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Page 1 l Colorado Department of Public Health and Environment <br />Construction Permit Air Pollution Control Division <br />TWENTYMILE COAL COMPANY <br />Permit No. 93R01204 <br />Initial Approval -Modification-5 <br />ATTACHMENT A [CONTINUATION - 7] <br />DETAILS OF E UIPMENT/ACTIVITIES COVERED UNDERTHIS FACILITY-WIDE PERMIT <br /> oescRlPnoN <br />AIRS MAKE, MODEL. SM, DESIGN RATE, CAPACITY, DIMENSIONS, REMARKS <br />ID OPERATION RATE, CONSUMPTION, THROUGHPUI, PRODUCTION, SPECIFIC PROVISIONS <br /> EMISSION CONTROLS <br />ISS TRANSFER OF COAL AT BATCH W SIGH STATIONS: <br /> TO BE CONSTRUCTED <br /> NUMBER OF TRANSFER POBJ"TS: 3. <br /> QUANTITY OF COAL TRANSFERRED: 89,700 TONS PER YEAR OVERALL CONTROL EFFICIITICY <br /> FOR TSP AND PM~° IS A MMIMUM <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY ENCLOSURES. OF 80.0 %. <br />159 TRANSFER OF COAL AT CRUSHER HOUSE BATCH WELCH STATION: <br /> TO BE CONSTRUCTED. <br /> NUMBER OF TRANSFER POLNTS: 1. <br /> QUANTrfY OF COAL HANDLED: 5,1 IS TONS PER YEAR. OVERALL CONTROL EFFICIENCY <br /> FOR TSP AND PMi° IS A MMIMUM <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY ENCLOSURES. OF 80.0 %. <br />161 LOADING OF WASTE ROCK FOR HAULAGE OFFSITE: <br /> FRONT END LOADERS ARE USED FOR LOADPG WASTE ROCK INTO FUGITIVE DUST CONTROL PLAN <br /> HAULAG£TRUCKS. <br /> QUANTITY OF WASTE ROCK HANDLED: 250,000 TONS PER YEAR OVERALL CONTROL EFFICIENCY <br /> FOR TSP AND PM,° IS A MMIMUM <br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY SURFACE OF 50.0 °/a. <br /> MOISTURE. <br />162 VENT SHAFT HEATER: <br /> ONE (I) MAKE, MODEL, AND SM: NOT AVABABLE, LIQUH-LED TO BE CONSTRUCTED. <br /> PETROLEUM GAS (LPG) FIRED HEATER DESIGN-RATED AT 2,300,000 BTU EXEMPT FROM NOTIFICATION. <br /> PER HOUR <br /> LPG CONSUMPTION: 80,000 GALLONS PER YEAR <br />163 RECLAMATION OF LOW QUALITY COAL ONTO MOBILE HOPPER- <br /> CONVEYOR: <br /> A FRONT END LOADERS ARE USED. THE HOPPERLONVEYOR IS ~ TO BE CONSTRUCTED. <br /> MOVED/EXTENDED TO MBJIMiZE THE MOVEMENT OF FRONT END <br /> LOADERS. FUGTI7 VE DUST CONTROL PLAN. <br /> QUANTnY OF COAL RECLAIMED: 3 000,000 TONS PER YEAR <br />169 FLYASH I CEMENT CONCRETE HANDLING AND MIXING: <br /> MAKE, MODEL, AND SM: NOT AVAILABLE, FLYASH/CEMENT CONCRETE CONTROL EFFICIENCY FOR <br /> MIXING PLANT. EMISSIONS COMROLLED BY BAGHOUSE. PM-10: MMIMUM OF 99.0 <br /> HAULPIG AND HANDLMG OF MATERIALS. <br /> THROUGHPUT LIMIT: 71,750 TONS PER YEAR <br />END OF ATTACHMENT A <br />107/0009/999 <br />