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Page 10 Colorado Department of Public Health and F.Ilvironment <br />Constmction Permit Air Pollution Control Division <br />TWENTYMII.E COAL COMPANY <br />Petmit No. 93R01204 <br />• Initial Approval -Modification-5 <br />ATTACHMENT A [CONTINUATION - 6] <br />DETAILS OF EOUiPMENT / ACTMTTES COVERED IINi]ER THTS FACILITY-WIDE PERMTT <br />• <br /> <br /> DFSCRIPIION <br />AIRS MAKE, MODEL SM, DESIGN RATE, CAPACITY, DIMENSIONS, REMARKS <br />ID OPERATION RATE, CONSUMPRON, THROUGHPUT, PRODUCTION, SPECIFIC PROVISIONS <br /> EMISSION CONTROLS <br />143 SCREENING RV TRIPLE SCREEN PLANT: <br /> THREE (3) MAKE, MODE4 AND SMs: NOT AVARABLE, VIBRATING <br /> SCREENS, EACH MEASURING 34• X 48 ", DESIGN RATES: RATE <br /> LIMITED BY FRONT END LOADER FEEDING. <br /> QUANTITY OF COAL SCREENED: SCREEN 1: 500,000 TONS PER YEAR: OVERALL CONTROL EFFICIENCY <br /> SCREEN 2: 413,000 TONS PER YEAR: SCREEN 3: 300,000 TONS PEA FOR TSP AND PM,° IS A MINIMUM <br /> YEAR. OF 70.0 <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY PARTIAL <br /> ENCLOSURES. <br />144 LOAD-IN AND LOAD-OUT AT TRTPLE SCREEN PLANT: <br /> NUMBER OF TRANSFER POQJ'rS: 2 <br /> QUAN'ITIY OF COAL HANDLED: 300,000 TONS PER YEAR <br /> OVERAII. CONTROL EFFTCIENCY <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY PARTIAL FOR TSP AND PM,o IS A MRJIMUM <br /> ENCLOSURES. OF 70.0 %. <br />143 WASTE ROCK TRANSFERS: <br /> WASTE ROCK ]S TRANSFERRED FROM BELT TO GROUND. <br /> QUANTTTY OF WASTE ROCK HANDLED: 1,000.000 TONS PER YEAR <br /> OVERAII. CONTROL EIFICIENCY <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED W17N SURFACE FOR TSP AND PM,o IS A MINIMUM <br /> MOISTURE. OF 50.0 %. <br />146 WASTE ROCK STOCKPILE: <br /> EMISSIONS FROM STORAGE PILE. FUGirIVE DUST CONTROL PLAN <br /> AREA OF STOCKPBE: 0.2 ACRE. <br /> OVERALL CONTROL EFFICIENCY <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY SURFACE FOR TSP AND PM,° IS A MRVU4UM <br /> MOISTURE. OF 30.0 Yo. <br />149 LOADING AND UNLOADING OF LOW OUALrrY COA L: <br /> FRONT END LOADERS ARE USED. FUGITIVE DUST CONTROL PLAN <br /> QUA14'ITPY OF COAL HANDLED: 300.000 TONS PER YEAR. <br />132 WASTE ROCK STOCKPILES: <br /> FUGTTNE DUST CONTROL PLAN <br /> TOTAL AREA OF STOCKPB.ES: 75 ACRES. <br /> OVERALL CONTROL EFFICIENCY <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY SURFACE FOR TSP AND PM,° IS A MR4IMUM <br /> MOISTURE. OF 30.0 %. <br />133 ACTTVITTES ON WASTE ROCK STOCKPILES: FUGITIVE DUST CONTROL PLAN <br /> TOTAL OPERATION RATE: 8,000 HOURS PER YEAR OVERALL CONTROL EFFICII7JCY <br /> FOR TSP AND PM,o I$ A MQ4IMUM <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY SURFACE OF 30.0 %. <br /> MOISTURE <br />ATTACHMENT A CONTINUED ..... <br />107/0009/999 <br />