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,%NW ... <br /> 12 March 1992 <br /> (GeoAudit CV 43A4-1.49) <br /> Page 2 of 3 <br /> In August of 1991, the piping associated with the underground <br /> storage tanks was removed and samples were collected under the <br /> supervision of Eric Travena of the SJEHD. Five trenches were <br /> excavated and one sample from each trench was collected. Samples <br /> were analyzed for TPH--g and TPH-d (EPA method 8015) , BTE&X (EPA <br /> 8020) , Chlorinated Hydrocarbons (EPA 8010) , total lead (7420) and <br /> soluble lead (7421) . In addition, one sample was analyzed for <br /> Metals (Cd, Cr III and IV, Pb and Zn) and PCB's (EPA 8080) . Some <br /> samples showed elevated levels of lead contamination, but all were <br /> below acceptable levels. No other contamination was detected in any <br /> of the samples. <br /> PROPOSED ASSESSMENT and SAMPLING <br /> Geological Audit Services proposes to perform a soil drilling and <br /> sampling program to determine whether the operation of the <br /> underground storage facility has negatively impacted the soil. <br /> Details of the proposed assessment are given below: <br /> 1) Prepare a site health and safety plan in accordance with the <br /> Occupational Safety and Health Guidance Manual for Hazardous <br /> Waste Site Activities - Prepared by National Institute for <br /> Occupational Safety and Health, Occupational Safety and Health <br /> Administration, U. S. Coast Guard and U.S. Environmental <br /> Protection Agency, October 1985. <br /> 2) Notify the EHD 48 hours prior to commencement of any work. <br /> 3) Drill between six and nine vertical borings to a maximum depth <br /> of 20 feet utilizing a hollow-stem auger drill rig or hand <br /> auger. The estimated boring locations are depicted on Figure <br /> 2 - Site Plan. <br /> 4) Obtain discrete soil samples at the termination depth using a <br /> sampler loaded with three pre-cleaned brass tubes. <br /> 5) Preserve soil samples in the lead brass tube by covering both <br /> ends with aluminum sheets, capping and sealing with tape. <br /> 6) Label and log soil samples on a chain of custody form. <br /> 7) Store the samples under ice and transport the samples in a <br /> chilled container to a State certified laboratory for <br /> analysis. <br /> 8) Analyze selected soil samples (approximately six to nine) for <br /> total petroleum hydrocarbons (TPH-g) and BTE&X in accordance <br /> with EPA methods 8015 and 8020, respectively. <br />