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EEC#53462-1 UniFlrst Stocktoi November 12 2003 <br /> Excavation Base The base of the excavation will be divided into 15 foot (225sq ft) grids One <br /> sample will be collected from each fifteen foot sample grid <br /> Excavation Walls Samples from the excavation walls will be staggered depths along the vertical <br /> profile Samples will be collected at five foot depth increments at each wall (example a 7 foot <br /> deep excavation would require a sample at a depth of 3, 5, and 7 foot depth) <br /> Stocl pile Soil Soil destined for offsite disposal will be sampled at intervals of one sample per <br /> ' 100 cubic yards, or more frequently if required by the disposal facility Soil which is being tested <br /> for possible re-use at the site will be sampled at intervals of one sample per 50 cubic yards or <br /> more frequently <br /> ' Laboratory Methods — All samples collected during excavation and confirmation testing <br /> will be analyzed for total petroleum hydrocarbon (TPH) by Environmental Protection <br /> ' Agency Method (EPA) 8015 for carbon chain and for Volatile Organic Compounds by <br /> EPA method 8260B <br /> ' The work scope proposed in this document is intended to provide a rapid response to this recent <br /> discovery in accordance with all regulations and requirements of the SJCDEH EEC appreciates <br /> in advanced your assistance and guideline with implementation of this workplan, and looks <br /> forward to working with your agency at the subject site Please call Mark Zeko at(714) 667- <br /> 2300 if you have any questions or comments <br /> Sincerely, p HYDR� <br /> EEC �O <br /> /4J <br /> zoo <br /> Mark Zeko, R G , C H G <br /> Vice President ��� N0 310 <br /> rGFCA`Ito� <br />