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Weiss nssoculEs M() <br /> SUMMARY <br /> Weiss Associates (WA) collected and analyzed samples from soil beneath propylene <br /> glycol storage tanks 1, 5 and 6 and sodium dichromate/calcium chloride storage Tanks 7 and <br /> 8. Propylene and ethylene glycol were detected in the samples beneath Tanks I and 6, but not <br /> in the samples beneath Tank 5. Only hexavalent chromium in the samples beneath Tank 8 <br /> exceeded California Department of Health Services (DHS) Soluble Threshold Limit <br /> Concentrations (STLC). The chromium, calcium and chloride concentrations in the Tank 8 <br /> samples exceeded the background concentrations of these compounds in native soil. The <br /> analytic results for the Tank 7 samples were similar to background concentrations in native <br /> soil. <br /> F:\ALL\331D W G\331L1FE9.W P Page iv <br />