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DIVERSIFIED ANALYTICAL SERVICES <br /> Environmental Laboratory <br /> L A B O R A T O R Y R E P O R T <br /> Reference: California Geophysical Group - Darpetro Charter Way <br /> Stockton Water Samples Collected 4/2/92 <br /> Test Methods: EPA Method 602 for Volatile Aromatics (BTXE) <br /> Modified EPA Method 8015 for Gasoline <br /> Standard Method 908C for Fecal Coliform <br /> rDate Received: April 3, 1992 <br /> Date Analyzed: April 4 - 9, 1992 <br /> Date Reported: April 14, 1992 <br /> Note: See attached document for further information. <br />' A N A L Y T I C A L R E S U L T S <br /> All Results in ppb (ug/L) Unless Otherwise Specified <br /> Constituent W-4 W-5 W-6 7C-5 <br />' Benzene 2754 14022 17 . 4 <br /> Toluene 11061 22078 1. 6 <br /> Ethylbenzene 2266 1872 6. 5 <br /> para+meta-Xylene 8432 7045 2 . 9 <br /> ortho--Xylene 4971 3246 16. 1 <br /> Fecal Coliform, MPN/100mL 40 <br /> Sample Depth Component Result Detection <br /> Number Ifeet) Name (mgJ kg) Limit <br />' W-4 None Given Gasoline 99. 6 1. 0 <br /> W-5 None Given Gasoline 172 1. 0 <br /> W-6 None Given Gasoline 1. 8 1. 0 <br />' ND = Not Detected <br /> < = less than; the number following this sign is the detection limit <br /> for that specific constituent. <br /> Diversified Analytical Services currently maintains Certificate <br /> Number 1201 under the California State Department of Health Services <br /> Environmental Laboratory Accreditation Program. <br />' Respectfully Submitted, <br /> Shawn A. Coleman, <br /> Laboratory Director/ <br /> Analytical Chemist <br />' 3732 W Century Blvd-, Unit 3, Inglewood, CA 90303 • (310) 671-5346 •Fax (310) 671-7216 <br />