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vTC • <br /> Advancement of Soil Borings <br /> To evaluate the potential impacts to the subsurface at the site, two soil borings will be advanced <br /> to approximately 35 feet below ground surface (bgs). The borings will be advanced by a State- <br /> licensed (C57) drilling company. The proposed boring locations are shown on Figure 2. A field <br /> geologist will be present to log drill cuttings and soil samples. Descriptions of soil types <br /> encountered and sample collection intervals will be recorded on boring logs. Soil samples will <br /> be collected at five-foot intervals. All soil samples will be field screened with a flame ionization <br /> detector (FID) for volatile organic compounds (VOCs). Once the samples have been collected <br /> the borings will be grouted to the surface with neat cement. <br /> Soil Sample Analysis <br /> Two soil samples collected from each boring will be placed on ice and sent using chain-of- <br /> custody record to Argon Laboratories, a State-certified laboratory, for analysis. Selected soil <br /> samples will be analyzed for total petroleum hydrocarbons as gasoline (TPHg) and total <br /> petroleum hydrocarbons as diesel (TPHd) by EPA method 8015 and benzene, toluene, ethyl <br /> benzene, xylenes (BTEX), and MTBE by EPA method 8020. If MTBE is detected in any sample <br /> by EPA method 8020, the sample will be analyzed for oxygenate fuel additives by EPA method <br /> 8260 to confirm the results. <br /> Report Preparation <br /> ATC will prepare a report that will include a description of all field activities, laboratory results, <br /> and boring logs. A draft report will be submitted to the client for review and any comments will <br /> be incorporated into the final report. <br /> Proiected Schedule <br /> ATC has tentatively scheduled the advancement of the two soil borings on May 4, 2001. ATC <br /> will notify PHS/EHD at least 48 hours prior to performing any field activities. <br /> wAwordpro\I 9407\0003\wkp.doc 2 <br />