Laserfiche WebLink
determination of the current groundwater gradient, which will be summarized in the problem <br /> assessment report <br /> Immediately following well development, a groundwater sample will be retrieved from each <br /> well Stabilization of EC, pH, and temperature will be checked after purging and before and <br /> ' after sample collection to ensure samples collected are representative of formation water Water <br /> sample collection and preservation will be in accordance with RESNA's QA/QC Plan, <br /> ' groundwater sampling protocol (Appendix 111) Clean, disposable balers with bottom emptying <br /> devices will be used to reduce volatilization Samples will be transferred to appropriate sample <br /> containers, labelled with sample identification,placed on ice, and shipped under chain-of-custody <br /> to RESNA Environmental Laboratory (DHS #1211) The water samples will be analyzed by <br /> ' RESNA for BTEX and TPHG by EPA methods 8020 and modified 8015, respectively The <br /> method detection limit at RESNA for BTEX and TPHG in water is 0 0005 ppm and 0 10 ppm, <br /> ' respectively <br /> 3.4 Project Schedule <br /> The anticipated schedule for project completion is shown on Figure 4 <br /> 4.0 REFERENCES <br /> ' • Department of Water Resources, Bulletin No 146, San Joaquin Count Ground Water <br /> Invests ag tom, July 1967 <br /> ' • U S Geological Survey, Professional Paper 1401-C, Geology of the Fresh Ground-water <br /> Basin of the Central Valley, California, with Texture Mas and Sections, 1986 <br /> ' • U S Geological Survey, West Stockton Quadrangle, California, 1987 <br /> • U S Geological Survey, Professional Paper 1401-D, Groundwater Flow in the Central Vallev <br /> ' California, 1989 <br /> • San Joaquin County, Flood Control and Water Conservation District, Semi-Annual <br /> ' Groundwater Report, Spring 1991 <br /> WPOI2892 TIL 6 <br />