PERMFILE66158

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 7/17/2007
• Section_Exhibit Name: Exhibit 11 Colorado Discharge Permit -NPDES
• Media Type: D
• Archive: Yes

I
PARTI
Page No. 9
Permit No.: CO-0044776
e. Influent Monitoring
Influent Parameter Freauencv Samnle Tvpe
iFlow,MGD Continuous Recorder
BODs, mg/1 _ Monthly Composite
ITSS, mg/1 Monthly i Composite
~_._.._~___-.._-_ .--_. -- ----.._.---- -.--- _.------_..--_._<_.___ __.__._----._._.__.._.._r
Self-monitoring sampling by the permittee for compliance with the monitoring requirements specified above shall be performed prior
to entering Pond B for Outfall 004.
If the permittee, using the approved analytical methods, monitors any parameter more frequently than required by this permit, then
the results of such monitoring shall be included in the calculation and reporting of the values required in the Discharge Monitoring
Report Form (DMRs) or other forms as required by the Division. Such increased frequency shall also be indicated.
f. Oil and Grease Monitoring
For every outfall with oil and grease monitoring, in the event an oil sheen or floating oil is observed, a grab sample shall be
collected, analyzed, and reported on the appropriate DMR. In addition, corrective action shall be taken immediately to mitigate the
discharge of oil and grease. A description of [he corrective action taken should be included with the DMR.

2. Salinity Parameters
In order to obtain an indication of the quantity of Salinity, measured as total dissolved solids (TDS), being discharged from the site the
permittee shall monitor the wastewater effluent at the following frequencies:
Outfall Freauencv Sample Tvne
001, 002, 003, 004, 005, 006, 007, 008, 009, Quarterly Grab
010
Self-monitoring samples taken in compliance with the monitoring requirements specified above shall be taken at those locations listed in
Pan I.B.I.
Where, based on a minimum of 5 samples, the permittee demonstrates to the satisfaction of the Division that the level of total dissolved
solids (TDS) in the effluent can be calculated based upon the level of electrical conductivity, the permittee may measure and report TDS
in terms of electrical conductivity.
3. Saecial Monitoring
a. Twelve Time Analysis - Outfall 006
In order to determine the quality of water discharged at this facility, the permittee is required to perform a twelve time analysis for
the following parameters at outfall 006. The first sampling shall occur during the first month after the permit becomes effective, or
when discharge commences, and sampling shall continue for the next eleven consecutive months. If no discharge occurs during the
month, sampling shall resume when discharge resumes and continue until twelve samples have been collected and analyzed using
approved methods with method detection limits as low or lower than those specified in Part LE.3. of the permit.
A summary report in [he form of a letter shall be submitted to the Permits Unit by October 31, 2005. This report shall include all
individual sample results collected over the twelve month period. If sampling is incomplete because no discharge occurred during
part or all of the period, this shall be noted in the report. If sampling has not yet been completed by this date, this twelve time
analysis requirement shall continue until twelve samples have been collected and analyzed and the results have been submitted to
the Permits Unit.
.See Part LC. for Definitions.
AMENDED JUNE 28, 2007 EFFECTIVE AUGUST 1, 2007 EXPIRATION AUGUST 31, 2009