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Client No: 4 08 Date: 10-09-91 + <br /> NET Pacific Inc `Tient Name: Brown 8 Caldwell Page: 8 <br /> NET Log No 10058 <br /> Ref ARCO, Facility 2133, Stockton <br /> QUALITY CONTROL DATA <br /> Cal Verf Duplicate <br /> Reporting Stand % Blank Spike % Spike % <br /> Parameter Limits Units Recovery Data Recovery Recovery RPD <br /> Gasoline 1 mg/Kg 105 ND 87 80 8.5 <br /> Benzene 2.5 ug/Kg 112 ND 98 92 5 9 <br /> Toluene 2.5 ug/Kg 111 ND 96 90 3 6 <br /> Gasoline 1 mg/Kg 92 ND 113 96 16 <br /> Benzene 2 5 ug/Kg 8T ND 102 103 1 6 <br /> Toluene 2.5 ug/Kg 89 ND 102 103 1 0 <br /> COMMENT Blank Results were ND on other analytes tested. <br /> Leat! (EPA 7421) 0 2 mg/Kg 97 ND 99 99 c1 <br /> Lead (EPA 7421) 0.2 mg/Kg 106 ND 91 99 4 9 <br /> Cyanide (total) 0.20 mg/Kg 97 ND 112 111 1 3 <br /> Flashpoint -- deg F 100 N/A N/A N/A N/A <br /> Sulfide, Total 10 mg/Kg 99 ND 93 94 1 0 <br /> pH-Corrosivity N/A pHunits 100 N/A N/A N/A <1 <br /> t� <br /> i <br />