Agenda - 02-17-2009 - 4l - Laserfiche WebLink

Browse Search

,... __ ---7-- Al ALMES &ASSOCIATES, INC, . CONSULTING ENGINEERS 1.11 COMMONWEALTH COURT, SUITE 104. CARY, NC 27611-4464 PHONE: (919)319-1187 FP : (919)481-1522 • 'August 25, 1998 • • • . . • Project No: R97-945-595 . . , . Mr. Thomas C. Allen, H , • . . Environmental Engineering Supervisor NC DEHNR Division of Air Quality P.O. Box 29580 Raleigh,North Carolina 27626-0580 ' • Transmittal . , . Recalculation of NMOC Emissions for Title V Applicability Orange Regional Landfill(MSWLF Permit No. 68-01) • . . • 'Chapel Hill,North Carolina , . Dear Mr.Allen: . . . On behalf of the Town of Chapel,North Carolina,Almes &Associates, Inc. (ALMES) has recalculated the rate of past and future Non-Methane Organic Compound (NMOC) emissions for the Orange Regional Landfill. The Landfill is composed of two distinct IvISW disposal units located on separate tracts bisected by.Eubanks Road. The Northern and Southern MSW disposal units of the Orange Regional Landfill have been considered a single emission's source in our evaluations. 1 . . This work fulfills the requirements of the second option stated in,your letter to Orange Regional • . Landfill dated December 1, 1997. Specifically,those options were to either: 1) submit an application for a Title V operating permit or 2) submit additional landfill documentation and recalculation of NMOC emissions demonstrating that the solid waste facility's potential to emit regulated air pollutants is below the 100 ton/year Title V applicability threshold. The North Carolina Department of Environment&Natural Resources, Division of Air Quality's (DAQ) request for further facility documentation and/or permitting was based on the results of the DAQ's calculations of late 1997. The DAQ's calculations,based on information provided in the Initial Design Capacity Report, suggested elevated landfill air emissions rates for Orange Regional Landfill (Table 1): • A general time extension was granted by the DAQ to a number of MSW landfills, including Orange Regional Landfill, following concerns with the short response period,tb.e accuracy of the . . DAQ's December landfill emission estimates, and potential for misinterpretation of the,data 1 • presented in the Initial Design Capacity Report. Most notable, the DAQ's calculations were.. partially based on the very conservative model and default gas generation factors promulgated to evaluate NSPS applicability rather than the AP-42 default factors published for Title V purposes. • - . . . • • . .