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1 Client Acc,.. 18.1 Date: 07-31-90 <br /> Client Name: Aegis Environmental Cons. Page: 4 <br /> 1 NET Log No: 2997 <br /> Ref: SHELL, 6131 Pacific Avenue, Stockton; Project: 90-020 <br /> QUALITY CONTROL DATA <br /> 1 Cal Verf Duplicate <br /> Reporting Stand % Blank Spike % Spike % <br /> Paramter Lzrm is Units Recovery Data Recovery Recovery RPD <br /> Gasoline 0.05 mg/L 104 ND 89 99 11.4 <br /> 1 Benzene 0.5 ug/L 100 ND 88 91 3.5 <br /> Toluene 0.5 ug/L 98 NO 90 95 5.5 <br /> COMMENT: Blank Results were ND on other analytes tested. <br /> 1 <br /> 1 CL ALITY CONTROL DATA <br /> Cal Verf Duplicate <br /> Reporting Stand % Blank Spike % Spike % <br /> 1 Parameter Limits Units Recovery Data Recovery Recovery RPD <br /> Gasoline 0.05 mg/L 99 ND 86 103 17 <br /> Benzene 0.5 ug/L 86 ND 90 103 14 <br /> Toluene 0.5 ug/L 95 ND 90 100 11 <br /> CCWENT: Blank Results were ND on other analytes tested. <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br />