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Flare Limits <br /> NOx 0.041 lb/MMBtu <br /> CO 0.2 ib/MMBtu <br /> PM10 0.2 lb/MMBtu <br /> TRS 150 ppmv <br /> VOC 20 ppmv as hexane @ 3% oxygen or <br /> 98% destruction efficiency by weight <br /> Ameresco submitted a detailed BACT analysis for the exact same set of sources for the Foothill <br /> Landfill. We believe that the emission levels proposed herein will meet or exceed what has been <br /> determined to be BACT. In the case of the engines,the proposed emission levels for NOx and <br /> CO represent the lowest achievable emission rates (LAER) for LFG-fired engines. Although we <br /> do not believe they meet cost-effective BACT criteria, Ameresco is willing to install the LAER <br /> level of controls to avoid emission offsets for NOx and modeling requirements for CO. For the <br /> flare, the proposed emission levels meet BACT for the type of flare being proposed—waste gas <br /> flare. In order to achieve proper emission control of the waste gas, the emission levels proposed <br /> as BACT are the only ones that can be considered achieved for this type of unit. All of these <br /> levels are consistent with the draft ATC for the Foothill's LFGTE project. <br />