2009-01-12_PERMIT FILE - C1996083 ‎(2)‎

• Permit No: C1996083
• IBM Index Class Name: Permit File
• Doc Date: 1/12/2009
• Section_Exhibit Name: Volume IIIA Exhibit 11 Colorado Discharge Permit -NPDES
• Media Type: D
• Archive: No

PART 1
Page No. 9
Permit No.: CO-0044776
B. MONITORING REQUIREMENTS
1. Freguency 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 l.E.)
a. Outfalis 001.002, 003, 005, 007, 008, and 009
Effluent Parameter
Flow~M GD
Total Suspended Solids (TSS), mg/1
ipH, s.u. (minimum-maximum)
...~.~ r .._.._._ _ _... _.. __
Oil and Grease, mg/l
iTotal Dissolved Solids, mg/1_
'Total Iron, ug/1
,Settleable Solids, ml/1
.Weekly ~ ^` Instantaneous or Continuous
Monthly Grab
Weekly ~_._ __.. ._......._..__....._ In-situ .__..___._..._
..:.. _..
Weekly Visual
Quarterly Grab
1Vl onfh'ly . Grab
Monthly Grab
ITotal hon ug/1 M;ontlily Grab
1....... ----.....~ ... ._..._..- --.. .._._..... __ _ ...._........
Whole Effluent Toxicity, Chronic ~ Quarterly 3 Composites/Test
c. Outfalls 006 and 010
Effluent Parameter Frequency Sample Type
Total Recoverable Arsenic, ug/I Monthly Grab
Potentially Dissolved Cadmium, ugJl Monthly Grab
Total Recoverable Trivalent Chromium, ug/1 Monthly Grab
Potentially Dissolved Copper, ug/1 Monthly Grab
Total Recoverable Iron, ug/I Monthly Grab
Dissolved Iron, ug/I Monthly Grab
Dissolved Manganese, ug/I Monthly Grab
Total Mercury, ugll * Monthly Grab
Potentially Dissolved Nickel, ug/I Monthly Grab
Potentially Dissolved Selenium, ugll Monthly Grab
Potentially Dissolved Silver, ug/I Monthly Grab
Potentially Dissolved Zinc, ug/I Monthly Grab
*Low level Mercury Monitoring Required