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680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (975)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)92I-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> -yti c, <br /> Anal al 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> ............ ............... <br /> Sequoia <br /> ........o... .............. <br /> equia Ana ytical Ib. L9o4328- EquilonEnterprises LLC <br /> 1551 Industrial Blvd. Matrix: Liquid <br /> San Carlos, CA. 94070 <br /> Attention: Mike Gregory OC Sample Group: 9042477-480 Reported: Apr 12,2, 1999.. <br /> M:-- <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Diesel <br /> Benzene <br /> QC Batch#: GCO50599 GCG50599 GC050599 GCO50599 SP042999 <br /> 802002A 802002A 802002A 802002A 8015EXA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M. <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 3510 <br /> Analyst: C.Westwater C.Westwater C.Westwater C.Westwater K.Grubb <br /> MS/MSD#: 9042440 9042440 9042440 9042440 BLK042999 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 5/5/99 5/5/99 5/5/99 5/5/99 4/29/99 <br /> Analyzed Date: 5/5/99 5/5/99 5/5/99 5/5/99 4/30/99 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP-3B <br /> Cone. Spiked: 20 yg/L 20 yg/L 20 pg/L 60 pg/L 500lig/L <br /> Result: 19 18 19 60 430 <br /> MS % Recovery: 95 90 95 100 86 <br /> Dup. Result: 18 17 18 58 470 <br /> MSD % Recov.: 90 85 90 97 94 <br /> RPD: 5.4 5.7 5.4 3.4 8.9 <br /> RPD Limit: 0-20 0-20 0-20 0-20 0-50 <br /> ............... <br /> U.I. <br /> .. .. ....... ........... . <br /> .... ........ <br /> . ....... .. <br /> . ......... . ..... ..... ... <br /> ............... <br /> X, ..... ..- :. . . ........ <br /> .. .......... ......... <br /> LCS #: 2LCS050599 2LCS050599 2LCS050599 2LCS050599 LCS042999 <br /> Prepared Date: 5/5/99 5/5/99 5/5/99 5/5/99 4/29/99 <br /> Analyzed Date: 5/5/99 5/5/99 5/5/99 5/5/99 5/1/99 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP-3B <br /> Cone. Spiked: 20,ug/L 20lig/L 20 pg/L 60 lig/L 500 pg/L <br /> LCS Result: 19 18 19 61 440 <br /> LCS % Recov.: 95 90 95 102 88 <br /> MS/PJISD <br /> LCS 70-130 70-130 70-130 70-130 60-140 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL, #1271 preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. R <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS rec2ve s to b use to validate the batch. <br /> MS=Matrix <br /> Ug D � Relative%Difference <br /> aar!�Westwater Du lic te,RPD= <br /> Project Manager <br /> 9042477.SSS <8> <br />