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Sequoia 404 N. , CA Lane <br /> Walnut Creek, CA 94598 <br /> I(D- Analytical (925)988-96 <br /> FAX(925) 988-967373 <br /> 00 <br /> Roy F. Weston,Inc. Client Project ID: Home Depot, Tracy Sampled: May 12, 1999 <br /> 2300 Clayton Rd., Ste 1580 Sample Descript: Water, GW-3 Received: May 13, 1999 <br /> Concord, CA 94520 Analysis Method: EPA 8260 Analyzed: May 20, 1999..:: <br /> Attention: Scott Lookingbill Lab Number: 905-0777 Reported: Jun 2, 1999,;: <br /> QC Batch Number: MS0519998260S2A <br /> Instrument ID: GC/MS-2 <br /> VOLATILE ORGANIC COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L <br /> p-Isopropyltoluene............................................................ 2.0 ..................................... N.D. <br /> Methylenechloride............................................................ 10 ..................................... N.D. <br /> Naphthalene...................................................................... 10 ..................................... N.D. <br /> n-Propylbenzene............................................................... 2.0 ..................................... N.D. <br /> Styrene.............................................................................. 2.0 ..................................... N.D. <br /> 1,1,1,2-Tetrachloroethane................................................. 2.0 ..................................... N.D. <br /> 1,1,2,2-Tetrachloroethane................................................. 5.0 ..................................... N.D. <br /> Tetrachloroethene............................................................. 2.0 ..................................... N.D. <br /> Toluene.............................................................................. 2.0 ........I............................ N.D. <br /> 1,2,3-Trichlorobenzene..................................................... 10 ..................................... N.D. <br /> 1,2,4-Trichlorobenzene..................................................... 10 ..................................... N.D. <br /> 1,1,1-Trichloroethane........................................................ 2.0 ..................................... N.D. <br /> 1,1,2-Trichloroethane........................................................ 2.0 ..................................... N.D. <br /> Trichloroethene................................................................. 2.0 ..................................... N.D. <br /> Trichlorofluoromethane.................................................... 2.0 ..................................... N.D. <br /> 1,2,3-Trichloropropane..................................................... 5.0 ..................................... N.D. <br /> 1,2,4-Trimethylbenzene.................................................... 2.0 ..................................... N.D. <br /> 1,3,5-Trimethylbenzene.................................................... 2.0 ..................................... N.D. <br /> Vinylchloride..................................................................... 2.0 ..................................... N.D. <br /> Total-Xylene....................................................................... 2.0 ..................................... N.D. <br /> Surrogates Control Limit% %Recovery <br /> Dibromofluoromethane..................................................... 50 150..................................... 92 <br /> Toluene-d8........................................................................ 50 150..................................... 98 <br /> 4-Bromofluorobenzene..................................................... 50 150..................................... 91 <br /> Analytes reported as N.D.were not present above the stated limit of detection. <br /> SEQUOIA ANALYTICAL, #11271 <br /> y: <br /> antn�e Fegley <br /> Project Manager Page 2 of 2 <br /> 9050775.RFW <12> <br />