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t J In 16 SUPERIOR ANALYTICAL LABORATORY, INC 1385 FArRFAx ST. STE D • SAN FRANCISCO, CA 94124 • PRONE (415) 647-2481 ��yy C E R T I F I C A T E O F A N A L Y S I S LABORATORY NO. : 51384 DATE RECEIVED: 11 /20/89 CLIENT Leedshill - Herkenhoff. Inc. DATE REPORTED- 11 /29/89 CLIENT JOB NO. . 9832 12 ANALYSIS FOR BENZENE. TOLUENE, ETHYL BENZENE & XYLENES by EPA SW-846 Methods 5030 and 8020 Concentration(ug/kg ) LAB Ethyl # Sample Identification Benzene Toluene Benzene Xylenes ---- -- ------------------- ___---- ------- ---- ------- 1 11 -17-89-TB5-2 ND<3 ND<3 ND<3 ND<3 2 11 -17-89-TB5-5 ND<30 50 ND<30 40 4 11-17-89-TB5-15 ND<300 1700 16000 50000 6 11-17-89-TB5-25 8 4 11 6 7 11-17-89-TB5-30 ND<3 ND<3 ND<3 ND<3 9 11-17-89-TB5-40 ND<3 ND<3 ND<3 ND<3 10 11 -16-89-TB5-2 ND<3 ND<3 ND<3 ND<3 11 11 -16-89-TB6-5 ND<3 ND<3 ND<3 ND<3 13 11-16-89-TB6-15 ND<3 ND<3 ND<3 ND<3 15 11-16-89-TB6-25 ND<3 ND<3 ND<3 ND<3 16 11-15-89-TB6-30 ND<3 ND<3 ND<3 ND<3 18 11 -16-89-TB6-40 ND<3 NDC3 ND<3 ND<3 19 11-16-89--TB7-2 20 10 ND<3 10 20 11-16-89-TB7-5 ND<3 ND<3 ND<3 ND<3 22 11 -16-89-TB7-15 ND<3 ND<3 ND<3 ND<3 24 11-16_89_TB7_25 ND<3 ND<3 ND<3 ND<3 25 11-16-89-TB7-30 ND<3 NDC3 ND<3 ND<3 27 11--16-89-TB7-40 60 ND<3 ND<3 10 28 11-16-89-TB8-2 ND<3 ND<3 ND<3 ND<3 29 11-16-89-TB8-5 ND<3 6 ND<3 5 31 11-16-89-TB8-15 ND<3 3 ND<3 ND<3 33 11-16-89-TB8-25 ND<3 ND<3 ND<3 ND<3 34 11-16-89-TB8-30 ND<3 ND<3 ND<3 ND<3 35 11-17-89-TB9-2 ND<3 ND<3 ND<3 ND<3 36 11-17-89-TB9-5 ND<3 ND<3 ND<3 ND<3 38 11-17-89-TB9-15 ND<3 ND<3 ND<3 ND<3 40 11-17-89-TB9-25 ND<3 ND<3 ND<3 ND<3 41 11-17-89-TB9-30 ND<3 ND<3 ND<3 4 ug/kg - parts per billion ( ppb) Minimum Detection Limit in Soil . 3.0ug/kg OAOC Summary- Daily Standard run at 20ug/L. RPD = < 15% MS/MSD Average Recovery = 985 : Duplicate RPD = 6% Ric d Srna, h. D Laboratory re or OUTSTAiVDING QUALiTY AND SERVICE