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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> I`S <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> 4 <br /> Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> ANALYSIS REPORT <br /> Attention: Mr. Gary Barker Date Sampled: 04-03-97 <br /> Horizon Environmental Date Received: 04-04-97 <br /> 5011 Golden Foothill Pkwy, Ste 7 BTEX Analyzed- 04-09-97 <br /> El Dorado Hills, CA 95762 TPHg Analyzed: 04-09-97 <br /> Project: 3001.11/Discovery Chevrolet Matrix: Soil <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg <br /> PPM PPM PPM PPM PPM <br /> Reporting Limit: 0.005 0.005 0.005 0.005 1.0 <br /> SAMPLE <br /> Laboratory Identification: <br /> l�S-5-MW5 ND ND ND ND ND <br /> SO497051 <br /> -6.5-MW4 0.008 0.008 0.032 0.276 3.8 <br /> SO497055 <br /> S-0403-F-8' 0.270 0.067 0.152 0.794 7.5 <br /> SO497060 <br /> S-0403 G-8' 0.350 0.122 0.163 0.818 8.2 <br /> SO497067 <br /> ,-�-0403 H-8 0.326 0.222 0.164 0.832 7.3 <br /> SO497068 <br /> ppm=Parts per million—mglKg—milligram per Kilogram <br /> ND—Not detected. Compound(s)may be present at concentrations below the reporting limit. <br /> ANALYTICAL PROCEDURES <br /> BTEX--Benzene,toluene,ethylbenzene,and total xylene isomers(BTEX)are measured by a draction using EPA Method 5030 followed by analysis <br /> using EPA Method 8020 which utilizes a gas chromatograph(GC)equipped with a pholoionizatiort detector(PID). <br /> TPIIg—Total petroleum hydrocarbons as gasoline(low-to-medium boiling points)are measured by extraction using EPA Method 5030,Followed by <br /> modified EPA Method 8015,which utilizes a GC equipped with an FID. <br /> 04-15-97 <br /> ab ratory Representative Date Reported <br /> i <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BYTHE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASE TESTING LABORATORY <br /> (Ccrtifie non No.1760) <br />