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Olmsted County Resource Recovery Facility EAW April, 1984 24ae continued e Rochester area is designated attainmer., for to al suspended particulates (TSP), lead, oxides tof niit trogrl en he criteria pot ozanes New ,ource Review requirements in nonattainment areas apply t new sources whicl emit 100 tons per year (TPY) or more of the pollutant or which the area nonattainment. Estimated annual emissions of 502 rom the proposed facilit will exceed 100 TPY. Estimated CO emissions ar less than 100 TPY. Facility must control their emissions of nonattainme pollutants to the lowest ach evable emission rate (LAER). In offset then w emissions must be met. Offsetsaareon�nt to ductionsrineemiss of a pollutan at another source in the area. Off ets are measured in lons tons per year o the nonattainment ,pollutant. Since the Rochestis nonattainment for a S02 ambient air quality standards (AAQS) :\ntheproposed facility i a major source of S02, LAER must be demoand emissions of et for S02. These require- mE�nts do not applemissions since lie proposed facility is not a major source of Cttainment requi ements will apply unless the area is redesignattainment pri to pezmittin of th f ' For a nc-r source to be iss d -'st be offset by reducing t e ea by a 1.1 to 1 amount or xemption provisions can be ut �tructed when offsets ,ire not, g e acility. an ai emissions facility permit, S02 E '.ssions S02 emissions of an existing source in k.he or If sufficient offsets are not available, zed which allow such facilities to be con- ilable . A possible scenario for th propos Campus facility is to offset its emissionsby the retiremen of the lens at the Associated Milk Producers (AMPI) facility. Negot bons are cu rentl underway to ' Inc' facility with its xe y Y provide the AMpI qu ed steam from a Campus facility. Assuming that these negotiations ar successful, and I agrees to limit or eliminate use of its boilers part of the needed ffset may be available. The MPCA 1980 em4ision inventory data Indic es that the AMPI facility emitted 58 TPY 'of SO2. Thus, the proposed wa to to energy Campus facilityes estimated annual emissions could be reduced by 58 TPY. However, the offset rule requires/that a net reduction in S02 emirs ns of equal to or greater than 132 TPY be obtained. In addition, the MPCA's proposed administrative pot y wide ceiling on sulfur dioxide emissions requires tha of greater than 100 TPY due to the operation of a new offset by an equivalent reduction in sulfur dioxide emi sensitive areas. 3c regarding the state- S02 emissions ource must be 4 ions in acid rain