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7-24-1996 3 00PP 1 FROM P 10 <br /> EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Surte 9 <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax#. (916) 773-4784 <br /> QA/OC REPORT <br /> .Attention Vic Cherven Date Analyzed 07-12-96 <br /> Upgradient Environmental Matrix Water <br /> 1017 26th Street <br /> Sacramento, CA 95916 <br /> Project Valley Motors <br /> ZVMatnx Spike Matrix Spike Duplicate <br /> Goin ound %Recovery %Recpyery <br /> 1,1-dic1iloroethenc 94% 92% <br /> • Carbon Tetrachloride 85% 84% <br /> Dibromochloromethane 76% 800/0 <br /> II-Dichlorobenzene 81% 82% <br /> ANALYTICAL PROCEDURE$ <br /> HV-Halogenated Volishim are meas rad using EPA Method 624 which 0hhaox a purge and trap mterfuced to a gra chr—Wgaph(GC)equipped <br /> with it mass spectrometer <br /> 07-23-96 <br /> box tory Representative Date Reported <br /> EXCELCHEM ENVIWNMENTAL LABS IS CERTIFIED BY THESPATE OF CALIFORNIA <br /> DEPARPMENT OF HEALTH SERVICES AS A HAZARDOUS WATIT TRMNG LAPA)RATORY <br /> (Cart4fC&t,nn Nom.]7G0) <br /> 4 <br />