2001-12-11_PERMIT FILE - C1980007A ‎(4)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Old Permits
• Section_Exhibit Name: Exhibit 07 NPDES Permits
• Media Type: D
• Archive: Yes

PART I
Page 11
Permit No. CO-0038776
• MONITORING REQ17IItEhfENTS
3. Acute WET Testine - Outfalls 002. 004. 011 and 013 (continued)
Aay permittee that is required to conduct a PTIlI'IE investigaion shall do so in wafotmaa« with procedures
identified in the following documents, or as subsequen[ly updated: () Methods for Aouatie Toxicity [drntifitation
Evaluations. Phase I Tonicity Characteriratipn Procedures. EPA/600/6-91!003 Feb. 91 apd 2) Methods for Aquatic
Toxicity Identification Evaluazions. Phase R Tonicity identification Procedures. EPAf600/3-88/035 Feb. 1989.
A third da~vmrnt is this series is Methods for Aquatic Tonicity Identification Evaluations. Phase iii Tozieity
Confirmation Procedures. EPA/600/3.88/036 Feb. L989. As indicated by the tide, this pto«dtue is iatrnded m
confirm [hat the sttspected [oxicanc is tndy the mzicant. This investigaion is optional.
Within 90 days of the dtterminazion of the toxicant or no later than 210 days after demmnsttadon of toxicity,
whichever is sooner, a «n[rol program is m be developed and received by the Division. The program shall set
down a method and procedure for elimination of the toxicity to acceptable levels.
(e) Repuest For Relief
The pertnittee may request relief from Curther investigation and toting where the [oxican[ has no[ been determined
and the Division has determined suitable treatment daa not appear possible. fa requesting such relief, the permittee
shall submit material sufficient to establish the following:
(i) It has complied with terms and conditions of the permit complian« schedule for the PTVITE investigation
and other appropriate conditiogs as may have bees requited by the Division;
• (ii) During the period of the msiciry incident it has been in wmplian« with all other permit conditions,
including, in the ebse of a PO'IW, pretreatmen[ requite:mmts;
(iii) During the period of the toxicity incident it has properly maintained and operated all facilities and rystemrs
of tteatmrnt and control; and
(iv) Despite the circumstances described in paragraphs (i) and (iii) above, the sautes and/or cause of toxicity
could no[ be located or resolved.
If deemed appropriate by the Division, the permit or the «mplian« schedule may be modified m revise the ongoing
monitoring and toxicity investigation requirstnen[s to avoid an unproductive expenditure of the permit[ee's resourtcs,
provided tha[ the underlying obligation m elimin~r~ any con[inuing exceedance of the mxiciry limit shall remain.
(f) Spontaneous Disappearance
If toxicity spomaneously disappears az any time after a test failure, the permi[tee shall notify the Division in writing
within 14 days of a demonstration of disappearance of the [oxiciry. The Division may requite the perminee to
develop and submit additional information which may include, but is not limited to, the resulu of additional testing.
If no paztem of toxicity is identified or recurring tonicity is not identified, the toxicity ipcidrnt response is
considered closed and normal WET testing shall resume.
(g) Toxicity Reooener
This permit may be reopened and modified (following proper administta[ive procedures) to include new compliance
. dates, additional or modified numerical permit limitations, a new or different compliance schedule, a change itr the
whole effluent toxicity testing protocol, or any other conditions related to the control of mzicants if one or more of
the following events occur.
Amrndment No. 2 Issued FEB 1 9 1997E~~;,,e APR 0 11991