Laserfiche WebLink
FL <br /> 4.0 Data Evaluation <br /> Soil sample analytical results are summarized on Tab es 1 and 2. The soil samples were reported <br /> to contain O&G and heavy metals. The samples were not reported to contain TPHg, TPHd, <br /> # } VOCs, BTEX, fuel oxygenate compounds, ethanol/m ethanol, SVOCs, chlorinated hydrocarbons, c <br /> or organochlorine pesticides. <br /> Two soil samples collected from trenches excavated ear the leach lines were reported to contain <br /> O&G. The reported concentrations are not considereJ to be high. The O&G detected in the soil <br /> may ori <br /> samples from the leach p y inate g e ch system. Shaw Anderstands that Caltrans will likely remove <br /> the leach system. <br /> Soil samples collected from the site were reported to contain chromium, lead, nickel, and zinc <br /> (Table 2). The soil samples were not reported to contain cadmium or hexavalent chromium at <br /> concentrations in excess of the respective analytic 1 method reporting limits. None of the <br /> detected heavy metals were present at concentrations that exceeded EPA, Region 9, industrial <br /> soil Preliminary Remediation Goals (Table 2). Heavy metal concentrations were compared to <br /> Total Threshold Limit Concentration (TTLC) and. Soluble Threshold Limit Concentration <br /> F­� (STLC) values to evaluate whether the soil would, should it become a waste, be considered a <br /> _ California-hazardous waste. Generally, TTLC and STLC values for heavy metals are used to <br /> judge whether a waste is a California-hazardous waste based on the total and soluble <br /> concentrations of the heavy metals within the waste. None of the reported results exceeded the <br /> respective TTLC or ten-times STLC values. It is therefore unlikely that the soil, should it <br /> become a waste, would be considered a hazardous waste, <br /> F <br /> N:IsaoDPt2443lPgl8SW35444.3ac.doo 4.1 <br />