2011-10-24_PERMIT FILE - C1983059

• Permit No: C1983059
• IBM Index Class Name: Permit File
• Doc Date: 10/24/2011
• Section_Exhibit Name: Exhibit 02 Other Permits
• Media Type: D
• Archive: No

COLORADO DE.?ARTMENT OF HEALTH, l~'ater Quality Control Division
Rationale - Page 5. PERMIT NUMBER: COG-850000
EFFLUENT LIMITATIONS
(Continued)
ACTIVE MINING -
P=it ameter
Flow (MGD)
pH (s.u.)
Oil and Gr~:ase (mg/1)
Total Susp~nnded Solids (mg/1)
Total Iron (mg/1)
Settleable Solids (ml/1)
Total Dissolved Solids (mg/1)
(Colo. liver Basin)
Total Phosphorus, as P (mg/1)
Parameter
Table 1
(Applicable Regulations)
SES l~S
BPT BAT NSPS

------------------Monitoring Onl}~-----•------------
6.0 - 9.0 6.5 - 9.0 6.0 - 9.0 N/A 6.0 - 9.0
10 N/A N/A N/A N/A
30/45 N/A 35/70 N/A 35/70
N/A N/A 3.5/7.0 3.5/7.0 3.0/6.0
N/A N/A N/A 0.5 N/A
------Monitor per Colo. Salinity Regulations-------
------Monitoring Dillon Reservoir 9asin Only-------
Table 2
(Final Limitations)
Flow (MGD)
pH (s.u.)
Oil and Gt'ease (mg/1)
Total Sus[~ended Solids (mg/1)
Total Iron (mg/1) (Existing Sources)
Total Iron (mg/1) (New Sources)
Settleable Solids (ml/1)
Total Dis:solved Solids (mg/1)
(Colo. River Basin)
Total Phosphorus, as P (mg/1)
(Dillon Reservoir basin only)
Limitation Basis
Report Monitoring Only
6.5-9.0 WQS
10 SES
35/70 BPT
3.5/7.0 BAT
3.0/6.0 NSPS
0.5 BAT
Report Monitoring Only
Report Monitoring Only
--POST-MINING
Table 3
(Applicable Regulations)
r~
U
parameter SES W(~S BPT BAT NSPS
Flow (MG[~) -----•---------•-Monitoring Only----•--------------
pH (s.u.; 6,0 - 9.0 6.5 9.0 6.0 - 9.0 N/A 6.0.- 9.0
Oil and Grease (mg/1)~~ 10 N/A N/A NJA N/A
Settleab:-e Solids (ml/1) N/A N/A N/A 0.5 0.5
Total Di:;solved Solids (mg/1)
(Co Lo. River Basin) ------Monitor per Colo. Salinity Regulations-------
Total Ph~~sphorus, as P (mg/1} ------Monitoring Dillon Reservoir Basin Only-------