EnviroLogic Resources, Inc. E N V I R O N M E N T A L W A T E R R E S O U R C E S S C I E N T I S T S

Transcription

1 , Inc. E N V I R O N M E N T A L W A T E R R E S O U R C E S S C I E N T I S T S July 25, Oregon Department of Environmental Quality Western Region Environmental Cleanup Program 4026 Fairview Industrial Drive Salem, Oregon Attention: Nancy Sawka Senior Project Manager via /First Class SUBJECT: Quarterly Monitoring Event 1st Quarter 2016 Former Mid-Valley Motors th Street SE Salem, Oregon DEQ File # Dear Ms. Sawka: This report presents the results of first quarter 2016 (1Q16) groundwater monitoring activities conducted by, Inc., at the former Mid-Valley Motors service station site located in Salem, Oregon. The nine monitoring wells were placed to evaluate the extent of free product (if any) and magnitude of groundwater impacts, determine the groundwater flow direction, and establish the monitoring-well network for a quarterly groundwater sampling program. FIELD ACTIVITIES 1Q16 activities included sampling the nine project groundwater monitoring wells. The soil gas probes on-site were not scheduled to be sampled this quarter. Groundwater levels were measured on February 26, 2016, prior to sampling and generally occur at 10- to 14-feet below ground surface (bgs). The monitoring wells were sampled on February 29, The site location is shown on Figure 1, and the site vicinity is presented on Figure 2. Water-Levels The depth to water ranged between feet in monitoring well MW-1A to feet in MW-5 below the top of the well casings on February 26, The groundwater elevation ranged from feet above mean sea level in MW-5 to feet in well MW-1A, based on the City of Salem Benchmark No [elevation feet NGVD 27/47 PO Box Portland, Oregon Tel(503) Fax(503)

2 Ms. Nancy Sawka July 25, 2016 Page 2 (Parsons Surveying, 2012)]. Water-level measurements are presented in Table 1. The inferred direction of groundwater flow is generally northeast. Figure 3 shows the monitoring well locations. Groundwater elevations and a generalized flow direction during the 1Q16 event are shown on Figure 4. Groundwater Sampling Groundwater samples were collected from monitoring wells MW-1A, and MW-2 through MW-9, on February 29, The groundwater sampling was performed consistent with the Work Plan field sampling plan (, 2014, Appendix A) and our comments in response to DEQ review. Prior to sampling, approximately two gallons of groundwater were purged from each well using a low-flow peristaltic pump. During purging, field parameters consisting of groundwater ph, temperature, specific conductance, and oxidation/reduction potential (ORP) were measured and recorded at approximately 0.5-gallon intervals. Other observations included color, odor, and turbidity. A groundwater sample was then obtained from the well using a peristaltic pump after the field parameters and observations had stabilized to approximately within 10% or less variability between measurements. Water sample logs are included in Appendix A. The groundwater samples were collected into containers supplied by the laboratory, labeled, and packed in a cooler with ice. The samples were delivered to, of Tigard, Oregon, for analysis, along with chain-of-custody documentation. The nine groundwater samples were analyzed via Northwest Method NWTPH-Gx for gasoline-range hydrocarbons, NWTPH-Dx for diesel- and oil-range hydrocarbons, EPA Method 8260B for DEQ Risk-Based Decision-Making (RBDM) VOCs, EPA Method 8270D SIM for RBDM polynuclear aromatic hydrocarbons (PAHs), and EPA Method 6020 (200.8) for dissolved lead. Copies of the laboratory analytical results are included inappendix B along with chainof-custody information. Free Product Evaluation The presence of floating product was evaluated by using an interface probe, and a 1.5-inch (O.D.) polyethylene bailer, and then again in the bucket and bottles receiving the sampling discharge from the peristaltic pump. Although free product was suspected basedonthe observation in temporary wells reported in the October 2011 Phase 2 investigation, measurable free product was not observed on groundwater during this sampling event. However, petroleum hydrocarbon sheen was observed in monitoring well MW-7, as noted in Table 1.

3 Ms. Nancy Sawka July 25, 2016 Page 3 ANALYTICAL RESULTS The 1Q16 groundwater data set will be incorporated into a future Corrective Action Plan (CAP), and used to evaluate human health risk on the basis of the present and reasonably likely future land use. Groundwater Analytical Results The nine groundwater samples were submitted for analysis of gasoline-, diesel-, and oil-range petroleum hydrocarbons. Figure 5 shows the concentration of gasoline-, diesel-, and oilrange total petroleum hydrocarbons in groundwater. Gasoline-range hydrocarbons were detected in eight of the nine samples at concentrations ranging from 203 micrograms per liter (µg/l) to 9,810 µg/l. The results for gasoline-range hydrocarbons are included in Table 2. TPH-Dx results detected diesel-range hydrocarbons at 385 µg/l in one (MW-7) of the nine samples. The diesel-range TPH in the MW-7 sample was identified by the laboratory as overlap from gasoline or a gasoline-range product. Diesel-range TPH was not detected in the other eight samples. The NWTPH-Gx and NWTPH-Dx analytical results are presented in Table 2 in comparison to DEQ gasoline-, diesel-, and oil-range RBCs. Heavy oil-range hydrocarbons were not detected in any of the nine samples. Appendix A contains the groundwater sampling field forms, and Appendix B includes the groundwater sampling laboratory analytical reports. VOCs were detected in eight of the nine groundwater samples. No VOCs were detected in the MW-4 sample. Specific VOC analyte concentrations and RBC exceedances are presented in Table 3. Each of the nine samples was analyzed for PAHs. Naphthalene was detected in six of the nine samples, phenanthrene was also detected in one of these samples. Analytical results for PAHs are compared to RBCs and presented on Table 4. The magnitude of naphthalene concentrations were slightly higher via 8260B VOCs in a comparison of the naphthalene results by 8270D PAHs analyses (naphthalene is included in the lists of analytes for both lab methods). Detection limits are higher for 8260B VOCs. The nine water samples were also analyzed for dissolved lead. Dissolved lead was detected in four of the samples at concentrations ranging from µg/l to 7.27 µg/l. Laboratory analytical results for total metals and dissolved metals are included in Table 5. Dissolved-phase petroleum hydrocarbon constituents in groundwater identified during the

4 Ms. Nancy Sawka July 25, 2016 Page 4 1Q16 groundwater sampling event extend beyond the property line at the site. Ethylbenzene, naphthalene, and 1,2,4-trimethylbenzene remain key site groundwater indicator VOCs for comparison with RBCs. The extent and distribution of total petroleum hydrocarbons, and ethylbenzene, naphthalene, and 1,2,4-trimethylbenzene, in groundwater at the site during the 1Q16 event are presented on Figure 5 and Figure 6. A copy of the 1Q16 laboratory analytical results report for groundwater samples are contained in Appendix B. CONCLUSIONS Analytical results detected petroleum-related constituents in groundwater samples submitted for analysis during this phase of work. Dissolved-phase petroleum hydrocarbon constituents in groundwater detected during the first quarter 2016 (1Q16) groundwater sampling event extend beyond the property line at the site. It continues to appear that off-site impacts in the vicinity of monitoring wells MW-7 and MW-8 are not related to on-site releases. The concentrations of gasoline-range hydrocarbons and 1,2,4-trimethylbenzene in groundwater are typically higher in cross-gradient well MW-7 and upgradient well MW-8 than in the onsite wells. Additionally, toluene and total xylenes concentrations in MW-7 (cross-gradient) are higher than in any of the other wells. In conjunction with our understanding of the historical, present and potential allowed future uses of the site and surrounding area, the preliminary CSM for exposure, and the present hydrogeological conditions, a CAP will be developed and submitted to DEQ for review after conclusion of the ongoing quarterly Groundwater Monitoring Program. The CAP would contain an analysis of all the soil gas, soil, and groundwater sampling in comparison to the RBCs for the applicable potential exposure pathways/receptor scenario combinations. Depending on the complete dataset, the CAP will evaluate whether a cleanup remedy, additional investigations and monitoring, site controls for risk management, or combination of these are necessary in order to meet DEQ no further action criteria. CLOSING COMMENTS The purpose of this report is to document the activities and results associated with the quarterly monitoring event conducted by in February The information contained within this document was developed in accordance with currently available information and accepted geologic, hydrogeologic practices and guidance at this time for this site. Off-site petroleum hydrocarbon impacts to groundwater identified during this quarterly monitoring event appear to be below RBCs presently applicable to the presently allowable and reasonably foreseeable surrounding property uses. The site does not appear to present

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6 Ms. Nancy Sawka July 25, 2016 Page 6 References Cascade Earth Sciences, Ltd, 1990, 20 Day Report, McEwen s Car Wash, 1212 Mission SE, Salem, Oregon, consultant report dated (May) DEQ, 1998a, Guidance for Consideration of Land Use in Environmental Actions: guidance document dated July 1, DEQ, 1998b, Guidance for Conducting Beneficial Water Use Determinations at Environmental Cleanup Sites: guidance document dated July 1, DEQ, 2003, Risk-Based Decision Making for the Remediation of Petroleum Contaminated Sites: guidance document dated September 22, 2003 (revised November 15, 2011). DEQ, 2013, Background Levels of Metals in Soils for Cleanup: fact sheet dated March 20, 2013., Inc., 2012a, Phase 1 Environmental Site Investigation, th Street SE, Salem, Oregon, consultant report dated January 27, 2012., Inc., 2012b, Phase 2 Environmental Site Investigation, th Street SE, Salem, Oregon, consultant report dated January 27, 2012., Inc., 2012c, Work Plan for Additional Investigation, th Street SE, Salem, Oregon, consultant document dated June 20, 2012., Inc., 2012d, Well Installation & Groundwater Monitoring Report 2Q12, th Street SE, Salem, Oregon, consultant report dated September 12, 2012., Inc., 2014a, Well Installation, Soil Gas Sampling & Quarterly Monitoring Work Plan, th Street SE, Salem, Oregon, consultant document dated May 2, 2014., Inc., 2014b, Soil Gas Sampling, Well Installation & Groundwater Monitoring Report 4Q14, th Street SE, Salem, Oregon, consultant report dated June 15, 2015., Inc., 2016, Quarterly Monitoring Event 4 th Quarter 2015, Former Mid-Valley Motors, th Street SE, Salem, Oregon, consultant report dated April 13, 2016.

7 Ms. Nancy Sawka July 25, 2016 Page 7 FORMER MID-VALLEY MOTORS SITE Distribution List 1 Nancy Sawka, Oregon DEQ 1 David Glennie, Mission Development Group Agent 1 Tom Chambers, Mission Development Group, Member 1 Scott Jerger, Field Jerger LLP, Attorney Representing Grabenhorst Successor in Interest Mission Development Group 1 Gail Anderson, RiverStone Claims Management, LLC 1 Jerri L Hanks, Claims and Superfund Advisor, ExxonMobil 1 Ryan Pozzuto, Program Manager, CARDNO, Representing ExxonMobil 1 Mark Myers, Williams Kastner, Attorney Representing ExxonMobil 1 Gigi Zuo, Property Specialist, Chevron Corp 1 Laura Bernard, Senior Counsel, Chevron Corp. 1 Robert C. Goodman, Rogers Joseph O'Donnell, PC, Attorney Representing Chevron Corp 1 Nick Niiro, Rogers Joseph O'Donnell, PC, Attorney Representing Chevron Corp. 1 Tom Calabrese,, Inc., Project Environmental Consultant 1 Information Repository at

8 TABLES

9 TABLE 1 GROUNDWATER LEVEL MEASUREMENTS 795 Mission Street SE Salem, Oregon Top of Casing Depth to Groundwater Well ID Date Time Elevation Water Elevation Notes (feet MSL) (feet bgs) (feet MSL) MW-1* 7/6/ : Faint Sheen/Odor (abandoned) 8/10/ : Faint Sheen/Odor 2/25/ : Faint Odor MW-1A 10/16/2014 9: Odor 12/2/ : Odor 11/4/ : Faint Odor 2/26/ : Faint Odor MW-2 7/6/ : Odor 8/10/ : Odor 2/25/ : Odor 10/16/2014 9: Odor 12/2/ : /4/ : Faint Odor 2/26/ : Faint Odor MW-3 7/6/ : Odor 8/10/ : /25/ : /16/2014 9: Odor 12/2/ : /4/ : Odor 2/26/ : Monitoring Wells MW-4 7/6/ : Faint Odor 8/10/ : /25/ : /16/2014 8: /2/ : /4/ : /26/ : MW-5 10/16/2014 9: /2/ : Truck Parked Over 11/4/ : Faint Odor 2/26/ : Faint Odor MW-6 10/16/2014 9: Odor 12/2/ : Odor 11/4/ : Odor 2/26/ : Odor MW-7 10/16/2014 9: Sheen/Odor 12/2/ : Sheen/Odor 11/4/ : Sheen/Odor 2/26/ : Faint Sheen/Odor MW-8 10/16/ : Sheen/Odor 12/2/ : Sheen/Odor 11/4/ : Odor 2/26/ : Odor MW-9 10/16/ : Sheen/Odor 12/2/ : Sheen/Odor 11/4/ : Faint Odor 2/26/ : Odor Notes: 1 = 8/10/12 measurement during well elevation survey * = monitoring well MW-1 abandoned, replaced by MW-1A

10 TABLE 2 GROUNDWATER ANALYTICAL RESULTS Total Petroleum Hydrocarbons th Street SE Salem, OR Gasoline Range Organics 1 Diesel Range Organics 2 Oil Range Organics 2 Sample ID Depth to Water Date Sampled (feet) µg/l µg/l µg/l SB2/TW /13/2011 NA NA NA Phase 2 ESA Temporary Wells SB4/TW /13/2011 NA NA NA SB5/TW /13/2011 NA NA NA SB7/TW /13/2011 NA NA NA SB9/TW /13/2011 NA NA NA MW-1* /6/2012 5,860 * 920 * 374 U* MW-1A /16/ , U /5/ U 377 U /29/2016 2, U 381 U MW /6/2012 2, U /16/2014 1, U 377 U /5/ U 377 U /29/ U 381 U MW /6/ U 404 U /16/2014 2, U 377 U /4/2015 5, U 377 U /29/ U 381 U Monitoring Wells MW /6/ U 187 U 374 U /16/ U 377 U /4/ U 189 U 377 U /29/ U 190 U 381 U MW /16/ U 377 U /5/ U 377 U /29/2016 2, U 381 U MW /16/2014 7, U /5/2015 2, U 377 U /29/2016 2, U 381 U MW /16/ , U /5/ , U /29/2016 7, U MW /16/2014 8, U /5/2015 2, U 377 U /29/2016 2, U 381 U MW /16/ , U /5/ U 377 U /29/2016 9, U 381 U Tapwater Ingestion & Inhalation Urban Residential RBC tw (µg/l) Occupational RBC tw (µg/l) DEQ Generic RBCs , Groundwater Volatilization to Outdoor Air Urban Residential RBC wo (µg/l) Urban Residential RBC wo (µg/l) >S >S >S >S >S >S Groundwater in Excavation Construction & Excavation Worker RBC we (µg/l) 14,000 >S >S Groundwater Vapor Intrusion into Buildings Urban Residential RBC wi (µg/l) Occupational RBC wi (µg/l) 79,000 21,000 30,000 1,700, , ,000 Notes: 1 = Gasoline range hydrocarbons (benzene to naphthalene) via Method NWTPH-Gx 2 = Diesel range (C10-C22) and oil range (>C22-C40) hydrocarbons via Method NWTPH-Dx U = not detected at the method detection limit NA = not analyzed >S = Per DEQ guidance (2009), the groundwater RBC is greater than the solubility limit for this constituent. * = monitoring well MW-1 abandoned, replaced by MW-1A July 2012 RBCs in effect at project outset

11 TABLE 3 GROUNDWATER ANAYTICAL RESULTS Volatile Organic Compounds th Street SE Salem, OR Sample ID Depth to Water Date Sampled Benzene 1 Toluene 1 Ethylbenzene 1 Xylenes, total 1 Naphthalene 1 Methyl tertbutyl ether 1 Isopropylbenzene 1 n-propylbenzene 1 1,2,4-Trimethylbenzene 1 1,3,5-Trimethylbenzene 1 1,2-Dibromoethane 1 1,2-Dichloroethane 1 (feet) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) SB2/TW /13/ U U 5.00 U Phase 2 ESA Temporary Wells SB4/TW /13/ U 1,220 U U U 2.50 U SB5/TW /13/ ,200 3,870 22, U ,660 1, U 50.0 U SB7/TW /13/ U 263 3,420 7, U , U 50.0 U SB9/TW /13/ U 500 U 11,100 32,650 1, U 2,050 7,670 34,500 10, U 250 U MW-1* /6/ * 191 * 128 * 855 * 58.7 * 1.00 U* 28.3 * 80.7 * 130 * 56.6 * U* U* MW-1A /16/ U , U U 1.00 U /5/ U 1.00 U U 1.00 U 1.00 U U U U /29/ U U U U MW /6/ U U U /16/ U 2.00 U U 2.00 U 1.00 U 1.00 U /5/ U 2.00 U 1.00 U U 1.00 U U U /29/ U U 1.50 U 2.00 U 1.00 U 1.00 U U 1.00 U 1.00 U U U MW /6/ U U U U /16/ U 2.00 U U U 1.00 U /4/ U 2.00 U U 1.00 U /29/ U U 1.00 U U 1.00 U U U Monitoring Wells MW /06/ U 1.00 U U U 2.00 U 1.00 U 1.00 U U 1.00 U 1.00 U U U /16/ U 1.00 U U 1.50 U 2.00 U 1.00 U 1.00 U U U U /4/ U 1.00 U U 1.50 U 2.00 U 1.00 U 1.00 U U 1.00 U 1.00 U U U /29/ U 1.00 U U 1.50 U 2.00 U 1.00 U 1.00 U U 1.00 U 1.00 U U U MW /16/ U 1.00 U U 1.50 U 2.00 U 1.00 U 1.00 U U 1.00 U 1.00 U U U /5/ U U 1.50 U 2.00 U 1.00 U 1.00 U U 1.00 U 1.00 U U U /29/ U 1.00 U U 1.00 U U U MW /16/ U U U 5.00 U /5/ U 10.0 U U U 5.00 U /29/ U U U U MW /16/ , U , U U /5/ , U 25.0 U 25.0 U U 12.5 U /29/ U U 10.0 U U 5.00 U MW /16/ U 10.0 U U U 5.00 U /5/ U U 10.0 U U 5.00 U /29/ U U U MW /16/ U ,370 2, U , U U /5/ U 1.00 U U U U /29/ U U U Tapwater Ingestion & Inhalation Groundwater Volatilization to Outdoor Air Groundwater in Excavation Groundwater Vapor Intrusion into Buildings Urban Residential RBC tw (µg/l) Occupational RBC wo (µg/l) Urban Residential RBC wo (µg/l) Occupational RBC wo (µg/l) Construction & Excavation Worker RBC we (µg/l) Urban Residential RBC wi (µg/l) Occupational RBC wi (µg/l) DEQ Generic RBCs 1.7 4, , , , , ,000 41,000 16,000 1,100,000 1, ,500 1, ,000 4,400 23, ,000 1,700 23, ,300 58,000 1, ,000 5, ,800 7,400 10, , ,800 Notes: 1 = RBDM volatile organic compounds analyses via Method EPA 8260B 2 = July 6, 2012, MW-4 VOCs analyzed via Method EPA 8260B Full List. See laboratory report for full list of analytes. U = not detected at the method reporting limit = none listed Green highlight indicates complete exposure pathway exceedence * = monitoring well MW-1 abandoned, replaced by MW-1A

12 TABLE 4 GROUNDWATER ANALYTICAL RESULTS Polynuclear Aromatic Hydrocarbons th Street SE Salem, OR Phase 2 ESA Temporary Wells Sample ID Depth to Water Date Sampled (feet) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) SB2/TW /13/2011 Acenaphthene 1 Acenaphthylene 1 Anthracene 1 anthracene 1 Benz(a) Benzo(a) pyrene 1 Benzo(b) fluoranthene 1 Benzo(k) fluoranthene 1 Benzo(g,h,i) Dibenz(a,h) Indeno(1,2,3-cd) perylene 1 Chrysene 1 anthracene 1 Fluoranthene 1 Fluorene 1 pyrene 1 Naphthalene 1 Phenanthrene 1 Pyrene 1 SB4/TW /13/2011 SB5/TW /13/2011 SB7/TW /13/2011 SB9/TW /13/2011 MW-1* /6/2012 MW-1A /16/ U U U U U U U U U U U U /5/ U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U MW /6/ /16/ U U U U U U U U U U U U U U U /5/ U U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U U MW /6/ /16/ U U U U U U U U U U U U U U U /4/ U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U Monitoring Wells MW /06/ U U U U U U U U U U U U U U U U /16/ U U U U U U U U U U U U U U U U /4/ U U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U U MW /16/ U U U U U U U U U U U U U U U U /5/ U U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U U MW /16/ U U U U U U U U U U U U /5/ U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U MW /16/ U U U U U U U U U U U U /5/ U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U MW /16/ U U U U U U U U U /5/ U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U MW /16/ U U U U U U U U U U U U /5/ U U U U U U U U U U U U U U U /29/ U U U U U U U U U U U U U U U Tapwater Ingestion & Inhalation Groundwater Volatilization to Outdoor Air Groundwater in Excavation Groundwater Vapor Intrusion into Buildings Urban Residential RBC wo (µg/l) Occupational RBC wo (µg/l) Urban Residential RBC wo (µg/l) Occupational RBC wo (µg/l) Construction & Excavation Worker RBC we (µg/l) Urban Residential RBC wi (µg/l) Occupational RBC wi (µg/l) DEQ Generic RBCs ,400 16, ,800 10,000 Notes: 1 = RBDM polynuclear aromatic hydrocarbons via Method EPA 8270D SIM 2 = Only MW-4 was analyzed for PAHs U = not detected at the method reporting limit = not analyzed / none listed * = monitoring well MW-1 abandoned, replaced by MW-1A July 2012 RBCs in effect at project outset

13 TABLE 5 GROUNDWATER ANALYTICAL RESULTS Total Metals 1 and Dissolved Metals th Street SE Salem, OR Sample ID Depth to Water Date Sampled Total Arsenic 1 Total Barium 1 Total Cadmium 1 Dissolved Cadmium 3 Total Chromium 1 Dissolved Chromium 2 (feet) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) (µg/l) SB2/TW /13/2011 Total Lead 1 Dissolved Lead 2 Total Mercury 1 Total Selenium 1 Total Silver 1 Phase 2 ESA Temporary Wells SB4/TW /13/2011 SB5/TW /13/2011 SB7/TW /13/2011 SB9/TW /13/2011 MW-1* /6/ U MW-1A /16/ /5/ /29/ MW /6/ U /16/ U /5/ U /29/ U MW /6/ U /16/ /4/ /29/ U Monitoring Wells MW /06/ U U 2.00 U 1.00 U 1.00 U U 2.00 U 1.00 U /16/ U /4/ U /29/ U MW /16/ U /5/ U /29/ U MW /16/ /5/ /29/ MW /16/ /5/ /29/ MW /16/ /5/ /29/ U MW /16/ U 1.00 U /5/ /29/ Tapwater Ingestion & Inhalation Groundwater Volatilization to Outdoor Air Groundwater in Excavation Groundwater Vapor Intrusion into Buildings Urban Residential RBC tw (µg/l) Occupational RBC tw (µg/l) Urban Residential RBC wo (µg/l) Occupational RBC wo (µg/l) Construction & Excavation Worker RBC we (µg/l) Urban Residential RBC wi (µg/l) Occupational RBC wi (µg/l) DEQ Generic RBCs , , , nv , , , nv 730 nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv 5,800 57,000 57,000 8,700 8,700 nv nv nv nv 1,000,000 nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv nv Notes: 1 = Total metals analyses via Method EPA 6020 (ICPMS) 2 = Dissolved metals analyses via Method EPA 6020 (ICPMS) 3 = Only MW-4 was analyzed for total metals U = not detected at the method reporting limit nv = Per DEQ guidance (2009), lead is considered non-volatile for the purpose of exposure calculations * = monitoring well MW-1 abandoned, replaced by MW-1A July 2012 RBCs in effect at project outset

14 FIGURES

15 SITE LOCATION SITE LOCATION Scale: 1 Inch = Approximately 1/3 Mile N North FIGURE 1 SITE VICINITY MAP th Street SE Salem, OR 97302

16 Commercial Offices Parking Parking Commercial Offices Commercial Offices Parking Parking Commercial Offices Parking Parking Commercial Offices SITE LOCATION Parking ODOT R-O-W Parking Commercial Offices Park Historical Site Park Rental Car Lot Park Parking Commercial Offices Parking Parking Commercial Offices Scale: 1 Inch = Approximately 150 feet N North FIGURE 2 SITE & SURROUNDING USES th Street SE Salem, Oregon 97301

17 SG-6 MW-3 MW-5 Waste Oil Tank Approximate Former Location Fuel Oil Tank Approximate Former Location MW-4 SG-1 SB9/TW9 MW-9 SB8 SG-4 SB1 SG-5 SB2/TW2 SB6 MW-2 SB7/TW7 MW-1A SB3 SG-2 MW-6 SB4/TW4 SG-3 SB5/TW5 Dispenser Island Approximate Former Locations Gasoline USTs Approximate Former Locations MW-8 SG-7 Dispenser Islands Approximate Former Locations MW-7 Scale: 1 inch = Approximately 60 Feet N North Explanation 10/13/11 Soil Borings/Temporary Wells 10/13/11 Free Product Observed 2014 Monitoring Well Locations 2014 Soil Gas Probe Locations FIGURE 3 SOIL BORING, SOIL GAS PROBE & WELL LOCATIONS th Street SE Salem, Oregon 97302

18 MW MW MW MW MW MW MW-1A MW MW Scale: 1 inch = Approximately 60 Feet N North Explanation Groundwater Monitoring Well Location & ID Groundwater Elevation (feet above MSL) Contour /26/16 Groundwater Elevation (feet above MSL) FIGURE 4 GROUNDWATER ELEVATIONS th Street SE Salem, Oregon 97302

19 GRO: 100 U MW-4 DRO: 190 U ORO: 381 U GRO: 541 MW-3 DRO: 190 U ORO: 381 U MW-3 MW-5 GRO: 2,120 MW-5 DRO: 190 U ORO: 381 U MW-4 SB9/TW9 GRO: 9,810 MW-9 DRO: 190 U ORO: 381 U MW-9 SB8 SB1 SB2/TW2 SB6 MW-2 GRO: 203 MW-2 DRO: 190 U ORO: 381 U SB7/TW7 GRO: 2,490 MW-1A DRO: 190 U ORO: 381 U MW-1A SB3 MW-1 MW-6 SB4/TW4 MW-8 SB5/TW5 GRO: 2,610 MW-6 DRO: 190 U ORO: 381 U MW-7 GRO: 7,110 MW-7 DRO: 385 ORO: 381 U GRO: 2,290 MW-8 DRO: 190 U ORO: 381 U Scale: 1 inch = Approximately 60 Feet N North Explanation 10/13/11 Soil Borings/Temporary Wells 10/13/11 Free Product Observed Monitoring Well Locations GRO = Gasoline-Range Organics (µg/l) DRO = Diesel-Range Organics (µg/l) ORO = Oil-Range Organics (µg/l) U = Not Detected FIGURE 5 TOTAL PETROLEUM HYDROCARBONS IN GROUNDWATER - 1Q th Street SE Salem, Oregon 97302

20 E: U MW-4 N: 2.00 U 1,2,4-TMB: 1.00 U E: 7.22 MW-3 N: 2.00 U 1,2,4-TMB: 1.00 U MW-3 MW-5 E: 2.40 MW-5 N: 2.00 U 1,2,4-TMB: 1.00 U MW-4 SB9/TW9 E: 247 MW-9 N: 121 1,2,4-TMB: 299 MW-9 SB8 SB1 SB2/TW2 SB6 MW-2 E: U MW-2 N: 2.00 U 1,2,4-TMB: 1.00 U E: 11.2 MW-1A N: ,2,4-TMB: 41.4 SB3 SB7/TW7 MW-1A MW-1 MW-6 SB4/TW4 SB5/TW5 E: 49.1 MW-6 N: ,2,4-TMB: 34.4 MW-7 E: 107 MW-7 N: 20.0 U 1,2,4-TMB: 224 E: 40.1 MW-8 N: ,2,4-TMB: MW-8 Scale: 1 inch = Approximately 60 Feet N North Explanation 10/13/11 Soil Borings/Temporary Wells 10/13/11 Free Product Observed Monitoring Well Locations E = Ethylbenzene (µg/l) N = Naphthalene (µg/l) 1,2,4-TMB = 1,2,4-Trimethylbenzene (µg/l) U = Not Detected FIGURE 6 ETHYLBENZENE, NAPHTHALENE & 1,2,4-TRIMETHYLBENZENE IN GROUNDWATER - 1Q th Street SE Salem, Oregon 97302

21 APPENDIX A Groundwater Sample Forms

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31 APPENDIX B Groundwater Analytical Data

32 Thursday, March 17, 2016 Tom Calabrese Portland, OR RE: Former Mid-Valley Motors / Enclosed are the results of analyses for work order A6C0085, which was received by the laboratory on 3/1/2016 at 10:08:00AM. Thank you for using Apex Labs. We appreciate your business and strive to provide the highest quality services to the environmental industry. If you have any questions concerning this report or the services we offer, please feel free to contact me by at: pnerenberg@apex-labs.com, or by phone at Page 1 of 41

33 ANALYTICAL REPORT FOR SAMPLES SAMPLE INFORMATION Sample ID Laboratory ID Matrix Date Sampled Date Received MW-4 MW-3 MW-5 MW-2 MW-6 MW-1A MW-7 MW-8 MW-9 A6C Water 02/29/16 08:45 03/01/16 10:08 A6C Water 02/29/16 09:30 03/01/16 10:08 A6C Water 02/29/16 10:15 03/01/16 10:08 A6C Water 02/29/16 11:00 03/01/16 10:08 A6C Water 02/29/16 12:00 03/01/16 10:08 A6C Water 02/29/16 13:00 03/01/16 10:08 A6C Water 02/29/16 13:45 03/01/16 10:08 A6C Water 02/29/16 14:30 03/01/16 10:08 A6C Water 02/29/16 15:30 03/01/16 10:08 Page 2 of 41

34 ANALYTICAL SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte Result MDL Reporting Limit Units Dilution MW-4 (A6C ) Matrix: Water Batch: Date Analyzed Diesel ND mg/l 1 03/04/16 00:01 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 97 % Limits: % MW-3 (A6C ) Matrix: Water Batch: Diesel ND mg/l 1 03/04/16 00:24 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 100 % Limits: % MW-5 (A6C ) Matrix: Water Batch: Diesel ND mg/l 1 03/04/16 00:46 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 101 % Limits: % MW-2 (A6C ) Matrix: Water Batch: Diesel ND mg/l 1 03/04/16 01:08 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 98 % Limits: % MW-6 (A6C ) Matrix: Water Batch: Diesel ND mg/l 1 03/04/16 01:31 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 99 % Limits: % MW-1A (A6C ) Matrix: Water Batch: Diesel ND mg/l 1 03/04/16 01:53 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 97 % Limits: % MW-7 (A6C ) Matrix: Water Batch: Diesel mg/l 1 03/04/16 02:15 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 101 % Limits: % MW-8 (A6C RE1) Matrix: Water Batch: Diesel ND mg/l 1 03/04/16 11:44 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 90 % Limits: % Method NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx NWTPH-Dx Notes F-18 Page 3 of 41

35 ANALYTICAL SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte Result MDL Reporting Limit Units Dilution MW-9 (A6C ) Matrix: Water Batch: Date Analyzed Diesel ND mg/l 1 03/04/16 03:00 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 95 % Limits: % Method NWTPH-Dx Notes Page 4 of 41

36 ANALYTICAL SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Result MDL Reporting Limit Units Dilution MW-4 (A6C ) Matrix: Water Batch: Date Analyzed Gasoline Range Organics ND mg/l 1 03/04/16 01:50 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 101 % Limits: % 1,4-Difluorobenzene (Sur) 108 % Limits: % MW-3 (A6C ) Matrix: Water Batch: Gasoline Range Organics mg/l 1 03/04/16 02:16 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 99 % Limits: % 1,4-Difluorobenzene (Sur) 110 % Limits: % MW-5 (A6C ) Matrix: Water Batch: Gasoline Range Organics mg/l 1 03/04/16 08:38 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 101 % Limits: % 1,4-Difluorobenzene (Sur) 107 % Limits: % MW-2 (A6C ) Matrix: Water Batch: Gasoline Range Organics mg/l 1 03/04/16 20:34 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 100 % Limits: % 1,4-Difluorobenzene (Sur) 107 % Limits: % MW-6 (A6C ) Matrix: Water Batch: Gasoline Range Organics mg/l 1 03/04/16 21:03 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 105 % Limits: % 1,4-Difluorobenzene (Sur) 111 % Limits: % MW-1A (A6C ) Matrix: Water Batch: Gasoline Range Organics mg/l 1 03/04/16 21:31 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 101 % Limits: % 1,4-Difluorobenzene (Sur) 109 % Limits: % MW-7 (A6C RE1) Matrix: Water Batch: Gasoline Range Organics mg/l 10 03/06/16 16:04 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 100 % Limits: % 1 1,4-Difluorobenzene (Sur) 109 % Limits: % MW-8 (A6C ) Matrix: Water Batch: Gasoline Range Organics mg/l 1 03/04/16 22:00 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 107 % Limits: % 1,4-Difluorobenzene (Sur) 109 % Limits: % Method NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) Notes Page 5 of 41

37 ANALYTICAL SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Result MDL Reporting Limit Units Dilution MW-9 (A6C ) Matrix: Water Batch: Gasoline Range Organics Date Analyzed mg/l 1 03/04/16 22:28 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 103 % Limits: % 1,4-Difluorobenzene (Sur) 109 % Limits: % Method NWTPH-Gx (MS) Notes Page 6 of 41

38 ANALYTICAL SAMPLE RESULTS RBDM Compounds (BTEX+) by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution MW-4 (A6C ) Matrix: Water Batch: Date Analyzed Benzene ND ug/l 1 03/04/16 01:50 Toluene ND Ethylbenzene ND Xylenes, total ND Naphthalene ND Methyl tert-butyl ether (MTBE) ND Isopropylbenzene ND n-propylbenzene ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 112 % Limits: % 1,4-Difluorobenzene (Surr) 105 % Limits: % Toluene-d8 (Surr) 98 % Limits: % 4-Bromofluorobenzene (Surr) 97 % Limits: % MW-3 (A6C RE1) Matrix: Water Batch: Benzene ND ug/l 1 03/04/16 20:05 Toluene Ethylbenzene Xylenes, total Naphthalene ND Methyl tert-butyl ether (MTBE) ND Isopropylbenzene n-propylbenzene ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 102 % Limits: % 1,4-Difluorobenzene (Surr) 106 % Limits: % Toluene-d8 (Surr) 104 % Limits: % 4-Bromofluorobenzene (Surr) 100 % Limits: % MW-5 (A6C RE1) Matrix: Water Batch: Benzene ug/l 1 03/04/16 19:36 Method EPA 8260B EPA 8260B EPA 8260B Notes Page 7 of 41

39 ANALYTICAL SAMPLE RESULTS RBDM Compounds (BTEX+) by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution MW-5 (A6C RE1) Matrix: Water Batch: Toluene Ethylbenzene Xylenes, total Date Analyzed ug/l 1 Naphthalene ND Methyl tert-butyl ether (MTBE) ND Isopropylbenzene n-propylbenzene ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 102 % Limits: % 1,4-Difluorobenzene (Surr) 108 % Limits: % Toluene-d8 (Surr) 105 % Limits: % 4-Bromofluorobenzene (Surr) 99 % Limits: % MW-2 (A6C ) Matrix: Water Batch: Benzene ug/l 1 03/04/16 20:34 Toluene ND Ethylbenzene ND Xylenes, total ND Naphthalene ND Methyl tert-butyl ether (MTBE) ND Isopropylbenzene ND n-propylbenzene ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 106 % Limits: % 1,4-Difluorobenzene (Surr) 103 % Limits: % Toluene-d8 (Surr) 99 % Limits: % 4-Bromofluorobenzene (Surr) 98 % Limits: % MW-6 (A6C ) Matrix: Water Batch: Benzene ND ug/l 1 03/04/16 21:03 Toluene Method EPA 8260B EPA 8260B EPA 8260B Notes Page 8 of 41

40 ANALYTICAL SAMPLE RESULTS RBDM Compounds (BTEX+) by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution MW-6 (A6C ) Matrix: Water Batch: Ethylbenzene Xylenes, total Naphthalene Date Analyzed ug/l 1 Methyl tert-butyl ether (MTBE) ND Isopropylbenzene n-propylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 102 % Limits: % 1,4-Difluorobenzene (Surr) 108 % Limits: % Toluene-d8 (Surr) 102 % Limits: % 4-Bromofluorobenzene (Surr) 98 % Limits: % MW-1A (A6C ) Matrix: Water Batch: Benzene ND ug/l 1 03/04/16 21:31 Toluene Ethylbenzene Xylenes, total Naphthalene Methyl tert-butyl ether (MTBE) ND Isopropylbenzene n-propylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 102 % Limits: % 1,4-Difluorobenzene (Surr) 106 % Limits: % Toluene-d8 (Surr) 101 % Limits: % 4-Bromofluorobenzene (Surr) 98 % Limits: % MW-7 (A6C RE1) Matrix: Water Batch: Benzene ND ug/l 10 03/06/16 16:04 Toluene Ethylbenzene Method EPA 8260B EPA 8260B EPA 8260B Notes Page 9 of 41

41 ANALYTICAL SAMPLE RESULTS RBDM Compounds (BTEX+) by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution MW-7 (A6C RE1) Matrix: Water Batch: Xylenes, total Date Analyzed ug/l 10 Naphthalene ND Methyl tert-butyl ether (MTBE) ND Isopropylbenzene n-propylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 108 % Limits: % 1 1,4-Difluorobenzene (Surr) 105 % Limits: % Toluene-d8 (Surr) 102 % Limits: % 4-Bromofluorobenzene (Surr) 96 % Limits: % MW-8 (A6C ) Matrix: Water Batch: Benzene Toluene Ethylbenzene Xylenes, total Naphthalene ug/l 1 03/04/16 22:00 Methyl tert-butyl ether (MTBE) ND Isopropylbenzene n-propylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 101 % Limits: % 1,4-Difluorobenzene (Surr) 105 % Limits: % Toluene-d8 (Surr) 98 % Limits: % 4-Bromofluorobenzene (Surr) 103 % Limits: % MW-9 (A6C ) Matrix: Water Batch: Benzene Toluene Naphthalene ug/l 1 03/04/16 22:28 Methyl tert-butyl ether (MTBE) ND Method EPA 8260B EPA 8260B EPA 8260B Notes Page 10 of 41

42 ANALYTICAL SAMPLE RESULTS RBDM Compounds (BTEX+) by EPA 8260B Analyte Result MDL Reporting Limit Units Dilution MW-9 (A6C ) Matrix: Water Batch: Isopropylbenzene n-propylbenzene 1,3,5-Trimethylbenzene Date Analyzed ug/l 1 1,2-Dibromoethane (EDB) ND ,2-Dichloroethane (EDC) ND Surrogate: Dibromofluoromethane (Surr) Recovery: 100 % Limits: % 1,4-Difluorobenzene (Surr) 105 % Limits: % Toluene-d8 (Surr) 105 % Limits: % 4-Bromofluorobenzene (Surr) 103 % Limits: % MW-9 (A6C RE1) Matrix: Water Batch: Ethylbenzene Xylenes, total 1,2,4-Trimethylbenzene ug/l 20 03/06/16 15:38 Surrogate: Dibromofluoromethane (Surr) Recovery: 111 % Limits: % 1 1,4-Difluorobenzene (Surr) 105 % Limits: % Toluene-d8 (Surr) 101 % Limits: % 4-Bromofluorobenzene (Surr) 93 % Limits: % Method EPA 8260B EPA 8260B Notes Page 11 of 41

43 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution MW-4 (A6C ) Matrix: Water Batch: Date Analyzed Acenaphthene ND ug/l 1 03/08/16 15:42 Acenaphthylene ND Anthracene ND Benz(a)anthracene ND Benzo(a)pyrene ND Benzo(b)fluoranthene ND Benzo(k)fluoranthene ND Benzo(g,h,i)perylene ND Chrysene ND Dibenz(a,h)anthracene ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Naphthalene ND Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 53 % Limits: % p-terphenyl-d14 (Surr) 103 % Limits: % Method EPA 8270D (SIM) Notes Page 12 of 41

44 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution MW-3 (A6C ) Matrix: Water Batch: Date Analyzed Acenaphthene ND ug/l 1 03/08/16 16:08 Acenaphthylene ND Anthracene ND Benz(a)anthracene ND Benzo(a)pyrene ND Benzo(b)fluoranthene ND Benzo(k)fluoranthene ND Benzo(g,h,i)perylene ND Chrysene ND Dibenz(a,h)anthracene ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Naphthalene Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 53 % Limits: % p-terphenyl-d14 (Surr) 98 % Limits: % Method EPA 8270D (SIM) Notes Page 13 of 41

45 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution MW-5 (A6C ) Matrix: Water Batch: Date Analyzed Acenaphthene ND ug/l 1 03/08/16 16:35 Acenaphthylene ND Anthracene ND Benz(a)anthracene ND Benzo(a)pyrene ND Benzo(b)fluoranthene ND Benzo(k)fluoranthene ND Benzo(g,h,i)perylene ND Chrysene ND Dibenz(a,h)anthracene ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Naphthalene ND Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 49 % Limits: % p-terphenyl-d14 (Surr) 101 % Limits: % Method EPA 8270D (SIM) Notes R-02 Page 14 of 41

46 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution MW-2 (A6C ) Matrix: Water Batch: Date Analyzed Acenaphthene ND ug/l 1 03/08/16 17:01 Acenaphthylene ND Anthracene ND Benz(a)anthracene ND Benzo(a)pyrene ND Benzo(b)fluoranthene ND Benzo(k)fluoranthene ND Benzo(g,h,i)perylene ND Chrysene ND Dibenz(a,h)anthracene ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Naphthalene ND Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 57 % Limits: % p-terphenyl-d14 (Surr) 100 % Limits: % Method EPA 8270D (SIM) Notes Page 15 of 41

47 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Result MDL Reporting Limit Units Dilution MW-6 (A6C ) Matrix: Water Batch: Date Analyzed Acenaphthene ND ug/l 1 03/08/16 17:28 Acenaphthylene ND Anthracene ND Benz(a)anthracene ND Benzo(a)pyrene ND Benzo(b)fluoranthene ND Benzo(k)fluoranthene ND Benzo(g,h,i)perylene ND Chrysene ND Dibenz(a,h)anthracene ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Naphthalene Phenanthrene Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 52 % Limits: % p-terphenyl-d14 (Surr) 100 % Limits: % Method EPA 8270D (SIM) Notes Page 16 of 41