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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, Oregon 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