NC0025453_Final Permit_20010820 (2)

Gregory J. Thorpe, Ph.D, Acting Director
Subject:
Dear Mr. Biggs:
cc:
i
NPDES Permit Modification
Clayton/ Little Creek WRF
NPDES Permit No. NC0025453
Johnston County
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
James Warren, ORC? Town of ClaytoiV
Raleigh Regional Office/ Water Quality
Point Source Compliance & Enforcement
Central Files & NPDES Files
EPA Region IV
1617 Mail Service Center, Raleigh, North Carolina 27699-161 7 - Telephone [phone]/FAX [phone] q
an equal Opportunoy ArrnMAnve Act,on employer - 50% recycled/ 10% post-consumer pap^r °7'9
VISIT US ON THE web at http://h2o.enr.state.nc.us/NPDES
State of North Carolina "
Department of Environment
and Natural Resources
Division of Water Quality
Mr. R. Steven Biggs, Town Manager
Town of Clayton
P.O. Box 879
Clayton. North Carolina 27520
NCDENR
North Carolina Department of
Environment and Natural Resources
August 20. 2001
required by the Division of Water
may be required. ' Management Act. or any other Federal or Local government permit that
If you have any questions concerning this modification. please contact Susan Wilson at [phone]. ext. 510.
Sincerely,
Gregory J. Thorpe, Ph.D.
“ A"!“ ■■ 2»‘ *
«.y 2». dM. „ „„
modified the permit to require quarterly monitoring (no limit) only. f°r tOtal 1Cad‘ Therefore- the Division has
„d;cr
collecting samples |ref. 15A NCAC 2B .0505 (c)(4)], P°Se substantial nsk of injury or death to persons
Service Center 6714. Raleigh, North Carolina 27699-67M Un less such d^LTi “"'d of^drninistratlve Hearings. Mall
binding. ' unIess sucn demand Is made, this decision shall be final and
A. (1.)
2.
3.
4.
5.
I
KonS)T UMITATIONS MONTTORING REQUIREMENTS -FINAL
Footnotes:
Town of Clayton
NPDES No. NC0025453
uTnC Hi|hw°ayS42Ea;dE®)UNCSR’lOT8Uesteam 1k°0' D ’ Downstre^i at
collected 3/Week during June - SeptembeS] ^ SampIeS and shaU be
°f 1116the Lower Neuse Basm Association. Instream monitoring shaB be
jation in the
* i *
1. F / -
(1) NC Highway 42 and (2) NCSR 1908.
ye^tasfre^mon^8 — ’ SePtember “d 1/^Iek du^gto
parriciX^X ^Neu^^t7 °f Puttee's
co^ctedas stated in
concentrations shall not
The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
JXrsTdUal ChlOrtne 1S reqUired “■ chi0™e * used as a disinfectant (or elsewhere in the
See Special Condition A.(2.). Total Nitrogen Monitoring.
6 SBSlSSte?^
(seeTp^X^S^X^
9’ 1.2001. A monitoring frequency of
^monitoring data, should ^alu^^
be monitored daily atffle^fflLent tygrab Xple"0'' greater 9-° standard units and shall
n° diSCharge of floatog solids or visible foam in other than trace
1
= TN x 9 x 8.34
onth (MG/montJi)
mass
A. (3.)
(i)
(ii)
(iii)
Town of Clayton
NPDES No. NC0025453
Q
8.34
A. (2.) TOTAL NITROGEN MONITORING
loadings, according t^the foU^Si^lquat^nt! 10adlUg of total nitrogen as sum of monthly
(1) Monthly Mass Loading (Ib/mo)
where:
TN = of the composite
the total wastewater flow discharged during the mi
= conversion factor, fr^fi^g/L x MG] to pounds *
(2) Annual Mass Loading (Ib/yr) = S (Monthiy Mass Loadings) for the calendar year
annual limits for total nitrogen
(1) Serf rT to CondiHon AW °f “3 P^t is deemed waived
grpyideq that the following conditions are met:
a formal agreement between the association and Environmental
Management Commission, as outlined in ISA NCAC 2B. 0234 is
established and is in effect; and
the Permittee is a party to said agreement; and
^reement3110" thC Pernllttee substantially conform with the
(2) So long as the total nitrogen limit m Condition A.(l.) is waived, the groun
nitrogen allocation established pursuant to the agreement referenced above and
any subsequent amendments is hereby Incorporated as an enforceable part of
Liiio pcrmiL.
(C) IfA^,DiViSiOn det=rmines- at any time during the term of this permit, that these
conditions are not being met. it shall notify the Permittee in writing of this
tdh?^«rA°" and °f baSif' Ther conseciuence of such a determination shall be that
the Permittee s annual mass limit for total nitrogen and its effective date shall be
reinstated immediately. The Division shall accept and consider written responses
received from the Permittee and/or the association within thirty (30) days of the
Original notice before making a final decision and wifi provide that decision in writing
A. (3.)
Footnote:
ReqXemeNnU“(ei5^^2^0234)Management Strategy: Wastewater
Town of Clayton
NPDES No. NC0025453
ANNUAL LIMITS FOR TOTAL NITROGEN (coat’d.)
(d) The Permittee shail noHIy the Division hl w
Pe:
be sent to:
A. (4.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLYj
mortallr/ to Cenhd^hnta dXTat^^ent MncSeaU^of reproduc‘Jon significant
-s' “s “
performed during the months of March June Sentemb eque^lt versions- The tests will be
p“i?o2£s wdks JSXSX'STX,
below SI ta 3 or ChV
each of the two following months as described m °NnXh^g b„e Performed at a minimum, in
TooMt, Toot Freorfm- (ReeUeJ-Feb^ 1MS| or oX^SS'.SL" W1”1'
—S »e mem o,lowest concentration that does have a detectable imnT^ 1 °f teProduction or survival and the
definition of "detectable impairment ” collection mSh^i™6"1 of reProduction °r survival. The
methods are specified in the "North Caro ina Ph^e H fUrther statistical
Procedure" (Revised-February 1998) or subsequent version™ ‘ TeSt
DischdrgTMonitortng Fo^MR-^ b£ entered on a,e Effluent'
£s-"-.=ib'
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh. North Carolina 27699-1621
late/than SO^iter^e ^d ofX'r
in^writing within five (5) working days if, at any
Cb,™. 1O
1617 £ Div1slon of Water Quality / NPDES Unit
1617 Mail Service Center
Raleigh. NC 27699-1617
measurements
or
Town of Clayton
NPDES No. NC0025453
) CHRONIC TOXI^y PERMIT LIMIT (QRTRLY) (c<^r d.)
“dan ^ncenfraVon^^
approved designate signature. Total [e^dual ch^ StOry suPervlsor and ORC
measured and reported if chionne is employed
is required. theVeMte^ a ®onth in which toxicity monitoring
report shaII be submitted t0
monitoring Ke^equ^ed mo‘itortag is required.
Division ofWater Su^in^LTe^oteSflTm^cta toX reStSZrfOr™ed 016 North Caroteia
opened and modified to include alternate PeMt be re‘
control organism sprvlvat84 mimmum3 CltK1 document such as minimum
environmental controls, shall con ™tute ZZnvZd°^af“lsnlJ reproduction, and appropriate
testing to tie completed no later than the 1Z davZf thl m^h T}! require immediate folloZ-up
monitoring. Lne last aay the month following the month of the initial
7
PARTI
operation and
2. Permittee shall at all times provide the
easting facilities at optimum effidency.
the peri ^SiXS "Ie °f “W^ce,
probability of meeting the next sciXe^^S^ aCtiOnS
by the effective date of the permit unless
■ Sartos B- Schedule of Compliance
^^^amply With FtM1 Effluent Stations