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<br />Travel/equipment blanks and blind duplicates were used to provide quality assurance and ,'
<br />1!^ control " The analytical results for the blanks were' below the dP—tection limits of the' I"I
<br />"BTEXJir and total lead analyses The analytical+results for the March�30, 1992 blind duplicate
<br />sample (MW -20) were within seventeen percent for each of the analytical parameters, [(TFH
<br />(16%) and benzene (171 of the original sample'(MW-1) The detection limit for,each
<br />analysis is shown on the analytical report (Appendix B) The chemical data /assessed by" the
<br />above review are considered' adequate and valid for, their intended use. I
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<br />Selected soil samples were analyzed for total lead byIEPA method 7420; WET (citric buffer)
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<br />lead by EPA inethod 7420 and clay content by test method ASTM D422 The laboratory
<br />results are presented in Appendix B These analytical results are suminanzed in Table 1
<br />' 3 2 1 Tank Excavation
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<br />The analytical results for total lead for the twelve -samples collected in the tank excavation!
<br />i ranged from 6 1 t 25 mg/kg Eight soil samples Iwithjotal,lead concentrations greater than
<br />m n b w r orE equal -to 43 mg/kg were analyzed for , WET lead e i�Theil analytical results ; for , WET 'lead
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<br />ranged from'0:45 to 14 mg/L The clay content by; size; from',�'1 tol6'percent clay
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<br />The /analytical results for areas, A and B for, total, ll were 9 4 to 12 mg/kg respectively
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