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.-RE <br /> CEIVED DEC 2 8 1992 } <br /> ( IryC. -�- <br /> o <br /> Superior Precision Analyt Cal. r.� <br />� a <br /> 825Ar old Drive, Suite 1 14 ■ Martinez, California 94553 IS 10) 229-1512 <br /> /fax IS 10) 229-15Zb <br /> I t� <br /> C E R T I F I C; A T E O F A N A L Y S T S <br /> LABORATORY NO. : 87418 I' <br /> DATE RECEIVED: 12/14/92 <br /> L <br /> CLIENT: Decon Environmental Services DATE REPORTED: 12/21/92 <br /> CLIENT JOB NO.': STOCKTON STEEL DATE SAMPLED : 12/11/92 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by MODIFIED EPA SW-846 METHOD 5030 and 8015 <br /> LAB Concentration (mg/kg) <br /> # E Sample Identification GasolineRange <br /> ---�- -------- <br /> �. � SP-1, -2 <br /> ND<1 <br /> 2 SP-3, -4 ND<1 , <br /> 3 SP-S, -6 ND<1 <br /> 4 SP-7, -8 ND<1 <br /> 5 ' SP-9 ND<1 <br /> i <br /> mg/kg - parts per million (ppm) <br /> I <br /> Method Detection Limit for Gasoline in Soil : 1 mg/kg <br /> i <br /> QAQCI;Summary: <br /> Daily Standard run at 2mg/L: RFD Gasoline = <15 <br /> MS/MSD Average Recovery = 91 °s Duplicate RPD = 3 <br /> i <br /> Richard Srna, Ph.D. <br /> Labor ory Direct r <br /> Certified Laboratories <br /> 3 <br />