2017-05-11_PERMIT FILE - C1981012 ‎(18)‎

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 5/11/2017
• Section_Exhibit Name: Exhibit 22 NPDES Permit
• Media Type: D
• Archive: No

In TRIM
COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division
Fact Sheet- Page 11, Permit No. C00000906
Table VI -9 - Summary of DMR Data for Permitted Feature 050D (Groundwater well)
Parameter
# Samples
or
Reporting
Periods
Reported Average
Concentrations
Avg/Min/Max
Reported
Maximum
Concentrations
Avg/Min/Max
Previous
Avg/Max/AD
permit Limit
Number of
Limit
Excursions
Temp (°C)
10
16111148
NA
Report
pH (su)
10
7.7/6.9/8.3
8/7.4/8.4
Report
Total Coliform (#/100 ml)
7
8.1/<112387
11/<1/4838
2.2/23
3
Nitrate+Nitrite as N (mgll)
10
5.9/0.7/49
16/0.13/144
10/Report
1
As, Dis (Ngll)
10
0.47/<2/1
0.47/<2/2
Report
Cd, Dis (Ngll)
10
0.39/<2/2
0.52/<2/2.4
50/Report
Cr, Dis (N /l)
10
11<515
1.11<5/5
5/Report
Cu, Dis (Ng II)
10
1.4/<515
1/<5/5
100/Report
Fe, Dis(Ng/l)
10
38/<20/163
721<20I430
200IReport
Pb, Dis (pgll)
10
0.36/<111
0.59/<112.9
300IReport
Mn, Dis (pg1l)
10
22/<110/110
341<1101119
50IReport
1
Hg, Dis(Ngll)
10
0.311<0.000612
0.36/<0.000612
50IReport
Ni, Dis (pg ll)
10
9.81<10/10
9.8/<10110
50IReport
Se, Dis (pgll)
10
5.71<219.2
6.41<2110
100/Report
AS, Dis (Ngll)
10
0.0721<0.210.2
0.0721<0.210.2
50IReport
Zn, Dis(pgll)
10
121<20/20
131<20120
50IReport
Chloride (mg/l)
10
37124152
NAINAINA
2000IReport
Sulfate (mgll)
10
68152/73
74/63/78
250IReport
EC (dSlm)
1 10
63111.1/1195
NAINAINA
250IReport
"The pH data shows the minimum reported values in the average" column, and the maximum reported values in the
"maximum column
B. Compliance With Terms and Conditions of Previous Permit
Effluent Limitations - The data shown in the preceding DMR tables indicate apparent violations of the permit.
During the previous permit term, the facility exceeded permit limitations at surface water outfalls for conductivity
and sodium 30 -day averages (001B and 001C); TSS 30 -day and 7 -day averages (007); total recoverable iron 30 -day
average (007). The violations for conductivity, sodium, TSS and total recoverable iron at these outfalls were
irregular, and did not occur with each sampling event.
The facility also exceeded permit limitations at groundwater monitoring wells for BODS 30 -day and 7 -day average
(033A); TSS 30 -day and 7 -day average (033A); pH maximum (0506); coliform 30 -day average and daily maximum
(0506, 050C, 050D), dissolved iron 30 -day average (0506, 050C); dissolved manganese 30 -day average (0506, 050C,
050D) and nitrate 30 -day average (050C, 050D). As previously noted, internal outfall 033A and associated
groundwater monitoring wells 050A, B, C Et D are not included in this permit renewal. Additionally the facility did
not meet deadlines for compliance schedule items and received DMR violations for delinquencies and deficiencies.
The division has not yet resolved these violations - any enforcement actions for violations of permit terms and
limitations are handled by the Clean Water Compliance Unit.
In accordance with 40 CFR Part 122.41(a), any permit noncompliance constitutes a violation of the Clean Water Act
and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or
denial of a permit renewal application.