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2020-06-25_REVISION - C1981035 (3)
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2020-06-25_REVISION - C1981035 (3)
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Entry Properties
Last modified
1/8/2025 2:37:42 AM
Creation date
6/24/2020 5:11:24 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981035
IBM Index Class Name
Revision
Doc Date
6/25/2020
Doc Name Note
GCCE King II Mine Dunn Ranch Area LBA
Doc Name
Proposed Revision Materials
From
GCC Energy, LLC
To
DRMS
Type & Sequence
PR10
Email Name
JHB
THM
Media Type
D
Archive
No
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Source ID Source Type PM10 I PM2.5 I Emission Type <br /> 011 Crushed Limestone 1.0 0.1 Fugitive <br /> 12.1 1.8 Point <br /> Totals N/A <br /> 17.0 2.2 Fugitive <br /> Mobile sources at the facility include underground mining equipment, listed under source classification <br /> code 2270009010, above ground construction equipment identified under SCC 2270002000, as well as <br /> light duty gasoline trucks and light and heavy-duty diesel trucks.The underground mining mobile sources <br /> are specialized equipment designed to function in the unique environment of an underground mine. <br /> Above ground mobile sources would include heavy construction equipment used for material handling <br /> and stockpile management.To develop appropriate emissions estimates for the mobile sources,the BLM <br /> utilized USEPA's Nonroad Model to generate social cost of carbon (SCC)-specific emissions factors (grams <br /> per horsepower-hour) for Colorado. The BLM used estimated thermal efficiencies of the equipment <br /> engines along with the fuel data from the mine to provide for the overall emissions estimates. <br /> Mine ventilation CH4 emissions are calculated based on CH4 concentration, air flow through the average <br /> ascent speed (VAM) and density. As stated above, 0.2 percent CH4 is assumed. Airflow is 296,269 cubic <br /> feet (ft) per minute (converted to standard flow 227,742 standard cubic ft (scf) per minute). The density <br /> of CH4 is 0.042 Ib/scf Total CH4 emissions are 1.91 lb/min. <br /> The three emergency generators operate 500 hours per year (3,251 horsepower [hp] Cummins unit) or <br /> 250 hr/yr (225 hp Baldor and O'Brien). All emission factors associated with the Cummins generator are <br /> EPA Tier 2 standards.The other two assumed AP-42 emission factors (EPA 1996, Section 3.3,Table 1). All <br /> factors are in units of lb/hp-hr. The King II Mine also utilizes one other propane fueled combustion units. <br /> Calculations assumed a total of 1,698.5 gallons per year of propane (average annual usage between 2011 <br /> and 2012).AP-42 Table 1.5-1 (EPA 2008) is used with factors of lb/103 gal.Total miscellaneous equipment <br /> includes the aggregation of emergency generators and the propane unit. Table 2.2-10 summarizes the <br /> direct emissions estimated from permit exempt stationary and mobile sources for the Proposed Action. <br /> These emissions were correlated to an annual maximum coal production rate of 800,000, 1.1 million, and <br /> 1.3 million tons. <br /> Table 2.2-10 Unpermitted Source Emissions (tpy) <br /> Source PM10 PM2.5 I CO I NO. I VOC I S02 I CO2 I CH4 N20 <br /> 800,000 Tpy <br /> Mine Ventilation N/A N/A N/A N/A N/A N/A N/A 640 N/A <br /> (VAM)l <br /> Misc. Mobile Equip. 0.50 0.50 6.41 13.17 0.84 0.17 1,296 0.06 0 <br /> Underground Mining 1.50 1.46 2.30 8.87 10.54 0.15 666 0.04 0.01 <br /> Equipment(mobile) <br /> Surface Mining <br /> Equipment(mobile) 0.36 0.34 0.43 2.30 4.93 0.08 359 0.01 0.01 <br /> Totals 2.35 2.30 1 9.15 1 24.35 1 16.30 1 0.39 1 2,320 1 640 0.03 <br /> Dunn Ranch Area LBA and Mining Plan Modification 18 <br /> Technical Resources Report <br />
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