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s• ' 7 . <br /> Superior Prec',sion Ana/ cal Inc. <br /> / <br /> 1811 825 Arnold Drive, Suite 114 Martinez, California 94553 05101229-1512/fax 610; 229-1526 <br /> if <br /> 1 <br /> h <br /> C E R T I F I C A T E O F AN A L Y S I S <br /> LABORATORY NO. : 86653 <br /> DATE RECEIVED: 09/08/92 <br /> CLIENT: Kleinfelder DATE REPORTED: 09/23/92 <br /> CLIENT JOB NO. : 24-220182-B00 DATE SAMPLED: 09/04/92 <br /> ANALYSIS FOR CHROMIUM, COPPER, LEAD & ZINC <br /> by EPA SW-846 Method 6010 <br /> LAB <br /> Concentration(mg/kg) <br /> p---Iy------------- ium Copper Lead Zinc <br /> - <br /> # Sample identification Chrom_-- <br /> ---- -------- ------- ------- <br /> 1 6359536 30 10 50 <br /> 5 63599 65 11000 1500 400 <br /> 8 70858 30 30 10 50 <br /> j 11 7086430 60 9 60 <br /> mg/kg - parts per million (ppm) <br /> Method Detection Limit for Copper in Soil : 10 ',1mg/kg <br /> Method Detection Limit for Chromium in Soil: 5 mg/kg <br /> Method Detection Limit for Lead in Soil : 5 mg/kg <br /> Method Detection Limit for Zinc in Soil : 20 mg/kg <br /> QAQC Summary: MS/MSD Average Recovery 83 $ <br /> Duplicate RPD 5 <br /> i <br /> I ch!a d Srna, Ph.D. <br /> �I <br /> �r � <br /> abolratory Manager <br /> I <br /> I J <br /> • <br />