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08 September 2000 <br />AGE -NC Project No. 97-0372 <br />Page 9 of 18 <br />3.0. SCOPE OF WORK <br />At the 14 March 2000 meeting, it was decided that the DTSC will act as the lead agency for this <br />investigation and the PHS-EHD will provide regulatory oversight of field activities to minimize <br />regulatory expenses. AGE reports will be submitted to both agencies. An authoritative sampling <br />strategy will be followed to assess areas of known or suspected activities for contaminants most <br />likely to impact the subsurface media. To meet the objectives of the DTSC, the following scope of <br />work was derived from the 14 March 2000 meeting. <br />Miscellaneous Storage and Tank Storage Area <br />Advancement of two soil borings to 25 feet bsg in the vicinity of the previously excavated <br />and backfilled soil in the driveway to obtain soil samples for confirmation analysis for lead, <br />nickel, cobalt, copper, chromium, and cyanides (the target metals); this is an area that has had <br />a known release of waste water that required excavation. The two borings are required to <br />collect soil samples directly beneath the former floor of the excavation and at greater depth <br />for analysis to confirm removal of potentially impacted soil. The first encountered native soil <br />sample from each boring will initially be analyzed for pH and target metals. <br />Advancement of one soil boring to 20 feet bsg in the vicinity of the sump hole in the former <br />tank storage area to collect soil samples for analysis as noted above. The sump hole was <br />located under a valve in the tank. The unlined sump hole provides a potential vertical <br />migration path for contaminants to enter the subsurface from any releases from the tank or <br />tanks formerly located in the area. A continuous core will be collected from the boring to aid <br />establishment of the site stratigraphy. Selected samples will be analyzed for pH, cyanides and <br />the target metals note above. Only one shallow sample will be initially analyzed. <br />Advancement of two additional soil borings randomly located to sample shallow soil for pH, <br />the target metals and cyanides. Total depth of borings will be 15 feet, with a continuous core <br />collected from one boring and samples collected at projected points of contact of contrasting <br />soil compositions in the second boring. <br />Municipal Well Area <br />Advancement of one soil boring to first water in the vicinity of the municipal well to obtain <br />a continuous core from surface to total depth and to collect soil and ground water samples. <br />The water sample will be analyzed for the target metals, volatile organic compounds (VOCs) <br />and pH; the continuous soil core will be utilized to identify permeable subsurface pathways <br />from the site to the well bore. Samples form each soil type encountered in on-site borings <br />will be analyzed as background samples as the soil on the adjacent site is not likely to have <br />been impacted by operations on the RV Circuits site. Analyses will be for the same analytes <br />Advanced GwEnvironmenhl, Inc <br />