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GENERAL35216
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GENERAL35216
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Last modified
8/24/2016 7:56:18 PM
Creation date
11/23/2007 8:14:47 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
General Documents
Doc Date
6/4/1981
Doc Name
Proposed Decision and Findings of Compliance
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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plicant has estimated that faulting might yield flows of 5 to 10 gallons per <br />minute on a local short-term basis. yea, frart~~rai pones encoLntersd <br />during mining could potentially yield 100 to 300_ '~^~r minute for a short <br />time. This water will not be pumped into a sediment aond, but will be dis- <br />charged to a holding tank on the surface. Part of the water rill be stored for <br />use i~ tha m;~o, and ~~~ „a +± W;rr no troy+od for use in the surface facili- <br />d~ ties (page II C-106, and C-108). The abandoned Staley-Gordon mine is currently <br />receiving groundwater inflow of one gallon per minute, which is being pumped to <br />the surface and released into the natural drainage system. <br />Sedimentation Ponds <br />Four large sediment ponds will be constructed during the permit term. One will <br />service the D-Portal area and three will receive run-off from four subareas to <br />be developed in the Refuse Disposal area. These ponds are shown on Maps 34, ` <br />78, 79, and 80.`~ <br />Additionally, seventeen small ponds, each with a capacity of less than one <br />acre-foot, will be constructed along the conveyor and maintenance road, the <br />clean coal storage area, and the railroad loop. The entire coal transport <br />/ o <br />system is shown on Maps 10~ ~14. Miscellaneous sumps (se~iment traps) will be <br />constructed to collect run-off from refueling pads (page V-6 ). Two process <br />ponds will be constructed in the D-Portal area as part of the plant water <br />supply and wastewater treatment run-off (see Map 130 of the permit <br />application). These are not designed for collecting surface nin-off, and each <br />will be lined with an impervious membrane to prevent percolation into the <br />groundwater system (page V-7 ). After solids have settled out of the water in <br />these ponds, it will be used for fire control, dust control or as make-up water <br />in the preparation plant (page IV-56). <br />Only the D-Portal pond will require approval from the Office of the State Engi- <br />neer. Portions of the embankment height exceed ten feet, therefore, special <br />requirements were followed during design of the embankment. <br />8 <br />
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