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' . ■ ' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> Analytical 404 N Waget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> 819 Straker Avenue Suite 8 Sacramento,CA 95834 (916) 921 96W FAX(916)921 0100 <br /> "Roy F Weston Client' Project ltd SJCHSA Sampled Jul 25, 1995 2300 Clayton Rd , Suite 1580 Sample Matrix Water Received Jul 27, 1995 <br /> Concord, CA 94520-2148 Analysis Method EPA 5030/8015/8020 Reported Aug 10, 1995 <br /> Attention David Marks First Sample# 507-1388 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D I D. I D I D. 11.13 1 D. <br /> pg/L 507-1388 507-1389 507-1390 507-1391 507-1392 507-1393 <br />' MW-7 MW-6 MW-4 MW-5 MW-10 MW-3A <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D N D 79,000 N D <br /> 1 <br /> Benzene 050 N D N D N D N D 7,000 N D <br />' Toluene 050 N D N D N D N D 3,300 N D <br />' Ethyl Benzene 050 N D N D N D N D 3,800 N D <br />' *Total Xylenes 050 N D N D N D N D 11,000 N D <br />' Chromatogram Pattern -- - -- -- Gasoline -- <br /> Cs-C12 <br />' Quality Control Data <br />' Report Limit Multiplication Factor 1 0 10 10* 10 10 10 <br /> Date Analyzed 8/7/95 8/7/95 8/7/95 8/7/95 8/7/95 8/7/95 <br />' Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 99 78 101 101 112 102 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br />' SEQUOIA ANALYTICAL Please Note <br /> J!1P/#1162244 *Reporting limit raised due to matrix interference <br /> Linda C Schneider <br /> Project Manager <br /> 5071388 ROY <1> <br />