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E CELCHE <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 ' <br /> o' <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> QA/0C REPORT <br /> Attention. Mr. Jahn Juhrend TPI-Id Analyzed 05-15-95 <br /> GEOCON Matrix Water <br /> 3235 Sunrise Blvd , #6 <br /> ' Rancho Cordova, CA 95742 <br /> Project. S8100-06-11A <br /> ' TPHd <br /> PPB <br /> Reporting Limit. 50 <br /> ' QA/QC PARAMETER <br /> Matrix Blank ND <br /> ' PERCENT RECOVERIES <br /> ' Laboratory Control Spike 104% <br /> Laboratory Control Spike 95%p <br /> ' Duplicate <br /> PPS = Parts per billion - ug/L - micrograms per Liter <br /> ND Not detected Compound(s)may be present at concentrations below the reporting limtt <br /> Spdies 6t Spdz Duphcates weic each spdmd with 5000 ug of dwsel standard. <br />' ANALYTICAL PROCEDURES <br /> TYHd--Total petroleum hydrocarbons as diesel(high boiling points)are measured by extraction using EPA Method method 3510,followed <br />' by modified EPA Method 8015,with direct sample injection into a GC equipped with an FID <br /> 4 <br /> 4 <br /> 05-17-95 <br /> Lab ratory Representative 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 1760) <br />