PERMFILE126728

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 12/18/2006
• Doc Name: NPDES Permit
• Section_Exhibit Name: Tab 07 Appendix 7-5
• Media Type: D
• Archive: No

PART]
Page No. l6
Permit No.: CO-00007
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ii, The pennittee must, by llecember 31, 2008, submit a progress report summarizing the efforts undertaken by the
permittee for a site specific ]imitation for total recoverable iron, in regards to the WQCC hearing for the Upper
Colorado River Basin, as well as the WQCC decision from the mlemaki~tg hearing in June 2008.
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iii. The permittee must, by September 30, 2008, s Submit to the Division an amendment request for either updating the
limitatiar for total recoverable iron based upon a site specific standard (if approved by the WQCC), or for additional
time to meat the ]imitation which currently takes effect on Jmmary 1, 20(19,.
Upon approval of the implementation plan by [he Division, all ternts and conditions of the implementation plan, including
bn[ not limited to the compliance schedule, will automatically become conditions of this permit.
6. Chrmtic WF.T Testing -- Outfalls R'TA ,WTB, WTC, WTD, WTE, WTF, WTG, WTH, WTI
a. Testing and Reporting Requirements
Tests shalt be done at the frequency listed in Part LB. t. Test resuhs shall be reported on the Discharge Monitoring
Report (DMR) submitted for the reporting period during which the sample was taken. (i.e., WET testing results for the
first calendar quarter ending March 31 shall be reported with the DMR due April 28 J The results shall be submitted on
the Chronic Toxicity Test report form, available from [he Division. Copies oFthese reports are to be submitted to both
the Division and EPA along with the DNIR.
The permittee shall conduct each chronic WET test in general accordance with methods described Short Term Methods
for Estimating the Chronic Toxicity of Effluents and Receiving Waters [o Freshwater Or anQ isms, EPA/600/4-89/001 or
the most current edition, except as modified by the most current Division guidance document entitled Guidelines for
Conducting Whole Effluent Toxicity Tests. The permittee shall conduct such tests using Ceriodaphnia dubia and fathe.
minnows. ~.
Alternative Test Method As the discharges from this facility are occasionally, "intermittent discharges", an alternative
method for sample collection during WET testing may he needed. The pennittee shall collect all needed samples (3) for
WET testing on the same day, and store them for firmre use, if it becomes necessary. If the discharge continues to flow
on the days that the subsequent samples would normally have been collected, the pennittee shall collect [he sample in
accordance with the EPA guidance document. If the discharge flow has ceased; the pennittee shall use the stored
samples and ship them to the laboratory as needed. The permittee shall follovr the WET sampling guidance found in
EPA document EPA-600-4-91-002 when ever possible.
b. Failure of Test and Division iVotiticatinn
Outfalls WTB (Outfall 004) and WTE (Outfall 008) -Beginning oh the effective date of this permit, a chronic WET
test is failed whenever there is a statistically significant difference in lethality lxtween the control and any effluent
concentration less than or equal to the instream waste concentration ("IWC"). The IWC for all outfalls has been .
determined to be 100%. The pennittee must provide written notitication of [hr. failure of a WET [es[ to [he Division,
along with a statement as to whether a Preliminary Toxicity Investigation ("P77~:)/Toxicity Idemification Evaluation
("TIE") or accelerated testing is being performed. Notification must be received by the Division within 2I calendar
days of the demonstration of chronic WET in the routine required test. "Demonstration" For the purposes of
subparts b.. c., d., e. and g. means no later than the last day of the laboratory test.
Outfulls WTA (outfalls 00? and 003), Outfall WTC (Outfall 0051, Outfall WTD (Ouifall 006), Ou[fall WTF
(Outfall 0l0), Outfall WTG (Outfall Oll), and Outfall WTI (Outfall 016 and 017) -Beginning on the effective date
of the (imitation (January 1, 2008) a chronic WE'f test is failed whenever there is a statistically significant difference in
lethality between the control and any effluent concentration less than or equal to the instream waste concentration
("IWC"). The IWC for these outfalls has been determined to be 100%. The permittee must provide written notitication
of the failm e of a W ET test to the Division, along with a statement as to whether a Preliminary Toxicity Investigation •
("PTI")/Toxicity Identification Evaluation (""CIE") or accelerated testing is being perforated. Notification most be
received by the Division within 21 calendar days of the demonstration of chronic ~VFT in the routine required
test. "Demonstration" for the purposes of subparts b., c., d., e. and g. means nit later than the last day of the laboratory
test. Prior to the limitation becoming effective, the pennittee is to monitor and report the WET test results for these
outfalls.