2008-08-15_PERMIT FILE - C1981008A

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 8/15/2008
• Doc Name: NPDES Discharge Permit
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-18
• Media Type: D
• Archive: Yes

Part I
Permit No: CO-0000213
Page 16
documentation of the storm event, including the precipitation gauge station (or the permittee's own gauge), the volume of runoff
produced and the steps taken to maintain treatment and minimize the amount of overflow.
For claiming a storm water exemption, the permittee must also adequately demonstrate that all reasonable management, containment,
and treatment options have been optimally utilized.
The storm event exemptions are only applicable for the following parameters at this facility, which are based upon Federal BATBPT
limitations:
Total Suspended Solids
All data/documentationrequired by this section which can not be reported on applicable discharge monitoring report forms
(DMRs) shall be reported in a letter as an attachment to the DMR. Submittal of documentation of containment, maintenance and
precipitation records above does not exempt the permittee from the notification requirements of Part II.A.1 of this pernut.
B. MONITORING REQUIREMENTS
1. Frequency and Sample Type
In order to obtain an indication of the probable compliance or noncompliance with the effluent limitations specified in Part I.A.1,
the permittee shall monitor all effluent parameters at the following frequencies. Such monitoring will begin immediately and last
for the life of the permit unless otherwise noted. The results of such monitoring shall be reported on the Discharge Monitoring
Report form (See Part LE.)
Outfal1007A
~uluent rarameter
Frequency
Sample Twe
Flow, MGD Weekly Instantaneous or Continuous
Total Suspended Solids (TSS), mg/1 Monthly Grab
pH, s.u. (minimum-maximum) Weekly In-Situ
Oil and Grease, mgR Weekly Visual
Iron, Total, ug/1 Monthly Grab
Total Recoverable Iron, ug/1 Monthly Grab
Potentially Dissolved Lead, ug/1 Monthly Grab i/
Potentially Dissolved Manganese, ug/1 Monthly Grab
Potentially Dissolved Selenium, ug/1 Monthly Grab i/
Total Mercury, ug/! Quarterly Grab i/
Total Ammonia as N, mg/1 Monthly Grab
Total Dissolved Solids, mg/1 Quarterly Grab
Settleable Solids, ml/1 Monthly Grab
Whole Effluent Toxicity, Chronic Lethality Quarterly 3 GrabsfI est
Outfa11008A
Effluent Parameter Frequency Sample T}tpe
Flow, MGD Weekly Instantaneous or Continuous
Total Suspended Solids (TSS), mg/1 Monthly Grab
pH, s.u. (minimum-maximum) Weekly In-Situ
Oil and Grease, mg/1 Weekly Visual
Iron, Total, ug/1 Monthly Grab
Total Recoverable Iron, ug/1 Monthly Grab
Total Mercury, ug/1 Quarterly Grab i/
Total Ammonia as N, mg/1 Monthly Grab
Total Dissolved Solids, mg/1 Quarterly Grab
Settleable Solids, ml/1 Monthly Grab
Whole Effluent Toxicity, Acute Semi-Annually 3 GrabsfTest
AMENDED: OCTOBER 24, 2007 EFFECTIVE: DECEMBER 1 2007 EXPIRATION- MARCFI 31 2012
Attachment 2.05.3(3)-18-20