Site Assessment for DeLake District. Dear Ms. Robertson:

Transcription

1 2001 NW 19 th Avenue, Suite 200 Portland, OR August 1, 2018 Project No Alison Robertson, AICP, LEED AP Lincoln City Urban Renewal Agency 801 SW Highway 101 Box 50 Lincoln City, Oregon Re: Site Assessment for DeLake District Dear Ms. Robertson: On behalf of the Lincoln City Urban Renewal Agency, Maul Foster & Alongi, Inc. (MFA) conducted a site assessment to address data gaps identified in a Phase I environmental site assessment (ESA; MFA, 2017) of Hostetler Park (the Property), located on Northeast First Street, Lincoln City, Oregon (see the attached figure). The Lincoln County tax parcel ID for the 2.3-acre Property is AC The results of the assessment are summarized below. BACKGROUND The Property is currently an undeveloped, vacant lot that includes graveled and vegetated areas. Historical photographs from the 1950s and 1960s obtained during the Phase I ESA indicate that the Property was occupied by a restaurant and possibly a fueling facility, as indicated by what appeared to be fuel pumps adjacent to a bulkhead/retaining wall along the shore of Devil s Lake and a pole-mounted sign with the appearance of a 1950s-era Chevron gasoline sign. However, documents indicating whether the fueling facility included underground storage tanks (USTs) or aboveground tanks, whether USTs are still present, or whether historical releases occurred were not identified. The Phase I ESA report identified this lack of information as a data gap. Additionally, the title report obtained during the Phase I ESA indicated that fill had been placed on a portion of the Property. Documentation of the fill material source or presence/absence of contamination in the fill was not identified. The Phase I ESA report identified the lack of information related to fill placement as a data gap. INVESTIGATION OBJECTIVES AND SCOPE OF WORK The objective of the assessment was to obtain data to address the data gaps identified during the Phase I ESA. The following activities were completed to address the data gaps: Soil samples were collected near the former bulkhead to assess the presence of petroleum substances in soil near the former fueling facility (see the figure), and to assess potential fill placed behind the bulkhead. R:\ Lincoln City\Document\02_ DeLake Report\Lf_DeLakeAssessment.docx

2 Alison Robertson Project No August 1, 2018 Page 2 A geophysical survey was conducted in the vicinity of the fueling facility to identify subsurface features that could be interpreted as a UST or a backfilled UST pit. Soil and groundwater samples were collected in the area of disturbed soil layers as identified by the geophysical survey to assess the presence of petroleum substances. FIELD INVESTIGATION ACTIVITIES On March 1, 2018, MFA contacted the Oregon Utility Notification Center (OUNC) to conduct a public utility locate on the Property. OUNC notified appropriate utility companies; no evidence of buried utilities was identified. The soil sample collection near the former bulkhead and the geophysical survey were conducted on March 7, 2018, and the soil and groundwater sample collection in the area of the disturbed soil layers was conducted on June 28, Geophysical Survey The geophysical investigation was conducted by GPR Data, Inc. A ground-penetrating microwave radar (GPMR) methodology was applied to investigate the potential presence of USTs on the Property. Four two-dimensional GPMR data profiles were acquired at regular and documented intervals in a grid pattern using a 400MHz frequency array GPMR antenna. Additionally, an RD8000 pipe and metal locator was used within the GPMR survey grid to scan for metal USTs. The geophysical survey report is provided as Attachment A. Soil Sample Collection Near the Former Bulkhead Two soil borings, designated SS1 and SS2 on the attached figure, were advanced 1 to 2 feet below ground surface (bgs), using a stainless steel hand auger. Soil characteristics, including color, texture, moisture content, and visual or olfactory evidence of contamination, were documented at each boring. The following soil units were encountered at both borings: A light brown, clayey sand was present to a depth of 1 foot. The sand included subangular to subrounded, gravel-size inclusions of clayey soil and trace organics, including woody debris. No visual or olfactory evidence of contamination such as a petroleum odor, sheen, or staining was observed. Based on the presence of the clay soil inclusions, this soil unit was interpreted as fill. Alternatively, this apparently disturbed soil unit could possibly be related to the 1964 tsunami. A gray, poorly sorted, medium-grained, loose sand was observed from 1 to 2 feet bgs. No visual or olfactory evidence of contamination was observed. This soil unit is interpreted as beach sand, which is visible on historical site photographs. Based on the soil units observed, the following three soil samples were collected: Sample SS1-1.0 was collected from the clayey sand surface soil unit at a depth of 1 foot at boring SS1. R:\ Lincoln City\Document\02_ DeLake Report\Lf_DeLakeAssessment.docx

3 Alison Robertson Project No August 1, 2018 Page 3 Sample SS1-1.5 was collected from the loose sand subsurface soil unit at a depth of 1.5 feet at boring SS1. Sample SS2-1.8 was collected from the loose sand subsurface soil unit at a depth of 1.8 feet at boring SS2. The hand auger was decontaminated prior to and between boring locations by scrubbing with a solution of Alconox detergent and distilled water, and triple-rinsing with distilled water. The borings were backfilled with the soil removed from the boring. Decontamination washwater was absorbed with paper towels. Nitrile gloves and paper towels were disposed of in normal trash. Investigation-derived waste was not generated. Soil and Groundwater Sample Collection in Area of Disturbed Soil Layers Two soil borings, designated on the attached figure as HA1 and HA2, were advanced to depths of 5 feet and 3 feet bgs, respectively, using a stainless-steel hand auger. One groundwater sample was collected from soil boring HA1 using a disposable plastic bailer. Groundwater was located at 5 feet in soil boring HA1 and refusal occurred at approximately 3 feet in soil boring HA2. Based on the discovery of groundwater and on refusal, the following samples were collected: Soil sample HA was collected from boring HA1 at a depth of 5 feet. The soil was wet and sandy. Soil sample HA was collected from boring HA2 at a depth of 3 feet. The soil was moist and sandy. Groundwater sample GW was collected from boring HA1 at a depth of 5 feet. The hand auger was decontaminated prior to and between boring locations by scrubbing the auger with a solution of Alconox detergent and distilled water, and triple-rinsing with distilled water. The borings were backfilled with the soil removed from the boring. Decontamination washwater was absorbed with paper towels. Nitrile gloves, paper towels, and the disposable plastic bailer were disposed of in normal trash. Investigation-derived waste was not generated. LABORATORY ANALYSES Soil samples were submitted to, LLC (Apex) under standard chain-ofcustody procedures and were analyzed for the following: Diesel-range organics and residual-range organics by NWTPH-Dx. Gasoline-range organics by NWTPH-Gx. R:\ Lincoln City\Document\02_ DeLake Report\Lf_DeLakeAssessment.docx

4 Alison Robertson Project No August 1, 2018 Page 4 Volatile organic compounds (VOCs) by U.S. Environmental Protection Agency (USEPA) Methods 5035A/8260C. Polychlorinated biphenyls (PCBs) by USEPA Method 8082A. Polycyclic aromatic hydrocarbons (PAHs) by USEPA Method 8270D SIM. Priority pollutant metals by USEPA Method 6020 (antimony, arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, thallium, and zinc). Groundwater samples were also submitted to Apex under standard chain-of-custody procedures and were analyzed for the following: Diesel-range organics and residual-range organics by NWTPH-Dx Gasoline-range organics by NWTPH-Gx VOCs by USEPA Methods 5035A/8260C PAHs by USEPA Method 8270D SIM Analytical laboratory results are included in Attachment B. Data validation memoranda are included as Attachment C. The data are considered acceptable for their intended use, with the appropriate data qualifiers assigned. GEOPHYSICAL SURVEY RESULTS The GPMR survey identified an area of disturbed soil at the location indicated on the figure. The disturbance appears to extend to a depth of at least 100 inches (Attachment A). The RD8000 pipe and metal locator did not identify metal objects buried in the survey area, including in the area of disturbed soil. The soil disturbance could have been the result of a formerly buried UST that was removed, and the UST pit backfilled. Since a building was formerly located in this area, the soil disturbance may also be due to construction or demolition of that building. ASSESSMENT RESULTS Soil Samples Table 1 presents the soil sample analytical results and compares them to the following screening level values (SLVs): Oregon Department of Environmental Quality (DEQ) Risk-Based Concentrations (RBCs) for Soil Ingestion, Dermal Contact, and Inhalation exposure pathways for Urban Residential, Construction Worker, and Excavation Worker receptors (DEQ, 2018). The DEQ clean fill criteria for uplands (DEQ, 2014). R:\ Lincoln City\Document\02_ DeLake Report\Lf_DeLakeAssessment.docx

5 Alison Robertson Project No August 1, 2018 Page 5 DEQ background concentrations for metals (DEQ, 2013). As shown on Table 1, antimony, mercury, silver, thallium, PCBs, PAHs, and residual-range petroleum hydrocarbons were not detected above the method detection limit. The following metals and petroleum hydrocarbons were detected: Beryllium, chromium, copper, lead, nickel, and zinc were detected, but at concentrations less than the SLVs. Arsenic was detected in all five samples at concentrations exceeding the RBC for Urban Residential exposure. However, since the concentrations are less than the natural background concentration, the risk of Urban Residential receptor exposure to arsenic is less than the background risk. Additionally, the concentrations are less than the DEQ clean fill criteria, which are also based on the background concentration. Cadmium was detected in the surface clayey sand unit at boring SS1 at a concentration greater than the clean fill criterion and the background concentration, but less than the RBCs, indicating that there is no risk of exposure to cadmium. Selenium was detected in the surface clayey sand unit at boring SS1 at a concentration greater than the clean fill criterion and the background concentration. No RBC is available for selenium. Gasoline-range petroleum hydrocarbons were detected in the sample at HA2, but at a concentration less than the SLVs. Diesel-range petroleum hydrocarbons were detected in the sample at HA1, but at a concentration less than the SLVs. 4-Isopropyltoluene was detected in HA2; however, there are no SLVs for this constituent. Groundwater Sample The groundwater sample analytical results are presented and compared to the following SLVs on Table 2: DEQ RBCs for groundwater for Urban Residential and groundwater in Excavation for Construction Worker and Excavation Worker receptors (DEQ, 2018). As shown in Table 2, VOCs, PAHs, and diesel- and residual-range petroleum hydrocarbons were not detected above the method detection limit. Gasoline-range petroleum hydrocarbons were detected in the sample, but at a concentration less than the SLVs. R:\ Lincoln City\Document\02_ DeLake Report\Lf_DeLakeAssessment.docx

6 Alison Robertson August 1, 2018 Page 6 Project No CONCLUSIONS The site assessment results indicate the following with respect to the data gaps identified in the Phase I ESA: There was no evidence of a UST present at the site, and there was no indication of a former release in the area of disturbed soil identified by the geophysical survey. There was evidence of surface fill at the site. Metals concentrations in at least one location slightly exceeded the clean fill criteria. During future redevelopment of the site, removed soil should be sampled to determine options for reuse or potential disposal. Sincerely, Maul Foster & Alongi, Inc. Merideth D Andrea, RG Senior Geologist Seth Otto, AICP, LEED AP Senior Planner/Project Manager Attachments: ations References Tables Figure A Geophysical Survey Report (GPR Data, Inc.) B Laboratory Analytical Reports C Data Validation Memoranda R:\ Lincoln City\Document\02_ DeLake Report\Lf_DeLakeAssessment.docx

7 LIMITATIONS The services undertaken in completing this report were performed consistent with generally accepted professional consulting principles and practices. No other warranty, express or implied, is made. These services were performed consistent with our agreement with our client. This report is solely for the use and information of our client unless otherwise noted. Any reliance on this report by a third party is at such party s sole risk. Opinions and recommendations contained in this report apply to conditions existing when services were performed and are intended only for the client, purposes, locations, time frames, and project parameters indicated. We are not responsible for the impacts of any changes in environmental standards, practices, or regulations subsequent to performance of services. We do not warrant the accuracy of information supplied by others, or the use of segregated portions of this report.

8 REFERENCES DEQ Development of Oregon background metals concentrations in soil. Oregon Department of Environmental Quality. March. DEQ Internal management directive clean fill determinations. Oregon Department of Environmental Quality. July 23. DEQ Risk-based concentrations for individual chemicals. Oregon Department of Environmental Quality. November 1. Updated May MFA Phase I environmental site assessment for the DeLake District. Maul Foster & Alongi, Inc., Portland, Oregon. December 15.

9 TABLES

10 Location: Sample Name: Collection Date: Collection Depth (ft bgs): Oregon Background Metals, Coast Range DEQ Clean Fill for Uplands a Table 1 Summary of Soil Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon RBC, Soil, Ingestion, Dermal Contact, and Inhalation Urban Residential Construction/ Excavation Worker b Metals (mg/kg) Antimony NV NV U U 0.72 U 1.31 U 1.08 U Arsenic Beryllium U U U U Cadmium J U U U Chromium c c Copper Lead Mercury U U U U U Nickel Selenium NV NV 1.64 J U 0.72 U 1.31 U 1.08 U Silver U U U U U Thallium NV NV U U U U U Zinc NV NV PCB Aroclors (mg/kg) Aroclor 1016 NV NV NV NV U U U U U Aroclor 1221 NV NV NV NV U U U U U Aroclor 1232 NV NV NV NV U U U U U Aroclor 1242 NV NV NV NV U U U U U Aroclor 1248 NV NV NV NV U U U U U Aroclor 1254 NV NV NV NV U U U U U Aroclor 1260 NV NV NV NV U U U U U Total PCBs d NV U U U U U SS /07/ SS1 SS /07/ SS2 SS /07/ HA1 HA HA2 HA /28/ /28/ R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 1 of 6

11 Location: Sample Name: Collection Date: Collection Depth (ft bgs): Oregon Background Metals, Coast Range DEQ Clean Fill for Uplands a Table 1 Summary of Soil Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon RBC, Soil, Ingestion, Dermal Contact, and Inhalation Urban Residential Construction/ Excavation Worker b SS /07/ SS1 SS /07/ SS2 SS /07/ HA1 HA HA2 HA /28/ /28/ VOCs (mg/kg) 1,1,1,2-Tetrachloroethane NV NV NV U U U U U 1,1,1-Trichloroethane NV U U U U U 1,1,2,2-Tetrachloroethane NV NV NV U U U U U 1,1,2-Trichloroethane NV U U U U U 1,1-Dichloroethane NV U U U U U 1,1-Dichloroethene NV U U U U U 1,1-Dichloropropene NV NV NV NV U U U U U 1,2,3-Trichlorobenzene NV 20 NV NV U U U U U 1,2,3-Trichloropropane NV NV NV U U U U U 1,2,4-Trichlorobenzene NV NV NV U U U U U 1,2,4-Trimethylbenzene NV U U U U U 1,2-Dibromo-3-chloropropane NV NV NV U U U U U 1,2-Dibromoethane NV U U U U U 1,2-Dichlorobenzene NV U U U U U 1,2-Dichloroethane NV U U U U U 1,2-Dichloropropane NV NV NV U U U U U 1,3,5-Trimethylbenzene NV U U U U U 1,3-Dichlorobenzene NV NV NV NV U U U U U 1,3-Dichloropropane NV 7.62 NV NV U U U U U 1,4-Dichlorobenzene NV U U U U U 2,2-Dichloropropane NV NV NV NV U U U U U 2-Butanone NV NV NV U U U U U 2-Chlorotoluene NV NV NV U U U U U 2-Hexanone NV NV NV U U U U U 4-Chlorotoluene NV 22.5 NV NV U U U U U 4-Isopropyltoluene NV NV NV NV U U U U 2.43 R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 2 of 6

12 Location: Sample Name: Collection Date: Collection Depth (ft bgs): Oregon Background Metals, Coast Range DEQ Clean Fill for Uplands a Table 1 Summary of Soil Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon RBC, Soil, Ingestion, Dermal Contact, and Inhalation Urban Residential Construction/ Excavation Worker b SS /07/ SS1 SS /07/ SS2 SS /07/ HA1 HA HA2 HA /28/ /28/ Methyl-2-pentanone NV 8.04 NV NV U U U U U Acetone NV NV NV 1.08 U U U 1.38 U U Acrylonitrile NV U U U U U Benzene NV U U U U U Bromobenzene NV NV NV U U U U U Bromodichloromethane NV U U U U U Bromoform NV U U U U U Bromomethane NV U U U U U Carbon disulfide NV NV NV U U U U U Carbon tetrachloride NV U U U U U Chlorobenzene NV U U U U U Chlorobromomethane NV NV NV U U U U U Chloroethane NV NV U U U UJ UJ Chloroform NV U U U U U Chloromethane NV U U U U U cis-1,2-dichloroethene NV U U U U U cis-1,3-dichloropropene NV NV NV NV U U U U U Dibromochloromethane NV U U U U U Dibromomethane NV NV NV U U U U U Dichlorodifluoromethane (Freon 12) NV 94 NV NV U U U U U Ethylbenzene NV U U U U U Hexachlorobutadiene NV NV NV U U U U U Isopropylbenzene NV U U U U U m,p-xylene NV NV NV NV U U U U U Methyl tert-butyl ether NV U U U U U Methylene chloride NV U U U U U Naphthalene NV U U U U U R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 3 of 6

13 Location: Sample Name: Collection Date: Collection Depth (ft bgs): Oregon Background Metals, Coast Range DEQ Clean Fill for Uplands a Table 1 Summary of Soil Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon RBC, Soil, Ingestion, Dermal Contact, and Inhalation Urban Residential Construction/ Excavation Worker b SS /07/ SS1 SS /07/ SS2 SS /07/ HA1 HA HA2 HA /28/ /28/ n-butylbenzene NV NV NV NV U U U U U n-propylbenzene NV NV NV NV U U U U U o-xylene NV 1 NV NV U U U U U sec-butylbenzene NV NV NV NV U U U U U Styrene NV U U U U U tert-butylbenzene NV NV NV NV U U U U U Tetrachloroethene NV U U U U U Toluene NV U U U U U trans-1,2-dichloroethene NV U U U U U trans-1,3-dichloropropene NV NV NV NV U U U U U Trichloroethene NV U U U U U Trichlorofluoromethane (Freon 11) NV U U U U U Vinyl chloride NV U U U U U Xylenes, total e NV U U U U U PAHs (mg/kg) 1-Methylnaphthalene NV NV NV U U U U U 2-Methylnaphthalene NV 310 NV NV U U U U U Acenaphthene NV U U U U U Acenaphthylene NV NV NV NV U U U U U Anthracene NV U U U U U Benzo(a)anthracene NV U U U U U Benzo(a)pyrene NV U U U U U Benzo(b)fluoranthene NV U U U U U Benzo(ghi)perylene NV NV NV NV U U U U U Benzo(k)fluoranthene NV U U U U U Chrysene NV U U U U U Dibenzo(a,h)anthracene NV U U U U U R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 4 of 6

14 Location: Sample Name: Collection Date: Collection Depth (ft bgs): Oregon Background Metals, Coast Range DEQ Clean Fill for Uplands a Table 1 Summary of Soil Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon RBC, Soil, Ingestion, Dermal Contact, and Inhalation Urban Residential Construction/ Excavation Worker b SS /07/ SS1 SS /07/ SS2 SS /07/ HA1 HA HA2 HA /28/ /28/ Dibenzofuran NV NV NV U U U U U Fluoranthene NV U U U U U Fluorene NV U U U U U Indeno(1,2,3-cd)pyrene NV U U U U U Naphthalene NV U U U U U Phenanthrene NV NV NV NV U U U U U Pyrene NV U U U U U cpah TEQ NV NV U U U U U TPH (mg/kg) Gasoline-range Hydrocarbons NV NV U 3.29 U 3.76 U 6.91 U 33.2 Diesel-range Hydrocarbons NV NV U 12.3 U 13 U U Lube-oil-range Hydrocarbons NV NV 2200 f 4600 f 30.4 U 24.6 U 26 U 50.1 U 50 U R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 5 of 6

15 Table 1 Summary of Soil Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon NOTES: values in bold font indicate a detection. Shaded result values indicate exceedance of DEQ Clean Fill screening levels or RBCs. Non-detect results are not evaluated against Clean Fill or RBC values. cpah TEQ = carcinogenic PAH toxic equivalence. When all cpah constituents are non-detect, the highest non-detect value is shown. cpah TEQ values are based on toxic equivalence factors from USEPA Provisional Guidance for Quantitative Risk Assessment of Polycyclic Aromatic Hydrocarbons (EPA/600/R-93/089) DEQ = Oregon Department of Environmental Quality. ft bgs = feet below ground surface. J = result is an estimated value. mg/kg = milligrams per kilogram. NV = no value, value exceeds 1,000,000 mg/kg, or RBC exceeds limit of three-phase equilibrium partitioning. PAH = polycyclic aromatic hydrocarbon. PCB = polychlorinated biphenyl. RBCs = risk-based concentrations for individual chemicals (DEQ, May 2018). TPH = total petroleum hydrocarbons. U = result not detected at or above method detection limit or method reporting limit. USEPA = U.S. Environmental Protection Agency. VOC = volatile organic compound. a Clean fill values for metals are provided for Coast Range, except for beryllium and silver, which have statewide values. b Screening value is the lower of available direct-contact RBC for construction worker or excavation worker. c Value is for trivalent chromium. d Total PCBs are sum of PCB Aroclors. Non-detect results are not included in the sum. When all results are non-detect, the highest value is reported. e Total xylenes are sum of m,p-xylene and o-xylene. s are summed at one-half the reported value when non-detect. When both results are non-detect, the higher value is reported. f Value is for generic diesel/heating oil, since generic residual-range hydrocarbon values are not available. R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 6 of 6

16 Table 2 Summary of Groundwater Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon Location: Sample Name: Collection Date: Collection Depth (ft bgs): RBC, Groundwater, Urban Residential RBC, Groundwater in Excavation, Construction and Excavation HA1 GW /28/ VOCs (ug/l) 1,1,1,2-Tetrachloroethane NV NV 0.4 UJ 1,1,1-Trichloroethane UJ 1,1,2,2-Tetrachloroethane NV NV 0.5 UJ 1,1,2-Trichloroethane UJ 1,1-Dichloroethane UJ 1,1-Dichloroethene UJ 1,1-Dichloropropene NV NV 1 UJ 1,2,3-Trichlorobenzene NV NV 2 UJ 1,2,3-Trichloropropane NV NV 1 UJ 1,2,4-Trichlorobenzene NV NV 2 UJ 1,2,4-Trimethylbenzene UJ 1,2-Dibromo-3-chloropropane NV NV 5 UJ 1,2-Dibromoethane UJ 1,2-Dichlorobenzene UJ 1,2-Dichloroethane UJ 1,2-Dichloropropane NV NV 0.5 UJ 1,3,5-Trimethylbenzene UJ 1,3-Dichlorobenzene NV NV 0.5 UJ 1,3-Dichloropropane NV NV 1 UJ 1,4-Dichlorobenzene UJ 2,2-Dichloropropane NV NV 1 UJ 2-Butanone NV NV 10 UJ 2-Chlorotoluene NV NV 1 UJ 2-Hexanone NV NV 10 UJ 4-Chlorotoluene NV NV 1 UJ 4-Isopropyltoluene NV NV 1 UJ 4-Methyl-2-pentanone NV NV 10 UJ Acetone NV NV 20 UJ Acrylonitrile UJ Benzene UJ Bromobenzene NV NV 0.5 UJ Bromodichloromethane UJ Bromoform UJ Bromomethane UJ Carbon disulfide NV NV 10 UJ Carbon tetrachloride UJ Chlorobenzene UJ Chlorobromomethane NV NV 1 UJ Chloroethane UJ Chloroform UJ Chloromethane UJ cis-1,2-dichloroethene UJ cis-1,3-dichloropropene NV NV 1 UJ R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 1 of 3

17 Table 2 Summary of Groundwater Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon Location: Sample Name: Collection Date: Collection Depth (ft bgs): RBC, Groundwater, Urban Residential RBC, Groundwater in Excavation, Construction and Excavation HA1 GW /28/2018 Dibromochloromethane UJ Dibromomethane NV NV 1 UJ Dichlorodifluoromethane (Freon 12) NV NV 1 UJ Ethylbenzene UJ Hexachlorobutadiene NV NV 5 UJ Isopropylbenzene UJ m,p-xylene NV NV 1 UJ Methyl tert-butyl ether UJ Methylene chloride UJ Naphthalene UJ n-butylbenzene NV NV 1 UJ n-propylbenzene NV NV 0.5 UJ o-xylene NV NV 0.5 UJ sec-butylbenzene NV NV 1 UJ Styrene UJ tert-butylbenzene NV NV 1 UJ Tetrachloroethene UJ Toluene UJ trans-1,2-dichloroethene UJ trans-1,3-dichloropropene NV NV 1 UJ Trichloroethene UJ Trichlorofluoromethane (Freon 11) UJ Vinyl chloride UJ Xylenes, total a UJ PAHs (ug/l) 1-Methylnaphthalene NV NV U 2-Methylnaphthalene NV NV U Acenaphthene 2400 NV U Acenaphthylene NV NV U Anthracene NV NV U Benzo(a)anthracene 0.11 NV U Benzo(a)pyrene 0.08 NV U Benzo(b)fluoranthene 0.8 NV U Benzo(ghi)perylene NV NV U Benzo(k)fluoranthene NV NV U Chrysene NV NV U Dibenzo(a,h)anthracene 0.08 NV U Dibenzofuran NV NV U Fluoranthene NV NV U Fluorene 1400 NV U Indeno(1,2,3-cd)pyrene NV NV U Naphthalene U Phenanthrene NV NV U Pyrene NV NV U cpah TEQ 0.08 NV U 5 R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 2 of 3

18 Table 2 Summary of Groundwater Analytical s DeLake Property Assessment Lincoln City Urban Renewal Agency Lincoln City, Oregon Location: Sample Name: Collection Date: Collection Depth (ft bgs): RBC, Groundwater, Urban Residential RBC, Groundwater in Excavation, Construction and Excavation HA1 GW /28/2018 TPH (ug/l) Gasoline-Range Hydrocarbons J Diesel-Range Hydrocarbons 100 NV 229 U Motor-Oil-Range Hydrocarbons 100 b NV 457 U NOTES: values in bold font indicate a detection. cpah TEQ = carcinogenic PAH toxic equivalence. When all cpah constituents are non-detect, the highest non-detect value is shown. cpah TEQ values are based on toxic equivalence factors from USEPA Provisional Guidance for Quantitative Risk Assessment of Polycyclic Aromatic Hydrocarbons (EPA/600/R-93/089) DEQ = Oregon Department of Environmental Quality. ft bgs = feet below ground surface. J = result is an estimated value. NV = no value or value exceeds the solubility limit. PAH = polycyclic aromatic hydrocarbon. RBCs = risk-based concentrations for individual chemicals (DEQ, May 2018). TPH = total petroleum hydrocarbon. U = result not detected at or above method reporting limit. ug/l = micrograms per liter. UJ = result is not detected and an estimated value. USEPA = U.S. Environmental Protection Agency. VOC = volatile organic compound. a Total xylenes are sum of m,p-xylene and o-xylene. s are summed at one-half the reported value when non-detect. When both results are non-detect, the higher value is reported. b Value is for generic diesel/heating oil, since generic residual-range hydrocarbon values are not available. 5 R:\ Lincoln City\Document\02_ DeLake Report\Tables\Tf_Lincoln City_DeLake_2018.xls Page 3 of 3

19 FIGURE

20 Project: Produced By: rroberts Approved By: C. Wise Print Date: 8/1/2018 Path: X:\ Lincoln City\Projects\Fig_Property Featres De Lake.mxd SE Hwy 101 SE 1st St. US Hwy 101 NE Hwy AC SS2!(!( HA2!(!( SS1 HA1 NE 1st St. Figure Property Features DeLake!( NE 1st Street Lincoln City, Oregon Feet Legend Surface Soil Boring Area of Disturbed Soil Layers Identified by GPMR Survey Approximate Area of Former Bulkhead/Retaining Wall Property Parcel Note: GPMR = Ground Penetrating Microwave Radar. Source: Aerial photograph obtained from Mapbox. p This product is for informational purposes and may not have been prepared for, or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information.

21 ATTACHMENT A GEOPHYSICAL SURVEY REPORT (GPR DATA, INC.)

22 1 MAULFOSTER ENGINEERS UST TANK SEARCH LINCOLN CITY OREGON COMPLETED MARCH 7TH 2018 BY GPR DATA INC. Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

23 2 FINDINGS GPMR was used in a regular grid pattern (30 X 60 ) to cover the areas shown in the photo s. No UST or evidence there of, was found. In addition a specialty metal detector was used to additionally survey the grid area and no metal UST was found. Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

24 FIELD NOTES TAKEN AT SITE 3 Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

25 PHOTO OF SURVEY AREA 4 Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

26 PHOTO OF SURVEY AREA 5 Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

27 PHOTO OF SURVEY AREA 6 Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

28 PHOTO S OF SURVEY AREA 7 Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

29 PHOTO S OF SURVEY AREA 8 Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

30 TRANSECTS 1 AND 2 GOING THE LENGTH OF THE GRID 9 NORMAL UNDIS- TURBED EARTH At sometime the ground has been dug in the section to the left. No tank or other device is present at this time. Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

31 TRANSECTS 3 AND 4 GOING THE LENGTH OF THE GRID 10 At sometime the ground has been dug in the section to the left. Ground Penetrating Radar Experts 2580 Edgewater Drive, Eugene, OR Tel: Fax:

32 ATTACHMENT B LABORATORY ANALYTICAL REPORTS (APEX LABORATORIES LLC)

33 Apex Labs AMENDED REPORT Phone Fax Wednesday, April 4, 2018 Merideth D'Andrea Portland, OR RE: Devil's Lake Lincoln City / Enclosed are the results of analyses for work order A8C0238, which was received by the laboratory on 3/7/2018 at 5:07:00PM. 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: ldomenighini@apex-labs.com, or by phone at Lisa Domenighini For Philip Nerenberg, Lab Director Page 1 of 44

34 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL REPORT FOR SAMPLES SAMPLE INFORMATION Sample ID Laboratory ID Matrix Date Sampled Date Received SS1-1.0 SS2-1.8 SS1-1.5 A8C Soil 03/07/18 10:55 03/07/18 17:07 A8C Soil 03/07/18 13:18 03/07/18 17:07 A8C Soil 03/07/18 11:55 03/07/18 17:07 Lisa Domenighini For Philip Nerenberg, Lab Director Page 2 of 44

35 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL CASE NARRATIVE Work Order: A8C0238 Amended Report Revision 1: to the Method Detection s (MDLs)- This report supersedes all previous reports. The final report has been amended to report all samples to the MDLs. Lisa Domenighini Client Services Manager Lisa Domenighini For Philip Nerenberg, Lab Director Page 3 of 44

36 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed Diesel ND mg/kg dry 1 03/13/18 21:25 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 78 % s: % SS2-1.8 (A8C ) Matrix: Soil Batch: Diesel ND mg/kg dry 1 03/13/18 22:08 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 92 % s: % SS1-1.5 (A8C ) Matrix: Soil Batch: Diesel ND mg/kg dry 1 03/13/18 22:29 Oil ND Surrogate: o-terphenyl (Surr) Recovery: 92 % s: % Method NWTPH-Dx NWTPH-Dx NWTPH-Dx Lisa Domenighini For Philip Nerenberg, Lab Director Page 4 of 44

37 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed Gasoline Range Organics ND mg/kg dry 50 03/07/18 19:57 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 107 % s: % 1 1,4-Difluorobenzene (Sur) 100 % s: % SS2-1.8 (A8C ) Matrix: Soil Batch: Gasoline Range Organics ND mg/kg dry 50 03/07/18 20:23 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 107 % s: % 1 1,4-Difluorobenzene (Sur) 101 % s: % SS1-1.5 (A8C ) Matrix: Soil Batch: Gasoline Range Organics ND mg/kg dry 50 03/07/18 20:50 Surrogate: 4-Bromofluorobenzene (Sur) Recovery: 105 % s: % 1 1,4-Difluorobenzene (Sur) 100 % s: % Method NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) Lisa Domenighini For Philip Nerenberg, Lab Director Page 5 of 44

38 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed Acetone ND ug/kg dry 50 03/07/18 19:57 Acrylonitrile ND Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon disulfide ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND Dibromochloromethane ND ,2-Dibromo-3-chloropropane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND Method 5035A/8260C Lisa Domenighini For Philip Nerenberg, Lab Director Page 6 of 44

39 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed cis-1,3-dichloropropene ND ug/kg dry 50 trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methylene chloride ND Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 105 % s: % 1 Toluene-d8 (Surr) 100 % s: % 4-Bromofluorobenzene (Surr) 98 % s: % Method 5035A/8260C Lisa Domenighini For Philip Nerenberg, Lab Director Page 7 of 44

40 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dilution SS2-1.8 (A8C ) Matrix: Soil Batch: Date Analyzed Acetone ND ug/kg dry 50 03/07/18 20:23 Acrylonitrile ND Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon disulfide ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND Dibromochloromethane ND ,2-Dibromo-3-chloropropane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND Method 5035A/8260C Lisa Domenighini For Philip Nerenberg, Lab Director Page 8 of 44

41 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dilution SS2-1.8 (A8C ) Matrix: Soil Batch: Date Analyzed cis-1,3-dichloropropene ND ug/kg dry 50 trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methylene chloride ND Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 106 % s: % 1 Toluene-d8 (Surr) 99 % s: % 4-Bromofluorobenzene (Surr) 99 % s: % Method 5035A/8260C Lisa Domenighini For Philip Nerenberg, Lab Director Page 9 of 44

42 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dilution SS1-1.5 (A8C ) Matrix: Soil Batch: Date Analyzed Acetone ND ug/kg dry 50 03/07/18 20:50 Acrylonitrile ND Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon disulfide ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND Dibromochloromethane ND ,2-Dibromo-3-chloropropane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND Method 5035A/8260C Lisa Domenighini For Philip Nerenberg, Lab Director Page 10 of 44

43 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dilution SS1-1.5 (A8C ) Matrix: Soil Batch: Date Analyzed cis-1,3-dichloropropene ND ug/kg dry 50 trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methylene chloride ND Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surrogate: 1,4-Difluorobenzene (Surr) Recovery: 105 % s: % 1 Toluene-d8 (Surr) 101 % s: % 4-Bromofluorobenzene (Surr) 98 % s: % Method 5035A/8260C Lisa Domenighini For Philip Nerenberg, Lab Director Page 11 of 44

44 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed Aroclor 1016 ND ug/kg dry 1 03/15/18 10:01 Aroclor 1221 ND Aroclor 1232 ND Aroclor 1242 ND Aroclor 1248 ND Aroclor 1254 ND Aroclor 1260 ND Surrogate: Decachlorobiphenyl (Surr) Recovery: 87 % s: % SS2-1.8 (A8C ) Matrix: Soil Batch: Aroclor 1016 ND ug/kg dry 1 03/15/18 10:38 Aroclor 1221 ND Aroclor 1232 ND Aroclor 1242 ND Aroclor 1248 ND Aroclor 1254 ND Aroclor 1260 ND Surrogate: Decachlorobiphenyl (Surr) Recovery: 95 % s: % SS1-1.5 (A8C ) Matrix: Soil Batch: Aroclor 1016 ND ug/kg dry 1 03/15/18 11:14 Aroclor 1221 ND Aroclor 1232 ND Aroclor 1242 ND Aroclor 1248 ND Aroclor 1254 ND Aroclor 1260 ND Surrogate: Decachlorobiphenyl (Surr) Recovery: 85 % s: % Method EPA 8082A EPA 8082A EPA 8082A C-07 C-07 C-07 Lisa Domenighini For Philip Nerenberg, Lab Director Page 12 of 44

45 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed Acenaphthene ND ug/kg dry 1 03/14/18 19:50 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 Dibenzofuran ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Methylnaphthalene ND Methylnaphthalene ND Naphthalene ND Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 70 % s: % p-terphenyl-d14 (Surr) 89 % s: % Method EPA 8270D (SIM) Lisa Domenighini For Philip Nerenberg, Lab Director Page 13 of 44

46 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte MDL Units Dilution SS2-1.8 (A8C ) Matrix: Soil Batch: Date Analyzed Acenaphthene ND ug/kg dry 1 03/14/18 20:17 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 Dibenzofuran ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Methylnaphthalene ND Methylnaphthalene ND Naphthalene ND Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 83 % s: % p-terphenyl-d14 (Surr) 100 % s: % Method EPA 8270D (SIM) Lisa Domenighini For Philip Nerenberg, Lab Director Page 14 of 44

47 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte MDL Units Dilution SS1-1.5 (A8C ) Matrix: Soil Batch: Date Analyzed Acenaphthene ND ug/kg dry 1 03/14/18 20:43 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 Dibenzofuran ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Methylnaphthalene ND Methylnaphthalene ND Naphthalene ND Phenanthrene ND Pyrene ND Surrogate: 2-Fluorobiphenyl (Surr) Recovery: 82 % s: % p-terphenyl-d14 (Surr) 105 % s: % Method EPA 8270D (SIM) Lisa Domenighini For Philip Nerenberg, Lab Director Page 15 of 44

48 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte MDL Units Dilution Date Analyzed Method SS1-1.0 (A8C ) Matrix: Soil Batch: Antimony ND mg/kg dry 10 03/24/18 19:27 EPA 6020A Arsenic Beryllium Cadmium Chromium Copper Lead Nickel Selenium J Silver ND Thallium ND Zinc SS1-1.0 (A8C RE1) Matrix: Soil Batch: Mercury ND mg/kg dry 10 03/27/18 18:43 EPA 6020A SS2-1.8 (A8C ) Matrix: Soil Batch: Antimony ND mg/kg dry 10 03/24/18 19:31 Arsenic Beryllium ND Cadmium ND Chromium Copper Lead Mercury ND Nickel Selenium ND Silver ND Thallium ND Zinc EPA 6020A SS1-1.5 (A8C ) Matrix: Soil Batch: Antimony ND mg/kg dry 10 03/24/18 19:35 Arsenic Beryllium ND EPA 6020A Lisa Domenighini For Philip Nerenberg, Lab Director Page 16 of 44

49 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte MDL Units Dilution Date Analyzed Method SS1-1.5 (A8C ) Matrix: Soil Cadmium mg/kg dry 10 EPA 6020A J Chromium Copper Lead Mercury ND Nickel Selenium ND Silver ND Thallium ND Zinc Lisa Domenighini For Philip Nerenberg, Lab Director Page 17 of 44

50 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Analyte MDL Units Dilution SS1-1.0 (A8C ) Matrix: Soil Batch: Date Analyzed Method % Solids % by Weight 1 03/09/18 08:20 EPA 8000C SS2-1.8 (A8C ) Matrix: Soil Batch: % Solids % by Weight 1 03/09/18 08:20 EPA 8000C SS1-1.5 (A8C ) Matrix: Soil Batch: % Solids % by Weight 1 03/09/18 08:20 EPA 8000C Lisa Domenighini For Philip Nerenberg, Lab Director Page 18 of 44

51 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3546 (Fuels) Blank ( BLK1) Prepared: 03/13/18 13:21 Analyzed: 03/13/18 20:43 NWTPH-Dx Diesel ND mg/kg wet Oil ND Mineral Oil ND Surr: o-terphenyl (Surr) Recovery: 93 % s: % Dilution: 1x LCS ( BS1) Prepared: 03/13/18 13:21 Analyzed: 03/13/18 21:04 NWTPH-Dx Diesel mg/kg wet Surr: o-terphenyl (Surr) Recovery: 96 % s: % Dilution: 1x Duplicate ( DUP1) Prepared: 03/13/18 13:21 Analyzed: 03/13/18 21:46 QC Source Sample: SS1-1.0 (A8C ) NWTPH-Dx Diesel ND mg/kg dry ND % Oil ND ND % Mineral Oil ND ND % Surr: o-terphenyl (Surr) Recovery: 80 % s: % Dilution: 1x Duplicate ( DUP2) Prepared: 03/13/18 18:42 Analyzed: 03/14/18 06:13 Soil QC Source Sample: Other (A8C ) NWTPH-Dx Diesel mg/kg dry % Oil ND ND % Mineral Oil ND ND % Surr: o-terphenyl (Surr) Recovery: 84 % s: % Dilution: 1x F-11, Q-17 Lisa Domenighini For Philip Nerenberg, Lab Director Page 19 of 44

52 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Blank ( BLK1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 15:03 NWTPH-Gx (MS) Gasoline Range Organics ND mg/kg wet Surr: 4-Bromofluorobenzene (Sur) Recovery: 101 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 99 % % LCS ( BS2) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 14:36 NWTPH-Gx (MS) Gasoline Range Organics mg/kg wet Surr: 4-Bromofluorobenzene (Sur) Recovery: 104 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 101 % % Duplicate ( DUP1) Prepared: 03/05/18 19:30 Analyzed: 03/07/18 16:23 V-15 Soil QC Source Sample: Other (A8C ) NWTPH-Gx (MS) Gasoline Range Organics mg/kg dry % Surr: 4-Bromofluorobenzene (Sur) Recovery: 105 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 100 % % F-03 Lisa Domenighini For Philip Nerenberg, Lab Director Page 20 of 44

53 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Soil Blank ( BLK1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 15: A/8260C Acetone ND ug/kg wet Acrylonitrile ND Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon disulfide ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND Dibromochloromethane ND ,2-Dibromo-3-chloropropane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND Lisa Domenighini For Philip Nerenberg, Lab Director Page 21 of 44

54 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Blank ( BLK1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 15: A/8260C 1,3-Dichloropropane ND ug/kg wet ,2-Dichloropropane ND ,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Ethylbenzene ND Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methylene chloride ND Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Naphthalene ND n-propylbenzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene (PCE) ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl chloride ND m,p-xylene ND o-xylene ND Surr: 1,4-Difluorobenzene (Surr) Recovery: 105 % s: % Dilution: 1x Toluene-d8 (Surr) 101 % % Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 22 of 44

55 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Blank ( BLK1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 15: A/8260C Surr: 4-Bromofluorobenzene (Surr) Recovery: 97 % s: % Dilution: 1x LCS ( BS1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 13: A/8260C Acetone ug/kg wet Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane Chlorotoluene Chlorotoluene Dibromochloromethane ,2-Dibromo-3-chloropropane ,2-Dibromoethane (EDB) Dibromomethane ,2-Dichlorobenzene ,3-Dichlorobenzene ,4-Dichlorobenzene Dichlorodifluoromethane ,1-Dichloroethane ,2-Dichloroethane (EDC) ,1-Dichloroethene Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 23 of 44

56 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Soil LCS ( BS1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 13: A/8260C cis-1,2-dichloroethene ug/kg wet trans-1,2-dichloroethene ,2-Dichloropropane ,3-Dichloropropane ,2-Dichloropropane ,1-Dichloropropene cis-1,3-dichloropropene trans-1,3-dichloropropene Ethylbenzene Hexachlorobutadiene Hexanone Isopropylbenzene Isopropyltoluene Methylene chloride Methyl-2-pentanone (MiBK) Methyl tert-butyl ether (MTBE) Naphthalene n-propylbenzene Styrene ,1,1,2-Tetrachloroethane ,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene ,2,3-Trichlorobenzene ,2,4-Trichlorobenzene ,1,1-Trichloroethane ,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane ,2,3-Trichloropropane ,2,4-Trimethylbenzene ,3,5-Trimethylbenzene Vinyl chloride m,p-xylene Lisa Domenighini For Philip Nerenberg, Lab Director Page 24 of 44

57 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A LCS ( BS1) Prepared: 03/07/18 10:30 Analyzed: 03/07/18 13: A/8260C o-xylene ug/kg wet Surr: 1,4-Difluorobenzene (Surr) Recovery: 105 % s: % Dilution: 1x Toluene-d8 (Surr) 102 % % 4-Bromofluorobenzene (Surr) 96 % % Duplicate ( DUP1) Prepared: 03/05/18 19:30 Analyzed: 03/07/18 16:23 V-15 QC Source Sample: Other (A8C ) 5035A/8260C Acetone ND ug/kg dry ND % Acrylonitrile ND ND % Benzene ND ND % Bromobenzene ND ND % Bromochloromethane ND ND % Bromodichloromethane ND ND % Bromoform ND ND % Bromomethane ND ND % 2-Butanone (MEK) ND ND % n-butylbenzene ND ND % sec-butylbenzene ND ND % tert-butylbenzene ND ND % Carbon disulfide ND ND % Carbon tetrachloride ND ND % Chlorobenzene ND ND % Chloroethane ND ND % Chloroform ND ND % Chloromethane ND ND % 2-Chlorotoluene ND ND % 4-Chlorotoluene ND ND % Dibromochloromethane ND ND % 1,2-Dibromo-3-chloropropane ND ND % 1,2-Dibromoethane (EDB) ND ND % Dibromomethane ND ND % 1,2-Dichlorobenzene ND ND % 1,3-Dichlorobenzene ND ND % Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 25 of 44

58 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Duplicate ( DUP1) Prepared: 03/05/18 19:30 Analyzed: 03/07/18 16:23 V-15 QC Source Sample: Other (A8C ) 5035A/8260C 1,4-Dichlorobenzene ND ug/kg dry --- ND % Dichlorodifluoromethane ND ND % 1,1-Dichloroethane ND ND % 1,2-Dichloroethane (EDC) ND ND % 1,1-Dichloroethene ND ND % cis-1,2-dichloroethene ND ND % trans-1,2-dichloroethene ND ND % 1,2-Dichloropropane ND ND % 1,3-Dichloropropane ND ND % 2,2-Dichloropropane ND ND % 1,1-Dichloropropene ND ND % cis-1,3-dichloropropene ND ND % trans-1,3-dichloropropene ND ND % Ethylbenzene % Hexachlorobutadiene ND ND % 2-Hexanone ND ND % Isopropylbenzene ND ND % 4-Isopropyltoluene ND ND % Methylene chloride ND ND % 4-Methyl-2-pentanone (MiBK) ND ND % Methyl tert-butyl ether (MTBE) ND ND % Naphthalene % n-propylbenzene ND ND % Styrene ND ND % 1,1,1,2-Tetrachloroethane ND ND % 1,1,2,2-Tetrachloroethane ND ND % Tetrachloroethene (PCE) ND ND % Toluene ND ND % 1,2,3-Trichlorobenzene ND ND % 1,2,4-Trichlorobenzene ND ND % 1,1,1-Trichloroethane ND ND % 1,1,2-Trichloroethane ND ND % Trichloroethene (TCE) ND ND % Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 26 of 44

59 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Duplicate ( DUP1) Prepared: 03/05/18 19:30 Analyzed: 03/07/18 16:23 V-15 QC Source Sample: Other (A8C ) 5035A/8260C Trichlorofluoromethane ND ug/kg dry --- ND % 1,2,3-Trichloropropane ND ND % 1,2,4-Trimethylbenzene % 1,3,5-Trimethylbenzene % Vinyl chloride ND ND % m,p-xylene % o-xylene % Surr: 1,4-Difluorobenzene (Surr) Recovery: 105 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 97 % % Matrix Spike ( MS1) Prepared: 03/07/18 13:30 Analyzed: 03/07/18 18:10 V-16 QC Source Sample: Other (A8C ) 5035A/8260C Acetone ug/kg wet ND Acrylonitrile ND Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND n-butylbenzene ND sec-butylbenzene ND tert-butylbenzene ND Carbon disulfide ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Soil J J J Lisa Domenighini For Philip Nerenberg, Lab Director Page 27 of 44

60 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Matrix Spike ( MS1) Prepared: 03/07/18 13:30 Analyzed: 03/07/18 18:10 V-16 QC Source Sample: Other (A8C ) 5035A/8260C 4-Chlorotoluene ug/kg wet ND Dibromochloromethane ND ,2-Dibromo-3-chloropropane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (EDC) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND ,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Ethylbenzene Hexachlorobutadiene ND Hexanone ND Isopropylbenzene ND Isopropyltoluene ND Methylene chloride ND Methyl-2-pentanone (MiBK) ND Methyl tert-butyl ether (MTBE) ND Naphthalene n-propylbenzene Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Soil E, Q-03 Lisa Domenighini For Philip Nerenberg, Lab Director Page 28 of 44

61 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 5035A Matrix Spike ( MS1) Prepared: 03/07/18 13:30 Analyzed: 03/07/18 18:10 V-16 QC Source Sample: Other (A8C ) 5035A/8260C Tetrachloroethene (PCE) ug/kg wet ND Toluene ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene (TCE) ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ,3,5-Trimethylbenzene Vinyl chloride ND m,p-xylene o-xylene Surr: 1,4-Difluorobenzene (Surr) Recovery: 105 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 97 % % Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 29 of 44

62 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3546 Blank ( BLK1) Prepared: 03/13/18 13:43 Analyzed: 03/14/18 17:03 C-07 EPA 8082A Aroclor 1016 ND ug/kg wet Aroclor 1221 ND Aroclor 1232 ND Aroclor 1242 ND Aroclor 1248 ND Aroclor 1254 ND Aroclor 1260 ND Surr: Decachlorobiphenyl (Surr) Recovery: 89 % s: % Dilution: 1x LCS ( BS1) Prepared: 03/13/18 13:43 Analyzed: 03/14/18 17:22 C-07 EPA 8082A Aroclor ug/kg wet Aroclor Surr: Decachlorobiphenyl (Surr) Recovery: 87 % s: % Dilution: 1x Duplicate ( DUP1) Prepared: 03/13/18 13:43 Analyzed: 03/14/18 17:40 C-07 QC Source Sample: Other (A8C ) EPA 8082A Aroclor 1016 ND ug/kg dry ND % Aroclor 1221 ND ND % Aroclor 1232 ND ND % Aroclor 1242 ND ND % Aroclor 1248 ND ND % Aroclor 1254 ND ND % Aroclor 1260 ND ND % Surr: Decachlorobiphenyl (Surr) Recovery: 67 % s: % Dilution: 1x Matrix Spike ( MS1) Prepared: 03/13/18 13:43 Analyzed: 03/15/18 10:38 C-07 QC Source Sample: Other (A8C ) EPA 8082A Aroclor ug/kg dry ND Aroclor Surr: Decachlorobiphenyl (Surr) Recovery: 60 % s: % Dilution: 1x Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 30 of 44

63 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3546 Blank ( BLK1) Prepared: 03/14/18 10:56 Analyzed: 03/14/18 14:59 EPA 8270D (SIM) Acenaphthene ND ug/kg wet 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 Dibenzofuran ND Fluoranthene ND Fluorene ND Indeno(1,2,3-cd)pyrene ND Methylnaphthalene ND Methylnaphthalene ND Naphthalene ND Phenanthrene ND Pyrene ND Surr: 2-Fluorobiphenyl (Surr) Recovery: 72 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 93 % % LCS ( BS1) Prepared: 03/14/18 10:56 Analyzed: 03/14/18 15:25 EPA 8270D (SIM) Acenaphthene ug/kg wet Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 31 of 44

64 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3546 LCS ( BS1) Prepared: 03/14/18 10:56 Analyzed: 03/14/18 15:25 EPA 8270D (SIM) Fluoranthene ug/kg wet Fluorene Indeno(1,2,3-cd)pyrene Methylnaphthalene Methylnaphthalene Naphthalene Phenanthrene Pyrene Surr: 2-Fluorobiphenyl (Surr) Recovery: 65 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 96 % % Duplicate ( DUP1) Prepared: 03/14/18 10:56 Analyzed: 03/14/18 23:21 Soil QC Source Sample: Other (A8C ) EPA 8270D (SIM) Acenaphthene ND ug/kg dry ND % Acenaphthylene % Anthracene ND ND % Benz(a)anthracene % Benzo(a)pyrene % Benzo(b)fluoranthene % Benzo(k)fluoranthene % Benzo(g,h,i)perylene % Chrysene % Dibenz(a,h)anthracene % Dibenzofuran ND ND % Fluoranthene % Fluorene ND ND % Indeno(1,2,3-cd)pyrene % 1-Methylnaphthalene ND ND % 2-Methylnaphthalene ND ND % Naphthalene ND ND % Phenanthrene % Pyrene % Surr: 2-Fluorobiphenyl (Surr) Recovery: 77 % s: % Dilution: 5x M-05 M-05 M-05 M-05 J Lisa Domenighini For Philip Nerenberg, Lab Director Page 32 of 44

65 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3546 Duplicate ( DUP1) Prepared: 03/14/18 10:56 Analyzed: 03/14/18 23:21 QC Source Sample: Other (A8C ) EPA 8270D (SIM) Surr: p-terphenyl-d14 (Surr) Recovery: 99 % s: % Dilution: 5x Matrix Spike ( MS1) Prepared: 03/14/18 10:56 Analyzed: 03/14/18 23:47 QC Source Sample: Other (A8C ) EPA 8270D (SIM) Acenaphthene ug/kg dry ND Acenaphthylene Anthracene ND Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran ND Fluoranthene Fluorene ND Indeno(1,2,3-cd)pyrene Methylnaphthalene ND Methylnaphthalene ND Naphthalene ND Phenanthrene Pyrene Surr: 2-Fluorobiphenyl (Surr) Recovery: 78 % s: % Dilution: 5x p-terphenyl-d14 (Surr) 99 % % Soil Lisa Domenighini For Philip Nerenberg, Lab Director Page 33 of 44

66 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3051A Soil Blank ( BLK1) Prepared: 03/23/18 11:42 Analyzed: 03/24/18 19:17 EPA 6020A Antimony ND mg/kg wet Arsenic ND Beryllium ND Cadmium ND Chromium ND Copper ND Lead ND Mercury ND Nickel ND Selenium ND Silver ND Thallium ND Zinc ND LCS ( BS1) Prepared: 03/23/18 11:42 Analyzed: 03/24/18 19:20 EPA 6020A Antimony mg/kg wet Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Selenium Silver Thallium Zinc Duplicate ( DUP1) Prepared: 03/23/18 11:42 Analyzed: 03/24/18 19:52 QC Source Sample: Other (A8C ) EPA 6020A Antimony ND mg/kg dry ND % Arsenic % Lisa Domenighini For Philip Nerenberg, Lab Director Page 34 of 44

67 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3051A Soil Duplicate ( DUP1) Prepared: 03/23/18 11:42 Analyzed: 03/24/18 19:52 QC Source Sample: Other (A8C ) EPA 6020A Beryllium mg/kg dry % Cadmium % Chromium % Copper % Lead % Mercury % Nickel % Selenium ND ND % Silver ND ND % Thallium ND ND % Zinc % Q-04 J Matrix Spike ( MS1) Prepared: 03/23/18 11:42 Analyzed: 03/26/18 18:32 QC Source Sample: Other (A8C ) EPA 6020A Antimony mg/kg dry ND Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Selenium ND Silver ND Thallium ND Zinc Q-03 Matrix Spike ( MS2) Prepared: 03/23/18 11:42 Analyzed: 03/24/18 20:49 QC Source Sample: Other (A8C ) EPA 6020A Antimony mg/kg dry ND Lisa Domenighini For Philip Nerenberg, Lab Director Page 35 of 44

68 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3051A Soil Matrix Spike ( MS2) Prepared: 03/23/18 11:42 Analyzed: 03/24/18 20:49 QC Source Sample: Other (A8C ) EPA 6020A Arsenic mg/kg dry Beryllium Cadmium Chromium Copper Lead Mercury ND Nickel Selenium ND Silver ND Thallium ND Zinc Q-04 Lisa Domenighini For Philip Nerenberg, Lab Director Page 36 of 44

69 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch EPA 3051A Soil Blank ( BLK1) Prepared: 03/27/18 13:14 Analyzed: 03/27/18 18:32 EPA 6020A Mercury ND mg/kg wet LCS ( BS1) Prepared: 03/27/18 13:14 Analyzed: 03/27/18 18:38 EPA 6020A Mercury mg/kg wet Duplicate ( DUP1) Prepared: 03/27/18 13:14 Analyzed: 03/27/18 19:02 QC Source Sample: Other (A8C ) EPA 6020A Mercury ND mg/kg dry ND % Matrix Spike ( MS1) Prepared: 03/27/18 13:14 Analyzed: 03/27/18 19:06 QC Source Sample: Other (A8C ) EPA 6020A Mercury mg/kg dry ND Lisa Domenighini For Philip Nerenberg, Lab Director Page 37 of 44

70 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 QUALITY CONTROL (QC) SAMPLE RESULTS Percent Dry Weight Analyte MDL Units Dil. Spike Amount Source %REC %REC s Batch Total Solids (Dry Weight) Soil Duplicate ( DUP1) Prepared: 03/08/18 12:45 Analyzed: 03/09/18 08:20 QC Source Sample: Other (A8B ) EPA 8000C % Solids % by Weight % Duplicate ( DUP2) Prepared: 03/08/18 12:45 Analyzed: 03/09/18 08:20 QC Source Sample: Other (A8C ) EPA 8000C % Solids % by Weight % Duplicate ( DUP3) Prepared: 03/08/18 12:45 Analyzed: 03/09/18 08:20 QC Source Sample: Other (A8C ) EPA 8000C % Solids % by Weight % Duplicate ( DUP4) Prepared: 03/08/18 12:45 Analyzed: 03/09/18 08:20 QC Source Sample: Other (A8C ) EPA 8000C % Solids % by Weight % Duplicate ( DUP5) Prepared: 03/08/18 19:46 Analyzed: 03/09/18 08:20 QC Source Sample: Other (A8C ) EPA 8000C % Solids % by Weight % Duplicate ( DUP6) Prepared: 03/08/18 19:46 Analyzed: 03/09/18 08:20 QC Source Sample: Other (A8C ) EPA 8000C % Solids % by Weight % Lisa Domenighini For Philip Nerenberg, Lab Director Page 38 of 44

71 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 SAMPLE PREPARATION INFORMATION Diesel and/or Oil Hydrocarbons by NWTPH-Dx Prep: EPA 3546 (Fuels) Sample Default RL Prep Lab Number Batch: Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8C Soil NWTPH-Dx 03/07/18 10:55 03/13/18 13: g/5mL 10g/5mL 0.93 A8C Soil NWTPH-Dx 03/07/18 13:18 03/13/18 13: g/5mL 10g/5mL 0.98 A8C Soil NWTPH-Dx 03/07/18 11:55 03/13/18 13: g/5mL 10g/5mL 0.94 Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Prep: EPA 5035A Sample Default RL Prep Lab Number Batch: Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8C Soil NWTPH-Gx (MS) 03/07/18 10:55 03/07/18 10: g/5mL 5g/5mL 0.94 A8C Soil NWTPH-Gx (MS) 03/07/18 13:18 03/07/18 13: g/5mL 5g/5mL 0.88 A8C Soil NWTPH-Gx (MS) 03/07/18 11:55 03/07/18 11: g/5mL 5g/5mL 0.77 Volatile Organic Compounds by EPA 5035A/8260C Prep: EPA 5035A Sample Default RL Prep Lab Number Batch: Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8C Soil 5035A/8260C 03/07/18 10:55 03/07/18 10: g/5mL 5g/5mL 0.94 A8C Soil 5035A/8260C 03/07/18 13:18 03/07/18 13: g/5mL 5g/5mL 0.88 A8C Soil 5035A/8260C 03/07/18 11:55 03/07/18 11: g/5mL 5g/5mL 0.77 Polychlorinated Biphenyls by EPA 8082A Prep: EPA 3546 Sample Default RL Prep Lab Number Batch: Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8C Soil EPA 8082A 03/07/18 10:55 03/13/18 13: g/5mL 10g/5mL 0.97 A8C Soil EPA 8082A 03/07/18 13:18 03/13/18 13: g/5mL 10g/5mL 0.97 A8C Soil EPA 8082A 03/07/18 11:55 03/13/18 13: g/5mL 10g/5mL 0.96 Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Prep: EPA 3546 Lab Number Sample Default RL Prep Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Lisa Domenighini For Philip Nerenberg, Lab Director Page 39 of 44

72 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 SAMPLE PREPARATION INFORMATION Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Prep: EPA 3546 Sample Default RL Prep Lab Number Batch: Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8C Soil EPA 8270D (SIM) 03/07/18 10:55 03/14/18 10: g/5mL 10g/5mL 0.89 A8C Soil EPA 8270D (SIM) 03/07/18 13:18 03/14/18 10: g/5mL 10g/5mL 0.98 A8C Soil EPA 8270D (SIM) 03/07/18 11:55 03/14/18 10: g/5mL 10g/5mL 0.96 Prep: EPA 3051A Lab Number Total Metals by EPA 6020 (ICPMS) Sample Default RL Prep Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Batch: A8C Soil EPA 6020A 03/07/18 10:55 03/23/18 11: g/50mL 0.5g/50mL 1.01 A8C Soil EPA 6020A 03/07/18 13:18 03/23/18 11: g/50mL 0.5g/50mL 1.08 A8C Soil EPA 6020A 03/07/18 11:55 03/23/18 11: g/50mL 0.5g/50mL 1.04 Batch: A8C RE1Soil EPA 6020A 03/07/18 10:55 03/27/18 13: g/50mL 0.5g/50mL 1.08 Percent Dry Weight Prep: Total Solids (Dry Weight) Sample Default RL Prep Lab Number Batch: Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8C Soil EPA 8000C 03/07/18 10:55 03/08/18 12:45 1N/A/1N/A 1N/A/1N/A NA A8C Soil EPA 8000C 03/07/18 13:18 03/08/18 12:45 1N/A/1N/A 1N/A/1N/A NA A8C Soil EPA 8000C 03/07/18 11:55 03/08/18 12:45 1N/A/1N/A 1N/A/1N/A NA Lisa Domenighini For Philip Nerenberg, Lab Director Page 40 of 44

73 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 Qualifiers: and Definitions C-07 Extract has undergone Sulfuric Acid Cleanup by EPA 3665A, Sulfur Cleanup by EPA 3660B, and Florisil Cleanup by EPA 3620B in order to minimize matrix interference. E Estimated Value. The result is above the calibration range of the instrument. F-03 The result for this hydrocarbon range is elevated due to the presence of individual analyte peaks in the quantitation range that are not representative of the fuel pattern reported. F-11 The hydrocarbon pattern indicates possible weathered diesel, or a contribution from a related component. J Estimated. detected below the lowest point of the calibration curve, but above the specified MDL. M-05 Estimated results. Peak separation for structural isomers is insufficient for accurate quantification. Q-03 Spike recovery and/or is outside control limits due to the high concentration of analyte present in the sample. Q-04 Spike recovery and/or is outside control limits due to a non-homogeneous sample matrix. Q-17 between original and duplicate sample is outside of established control limits. V-15 Sample aliquot was subsampled from the sample container. The subsampled aliquot was preserved in the laboratory within 48 hours of sampling. V-16 Sample aliquot was subsampled from the sample container in the laboratory. The subsampled aliquot was not preserved within 48 hours of sampling. and Conventions: DET ND NR dry MDL WMSC Batch QC Blank Policy Analyte DETECTED Analyte NOT DETECTED at or above the reporting limit Not Reported Sample results reported on a dry weight basis. s listed as 'wet' or without 'dry'designation are not dry weight corrected. Relative Percent Difference If MDL is not listed, data has been evaluated to the Method only. Water Miscible Solvent Correction has been applied to s and MRLs for volatiles soil samples per EPA 8000C. In cases where there is insufficient sample provided for Sample Duplicates and/or Matrix Spikes, a Lab Control Sample Duplicate (LCS Dup) is analyzed to demonstrate accuracy and precision of the extraction and analysis. Apex assesses blank data for potential high bias down to a level equal to ½ the method reporting limit (MRL), except for conventional chemistry and HCID analyses which are assessed only to the MRL. Sample results flagged with a B or B-02 qualifier are potentially biased high if they are less than ten times the level found in the blank for inorganic analyses or less than five times the level found in the blank for organic analyses. For accurate comparison of volatile results to the level found in the blank; water sample results should be divided by the dilution factor, and soil sample results should be divided by 1/50 of the sample dilution to account for the sample prep factor. s qualified as reported below the MRL may include a potential high bias if associated with a B or B-02 qualified blank. B and B-02 qualifications are not applied to J qualified results reported below the MRL. Lisa Domenighini For Philip Nerenberg, Lab Director Page 41 of 44

74 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10: QC results are not applicable. For example, % Recoveries for Blanks and Duplicates, % for Blanks, Blank Spikes and Matrix Spikes, etc. *** Used to indicate a possible discrepancy with the Sample and Sample Duplicate results when the % is not available. In this case, either the Sample or the Sample Duplicate has a reportable result for this analyte, while the other is Non Detect (ND). Lisa Domenighini For Philip Nerenberg, Lab Director Page 42 of 44

75 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 Lisa Domenighini For Philip Nerenberg, Lab Director Page 43 of 44

76 Apex Labs AMENDED REPORT Phone Fax Project: Devil's Lake Lincoln City Project Number: Reported: Portland, OR Project Manager: Merideth D'Andrea 04/04/18 10:20 Lisa Domenighini For Philip Nerenberg, Lab Director Page 44 of 44

77 , LLC EPA ID: OR01039 Thursday, July 12, 2018 Merideth D'Andrea Portland, OR RE: A8F Devil's Lake Lincoln City Thank you for using. We greatly appreciate your business and strive to provide the highest quality services to the environmental industry. Enclosed are the results of analyses for work order A8F0979, which was received by the laboratory on 6/29/2018 at 11:01:00AM. 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 This Final Report is the official version of the data results for this sample submission, unless superseded by a subsequent, labeled amended report. All other deliverables derived from this data, including Electronic Data Deliverables (EDDs), CLP-like forms, client requested summary sheets, and all other products are considered secondary to this report. Philip Nerenberg, Lab Director Page 1 of 73

78 , LLC EPA ID: OR01039 Project: Devil's Lake Lincoln City Portland, OR Project Number: Project Manager: Merideth D'Andrea Report ID: A8F ANALYTICAL REPORT FOR SAMPLES SAMPLE INFORMATION Client Sample ID Laboratory ID Matrix Date Sampled Date Received HA GW HA A8F Soil 06/28/18 13:00 06/29/18 11:01 A8F Water 06/28/18 14:30 06/29/18 11:01 A8F Soil 06/28/18 15:00 06/29/18 11:01 Philip Nerenberg, Lab Director Page 2 of 73

79 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: Diesel mg/kg dry 1 07/07/18 NWTPH-Dx F-17 Oil ND mg/kg dry 1 07/07/18 NWTPH-Dx Surrogate: o-terphenyl (Surr) Recovery: 91 % s: % 1 07/07/18 GW (A8F ) Matrix: Water Batch: NWTPH-Dx Diesel ND mg/l 1 07/02/18 NWTPH-Dx Oil ND mg/l 1 07/02/18 NWTPH-Dx Surrogate: o-terphenyl (Surr) Recovery: 82 % s: % 1 07/02/18 HA (A8F ) Matrix: Soil Batch: NWTPH-Dx Diesel ND mg/kg dry 1 07/07/18 NWTPH-Dx Oil ND mg/kg dry 1 07/07/18 NWTPH-Dx Surrogate: o-terphenyl (Surr) Recovery: 86 % s: % 1 07/07/18 NWTPH-Dx Philip Nerenberg, Lab Director Page 3 of 73

80 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: Gasoline Range Organics ND mg/kg dry 50 07/02/18 NWTPH-Gx (MS) Surrogate: 4-Bromofluorobenzene (Sur) 1,4-Difluorobenzene (Sur) Recovery: 103 % 95 % s: % 1 07/02/ % 1 07/02/18 NWTPH-Gx (MS) NWTPH-Gx (MS) GW (A8F RE1) Matrix: Water Batch: V-01, V-04 Gasoline Range Organics ND mg/l 1 07/02/18 NWTPH-Gx (MS) Surrogate: 4-Bromofluorobenzene (Sur) 1,4-Difluorobenzene (Sur) Recovery: 97 % s: % 1 07/02/ % 1 07/02/18 HA (A8F ) Matrix: Soil Batch: Gasoline Range Organics 33.2 Surrogate: 4-Bromofluorobenzene (Sur) 1,4-Difluorobenzene (Sur) 102 % Recovery: 106 % 95 % mg/kg dry 50 07/02/18 s: % 1 07/02/ % 1 07/02/18 NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) NWTPH-Gx (MS) Philip Nerenberg, Lab Director Page 4 of 73

81 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Sample Detection Date Units Dilution Analyzed Method Ref. GW (A8F RE1) Matrix: Water Batch: V-01, V-04 Acetone ND ug/l 1 07/02/18 EPA 8260C Acrylonitrile ND ug/l 1 07/02/18 EPA 8260C Benzene ND ug/l 1 07/02/18 EPA 8260C Bromobenzene ND ug/l 1 07/02/18 EPA 8260C Bromochloromethane ND ug/l 1 07/02/18 EPA 8260C Bromodichloromethane ND ug/l 1 07/02/18 EPA 8260C Bromoform ND ug/l 1 07/02/18 EPA 8260C Bromomethane ND ug/l 1 07/02/18 EPA 8260C 2-Butanone (MEK) ND ug/l 1 07/02/18 EPA 8260C n-butylbenzene ND ug/l 1 07/02/18 EPA 8260C sec-butylbenzene ND ug/l 1 07/02/18 EPA 8260C tert-butylbenzene ND ug/l 1 07/02/18 EPA 8260C Carbon disulfide ND ug/l 1 07/02/18 EPA 8260C Carbon tetrachloride ND ug/l 1 07/02/18 EPA 8260C Chlorobenzene ND ug/l 1 07/02/18 EPA 8260C Chloroethane ND ug/l 1 07/02/18 EPA 8260C Chloroform ND ug/l 1 07/02/18 EPA 8260C Chloromethane ND ug/l 1 07/02/18 EPA 8260C 2-Chlorotoluene ND ug/l 1 07/02/18 EPA 8260C 4-Chlorotoluene ND ug/l 1 07/02/18 EPA 8260C Dibromochloromethane ND ug/l 1 07/02/18 EPA 8260C 1,2-Dibromo-3-chloropropane ND ug/l 1 07/02/18 EPA 8260C 1,2-Dibromoethane (EDB) ND ug/l 1 07/02/18 EPA 8260C Dibromomethane ND ug/l 1 07/02/18 EPA 8260C 1,2-Dichlorobenzene ND ug/l 1 07/02/18 EPA 8260C 1,3-Dichlorobenzene ND ug/l 1 07/02/18 EPA 8260C 1,4-Dichlorobenzene ND ug/l 1 07/02/18 EPA 8260C Dichlorodifluoromethane ND ug/l 1 07/02/18 EPA 8260C 1,1-Dichloroethane ND ug/l 1 07/02/18 EPA 8260C 1,2-Dichloroethane (EDC) ND ug/l 1 07/02/18 EPA 8260C 1,1-Dichloroethene ND ug/l 1 07/02/18 EPA 8260C cis-1,2-dichloroethene ND ug/l 1 07/02/18 EPA 8260C trans-1,2-dichloroethene ND ug/l 1 07/02/18 EPA 8260C 1,2-Dichloropropane ND ug/l 1 07/02/18 EPA 8260C 1,3-Dichloropropane ND ug/l 1 07/02/18 EPA 8260C 2,2-Dichloropropane ND ug/l 1 07/02/18 EPA 8260C Philip Nerenberg, Lab Director Page 5 of 73

82 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Sample Detection Date Units Dilution Analyzed Method Ref. GW (A8F RE1) Matrix: Water Batch: V-01, V-04 1,1-Dichloropropene ND ug/l 1 07/02/18 EPA 8260C cis-1,3-dichloropropene ND ug/l 1 07/02/18 EPA 8260C trans-1,3-dichloropropene ND ug/l 1 07/02/18 EPA 8260C Ethylbenzene ND ug/l 1 07/02/18 EPA 8260C Hexachlorobutadiene ND ug/l 1 07/02/18 EPA 8260C 2-Hexanone ND ug/l 1 07/02/18 EPA 8260C Isopropylbenzene ND ug/l 1 07/02/18 EPA 8260C 4-Isopropyltoluene ND ug/l 1 07/02/18 EPA 8260C Methylene chloride ND ug/l 1 07/02/18 EPA 8260C 4-Methyl-2-pentanone (MiBK) ND ug/l 1 07/02/18 EPA 8260C Methyl tert-butyl ether (MTBE) ND ug/l 1 07/02/18 EPA 8260C Naphthalene ND ug/l 1 07/02/18 EPA 8260C n-propylbenzene ND ug/l 1 07/02/18 EPA 8260C Styrene ND ug/l 1 07/02/18 EPA 8260C 1,1,1,2-Tetrachloroethane ND ug/l 1 07/02/18 EPA 8260C 1,1,2,2-Tetrachloroethane ND ug/l 1 07/02/18 EPA 8260C Tetrachloroethene (PCE) ND ug/l 1 07/02/18 EPA 8260C Toluene ND ug/l 1 07/02/18 EPA 8260C 1,2,3-Trichlorobenzene ND ug/l 1 07/02/18 EPA 8260C 1,2,4-Trichlorobenzene ND ug/l 1 07/02/18 EPA 8260C 1,1,1-Trichloroethane ND ug/l 1 07/02/18 EPA 8260C 1,1,2-Trichloroethane ND ug/l 1 07/02/18 EPA 8260C Trichloroethene (TCE) ND ug/l 1 07/02/18 EPA 8260C Trichlorofluoromethane ND ug/l 1 07/02/18 EPA 8260C 1,2,3-Trichloropropane ND ug/l 1 07/02/18 EPA 8260C 1,2,4-Trimethylbenzene ND ug/l 1 07/02/18 EPA 8260C 1,3,5-Trimethylbenzene ND ug/l 1 07/02/18 EPA 8260C Vinyl chloride ND ug/l 1 07/02/18 EPA 8260C m,p-xylene ND ug/l 1 07/02/18 EPA 8260C o-xylene ND ug/l 1 07/02/18 EPA 8260C Surrogate: 1,4-Difluorobenzene (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Recovery: 104 % 100 % 99 % s: % 1 07/02/ % 1 07/02/ % 1 07/02/18 EPA 8260C EPA 8260C EPA 8260C Philip Nerenberg, Lab Director Page 6 of 73

83 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: Acetone ND ug/kg dry 50 07/02/ A/8260C Acrylonitrile ND ug/kg dry 50 07/02/ A/8260C Benzene ND ug/kg dry 50 07/02/ A/8260C Bromobenzene ND ug/kg dry 50 07/02/ A/8260C Bromochloromethane ND ug/kg dry 50 07/02/ A/8260C Bromodichloromethane ND ug/kg dry 50 07/02/ A/8260C Bromoform ND ug/kg dry 50 07/02/ A/8260C Bromomethane ND ug/kg dry 50 07/02/ A/8260C 2-Butanone (MEK) ND ug/kg dry 50 07/02/ A/8260C n-butylbenzene ND ug/kg dry 50 07/02/ A/8260C sec-butylbenzene ND ug/kg dry 50 07/02/ A/8260C tert-butylbenzene ND ug/kg dry 50 07/02/ A/8260C Carbon disulfide ND ug/kg dry 50 07/02/ A/8260C Carbon tetrachloride ND ug/kg dry 50 07/02/ A/8260C Chlorobenzene ND ug/kg dry 50 07/02/ A/8260C Chloroethane ND ug/kg dry 50 07/02/ A/8260C Chloroform ND ug/kg dry 50 07/02/ A/8260C Chloromethane ND ug/kg dry 50 07/02/ A/8260C 2-Chlorotoluene ND ug/kg dry 50 07/02/ A/8260C 4-Chlorotoluene ND ug/kg dry 50 07/02/ A/8260C Dibromochloromethane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dibromo-3-chloropropane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dibromoethane (EDB) ND ug/kg dry 50 07/02/ A/8260C Dibromomethane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,3-Dichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,4-Dichlorobenzene ND ug/kg dry 50 07/02/ A/8260C Dichlorodifluoromethane ND ug/kg dry 50 07/02/ A/8260C 1,1-Dichloroethane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dichloroethane (EDC) ND ug/kg dry 50 07/02/ A/8260C 1,1-Dichloroethene ND ug/kg dry 50 07/02/ A/8260C cis-1,2-dichloroethene ND ug/kg dry 50 07/02/ A/8260C trans-1,2-dichloroethene ND ug/kg dry 50 07/02/ A/8260C 1,2-Dichloropropane ND ug/kg dry 50 07/02/ A/8260C 1,3-Dichloropropane ND ug/kg dry 50 07/02/ A/8260C 2,2-Dichloropropane ND ug/kg dry 50 07/02/ A/8260C Philip Nerenberg, Lab Director Page 7 of 73

84 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: ,1-Dichloropropene ND ug/kg dry 50 07/02/ A/8260C cis-1,3-dichloropropene ND ug/kg dry 50 07/02/ A/8260C trans-1,3-dichloropropene ND ug/kg dry 50 07/02/ A/8260C Ethylbenzene ND ug/kg dry 50 07/02/ A/8260C Hexachlorobutadiene ND ug/kg dry 50 07/02/ A/8260C 2-Hexanone ND ug/kg dry 50 07/02/ A/8260C Isopropylbenzene ND ug/kg dry 50 07/02/ A/8260C 4-Isopropyltoluene ND ug/kg dry 50 07/02/ A/8260C Methylene chloride ND ug/kg dry 50 07/02/ A/8260C 4-Methyl-2-pentanone (MiBK) ND ug/kg dry 50 07/02/ A/8260C Methyl tert-butyl ether (MTBE) ND ug/kg dry 50 07/02/ A/8260C Naphthalene ND ug/kg dry 50 07/02/ A/8260C n-propylbenzene ND ug/kg dry 50 07/02/ A/8260C Styrene ND ug/kg dry 50 07/02/ A/8260C 1,1,1,2-Tetrachloroethane ND ug/kg dry 50 07/02/ A/8260C 1,1,2,2-Tetrachloroethane ND ug/kg dry 50 07/02/ A/8260C Tetrachloroethene (PCE) ND ug/kg dry 50 07/02/ A/8260C Toluene ND ug/kg dry 50 07/02/ A/8260C 1,2,3-Trichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,2,4-Trichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,1,1-Trichloroethane ND ug/kg dry 50 07/02/ A/8260C 1,1,2-Trichloroethane ND ug/kg dry 50 07/02/ A/8260C Trichloroethene (TCE) ND ug/kg dry 50 07/02/ A/8260C Trichlorofluoromethane ND ug/kg dry 50 07/02/ A/8260C 1,2,3-Trichloropropane ND ug/kg dry 50 07/02/ A/8260C 1,2,4-Trimethylbenzene ND ug/kg dry 50 07/02/ A/8260C 1,3,5-Trimethylbenzene ND ug/kg dry 50 07/02/ A/8260C Vinyl chloride ND ug/kg dry 50 07/02/ A/8260C m,p-xylene ND ug/kg dry 50 07/02/ A/8260C o-xylene ND ug/kg dry 50 07/02/ A/8260C Surrogate: 1,4-Difluorobenzene (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Recovery: 99 % 99 % 103 % s: % 1 07/02/ % 1 07/02/ % 1 07/02/18 HA (A8F ) Matrix: Soil Batch: A/8260C 5035A/8260C 5035A/8260C Acetone ND ug/kg dry 50 07/02/ A/8260C Acrylonitrile ND ug/kg dry 50 07/02/ A/8260C Philip Nerenberg, Lab Director Page 8 of 73

85 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: Benzene ND ug/kg dry 50 07/02/ A/8260C Bromobenzene ND ug/kg dry 50 07/02/ A/8260C Bromochloromethane ND ug/kg dry 50 07/02/ A/8260C Bromodichloromethane ND ug/kg dry 50 07/02/ A/8260C Bromoform ND ug/kg dry 50 07/02/ A/8260C Bromomethane ND ug/kg dry 50 07/02/ A/8260C 2-Butanone (MEK) ND ug/kg dry 50 07/02/ A/8260C n-butylbenzene ND ug/kg dry 50 07/02/ A/8260C sec-butylbenzene ND ug/kg dry 50 07/02/ A/8260C tert-butylbenzene ND ug/kg dry 50 07/02/ A/8260C Carbon disulfide ND ug/kg dry 50 07/02/ A/8260C Carbon tetrachloride ND ug/kg dry 50 07/02/ A/8260C Chlorobenzene ND ug/kg dry 50 07/02/ A/8260C Chloroethane ND ug/kg dry 50 07/02/ A/8260C Chloroform ND ug/kg dry 50 07/02/ A/8260C Chloromethane ND ug/kg dry 50 07/02/ A/8260C 2-Chlorotoluene ND ug/kg dry 50 07/02/ A/8260C 4-Chlorotoluene ND ug/kg dry 50 07/02/ A/8260C Dibromochloromethane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dibromo-3-chloropropane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dibromoethane (EDB) ND ug/kg dry 50 07/02/ A/8260C Dibromomethane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,3-Dichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,4-Dichlorobenzene ND ug/kg dry 50 07/02/ A/8260C Dichlorodifluoromethane ND ug/kg dry 50 07/02/ A/8260C 1,1-Dichloroethane ND ug/kg dry 50 07/02/ A/8260C 1,2-Dichloroethane (EDC) ND ug/kg dry 50 07/02/ A/8260C 1,1-Dichloroethene ND ug/kg dry 50 07/02/ A/8260C cis-1,2-dichloroethene ND ug/kg dry 50 07/02/ A/8260C trans-1,2-dichloroethene ND ug/kg dry 50 07/02/ A/8260C 1,2-Dichloropropane ND ug/kg dry 50 07/02/ A/8260C 1,3-Dichloropropane ND ug/kg dry 50 07/02/ A/8260C 2,2-Dichloropropane ND ug/kg dry 50 07/02/ A/8260C 1,1-Dichloropropene ND ug/kg dry 50 07/02/ A/8260C cis-1,3-dichloropropene ND ug/kg dry 50 07/02/ A/8260C Philip Nerenberg, Lab Director Page 9 of 73

86 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: trans-1,3-dichloropropene ND ug/kg dry 50 07/02/ A/8260C Ethylbenzene ND ug/kg dry 50 07/02/ A/8260C Hexachlorobutadiene ND ug/kg dry 50 07/02/ A/8260C 2-Hexanone ND ug/kg dry 50 07/02/ A/8260C Isopropylbenzene ND ug/kg dry 50 07/02/ A/8260C 4-Isopropyltoluene ug/kg dry 50 07/02/ A/8260C Methylene chloride ND ug/kg dry 50 07/02/ A/8260C 4-Methyl-2-pentanone (MiBK) ND ug/kg dry 50 07/02/ A/8260C Methyl tert-butyl ether (MTBE) ND ug/kg dry 50 07/02/ A/8260C Naphthalene ND ug/kg dry 50 07/02/ A/8260C n-propylbenzene ND ug/kg dry 50 07/02/ A/8260C Styrene ND ug/kg dry 50 07/02/ A/8260C 1,1,1,2-Tetrachloroethane ND ug/kg dry 50 07/02/ A/8260C 1,1,2,2-Tetrachloroethane ND ug/kg dry 50 07/02/ A/8260C Tetrachloroethene (PCE) ND ug/kg dry 50 07/02/ A/8260C Toluene ND ug/kg dry 50 07/02/ A/8260C 1,2,3-Trichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,2,4-Trichlorobenzene ND ug/kg dry 50 07/02/ A/8260C 1,1,1-Trichloroethane ND ug/kg dry 50 07/02/ A/8260C 1,1,2-Trichloroethane ND ug/kg dry 50 07/02/ A/8260C Trichloroethene (TCE) ND ug/kg dry 50 07/02/ A/8260C Trichlorofluoromethane ND ug/kg dry 50 07/02/ A/8260C 1,2,3-Trichloropropane ND ug/kg dry 50 07/02/ A/8260C 1,2,4-Trimethylbenzene ND ug/kg dry 50 07/02/ A/8260C 1,3,5-Trimethylbenzene ND ug/kg dry 50 07/02/ A/8260C Vinyl chloride ND ug/kg dry 50 07/02/ A/8260C m,p-xylene ND ug/kg dry 50 07/02/ A/8260C o-xylene ND ug/kg dry 50 07/02/ A/8260C Surrogate: 1,4-Difluorobenzene (Surr) Toluene-d8 (Surr) 4-Bromofluorobenzene (Surr) Recovery: 99 % 99 % 103 % s: % 1 07/02/ % 1 07/02/ % 1 07/02/ A/8260C 5035A/8260C 5035A/8260C R-02 Philip Nerenberg, Lab Director Page 10 of 73

87 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: C-07 Aroclor 1016 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1221 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1232 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1242 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1248 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1254 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1260 ND ug/kg dry 1 07/03/18 EPA 8082A Surrogate: Decachlorobiphenyl (Surr) Recovery: 91 % s: % 1 07/03/18 EPA 8082A HA (A8F ) Matrix: Soil Batch: C-07 Aroclor 1016 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1221 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1232 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1242 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1248 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1254 ND ug/kg dry 1 07/03/18 EPA 8082A Aroclor 1260 ND ug/kg dry 1 07/03/18 EPA 8082A Surrogate: Decachlorobiphenyl (Surr) Recovery: 101 % s: % 1 07/03/18 EPA 8082A Philip Nerenberg, Lab Director Page 11 of 73

88 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: Acenaphthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Acenaphthylene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Anthracene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benz(a)anthracene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(a)pyrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(b)fluoranthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(k)fluoranthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(g,h,i)perylene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Chrysene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Dibenz(a,h)anthracene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Dibenzofuran ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Fluoranthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Fluorene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Indeno(1,2,3-cd)pyrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) 1-Methylnaphthalene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) 2-Methylnaphthalene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Naphthalene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Phenanthrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Pyrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Surrogate: 2-Fluorobiphenyl (Surr) p-terphenyl-d14 (Surr) Recovery: 83 % 87 % s: % 1 07/02/ % 1 07/02/18 GW (A8F RE1) Matrix: Water Batch: EPA 8270D (SIM) EPA 8270D (SIM) Acenaphthene ND ug/l 1 07/03/18 EPA 8270D (SIM) Acenaphthylene ND ug/l 1 07/03/18 EPA 8270D (SIM) Anthracene ND ug/l 1 07/03/18 EPA 8270D (SIM) Benz(a)anthracene ND ug/l 1 07/03/18 EPA 8270D (SIM) Benzo(a)pyrene ND ug/l 1 07/03/18 EPA 8270D (SIM) Benzo(b)fluoranthene ND ug/l 1 07/03/18 EPA 8270D (SIM) Benzo(k)fluoranthene ND ug/l 1 07/03/18 EPA 8270D (SIM) Benzo(g,h,i)perylene ND ug/l 1 07/03/18 EPA 8270D (SIM) Chrysene ND ug/l 1 07/03/18 EPA 8270D (SIM) Dibenz(a,h)anthracene ND ug/l 1 07/03/18 EPA 8270D (SIM) Dibenzofuran ND ug/l 1 07/03/18 EPA 8270D (SIM) Fluoranthene ND ug/l 1 07/03/18 EPA 8270D (SIM) Fluorene ND ug/l 1 07/03/18 EPA 8270D (SIM) Indeno(1,2,3-cd)pyrene ND ug/l 1 07/03/18 EPA 8270D (SIM) Philip Nerenberg, Lab Director Page 12 of 73

89 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Sample Detection Date Units Dilution Analyzed Method Ref. GW (A8F RE1) Matrix: Water Batch: Methylnaphthalene ND ug/l 1 07/03/18 EPA 8270D (SIM) 2-Methylnaphthalene ND ug/l 1 07/03/18 EPA 8270D (SIM) Naphthalene ND ug/l 1 07/03/18 EPA 8270D (SIM) Phenanthrene ND ug/l 1 07/03/18 EPA 8270D (SIM) Pyrene ND ug/l 1 07/03/18 EPA 8270D (SIM) Surrogate: 2-Fluorobiphenyl (Surr) p-terphenyl-d14 (Surr) Recovery: 53 % 42 % s: % 1 07/03/ % 1 07/03/18 EPA 8270D (SIM) EPA 8270D (SIM) S-06 HA (A8F ) Matrix: Soil Batch: Acenaphthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Acenaphthylene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Anthracene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benz(a)anthracene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(a)pyrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(b)fluoranthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(k)fluoranthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Benzo(g,h,i)perylene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Chrysene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Dibenz(a,h)anthracene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Dibenzofuran ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Fluoranthene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Fluorene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Indeno(1,2,3-cd)pyrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) 1-Methylnaphthalene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) 2-Methylnaphthalene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Naphthalene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Phenanthrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Pyrene ND ug/kg dry 1 07/02/18 EPA 8270D (SIM) Surrogate: 2-Fluorobiphenyl (Surr) p-terphenyl-d14 (Surr) Recovery: 84 % 92 % s: % 1 07/02/ % 1 07/02/18 EPA 8270D (SIM) EPA 8270D (SIM) Philip Nerenberg, Lab Director Page 13 of 73

90 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: Antimony ND mg/kg dry 10 07/03/18 EPA 6020A Arsenic mg/kg dry 10 07/03/18 EPA 6020A Beryllium ND mg/kg dry 10 07/03/18 EPA 6020A Cadmium ND mg/kg dry 10 07/03/18 EPA 6020A Chromium mg/kg dry 10 07/03/18 EPA 6020A Copper mg/kg dry 10 07/03/18 EPA 6020A Lead mg/kg dry 10 07/03/18 EPA 6020A Mercury ND mg/kg dry 10 07/03/18 EPA 6020A Nickel mg/kg dry 10 07/03/18 EPA 6020A Selenium ND mg/kg dry 10 07/03/18 EPA 6020A Silver ND mg/kg dry 10 07/03/18 EPA 6020A Thallium ND mg/kg dry 10 07/03/18 EPA 6020A Zinc mg/kg dry 10 07/03/18 EPA 6020A HA (A8F ) Matrix: Soil Batch: Antimony ND mg/kg dry 10 07/03/18 EPA 6020A Arsenic mg/kg dry 10 07/03/18 EPA 6020A Beryllium ND mg/kg dry 10 07/03/18 EPA 6020A Cadmium ND mg/kg dry 10 07/03/18 EPA 6020A Chromium mg/kg dry 10 07/03/18 EPA 6020A Copper mg/kg dry 10 07/03/18 EPA 6020A Lead mg/kg dry 10 07/03/18 EPA 6020A Mercury ND mg/kg dry 10 07/03/18 EPA 6020A Nickel mg/kg dry 10 07/03/18 EPA 6020A Selenium ND mg/kg dry 10 07/03/18 EPA 6020A Silver ND mg/kg dry 10 07/03/18 EPA 6020A Thallium ND mg/kg dry 10 07/03/18 EPA 6020A Zinc mg/kg dry 10 07/03/18 EPA 6020A Philip Nerenberg, Lab Director Page 14 of 73

91 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F ANALYTICAL SAMPLE RESULTS Percent Dry Weight Analyte Sample Detection Date Units Dilution Analyzed Method Ref. HA (A8F ) Matrix: Soil Batch: % Solids % by Weight 1 07/05/18 HA (A8F ) Matrix: Soil Batch: % Solids % by Weight 1 07/05/18 EPA 8000C EPA 8000C Philip Nerenberg, Lab Director Page 15 of 73

92 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3510C (Fuels/Acid Ext.) Water Blank ( BLK1) Prepared: 07/02/18 07:01 Analyzed: 07/02/18 22:01 NWTPH-Dx Diesel Oil ND mg/l B-02 ND mg/l Surr: o-terphenyl (Surr) Recovery: 94 % s: % Dilution: 1x LCS ( BS1) Prepared: 07/02/18 07:01 Analyzed: 07/02/18 22:20 NWTPH-Dx Diesel mg/l % B-02 Surr: o-terphenyl (Surr) Recovery: 87 % s: % Dilution: 1x LCS Dup ( BSD1) Prepared: 07/02/18 07:01 Analyzed: 07/02/18 22:40 NWTPH-Dx Diesel mg/l % 3 20% B-02 Surr: o-terphenyl (Surr) Recovery: 82 % s: % Dilution: 1x Q-19 Batch EPA 3546 (Fuels) Soil Blank ( BLK1) Prepared: 07/06/18 09:53 Analyzed: 07/06/18 21:53 NWTPH-Dx Diesel Oil ND mg/kg wet ND mg/kg wet Surr: o-terphenyl (Surr) Recovery: 96 % s: % Dilution: 1x LCS ( BS1) Prepared: 07/06/18 09:53 Analyzed: 07/06/18 22:15 NWTPH-Dx Diesel mg/kg wet % Surr: o-terphenyl (Surr) Recovery: 96 % s: % Dilution: 1x Duplicate ( DUP1) Prepared: 07/06/18 09:53 Analyzed: 07/07/18 01:29 QC Source Sample: HA (A8F ) NWTPH-Dx Diesel Oil ND mg/kg dry *** 30% Q-05 ND mg/kg dry ND % Philip Nerenberg, Lab Director Page 16 of 73

93 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Diesel and/or Oil Hydrocarbons by NWTPH-Dx Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3546 (Fuels) Soil Duplicate ( DUP1) Prepared: 07/06/18 09:53 Analyzed: 07/07/18 01:29 QC Source Sample: HA (A8F ) Surr: o-terphenyl (Surr) Recovery: 92 % s: % Dilution: 1x Duplicate ( DUP2) Prepared: 07/06/18 13:35 Analyzed: 07/07/18 07:54 Diesel Oil QC Source Sample: Non-SDG (A8G ) ND mg/kg dry *** 30% ND mg/kg dry ND % Surr: o-terphenyl (Surr) Recovery: 91 % s: % Dilution: 1x Philip Nerenberg, Lab Director Page 17 of 73

94 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:56 NWTPH-Gx (MS) Gasoline Range Organics ND mg/l Surr: 4-Bromofluorobenzene (Sur) Recovery: 95 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 100 % % LCS ( BS2) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:29 NWTPH-Gx (MS) Gasoline Range Organics mg/l % Surr: 4-Bromofluorobenzene (Sur) Recovery: 100 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 100 % % Duplicate ( DUP1) Prepared: 06/29/18 14:30 Analyzed: 06/29/18 17:40 QC Source Sample: GW (A8F ) NWTPH-Gx (MS) Gasoline Range Organics ND mg/l ND % Surr: 4-Bromofluorobenzene (Sur) Recovery: 96 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 102 % % Philip Nerenberg, Lab Director Page 18 of 73

95 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 10:06 NWTPH-Gx (MS) Gasoline Range Organics ND mg/l Surr: 4-Bromofluorobenzene (Sur) Recovery: 96 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 102 % % LCS ( BS2) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 09:39 NWTPH-Gx (MS) Gasoline Range Organics mg/l % Surr: 4-Bromofluorobenzene (Sur) Recovery: 99 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 101 % % Duplicate ( DUP1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 14:38 QC Source Sample: Non-SDG (A8F RE1) Gasoline Range Organics mg/l % Surr: 4-Bromofluorobenzene (Sur) Recovery: 96 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 102 % % Philip Nerenberg, Lab Director Page 19 of 73

96 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 14:07 NWTPH-Gx (MS) Gasoline Range Organics ND mg/kg wet Surr: 4-Bromofluorobenzene (Sur) Recovery: 99 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 94 % % LCS ( BS2) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 13:40 NWTPH-Gx (MS) Gasoline Range Organics mg/kg wet % Surr: 4-Bromofluorobenzene (Sur) Recovery: 97 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 96 % % Duplicate ( DUP1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 15:01 QC Source Sample: Non-SDG (A8G ) Gasoline Range Organics ND mg/kg dry ND % Surr: 4-Bromofluorobenzene (Sur) Recovery: 102 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 95 % % Duplicate ( DUP2) Prepared: 07/02/18 16:58 Analyzed: 07/02/18 21:45 QC Source Sample: Non-SDG (A8G ) Gasoline Range Organics mg/kg dry % Surr: 4-Bromofluorobenzene (Sur) Recovery: 95 % s: % Dilution: 1x 1,4-Difluorobenzene (Sur) 98 % % V-15 Philip Nerenberg, Lab Director Page 20 of 73

97 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:56 EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane (EDC) 1,1-Dichloroethene cis-1,2-dichloroethene trans-1,2-dichloroethene ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l Philip Nerenberg, Lab Director Page 21 of 73

98 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:56 1,2-Dichloropropane ND ug/l ,3-Dichloropropane ND ug/l ,2-Dichloropropane ND ug/l ,1-Dichloropropene ND ug/l cis-1,3-dichloropropene ND ug/l trans-1,3-dichloropropene ND ug/l Ethylbenzene ND ug/l Hexachlorobutadiene ND ug/l Hexanone ND ug/l Isopropylbenzene ND ug/l Isopropyltoluene ND ug/l Methylene chloride ND ug/l Methyl-2-pentanone (MiBK) ND ug/l Methyl tert-butyl ether ND ug/l (MTBE) Naphthalene ND ug/l n-propylbenzene ND ug/l Styrene ND ug/l ,1,1,2-Tetrachloroethane ND ug/l ,1,2,2-Tetrachloroethane ND ug/l Tetrachloroethene (PCE) ND ug/l Toluene ND ug/l ,2,3-Trichlorobenzene ND ug/l ,2,4-Trichlorobenzene ND ug/l ,1,1-Trichloroethane ND ug/l ,1,2-Trichloroethane ND ug/l Trichloroethene (TCE) ND ug/l Trichlorofluoromethane ND ug/l ,2,3-Trichloropropane ND ug/l ,2,4-Trimethylbenzene ND ug/l ,3,5-Trimethylbenzene ND ug/l Vinyl chloride ND ug/l m,p-xylene ND ug/l o-xylene ND ug/l Philip Nerenberg, Lab Director Page 22 of 73

99 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:56 Surr: 1,4-Difluorobenzene (Surr) Recovery: 102 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 98 % % LCS ( BS1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:02 EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Q ug/l % E-05, Q ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Q ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Philip Nerenberg, Lab Director Page 23 of 73

100 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water LCS ( BS1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:02 1,1-Dichloroethane ug/l % ,2-Dichloroethane (EDC) ug/l % ,1-Dichloroethene ug/l % cis-1,2-dichloroethene ug/l % trans-1,2-dichloroethene ug/l % ,2-Dichloropropane ug/l % ,3-Dichloropropane ug/l % ,2-Dichloropropane ug/l % ,1-Dichloropropene ug/l % cis-1,3-dichloropropene ug/l % trans-1,3-dichloropropene ug/l % Ethylbenzene ug/l % Hexachlorobutadiene ug/l % Hexanone ug/l % Isopropylbenzene ug/l % Isopropyltoluene ug/l % Methylene chloride ug/l % Methyl-2-pentanone (MiBK) ug/l % Methyl tert-butyl ether ug/l % (MTBE) Naphthalene ug/l % n-propylbenzene ug/l % Styrene ug/l % ,1,1,2-Tetrachloroethane ug/l % ,1,2,2-Tetrachloroethane ug/l % Tetrachloroethene (PCE) ug/l % Toluene ug/l % ,2,3-Trichlorobenzene ug/l % ,2,4-Trichlorobenzene ug/l % ,1,1-Trichloroethane ug/l % ,1,2-Trichloroethane ug/l % Trichloroethene (TCE) ug/l % Trichlorofluoromethane ug/l % Q-56 1,2,3-Trichloropropane ug/l % ,2,4-Trimethylbenzene ug/l % Philip Nerenberg, Lab Director Page 24 of 73

101 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water LCS ( BS1) Prepared: 06/29/18 09:35 Analyzed: 06/29/18 10:02 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/l % ug/l % ug/l % ug/l % Surr: 1,4-Difluorobenzene (Surr) Recovery: 104 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 98 % % Duplicate ( DUP1) Prepared: 06/29/18 14:30 Analyzed: 06/29/18 17:40 QC Source Sample: GW (A8F ) EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % Philip Nerenberg, Lab Director Page 25 of 73

102 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Duplicate ( DUP1) Prepared: 06/29/18 14:30 Analyzed: 06/29/18 17:40 QC Source Sample: GW (A8F ) Dibromomethane ND ug/l ND % 1,2-Dichlorobenzene ND ug/l ND % 1,3-Dichlorobenzene ND ug/l ND % 1,4-Dichlorobenzene ND ug/l ND % Dichlorodifluoromethane ND ug/l ND % 1,1-Dichloroethane ND ug/l ND % 1,2-Dichloroethane (EDC) ND ug/l ND % 1,1-Dichloroethene ND ug/l ND % cis-1,2-dichloroethene ND ug/l ND % trans-1,2-dichloroethene ND ug/l ND % 1,2-Dichloropropane ND ug/l ND % 1,3-Dichloropropane ND ug/l ND % 2,2-Dichloropropane ND ug/l ND % 1,1-Dichloropropene ND ug/l ND % cis-1,3-dichloropropene ND ug/l ND % trans-1,3-dichloropropene ND ug/l ND % Ethylbenzene ND ug/l ND % Hexachlorobutadiene ND ug/l ND % 2-Hexanone ND ug/l ND % Isopropylbenzene ND ug/l ND % 4-Isopropyltoluene ND ug/l ND % Methylene chloride ND ug/l ND % 4-Methyl-2-pentanone (MiBK) ND ug/l ND % Methyl tert-butyl ether ND ug/l ND % (MTBE) Naphthalene ND ug/l ND % n-propylbenzene ND ug/l ND % Styrene ND ug/l ND % 1,1,1,2-Tetrachloroethane ND ug/l ND % 1,1,2,2-Tetrachloroethane ND ug/l ND % Tetrachloroethene (PCE) ND ug/l ND % Toluene ND ug/l ND % 1,2,3-Trichlorobenzene ND ug/l ND % Philip Nerenberg, Lab Director Page 26 of 73

103 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Duplicate ( DUP1) Prepared: 06/29/18 14:30 Analyzed: 06/29/18 17:40 QC Source Sample: GW (A8F ) 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % Surr: 1,4-Difluorobenzene (Surr) Recovery: 104 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 97 % % Matrix Spike ( MS1) Prepared: 06/29/18 12:00 Analyzed: 06/29/18 13:37 QC Source Sample: Non-SDG (A8F ) EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % Q-54h ug/l ND % E-05, Q-54b ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % Q-54g ug/l ND % Philip Nerenberg, Lab Director Page 27 of 73

104 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Matrix Spike ( MS1) Prepared: 06/29/18 12:00 Analyzed: 06/29/18 13:37 QC Source Sample: Non-SDG (A8F ) Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane (EDC) 1,1-Dichloroethene cis-1,2-dichloroethene trans-1,2-dichloroethene 1,2-Dichloropropane 1,3-Dichloropropane 2,2-Dichloropropane 1,1-Dichloropropene cis-1,3-dichloropropene trans-1,3-dichloropropene Ethylbenzene Hexachlorobutadiene 2-Hexanone Isopropylbenzene 4-Isopropyltoluene Methylene chloride 4-Methyl-2-pentanone (MiBK) Methyl tert-butyl ether (MTBE) ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % Philip Nerenberg, Lab Director Page 28 of 73

105 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Matrix Spike ( MS1) Prepared: 06/29/18 12:00 Analyzed: 06/29/18 13:37 Naphthalene QC Source Sample: Non-SDG (A8F ) n-propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % Q-54c ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % Surr: 1,4-Difluorobenzene (Surr) Recovery: 104 % s: % Dilution: 1x Toluene-d8 (Surr) 101 % % 4-Bromofluorobenzene (Surr) 97 % % Philip Nerenberg, Lab Director Page 29 of 73

106 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 10:06 EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane (EDC) 1,1-Dichloroethene cis-1,2-dichloroethene trans-1,2-dichloroethene ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l Philip Nerenberg, Lab Director Page 30 of 73

107 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 10:06 1,2-Dichloropropane ND ug/l ,3-Dichloropropane ND ug/l ,2-Dichloropropane ND ug/l ,1-Dichloropropene ND ug/l cis-1,3-dichloropropene ND ug/l trans-1,3-dichloropropene ND ug/l Ethylbenzene ND ug/l Hexachlorobutadiene ND ug/l Hexanone ND ug/l Isopropylbenzene ND ug/l Isopropyltoluene ND ug/l Methylene chloride ND ug/l Methyl-2-pentanone (MiBK) ND ug/l Methyl tert-butyl ether ND ug/l (MTBE) Naphthalene ND ug/l n-propylbenzene ND ug/l Styrene ND ug/l ,1,1,2-Tetrachloroethane ND ug/l ,1,2,2-Tetrachloroethane ND ug/l Tetrachloroethene (PCE) ND ug/l Toluene ND ug/l ,2,3-Trichlorobenzene ND ug/l ,2,4-Trichlorobenzene ND ug/l ,1,1-Trichloroethane ND ug/l ,1,2-Trichloroethane ND ug/l Trichloroethene (TCE) ND ug/l Trichlorofluoromethane ND ug/l ,2,3-Trichloropropane ND ug/l ,2,4-Trimethylbenzene ND ug/l ,3,5-Trimethylbenzene ND ug/l Vinyl chloride ND ug/l m,p-xylene ND ug/l o-xylene ND ug/l Philip Nerenberg, Lab Director Page 31 of 73

108 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Blank ( BLK1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 10:06 Surr: 1,4-Difluorobenzene (Surr) Recovery: 104 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 98 % % LCS ( BS1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 09:13 EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % E ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Q ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Philip Nerenberg, Lab Director Page 32 of 73

109 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water LCS ( BS1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 09:13 1,1-Dichloroethane ug/l % ,2-Dichloroethane (EDC) ug/l % ,1-Dichloroethene ug/l % cis-1,2-dichloroethene ug/l % trans-1,2-dichloroethene ug/l % ,2-Dichloropropane ug/l % ,3-Dichloropropane ug/l % ,2-Dichloropropane ug/l % ,1-Dichloropropene ug/l % cis-1,3-dichloropropene ug/l % trans-1,3-dichloropropene ug/l % Ethylbenzene ug/l % Hexachlorobutadiene ug/l % Hexanone ug/l % Isopropylbenzene ug/l % Isopropyltoluene ug/l % Methylene chloride ug/l % Methyl-2-pentanone (MiBK) ug/l % Methyl tert-butyl ether ug/l % (MTBE) Naphthalene ug/l % n-propylbenzene ug/l % Styrene ug/l % ,1,1,2-Tetrachloroethane ug/l % ,1,2,2-Tetrachloroethane ug/l % Tetrachloroethene (PCE) ug/l % Toluene ug/l % ,2,3-Trichlorobenzene ug/l % ,2,4-Trichlorobenzene ug/l % ,1,1-Trichloroethane ug/l % ,1,2-Trichloroethane ug/l % Trichloroethene (TCE) ug/l % Trichlorofluoromethane ug/l % Q-56 1,2,3-Trichloropropane ug/l % ,2,4-Trimethylbenzene ug/l % Philip Nerenberg, Lab Director Page 33 of 73

110 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water LCS ( BS1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 09:13 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/l % ug/l % ug/l % ug/l % Surr: 1,4-Difluorobenzene (Surr) Recovery: 102 % s: % Dilution: 1x Toluene-d8 (Surr) 99 % % 4-Bromofluorobenzene (Surr) 99 % % LCS Dup ( BSD1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 13:44 EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane ug/l % 6 30% ug/l % 9 30% ug/l % 8 30% ug/l % 3 30% ug/l % 3 30% ug/l % 4 30% ug/l % % ug/l % 18 30% E-05, Q ug/l % 9 30% ug/l % 8 30% ug/l % 9 30% ug/l % 9 30% ug/l % 8 30% ug/l % 10 30% ug/l % 5 30% ug/l % 3 30% ug/l % 8 30% ug/l % 9 30% ug/l % 5 30% ug/l % 7 30% ug/l % 2 30% ug/l % % ug/l % % ug/l % 6 30% Philip Nerenberg, Lab Director Page 34 of 73

111 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water LCS Dup ( BSD1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 13:44 1,2-Dichlorobenzene ug/l % 4 30% 1,3-Dichlorobenzene ug/l % 4 30% 1,4-Dichlorobenzene ug/l % 4 30% Dichlorodifluoromethane ug/l % 12 30% 1,1-Dichloroethane ug/l % 8 30% 1,2-Dichloroethane (EDC) ug/l % 4 30% 1,1-Dichloroethene ug/l % 13 30% cis-1,2-dichloroethene ug/l % 7 30% trans-1,2-dichloroethene ug/l % 10 30% 1,2-Dichloropropane ug/l % 7 30% 1,3-Dichloropropane ug/l % 4 30% 2,2-Dichloropropane ug/l % 7 30% 1,1-Dichloropropene ug/l % 12 30% cis-1,3-dichloropropene ug/l % 3 30% trans-1,3-dichloropropene ug/l % 1 30% Ethylbenzene ug/l % 6 30% Hexachlorobutadiene ug/l % 7 30% 2-Hexanone ug/l % 5 30% Isopropylbenzene ug/l % 8 30% 4-Isopropyltoluene ug/l % 6 30% Methylene chloride ug/l % 6 30% 4-Methyl-2-pentanone (MiBK) ug/l % 4 30% Methyl tert-butyl ether ug/l % 1 30% (MTBE) Naphthalene ug/l % 1 30% n-propylbenzene ug/l % 8 30% Styrene ug/l % 5 30% 1,1,1,2-Tetrachloroethane ug/l % 6 30% 1,1,2,2-Tetrachloroethane ug/l % 2 30% Tetrachloroethene (PCE) ug/l % 7 30% Toluene ug/l % 7 30% 1,2,3-Trichlorobenzene ug/l % 2 30% 1,2,4-Trichlorobenzene ug/l % 2 30% 1,1,1-Trichloroethane ug/l % 8 30% 1,1,2-Trichloroethane ug/l % 2 30% Philip Nerenberg, Lab Director Page 35 of 73

112 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water LCS Dup ( BSD1) Prepared: 07/02/18 08:46 Analyzed: 07/02/18 13:44 Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/l % 6 30% ug/l % 16 30% Q ug/l % 5 30% ug/l % 6 30% ug/l % 7 30% ug/l % 14 30% ug/l % 7 30% ug/l % 4 30% Surr: 1,4-Difluorobenzene (Surr) Recovery: 104 % s: % Dilution: 1x Toluene-d8 (Surr) 101 % % 4-Bromofluorobenzene (Surr) 98 % % Duplicate ( DUP1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 14:38 QC Source Sample: Non-SDG (A8F RE1) Acetone ND ug/l ND % Acrylonitrile ND ug/l ND % Benzene ug/l % Bromobenzene ND ug/l ND % Bromochloromethane ND ug/l ND % Bromodichloromethane ND ug/l ND % Bromoform ND ug/l ND % Bromomethane ND ug/l ND % 2-Butanone (MEK) ND ug/l ND % n-butylbenzene ND ug/l ND % Q-05 sec-butylbenzene ND ug/l ND % tert-butylbenzene ND ug/l ND % Carbon disulfide ND ug/l ND % Carbon tetrachloride ND ug/l ND % Chlorobenzene ND ug/l ND % Chloroethane ND ug/l ND % Chloroform ND ug/l ND % Chloromethane ND ug/l ND % 2-Chlorotoluene ND ug/l ND % 4-Chlorotoluene ND ug/l ND % Philip Nerenberg, Lab Director Page 36 of 73

113 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Duplicate ( DUP1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 14:38 QC Source Sample: Non-SDG (A8F RE1) Dibromochloromethane ND ug/l ND % 1,2-Dibromo-3-chloropropane ND ug/l ND % 1,2-Dibromoethane (EDB) ND ug/l ND % Dibromomethane ND ug/l ND % 1,2-Dichlorobenzene ND ug/l ND % 1,3-Dichlorobenzene ND ug/l ND % 1,4-Dichlorobenzene ND ug/l ND % Dichlorodifluoromethane ND ug/l ND % 1,1-Dichloroethane ND ug/l ND % 1,2-Dichloroethane (EDC) ND ug/l ND % 1,1-Dichloroethene ND ug/l ND % cis-1,2-dichloroethene ND ug/l ND % trans-1,2-dichloroethene ND ug/l ND % 1,2-Dichloropropane ND ug/l ND % 1,3-Dichloropropane ND ug/l ND % 2,2-Dichloropropane ND ug/l ND % 1,1-Dichloropropene ND ug/l ND % cis-1,3-dichloropropene ND ug/l ND % trans-1,3-dichloropropene ND ug/l ND % Ethylbenzene ug/l % Hexachlorobutadiene ND ug/l ND % 2-Hexanone ND ug/l ND % Isopropylbenzene ug/l % 4-Isopropyltoluene ND ug/l ND % Methylene chloride ND ug/l ND % 4-Methyl-2-pentanone (MiBK) ND ug/l ND % Methyl tert-butyl ether ND ug/l ND % (MTBE) Naphthalene ug/l % n-propylbenzene ug/l % Styrene ND ug/l ND % 1,1,1,2-Tetrachloroethane ND ug/l ND % 1,1,2,2-Tetrachloroethane ND ug/l ND % Philip Nerenberg, Lab Director Page 37 of 73

114 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Duplicate ( DUP1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 14:38 QC Source Sample: Non-SDG (A8F RE1) Tetrachloroethene (PCE) Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ND ug/l ND % ND ug/l *** 30% ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ND ug/l ND % ug/l % ug/l % ND ug/l ND % ug/l % ug/l % Surr: 1,4-Difluorobenzene (Surr) Recovery: 104 % s: % Dilution: 1x Toluene-d8 (Surr) 99 % % 4-Bromofluorobenzene (Surr) 95 % % Matrix Spike ( MS1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 15:05 QC Source Sample: Non-SDG (A8F RE1) EPA 8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene ug/l ND % ug/l ND % ug/l % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % E-05, Q-54a ug/l ND % ug/l ND % ug/l ND % ug/l ND % Philip Nerenberg, Lab Director Page 38 of 73

115 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Matrix Spike ( MS1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 15:05 QC Source Sample: Non-SDG (A8F RE1) Carbon disulfide ug/l ND % Carbon tetrachloride ug/l ND % Q-54f Chlorobenzene ug/l ND % Chloroethane ug/l ND % Chloroform ug/l ND % Chloromethane ug/l ND % Chlorotoluene ug/l ND % Chlorotoluene ug/l ND % Dibromochloromethane ug/l ND % ,2-Dibromo-3-chloropropane ug/l ND % ,2-Dibromoethane (EDB) ug/l ND % Dibromomethane ug/l ND % ,2-Dichlorobenzene ug/l ND % ,3-Dichlorobenzene ug/l ND % ,4-Dichlorobenzene ug/l ND % Dichlorodifluoromethane ug/l ND % ,1-Dichloroethane ug/l ND % ,2-Dichloroethane (EDC) ug/l % ,1-Dichloroethene ug/l ND % cis-1,2-dichloroethene ug/l ND % trans-1,2-dichloroethene ug/l ND % ,2-Dichloropropane ug/l ND % ,3-Dichloropropane ug/l ND % ,2-Dichloropropane ug/l ND % ,1-Dichloropropene ug/l ND % cis-1,3-dichloropropene ug/l ND % trans-1,3-dichloropropene ug/l ND % Ethylbenzene ug/l % Hexachlorobutadiene ug/l ND % Hexanone ug/l ND % Isopropylbenzene ug/l % Isopropyltoluene ug/l ND % Methylene chloride ug/l ND % Philip Nerenberg, Lab Director Page 39 of 73

116 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5030B Water Matrix Spike ( MS1) Prepared: 07/02/18 09:33 Analyzed: 07/02/18 15:05 QC Source Sample: Non-SDG (A8F RE1) 4-Methyl-2-pentanone (MiBK) Methyl tert-butyl ether (MTBE) Naphthalene n-propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/l ND % ug/l ND % ug/l % ug/l % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % ug/l ND % Q-54d ug/l ND % ug/l % ug/l % ug/l ND % ug/l % ug/l % Surr: 1,4-Difluorobenzene (Surr) Recovery: 106 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 96 % % Philip Nerenberg, Lab Director Page 40 of 73

117 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 14: A/8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,2-Dichloroethane (EDC) 1,1-Dichloroethene cis-1,2-dichloroethene trans-1,2-dichloroethene ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet Philip Nerenberg, Lab Director Page 41 of 73

118 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 14:07 1,2-Dichloropropane ND ug/kg wet ,3-Dichloropropane ND ug/kg wet ,2-Dichloropropane ND ug/kg wet ,1-Dichloropropene ND ug/kg wet cis-1,3-dichloropropene ND ug/kg wet trans-1,3-dichloropropene ND ug/kg wet Ethylbenzene ND ug/kg wet Hexachlorobutadiene ND ug/kg wet Hexanone ND ug/kg wet Isopropylbenzene ND ug/kg wet Isopropyltoluene ND ug/kg wet Methylene chloride ND ug/kg wet Methyl-2-pentanone (MiBK) ND ug/kg wet Methyl tert-butyl ether ND ug/kg wet (MTBE) Naphthalene ND ug/kg wet n-propylbenzene ND ug/kg wet Styrene ND ug/kg wet ,1,1,2-Tetrachloroethane ND ug/kg wet ,1,2,2-Tetrachloroethane ND ug/kg wet Tetrachloroethene (PCE) ND ug/kg wet Toluene ND ug/kg wet ,2,3-Trichlorobenzene ND ug/kg wet ,2,4-Trichlorobenzene ND ug/kg wet ,1,1-Trichloroethane ND ug/kg wet ,1,2-Trichloroethane ND ug/kg wet Trichloroethene (TCE) ND ug/kg wet Trichlorofluoromethane ND ug/kg wet ,2,3-Trichloropropane ND ug/kg wet ,2,4-Trimethylbenzene ND ug/kg wet ,3,5-Trimethylbenzene ND ug/kg wet Vinyl chloride ND ug/kg wet m,p-xylene ND ug/kg wet o-xylene ND ug/kg wet Philip Nerenberg, Lab Director Page 42 of 73

119 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Blank ( BLK1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 14:07 Surr: 1,4-Difluorobenzene (Surr) Recovery: 99 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 103 % % LCS ( BS1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 13: A/8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) n-butylbenzene sec-butylbenzene tert-butylbenzene Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane 2-Chlorotoluene 4-Chlorotoluene Dibromochloromethane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Dibromomethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % Q ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % Philip Nerenberg, Lab Director Page 43 of 73

120 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil LCS ( BS1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 13:13 1,1-Dichloroethane ug/kg wet % ,2-Dichloroethane (EDC) ug/kg wet % ,1-Dichloroethene ug/kg wet % cis-1,2-dichloroethene ug/kg wet % trans-1,2-dichloroethene ug/kg wet % ,2-Dichloropropane ug/kg wet % ,3-Dichloropropane ug/kg wet % ,2-Dichloropropane ug/kg wet % Q-56 1,1-Dichloropropene ug/kg wet % cis-1,3-dichloropropene ug/kg wet % trans-1,3-dichloropropene ug/kg wet % Ethylbenzene ug/kg wet % Hexachlorobutadiene ug/kg wet % Hexanone ug/kg wet % Isopropylbenzene ug/kg wet % Isopropyltoluene ug/kg wet % Methylene chloride ug/kg wet % Methyl-2-pentanone (MiBK) ug/kg wet % Methyl tert-butyl ether ug/kg wet % (MTBE) Naphthalene ug/kg wet % n-propylbenzene ug/kg wet % Styrene ug/kg wet % ,1,1,2-Tetrachloroethane ug/kg wet % ,1,2,2-Tetrachloroethane ug/kg wet % Tetrachloroethene (PCE) ug/kg wet % Toluene ug/kg wet % ,2,3-Trichlorobenzene ug/kg wet % ,2,4-Trichlorobenzene ug/kg wet % ,1,1-Trichloroethane ug/kg wet % ,1,2-Trichloroethane ug/kg wet % Trichloroethene (TCE) ug/kg wet % Trichlorofluoromethane ug/kg wet % ,2,3-Trichloropropane ug/kg wet % ,2,4-Trimethylbenzene ug/kg wet % Philip Nerenberg, Lab Director Page 44 of 73

121 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil LCS ( BS1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 13:13 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % Surr: 1,4-Difluorobenzene (Surr) Recovery: 98 % s: % Dilution: 1x Toluene-d8 (Surr) 100 % % 4-Bromofluorobenzene (Surr) 102 % % Duplicate ( DUP1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 15:01 QC Source Sample: Non-SDG (A8G ) Acetone ND ug/kg dry ND % Acrylonitrile ND ug/kg dry ND % Benzene ND ug/kg dry ND % Bromobenzene ND ug/kg dry ND % Bromochloromethane ND ug/kg dry ND % Bromodichloromethane ND ug/kg dry ND % Bromoform ND ug/kg dry ND % Bromomethane ND ug/kg dry ND % 2-Butanone (MEK) ND ug/kg dry ND % n-butylbenzene ND ug/kg dry ND % sec-butylbenzene ND ug/kg dry ND % tert-butylbenzene ND ug/kg dry ND % Carbon disulfide ND ug/kg dry ND % Carbon tetrachloride ND ug/kg dry ND % Chlorobenzene ND ug/kg dry ND % Chloroethane ND ug/kg dry ND % Chloroform ND ug/kg dry ND % Chloromethane ND ug/kg dry ND % 2-Chlorotoluene ND ug/kg dry ND % 4-Chlorotoluene ND ug/kg dry ND % Dibromochloromethane ND ug/kg dry ND % 1,2-Dibromo-3-chloropropane ND ug/kg dry ND % 1,2-Dibromoethane (EDB) ND ug/kg dry ND % Dibromomethane ND ug/kg dry ND % Philip Nerenberg, Lab Director Page 45 of 73

122 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Duplicate ( DUP1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 15:01 QC Source Sample: Non-SDG (A8G ) 1,2-Dichlorobenzene ND ug/kg dry ND % 1,3-Dichlorobenzene ND ug/kg dry ND % 1,4-Dichlorobenzene ND ug/kg dry ND % Dichlorodifluoromethane ND ug/kg dry ND % 1,1-Dichloroethane ND ug/kg dry ND % 1,2-Dichloroethane (EDC) ND ug/kg dry ND % 1,1-Dichloroethene ND ug/kg dry ND % cis-1,2-dichloroethene ND ug/kg dry ND % trans-1,2-dichloroethene ND ug/kg dry ND % 1,2-Dichloropropane ND ug/kg dry ND % 1,3-Dichloropropane ND ug/kg dry ND % 2,2-Dichloropropane ND ug/kg dry ND % 1,1-Dichloropropene ND ug/kg dry ND % cis-1,3-dichloropropene ND ug/kg dry ND % trans-1,3-dichloropropene ND ug/kg dry ND % Ethylbenzene ND ug/kg dry ND % Hexachlorobutadiene ND ug/kg dry ND % 2-Hexanone ND ug/kg dry ND % Isopropylbenzene ND ug/kg dry ND % 4-Isopropyltoluene ND ug/kg dry ND % Methylene chloride ND ug/kg dry ND % 4-Methyl-2-pentanone (MiBK) ND ug/kg dry ND % Methyl tert-butyl ether ND ug/kg dry ND % (MTBE) Naphthalene ND ug/kg dry ND % n-propylbenzene ND ug/kg dry ND % Styrene ND ug/kg dry ND % 1,1,1,2-Tetrachloroethane ND ug/kg dry ND % 1,1,2,2-Tetrachloroethane ND ug/kg dry ND % Tetrachloroethene (PCE) ND ug/kg dry ND % Toluene ND ug/kg dry ND % 1,2,3-Trichlorobenzene ND ug/kg dry ND % 1,2,4-Trichlorobenzene ND ug/kg dry ND % Philip Nerenberg, Lab Director Page 46 of 73

123 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Duplicate ( DUP1) Prepared: 07/02/18 08:00 Analyzed: 07/02/18 15:01 QC Source Sample: Non-SDG (A8G ) 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % Surr: 1,4-Difluorobenzene (Surr) Recovery: 99 % s: % Dilution: 1x Toluene-d8 (Surr) 97 % % 4-Bromofluorobenzene (Surr) 103 % % Duplicate ( DUP2) Prepared: 07/02/18 16:58 Analyzed: 07/02/18 21:45 QC Source Sample: Non-SDG (A8G ) Acetone ND ug/kg dry ND % Acrylonitrile ND ug/kg dry ND % Benzene ND ug/kg dry ND % Bromobenzene ND ug/kg dry ND % Bromochloromethane ND ug/kg dry ND % Bromodichloromethane ND ug/kg dry ND % Bromoform ND ug/kg dry ND % Bromomethane ND ug/kg dry ND % 2-Butanone (MEK) ND ug/kg dry ND % n-butylbenzene ug/kg dry % sec-butylbenzene ug/kg dry % tert-butylbenzene ND ug/kg dry ND % Carbon disulfide ND ug/kg dry ND % Carbon tetrachloride ND ug/kg dry ND % Chlorobenzene ND ug/kg dry ND % Chloroethane ND ug/kg dry ND % Chloroform ND ug/kg dry ND % V-15 Philip Nerenberg, Lab Director Page 47 of 73

124 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Duplicate ( DUP2) Prepared: 07/02/18 16:58 Analyzed: 07/02/18 21:45 QC Source Sample: Non-SDG (A8G ) Chloromethane ND ug/kg dry ND % 2-Chlorotoluene ND ug/kg dry ND % 4-Chlorotoluene ND ug/kg dry ND % Dibromochloromethane ND ug/kg dry ND % 1,2-Dibromo-3-chloropropane ND ug/kg dry ND % 1,2-Dibromoethane (EDB) ND ug/kg dry ND % Dibromomethane ND ug/kg dry ND % 1,2-Dichlorobenzene ND ug/kg dry ND % 1,3-Dichlorobenzene ND ug/kg dry ND % 1,4-Dichlorobenzene ND ug/kg dry ND % Dichlorodifluoromethane ND ug/kg dry ND % 1,1-Dichloroethane ND ug/kg dry ND % 1,2-Dichloroethane (EDC) ND ug/kg dry ND % 1,1-Dichloroethene ND ug/kg dry ND % cis-1,2-dichloroethene ND ug/kg dry ND % trans-1,2-dichloroethene ND ug/kg dry ND % 1,2-Dichloropropane ND ug/kg dry ND % 1,3-Dichloropropane ND ug/kg dry ND % 2,2-Dichloropropane ND ug/kg dry ND % 1,1-Dichloropropene ND ug/kg dry ND % cis-1,3-dichloropropene ND ug/kg dry ND % trans-1,3-dichloropropene ND ug/kg dry ND % Ethylbenzene ug/kg dry % Hexachlorobutadiene ND ug/kg dry ND % 2-Hexanone ND ug/kg dry ND % Isopropylbenzene ug/kg dry % 4-Isopropyltoluene ND ug/kg dry ND % Methylene chloride ND ug/kg dry ND % 4-Methyl-2-pentanone (MiBK) ND ug/kg dry ND % Methyl tert-butyl ether ND ug/kg dry ND % (MTBE) Naphthalene ND ug/kg dry ND % n-propylbenzene ug/kg dry % V-15 Philip Nerenberg, Lab Director Page 48 of 73

125 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Duplicate ( DUP2) Prepared: 07/02/18 16:58 Analyzed: 07/02/18 21:45 Styrene QC Source Sample: Non-SDG (A8G ) 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % Surr: 1,4-Difluorobenzene (Surr) Recovery: 98 % s: % Dilution: 1x Toluene-d8 (Surr) 99 % % 4-Bromofluorobenzene (Surr) 103 % % V-15 Matrix Spike ( MS1) Prepared: 07/02/18 12:24 Analyzed: 07/02/18 16:22 QC Source Sample: Non-SDG (A8G ) V A/8260C Acetone Acrylonitrile Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone (MEK) ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % Philip Nerenberg, Lab Director Page 49 of 73

126 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Matrix Spike ( MS1) Prepared: 07/02/18 12:24 Analyzed: 07/02/18 16:22 V-15 QC Source Sample: Non-SDG (A8G ) n-butylbenzene ug/kg dry ND % sec-butylbenzene ug/kg dry ND % tert-butylbenzene ug/kg dry ND % Carbon disulfide ug/kg dry ND % Carbon tetrachloride ug/kg dry ND % Chlorobenzene ug/kg dry ND % Chloroethane ug/kg dry ND % Q-54e Chloroform ug/kg dry ND % Chloromethane ug/kg dry ND % Chlorotoluene ug/kg dry ND % Chlorotoluene ug/kg dry ND % Dibromochloromethane ug/kg dry ND % ,2-Dibromo-3-chloropropane ug/kg dry ND % ,2-Dibromoethane (EDB) ug/kg dry ND % Dibromomethane ug/kg dry ND % ,2-Dichlorobenzene ug/kg dry ND % ,3-Dichlorobenzene ug/kg dry ND % ,4-Dichlorobenzene ug/kg dry ND % Dichlorodifluoromethane ug/kg dry ND % ,1-Dichloroethane ug/kg dry ND % ,2-Dichloroethane (EDC) ug/kg dry ND % ,1-Dichloroethene ug/kg dry ND % cis-1,2-dichloroethene ug/kg dry ND % trans-1,2-dichloroethene ug/kg dry ND % ,2-Dichloropropane ug/kg dry ND % ,3-Dichloropropane ug/kg dry ND % ,2-Dichloropropane ug/kg dry ND % Q-54 1,1-Dichloropropene ug/kg dry ND % cis-1,3-dichloropropene ug/kg dry ND % trans-1,3-dichloropropene ug/kg dry ND % Ethylbenzene ug/kg dry ND % Hexachlorobutadiene ug/kg dry ND % Hexanone ug/kg dry ND % Philip Nerenberg, Lab Director Page 50 of 73

127 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Volatile Organic Compounds by EPA 5035A/8260C Analyte Detection Units Dilution Spike Amount Source s Batch EPA 5035A Soil Matrix Spike ( MS1) Prepared: 07/02/18 12:24 Analyzed: 07/02/18 16:22 QC Source Sample: Non-SDG (A8G ) Isopropylbenzene 4-Isopropyltoluene Methylene chloride 4-Methyl-2-pentanone (MiBK) Methyl tert-butyl ether (MTBE) Naphthalene n-propylbenzene Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene Vinyl chloride m,p-xylene o-xylene ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % Surr: 1,4-Difluorobenzene (Surr) Recovery: 100 % s: % Dilution: 1x Toluene-d8 (Surr) 98 % % 4-Bromofluorobenzene (Surr) 102 % % V-15 Philip Nerenberg, Lab Director Page 51 of 73

128 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3546 Soil Blank ( BLK1) Prepared: 07/02/18 07:13 Analyzed: 07/03/18 08:53 EPA 8082A Aroclor 1016 Aroclor 1221 Aroclor 1232 Aroclor 1242 Aroclor 1248 Aroclor 1254 Aroclor 1260 ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet Surr: Decachlorobiphenyl (Surr) Recovery: 88 % s: % Dilution: 1x C-07 LCS ( BS1) Prepared: 07/02/18 07:13 Analyzed: 07/03/18 09:11 EPA 8082A Aroclor 1016 Aroclor ug/kg wet % ug/kg wet % Surr: Decachlorobiphenyl (Surr) Recovery: 90 % s: % Dilution: 1x C-07 Duplicate ( DUP1) Prepared: 07/02/18 07:14 Analyzed: 07/03/18 10:43 QC Source Sample: HA (A8F ) C-07 EPA 8082A Aroclor 1016 Aroclor 1221 Aroclor 1232 Aroclor 1242 Aroclor 1248 Aroclor 1254 Aroclor 1260 ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % ND ug/kg dry ND % Surr: Decachlorobiphenyl (Surr) Recovery: 96 % s: % Dilution: 1x Matrix Spike ( MS1) Prepared: 07/02/18 07:13 Analyzed: 07/03/18 11:56 QC Source Sample: HA (A8F ) C-07 EPA 8082A Aroclor 1016 Aroclor ug/kg dry ND % ug/kg dry ND % Philip Nerenberg, Lab Director Page 52 of 73

129 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3546 Soil Matrix Spike ( MS1) Prepared: 07/02/18 07:13 Analyzed: 07/03/18 11:56 QC Source Sample: HA (A8F ) Surr: Decachlorobiphenyl (Surr) Recovery: 91 % s: % Dilution: 1x C-07 Philip Nerenberg, Lab Director Page 53 of 73

130 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3546 Soil Blank ( BLK1) Prepared: 07/02/18 10:09 Analyzed: 07/02/18 15:28 EPA 8270D (SIM) Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet ND ug/kg wet Surr: 2-Fluorobiphenyl (Surr) Recovery: 75 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 95 % % LCS ( BS1) Prepared: 07/02/18 10:09 Analyzed: 07/02/18 15:54 EPA 8270D (SIM) Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % Philip Nerenberg, Lab Director Page 54 of 73

131 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3546 Soil LCS ( BS1) Prepared: 07/02/18 10:09 Analyzed: 07/02/18 15:54 Dibenz(a,h)anthracene Dibenzofuran Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % ug/kg wet % Surr: 2-Fluorobiphenyl (Surr) Recovery: 80 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 88 % % Duplicate ( DUP1) Prepared: 07/02/18 10:09 Analyzed: 07/02/18 22:03 QC Source Sample: Non-SDG (A8F ) Acenaphthene ND ug/kg dry ND % Acenaphthylene ND ug/kg dry ND % Anthracene ND ug/kg dry ND % Benz(a)anthracene ug/kg dry % M-05, Q-04 Benzo(a)pyrene ug/kg dry % Benzo(b)fluoranthene ug/kg dry % M-05 Benzo(k)fluoranthene ND ug/kg dry *** 30% Q-04 Benzo(g,h,i)perylene ug/kg dry % Chrysene ug/kg dry % M-05, Q-04 Dibenz(a,h)anthracene ND ug/kg dry ND % Dibenzofuran ND ug/kg dry ND % Fluoranthene ug/kg dry % Q-04 Fluorene ND ug/kg dry ND % Indeno(1,2,3-cd)pyrene ug/kg dry % 1-Methylnaphthalene ND ug/kg dry ND % 2-Methylnaphthalene ND ug/kg dry ND % Naphthalene ND ug/kg dry ND % Phenanthrene ug/kg dry % Q-04 Pyrene ug/kg dry % Q-04 Philip Nerenberg, Lab Director Page 55 of 73

132 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3546 Soil Duplicate ( DUP1) Prepared: 07/02/18 10:09 Analyzed: 07/02/18 22:03 QC Source Sample: Non-SDG (A8F ) Surr: 2-Fluorobiphenyl (Surr) Recovery: 85 % s: % Dilution: 20x p-terphenyl-d14 (Surr) 93 % % Matrix Spike ( MS1) Prepared: 07/02/18 10:09 Analyzed: 07/02/18 22:29 QC Source Sample: Non-SDG (A8F ) EPA 8270D (SIM) Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry % ug/kg dry % ug/kg dry % ug/kg dry % ug/kg dry % ug/kg dry % ug/kg dry ND % ug/kg dry ND % ug/kg dry % ug/kg dry ND % ug/kg dry % ug/kg dry ND % ug/kg dry ND % ug/kg dry ND % ug/kg dry % ug/kg dry % Surr: 2-Fluorobiphenyl (Surr) Recovery: 85 % s: % Dilution: 20x p-terphenyl-d14 (Surr) 91 % % Philip Nerenberg, Lab Director Page 56 of 73

133 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3510C (Acid Extraction) Water Blank ( BLK1) Prepared: 07/02/18 10:53 Analyzed: 07/02/18 14:59 EPA 8270D (SIM) Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene Dibenz(a,h)anthracene Dibenzofuran Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l ND ug/l Surr: 2-Fluorobiphenyl (Surr) Recovery: 62 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 90 % % LCS ( BS1) Prepared: 07/02/18 10:53 Analyzed: 07/02/18 15:25 EPA 8270D (SIM) Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(g,h,i)perylene Chrysene ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Philip Nerenberg, Lab Director Page 57 of 73

134 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3510C (Acid Extraction) Water LCS ( BS1) Prepared: 07/02/18 10:53 Analyzed: 07/02/18 15:25 Dibenz(a,h)anthracene Dibenzofuran Fluoranthene Fluorene Indeno(1,2,3-cd)pyrene 1-Methylnaphthalene 2-Methylnaphthalene Naphthalene Phenanthrene Pyrene ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % ug/l % Surr: 2-Fluorobiphenyl (Surr) Recovery: 70 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 90 % % LCS Dup ( BSD1) Prepared: 07/02/18 10:53 Analyzed: 07/02/18 15:52 EPA 8270D (SIM) Acenaphthene ug/l % 16 30% Acenaphthylene ug/l % 16 30% Anthracene ug/l % 11 30% Benz(a)anthracene ug/l % 2 30% Benzo(a)pyrene ug/l % 2 30% Benzo(b)fluoranthene ug/l % 1 30% Benzo(k)fluoranthene ug/l % % Benzo(g,h,i)perylene ug/l % 3 30% Chrysene ug/l % 3 30% Dibenz(a,h)anthracene ug/l % 6 30% Dibenzofuran ug/l % 15 30% Fluoranthene ug/l % 4 30% Fluorene ug/l % 14 30% Indeno(1,2,3-cd)pyrene ug/l % 4 30% 1-Methylnaphthalene ug/l % 16 30% 2-Methylnaphthalene ug/l % 16 30% Naphthalene ug/l % 15 30% Phenanthrene ug/l % 12 30% Pyrene ug/l % 5 30% Q-19 Philip Nerenberg, Lab Director Page 58 of 73

135 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3510C (Acid Extraction) Water LCS Dup ( BSD1) Prepared: 07/02/18 10:53 Analyzed: 07/02/18 15:52 Surr: 2-Fluorobiphenyl (Surr) Recovery: 62 % s: % Dilution: 1x p-terphenyl-d14 (Surr) 94 % % Q-19 Philip Nerenberg, Lab Director Page 59 of 73

136 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3051A Soil Blank ( BLK1) Prepared: 07/02/18 13:57 Analyzed: 07/03/18 12:17 EPA 6020A Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Selenium Silver Thallium Zinc ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet ND mg/kg wet LCS ( BS1) Prepared: 07/02/18 13:57 Analyzed: 07/03/18 12:22 EPA 6020A Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Selenium Silver Thallium Zinc mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % mg/kg wet % Duplicate ( DUP1) Prepared: 07/02/18 13:57 Analyzed: 07/03/18 12:35 QC Source Sample: Non-SDG (A8F ) Antimony ND mg/kg dry ND % Philip Nerenberg, Lab Director Page 60 of 73

137 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3051A Soil Duplicate ( DUP1) Prepared: 07/02/18 13:57 Analyzed: 07/03/18 12:35 QC Source Sample: Non-SDG (A8F ) Arsenic mg/kg dry % Beryllium mg/kg dry % Cadmium mg/kg dry % Chromium mg/kg dry % Copper mg/kg dry % Lead mg/kg dry % Mercury ND mg/kg dry ND % Nickel mg/kg dry % Selenium ND mg/kg dry ND % Silver ND mg/kg dry ND % Thallium ND mg/kg dry *** 40% Q-05 Zinc mg/kg dry % Matrix Spike ( MS1) Prepared: 07/02/18 13:57 Analyzed: 07/03/18 12:40 QC Source Sample: Non-SDG (A8F ) EPA 6020A Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury Nickel Selenium Silver Thallium Zinc mg/kg dry ND % Q mg/kg dry % mg/kg dry % mg/kg dry % mg/kg dry % mg/kg dry % mg/kg dry % mg/kg dry ND % mg/kg dry % mg/kg dry ND % Q mg/kg dry ND % mg/kg dry ND % mg/kg dry % Q-04 Post Spike ( PS1) Prepared: 07/02/18 13:57 Analyzed: 07/05/18 13:48 QC Source Sample: Post Spike (A8F ) Philip Nerenberg, Lab Director Page 61 of 73

138 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Total Metals by EPA 6020 (ICPMS) Analyte Detection Units Dilution Spike Amount Source s Batch EPA 3051A Soil Post Spike ( PS1) Prepared: 07/02/18 13:57 Analyzed: 07/05/18 13:48 QC Source Sample: Post Spike (A8F ) EPA 6020A Antimony Selenium ug/l % ug/l % --- Q-01 Philip Nerenberg, Lab Director Page 62 of 73

139 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Percent Dry Weight Analyte Detection Units Dilution Spike Amount Source s Batch Total Solids (Dry Weight) Soil Duplicate ( DUP1) Prepared: 07/03/18 09:22 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8F ) % Solids % by Weight % Duplicate ( DUP2) Prepared: 07/03/18 09:22 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8F ) % Solids % by Weight % Duplicate ( DUP3) Prepared: 07/03/18 09:22 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8F ) % Solids % by Weight % Duplicate ( DUP4) Prepared: 07/03/18 09:22 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8F ) % Solids % by Weight % Duplicate ( DUP5) Prepared: 07/03/18 09:22 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8G ) % Solids % by Weight % Duplicate ( DUP6) Prepared: 07/03/18 09:22 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8G ) % Solids % by Weight % Duplicate ( DUP7) Prepared: 07/03/18 19:10 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8G ) % Solids % by Weight % Duplicate ( DUP8) Prepared: 07/03/18 19:10 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8G ) % Solids % by Weight % Philip Nerenberg, Lab Director Page 63 of 73

140 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALITY CONTROL (QC) SAMPLE RESULTS Percent Dry Weight Analyte Detection Units Dilution Spike Amount Source s Batch Total Solids (Dry Weight) Soil Duplicate ( DUP9) Prepared: 07/03/18 19:32 Analyzed: 07/05/18 08:47 QC Source Sample: Non-SDG (A8G ) % Solids % by Weight % No Client related Batch QC samples analyzed for this batch. See notes page for more information. Philip Nerenberg, Lab Director Page 64 of 73

141 , LLC EPA ID: OR01039 Project: Devil's Lake Lincoln City Project Number: Report ID: Portland, OR Project Manager: Merideth D'Andrea A8F SAMPLE PREPARATION INFORMATION Diesel and/or Oil Hydrocarbons by NWTPH-Dx Prep: EPA 3510C (Fuels/Acid Ext.) Sample Default RL Prep Lab Number Batch: A8F Matrix Water Method NWTPH-Dx Sampled 06/28/18 14:30 Prepared 07/02/18 07:01 Initial/Final 350mL/2mL Initial/Final 1000mL/2mL Factor 2.86 Prep: EPA 3546 (Fuels) Sample Default RL Prep Lab Number Batch: A8F Matrix Soil Method NWTPH-Dx Sampled 06/28/18 13:00 Prepared 07/06/18 09:53 Initial/Final 10.68g/5mL Initial/Final 10g/5mL Factor 0.94 A8F Soil NWTPH-Dx 06/28/18 15:00 07/06/18 09: g/5mL 10g/5mL 0.95 Gasoline Range Hydrocarbons (Benzene through Naphthalene) by NWTPH-Gx Prep: EPA 5030B Sample Default RL Prep Lab Number Batch: A8F RE1 Matrix Water Method NWTPH-Gx (MS) Sampled 06/28/18 14:30 Prepared 07/02/18 09:33 Initial/Final 5mL/5mL Initial/Final 5mL/5mL Factor 1.00 Prep: EPA 5035A Sample Default RL Prep Lab Number Batch: A8F Matrix Soil Method NWTPH-Gx (MS) Sampled 06/28/18 13:00 Prepared 06/28/18 13:00 Initial/Final 6.42g/5mL Initial/Final 5g/5mL Factor 0.78 A8F Soil NWTPH-Gx (MS) 06/28/18 15:00 06/28/18 15: g/5mL 5g/5mL 0.85 Prep: Total Solids (Dry Weight) Lab Number Batch: Percent Dry Weight Sample Default RL Prep Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A8F Soil EPA 8000C 06/28/18 13:00 07/03/18 09:22 NA A8F Soil EPA 8000C 06/28/18 15:00 07/03/18 09:22 NA Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Prep: EPA 3510C (Acid Extraction) Sample Default RL Prep Lab Number Batch: A8F RE1 Matrix Water Method EPA 8270D (SIM) Sampled 06/28/18 14:30 Prepared 07/02/18 10:53 Initial/Final 710mL/2mL Initial/Final 1000mL/2mL Factor 1.41 Philip Nerenberg, Lab Director Page 65 of 73

142 , LLC EPA ID: OR01039 Project: Devil's Lake Lincoln City Project Number: Report ID: Portland, OR Project Manager: Merideth D'Andrea A8F SAMPLE PREPARATION INFORMATION Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Prep: EPA 3546 Sample Default RL Prep Lab Number Batch: A8F Matrix Soil Method EPA 8270D (SIM) Sampled 06/28/18 13:00 Prepared 07/02/18 10:09 Initial/Final 11.65g/5mL Initial/Final 10g/5mL Factor 0.86 A8F Soil EPA 8270D (SIM) 06/28/18 15:00 07/02/18 10: g/5mL 10g/5mL 0.94 Polychlorinated Biphenyls by EPA 8082A Prep: EPA 3546 Sample Default RL Prep Lab Number Batch: A8F Matrix Soil Method EPA 8082A Sampled 06/28/18 13:00 Prepared 07/02/18 07:13 Initial/Final 11.79g/5mL Initial/Final 10g/5mL Factor 0.85 A8F Soil EPA 8082A 06/28/18 15:00 07/02/18 07: g/5mL 10g/5mL 0.85 Total Metals by EPA 6020 (ICPMS) Prep: EPA 3051A Sample Default RL Prep Lab Number Batch: A8F Matrix Soil Method EPA 6020A Sampled 06/28/18 13:00 Prepared 07/02/18 13:57 Initial/Final 0.51g/50mL Initial/Final 0.5g/50mL Factor 0.98 A8F Soil EPA 6020A 06/28/18 15:00 07/02/18 13:57 0.5g/50mL 0.5g/50mL 1.00 Volatile Organic Compounds by EPA 5035A/8260C Prep: EPA 5035A Sample Default RL Prep Lab Number Batch: A8F Matrix Soil Method 5035A/8260C Sampled 06/28/18 13:00 Prepared 06/28/18 13:00 Initial/Final 6.42g/5mL Initial/Final 5g/5mL Factor 0.78 A8F Soil 5035A/8260C 06/28/18 15:00 06/28/18 15: g/5mL 5g/5mL 0.85 Volatile Organic Compounds by EPA 8260C Prep: EPA 5030B Sample Default RL Prep Lab Number Batch: A8F RE1 Matrix Water Method EPA 8260C Sampled 06/28/18 14:30 Prepared 07/02/18 09:33 Initial/Final 5mL/5mL Initial/Final 5mL/5mL Factor 1.00 Philip Nerenberg, Lab Director Page 66 of 73

143 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F QUALIFIER DEFINITIONS Client Sample and Quality Control (QC) Sample Qualifier Definitions: B-02 Analyte detected in an associated blank at a level between one-half the MRL and the MRL. (See and Conventions below.) C-07 Extract has undergone Sulfuric Acid Cleanup by EPA 3665A, Sulfur Cleanup by EPA 3660B, and Florisil Cleanup by EPA 3620B in order to minimize matrix interference. E-05 Estimated. Initial Calibration Verification (ICV) failed high. No affect on non-detect results. F-17 No fuel pattern detected. The Diesel result represents carbon range C12 to C24, and the Oil result represents >C24 to C40. M-05 Estimated results. Peak separation for structural isomers is insufficient for accurate quantification. Q-01 Spike recovery and/or is outside acceptance limits. Q-04 Spike recovery and/or is outside control limits due to a non-homogeneous sample matrix. Q-05 Analyses are not controlled on values from sample and duplicate concentrations that are below 5 times the reporting level. Q-19 Blank Spike Duplicate (BSD) sample analyzed in place of Matrix Spike/Duplicate samples due to limited sample amount available for analysis. Q-54 Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by +1.7%. The results are reported as Estimated Values. Q-54a Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by +12%. The results are reported as Estimated Values. Q-54b Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by +16%. The results are reported as Estimated Values. Q-54c Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by +5%. The results are reported as Estimated Values. Q-54d Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by +6%. The results are reported as Estimated Values. Q-54e Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by -1.7%. The results are reported as Estimated Values. Q-54f Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by -2%. The results are reported as Estimated Values. Q-54g Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by -3%. The results are reported as Estimated Values. Q-54h Daily Continuing Calibration Verification recovery for this analyte failed the +/-20% criteria listed in EPA method 8260C/8270D by -4%. The results are reported as Estimated Values. Q-55 Daily CCV/LCS recovery for this analyte was below the +/-20% criteria listed in EPA 8260C, however there is adequate sensitivity to ensure detection at the reporting level. Q-56 Daily CCV/LCS recovery for this analyte was above the +/-20% criteria listed in EPA 8260C Philip Nerenberg, Lab Director Page 67 of 73

144 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F R-02 The for this analyte has been raised to account for interference from coeluting organic compounds present in the sample. S-06 Surrogate recovery is outside of established control limits. V-01 Sample aliquot taken from VOA vial with headspace (air bubble greater than 6 mm diameter). V-04 Composite of VOA vials analyzed due to sediment in vials. V-15 Sample aliquot was subsampled from the sample container. The subsampled aliquot was preserved in the laboratory within 48 hours of sampling. Philip Nerenberg, Lab Director Page 68 of 73

145 , LLC EPA ID: OR01039 Project: Devil's Lake Lincoln City Portland, OR Project Number: Project Manager: Merideth D'Andrea Report ID: A8F REPORTING NOTES AND CONVENTIONS: Abbreviations: DET Analyte DETECTED at or above the detection or reporting limit. ND Analyte NOT DETECTED at or above the detection or reporting limit. NR Not Reported Relative Percent Difference Detection s: of Detection (LOD) s of Detection (LODs) are normally set at a level of one half the validated of Quantitation (LOQ). If no value is listed ('-----'), then the data has not been evaluated below the. s: of Quantitation (LOQ) Validated s of Quantitation (LOQs) are reported as the s for all analyses where the LOQ, MRL, PQL or CRL are requested. The LOQ represents a level at or above the low point of the calibration curve, that has been validated according to Apex Laboratories' comprehensive LOQ policies and procedures. Conventions: Basis: s for soil samples are generally reported on a 100% dry weight basis. The Basis is listed following the units as dry, wet, or (blank) designation. dry Sample results and s are reported on a dry weight basis. (i.e. ug/kg dry) See Percent Solids section for details of dry weight analysis. wet Sample results and s for this analysis are normally dry weight corrected, but have not been modified in this case. s without 'wet' or 'dry' designation are not normally dry weight corrected. These results are considered 'As Received'. QC Source: In cases where there is insufficient sample provided for Sample Duplicates and/or Matrix Spikes, a Lab Control Sample Duplicate (LCS Dup) may be analyzed to demonstrate accuracy and precision of the extraction batch. Non-Client Batch QC Samples (Duplicates and Matrix Spike/Duplicates) may not be included in this report. Please request a Full QC report if this data is required. Miscellaneous : --- QC results are not applicable. For example, % Recoveries for Blanks and Duplicates, % for Blanks, Blank Spikes and Matrix Spikes, etc. *** Used to indicate a possible discrepancy with the Sample and Sample Duplicate results when the % is not available. In this case, either the Sample or the Sample Duplicate has a reportable result for this analyte, while the other is Non Detect (ND). Blanks: Standard practice is to evaluate the results from Blank QC Samples down to a level equal to ½ the (RL). -For Blank hits falling between ½ the RL and the RL (J flagged hits), the associated sample and QC data will receive a B-02 qualifier. -For Blank hits above the RL, the associated sample and QC data will receive a B qualifier, per ' Blank Policy. For further details, please request a copy of this document. Philip Nerenberg, Lab Director Page 69 of 73

146 , LLC EPA ID: OR01039 Project: Devil's Lake Lincoln City Portland, OR Project Number: Project Manager: Merideth D'Andrea Report ID: A8F REPORTING NOTES AND CONVENTIONS (Cont.): Blanks (Cont.): Sample results flagged with a 'B' or 'B-02' qualifier are potentially biased high if the blank results are less than ten times the level found in the blank for inorganic analyses, or less than five times the level found in the blank for organic analyses. B and B-02 qualifications are only applied to sample results detected above the Level. Preparation : Mixed Matrix Samples: Water Samples: Water samples containing significant amounts of sediment are decanted or separated prior to extraction, and only the water portion analyzed, unless otherwise directed by the client. Soil and Sediment Samples: Soil and Sediment samples containing significant amounts of water are decanted prior to extraction, and only the solid portion analyzed, unless otherwise directed by the client. Sampling and Preservation : Certain regulatory programs, such as National Pollutant Discharge Elimination System (NPDES), require that activities such as sample filtration (for dissolved metals, orthophosphate, hexavalent chromium, etc.) and testing of short hold analytes (ph, Dissolved Oxygen, etc.) be performed in the field (on-site) within a short time window. In addition, sample matrix spikes are required for some analyses, and sufficient volume must be provided, and billable site specific QC requested, if this is required. All regulatory permits should be reviewed to ensure that these requirements are being met. Data users should be aware of which regulations pertain to the samples they submit for testing. If related sample collection activities are not approved for a particular regulatory program, results should be considered estimates. will qualify these analytes according to the most stringent requirements, however results for samples that are for non-regulatory purposes may be acceptable. Samples that have been filtered and preserved at per client request are listed in the preparation section of the report with the date and time of filtration listed. Philip Nerenberg, Lab Director Page 70 of 73

147 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F LABORATORY ACCREDITATION INFORMATION TNI Certification ID: OR (Primary Accreditation) - EPA ID: OR01039 All methods and analytes reported from work performed at are included on ' ORELAP Scope of Certification, with the exception of any analyte(s) listed below: Matrix Analysis TNI_ID Analyte TNI_ID Cert? All reported analytes are included in ' current ORELAP scope. Secondary Accreditations also maintains reciprocal accreditation with non-tni states (Washington DOE), as well as other state specific accreditations not listed here. Subcontract Laboratory Accreditations Subcontracted data falls outside of ' Scope of Accreditation. Please see the Subcontract Laboratory report for full details, or contact your Project Manager for more information. Field Testing Parameters s for Field Tested data are provded by the client or sampler, and fall outside of ' Scope of Accreditation. Philip Nerenberg, Lab Director Page 71 of 73

148 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F Philip Nerenberg, Lab Director Page 72 of 73

149 , LLC EPA ID: OR01039 Portland, OR Project: Project Number: Project Manager: Devil's Lake Lincoln City Merideth D'Andrea Report ID: A8F Philip Nerenberg, Lab Director Page 73 of 73

150 ATTACHMENT C DATA VALIDATION MEMORANDA (APEX LABORATORIES LLC)