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North State Environmental ' <br /> ' Chemical Waste Disposal • Tracking • Consulting <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Qval__y Assurance <br /> Lab Number: 99-0087 <br /> _ Client ; Western Geo-Engineers <br /> Project : 8603--Sewer Discharge -Sample <br /> Daze Repo_zed: 01/29/99 <br /> Volatile Organic Hydrocarbons by Method 8260 GUMS <br /> Diesel :range Hydrocarbons by Method 3015M <br /> Gasoline, =X and MTBE by Methods 8015 7 and 8020 <br /> Total Cu, Cd, Cr:, Ni, Pb, Zn by AA Spectroscopy <br /> Reporting MS/MSD <br /> Analyte Method Limit Unit Blank Recovery RPC <br /> Gasoline 8015M 50 ug/L ND 102 2 <br /> Benzene 8020 0 . 5 ug/L ND 104 4 <br /> Ethylbenzene B020 0 . 5 ug/L ND 105 5 <br /> Toluene 8020 0 . 5 ua/L,. ND 103 5 <br /> Xylenes 8020 i . 0 ag/L ND 109 2 <br /> MTBE 8020 0 . 5 ug/L ND 76 12 <br /> Diesel 8015M 0 . 05 Mg/L ND 103 0 <br /> Copper 7210 . 05 mg/L ND 106 2 <br /> Cadmium 7130 . 0 . 05 mg/L ND 1.03 8 <br /> C:hrcm.ium 1190 0 . 05 Mg/L T:D 99 . 2 <br /> Lead 7420 0 . 05 Mg/L K7) 96 6 <br /> Nickel 7520 0 . 65 mg/L ISD 99 7 <br /> Zinc. 7950 0. 05 mg/L ND 95 2 <br /> ELAP Certificate NC:1733 <br /> 3 <br /> Reviewed and Approved <br /> :, <br /> Page 2 of 2 <br /> John A.INurpny, Llb atory Director <br /> P. 10. Box 5424 South San -Francisco. California 94083 650- 588 . 108 VAX SRS- 1930 <br /> t <br />