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00(oNorth State Environmental <br /> ', Chemical Baste Disposal Trucking Consulting <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Quali7-,v Assurance <br /> Lab Number 99-0305 <br /> Client Western Geo--Engineers <br /> Project 1876 Country Club Blvd <br /> Date Reported 03/16/99 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting MS/MSD <br /> Walyte Method Lamit Unit Blank Recovery RPD <br /> Gasoline 8015M 50 ug/L ND 89 6 <br /> Benzene 8020 0 . 5 ug/L ND 85 11 <br /> Ethylbenzene 8020 0 5 ug/L ND 86 13 <br /> Toluene 8020 0 5 ug/L ND 87 10 <br /> Xylenes 8020 1 . 0 ug/L ND 86 13 <br /> MTBE 8020 0 5 ug/L ND 107 1 <br /> LAP Certificate No 1753 <br /> 4wewed d Appro ed <br /> L <br /> Page 3 of 3 <br /> John A Murphy, aboratory Director <br /> P 0 Box 5624 • South San Francisco California 94083 • 650- 588 - 2838 FAX 588 - ] 950 <br />