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sod <br /> EXCELCHE <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> ANALYSIS REPORT <br /> Attention: Mr. Noel Lerner Date Sampled : 08-26-97 <br /> Helmick&Lerner Inc. Date Received: 08-26-97 <br /> 1620 Executive Court MTBE Analyzed: 09-05-97 <br /> Sacramento, CA 95864 BTEX Analyzed: 09-05-97 <br /> TPHg Analyzed: 09-05-97 <br /> TPHd Analyzed: 09-07-97 <br /> Project: 00815/Stockton Unified Matrix: Soil <br /> Ethyl- Total <br /> MTBE Benzene Toluene benzene Xylenes TPHg TPHd <br /> PPM PPM PPM P,P_ PPM PPM PPM <br /> Reporting Limit: 0.579 0.231 0.231 0.231 0.231 23.1 25 <br /> SAMPLE <br /> Laboratory Identification: <br /> (839)S-1 ND ND ND 1.26 9.10 1160 380* <br /> 50897582 <br /> ppm=Parts per million=mg(Kg=milligrams per Kilogram <br /> ND=Not detected. Compound(s)may be present at concentrations below the reporting limit. <br /> '=Estimated value. Matrix interferences. <br /> ANALYTICAL PROCEDURES <br /> MTBE--Methyl tert-Butyl Ether is measured by extraction using EPA Method 5030 followed by analysis using EPA Method 8020 which utilizes a <br /> gas chromatograph(GC)equipped with a photoionization detector(PID). <br /> BTEX—Benzene,toluene,ethylbenzene,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 followed by analysis <br /> using EPA Method 8010 which utilizes a gas chromatograph(GC)equipped with a photoionization detector(PID). <br /> TPHg—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 a FID. <br /> TPHd—Total petroleum hydrocarbons as diesel(high boiling points)are measured by extraction using EPA Method 3550 followed by modified EPA <br /> 8015 with direct sample injection into a GC equipped with an FID. <br /> 09-08-97 <br /> La ratory Representative Date Reported <br /> EXCELCHEM ENVMONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No.2119) <br /> 1 <br />