0 Toxicity Characteristic Leaching Procedure (TCLP) Method EPA 1312 Rev: 0 Synthetic Precipitation Leaching Procedure (SPLP) Method EPA 6020A Rev: 1 Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Manganese Molybdenum Nickel Potassium Selenium Silver Sodium Thallium Vanadium Zinc Method EPA 7000B Lead Method EPA 7196A Rev: 1 Chromium VI Method EPA 7471 B Mercury Method EPA 8015B Rev: 2 Diesel range organics (DRO) Ethylene glycol Gasoline range organics (GRO) Method EPA 8015C Diesel range organics (DRO) Gasoline range organics (GRO) Method EPA 8081A Rev: 1 4,4' -DDD 4,4' -DDE 4,4' -DDT Aldrin Page 16 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) alpha -BHC (alpha -Hexachlorocyclohexane) alpha -Chlordane, cis -Chlordane beta -BHC (beta -Hexachlorocyclohexane) Chlordane (tech.)(N.O.S.) delta -BHC Dieldrin Endosulfan I Endosulfan 11 Endosulfan sulfate Endrin Endrin aldehyde Endrin ketone gamma -BHC (Lindane, gamma -Hexachlorocyclohexane) gamma -Chlordane Heptachlor Heptachlor epoxide Methoxychlor Toxaphene (Chlorinated camphene) Method EPA 8081 B Rev: 2 4,4' -DDD 4,4' -DDE 4,4' -DDT Aldrin alpha -BHC (alpha -Hexachlorocyclohexane) alpha -Chlordane, cis -Chlordane beta -BHC (beta -Hexachlorocyclohexane) Chlordane (tech.)(N.O.S.) delta -BHC Dieldrin Endosulfan I Endosulfan 11 Endosulfan sulfate Endrin Endrin aldehyde Endrin ketone gamma -BHC (Lindane, gamma -Hexachlorocyclohexane) gamma -Chlordane Heptachlor Heptachlor epoxide Methoxychlor Toxaphene (Chlorinated camphene) Method EPA 8082 Rev: 0 Aroclor-1016 (PCB -1016) Aroclor-1221 (PCB -1221) Aroclor-1232 (PCB -1232) Aroclor-1242 (PCB -1242) Aroclor-1248 (PCB -1248) Aroclor-1254 (PCB -1254) Aroclor-1260 (PCB -1260) Method EPA 8082A Aroclor-1016 (PCB -1016) Page 17 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) Aroclor-1221 (PCB -1221) Aroclor-1232 (PCB -1232) Aroclor-1242 (PCB -1242) Aroclor-1248 (PCB -1248) Aroclor-1254 (PCB -1254) Aroclor-1260 (PCB -1260) Method EPA 82608 1,1,1,2 -Tetrachloroethane 1,1,1 -Trichloroethane 1,1,2,2 -Tetrachloroethane 1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethylene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane (DBCP) 1,2-Dibromoethane (EDB, Ethylene dibromide) 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Dichloroethane (Ethylene dichloride) 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3 -Dichlorobenzene 1,3-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane (1,4- Diethyleneoxide) 2,2-Dichloropropane 2-Butanone (Methyl ethyl ketone, MEK) 2-Chloroethyl vinyl ether 2-Chlorotoluene 2-Hexanone 2-Nitropropane 4-Chlorotoluene 4-Isopropyltoluene (p-Cymene,p-Isopropyltoluene) 4-Methyl-2-pentanone (MIBK) Acetone Acrolein (Propenal) Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichlorom ethane Bromoform Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane (Ethyl chloride) Chloroform Page 18 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) cis-1,2-Dichloroethylene cis-1,3-Dichloropropene Dibromomethane (Methylene bromide) Dichlorodifluoromethane (Freon -12) Diethyl ether Ethyl acetate Ethylbenzene Hexachlorobutadiene lodomethane (Methyl iodide) Isobutyl alcohol (2 -Methyl -1 -propanol) Isopropyl alcohol (2 -Propanol, Isopropanol) Isopropyl benzene m+p-xylene Methyl bromide (Bromomethane) Methyl chloride (Chloromethane) Methyl tert-butyl ether (MTBE) Methylene chloride (Dichloromethane) m -Xylene Naphthalene n -Butyl alcohol (1 -Butanol, n -Butanol) n-Butylbenzene o -Xylene p -Xylene sec -Butyl benzene Styrene tert- Butyl benzene Tetrachloroethylene (Perch loroethylene) Tetrahydrofuran (THF) Toluene trans-1,2-Dichloroethylene trans-1,3-Dichloropropylene Trichloroethene (Trichloroethylene) Trichlorofluoromethane (Fluorotrichloromethane, Freon 11) Vinyl acetate Vinyl chloride Xylene (total) Method EPA 8260C 1,1,1,2 -Tetrachloroethane 1,1,1 -Trichloroethane 1,1,2,2 -Tetrachloroethane 1,1,2 -Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethylene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromo-3-chloropropane (DBCP) 1,2-Dibromoethane (EDB, Ethylene dibromide) 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Dichloroethane (Ethylene dichloride) Page 19 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) 1,2-Dichloropropane 1,3,5-Trimethylbenzene 1,3-Dichloro-2-propanol 1,3 -Dichlorobenzene 1,3-Dichloropropane 1,4 -Dichlorobenzene 1,4 -Dioxane (1,4- Diethyleneoxide) 2,2-Dichloropropane 2-Butanone (Methyl ethyl ketone, MEK) 2-Chloroethyl vinyl ether 2-Chlorotoluene 2-Hexanone 2-Nitropropane 4-Chlorotoluene 4-Isopropyltoluene (p-Cymene,p-Isopropyltoluene) 4-Methyl-2-pentanone (MIBK) Acetone Acrolein (Propenal) Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichlorom ethane Bromoform Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane (Ethyl chloride) Chloroform cis-1,2-Dichloroethylene cis-1,3-Dichloropropene Dibromomethane (Methylene bromide) Dichlorodifluoromethane (Freon -12) Diethyl ether Ethyl acetate Ethylbenzene Hexachlorobutadiene Iodomethane (Methyl iodide) Isobutyl alcohol (2 -Methyl -1 -propanol) Isopropyl alcohol (2 -Propanol, Isopropanol) Isopropyl benzene m+p-xylene Methyl bromide (Bromomethane) Methyl chloride (Chloromethane) Methyl tert-butyl ether (MTBE) Methylene chloride (Dichloromethane) m -Xylene Naphthalene n -Butyl alcohol (1 -Butanol, n -Butanol) n-Butylbenzene o -Xylene Page 20 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) p -Xylene sec -Butyl benzene Styrene tert- Butyl benzene Tetrachloroethylene (Perch loroethylene) Toluene trans-1,2-Dichloroethylene trans-1,3-Dichloropropylene Trichloroethene (Trichloroethylene) Trichlorofluoromethane (Fl uorotrichIoromethane, Freon 11) Vinyl acetate Vinyl chloride Xylene (total) Method EPA 8270C Rev: 3 1,2,4-Trichlorobenzene 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Diphenylhydrazine 1,3 -Dichlorobenzene 1,4 -Dichlorobenzene 1,4-Dinitrobenzene 1 -Methylnaphthalene 2,4,5 -Trichlorophenol 2,4,6 -Trichlorophenol 2,4-Dichlorophenol 2,4 -Dimethylphenol 2,4-Dinitrophenol 2,4-Dinitrotoluene (2,4-DNT) 2,6-Dinitrotoluene (2,6-DNT) 2-Chloronaphthalene 2 -Chlorophenol 2-Methyl-4,6-dinitrophenol (4,6-Dinitro-2-methyl phenol) 2 -Methylnaphthalene 2-Methylphenol (o -Cresol) 2-Nitroaniline 2-Nitrophenol 3,3'-Dichlorobenzidine 3-Methylphenol (m -Cresol) 3-Nitroaniline 4-Bromophenyl phenyl ether 4-Chloro-3-methylphenol 4-Chloroaniline 4-Chlorophenyl phenylether 4-Methylphenol (p -Cresol) 4-Nitroaniline 4-Nitrophenol Acenaphthene Acenaphthylene Aniline Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene Page 21 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol bis(2-Chloroethoxy)methane bis(2-Chloroethyl) ether bis(2- Ethyl hexyl) phthalate (DEHP) Butyl benzyl phthalate Carbazole Chrysene Dibenz(a,h) anthracene Dibenzofuran Diethyl phthalate Dimethyl phthalate Di -n -butyl phthalate Di-n-octyl phthalate Diphenylamine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno(1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene n-Nitrosodimethylamine n-Nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Pyridine Method EPA 8270D 1,2,4-Trichlorobenzene 1,2 -Dichlorobenzene (o -Dichlorobenzene) 1,2-Diphenylhydrazine 1,3 -Dichlorobenzene 1,4 -Dichlorobenzene 1,4-Dinitrobenzene 1 -Methylnaphthalene 2,4,5 -Trichlorophenol 2,4,6 -Trichlorophenol 2,4-Dichlorophenol 2,4 -Dimethylphenol 2,4-Dinitrophenol 2,4-Dinitrotoluene (2,4-DNT) 2,6-Dinitrotoluene (2,6-DNT) 2-Chloronaphthalene Page 22 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) 2 -Chlorophenol 2-Methyl-4,6-dinitrophenol (4,6-Dinitro-2-m ethyl phenol) 2 -Methylnaphthalene 2-Methylphenol (o -Cresol) 2-Nitroaniline 2-Nitrophenol 3,3'-Dichlorobenzidine 3-Methylphenol (m -Cresol) 3-Nitroaniline 4-Bromophenyl phenyl ether 4-Chloro-3-methylphenol 4-Chloroaniline 4-Chlorophenyl phenylether 4-Methylphenol (p -Cresol) 4-Nitroaniline 4-Nitrophenol Acenaphthene Acenaphthylene Aniline Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol bis(2-Chloroethoxy)methane bis(2-Chloroethyl) ether bis(2- Ethyl hexyl) phthalate (DEHP) Butyl benzyl phthalate Carbazole Chrysene Dibenz(a,h) anthracene Dibenzofuran Diethyl phthalate Dimethyl phthalate Di -n -butyl phthalate Di-n-octyl phthalate Diphenylamine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno(1,2,3-cd) pyrene Isophorone Naphthalene Nitrobenzene n-Nitrosodimethylamine Page 23 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: RCRA (Solid & Hazardous Material) n-Nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Pyridine Method EPA 8321 B 2,4,5-T 2,4-D 2,4 -DB Dalapon Dicamba Dichloroprop (Dichlorprop) Dinoseb (2-sec-butyl-4,6-dinitrophenol, DNBP) MCPA MCPP Silvex (2,4,5 -TP) Method EPA 9012A Rev: 1 Cyanide Method EPA 9012B Cyanide Method EPA 9045C Rev: 3 pH Method EPA 9045D pH Method EPA 9066 Rev: 0 Total phenolics Method EPA 9095A Paint Filter Test Method EPA 9095B Paint Filter Test Page 24 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL Certificate No.: 1004452023-11 Field of Testing /Matrix: SDWA (Potable Water) Method EPA 200.8 Rev: 5.4 Aluminum Antimony Arsenic Barium Beryllium Cadmium Chromium Copper Lead Manganese Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc End of Scope of Accreditation Page 25 of 25 Primary AB IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT APPENDIX Photograph Log LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT FORMULA AUTO REPAIR PROPERTY 310 W. NORTHWEST HIGHWAY, MOUNT PROSPECT, ILLINOIS #I: View of the location of SG -7 with utility clearance. #3: View of EnviroDynamics advancing soil gas boring SG -7. #5: View of temporary well installed at SB-I/TW-I. CONSULTANTS #2: View of Ground Penetrating Radar (GPR) scanning performed by SRS. #4: View of geoprobe advancing soil gas boring SG -4. 46: View of location of SG -4 prior to collecting sample. PROJECT NUMBER: T242906.3 DATE: MARCH 2023 LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT FORMULA AUTO REPAIR PROPERTY 310 W. NORTHWEST HIGHWAY, MOUNT PROSPECT, ILLINOIS #7: View of groundwater sampling at TW -3. #9: View of SB -5 backfilled with bentonite and concrete to grade. CON S U L T A N T S #8: View of soil gas collection at SG -2. #10: View of SG -6 backfilled with bentonite and asphalt patching to grade. PROJECT NUMBER: T242906.3 DATE: MARCH 2023