2011-08-18_HYDROLOGY - M1977306

• Permit No: M1977306
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/18/2011
• Doc Name: Colorado Discharge Permit System
• From: Water Quality Control Division
• To: Cotter Corporation
• Email Name: GRM
• Media Type: D
• Archive: No

COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division
Rationale — Page 2, Permit No. C00036251
JD -7 Mine — Outfall 001A: The discharge point for this mine is in the SE
'/4 near the center of Section 16, T46N, R17W, New Mexico P.M., on the
northern hillside of Monogram Mesa, at latitude 38 14' 21.8" N,
longitude 108 45'02.9" W. The wastewater discharges to an unnamed
tributary which flows in a northerly direction to East Paradox Creek, then
approximately 8 miles to the Dolores River. The total distance from the
outfall to the Dolores River is approximately 12.5 miles.
JD -7 Mine — Outfall 001B: JD -7 overburden and waste storage areas
(mine waste dumps), discharge point at latitude 38 14' 24.8" N, longitude
108 45' 00.1" W.
JD -9 Mine — Outfall 002A: The discharge point for this mine is in the NW
'/ near the center of Section 30, T46N, R17W, New Mexico P.M., on the
top of Monogram Mesa, (N 38 12' 46.4" W 108 47' 13.7 "). The
wastewater from outfall 002A discharges to an unnamed tributary to Fawn
Springs, which goes to Bull Canyon then to the Dolores River. The total
distance from the discharge point to the Dolores River is approximately
10.5 miles.
JD -9 Mine — Outfall 002B: JD -9 overburden and waste storage areas
(mine waste dumps), discharge point (N 38 12' 24.6" W 108 47' 20.8 "),
located just below the mine waste dump.
JD -9 Mine — Outfall 002C: JD -9 overburden and waste storage areas
(mine waste dumps), discharge point (N 38 12' 26.3" W 108 47' 21.7 "),
located just below the mine waste dump.
Note that the permittee may decide, during the course of this permit, to route the wastewater from the mine
dumps (OO1B, 002B and 002C) to the main treatment facility outfalls (OO1A and 002A). If this is done, the
permit may be modified to eliminate these outfalls.
According to the rationale to the previous permit "the discharge from the outfalls do not reach the receiving
waters of East Paradox Creek or Bull Canyon, tributaries to the Dolores River, except during major storm
events." It is not expected that the discharge from any of the outfalls would reach the Dolores River.
D. Discharge Point:
E. Facility Flows:
JD -7 Mine — Outfall 001A: 0.2MGD
JD -7 Mine — Outfall 001B: Flow from Waste Dump
JD -9 Mine — Outfall 002A: 0.3MGD
JD -9 Mine — Outfall 002B: Flow from Waste Dump
JD -9 Mine — Outfall 002C: Flow from Waste Dump
F. Major Changes From Last Renewal:
Inclusion of a provision that requires the permittee to contain the initial effluent until analyses have
confirmed that all numeric effluent limitations can be met.
Water from the JD -7 mine and JD -9 mine waste dumps (1.98 acres and 2.4 acres respectively),
described in the Cotter Corporation's Stormwater management Plan (SWMP), have been included in this
permit as process water. This process water was mis- categorized in the SWMP as stormwater. Three
new outfalls have been included from the mines waste dumps.