2010-10-22_HYDROLOGY - C1982056

• Permit No: C1982056
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/22/2010
• Doc Name: Permit/Certification ‎(COG070000 & COG073534)‎
• From: CDPHE
• To: Twentymile Coal LLC
• Permit Index Doc Type: Permit Legal Document
• Email Name: JDM
• Media Type: D
• Archive: No

STATE OF COLORADO
Bill Ritter, Jr., Governor
?p4 0?0
Martha E. Rudolph, Executive Director
Dedicated to protecting and Improving the health and environment of the people of Colorado
4300 Cherry Creek Dr. S.
Denver, Colorado 80246-1530
Phone[phone]
TDD Line [phone]
Located in Glendale, Colorado
http://www.cdpho.state.co.us
October 22, 2010
Jason Davis, Mine Mgr
Twentymile Coal LLC
29515 County Road 27
Oak Creek, CO 80467
Laboratory Services Division
8100 Lowry Blvd.
Denver, Colorado 60230-6928
[phone]
RE: Certification, Colorado Discharge Permit System - Construction Dewatering Operations
Permit Number COG070000 Certification Number: COG073534
Dear Mr/Ms Davis;
tS
N
t r
1846
Colorado Department
of Public Health
and Environment
Enclosed please find a copy of the permit certification, which was issued under the Colorado Water Quality Control Act.
Please read the enclosed permit and certification.
The Water Quality Control Division (the Division) has reviewed the application submitted for the Foidel Creek Mine facility and
determined that it qualifies for coverage under the CDPS General Permit for Construction Dewatering Operations (the permit).
• Basis for Certification Site Specific Parameters
The discharge is to Foidel Creek within segment 13b of the Yampa River Sub-basin, Upper Colorado River Basin, found in
the Classifications and Numeric Standards for the Upper Colorado River Basin (Regulation No. 33). Segment 13b is
Reviewable, and is classified for the following beneficial uses: Aquatic Life, Class 1 Cold; Recreation Class E; and
Agriculture.
General Information
• Permit Action Fees: The Annual Fee for this certification is $500 [category 7, subcat 2 - Construction Dewatering per CRS 25-
8-5021 is invoiced every July. Do Not Pay This Now. The initial invoice will be prorated and sent to the legal contact shortly.
• Changes to the Certification: Any changes that need to be made to the certification page -- changes in outfalls, monitoring
requirements, etc., must be submitted using the "Permit and Certification Modification form" available on our website:
coloradowateryermits.com, and signed by the legal contact.
• Discharge Monitoring Reports (DMRs): DMRs will be mailed out within the next month. Reports must be submitted monthly
as long as the certification is in effect. The permittee shall provide the Division with any additional monitoring data on the
permitted discharge collected for entities other than the Division. This will be supplied to the Division within 48 hours of
the receipt of the data by the permittee. If forms have not been received, please contact the Division at 303-692-3517.
• Sampling Requirements: Sampling shall occur at a point after treatment, or after the implementation of any Best
Management Practices (BMPs). If BMPs or treatment are not implemented, sampling shall occur where the discharge
leaves control of the permittee, and prior to entering the receiving stream or prior to discharge to land. Samples must be
representative of what is entering the receiving stream. A minimum of one sample must be collected for discharges lasting
less than one week.
• Termination requirements: This certification to discharge is effective long term, even though construction and dewatering
discharge are only expected to be temporary. For termination of permit coverage, the permittee must initiate this by
sending the "CDPS Permits and Authorization Termination Form." This form is also available on our web site and must be
signed by the legal contact.
• Groundwater Contamination: If groundwater contamination is encountered, then the permittee is to contact the Division,
the permit writer, cease all discharges, and if appropriate, contact the owner of the collection system receiving the