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 I I
Permit Vo. CO-0038776
B. hIOMTORL~IG REQUIItEhIENT'S
3. Acute WET Testing - Outfalls Ol 1. 013 and 0t7 (continued)
Any permittee tha[ is required to conduct a PTI/TIE inves[iga[ion shall do so in conformance with procedures
iden[ified in the following documents, or as subsequen[ly updated: 1) Methods for Aquatic Tozici[v ldentification
Fvaluations. Phase [ Tonicity Characterize[ion Procedures, EPA/600/6-9I/003 Feb. 9I and 2) Methods for Agymic
Tonicity Identification Evaluations. Phase [I To~ici[v Identification Procedures, EPA/600/3-88/035 Feb. 1989.
A third document in dtis series is Methods for Aquatic Tonicity Tdentification Evaluations. Phase III Tonicity
Confirms[ion Procedures, EPA/600/3-38/036 Feb. 1989. As indicated by the tile, this procedure is in[ended [o
confirm the[ the suspec[ed [ozicanr is truly the toxicant. This investiga[ion is optional.
Within 90 days of the de[ermina[ion of [he [ozicant or no la[er [han 210 days after demonstration of toziciry,
whichever is sooner, a control program is to be developed and received by the Division. The program shall set down
a method and procedure for elimina[ion of the tonicity to acceptable levels.
(e) $gguest For Relief
The permittee may reques[ relief from further inves[igation and tes[ing where the [ozicant has no[ been determined and
the Division has determined suitable treatment does not appear possible. In requesting such relief, [he permittee shall
submit ma[erial sutficien[ to establish the following:
(i) It has complied with terms and conditions of the permit compliance schedule for [he PT[/TIE investiga[ion
and other appropriate conditions as may have been required by the Division;
(ii) During the period of the [oziciry incident it has been incompliance with all other permit conditions,
• including, in the case of a POTW, pre[reatmen[ requiremen~s;
( iii) During the period of the [oziciry incident it has properly maintained and operated all facilities and systems of
rrea[ment and control; and
(iv) Despite [he circumstances described in paragraphs (i) and (iii) above, the source and/or cause of toziciry
could nor be located or resolved.
If deemed appropriate by the Division, the permi[ or the compliance schedule may be modified to revise [he ongoing
moni[oring and [oziciry investiga[ion requirements [o avoid an unproductive ezpendimre of [he permittee's resources,
provided dta[ [he underlying obliga[ion [o eliminate any continuing ezceedance of the toziciry limit shall remain.
(f) ~ponraneous Disappearance
If toziciry spontaneously disappears a[ any [ime after a test failure, dte perminee shall no[ify d[e Division in wri[ing
within Id days of a demonstration of disappearance of the toziciry. The Division may require the permittee to develop
and submit additional informs[ion which may include, but is no[ limi[ed [o, the results of additional testing. If no
pattern of [oziciry is iden[ified or recurring toziciry is not iden[ified, [he toziciry incident response is considered closed
and normal WET [esting shall resume.
(g) Tozici[v Reooener
This permit may be reopeaed and modified (following proper administra[ive procedures) to include new compliance
daces, additional or modified numerical permi[ limi[ations, a new or differen[ compliance schedule, a change in [he
whole effluent [oziciry testing protocol, or any other conditions related [o the control of [ozicants if one ar more of [he
following events occur:
Amendment Yo. Z Issued FEB I9. 1997 Effective APR Ol. L997
Amendment No. 4 Issue~Fp +n Effectivk
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