_GENERAL DOCUMENTS - C1981017 ‎(301)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources P F F 74,twi.
1313 Sherman St., Room 215
Denver,Colorado 80203
Phone.[phone]
FAX:[phone]
DEPARTMENT OF
MEMO NATURAL
RESOURCES
May 21, 1999
Roy Romer
Governor
TO: Cheryl Linden,Michael Long—
dames S.Lochhead
Executive Director
FROM: Steve Renner
Michael B Long
Division Director
RE: Coal Basin Stormwater Permit
Attached is a list of the ponds currently included in Mid-Continent Resources NPDES permit,which could
be included in a Stormwater,permit application filed by Minerals and Geology. It is my understanding that
by including a pond in the Stormwater permit,Minerals and Geology is accepting the responsibility for
reclamation of the pond or pond system represented by each outfall number
I have reviewed the materials submitted to the Water Quality Control Division by Mid-Continent regarding
the pending NPDES permit renewal application. The following discharge points have been identified as
mine water discharges by Mid-Continent. Although not specifically stated in the application,I assume that
these outfalls are end-of-pipe points located within the block walls which seal the various mines. These
outfalls would not be included in our Stormwater permit:
Outfall Number Mine Number
002 Mine 4
003 Mine 5
004 Mine 1
005 Mine 3
019 Mine 2
026 Mine 1 Alternate Discharge Point
029 Rock Tunnel
Clarification is needed before Minerals and Geology determines whether to accept the following ponds into
its Stormwater permit:
017: This pond is located at Mine 5. It appears that the intermittent mine water discharge,as well as
stormwater,reports to this pond. It is unclear whether this pond can be considered under the Stormwater
permit as a result of the mine discharge.
021: The Sutey Refuse Pile ponds are described as receiving both surface waters and mine water. The
mine water contribution is reported in the Mid-Continent submittal to be from an underground sump. I
assume that in actuality,this is the discharge from a french drain which conveys near surface ground water
from beneath the facility for stability purposes. Water Quality Control Division probably should be
consulted to determine whether this discharge is,in fact,considered to be mine water. If not,Minerals and
Geology could accept this pond into its permit.
025: This pond is located near the Lamp House,and receives a small volume of water from the Rock
Tunnel. It is unclear whether this pond is considered to be a mine water discharge point or not. If not,
Minerals and Geology could accept this pond into its permit.