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ATC Associates Inc. <br /> CV)/AYC <br /> 117 Lone Palm Avenue,Suite B <br /> Modesto,California 95351 <br /> 209-579-2221 <br /> a s s o c i n r e s i N c . fax:209-579-2225 <br /> SCOPE OF WORK <br /> Planning <br /> ATC will schedule field personnel and equipment, notify Underground Services Alert to locate <br /> underground utilities as required, and perform any other necessary field preparation and job start- <br /> up activities. ATC will also obtain a San Joaquin County permit for the advancement of the <br /> Geoprobe® soil borings. The permit application is attached to this workplan. <br /> Advancement of Geoprobe Soil Borings <br /> To evaluate the extent of impacted soil and groundwater at the site, up to three Geoprobe® soil <br /> borings will be advanced to approximate construction activity depths, estimated at approximately <br /> 10 feet below ground surface (bgs) near the proposed path of trenching, and to approximately 40 <br /> feet in the immediate vicnity of the proposed tower location. Proposed boring locations are <br /> shown on Figure 2. <br /> The three borings will be advanced 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 soil samples. Descriptions of soil types encountered and <br /> sample collection intervals will be recorded on boring logs. Soil samples will be collected at <br /> five-foot intervals, field screened with a Photo-Ionization Detection (PID) meter, and an <br /> estimated two soil samples from each of the borings will be submitted for laboratory analysis. <br /> Soil sample selection will be based on PID measurements and field observations (i.e. odor and <br /> soil discoloration). Groundwater is not anticipated to be encountered during this investigation, <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 /> Sample Analysis <br /> The soil and groundwater samples from the Geoprobe® soil borings will be immediately placed <br /> in a cooler with ice and delivered under chain-of-custody documentation to a State-certified <br /> analytical laboratory. Soil and groundwater samples will be analyzed for total petroleum <br /> hydrocarbons as gasoline (TPHg) by EPA method 8015; total petroleum hydrocarbons as diesel <br /> (TPHd) by EPA method 8015; benzene, toluene, ethylbenzene, and xylenes (BTEX), and methyl <br /> tert butyl ether(MTBE)by EPA method 8021. <br /> wAwordpro\33778\0004\wkp.doc 2 <br />