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----- <br /> EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> `= 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> I--<i <br /> ANALYSIS REPORT <br /> Attention: Mr. Noei Lerner Date Sampled: 12-23-96 <br /> Helmick&Lerner, Inc. Date Received: 12-23-96 <br /> 1620 Executive Court BTEX Analyzed. 12-23-96 <br /> Sacramento, CA 95864 TPHd Analyzed: 12-23-96 <br /> Project: Stockton Unified School District Matrix: Soil <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHd <br /> PPM PPM PPM PPM PPM <br /> Reporting Limit: 0.05 0.05 0.05 0.05_ 1.0 <br /> SAMPLE <br /> Laboratory Identification: <br /> 598 * ND ND 0.28 2.27 250 <br /> S1296343 <br /> ' 600-603 ND ND ND 0.07 271 <br /> 51296345 <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 /> *=Surrogate recovery beyond QA/QC parameters due to matrix interferences, Diesel analysis was ran on 12-2496. <br /> ANALYTICAL PROCEDURES <br /> BTEx—Benzene,toluene,elhylbenzene,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 pholoionization detector(PID). <br /> TPHd—Total petroleum hydrocarbons as diesel(high boiling points)are measured by extraction using EPA Method 3550,followed by modified EPA <br /> Method 8015,with direct sample injection into a GC equipped with an FID. <br /> r 12-23-96 <br /> bo story Representative Date Reported <br /> i <br /> i <br /> ' EXCELCHEM ENVIRONMENTAL LABS 15 CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> 11 (Cerkiric.han No.1760,2I19) <br /> i <br />