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Ed Padilla <br /> May 30, 1997 <br /> Page 2 <br /> Air Emissions Estimation Model . The parameters for this model <br /> are as follows and are based on current actual data from the <br /> existing Harney Lane Sanitary Landfill flare: <br /> Methane % 40% average <br /> Non-Methane Organic Compounds 561 parts per million <br /> Generation potential 59 cu. Meters/Mega Gram <br /> As shown on the attached generation data, methane emission peaked <br /> in 1996 at 1 .487 million cubic meters. Methane emission <br /> decreases to approximately 900,000 cubic meters in 2005 and <br /> 575,000 cubic meters in 2015. Methane emission is currently <br /> declining as predicted by the model . <br /> Although the model is based on data from Harney Lane, methane <br /> generation at the Corral Hollow Sanitary Landfill is expected to <br /> be somewhat less than Harney Lane because of its size and lesser <br /> volume of precipitation. <br /> Once again the County acknowledges that gas concentrations at the <br /> perimeter gas wells exceed regulatory limits. However, we do D-Qt <br /> believe the gas migration at the site presents a threat to public <br /> health. Therefore, the County requests an exemption from the <br /> requirement for installation of a gas control system at the <br /> Corral Hollow Sanitary Landfill . if you have any questions <br /> regarding this request, please call me at Extension 83066. <br /> GK:WT:vj <br /> RAVIRGINIAVAEMOSCH-GASEPI <br /> Attachment <br /> c: Scott Walker, California Integrated <br /> Waste Management Board <br /> LA 11458 <br />