Laserfiche WebLink
1 Ground Water Aquifer Pumping Test Report-Second Quarter 2001 <br /> RAINWATER CAR WASH <br /> 420 West Yosemite Avenue, Manteca, California <br /> ' 1.0. INTRODUCTION <br /> Advanced GeoEnvironmental,Inc (AGE)has prepared this ground water aquifer pumping test report <br /> for the second quarter of 2001 for 420 West Yosemite Avenue, Manteca, California The site setting <br /> is illustrated on Figure 1 Site structures and monitoring well locations are depicted on Figure 2 <br /> ' The objective of the work was to obtain general ground water aquifer characteristics and to evaluate <br /> aquifer response to ground water extraction at a constant pumping rate This report is prepared in <br /> accordance with guidelines established by the California Regional Water Quality Control Board - <br /> Central Valley Division for investigation of underground storage tank (UST) sites Background <br /> information is summarized in Remedial Investigation/Feasibility Study Work Plan, dated 12 March <br /> I� <br /> ' 2001, prepared by AGE <br /> 2.0. INSTALLATION OF GROUND WATER EXTRACTION WELLS <br /> On 30 March 2001, ground water extraction well EW-1 and ground water observation well MW-6 <br /> iwere installed at the site for performance of a ground water pumping test, ground water extraction <br /> well installation procedures tar the site were outlined in Remedial Investigation/Feasibility Study <br /> Work Plan Addendum, dated 12 March 2001, prepared by AGE and approved by the San Joaquin <br /> ' County Public Health Services - Environmental Health Division (PHS-EHD) by letter dated 19 <br /> March 2001 <br /> ' <br /> 21 INSTALLATIONPROCEDURES <br /> One soil boring/ground water extraction well(EW-1) and one soil boring/ground water observation <br /> well(MW-6)were advanced at the site for performance of a ground water aquifer pumping test Soil <br /> bonngs EW-1 and MW-6 were advanced vertically to depths of 45 feet below surface grade (bsg) <br /> utilizing a B-85 high-torquc, truck-mounted drill ng equipped with 12-inch and 8-inch diameter <br /> hollow-stem augers Soil cuttings and nnseate were containerized in DOT-approved 55-gallon drums <br /> and placed in the southeast portion of the site in an area lacking public access The soil boring <br /> locations are depicted in Figure 2 <br /> 21 1 Logging <br /> ' ®untag drilling activities, soil samples were not collected for laboratory analysts or observation <br /> Advanced(,coFnvironmenEel [nL <br />