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EXCELCHEM <br /> . ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> OA/OC REPORT <br /> Attention Matthew Taylor Date Analyzed 11-24-97 <br /> Wallace-Kuhl & Associates Matrix 1Water <br /> 3050 Industrial Blvd <br /> West Sacramento, CA 95691 <br /> Project 2938 0311444 Manposa <br /> Matrix Spike Matrix Spike Duplicate <br /> Compound % Recovery % Recovery <br /> 1,1 dichloroethene 148% 147% <br /> benzene 125% 127% <br /> trichloroethene 123% 123% r <br /> toluene 121% 122% <br /> chlorobenzene 93% 94% <br /> ppb=Parts per billion=ug/kg=microgram per kilogram <br /> Nb =Not detected Compound(s)may be present at concentrations below the reporting ltnuL <br /> ANALYTICAL PROCEDURES <br /> Oxygenated Compounds are measured using EPA Method 8260 which unlizes a purge and trap interfaced to a gas chromatograph(GC}equipped <br /> with a mass spectrometer <br /> 12-01-97 <br /> La oratory Representative Date Reported <br /> EXCELCHEM ENVIRONMFNTAL I ABS 15 CERTIFIED BY THF STATE OF CALIFORNIA <br /> UPPARTMENT OF HEALTH SFRVICFS ASA HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No 2119) <br /> 8 <br />