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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 e <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> QA/QC REPORT <br /> ' Attention Mr Enc Case Date Analyzed 11-22-96 <br /> Sierra Pacific Groundwater Consultants, Inc Matrix Sol] <br /> 4911 Windplay Dr, Suite 4 <br /> El Dorado Hills, CA 95762 <br /> ' Project 96-620/CTL <br /> Matrix Spike Matrix Spike Duplicate <br /> Compound % Recovery %Recovery <br /> 1,1-dich]oroethene 93% 93% <br /> benzene 102% 102% <br /> trichloroethene 102% 103% <br />' toluene 990/0 100% <br /> chlorobenzene 98% 101% <br />' ppb=Parts per billion=ug lcg=micrograms per kilograms <br /> ND=Not detected Compound(s)maybe present at conLentratrons b.low thL.reporting lurut <br /> A,NALI TICAL PROCEDURES <br /> MTBE—Methyl tett-Butyl Ether is measured using EPA Method 8260 which utilizes a purge .mid trap Interfaced to a gas chr-matograph (GC) <br /> cquipped with a mass spectrometer <br /> 11-27-96 <br /> L oratory Representative Date Reported <br /> 1 <br /> E\CELCHEM ENN IRONI MEN rAL L.AUq LS CEr,rIFIPD BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERI,ICES A-S A HALAR00t1S tr,'T,TFSTI NG LyBORAI C R t <br /> Ken,fication No 1760) <br />