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Sequoia 660 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)7924865 FAX(707)792-0342 <br /> v.w..C'$?1DUnocal SS <br /> x♦i •.~x 4 �v~ <br /> ettler-Ryan v C1u6lin Cilent Project � �#d187, Stockton Sampled Peb~5, 1999 <br /> 6747 Sierra Court, Suite J Sample MatreK Water Received Feb 5, 1999,' <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Feb 12, 1999 } <br /> Attention Deanna Harding First Sample# 902-0651 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID LD ID ID LD <br /> Ng/L 902-0651 902-0652 902-0653 902-0654 902-0655 902-0656 <br /> TB-LB U-1 U-2 U-4 U-5 U-6 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D N D N D N D <br /> Benzene 050 N D 0 52 N D 0 88 N D 072 <br /> Toluene 050 N D 22 N D N D 10 34 <br /> Ethyl Benzene 050 N D N D N D N D N D 062 <br /> Dotal Xylenes 050 N D 44 N D 1 1 1 3 38 <br /> Chromatogram Pattern -- .- -- -- -- -- <br /> Quality <br /> -Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 1 0 1 0 1 0 10 <br /> Date Analyzed 2/10/99 2/10/99 2/10/99 2/10/99 2/10/99 2/10/99 <br /> Instrument Identification HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery, % 101 95 112 107 94 95 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> 1.1101A ANALYTICAL, #1271 <br /> ullanne Fegley <br /> Project Manager <br /> 9020651 GET <1> <br />