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BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES� SAN JOSE,CALIFORNIA 95112-1105 <br /> (408)573-7771 FAX <br /> T Tq� (408)573-0555 PHONE <br /> tf � <br /> June 30, 1999 JUL 0 2 1999 <br /> Karen Petryna BY <br /> Equiva Services LLC <br /> P Q Box 6249 <br /> Carson, CA 90749-6249 <br /> Second Quarter 1999 Groundwater Monitoring at <br /> Shell-branded Service Station <br /> 7910 Lower Sacramento Road <br /> Stockton, CA <br /> Monitoring performed on May 28, 1999 <br /> Groundwater Monitoring Report 99052$-X-1 <br /> This report covers the routine monitoring of groundwater wells at this Shell-branded facility In <br /> accordance with standard procedures that conform to Regional Water Quality Control Board <br /> requirements, routine field data collection includes depth to water, total well depth, thickness of <br /> any separate immiscible layer, water column volume, apprionate calculated purge volume (If <br /> applicable), elapsed evacuation time (if applicable), total volume of water removed (if <br /> applicable), and standard water parameter instrument readings Sample material is collected, <br /> contained, stored, and transported to the laboratory in conformance with EPA standards <br /> Purgewater(if applicable) is, likewise, collected and transported to the Martinez Refining <br /> Company <br /> Basic field information is presented alongside analytical values excerpted from the laboratory <br /> report in the cumulative table of WELL CONCENTRATIONS The full analytical report fol <br /> the most recent samples and the field data sheets are attached to this report <br /> At a minimum, Blaine Tech Services, Inc field personnel are certified on completion of a forty <br /> hour Hazardous Materials and Emergency Response training course per 29 CFR 1910 120 Field <br /> personnel are also enrolled in annual eight hour refresher courses <br />