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Project Number SFB-175-0244 72 <br /> Consultant Project Number 16000-250-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number 96115 <br /> Work Order Number 0008624 <br /> Report Issue Date August 27, 1990 <br /> Table 5 <br /> MATRIX SPIKE (MS) AND MATRIX SPIKE DUPLICATE (MSD) RECOVERY <br /> AND RELATIVE PERCENT DIFFERENCE (RPD) REPORT <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline 1n Soil <br /> EPA Method 8020/8015 <br /> Date of Analysis 08/24/90 Client ID COMP 6 <br /> Sample Used C008641-06 Units mg/Kg <br /> Sample Concentration MS, % MSD, % <br /> Analyte Result Added MS Result Recovery MSD Recovery <br /> Result <br /> Benzene <0 005 286 2 67 93 274 96 <br /> Toluene <0 005 2_86 281 98 292 102 11 <br />• Ethylbenzene <0 005 286 2 84 99 2 97 104 <br /> Xylene total <0 015 858 8 60 100 900 105 <br /> Acceptability LimltS1 <br /> Analyte RPD, % Maximum RPD, % % Recovery <br /> Benzene 3 30 50 - 112 <br /> Toluene 4 30 50 - 108 <br /> Ethylbenzene 5 30 50 - 113 <br /> Xyiene (total) 5 30 50 - 114 <br /> I <br /> i <br /> <# = Not Detected at the indicated detection limit <br /> 1 = Acceptability limits are derived from the 99% confidence interval of all samples during the previous <br /> quarter <br />. GTE Concord CA Page 7 of 7 <br /> CO08624 DOC GTEL <br /> E ,V I R 0 N M E N'A L <br /> ® Aa0QA10R1E- IMC <br />