Laserfiche WebLink
Limited Environmental Investigation May 21, 1990 <br /> Proposed Unocal Station, Stockton, California AGS 30010-1 <br /> The results of the laboratory analyses of the soil samples are shown on Table 3. The <br /> concentrations of hydrocarbons, VOC's, PCB's and pesticides were below the detections <br /> levels for the analyses used. Lead, chromium, and zinc were detected at total <br /> concentrations below the respective Soluble Threshold Limit Concentrations (STLC) <br /> outlined in Title 22, California Administrative Code, Section 66699. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> The results of the field investigation and laboratory analyses indicate that soil beneath the <br /> site has not been adversely affected by the selected constituents. Detections of heavy metal <br /> in soil samples probably indicate naturally-occurring conditions. Applied GeoSystems <br /> recommends no additional subsurface environmental investigation at this site at this time. <br /> LIMITATIONS <br /> This report was prepared in accordance with generally accepted standards of environmental <br /> geological practice in California at the time this investigation was performed. This <br /> investigation was conducted solely for the purpose of evaluating environmental conditions <br /> of the soil and ground water with respect to selected constituents at the site. No soil <br /> engineering or geotechnical references are implied or should be inferred. Evaluation of the <br /> 10 <br /> AR,014901 GeoSystems <br />