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• SCOPE OF WORK <br /> Planning and Permits <br /> Smith Technology has completed the soil boring permit application for the proposed subsurface <br /> investigation. The permit application and associated fees (check no. 1161) are attached to this <br /> workplan. Smith Technology will also' schedule field personnel and equipment, notify <br /> Underground Service Alert to locate underground utilities as required, and perform any other <br /> necessary field preparation and job start-up activities. <br /> Advancement of Sail Borin s <br /> To determine the extent of potential soil contamination at the site, three soil borings will be <br /> advanced to approximately 30 feet below ground surface (bgs). Two of the borings will be placed <br /> inside the excavation area of the former USTs at the approximate locations where the 1987 soil <br /> samples were collected. The third boring will be placed in the estimated downgradient direction <br /> of groundwater flow from the former USTs. Proposed boring locations are shown on Figure 2. <br /> The three borings will be advanced to using truck mounted Geoprobe® narrow diameter, direct <br /> push technology. Drilling will be conducted by a State-licensed (C57) drilling company. A field <br /> geologist will be present to log all drill cuttings and soil samples. Descriptions of soil types <br /> encountered and sample collection intervals will be recorded on boring logs. Soil samples will be <br /> collected at five foot intervals, field screened with a Photoionization Detection (PID) meter, and <br /> up to two samples from each of the three borings will be submitted for laboratory analysis. Soil <br /> sample selection will be based on PID measurements and field observations (i.e. odor and soil <br /> discoloration). <br /> Following soil sample collection, the borings will be backfilled with neat cement grout to the <br /> ground surface. All drill cuttings, if any, will be stored on-site in a 5-gallon container pending <br /> laboratory results. <br /> Soil Sample Analysis <br /> Selected soil samples will be immediately placed on ice and delivered udder chain-of-custody <br /> documentation to a State-certified laboratory for analysis. Samples will be analyzed for total <br /> petroleum hydrocarbons as diesel and gasoline (TPHd and TPHg) using EPA Method 8015 <br /> Modified, benzene, toluene, ethylbenzene, and xylenes (BTEX) using EPA Method 8020, and <br /> methyl tertiary butyl ether (MTBE) using EPA Method 8020 and total lead. <br /> w:1977361reportslwkp.doc 7!11197 2 <br />