PERMFILE133656

• Permit No: M1977300
• IBM Index Class Name: Permit File
• Doc Date: 9/30/1978
• Doc Name: REGULAR 112 PERMIT APPLICATION FORM
• Media Type: D
• Archive: No

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continue to be an integral part of mining operations. Based upon past
records and the conditions which presently exist, the mine d_watering
program diverts on the average of 700,000 gallons of water per day
from the mine, through the water treatment plant and settling ponds,
then into Ralston Creek. Dewatering is accomplished by a se'^i es of
underground stage pumps with power requirements totalling 60() horse-
power.
Prior to October, 1972, water from the mine was treated for removal
of solids in a small sedimentation pond and pond effluent way: then con-
veyed to Ralston Creek by a ditch. Periodically, the sludge sediments
from the pond were transferred to evaporation ponds on the exist side
of Ralston Creek (see Exhibit A). The dried sludge was then removed
and transported to the Cotter Mill in Canon City, Colorado.
Since October, 1972, several additions and improvements to water

diversion and impoundment facilities have been made. Water lumped
from the mine is now diverted to the water treatment plant (ei small
quantity of water is diverted to the ore sorter then recycled to the
treatment plant) from which it is diverted to Ralston Creek. A
summary of these facilities follows.
Description of Diversion and Impoundment
Figure D-3 depicts the general plot plan of the water treatment

and impoundment system now in operation at the Schwartzwalder Mine.
The distances of various facilities from Ralston Creek are indicated
on the plan. A block flowsheet indicating process flows for diversion,
impoundment and treatment of mine and ore sorter effluents is shown in
Figure D-4.
D-5