2014-01-09_REPORT - C1981010

• Permit No: C1981010
• IBM Index Class Name: REPORT
• Doc Date: 1/9/2014
• Doc Name: 2012 Annual Hydrology Report Review
• From: DRMS
• To: Trapper Mining, Inc
• Annual Report Year: 2012
• Permit Index Doc Type: Hydrology Report
• Email Name: JLE
• Email Name: SB1
• Media Type: D
• Archive: No

Requirement
Regulation
Reviewed
Comment
H. Antidegradation
MCC
regulations
Trapper is not subject to the Antidegradation Rule because
Rule for Surface
3.1. 9(2) and
NA
the receiving waters (Segment 3b of Lower Yampa River)
"Use-
Water
J.J.O.
are designated Protected."
I. Interim Narrative
CWQCC
Standard for
regulation
Yes
Ground Water
41.5.C.6
Sampling frequency changed during the fourth quarter due to
Table 4.8 -11
NPDES permit renewal and TR110. Overall, it appears
J. Sampling
ofCDRMS
Trapper has conducted surface water monitoring in
frequency at
mining
Comment
accordance with the approved monitoring frequency. Several
surface water
permit C -81-
issues in regards to the parameters monitored were noted
monitoring sites
010
upon review of the surface water monitoring data submitted.
These items are discussed in detail in the next section.
• Zinc is a parameter to be monitored semi - annually-
for outfalls required to report list A -3 parameters.
zinc measurements were not reported in the AHR.
Trapper will need to monitor and report Zinc levels
as required by the monitoring plan.
• For outfall 002, 005, 011, 013, 014, 015, 017, 018,
020 and 021 no settleable solids measures were
reported in the AHR for 2012. Settleable solids
values were reported in the first, second and third
quarter discharge monitoring reports. For the fourth
quarter, settleable solids are required to be reported
as an alternate limitation in the event of an
exceedance of the primary effluent limitation during
a precipitation event. It appears the majority of the
settleable solids values recorded throughout the year
K. Parameters to be
Table 4.8 -12
were simply not transferred to the AHR for 2012.
sampled at
of CDRMS
• Total suspended solids was not reported on a
surface water
mining
per mit C -81-
per
Comment
monthly basis for Outfalls 001, 011 and 020 for this
sites
year.
• For outfalls 001, 002, 011, 014, 017, 018, 020 and
021; iron was not reported monthly as required. Iron
was monitored and reported in the required NPDES
discharge monitoring reports. However, these values
need to be reported in the AHR.
• Total dissolved solids was not monitored during the
fourth quarter of 2012 for outfalls 011 as was
required.
• Aluminum was not reported semi - annual as required
by the monitoring plan for outfalls 011.
• No discussion of observations of oil and grease are
included in the AHR. Oil and grease are monitored
in the discharge monitoring reports submitted to
CDPHE and copied to the Division.
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