Targeted Brownfield Assessment Former Bennett's Car Dealership

EPA/DEQ Site Assessment Cooperative Agreement #V-990519-02

October 11, 2001

Submitted To: Mark Ader U.S. Environmental Protection Agency 1200 Sixth Avenue Seattle, WA 98101 Targeted Brownfield Assessment Report

Former Dennett's Car Dealership Burns,

Revision: I

Prepared By:

Kathleen Robertson, R.G. Oregon Department of Environmental Quality

October II, 200 I

Burns TBA Rcport.Joc October II, 200 I TABLE OF CONTENTS

Section Page 1.0 INTRODUCTION ...... 1 1.1 Pmpose and Scope ...... :...... I 2.0 SITE DESCRIPTION, OPERATIONAL HISTORY, AND WASTE CHARACTERISTICS ...... I 2.1 Site Description and Ownership History ...... ) 2.2 Site Location and lnfonnation ...... 1 2.3 Regulatory History ...... I 2.4 Source Areas and Waste Charactcristics ...... 2 3.0 SAMPLING ACTIVITIES ...... 2 3.1 Sample Collection Methods and Rationale ...... 2 3.2 Laboratory Analytical Methods ...... : ...... 2 3.3 Soil Analytical Rcsults ...... 2 4.0 REMEDIAL ACTIVITIES ...... 3 5.0 GROUNDWATER, SURFACE WATER, SOIL EXPOSURE, AND AIR PATHWA YS ...... 3 5.1 Groundwater and Smface Water Pathways ...... 3 5.2 Soil Exposure and Air Pathways ...... 4 6.0 CONCLUSIONS AND RECOMMENDATION ...... 4 7.0 REFERENCES ...... 5

FIGURES Figure I Site Location Map Figure 2 Site Photographs Figure 3 Soil Sample Location Map

TABLES Table I Sample Key Table 2 Soil Analytical Data- VOCs/SVOCs Table 3 Soil Analytical Data- PCBs, Pesticides Table 4 Soil Analytical Data- Metals Table 5 Soil Analytical Data- Petroleum Hydrocarbons

APPENDICES Appendix A TBA Photograph Log Appendix B TBA Analytical Report Appendix C Petroleum Hydrocarbon Analytical Report Appendix D Soil and UST Disposal Receipts

llmns TllA Report. doc ii October II, 200 I 1.0 INTRODUCTION This Targeted Brownfield Assessment (TBA) was performed by the Oregon Department of Environmental Quality (DEQ's) Eastern Region Site Assessment Program, under EPA Site Assessment Cooperative Agreement # V -990519-02. The Former Bennett's Car Dealership is located in the downtown area of the City of Burns, located in Harney County, Oregon (Figure I).

1.1 Purpose and Scope The purpose of the TBA was to evaluate potential areas of concern based on historic site uses. The information will be used to assist the site owner in re-development of the site.

This TBA is based on readily available information about the site and investigation activities. The scope of this investigation included review of file information, off-site and on-site reconnaissance, and on-site sampling.

2.0 SITE DESCRIPTION, OPERATIONAL HISTORY, AND WASTE CHARACTERISTICS The following section details the site background, location, historic operations, and surrounding properties. A site location map is presented as Figure I.

2.1 Site Description and Ownership History The site was a car dealership from as early as the 1920's to the late 1970's. Operations at the site included auto body repair, auto maintenance and repair shop, and gasoline fueling. The facility was named Bennett Motors and owned by Stan Bennett, who sold the property to Ray Cole, who also operated the facility as a car dealership. The current owners, C & F Investment Group, purchased the property from Cole in April 1985. The property was vacant and not in use at the time of purchase. The current owners remodeled the building into commercial (retail) use.

The site is primarily located in a commercial area with some residential properties. The building covers approximately one-third of the site. Asphalt or concrete slabs from former structures cover most of the remaining surface area. Site pictures are presented in Figure 2. Average annual precipitation for the area is 12.6 inches (data from 1960-1991, Burns, OR- Oregon Climate Services).

2.2 Site Location and Inforniation Site Name: Bennett's Car Dealership (Fonner) Location: 609 North Broadway, Burns, Oregon Latitude: North 43 degrees, 35 minutes, and 27.8 seconds Longitude: West 119 degrees, 03 minutes, and !0.2 seconds Legal Description: Township 23S, Range 31 E, Section 7 County: Harney Site Owner: C&F Investment Group P.O. Box 418 Burns, OR 97720 Phone (54!) 573-6441 FAX (54!) 573-7917 Site Contact: Randy Fulton

2.3 Regulatory History Previous site assessment activities have not been performed at the site.

Burns TBA Report.doc October II, 200 I 2.4 Source Areas aud Waste Characteristics Potential ~ource areas at the site are based on historic activities. Potential source areas include hoists and drains in the former shop area, former service station fueling f.:1cilities, former paint shop.

3.0 SAMPLING ACTIVITIES On May 30 200 I, nine test pits and two soil borings were installed at the site. DEQ collected one soil sample from each of the nine test pits. Eight of the soil samples were collected from areas of concern and one sample was collected from a background location. The soil borings were installed, using DEQ's PowerProbe, to evaluate groundwater conditions at the site. However, the borings met with refusal prior to encounte1·ing groundwater and DEQ was unable to obtain any groundwater samples rrom the site.

3.1 Sample Collection Methods and Rationale Sample locations were selected to define potential source areas based on the historic use of the site. DEQ followed the EPA-approved Sampling and Quality Assurance Plan (SQAP) dated May 9, 2001 during the site investigation. All soil samples were collected with disposable sampling tools. All soil samples were analyzed for volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), pesticides, PCBs, and metals.

A sample key that documents all samples collected at the site is provided as Table I. The sample key provides a cross reference between the sample location, laboratory sample number, the matrix, and date collected. Soil sample locations are presented in Figure 3. A photograph log of site activities is presented in Appendix A.

3.2 Laboratory Analytical Methods All soil samples collected were analyzed for VOCs (OLM04.2), for SVOCs (OLM04.2), for pesticides and PCBs (OLM04.2), and for Target Analyte List (TAL) Metals (ILM04.1).

All soil samples were analyzed by EPA Contract Laboratories. Soil samples for VOCs, SVOCs, PCBs, and pesticide analysis were analyzed by Ceimic Corporation of Narragansett, Rhode Island. Soil samples for metal analysis were analyzed by Datachem Laboratories of Salt Lake City, Utah. Complete analytical reports are included in Appendix B. Tables summarizing analytical data are included in this TBA rep01t as follows:

• Table2 Soil Analytical Data VOCs/SVOCs • Table3 Soil Analytical Data Pesticides, PCBs • Table4 Soil Analytical Data Metals 3.3 Soil Aualytical Results VOCs and SVOCs concentrations were detected primarily in the soil sample from test pit TP-3. VOCs and SVOCs concentrations detected in the other eight samples were related to common laboratory contaminants such as methylene chloride and are therefore not considered to be representative of site conditions. VOCs and SVOCs concentrations did not exceed residential or industrial EPA Region 9 Preliminary Remediation Goals (PRGs) in any of the nine soil samples with the exception of I, I ,2-trichloroethane in the soil sample fi·om test pit TP-3. The soil sample from test pit TP-3 contained a 1,1,2-trichloroethane concentration of2,800 parts per billion (ppb) which exceeds both the residential and industrial EPA Region 9 PRG.

Aroclor-1260,-a PCB congener, was detected in the soil samples from test pits TP-1 and TP-3 at 38 ppb and 150 ppb, respectively. These concentrations did not exceed residential or industrial EPA Region 9 PRGs. No other PCBs were detected.

Pesticides were detected only in soil samples from test pits TP-1 and TP-3. 4,4 '-DDT was detected in the soil sample from test pit TP-1 at 30 ppb. 4,4 '-ODD at 28 ppb, endrin at 17 ppb, and methoxychlor at 25 ppb were detected in the soil sample from test pit TP-3. All detected pesticides did not exceed their respective residential or industrial EPA Region 9 PRGs.

Burns Tl3A Report.doc 2 October I I, 200 I Concentrations of one or more of the TAL metals were detected in the nine soil samples analyzed. All detected concentrations of metals were less than residential and industrial EPA Region 9PRGs except for arsenic in all nine samples, iron in the soil sample from test pit TP-7, and lead in the soil sample from test pit TP-1. The iron concentration in the soil sample from test pit TP-7 at 25,300 mg/kg exceeded the residential EPA Region 9 PRO of 23,000 mg/kg but was less than the industrial PRO of 100,000 mg/kg. The lead concentration in soil sample from test pit TP-1 at 682 mg/kg exceeded the residential EPA Region 9 PRO of 400 mg/kg but was less than the industrial EPA Region 9 PRO of 750 mg/kg. Concentrations of arsenic detected in the nine soil samples ranged from 1.5 mg/kg to 2.8 mg/kg. All nine soils samples exceeded the residential EPA Region 9 PRO of0.39 mg/kg. Only the arsenic concentration from the soil sample from test pit TP-8 at 2.8 mg/kg exceeded the industrial EPA Region 9 PRO of 2. 7 mg/kg. The arsenic levels are consistent with naturally occurring concentrations in eastern Oregon and specifically Harney County soils. Concentrations of arsenic detected in soil samples are consistent with background levels and do not appear to be related with a release at the site.

4.0 REMEDIAL ACTIVITIES During the site assessment activities performed on May 30, 200 I, petroleum contaminated soil (PCS) was encountered during the excavation oftest pit TP-3. In addition, two steel product pipes were discovered and traced to the extent practical. During the delineation of the PCS, a steel underground storage tank (UST) was encountered. The UST was filled with water and had several holes in the UST's uncovered side. Two additional USTs were later discovered at the end of the product piping lines. The approximate locations of the USTs are included on Figure 3.

The property owner joined DEQ's Voluntary Cleanup Program and performed remedial actions. Three soil samples were collected rrom the PCS on June 7, 2001 to characterize the soil· for proper disposal. Concentrations of gasoline, diesel, and/or heavy oil were detected in one or more of the soils samples. Approximately 68 yards ofPCS and three USTs were removed from the site, in July 2001, to the Burns-Hines Landfill for proper disposal. Two soil samples were collected from the final excavations. Concentrations of gasoline, diesel, and/or heavy oil were not detected. Analysis of the characterization and confirmation samples where performed by Coffey Laboratories of Pendleton Oregon for the property owner. Analytical results are presented on Table 5. Analytical reports are included in Appendix C. PCS and UST disposal receipts are included in Appendix D.

5.0 GROUNDWATER, SURFACE WATER, SOIL EXPOSURE, AND AIR PATHWAYS This section discusses the groundwater migration, the surface water migration, the soil exposure, and the air migration pathways within the site's range of influence.

5.1 Groundwater and Surface Water Pathways The site is located in the Silvies River Basin, which is a sub-basin of the Malheur/Harney Lake Basiu. The Malheur/Harney Lake Basin is an enclosed drainage basin with no outlet. Malheur and Harney Lakes occupy the lowest portions of the basin. The lakes consist of interconnected shallow water bodies with extensive wetland areas around their margins. The Silvies River is located approximately Y,-mile east of the site. The Silvies River drains a p01iion of the Blue Mountains located north of the site. Upon entering the lower portion of the Malheur/Harney Lakes Basin, the Silvies River splits into distributaries before entering wetlands along the northern shore ofMalheur Lake. The Silvies River is a water quality-limited stream under Section 303(d) of the Clean Water Act for temperature.

The aquifer units are divided into the Basin-fill and alluvial aquifer which consists of the Quaternary alluvium, the underlying Volcanic and Sedimentary Aquifer which is composed of the Tertiary Volcanics, and the Basalt Aquifer which is composed of the Steens Mountain Basalt (USGS, 1985). Groundwater is within a few feet of the ground surface throughout most of the basin and is expected to flow to the south­ southeast from the site, towards the .

Nine domestic wells (DWs), registered with Oregon Water Resources Depmiment (WRD), are located within the same topographical section as the site. The wells range in depths from 40 feet below ground surface (bgs) to 210 feet bgs. Static water levels were reported from 1.8 feet bgs to 15 feet bgs.

Burns TBA Rcport.doc 3 October II, 200 I Groundwater was estimated to be encountered at the site at 6 feet below grade. However soil borings installed at the site to a total depth of I 0.5 feet below grade did not encounter groundwater. All soil borings and test pits encountered refusal at various depths below grade.

The presence of a hard silt layer over the site appears to have limited the migration of petroleum through the subsurface. With the removal of impacted soil in the vicinity of test pit TP-3, the source of potential impacts to the surface water and groundwater has been eliminated.

5.2 Soil Exposure and Air Pathways The site is located in the , which is in eastern portion of the High Lava Plains Geomorphic Region of Eastern Oregon (Orr et al., 1992). The High Lava Plains Region is bounded on the west by the Cascade Range, to the north by the Blue Mountains, and to the east by the Owyhee Upland. The High Lava Plains Region merges gradually with the Basin and Range Region, which extends south from Oregon to Mexico. In Oregon, the Basin and Range consists of narrow faulted mountain ranges with intervening basins.

The Harney Basin is at an altitude of approximately 4, I 00 feet above sea level. The basin is covered by up to 350 feet of Quaternary alluvium, and contains Malheur and Harney Lakes, which are shallow remnants of a much larger pluvial lake which occupied most of the basin during the Pleistocene. The Quaternary alluvium is underlain by up to 4,800 feet ofTet1iary volcanics, which are underlain by the Tet1iary age Steens Mountain Basalt. The basin has no outlet.

Soil encountered at the site consisted of black to brown silt to the total depth explored of I 0.5 feet below grade.

Land use in the vicinity of the site is primarily commercial with some residential homes. Based on the 1990 Census Data, 1,297 households are located within one-mile of the site, with a total estimated population of 2,649 persons. A total of2,320 households are located within five-miles of the site with a total population of 5,158 persons (EPA Region 10).

With the removal of impacted soil in the vicinity of test pit TP-3, the primary source of potential impacts to soil exposure and air pathways has been eliminated.

6.0 CONCLUSIONS AND RECOMMENDATIONS The site was a car dealership from as early as the 1920's to the late 1970's. The current owners purchased the property in April 1985. The property was vacant and not in use at the time of purchase. The current owners remodeled the building into commercial (retail) use. A small portion of the site building is still in use as retail space. A large portion of the building is unsuitable for occupancy and will be removed.

PCS and USTs identified initially during the TBA site assessment were subsequently removed by the property owner and properly disposed. These remedial actions, which occurred under the oversight ofDEQs Voluntary Cleanup Program, have eliminated source areas of contamination, and therefore eliminated potential direct-contact exposure pathways.

No further action is needed at the site.

Burns TBA Report. doc 4 October II, 2001 7.0 REFERENCES Oregon Department of Environmental Quality, May 9, 200 I, Sampling and Quality Assurance Plan. EPA Region I 0, Site Info Form, Seattle, Washington, http://www.cpa.gov/cgi-bin/r IO.procloc. Oregon Climate Services, Data Archives, Corvallis, Oregon, http:/!www.ocs.orst.edu/pub fip/climate data. Oregon Depmtment of Water Resources, Grid Que1y Application, Salem, Oregon, http: IIdeschutes. wrd. state. or .us/a pps/ gw /we II Iog. Orr, Elizabeth L., Orr, William N., & Baldwin, Ewart M., 1992, Geology of Oregon. U.S. Geological Survey, 1985, A Description ofAquifer Units in Eastem Oregon, Water-Resources Investigations Repmt 84-4095.

Burns TBA Report.doc 5 October II, 2001 (~ - - - · -~-·

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REFERENCE

USGS 7.5 Topographical Maps Burns, Oregon, 1960

SCALE 1 inch= 2,000 feet Quadrangle Location

Former Bennett's Car Dealership 609 Broadway FIGURE Burns, Oregon 1 SITE LOCATION MAP Looking northeast at the storefront at corner of Broadway and B Street.

Looking west along B Street at bay doors for the garage.

Looking west at former gasoline service station area of the site.

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Former· Bennett's Car Dealership 609 North Broadway FIGURE Burns, Oregon 2 SITE PHOTOGRAPHS EAST C STREET

...J :;2 LEGEND ~ Approximate Extent of 1 c ~ Excavation (typ Asphalt Parking Area * ~ Former Pump Test pit approximate ::;( Dispenser .. location and designation Underground ~ * Storage Tank (typ) ;;,:z-.r..r.~ GP-2 • Soil probe approximate -...... tL v.l ~.r.r...-w ======----~ ' location and designation ;7.D.?.r..J.i.1 ~~~~~~~

Concrete Slab eGP- 1

>­ < • ~ * 0 < Commercial Space Former Garage Area ~ o:l eGP-2 ::r: ~ 0 * z Partially Concrete Slab 0::: (l.l Removed 0 I Portion of ~ Building ::r: ~ * 0 • z

EAST B STREET

Former Bennett's Car Dealership 609 North Broadway FIGURE ~ Burns, Oregon If 3 NOT TO SCALE SOIL SAMPLE LOCATION MAP Table 1 -Sample Key Fonner Bennett's Car Dealership Burns, Oregon

Date Sample Sample Regional CLP LAB CLP LAB Matrix Collected Location Depth Tracking Number- Number- (feet) Number VOCs, SVOCs, Metal s Pesticides, PCBs

05/30/01 TPI(3) 3 01 224 100 JS208 MJS I44 s ..., 05/30/01 . TP2(3) .) 01224105 JS2 16 MJS I49 s 05/30/01 TP3(3.5) 4 01 224106 JS217 MJS 150 s 05/30/01 TP4(3.8) 3.8 0 1224104 JS212 MJSI48 s 05/30/0 1 TP5(5) 5 01224108 JS219 MJS I52 s 05/30/01 TP6(6) 6 01224 107 JS218 MJSI51 s 05/30/01 TP7(4.5) 4.5 01224103 JS211 MJS I47 s 05/30/01 TP8(5.5) 5.5 01224101 JS209 MJS I45 s 05/30/01 TP9(5.9) 5.9 0 1224 102 JS210 MJSI46 s 05/30/01 Trip Blank NA 01224109 JW665* NA w Notes: NA = Not Applicable or Not Analyzed for this parameter S=Soil W= Water * Trip Blank was only analyzed for VOCs

llurns T£3A Report Octo her I I , 200 I Table 2 - Soil Analytical Data - VOCs/SVOCs Former Bennen's Car Dealership Bums, Oregon

TP1(3) TP2(3) TP3(3.5) TP4(3.8) TP5(5) TP6(6) TP7(4.5) TP8(5.5) TP9(5.9) EPA Region 9 PRGs JS208 JS216 JS217 JS2 12 JS219 JS2 18 JS211 JS209 JS2!0 Residential Industrial 5/30/2001 5/30/2001 5/30/200I 5/30/200 I 5/30/200 I 5/30/200I 5/30/200I 5/30/2001 5/30/200 I ug/kg uglkg Parameters uglkg uglkg uglkg uglk.g uglkg uglk.g uglk.g uglk.g ug/kg

VOCs Benzene 12 u I3 u 300 J I I U I3 u 13 u 12 u 13 u 12 u 650 1,500 Cyclohexane 12 u 13 u 2,600 11 u I3 u I3 u 12 u 13 u 12 u I40,000 140,000 Ethy1benzene I2 u 13 u 3,600 11 u 13 u 13 u 12 u 13 u 12 u 230,000 230,000 Methy lcyclohexane 12 u 13 u 6,100 llU 13 u 13 u 12 u 13 u 12 u 2,600,000 8,800,000 I, 1,2-Trichloroethane I2 u 13 u 2,800 11 u 13 u 13 u 12 u 13 u 12 u 840 1,900 Toluene 12 u 13 u 140 J 11 u 13 u 13 u 12 u 13 u 12 u 520,000 520,000 Xylenes 12 u 13 u 30,000 11 u 13 u 13 u 12 u 13 u 12 u 210,000 210,000 All Other Compounds* ND ND ND ND ND ND ND ND ND

SVOCs 2-methylnaphthalene 7400 u 420 u 77000 380 u 2000 u 8400 u 380 u 400 u 430 u - - Naphthalene 7400 u 420 u 49000 J 380 u 2000 u 8400 u 380 u 400 u 430 u 56,000 190,000 All Other Compounds* ND ND ND ND ND ND NO ND NO Notes: PRGs = EPA Region 9 Preliminary Remediation Goals dated 2000 NA = PRG not assigned J = The analyte was positively identified. The associated numerical result is an estimate. ND = Not Detected U = The analyte was not detected at or above the reported result. B = The analyte was also found in the analytical method blank. * See analytical report for complete compound list and detection limits

Burns TBA Report October I l. 200 I Table 3 - Soil Analytical Data - PCBs/Pesticides Former Bennett's Car Dealership Bums, Oregon

TP1(3) TP2(3) TP3(3.5) TP4(3.8) TP5(5) TP6(6) TP7(4.5) TP8(5.5) TP9(5.9) J$208 J$216 J$217 J$212 J$219 JS2 18 J$2 11 J$209 JS210 Region 9 PRGs 5/30/2001 5/30/2001 5/30/2001 5/30/2001 5/30/2001 5/30/200 I 5/30/2001 5/30/2001 5/30/2001 Residential Industrial Parameters ug/kg uglkg uglkg uglkg ug/kg ug/kg uglkg ug/kg uglkg uglkg ug/kg

PCBs Aroclor- 1260 38 p 42 u 150 39 u 40 u 42 u 38 u 40 u 43 u 220 1,000 All Other Aroclor's* ND ND ND ND ND ND ND ND ND

Pesticides Aldrin 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 29 150 alpha-BHC 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 1.7 u 2.2 u 90 590 beta-BHC 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 320 2,100 alpha-Chlordane 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u NA NA delta-BHC 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 320 2,100 4.4'-DDD 15 p 4.2 u 28 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u 2,400 17,000 4,4'-DDE 5.7 p 4.2 u 6.2 p 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u 1,700 12,000 4,4'-DDT 30 4.2 u 6.2 p 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u 1,700 12,000 Dieldrin 3.7 u 4.2 u 4.9 u 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u 30 150 Endosulfan I 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 370,000 5,300,000 Endosulfan II 3.7 u 4.2 u 4.9 u 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u NA NA Endosulfan sulfate 3.7 u 4.2 u 4.9 u 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u NA NA Endrin 3.7 u 4.2 u 17 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u 18,000 260,000 Endrin aldehyde 3.7 u 4.2 u 4.9 u 3.9 u 4.0 u 4.2 u 3.8 u ~LOU 4.3 u NA NA Endrin ketone 3.7 u 4.2 u 4.9 u 3.9 u 4.0 u 4.2 u 3.8 u 4.0 u 4.3 u NA NA Gamma-Chlordane 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u NA NA Heptachlor 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 110 550 Heptachlor epoxide 1.9 u 2.2 u 5.6 p 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 53 270 Lindane 1.9 u 2.2 u 2.5 u 2.0 u 2.0 u 2.2 u 2.0 u 2.1 u 2.2 u 440 2,900 Methoxychlor 19 u 22 u 25 20 u 20 u 22 u 20 u 21 u 22 u 310,000 4,400,000 Toxaphene 190 u 220 u 250 u 200 u 200 u 220 u 200 u 210 u 220 u 440 2,200 Notes: PRGs =EPA Region 9 Preliminary Remediation Goals dated 2000 NA = PRG not assigned U =The analyte was not detected at or above the reported result. P =The analyte was detected above instrument detection limit but below the established minimum quantitation limit.

Bums TBA Report October I I. 100 J Table 4- Soil Analytical Data- Metals Former Bennett's Car Dealership Bums, Oregon TP1(3) TP2(3) TP3(3 .5) TP4(3.8) TP5(5) TP6(6) TP7(4.5) TP8(5.5) TP9(5.9) MJS144 MJSI49 MJSI50 MJSI48 MJSI52 MJSI51 MJSI47 MJS145 MJSI46 Region 9 PRGs Parameters 5/30/2001 5/30/2001 5/30/2001 5/30/2001 5/30/2001 5/30/2001 5/30/200 I 5/30/2001 5/30/2001 Residential Industrial mg/kg mglkg mg/kg mg/kg mg/kg mg/kg mifkg mg/kg mg/kg mg!kg mg/kg

Aluminum 7,610 28,400 14,000 15,400 19,100 20,200 24,800 20,200 18,400 76,000 100,000 Antimony 4.6 u 5.5 u 6.0 u 4.9 u 5.3 u 5.5 u 5.1 u 4.8 u 5.5 u 31 820 Arsenic 2.2 2.2 B 2.6 B 2.2 B 2.5 1.5 B 2.0 B 2.8 2.3 B 0.39 2.7 Barium 418 254 259 236 235 177 318 191 326 5,300 100,000 Beryllium 0.48 B 1.2 B 0.55 B l.IB 0.93 B 0.64 B 0.91 B 0.94 B 0.75 B 150 2,200 Cadmium 1.4 0.40 u 0.43 u 0.70 B 0.54 B 0.39 u 0.50 B 0.49 B 0.52 B 37 810 Calcium 5,210 4,270 6,640 4,370 4,850 4,830 6,600 5,550 5,130 NA NA Chromium 10.3 10.8 13.2 16.4 18.8 16.7 23 .3 21.7 18.5 210 450 Cobalt 8.7 B 7.5 B 7.1 B 11.1 B 11.0 B 11.1 B 13.7 11.1 B 17.5 4,700 100,000 Copper 38.8 17.4 33.9 14.5 22.2 16.6 21.8 23.2 22.7 2,900 76,000 Iron 10,200 14,600 13,200 16,800 20,300 19,800 25,300 22,100 21,900 23,000 100,000 Lead 682 13.2 438 7.4 8.9 6.2 8.0 9.6 7.7 400 750 Magnesium 2,760 3,250 2,110 3,670 3,790 3,260 4,690 4,820 4,790 NA NA Manganese 4~?:>- 431 334 472 470 405 564 472 807 1,800 32,000 __, Mercury 0.13 0.07 u -'~?·- 0.06 u 0.06 u 0.07 u 0.06 u 0.06 u 0.07 u ?~ 610 Nickel 9.6 15.9 13 .1 15.4 20.8 17 .2 25.6 19.7 26.3 1,600 41,000 Potassium 1,840 1,690 3,000 1,260 3,340 2,380 4,090 2,290 3, II 0 NA NA Selenium 0.47 u 0.55 u 1.3B 0.50 u 0.53 u 0.55 u 0.51 u 0.48 u 0.55 u 390 10,000 Silver 0.49 B 0.73 B 0.60 u 0.50 u 0.89 B 0.55 u 0.51 u 0.48 u 0.55 u 390 10,000 Sodium 218 B 354 B 329 B 798 B 663 B 502 B 556 B 624 B 536 B NA NA Thallium 0.38 u 0.45 u 0.49 u 0.40 u 0.43 u 0.45 u 0.41 u 0.39 u 0.45 u 5.2 130 Vanadium 24 32.3 32.7 40.9 51.2 46.6 54.4 53 60.7 550 14,000 Zinc 174 34.8 153 46 .9 59.0 44.4 65.0 70.0 61.4 23,000 10,000 Notes: PRGs =EPA Region 9 Preliminary Remediation Goals dated 2000 NA = PRG not assigned NC =Not Calculated U =The analyte was not detected at or above the reported result. B =The analyte was also found in the analytical method blank.

Burns TBA Report October 11. 2001 Table 5- Soil Analytical Ontn- Petroleum Hydrocarbons Former Bennett's Car Dea lership l3urns, Oregon

TPH- TPJ-1- TPJ-1- Sample Date HCID gasoline diesel heavy oil Identification Co llected (g,d,o) (ppm) (ppm) ~pm)

Soil samples collected to characterize impacted soi l for disposal Tank Pit #I 617/2001 0 NA <250 1,300 Tnnk Pit #2 617/200 1 0 NA <250 1,400 Heating Oil Tank 617/2001 g,d,o 7 10 4,000 30,000

Soil samples collected after impacted soil was excavated Tank Pit Il l 7/9/2001 ND NA NA NA Tank Pit 112 7/9/2001 ND NA NA NA

Notes HCID = Hydrocarbon identification TPH = Total Petroleum Hydrocarbon g = gasoline detected, d = diesel fuel detected, o = heavy oil detected ppm = parts per million ND = Not detected NA = Not analyzed for this parameter

Burns Tlli\ Report O ~ tohcr I I, 200 I APPENDIX A

TBA Photograph Log

Burns TllA Rcporl.doc October II , 200 I Photo Log, Former Bennett's Car Dealership, ECSI # 3038 Taken 5-30-01 by KR

Photo Log, Former Bennett's Car Dealership, ECSI # 3038 Taken 5-30-0 I KR

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Test Pit 5 Photo Log, Former Bem1ett's Car Dealership, ECSI # 3038 Taken 5-30-01 KR

Test Pit 6 Photo Log, Fonner Bennett's Car Dealership, ECSI # 3038 __.:.Taken 5-30-01 by KR

.I- 1 :,·;J: ,, I I

Test Pit 7 Photo Log, Former Bennett's Car Dealership, ECSI # 3038 Taken 5-30-01 KR

Test Pit 8 concrete breaking Photo Log, Former Bennett's Car Dealership, ECSI # 3038 Taken 5-30-0 I by KR

Test Pit 9 concrete breaking Photo Log, Former Be•mett's Car Dealership, ECSI # 3038 Taken 5-30-0 I KR

-.:- ...... ,_. . l '. #' ...... -......

~ . ~· .. ·:-.. ~· . . .~ ,; . ...- ' .· .•,,. J \.A • f ' I "!' Test Pit 9 Photo Log, Former Bennett's Car Dealership, ECSI # 3038 Taken 5-30-0 I by KR

East UST East UST Photo Log, Former Be1mett's Car Dealership, ECSI # 3038 Taken 5-30-0 I by KR

Hoist Area

East UST. West USTs are located in upper lot by retaining wall