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Mr. Travis Bryant Project 22605-101.001 <br /> January 27, 1997 <br /> Page 2 <br /> SCOPE OF WORK <br /> EMCON has prepared the following scope of work to complete the requirements <br /> associated with the project objectives. All work will be performed following the Regional <br /> Water Quality Control Board's Tri-Regional Guidelines. EMCON's field procedures are <br /> presented in Appendix A. <br /> Task 1 - Prefield Activities <br /> Obtain drilling permits from the San Joaquin County Public Health Services (SJCPHS). <br /> EMCON will notify Underground Service Alert of its intent to drill at least 48 hours <br /> before drilling to identify the location of underground utilities. <br /> Task 2 - Field Activities <br /> The following subtasks will be implemented to assess the vertical extent of residual <br /> hydrocarbons beneath the former UST. In the event that residual hydrocarbons are present <br /> beneath the UST and lateral delineation is necessary, EMCON will drill two additional soil <br /> borings. <br /> Subtask 2.A - Soil Boring <br /> EMCON will contract a licensed well driller to drill one exploratory boring using 8-inch <br /> diameter hollow-stem auger drilling equipment. The boring will be drilled from beneath the <br /> former UST to approximately 25 feet below ground surface (bgs). The proposed boring <br /> location is shown on Figure 2. <br /> Soil samples will be collected at approximately 5-foot intervals and will be classified using the <br /> Unified Soil Classification System(USCS). Select soil samples will be submitted to a California <br /> state-certified analytical laboratory and will be analyzed for TPHG using U.S. Environmental <br /> Protection Agency (USEPA) Method 8015; for benzene, toluene, ethylbenzene and xylene <br /> isomers (BTEX) and methyl tert-butyl ether (MTBE) using USEPA Method 8020; and for <br /> total lead using USEPA Method 7420. <br /> The boring will be grouted to the surface with neat cement following the collection of soil <br /> samples. <br /> All generated drill cuttings and excess soil samples will be stored on-site, and placed on <br /> and covered with visqueen. A composite sample will be collected from the soil cuttings <br /> SACW�PJZ\2605\26051010.1AB-94VIb:2 <br />