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w <br /> a <br /> Project Nuber: SFO-175-02U4.72 <br /> Consultant Project Number: 203.175-3289 <br /> Contract Number: N46CYCO244-9•x <br /> Facility Number: 9.0342 <br /> York Order Number: DDOZ239 <br /> Report Issue Date: February 22,',.. ?0 <br /> Table 4 <br /> MATRIX SPIKE (MS) RECOVERY REPORT <br /> Ethylene Dibrcmlde in Soil <br /> Modified EPA Method 504 <br /> Date of Analysis: 02/17/90 Client ID: Tank aro <br /> Sample Spiked: 04 Units: <br /> mg/Kg <br /> Analyte Re ul!t int MS, X Atceptabi l i y <br /> Added MS Result Recovery Limits, % <br /> Ethylene Dibrumide <0.2 0,2 0.19 95 <br /> 80-120 <br /> 1 Acceptability Limits are derived from the 99X confidence interval of oil s <br /> quarter, amples during the previous <br /> Not detected at the indleated detection Limit, <br /> i <br /> Table 5 <br /> 3 LABORATORY DUPLICATE SAMPLE RESULTS <br /> AND RELATIVE PERCENT DIFFERENCE (RPD) REPORT <br /> Ethylene Dibromide in Soil <br /> j <br /> Madlfied EPA Method 504 <br /> f <br /> Date of Analysis: 02/17/90 Client ID: Tank #4 - <br /> Sample Used: 94 <br /> Units: mg/Kg <br /> Analyte Sample Result Duplicate Result RPD X <br /> Maxim= RPD, X <br /> Ethylene Dibromide <p,2 c0.2 NA <br /> ( 30 <br /> NA ■ Not Applicable <br /> GTEL Concord, CA Page 6 of 6 <br /> D002239.DOC <br /> GTEL � . <br /> INVIRORMINtAI <br /> I ARORAf00113, INC <br />