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---------------- <br /> EXCELCHEM <br /> r _ <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: 01-03-97 <br /> - Helmick&Lerner,Inc. Date Received: 01-03-97 <br /> 1620 Executive Court MTBE Analyzed: 01-06-97 <br /> Sacramento,CA 95864 BTEX Analyzed: 01-06-97 <br /> TPHg Analyzed: 01-06-97 <br /> Project: 00811/Stockton Unified School District Matrix: Soil <br /> Ethyl- Total <br /> MTBE Benzene Toluene benzene Xylenes TPHg <br /> PPM PPM PPM PPM PPM PPM <br /> -' Reporting Limit: 0.005 0.005 0.005 0.005 0.005 1.0 <br /> SAMPLE _ <br /> Laboratory Identification: <br /> 0605-0608 ND ND ND ND ND ND <br /> 50197014-017 <br /> 0609-0611 ND ND ND ND ND ND <br /> 50197018-020 <br /> 0633 ND ND ND ND ND ND <br /> S0197042 <br /> 0634 ND ND ND ND ND ND <br /> S0197043 <br /> 0636 ND ND ND ND ND ND <br /> 50197045 <br /> 0637 ND ND ND ND ND ND <br /> r; 50197046 <br /> ppm=Parts per million=mg/Kg=milligram per Kilogram <br /> ND=Not detected. Compound(s)may be present at concentrations below the reporting limit. <br /> ANALYTICAL PROCEDURES <br /> MTBE--Methyl tert-Butyl Ether is measured by extraction using EPA Method 5030 followed by analysis using EPA Method 9020 which utilizes a <br /> gas chromatograph(GC)equipped with a photoionization detector(PID). <br /> - <br /> BTEX--Benzene,toluene,ethyibenzene,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 followed by analysis <br /> using EPA Method 8020 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 /> 01-07-97 <br /> ab atory resentative Date Reported <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No.176D,2119) <br />