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Park's Revised Proposal was prepared and implemented to address PHS/EHD's concerns with <br /> respect to residual Total Petroleum Hydrocarbon(TPH) and lead contamination, if any, in the on <br /> site soil and groundwater beneath the site. <br /> SCOPE OF WORK PERFORMED <br /> The scope of work outlined in that proposal and implemented by Park consisted of: <br /> Soil Boring <br /> • Drilling one 35-foot soil boring; <br /> • Collecting soil samples at 15, 20, 25, 30 and 35 feet bgs; <br /> • Analyzing samples for TPH as gasoline (Modified 8015), BTEX(8020), and Total Lead <br /> (7420), or equivalent; and <br /> • Back filling the soil boring with Portland Cement. <br /> Two Quarters of Groundwater Monitoring <br /> • Collecting two rounds of groundwater samples approximately one month apart; <br /> Purging three groundwater monitoring wells and monitoring for temperature, pH, and EC; <br /> • Containerizing purged groundwater; <br /> • Groundwater sampling with field filtering for lead samples; <br /> • Analyzing samples for TPH as gasoline (M8015), BTEX(602), and Total Lead(7420), or <br /> equivalent; and <br /> • Reporting findings. <br /> DISCUSSION OF FIELD WORK PERFORMED <br /> Soil Boring and Sampling <br /> Park mobilized to the site and drilled the soil boring(SB-1-P) on April 29, 1994,using a truck- <br /> mounted auger drill rig equipped with 8 inch diameter hollow stem augers. The augers were <br /> decontaminated prior to drilling the boring. <br /> One soil boring was drilled through the back-filled tank excavation to evaluate the potential for <br /> 50Z6J1 2 <br />