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with a centrifugal water separator. Moisture thus acquired / <br /> is expected to contain detectable concentrations of fuel <br /> hydrocarbons and will either be discharged to the sanitary sewer .-- <br /> or <br /> ewer .--or decontaminated on-site within a small biological treatment <br /> unit. <br /> It is proposed that the destruction of extracted vapors be either <br /> by adsorption onto granular activated carbon (GAC) or by <br /> catalytic oxidation. <br /> Interim sampling of the extracted vapor stream will be conducted <br /> and measurements taken of TPH, carbon dioxide, and oxygen. <br /> The measurements will be used to document degradation, and <br /> determine the need for adjustments/modifications in the SVE <br /> system. <br /> Uriah proposes to install the additional soil borings and the <br /> SVE extraction well, and begin operation of the pilot SVE system <br /> during the month of September ( 1992 ) . <br /> Should you have any questions, or if we may otherwise be of <br />' assistance, please contact either of the undersigned at ( 510 ) <br /> 455-4991 . <br /> Sincerely, <br /> ^ <br /> 9'4a�.' <br /> Viorica-Adriana Constantanescu, M.Sc. o9p,4fESS1p,Vq <br /> Hydrogeologist r���'��� P OC��ye <br /> �a <br /> No 11079 <br /> Robert Oldham, P.E. <br /> Registered Cavil Engineer <br /> VAC/RO: r QFCAL�F� <br /> enc. Figures 1 -5 <br /> Appendix A. . .Boring Logs, Well Construction Details, <br /> Well Monitoring Forms <br /> Appendix B. . .Reports of Certified Analyses <br /> cc: Central Valley Regional Water Quality Control Board <br /> Mr. Larry Deutsch, City Thrift and Loan <br /> Mr. Al Hillman, Grubb and Ellis <br /> II <br /> 10. <br />