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ov- 19-98 05 : 59P <br /> North State Environmental <br /> Chemical %aste Disposal Trucking Cortsulling <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Quality Assurance <br /> Lab Number: 98_7490 <br /> CIient: - Western Geo-Engineers <br /> pro3 ect . R 603 <br /> Date Reported: 11/19/98 <br /> Diesel Range Hydrocarbons by Methoa 60151 <br /> Gasoline, BTEX and MTEE by Me,:hods 8015M and 6020 <br /> Reporting Ms/MSD <br /> on a 1 y t e Method Limit Unit Blank Recovery RPD <br /> Gasoline 6015M 50 Lg/L ND 97 3 <br /> Benzene 8020 0 . 5 ug/L ND 104 4 <br /> Ethylbenz,ene 8020 0 5 g/L ND 104 3 <br /> Toluene 8020 0 5 i.g/L ND 105 16 <br /> xylenes 8020 1 . 0 ug/L ND 109 50 <br /> MTBE 8020 0 . 5 ug/L ND 96 1 <br /> Diesel 8015M 0 . 03 :ng/L ND 111 6 <br /> ELAa certificate 1.0 1753 <br /> Revzeued and Approved <br /> d4 1 <br /> L <br /> Paye 2 Of 2 <br /> John A Murphy,Laboratory Director <br /> 15 0 H ()x 5624 • S +luth '; .iii f runc trt U Cjltfornia 94081 550 . 588 - 2818 FAX 588 1450 <br />