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... ..Vr 14 April 1992 (GeoAudit CV 43A4-1.49) Page 2 of 3 hydrocarbons (TPH) and aromatic hydrocarbons (BTE&X) . Only one sample (at 5. 5 feet) showed any detectable concentration of hydrocarbon contamination (TPH at 4 ppm) . Another underground storage tank (a 550 gallon waste oil tank) was removed by Seibold Corporation in December of 1990. One soil sample from the fill end of the tank was collected by FGL Laboratory at the time of removal. This sample was tested for TPH-d (EPA method �e 8015) , BTE&X (EPA 8020) lorinated Hydrocarbons (EPA 8010) , Metals (Cd, Cr III and IV Pb and Zn) and PCB' s (EPA 8080) . Chromium and Zinc were enc ntered in the sample, Chromium III at 9922 ppm_ and Zinc at 26 ppm. These values are well below the Total Throld Limit Concentration (TTLC) . The concentrations of the remaining metals were below the detectable limits. The excavation was then backfilled and covered with asphalt to match existing surface. In August of 1991, the piping associated with the underground storage tanks were removed and samples were collected under the supervision of Eric Travena of the SJEHD. Five trenches were excavated and one sample from each trench was collected. Samples were analyzed for TPH-g and TPH-d (EPA method 8015) , BTE&X (EPA 8020) , Chlorinated Hydrocarbons (EPA 8010) , total lead (7420) and soluble lead (7421) . In addition, one sample was analyzed for Metals (Cd, Cr III and IV, Pb and Zn) and PCB' s (EPA 8080) . Some samples showed elevated levels of lead contamination, but all were below acceptable levels. No other contamination was detected in any of the samples. SOIL BORING SITE ASSESSMENT On 25 March 1992 seven additional soil borings were drilled on the subject site. Four soil borings were drilled to a depth of 20 feet in the vicinity of the former underground storage tanks. 'Three hand auger borings were drilled to a depth of 3 to 4 feet, one under each of the former dispenser islands (see figure 2 , Site Plan) . The four 20-foot soil borings were drilled using a standard 8" hollow stem auger. Discrete soil samples were collected at five- foot intervals. Auger returns were screened using a hand held Photo-Ionization Detector (PID) . No volatiles were detected using the PID. One sample was collected at the bottom of each hand auger boring using a slide hammer loaded with two clean brass tubes.