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GENESIS ENGINEERING& REDEVELOPMENT samples. One to four samples were collected from each of the soil borings from various depths; ranging from surficial soils (0.0-0.2 feet below ground surface— ["bgs"]) to a total depth of 10.5-12.0 feet bgs. Samples were analyzed by the California Assessment ':';anual ("CAM") Waste Extraction Test ("WET"). The CAM V�':1T analysis is typically performed using a citric acid digestion/extraction, and the results are reported in milligrams per liter(mg/L). Sample results are presented in Table A-6. Sample locations are shown on Figure A-6. On April 29, 1985 Franks installed 10 monitoring wells (M-1 through M-10) across the northern and southern portions of the Site. All wells were drilled with a 6-inch continuous flight auger. All wells were installed to a depth of between 17-feet 4-inches and 20-feet. The monitoring wells were sampled 3 times between August of 1985 and September of 1986; Monitoring Wells M-4, M-5, M-6, and M-8 were also sampled in October of 1987. The analytical results of the groundwater sample results are presented in Table A-7. Sample locations are shown on Figure A-7. Condor On October 14— 16, 1987 Condor advanced 7 soil borings across the southern parcel of the site. A total of 33 discrete samples were collected from the?borings. Between 3 and 8 discrete samples were collected from each of the borings with depths ranging from surficial soils (0.0—4.0 feet bgs)to a total depth of up to 14 feet bgs. All 33 samples were analyzed for metals, with the deepest sample from 5 of the borings being additionally analyzed for volatile petroleum and oil & grease. Total constituent concentrations were run for each sample following digestion by EPA Method 3050. Samples with the highest total concentration were run for soluble constituents using the CAM guidelines with both citric acid extraction and deionized water extraction. Concentrations of metals in site soils are similar to those detected in later investigations. Soil sample results are presented in Table A-9 (sample locations are depicted on Figure A-9); sample results for soluble constituents are presented in Table A-6 (sample locations are depicted on FigureA-6). Off-Site Groundwater Condor collected samples from 4 off-site groundwater wells in October of 1987. No documentation was found as to the nature of these wells (agricultural, domestic, etc.). GW-101 was located approximately 1,000 feet northeast of the Site, GW-102 was located approximately 4,000 feet east of the Site, GW-103 was located approximately 1,500 feet south-southwest of the Site, and GW-106 was located approximately 1.25 miles northeast Site Investigation Work Plan 5 of 18 DePaoli Property November 14,2007