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4., <br /> Project Number; 5F8.175.0204,72 <br /> Consultant Prefect Number: 16000.206.044 <br /> Contract Number: N46CWCO244.9•X <br /> " Facility Number; 86465 <br /> Wwk Order Number; D005307 <br /> AePorl Issue Date: May 15,1990 <br /> Table 6 <br /> REAGENT WATER SPIKE(WS)AND REAGENT WATER SPIKE DUPLICATE(WSD) <br /> RECOVERY AND RELATIVE PERCENT DIFFERENCE(RPD)REPORT <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline In Water <br /> EPA Method 8020/8015 <br /> Date of Analysis: 05/10/90 Units: ug/L <br /> Concentration WS,% WSD,96 <br /> Analyte Added WS Result Recovery WSD Result Recovery <br /> Benzene 25 26.8 107 26.1 104 <br /> Toluene 25 26.4 106 25.6 102 <br /> Ethylbenzene 25 25.7 103 24,9 100 <br /> X lens(total) 75 79.2 i06 77.2 103 <br /> Acceptability Limits' <br /> f E Analyte RPD,56 Maximum RPE7,% %Recovery <br /> Benzene 3 30 84-128 <br /> i <br /> Toluene 4 30 83-122 <br /> Ethylbenzene 3 30 82-120 <br /> X ,ene(total) 3 30 86-123 <br /> 1 =Acceptability Ilm its are derived from the 99%confidence interval of all samples during the <br /> previous quarter. <br /> im <br /> kai <br /> 15 <br /> i � <br /> 611 .. <br /> GTEL Concord,CA Page 7 o17 <br /> D005307.00C <br /> 1 'TE L <br /> ENVI PON MENTAL ., <br /> I AEOPArOP1E5, INC. <br />