2018-03-26_REPORT - C1981008

• Permit No: C1981008
• IBM Index Class Name: Report
• Doc Date: 3/26/2018
• Doc Name Note: 2011 Thru 2017 Year Report
• Doc Name: Annual Hydrology Report Adequacy Review
• From: Tabetha Lynch
• To: Brock Bowles
• Annual Report Year: 2011
• Email Name: TNL
• Email Name: BFB
• Media Type: D
• Archive: No

Page 1
Review Checklist for Annual Hydrology Report

Mine: New Horizon Mine Date of review: March, 2018
Permit No.: C-1981-008 DRMS reviewer: Tabetha Lynch

Report Year: 2011, and 2013-2017
Submitted by: Elk Ridge Mining and Reclamation, New Horizon Mine (Elk Ridge)
Previously Western Fuels – Colorado, New Horizon Mine
Date Received: January 2, 2018 (2017 water year)
January 4, 2017 (2016 water year)
January 2016 (2015 water year)
December 24, 2014 (2014 water year)
December 24, 2013 (2013 water year)
October 17, 2011 (2011 water year)

Requirement Regulation Comment
1. Filing frequency of
hydrology report
CDRMS regulation
4.05.13(4)(c)
The Annual Hydrology Report (AHR) is
submitted yearly.
2. Timely filing of
hydrology report Section 2.05.6 (3)
AHR is required to be submitted by Dec 31st of the
subsequent water year. The water year at Elk
Ridge is October 1st to September 30th of the
following year. Dates received are listed above.
3. Filing frequency of
NPDES Discharge
Monitoring Reports
(DMRs)
NPDES permit CO-
0000213
DRMS received copies of DMRs monthly. Filing
dates appear to have been generally met at a high
consistency.
4. Timely filing of Discharge
Monitoring Reports
NPDES permit CO-
0000213
DRMS received copies of DMRs. Per page 32 in the
PAP, reports are to be submitted by 28th of following
month. Reports were consistently provided in a
timely manner.
5. Sampling frequency of
NPDES outfalls
NPDES permit CO-
0000213 See NPDES permit for details.
6. Parameters to be sampled
for NPDES reporting
NPDES permit CO-
0000213
See DMRs for details

WET testing is “report only” at Outfall 013 until
9/30/2020
7. NPDES discharge
limitations

NPDES permit CO-
0000213
No consistent exceedances were noted during the
review period. EPA ECHO (Enforcement and
Compliance History Online) was utilized to review
AHRs and identify any patterns of noncompliance.
8. Basic Standards for Surface
Water

CWQCC regulations
31.1.11

This finding of compliance is subject to verification
by the Colorado Water Quality Control Division
9. Instream Numeric
Standards

CWQCC regulation
35.0

Calamity and Tuttle Draws are ephemeral streams
within Segment 12 of the San Miguel River. There
are no water supply uses on these draws. Instream
sampling data for minor exceptions.
10. Anti-degradation Rule
For Surface Water
CWQCC regulations
31.9(2) and 35.0

Segment 12 of San Miguel River (“Use-
Protected”) and not subject to rule.

11. Sampling frequency at
surface water

Table 2.04.7-1 PAP Sampling is occurred per schedule