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TRACY MATERIALS RECOVERY &TRANSFER FACIL Y <br /> RFI AMENDMENT NO. 3 <br /> year, 24-hour design storm event of 2.8 inches, the run-off amount totals 22,517 <br /> cubic feet, higher than the design storm of 17,000 cubic feet for the 90,000 <br /> square foot pad. The evaporation pond has adequate capacity to retain the run- <br /> off from the enlarge compost pad of 150,000 square feet. <br /> Engineer's Review: <br /> The drainage system is adequate to manage the run-off generated by the <br /> increase size of the compost pad of 150,000 square feet. The run-off from the <br /> wood waste processing pad drains to the retention basin that was designed to <br /> handle 223,025 square feet of service area including the area where the wood <br /> waste processing pad is located today. The current language on page 24 and <br /> page 25 is descriptive with the calculations in Appendix E. The only changes to <br /> the RFI on page 25 would to replace the last line of the first whole paragraph with <br /> the following below: <br /> "The evaporation pond is sized to retain up to 57,500 cubic feet of run-off <br /> without freeboard, and is adequate to retain the 100-year, 24-hour storm <br /> event over 150,000 square feet compost pad for a design storm of 22,517 <br /> cubic feet, leaving approximately 35,000 cubic feet of freeboard capacity." <br /> Appendix E can be supplemented by the current EBA memo, the Edgar & <br /> Associates hydrological calculations, and the as-built plans. The additions to <br /> Appendix E are attached to this RFI Amendment. <br /> EDGAR&ASSOCIATES, INC. 9 MAY 22, 2006 <br />