Laserfiche WebLink
Ms Margaret Lagorio Project 20805-140 010 <br /> August 10, 1998 <br /> Page 4 <br /> Task 4 Laboratory Analysis <br /> Soil samples and HydroPunch® groundwater samples collected during assessment <br /> activities will be analyzed by a state-certified and ARCO-approved laboratory for total <br /> petroleum hydrocarbons as gasoline (TPHG) using U S Environmental Protection Agency <br /> (USEPA) Method 8015M, and benzene, toluene, ethylbenzene, and total xylenes (BTEX) <br /> and methyl tert-butyl ether (MTBE)using USEPA Method 5020 <br /> Soil stockpiles generated during drilling will be sampled at four locations per 50 cubic <br /> yards Samples will be composited by Quadrant at the laboratory and analyzed for TPHG <br /> using USEPA Method 8015M, BTEX and MTBE using USEPA Method 8020, total lead <br /> using USEPA Method 7421, and RCI <br /> Task 5 Data Evaluation and Reporting <br /> Pinnacle will evaluate the analytical results and assess the necessity for further delineation <br /> of the vertical extent of impacts and for installation of water table monitoring wells The <br /> results of the assessment and recommendations for additional work will be presented in a <br /> report that will include copies of boring logs, well details, and copies of certified <br /> analytical reports <br /> Sincerely, <br /> Pinnacle <br /> Mark Capps, G WeclAical <br /> an <br /> Project Geologist Coordinator <br /> Attachments Figure 1 Site Location Map <br /> Figure 2 Site Plan <br /> Appendix A Exploratory Boring and Well Installation Procedures <br /> Appendix B Well Development and Sampling Procedures <br /> cc Paul Supple, ARCO Products Company <br /> Mark List, California Regional Water Quality Control Board, Central Valley <br /> Region <br /> sAC1A\5480N DOC-961mtt 1 <br />