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Ms . Polly Kratman 17 January 2007 Page 10 The GCCS components for the future waste fill areas will be designed such that it connects to the existing GCCS components wherever possible. Low points in the header system will be located near leachate sump locations, as much as possible, in order to gravity-drain condensate to the leachate sumps for removal using the leachate collection system pumps and force mains. Geosyntec will develop the GCCS Design Plan in order to meet the requirements of Subpart WWW as specified in 40 CFR Part 60. 759 . Geosyntec will prepare a report that will include, but not be limited to, the following components : • description of site characteristics ; • engineering calculations related to the projected gas generation rates, gas well spacing, header and later pipe sizing, condensate removal equipment, etc. ; • discussion of monitoring and recordkeeping requirements ; and • a surface emissions monitoring plan. Geosyntec will submit four copies of the GCCS Design Plan to FDEP Air Resources Management and Solid Waste Group and will address any request for any additional information they may require. It should be noted that, based on recent NMOC calculations, the IRC Class I landfill is not likely to be subjected to the NSPS compliance requirements that includes submission of a GCCS Design Plan. However, it will be beneficial for SWDD to keep FDEP informed of any changes to GCCS at the IRCL facility. Phase 2. GCCS Phasing Plan Once the GCCS Design Plan is complete, Geosyntec will develop phasing plans, each covering an operating period of one year, for a total of five years. Geosyntec will meet with SWDD to understand the planned sequence of filling and cell construction over the next five years . Using available waste stream information, Geosyntec will project the waste surface at the end of each year. This projected waste surface will be used to develop the phasing plan for each year. Geosyntec recognizes that interim design conditions are different from the final design conditions used to develop the GCCS Design Plan. Therefore, the phasing plans will include the components of the final design that will need to be installed during the year represented by the phase. Recognizing that differing conditions include gas generation rate, waste depth, allowable vacuum, etc. will exist during the period covered by the phasing plan, Geosyntec will review the draft phasing plans with SWDD to identify features such as temporary wells with remote XL06230/01 - 17-2007 JL70002.doc Cr ;; 117Gt11- � I SCiUIIUSLS I ililio atur,,