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4.0 SUMMARY <br /> The following summarizes the anticipated proposed federal Rule impacts and LFG <br /> generation and emission estimates for the Austin Road Landfill Expansion: <br /> • It is anticipated that the federal regulations for control of landfill gas will be <br /> finalized in the fall of 1995 and are expected to be applicable to the Austin Road <br /> Landfill Expansion. The landfill will likely be required to conduct a Tier Two <br /> analysis to determine a site specific NMOL concentration. <br /> • Gas recovery will be required at a minimum in the closure areas of the landfill <br /> and possibly in some of the active areas. As used in this analysis, the "active" <br /> area includes areas with intermediate cover. Because the Austin Road Landfill <br /> Expansion has assumed a phased expansion/closure development strategy, the <br /> proposed federal regulations should not require any changes in the phasing <br /> sequence of the landfill expansion. However, some areas that will be left with <br /> intermediate cover for a an extended period of time may require a gas collection <br /> system. <br /> • The LFG system is expected to have a required capacity in the range of 400 to <br /> 800 CFM at the end of Phase III, and a required capacity in the range of <br /> 2,000 CFM to 3,100 CFM at the end of Phase VI. <br /> • The Pacific Energy power generation facility could be used for LFG treatment. If <br /> there is excess gas requiring treatment or if Pacific Energy discontinues <br /> operations,a flare facility will be required for LFG Treatment. <br /> If you have any comments or questions regarding this report, please contact me at your <br /> convenience. <br /> Very Truly Yours, <br /> R.W.BECK <br /> nw�t <br /> Mark Ingham <br /> Project Engineer <br /> MLIJkk <br /> Attachments <br /> WW-1811-CAl-AA/3110 Austin Road Landfill Expansion August 3,1995 <br /> ML1037.DOC Landfill Gas Generation and Emissions Page 7 <br />