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Rft� Mu <br /> Nil <br /> i <br /> total lead in concentrations u <br /> analysis was conducted on one of the to 6 two tank bottom oryanclead <br /> samples. This analysis indicated a lack of organic lead. soil <br /> wasthe <br /> utotbe a alyzed forOf the Local alth Department, the soluble pardon Oft <br /> In order to get a representative sample, a single borehole <br /> former tank <br /> depth of is', was installed directly through the center� to the <br /> of the <br /> sample wassol <br /> area W04re 2) . From this borehole <br /> This sample was to be analyzed d forgle saluble <br /> lead utilizing the EFA wet test method. <br /> 3.0 Sample Analytical Results <br /> The following discussions summarize the analytical results <br /> soil and groundwater samples collected during the site investithe <br /> tion activities. The soil analytical results are summarized in <br /> Table 1 and the groundwater sample anal } ' ga <br /> in Table 2. The analytical data re ortyis Continued Inare�, presented <br /> Y p <br /> 3.1 Tank T- Appendix B. <br /> 2 Soil Sam Ie Analvtical Resu3ts <br /> w, For the tank T-2 area, a total of seven soil samples were collected <br /> from the borehole. Of these seven sample, <br /> . . traces of TPH as diesel, WESTON'S two exhibited detectable <br /> samples as well as reviewer analytical procedures. <br /> has reanalyzed these <br /> chemist believe these minor traces are .due to e C ipm es. WESTON 'S <br /> ties and are the result of residual compound remaining in thefti aul- <br /> column of their equipment. This residual is <br /> over from the system caiibrat' Presumed to be left <br /> confirmed by the trace TPH conce trationsh detected within cassumptionanbe <br /> -- method blank. The Iaborator <br /> Y prepared data report summary sheet <br /> included in Appendix B <br /> chemist may b . explains this <br /> Y e contacted to confirm this,occurrence and WESTON'S <br /> These seven samples were also analyzed for BTX&E compounds. Of <br /> these seven, thraeoexhibited- detectable :concentrat ons-•of toluene <br /> ranging from...O <br /> Additionally sample=exhibited: :Xyl ene at a concentration::.of::,0.02. y Kne-soil- <br /> designated levels for each of these compounds, as calculated per <br /> the California Regional Water g/ g•. The <br /> Region staff report entitled , The Designated Level Quality Control Board, Central Valley <br /> *haste Classification and cleanup Level Determination ethadola <br /> 1986 and as u " dated October <br /> Updated June 1989 are as follows: <br /> o Toluene - Designated bevel = 100 mg/Kg <br /> o Xylene - Designated Level = 1,750 mg/Kg <br /> 3.2 Tank T-2 h7ater Sam le Anal tical <br /> Results <br /> For the tank T-2 area, one water sample was collected. The,4nitia3, <br /> analyticalst-run- for.Mthe water sar*� <br /> tration. As was. le-exhibited a tce= <br /> _the .TPH-=concen- <br /> - _-case--with--the--soil samplesra <br /> , <br /> laboratory this trace was . <br /> $y$tems problem. The sample was rerun <br /> - 4 - <br />