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Page 4 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
<br />DETAILS OF EQUIPMENT/ ACTIVITIES COVERED UNDER THIS FACILITY-WIDE PERMIT
<br /> DESCRIPTION
<br />AIRS MAKE, MODEL, SM, DESIGN RATE, CAPACITY, DIMENSIONS, REMARKS
<br />ID OPERATION RATE,CONSUMPTION,THROUGHPUT, PRODUCTION, SPECIFIC PROVISIONS
<br /> EMISSION CONTROLS
<br />101 MINE VENTILATION FANS:
<br /> ONE (1) MAKE, MODEL, AND SM: NOT AVAILABLE, MINE VENTILATION FAN, MAXIMUM CONCEMRATION OF
<br /> DESIGN RATED AT 600,000 ACFM, AND POWERED BY AN ELECTRIC MOTOR PARTICULATE MATTER M THE
<br /> RATED AT 1,250 HP.. THIS FAN IS IDENTIFIED AS MME VEMILATION FAN MME AIR EXHAUSTED MTO THE
<br /> No. 1, AND IS LOCATED ON MINE SHAFT No. I. ATMOSPHERE DOES NOT EXCEED
<br /> 0.5 MILLIGRAM PER CUBIC METER.
<br /> ONE (1) MAKE, MODEL, AND SM: NOT AVAILABLE, MME VENTILATION FAN,
<br /> DESIGN RATED AT 30,000 ACFM, AND POWERED BY AN ELECTRIC MOTOR,
<br /> RATED AT 400 HP.. THIS FAN IS IDENTIFIED AS MME VENTILATION FAN No.
<br /> 2, AND IS LOCATED ON MINE SHAFT No. 2.
<br /> ONE (1) MAKE, MODEL, AND SM: NOT AVAILABLE, MME VEM'ILATION FAN,
<br /> DESIGN RATED AT 600,000 ACFM, AND POWERED BY AN ELECTRIC MOTOR,
<br /> RATED AT 1,000 HP.. THIS FAN IS IDENTIFIED AS MME VEM3LATION FAN
<br /> No. 3, AND IS LOCATED ON MINE SHAFT No. 3.
<br /> ONE (1) MAKE, MODEL, AND SM: NOT AVAILABLE, MME VENTILATION FAN,
<br /> DESIGN RATED AT 150,000 ACFM, AND POWERED BY AN ELECTRIC MOTOR,
<br /> RATED AT 1,300 HP.. THIS FAN IS IDENTIFIED AS MME VEN3rLAT10N FAN
<br /> No. 4, AND IS LOCATED ON MINE SHAFT No. 4.
<br /> ALL THE FOUR (4) FANS RUN CONTMUOUSLY, 8,760 HOURS PER YEAR.
<br />102 TRANSFERS FROM SLOPE BELT TO STACKER TUBE FEED BELT:
<br /> TRANSFER OF WASTE ROCK
<br /> TRANSFER OF COAL
<br /> TOTAL QUANTITY TRANSFERRED: 11,000,000 TONS PER YEAR
<br /> OVERALL CONTROL EFFICIENCY
<br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY ENCLOSNG THE FOR TSP AND PM,e IS A MINIMUM
<br /> TRANSFER POINTS. OF 90.0%
<br />103 TRANSFER FROM STACKER TUBE BELT TO STACKER TUBE:
<br /> TRANSFER OF COAL
<br /> QUANTITY OF COAL TRANSFERRED: 10,000,000 TONS PER YEAR.
<br /> OVERALL CONTROL EFFICIENCY
<br /> EMISSIONS OE PARTICULATE MATTER CONTROLLED BY ENCLOSNG THE FOR TSP AND PM ,u IS A MR4IMUM
<br /> TRANSFER POINTS. OF 90°/.
<br />104 TRANSFER FROM STACKER TUBE TO STOCKPILE:
<br /> TRANSFER OF COAL
<br /> QUANnTY OF COAL TRANSFERRED: 10,000,000 TONS PER YEAR.
<br /> OVERALL CONTROL EFFICIENCY
<br /> EMISSIONS OF PARTICULATE MATTER CONTROLLED BY ENCLOSING THE FOR TSP AND PM,° IS A MINIMUM
<br /> TRANSFER PONTS. OF 90 %.
<br />ATTACHMENT A CONTINt1ED .....
<br />107/0009/999
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