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ATC SITE SAFETY PLAN <br /> FACILITY BACKGROUND <br /> In November 1990, one 10,000-gallon diesel gasoline underground storage tank (UST) and <br /> all associated piping and dispensing equipment was removed and disposed of. Laboratory <br /> analysis of a soil samples collected from beneath the former UST location indicated the <br /> presence of detectable concentrations total petroleum hydrocarbons. After the tank was <br /> removed, the area of the former tank was backfilled. <br /> WORK PLAN <br /> Task One: <br /> Two soil borings will be advanced in the I cation of the former tank pit. The soil <br /> borings will be advanced employing direct push technology to depths of <br /> approximately 30 feet bgs. A field geologist will be present to log all soil samples. <br /> Each soil sample will be field screened with a Photoionization Detection (PID) meter <br /> or similar instrument and at least three s mples from the boring, based on field <br /> observations (i.e. odor, discoloration, PIDreadings), will be placed in a cooler with <br /> ice and submitted for laboratory analysis. S amples will be analyzed for BTEX (EPA <br /> Method 8020), and TPHd (EPA Metho( 8015 Modified). If groundwater is <br /> encountered in the borings, grab groundwater samples will be collected and <br /> analyzed for BTEX and TPHd. <br /> PAGE 4 <br />