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G LFR 0 0 1 <br /> remedial activities successfully removed residual contamination unrelated to the release. , <br /> Additional excavation in the manifold area is not feasible due to limitations imposed by active ' <br /> facility infrastructure. <br /> Confirmation soil sample data indicate that residual petroleum hydrocarbons are still present within , <br /> the manifold area. The site is currently under a monitored natural attenuation (MNA) program as <br /> the remedy for groundwater cleanup at the site. The MNA program includes contingency plans <br /> that could be implemented in the event that free product is detected in site monitoring wells, or if ' <br /> land use in the vicinity changes. The RWQCB approved MNA as the remedy for groundwater at <br /> the site in a letter to SFPP dated 25 March 2005. A feasibility evaluation of the petroleum <br /> hydrocarbons detected in soil after completion of response and remedial activities associated with , <br /> the transmix pump back-pressure valve release will be completed and submitted to the RWQCB by <br /> October 30, 2006. <br /> Closing , <br /> We appreciate your assistance on this project. Please give Mike Pitta (714-560-4875) or either of ' <br /> the undersigned a call at (916) 786-0320 if you have any questions or comments. <br /> Sincerely, , <br /> /Jeremfgh2 Davi H4H &PG. <br /> Project Geologist Senior Associate Geologist , <br /> California Professional Geologist No. 6389 <br /> cc: Mr. Mike Pitta, KMEP 00, ' <br /> Mr. Ken Yeo, KMEP <br /> Attachments DeMd H. Hul ' <br /> No:6389 <br /> Table 1 Waste Characterization Results * yk <br /> Table 2 Confirmation Sample Analytical Results �P ' <br /> Figure 1 Site Vicinity Map �CR�1�P? <br /> Figure 2 Site Plan Showing Approximate Area of Affected Soil <br /> Figure 3 Site Plan Detail Showing Approximate Extent of Excavated Soil ' <br /> Figure 4 Confirmation Sample Results <br /> Appendix A Laboratory Analytical Reports and Chain-of-Custody Documentation <br /> i <br /> 8 i <br />