Laserfiche WebLink
II <br /> I <br /> Unocal Corporation Page 2 <br /> complete, and the plume appears to be stable. Additional information required for a <br /> complete site assessment is site specific data on factors conducive to natural <br /> attenuation such as the presence of hydrocarbon degrading bacteria, oxygen or other <br /> available electron acceptors, Nitrogen, phosphorous, potassium values, soil porosity <br /> and organic carbon content. A survey of wells within 2000 feet of the site and nearby <br /> pathways such as basements and utility line trenches is also required for a complete <br /> assessment. <br /> PHSIEHD recommends that you submit the VES pilot system report as part of a <br /> feasibility study and corrective action plan, continue quarterly monitoring, obtain data <br /> C to support the presence of natural attenuation and perform a receptor survey. <br /> Please contact Steven Sasson at (209) 468-3459 for additional information. <br /> Donna Heran, RENS, Director _ <br /> Environmental Health Division' <br /> Steven Sasson, Seni REHS Margaret,Lagorio, RENS <br /> Site Mitigation Unit Lead Senior <br /> SS <br /> cc: Elizabeth Thayer, CVRWQCB <br /> Mel Jacobo, SWRCB <br /> Andrew Lehane, Pacific Environmental Group, Inc. <br /> i <br />