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-------------- <br /> BLAINS 1680 ROGERS AVENUE <br /> TECH SERVICES SAN JOSE,CALIFORNIA 95112.1105 <br /> (408)573-7771 FAX <br /> W .mom (408)573-0555 PHONE <br /> .c <br /> y z <br /> �q o <br /> r� T <br /> April 9, 1999 <br /> Scott Hooton <br /> BP Oil Company <br /> 295 SW 41st Street, Bldg. 13, Suite N <br /> Renton, WA 98055-4931 <br /> 4th Quarter 1998 M01>lit0ring at 11 195 <br /> FOUrth Quarter 1998 Groundwater Monitoring <br /> BP Service Station Number 1 1 195 <br /> 16500 1-5 <br /> Lathrop, CA <br /> Monitoring Performed on December 23 & 3l, 1998 <br /> CL:I <br /> Groundwater Sampling Report 981223-Y-1 <br /> This report covers the routine monitoring of groundwater wells at this BP facility. Blaine Tech <br /> Services, Inc.'s work at the site includes inspection, gauging, evacuation, purgewater <br /> containment, sample collection and sample handling in accordance with standard procedures that <br /> conform to Regional Water Quality Control Board requirements. This report contains data from <br /> two seperate events. A tracking oversight led us to believe that the samples from the initial event <br /> on 12/23/98 were not transported to the laboratory for analysis. For that reason , we returned and <br /> resampled the sight on 12/31/98. As it turns out. The laboratory received samples .from both our <br /> initial and second sampling events. Analytical results and field data sheets from both events are <br /> included in this report- <br /> Routine Geld data collection includes depth to water, total well depth, thickness of any separate <br /> immiscible layer, water column volume, the appropriate calculated purge volume, elapsed <br /> evacuation time, total volume of water removed, and standard water parameter instrument <br /> readings. Sample material is collected, contained, stored, and transported to the laboratory in <br /> conformance with EPA standards. Purgewater is, likewise, collected and transported to Seaport <br /> Petroleum Corporation for disposal. <br /> Blaine Tech Services, lnc. Report No. 981223-Y-1 4th-Q 1998 Monitoring at BP 11195 <br />