NC0023906_Final Permit_20040114

December 31, 2003
i
*3
Dear Mr. Brice:
• The typographical errors have been corrected (Items 1., 2., and 4. of your letter).
i
Other than those changes listed above, no major changes have been made to this final permit
from the draft pennit dated July 30, 2003.
Mr. Russell Brice, WWMF Manager
City of Wilson
P.O. Box 10
Wilson, North Carolina 27894-0010
In accordance with the application for discharge permit, the Division is forwarding
herewith the subject NPDES permit for the City of Wilson, Hominy Creek Wastewater Management
Facility (WWMF), NPDES No. NC0023906. This permit is issued pursuant to the requirements of
North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated May 9, 1994.
The Division of Water Quality (the Division) received your comments, dated August 27,
2003, on the draft permit. Based on these comments, the following changes have been made from
the draft permit:
• The Division recently changed some items in the boiler plate (standard) language of individual
NPDES permits. This included the postmark date of the DMRs (modified from the 30th day
following the reporting period to the 28th day of the reporting period). This was modified
because February, excluding leap years, only has 28 days.
• As explained in Item 3 of your comment letter, the Division is aware of some of the delays with
final approval of the BNR addition. Based on your comments, the Division has agreed to allow
the City of Wilson until November 1, 2004 to meet the more stringent ammonia requirements.
The Division is limited in how much time may be offered to comply with this requirement,
since a schedule of compliance was placed in the previous permit.
If any parts, measurement frequencies, or sampling requirements contained in this permit
are unacceptable to you, you have the right to an adjudicatory hearing upon written request
within thirty (30) days following receipt of this letter. This request must be in the form of a
written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the office of Administrative Hearings, Mail Sendee Center 6714, Raleigh, North Carolina
27699-6714. Unless such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of
Water Quality. The Division of Water Quality may require modification or revocation and
reissuance of the permit.
Some minor changes have been made to the permit based on EPA Region IV comments
(specifying “total” metals and “total suspended solids").
' William G. Ross, Jr., Seer
Department of Environment and Natural Resou
Michael F. Easley, Gc
State of North C<
Subject: NPDES Final Permit
Wilson - Hominy Creek
Permit No. NC0023906
Wilson County
[phone]
FAX [phone]
On the Internet at http://h2o.enr.state.nc.us/
.O'
o'
co I
O Alan W. Klimek, P.E., Direc
f Division of Water Qual.
1 r- 1 ——.
T
North Carolina Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
cc:
Mr. Brice
Page 2
This permit does not affect the legal requirements to obtain other permits which may be required
by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act. or
any other federal or local governmental permit.
Mr. Charles Pittman III, Deputy City Manager, City of Wilson
Central Files
Roosevelt Childress, EPA Region IV
Raleigh Regional Office/Water Quality Section
NPDES Unit
Aquatic Toxicology Unit
If you have any questions regarding this NPDES permit, please contact Susan Wilson at
(919) 733 - 5083, extension 510.
*Sincerely,
□riginsi Signed
□avid A. GoaMc"
Alan W. Klimek, P.E.
r
Permit No. NC0023906
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
is hereby authorized to discharge wastewater from a facility located at
to receiving waters designated as Contentnea Creek in the Neuse River Basin
This permit shall become effective February 1, 2004.
This permit and the authorization to discharge shall expire at midnight on May 31, 2008.
Signed this day December 31, 2003.
City of Wilson
Hominy Creek Wastewater Management Facility
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Water Quality Commission, and the
Federal Water Pollution Control Act, as amended.
in accordance with the discharge limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
Alan W. Klimek, P.E., Director
Division of Water Quality
By the Authority of the Environmental Management Commission
Wilson - Hominy Creek WWMF
Old Stantonsburg Road
Wilson
Wilson County
Wilson/ Hominy Creek WWTP
NPDES No. NC0023906
Original Signed By
A. GoodiW;
\1
Permit No. NC002G
SUPPLEMENT TO PERMIT COVER SHEET
is hereby authorized to:
1.
2.
3.
Discharge wastewater from said treatment works at the location specified on the
attached map into Contentnea Creek which is classified C Sw-NSW waters in Neuse
River Basin.
City of Wilson
Hominy Creek Wastewater Management Facility
C itv of Wilson
Hominy ( reek WWMF
\PDES N<> ^00023006
AU previous NPDES Permits issued to this facility, whether for operation or discharge, are
hereby revoked. [The exclusive authority to operate this facility arises under this permit. Thu
authority to operate the facility under previously issued permits bearing this number is no
longer effective.) The conditions, requirements, terms and provisions of this permit
authorizing discharge under the NPDES govern discharges from this facility.
Continue to operate an existing 14 MGD wastewater treatment facility consisting of
mechanical bar screens, manual bar screen, grit chamber, preaeration, primary
clarifiers, biological nutrient removal, extended aeration basins, secondary clarifiers,
polishing ponds, tertiary filters, methanol feed system, chlorination and
dechlorination, post aeration, and anaerobic digesters located at Hominy Creek
WWMF, Old Stantonsburg Road, Wilson, Wilson County, and
Continue to operate a water reclamation and distribution system to provide beneficial
reuse for treated effluent from the treatment plant, as approved pursuant to Permit No.
WQ0020915.
87
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City of Wilson
Hominy Creek WWMF
NC0023906
34°40'37"
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77O54'51"
E27NW, Wilson
C-Swamp NSW
Receiving Stream: Contentnea Creek, Neuse River Basin
Permitted Flow: 14 MGD
Daniels ,»
Chapel -I
Longitude:
Quad #:
Stream Class:
7
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A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
I
Effluent Characteristics
Flow Recording
5.0 mg/l 7.5 mg/l Daily Composite
Composite10.0 mg/l 15.0 mg/l Daily
30.0 mg/l 45.0 mg/l Daily Composite
Composite2.0 mg/l 6.0 mg/l Daily
4.0 mg/l Composite Effluent12.0 mg/l Daily
Composite Effluent1.0 mg/l 3.0 mg/l Daily
Composite Effluent2.0 mg/l 6.0 mg/l Daily
200/100 ml 400/100 ml
Grab18 pg/l
TN Load8
6-9
During the period beginning on the effective date of the pennit and lasting until expiration, the
Permittee is authorized to discharge up to 14 MGD of municipal wastewater from outfall 001.
Such discharges shall be limited and monitored by the Permittee as specified below:
Weekly
Average
Daily
Maximum
Monitoring Requirements
Sample Type
City of Wilson
I lominv Creek WWMf
M’DES No. NC002 W>
Fecal Coliform (geometric mn)5
Fecal Coliform (geometric mean)
Conductivity
Conductivity
Measurement
Frequency
Continuous
Quarterly
Monthly
Monthly
Daily
Daily
3/Week
Composite
Composite
Composite
Calculated
Calculated
Calculated
Composite
Grab
Grab
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Effluent
Upstream &
Downstream
Effluent
Upstream &
Downstream
Effluent
Effluent
Effluent
Upstream &
Downstream
Effluent
Upstream &
Downstream
Effluent
Effluent
Effluent
Effluent
Sample
Location1
Influent or
Effluent
Influent &
Effluent
Influent &
Effluent
Influent &
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Daily
Weekly
Weekly
Weekly
Monthly
Monthly
Annually
Weekly
Daily
3/Week
Daily
3/Week
Daily
3/Week
BOD, 5 day (209C)2
[April 1 - October 31]
BOD, 5 day (205C)2
[November 1 - March 31]
Total Suspended Solids2
Total Residual Chlorine6
TKN (mg/l)
NO2-N + NO3-N (mg/l)
TN (mg/l)7__________
Total Monthly Flow (MG)
Chronic Toxicity11'
Total Copper
Total Zinc_______
pH12
Limits
Monthly
Average
14 MGD
Monitor & Report
Monitor & Report
Monitor & Report
Monitor & Report
Monitor & Report
157,684 Ib/year (Annual Mass Loading)9
2.0 mg/L (Quarterly Average)Total Phosphorus 10
Temperature (9C)
Temperature (gC)
NHsasN [April 1-October31] 3
[Through October 31,2004]
NHa as N [Nov. 1 - March 31] 3
[Through October 31,2004]
NHa as N [April 1 - October 31] 3
[Beginning November 2004]
NHa as N [Nov. 1 - March 31] 3
[Beginning November 2004]
Dissolved Oxygen4_________
Dissolved Oxygen
IFootnotes:
4. The daily average dissolved oxygen effluent concentration shall not be less than 7.0 mg/1.
5. Refer to Condition A. (6) regarding fecal coliform limits.
12. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
11. Chronic Toxicity (Ceriodaphnia dubia) P/F at 90%: February, May, August, and November [see
Special Condition A.(4)J. Toxicity monitoring shall coincide with metals monitoring.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
(Continued)
City ol Wilson
Hominy Creek WWMF
NPDIiSNo. NC(K)23906
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not
exceed 15% of the respective influent value (85% removal).
3. See Condition A.(5) regarding phased NH3-N limits. More stringent NH3-N limits shall become
effective November 1, 2004.
7. TN means Total Nitrogen. For a given wastewater sample, TN is the sum of Total Kjeldahl
Nitrogen and Nitrate-Nitrite Nitrogen: TN = TKN + NO2-N + NO3-N.
1. Sample locations: Upstream at Old Blackcreek Road and downstream at NC Highway 222.
Stream samples shall be grab samples and shall be collected 3/Week during June - September
and 1 /Week during the remaining months of the year. Instream monitoring is provisionally
waived in light of the permittee’s participation in the Lower Neuse Basin Association.
Instream monitoring shall be conducted as stated in this permit should the permittee
end its participation in the Association.
6. Total residual chlorine monitoring is required only if chlorine or a chlorinated compound is
used as a disinfectant (or elsewhere in the process).
8. TN Load is the mass load of TN discharged by the Permittee in a period of time. See Special
Condition A.(2.), Calculation of TN Loads.
9. The annual TN Load limit shall become effective with the calendar year beginning on January
1, 2003. Compliance with this limits shall be determined in accordance with Special Condition
A.(3.), Annual Limits for Total Nitrogen.
10. The quarterly average for total phosphorus shall be the average of composite samples collected
weekly during the calendar quarter (January-March, April-June, July-September, October-
December).
a.
TMF
8.34
b.
a.
b.
i.
c.
i.
ii. Annual TN Load (lb/yr) = Sum of the 12 Monthly TN Loads for the calendar year
The Permittee shall report monthly Total Nitrogen results (mg/L and Ib/mo) in the discharge
monitoring report for that month and shall report each year's annual results (Ib/yr) in the
December report for that year.
Allowable changes include those resulting from purchase of TN allocation from the
Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation between the
Permittee and other dischargers; regionalization: and other transactions approved by the
Division.
( ily ot Wilson
Hominy Creek WWMI-
\PI.)ES No. NCOO23OO6
A.(3.) ANNUAL LIMITS FOR TOTAL NITROGEN
Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin are annual limits and are applied for the calendar year.
For any given calendar year, the Permittee shall be in compliance with the annual TN Load
limit in this Permit if:
the Permittee’s annual TN Load is less than or equal to said limit, or
ii. the Permittee is a Co-Permittee Member of a compliance association.
The TN Load limit in this Permit (if any) may be modified as the result of allowable changes
in the Permittee’s TN allocation.
the average Total Nitrogen concentration (mg/L) of the
composite samples collected during the month
the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
conversion factor, from (mg/L x MG) to pounds
where:
TN
ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
iii. Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
iv. Application shall be sent to:
NCDWQ / NPDES Unit
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
A.(2.) CALCULATION OF TOTAL NITROGEN LOADS
The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load (Ib/mo) = TN x TMF x 8.34
If the Permittee is a member and co-permittee of an approved compliance association, its TNd.
i.
ii.
iii.
e.
A. (4.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90 %.
All toxicity testing results required as part of this permit condition will be entered on the Ef
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using th
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additic
DWQ Form AT-3 (original) is to be sent to the following address:
The permit holder shall perform at a minimum, quarterly monitoring using test procedures
outlined in the “North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,” Revised
February 1998, or subsequent versions or “North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised-February 1998) or subsequent versions. The tests will be
performed during the months of February, May, August, and November. Effluent sampling for
this testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
The chronic value for multiple concentration tests will be determined using the geometric mean •
the highest concentration having no detectable impairment of reproduction or survival and the
lowest concentration that does have a detectable impairment of reproduction or survival. The
definition of "detectable impairment,” collection methods, exposure regimes, and further statis
methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised-February 1998) or subsequent versions.
Ho'
If the test procedure performed as the first test of any single quarter results in a failure or
ChV below the permit limit, then multiple-concentration testing shall be performed at a
minimum, in each of the two following months as described in “North Carolina Phase II
Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent
versions.
expiration of this Permit and are not affected by the Permittee’s membership in a compliance
association.
discharge during that year is governed by that association’s group NPDES permit and the TN
limits therein.
The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association’s group NPDES permit.
Association roster(s) and members' TN allocations will be updated annually and in
accordance with state and federal program requirements.
If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association’s NPDES permit.
(1) Upon receipt of timely and proper notification, the Division will modify the permit
as appropriate and in accordance with state and federal program requirements.
(2) Membership changes in a compliance association become effective on January 1
of the year following modification of the association’s permit.
The TN monitoring and reporting requirements in this Permit remain in effect until
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
A. (4.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) (cont’d.)
A. (5.) Effective Date for More Stringent NH3-N Limits
A. (6.) Fecal Coliform Compliance Condition
Test data shall be complete, accurate, include all supporting chemical/physical measurements
and all concentration/response data, and be certified by laboratory supervisor and ORC or
approved designate signature. Total residual chlorine of the effluent toxicity sample must be
measured and reported if chlorine is employed for disinfection of the waste stream.
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no
later than 30 days after the end of the reporting period for which the report is made.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring
is required, the permittee will complete the information located at the top of the aquatic toxicity
(AT) test form indicating the facility name, permit number, pipe number, county, and the
month/year of the report with the notation of “No Flow" in the comment area of the form. The
report shall be submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re­
opened and modified to include alternate monitoring requirements or limits.
The limits of 2 mg/1 (April 1 - October 31) and 4 mg/1 (November 1 through March 31) shall be in
effect until November 1, 2004. at which time new limits of 1 mg/1 and 2 mg/1 shall become
effective.
City of Wilson
I lominv ( ieek WWMI-
XPDES \o
Should the City of Wilson be deemed by the Division of Water Quality to be chronically
noncompliant with the weekly average and/or monthly average fecal coliform limit after
completion of the expansion to 14 MGD, the City shall submit plans and specifications within 90
days after notification by the Division. The plans and specifications shall provide for an
adequately designed chlorine disinfection facility. If another method of disinfection is proposed, it
should conform to conventional design parameters, as well as any minimum requirements
specified by the Division. Bidding and subsequent construction of the project shall commence
immediately after the issuance of the Authorization to Construct permit.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate
environmental controls, shall constitute an invalid test and will require immediate follow-up
testing to be completed no later than the last day of the month following the month of the initial
monitoring.
1.
2.
3.
4.
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloro naphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1.2- dichlorobenzene
1.3- dichlorobenzene
1.4- dichlorobenzene
3.3- dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2.4- dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
lndeno( 1.2.3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
City of Wilson
Hominy Creek WWMF
NPDESNn. NC0023906
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1 -dichloroethane
1,2-dichloroe thane
Trans-1,2-dichloroethylene
1.1 -dichloroethylene
1.2- dichloropropane
1.3- dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1.1.2.2- tetrachloroethane
Tetrachloroethylene
Toluene
1.1.1 -trichloroethane
1.1.2- trichloroethane
Trichloroethylene
Vinyl chloride
Acid-extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2.4- dichlorophenol
2.4- dimethylphenol
4.6- dinitro-o-cresol
2.4- dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2.4.6- trichlorophenol
Base neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo (ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
A. (7.) EFFLUENT POLLUTANT SCAN
The permittee shall perform an annual pollutant scan of its treated effluent for the following
parameters:
The total set of samples analyzed during the current term of the permit must be representative
of seasonal variations.
Samples shall be collected and analyzed in accordance with analytical methods approved
under 40 CFR Part 136.
Unless indicated otherwise, metals must be analyzed and reported as total recoverable.
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved
by the Director, within 90 days of sampling. Two copies of the report shall be submitted along
with the DMRs to the following address: Division of Water Quality, Water Quality Section,
Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
r
Section A. Definitions
collected twice per month with at least ten calendar days between sampling events.
Version 6/20/2003
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
NPDES Permit Requirements
Page 1 of 16
three separate calendar days.
Calendar Quarter
One of the following distinct periods: January' through March, April through June, July through September, and
October through December.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
use of a
greater than 1/24 of the
2/Mon th
Samples arc
3/Week
Samples arc collected three times per week on
Act or "the Act"
The Federal Water Polludon Control Act, also known as the Clean Water Act, as amended, 33 USC 1251, et. seq.
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system, which
is not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However, for purposes of this permit, anv
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 ml in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The
Director may designate the most appropriate method (specific number and size of aliquots necessary, the time
interval between grab samples, etc.) on a case-by-case basis. Samples may be collected manually or automatically.
Composite samples may be obtained by the following methods:
(1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour
period of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection, or
(3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period
with the time intervals between samples determined by a preset number of gallons passing the sampling
point. Flow measurement between sample intervals shall be determined by use of a flow recorder and
totalizer, and the preset gallon interval between sample collection fixed at no
expected total daily flow at the treatment system, or
(4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at
a constant time interval. This method may only be used in situations where effluent flow rates vary
less than 15 percent. The grab samples shall be taken at intervals of no greater than 20 minutes apart
during any 24-hour period and must be of equal size and of no less than 100 milliliters. Use of this method
requires prior approval by the Director.
Annual Average
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar year. In.the case of fecal
coliform, the geometric mean of such discharges.
Version 6/20/2003
NPDES Permit Requirements
Page 2 of 16
Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act.
Daily Maximum
The highest “daily discharge” during the calendar month.
DWQ or “the Division”
The Division of Water Quality, Department of Environment and Natural Resources.
EMC
The North Carolina Environmental Management Commission.
Instantaneous flow measurement
A measure of flow taken at the time of sampling, when both the sample and flow will be representative of the total
discharge.
In accordance with (4) above, influent grab samples shall not be collected more than once per hour.
Effluent grab samples shall not be collected more than once per hour except at wastewater treatment systems
having a detention time of greater than 24 hours. In such cases, effluent grab samples may be collected at
intervals evenly spaced over the 24-hour period that are equal in number of hours to the detention time of the
system in number of days. However, the interval between effluent grab samples may not exceed six hours nor
the number of samples less than four during a 24-hour sampling period.
Grab Sample
Individual samples of at least 100 ml collected over a period of time not exceeding 15 minutes. Grab samples can be
collected manually. Grab samples must be representative of the discharge (or the receiving stream, for instream
samples).
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the
calendar day for purposes of sampling. For pollutants measured in units of mass, the "daily discharge" is calculated as
the total mass of the pollutant discharged over the day. 4 he "daily discharge" concentration comprises the mean
concentration for a 24-hour sampling period as either a composite sample concentration or the arithmetic mean of all
grab samples collected during that period. (40 CFR 122.3)
Facility Closure
The cessation of wastewater treatment at a permitted facility, or the cessation of all activities that require coverage
under the NPDES. Completion of facility closure will allow this permit to be rescinded.
Daily Sampling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. The Division expects that sampling shall be conducted on weekdays except where holidays or other
disruptions of normal operations prevent weekday sampling. If sampling is required for all seven days of the week
for any permit parameter(s), that requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
Geometric Mean
Die Nth root of the product of the individual values where N = the number of individual values. For purposes of
calculating the geometric mean, values of “0” (or “< [detection level]”) shall be considered = 1.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Section B. General Conditions
1.
a.
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Upset
An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements. An upset does not include noncompliance caused by
operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive
maintenance, or careless or improper operation.
Duty to Comply
The Permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation
of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuance,
or modification; or denial of a permit renewal application [40 CFR 122.41].
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Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
Permit Issuing Authority
The Director of the Division of Water Quality.
Quarterly Average (concentration limit)
The average of all samples taken over a calendar quarter.
case of fecal
b. The Clean Water Act provides that any person who violates section 301,302, 306, 307, 308, 318 or 405 of the
Act, or any permit condition or limitation implementing any such sections in a permit issued under section
402, or any requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8)
of the Act, is subject to a civil penalty not to exceed $25,000 per day for each violation. [40 CFR 122.41 (a)
(2)]
The Permittee shall comply with effluent standards or prohibitions established under section 307(a) of the
Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under
section 405(d) of the Clean Water Act within the time provided in the regulations that establish these
standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been
modified to incorporate the requirement.
Severe property damage
Substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable,
or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Weekly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the
coliform, the geometric mean of such discharges.
Monthly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month. In the case of fecal
coliform, the geometric mean of such discharges.
c. The Clean Water Act provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or
405 of the Act, or any condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act, or any requirement imposed in a pretreatment program approved under section
402(a)(3) or 402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or
imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a
negligent violation, a person shall be subject to criminal penalties of not more than $50,000 per day of
violation, or by imprisonment of not more than 2 years, or both. [40 CFR 122.41 (a) (2)]
e.
f.
g-
2.
sludge
3.
4.
5.
6.
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Dun,’ to Mitigate
The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment
[40 CFR 122.41 (d)].
Oil and Hazardous Substance Liability'
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee
from any responsibilities, liabilities, or penalties to which the Permittee is or may be subject to under NCOS 143-
215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the Permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.
Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302,
306, 307, 308, 318 or 405 of this Act, or any permit condition or limitation implementing any of such
sections in a permit issued under section 402 of this Act. Administrative penalties for Class I violations are
not to exceed $10,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed
$25,000. Penalties for Class II violations are not to exceed $10,000 per day for each day during which the
violation continues, with the maximum amount of any Class II penalty- not to exceed $125,000. [40 CFR
122.41 (a) (3)]
Civil and Criminal Liability
Except as provided in permit conditions on "Bypassing" (Part II. C. 4), “Upsets” (Part II. C. 5) and "Power
Failures" (Part II. C. 7), nothing in this permit shall be construed to relieve the Permittee from any
responsibilities, liabilities, or penalties for noncompliance pursuant to NCOS 143-215.3, 143-215.6 or Section 309
of the Federal Act, 33 USC 1319. Furthermore, the Permittee is responsible for consequential damages, such as
fish kills, even though the responsibility for effective compliance may be temporarily suspended.
Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act,
and who knows at that time that he thereby places another person in imminent danger of death or serious
bodily injury, shall, upon conviction, be subject to a fine of not more than $250,000 or imprisonment of not
more than 15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment
violation, a person shall be subject to a fine of not more than $500,000 or by imprisonment of not more than
30 years, or both. An organization, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction
of violating the imminent danger provision, be subject to a fine of not more than $1,000,000 and can be fined
up to $2,000,000 for second or subsequent convictions. [40 CFR 122.41 (a) (2)]
d. Any person who knowing violates such sections, or such conditions or limitations is subject to criminal
penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In
the case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal
penalties of not more than $100,000 per day of violation, or imprisonment of not more than 6 years, or both.
[40 CFR 122.41 (a) (2)]
Property Rights
The issuance of this permit does not convey any property rights in either real or personal property, or any
exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor
any infringement of Federal, State or local laws or regulations [40 CFR 122.41 (g)].
Under state law, a civil penalty of not more than $25,000 per violation may be assessed against any person
who violates or fails to act in accordance with the terms, conditions, or requirements of a permit. [North
Carolina General Statutes § 143-215.6A]
Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
8.
a.
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1.
2.
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11. Signatory Requirements
AU applications, reports, or information submitted to the Permit Issuing Authority shaU be signed and certified
[40 CFR 122.41 (k)].
activity regulated by this permit after the expiration date of this permit, the
permit [40 CFR 122.41 (b)].
9. Duty to Reapply
If the Permittee wishes to continue an
Permittee must apply for and obtain a new
Duty to Provide Information
The Permittee shaU furnish to the Permit Issuing Authority, within a reasonable time, any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or
terminating this permit or to determine compliance with this permit. The Permittee shaU also furnish to the
Permit Issuing Authority upon request, copies of records required by this permit [40 CFR 122.41 (h)].
b. AU reports required by the permit and other information requested by the Permit Issuing Authority shaU be
signed by a person described in paragraph a. above or by a duly authorized representative of that person. A
person is a duly authorized representative only if:
The authorization is made in writing by a person described above;
The authorization specified either an individual or a position having responsibUity for the overaU
operation of the regulated facUity or activity, such as the position of plant manager, operator of a weU or
well field, superintendent, a position of equivalent responsibUity, or an individual or position having
overaU responsibUity for environmental matters for the company. (A duly authorized representative may
thus be either a named individual or any individual occupying a named position.); and
3. The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22]
10. Expiration of Permit
The Permittee is not authorized to discharge after the expiration date. In order to receive automatic
authorization to discharge beyond the expiration date, the Permittee shall submit such information, forms, and
fees as are required by the agency authorized to issue permits no later than 180 days prior to the expiration date.
Any Permittee that has not requested renewal at least 180 days prior to expiration, or any Permittee that does not
have a permit after the expiration and has not requested renewal at least 180 days prior to expiration, wUl subject
the Permittee to enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
7. Severability
The provisions of this permit are severable. If any provision of this permit, or the application of any provision of this
permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the remainder
of this permit, shall not be affected thereby [NCGS 150B-23].
All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible
corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in
charge of a principal business function, or any other person who performs similar policy or decision
making functions for the corporation, or (b) the manager of one or more manufacturing, production, or
operating facilities, provided, the manager is authorized to make management decisions which govern the
operation of the regulated facility including having the explicit or implicit duty of making major capital
investment recommendauons, and initiating and directing other comprehensive measures to assure long
term environmental compliance with environmental laws and regulations; the manager can ensure that
the necessary systems are established or actions taken to gather complete and accurate information for
permit application requirements; and where authority to sign documents has been assigned or delegated
to the manager in accordance with corporate procedures .
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or
ranking elected official [40 CFR 122.22].
Section C. Operation and Maintenance of Pollution Controls
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The ORC of each Class I facility must: .
Visit the facility at least weekly
> Comply with all other conditions of ISA NCAC 8G.0204.
a. or b. of this section shall make the
Once the facility is classified, the Permittee shall submit a letter to the Certification Commission designating the
operator in responsible charge:
a. Within 60 calendar days prior to wastewater being introduced into a new system
12. Permit Actions
This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the
Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned
changes or anticipated noncomphance does not stay any permit condition [40 CFR 122.41 (f)].
13. Permit Modification, Revocation and Reissuance, or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the
permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations
contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina
Administrative Code, Subchapter 2H .0100; and North Carolina General Statute 143-215.1 et. al.
1. Certified Operator
Upon classification of the permitted facility by the Certification Commission, the Permittee shall employ a
certified water pollution control treatment system operator in responsible charge (ORC) of the water pollution
control treatment system. Such operator must hold a certification of the grade equivalent to or greater than the
classification assigned to the water pollution control treatment system by the Certification Commission. The
Permittee must also employ one or more certified Back-up ORCs who possess a currendy valid certificate of the
type of the system. Back-up ORCs must possess a grade equal to (or no more than one grade less than) the grade
of the system [15A NCAC 8G.0201].
The ORC of each Class II, III and IV facility must:
> Visit the facility at least daily, excluding weekends and holidays
> Properly manage and document daily operation and maintenance of the facility
> Comply with all other conditions of 15A NCAC 8G.0204.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 2H.0105 (b) (4)
may cause this Division to initiate action to revoke the permit.
Changes to authorization: If an authorization under paragraph (b) of this section is no longer accurate
because a different individual or position has responsibility for the overall operation of the facility, a new
authorization satisfying the requirements of paragraph (b) of this secuon must be submitted to the Director
prior to or together with any reports, information, or applications to be signed by an authorized
representative [40 CFR 122.22]
d. Certification. Any person signing a document under paragraphs
following certification [40 CFR 122.22]:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate
the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations."
2.
3.
4.
a.
b.
c.
a.
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Notice [40 CFR 122.41 (m) (3)]
(1) Anticipated bypass. If the Permittee knows in advance of the need for a bypass, it shall submit prior
notice, if possible at least ten days before the date of the bypass; including an evaluation of the
anticipated quality7 and effect of the bypass.
(2) Unanticipated bypass. The Permittee shall submit notice of an
II. E. 6. (24-hour notice).
or back-up ORC.
cause effluent limitations to be exceeded, but
asses are not subject to the
5. Upsets
Effect of an upset [40 CFR 122.41 (n) (2)]: An upset constitutes an affirmative defense to an action
brought for noncompliance with such technology based permit effluent Emitations if the requirements of
paragraph b. of this condition are met. No determination made during administrative review of claims that
(3) The Permit Issuing Authority’ may approve an anticipated bypass, after considering its adverse effects, if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(1) of this section.
Bypassing of Treatment Facilities
Bypass not exceeding limitations [40 CFR 122.41 (m) (2)]
The Permittee may allow any bypass to occur which does not
only if it also is for essential maintenance to assure efficient operation. These byp:
provisions of Paragraphs b. and c. of this section.
b. Within 120 calendar days of:
> Receiving notification of a change in the classification of the system requiring the designation of a
new ORC and back-up ORC
A vacancy in the position of ORC
Proper Operation and Maintenance
The Permittee shall at all times provide the operation and maintenance resources necessary to operate the existing
facilities at optimum efficiency. The Permittee shall at all times properly operate and maintain all facilities and
systems of treatment and control (and related appurtenances) which arc installed or used by the Permittee to
achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate
laboratory’ controls and appropriate quality assurance procedures. This provision requires the Permittee to install
and operate backup or auxiliary facilities only' when necessary to achieve compliance with the conditions of the
permit [40 CFR 122.41 (e)].
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system-wide collection system
permit associated with the treatment facility.
Prohibition of By-pass
(1) Bypass from the treatment facility’ is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance; and
(C) The Permittee submitted notices as required under Paragraph b. of this section.
Need to Halt or Reduce not a Defense
It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit [40 CFR 122.41
(c)].
unanticipated bypass as required in Part
Section D. Monitoring and Records
1.
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NC DENR / Division of Water Quality / Water Quality Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
d. Burden of proof [40 CFR 122.41 (n) (4)]: The Permittee seeking to establish the occurrence of an
upset has the burden of proof in any enforcement proceeding.
Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of the volume and nature of
the permitted discharge. Samples collected at a frequency less than daily shall be taken on a day and time that is
characteristic of the discharge over the entire period the sample represents. All samples shall be taken at the
monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted
by any other wastestream, body of water, or substance. Monitoring points shall not be changed without
notification to and the approval of the Permit Issuing Authority [40 CFR 122.41 (j)J.
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noncompliance was caused by upset, and before an action for noncompliance, is final administrative action
subject to judicial review.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 2H.0124 -
Reliability) to prevent the discharge of untreated or madequately treated wastes during electrical power failures
either by means of alternate power sources, standby generators or retention of inadequately treated effluent.
2. Reporting
Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a
monthly Discharge Monitoring Report (DMR) Form (MR 1, 1.1, 2, 3) or alternative forms approved by the
Director, postmarked no later than the 28th day following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new
facility, on the last day of the month following the commencement of discharge. Duplicate signed copies of
these, and all other reports required herein, shall be submitted to the following address:
b. Conditions necessary for a demonstrauon of upset: A Permittee who wishes to establish the
affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or
other relevant evidence that:
(1) An upset occurred and that the Permittee can identify the cause(s) of the upset;
(2) The Permittee facility was at the time being properly operated; and
(3) The Permittee submitted notice of the upset as required in Part II. E. 6. (b) (B) of this permit.
(4) The Permittee complied with any remedial measures required under Part II. B. 2. of this permit.
6. Removed Substances
Solids, sludges, tilter backwash, or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCOS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States. The Permittee
shall comply with all existing Federal regulations governing the disposal of sewage sludge. Upon promulgation of
40 CFR Part 503, any permit issued by the Permit Issuing Authority for the utilization/disposal of sludge may be
reopened and modified, or revoked and reissued, to incorporate applicable requirements at 40 CFR 503. The
Permittee shall comply with applicable 40 CFR 503 Standards for the Use and Disposal of Sewage Sludge (when
promulgated) within the time provided in the regulation, even if the permit is not modified to incorporate the
requirement. The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
3.
4.
6.
7.
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>
>
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Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The
devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability’ of that type of device.
The Director shall approve the flow measurement device and monitoring location prior to installation.
Recording Results
For each measurement or sample taken pursuant to the requirements of this permit, the Permittee shall record
the following information [40 CFR 122.41]:
lo meet the intent of the monitoring required by this permit, all test procedures must produce minimum
detection and reporting levels that are below the permit discharge requirements and all data generated must be
reported down to the minimum detection or lower reporting level of the procedure. If no approved methods are
determined capable of achieving minimum detection and reporting levels below permit discharge requirements,
then the most sensitive (method with the lowest possible detection and reporting level) approved method must
be used.
5. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any
monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by
a fine of not more than 510,000 per violation, or by imprisonment for not more than two years per violation, or
by both. If a conviction of a person is for a violation committed after a first conviction of such person under this
paragraph, punishment is a fine of not more than 520,000 per day of violation, or by imprisonment of not more
than 4 years, or both [40 CFR 122.41].
Once-through condenser cooling water flow monitored by pump logs, or pump hour meters as specified in Part I
of this permit and based on the manufacturer's pump curves shall not be subject to this requirement.
Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations (published pursuant to
NCGS 143-215.63 et. seq.), the Water and Air Quality Reporting Acts, and to regulations published pursuant to
Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act (as Amended), and 40 CFR 136; or in
the case of sludge use or disposal, approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless
other test procedures have been specified in this permit [40 CFR 122.41],
Records Retention
Except for records of monitoring information required by this permit related to the Permittee’s sewage sludge
use and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40
CFR 503), the Permittee shall retain records of all monitoring information, including:
all calibration and maintenance records
all original strip chart recordings for continuous monitoring instrumentation
copies of all reports required by this permit
copies of all data used to complete the application for this permit
These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time [40 CFR
122.41].
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
a.
b.
Section E Reporting Requirements
1.
2.
permitted facility may meet one of the criteria for new sources at 40 CFRa.
b.
c.
3.
4.
5.
a.
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Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit [40 CFR 122.41 (1) (4)].
The analytical techniques or methods used; and
The results of such analyses.
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e.
f.
Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge
of any pollutant identified in this permit more frequendy than or at a level in excess of that authorized shall
constitute a violation of the permit.
Enter upon the Permittee's premises where a regulated facility or activity is located or conducted, or where
records must be kept under the conditions of this permit;
Have access to and copy, at reasonable times, any records that must be kept under the conditions of this
permit;
Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices,
or operations regulated or required under this permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise
authorized by the Clean Water Act, any substances or parameters at any location [40 CFR 122.41 (i)].
Transfers
This permit is not transferable to any person except after notice to the Director. The Director may require
modification or revocation and reissuance of the permit to document the change of ownership. Any such action
may incorporate other requirements as may be necessary under the Clean Water Act [40 CFR 122.41 (1) (3)].
8. Inspection and Entry
The Permittee shall allow the Director, or an authorized representative (including an authorized contractor acting
as a representative of the Director), upon the presentation of credentials and other documents as may be required
by law, to;
The alteration or addition to a
122.29 (b);or
1 he alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged. This notification applies to pollutants subject neither to effluent limitations in the permit, nor to
notification requirements under 40 CFR 122.42 (a) (1).
The alteration or addition results in a significant change in the Permittee’s sludge use or disposal practices,
and such alternation, addition or change may justify the application of permit conditions that are different
from or absent in the existing permit, including notification of additional use or disposal sites not reported
during the permit application process or not reported pursuant to an approved land application plan.
Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or
additions to the permitted facility [40 CFR 122.41 (1)]. Notice is required only when:
Anticipated Noncompliance
T he Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in noncompliance with the permit [40 CFR 122.41 (1) (2)].
Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II. D. 2) or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequendy than required by this permit, the results of such
monitoring shall be included in the calculation and reporting of the data submitted on the DMR.
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6.
b.
c.
7.
8.
9.
a.
b.
c.
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The Director may waive the written report
report has been received within 24 hours.
Twenty-four f lour Reporting
a.
on a case-by-case basis for reports under this section if the oral
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33
USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices
of the Division of Water Quality. As required by the Act, effluent data shall not be considered confidential.
Knowingly making any false statement on any such report may result in the imposition of criminal penalties as
provided for in NCGS 143-215.1 (b)(2) or in Section 309 of the Federal Act.
Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application, or
submitted incorrect information in a permit application or in any report to the Director, it shall promptly submit
such facts or information [40 CFR 122.41 (1) (8)].
Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge
digester; the known passage of a slug of hazardous substance through the facility; or any other unusual
circumstances.
Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc.
Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to receiving
waters without treatment of all or any portion of the influent to such station or facility.
11. Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement, representation, or
certification in any record or other document submitted or required to be maintained under this permit, including
monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of
Occurrences outside normal business hours may also be reported to the Division’s Emergency Response
personnel at [phone], [phone] or [phone].
Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the
Division as soon as possible, but in no case more than 24 hours or on the next working day following the
occurrence or first knowledge of the occurrence of any of the following:
Other Noncompliance
The Permittee shall report all instances of noncompliance not reported under Part II. E. 5 and 6. of this permit at
the time monitoring reports are submitted. The reports shall contain the information listed in Part II. E. 6. of
this permit [40 CFR 122.41 (1) (7)].
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence.
The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment. Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances. The written
submission shall contain a description of the noncompliance, and its cause; the period of noncompliance,
including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is
expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the
noncomphance [40 CFR 122.41 (1) (6)].
a.
b.
Version 6/20/2003
PART III
OTHER REQUIREMENTS
That any activity has occurred or will occur which would result in any discharge, on a non-routine or
infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the
highest of the following "notification levels";
(1) Five hundred micrograms per liter (500 pg/L);
(2) One milligram per liter (1 mg/L) for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
pursue the most environmentally sound
Section E. Facility Closure Requirements
The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system
covered by this permit. The Division may require specific measures during deactivation of the system to prevent
per liter (500 pg/L) for 2.4-dinitrophenol and for 2-methyl-4.6-dinitrophenol; and
(1 mg/L) for antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
Section A. Construction
The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment
capacity, nor change the treatment process(es) utilized at the treatment plant unless the Division has issued an
Authorization to Construct (AtC) permit. Issuance of an AtC will not occur until Final Plans and Specifications for
the proposed construction have been submitted by the Permittee and approved by the Division.
12. Annual Performance Reports
Permittees who own or operate facilities that collect or treat municipal or domestic waste shall provide an annual
report to the Permit Issuing Authority and to the users/customers served by the Permittee (NCOS 143-215.1C).
The report shall summarize the performance of the collection or treatment system, as well as the extent to which
the facility was compliant with applicable Federal or State laws, regulations and rules pertaining to water quality.
The report shall be provided no later than sixty days after the end of the calendar or fiscal year, depending upon
which annual period is used for evaluation.
k NPDES Permit Requirements
■ Page 12 of 16
than two years per violation, or by both
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe (40 CFR 122.42):
Section D. Evaluation of Wastewater Discharge Alternatives
The Permittee shall evaluate all wastewater disposal alternatives and pi
alternative of the reasonably cost effective alternatives. If the facility is in substantial non-compliance with the terms
and conditions of the NPDES permit or governing rules, regulations or laws, the Permittee shall submit a report in
such form and detail as required by the Division evaluating these alternatives and a plan of action within 60 days of
notification by the Division.
That any activity has occurred or will occur which would result in the discharge, on a routine or frequent
basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the
following "notification levels";
(1) One hundred micrograms per liter (100 pg/L);
(2) Two hundred micrograms per liter (200 pg/L) for acrolein and acrylonitrile; five hundred micrograms
per liter (500 gg/L) for 2.4-dinitrophenol and for 2-methyl-4.6-dinitrophenol; and one milligram per liter
Section B. Groundw ater Monitoring
The Permittee shall, upon written notice from the Director of the Division of Water Quality, conduct groundwater
monitoring as may be required to determine the compliance of this NPDES permitted facility with the current
groundwater standards.
not more than $25,000 per violation, or by imprisonment for not more
[40 CFR 122.41].
Section A. Publicly Owned Treatment Works (POTWs)
1.
2.
3.
Section B. Municipal Control of Pollutants from Industrial Users.
1.
2.
a.
b.
c.
d.
e.
f.
g-
h.
3.
4.
Version 6/20/2003
PART IV
SPECIAL CONDITIONS FOR MUNCIPAL FACILITIES
or fumes within the POTW in a
The Permittee shall require any industrial discharges sending influent to the permitted system to meet
Federal Pretreatment Standards promulgated in response to Section 307(b) of the Act. Prior to accepting
wastewater from any significant industrial user, the Permittee shall either develop and submit to the
With regard to the effluent requirements listed in Part I of this permit, it may be necessary for the
Permittee to supplement the requirements of the Federal Pretreatment Standards (40 CFR, Part 403) to
ensure compliance by the Permittee with all applicable effluent limitations. Such actions by the Permittee
may be necessary regarding some or all of the industries discharging to the municipal system.
NPDES Permit Requirement.
Page 13 of 16
adverse impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit
continue at the permitted facility.
Effluent limitations are listed in Part I of this permit. Other pollutants attributable to inputs from
industries using the municipal system may be present in the Permittee's discharge. At such time as
sufficient information becomes available to establish limitations for such pollutants, this permit may be
revised to specify effluent limitations for any or all of such other pollutants in accordance with best
practicable technology or water quality standards.
All POTWs must provide adequate notice to the Director of the following:
Any new introduction of pollutants into the POTW from an indirect discharger which would be subject to
section 301 or 306 of CWA if it were directly discharging those pollutants; and
Any substantial change in the volume or character of pollutants being introduced by an indirect discharger
as influent to that POTW at the time of issuance of the permit.
For purposes of this paragraph, adequate notice shall include information on (1) the quality and quantity of
effluent introduced into the POTW, and (2) any anticipated impact of the change on the quantity or quality
of effluent to be discharged from the POTW.
Under no circumstances shall the Permittee allow introduction of the following wastes in the waste
treatment system:
Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees
Centigrade using the test methods specified in 40 CFR 261.21;
Pollutants which will cause corrosive structural damage to the POTW, but in no case Discharges
with pH lower than 5.0, unless the works is specifically designed to accommodate such Discharges;
Solid or viscous pollutants in amounts which will cause obstruction to the flow in the POTW
resulting in Interference;
Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a Discharge at a flow
rate and/or pollutant concentration which will cause Interference with the POTW;
Heat in amounts which will inhibit biological activity in the POTW resulting in Interference, but in
no case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C
(104°F) unless the Division, upon request of the POTW, approves alternate temperature limits;
Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will
cause interference or pass through;
Pollutants which result in the presence of toxic gases, vapors,
quantity that may cause acute worker health and safety problems;
Any trucked or hauled pollutants, except at discharge points designated by the POTW.
5.
Section C. Pretreatment Programs
1.
2.
3.
4.
5.
Version 6/20/2003
NPDES Permit Requirements
Page 14 of 16
existing
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8) of the Clean
Water Act, the Federal Pretreatment Regulations 40 CFR Part 403, the State Pretreatment Regulations 15A
NCAC 2H .0900, and the legal authorities, policies, procedures, and financial provisions .contained in its
pretreatment program submission and Division approved modifications there of. Such operation shall include
but is not limited to the implementation of the following conditions and requirements:
Sewer Use Ordinance (SUO)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program.
Industrial Waste Survey (IWS)
The Permittee shall update its Industrial Waste Survey (IWS) to include all users of the sewer collection
system at least once every five years.
Under authority of sections 307(b) and (c) and 402(b)(8) of the Clean Water Act and implementing regulations 40
CFR Part 403, North Carolina General Statute 143-215.3 (14) and implementing regulations 15A NCAC 2H
.0900, and in accordance with the approved pretreatment program, all provisions and regulations contained and
referenced in the Pretreatment Program Submittal are an enforceable part of this permit.
or modify an
This permit shall be modified, or alternatively, revoked and reissued, to incorporate or modify an approved
POTW Pretreatment Program or to include a compliance schedule for the development of a POTW
Pretreatment Program as required under Section 402(b)(8) of the Clean Water Act and implementing
regulations or by the requirements of the approved State pretreatment program, as appropriate.
Division a Pretreatment Program for approval per 15A NCAC 2H .0907(a)
Pretreatment Program per I5A NCAC 2H .0907(b).
Industrial User Pretreatment Permits (IUP) & Allocation Tables
In accordance with NCGS 143-215.1, the Permittee shall issue to all significant industrial users, permits for
operation of pretreatment equipment and discharge to the Permittee's treatment works. These permits
shall contain limitations, sampling protocols, reporting requirements, appropriate standard and special
conditions, and compliance schedules as necessary for the installation of treatment and control
technologies to assure that their wastewater discharge will meet all applicable pretreatment standards and
requirements. The Permittee shall maintain a current Allocation Table (AT) which summarizes the results
of the Headworks Analysis (HWA) and the limits from all Industrial User Pretreatment Permits (TUP).
Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined by the HWA.
Monitoring Plan
The Permittee shall implement a Division approved Monitoring Plan for the collection of facility specific
data to be used in a wastewater treatment plant Headworks Analysis (HWA) for the development of
specific pretreatment local limits. Effluent data from the Plan shall be reported on the DMRs (as required
by Part II, Section D, and Section E.5.).
Headworks Analysis (HWA) and Local Limits
The Permittee shall obtain Division approval of a Headworks Analysis (HWA) at least once every five
years, and as required by the Division. Within 180 days of the effective date of this permit (or any
subsequent permit modification) the Permittee shall submit to the Division a written technical evaluation
of the need to revise local limits (i.e., an updated HWA or documentation of why one is not needed) [40
CFR 122.42]. The Permittee shall develop, in accordance with 40 CFR 403.5(c) and 15A NCAC 2H .0909,
specific Local Limits to implement the prohibitions listed in 40 CFR 403.5(a) and (b) and 15A NCAC 2H
.0909.
6.
7.
SIU Self Monitoring and Reporting8.
9.
10.
a.)
b.)
c-)
d.)
Version 6/20/2003
1
NPDES Permit Requirements
Page 15 of 16
Pre treatment Annual Reports (PAR)
The Permittee shall report to the Division in accordance with 15A NCAC 2H .0908. In lieu of submitting
annual reports. Modified Pretreatment Programs developed under 15A NCAC 2H .0904 (b) may be
required to meet with Division personnel periodically to discuss enforcement of pretreatment requirements
and other pretreatment implementation issues.
These reports shall be submitted according to a schedule established by the Director and shall contain the
following:
POTW Inspection & Monitoring of their SIUs
The Permittee shall conduct inspection, surveillance, and monitoring activities as described in its Division
approved pretreatment program in order to determine, independent of information supplied by industrial
users, compliance with applicable pretreatment standards. The Permittee must:
a.
b.
The Permittee shall require all industrial users to comply with the applicable monitoring and reporting
requirements outlined in the Division approved pretreatment program, the industry's pretreatment permit,
or in 15ANCAC 2H .0908.
Inspect all Significant Industrial Users (SIUs) at least once per calendar year; and
Sample all Significant Industrial Users (SIUs) at least twice per calendar year for all permit­
limited pollutants, once during the period from January 1 through June 30 and once during the
period from July 1 through December 31, except for organic compounds which shall be sampled
once per calendar year;
For all other active pretreatment programs, the Permittee shall submit two copies of a Pretreatment Annual
Report (PAR) describing its pretreatment activities over the previous twelve months to the Division at the
following address:
Enforcement Response Plan (ERP)
The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(b) and (c) of the Clean Water Act (40 CFR 405 et. seq.), prohibitive
discharge standards as set forth in 40 CFR 403.5 and 15A NCAC 2H .0909, and specific local limitations.
All enforcement actions shall be consistent with the Enforcement Response Plan (ERP) approved by the
Division.
NC DENR / DWQ / Pretreatment Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Authorization to Construct (A to C)
The Permittee shall ensure that an Authorization to Construct permit (AtC) is issued to all applicable
industrial users for the construction or modification of any pretreatment facility. Prior to the issuance of
an AtC, the proposed pretreatment facility and treatment process must be evaluated for its capacity to
comply with all Industrial User Pretreatment Permit (IUP) limitations.
Narrative
A brief discussion of reasons for, status of, and actions taken for all Significant Industrial
Users (SIUs) in Significant Non-Compliance (SNC);
Pretreatment Program Summary (PPS)
A pretreatment program summan’ (PPS) on specific forms approved by the Division;
Significant Non-Compliance Report (SNCR)
The nature of the violations and the actions taken or proposed to correct the violations on
specific forms approved by the Division;
Industrial Data Summary Forms (IDSF)
e.)
11.
12.
13.
14.
Version 6/20/2003
Funding and Financial Report
The Permittee shall maintain adequate funding and staffing levels to accomplish the objectives of its
approved pretreatment program.
Modification to Pretreatment Programs
Modifications to the approved pretreatment program including but not Emited to local Emits
modifications, POT\V monitoring of their Significant Industrial Users (SIUs), and Monitoring Plan
modifications, shall be considered a permit modification and shaU be governed by 15 NCAC 2H .0114 and
15A NCAC2H .0907.
Record Keeping
The Permittee shall retain for a minimum of three years records of monitoring activities and results, along
with support information including general records, water quaEty records, and records of industrial impact
on the POTW.
NPDES Permit Requirements
Monitoring data from samples collected by both the POTW and the Significant Industrial
User (SIU). These analytical results must be reported on Industrial Data Summary Forms
(IDSF) or other specific format approved by the Division;
Other Information
Copies of the POTWs allocation table, new or modified enforcement compEance schedules,
pubhc notice of SIUs in SNC, and any other information, upon request, which in the
opinion of the Director is needed to determine compEance with the pretreatment
implementation requirements of this permit;
PubEc Notice
The Permittee shaU pubEsh annually a Est of Significant Industrial Users (SIUs) that were in Significant
Non-CompEance (SNC) as defined in the Permittee's Division approved Sewer Use Ordinance with
appEcable pretreatment requirements and standards during the previous twelve month period. This Est
shall be pubhshed within four months of the appEcable twelve-month period.
July 30, 2003
Dear Mr. Brice:
Reporting requirements for nitrogen have been updated.
Condition A.(6.) regarding compliance with the fecal coliform limit, has again been inserted into the pennit
L
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Mr. Russell Brice, WWMF Manager
City of Wilson
P.O. Box 10
Wilson. North Carolina 27894-0010
Attached to this letter is the draft NPDES permit for the City of Wilson's Hominy Creek Wastewater
Management Facility (WWMF) renewal. NPDES Permit No. NC0023906. The permit is renewed with the
previously approved and phased expansion limits and reference to the wastewater reuse permit. The following
changes have been made during this renewal cycle and are reflected in this draft:
Condition A.(5.) regarding the effective date for more stringent NH3-N limits has again been inserted into the
permit. As was agreed upon during the adjudicatory settlement of the previous permit, the more stringent
NH3-N limits shall become effective July 1. 2004.
Reasonable potential to exceed the acute criteria for copper and zinc still exists. Monitoring is still
recommended on a monthly frequency.
In order to have complete inionnation for the next pennit renewal, the pollutant scan has been added to the
permit |ref. Condition A.(7.)].
1617 Mail Service Center, Raleigh, North Carolina 2 7699-161 7 - Telephone [phone]/FAX [phone]
An Equal Opportunity Affirmative Action Employer - 50% recycled/ 1 0% post-consumer paper
Visit us on the web at http //h2o.enr.state.nc.us/NPDES
Based on adverse comments from EPA, the Division of Water Quality was required to implement a policy to
adopt weekly average NH3-N (ammonia) limits for municipalities, as required by the Code of Federal
Regulations. This implementation policy was adopted October 15, 2002. The weekly average values are three
times the monthly average values (this value was established based on a review of treatment capability at
various municipal plants). This permit includes both monthly average and weekly average limits for NH3-N
for the existing flow.
Based on a statistical analysis (reasonable potential analysis - RPA) of the existing data, the Division has
determined that no reasonable potential to exceed the water quality standards or an acute criterion exists for
cadmium, chromium, mercury, and silver. However, the WWMF will still be required to perform monitoring
via the pretreatment Long Term Monitoring Plan.
NCDENR
North Carolina Department of
Environment and Natural Resources
Subject: NPDES Draft Permit
Wilson Hominy Creek WWMF
Permit No. NC0023906
Wilson County
F 5
cc:
Mr. Brice
NC0023906
2
Raleigh Regional Office/Water Quality Section
NPDES Unit
ERA Region IV, Roosevelt Childress
Sincerely,
/£&/6avid A. Goodrich, Supervisor
XlZ NPDES Unit
Please review these documents very carefully to ensure a thorough understanding of the information,
conditions, and requirements contained therein. Once a permit is issued, except for typographical or technical
errors, the pennit may be appealed only through the legal process.
Any comments regarding the draft permit should be submitted no later than September 2, 2003. If
you have any questions regarding the draft NPDES permit, please contact Susan Wilson at (919) 733 - 5083,
extension 510.
Permit No. NC0023906
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
is hereby authorized to discharge wastewater from a facility located at
to receiving waters designated as Contentnea Creek in the Neuse River Basin
This permit shall become effective
City of Wilson
Hominy Creek Wastewater Management Facility
Alan W. Klimek, P.E., Director
Division of Water Quality
By the Authority of the Environmental Management Commission
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Water Quality Commission, and the
Federal Water Pollution Control Act, as amended.
in accordance with the discharge limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
Wilson - Hominy Creek WWMF
Old Stantonsburg Road
Wilson
Wilson County
Wilson/ Hominy Creek WWTP
NPDES No. NC0023906
This permit and the authorization to discharge shall expire at midnight on May 31, 2008.
September 28, 2001.DRAFT
Permit No. NC0023906
SUPPLEMENT TO PERMIT COVER SHEET
is hereby authorized to:
1.
2.
3.
r' >■:
Discharge wastewater from said treatment works at the location specified on the
attached map into Contentnea Creek which is classified C Sw-NSW waters in Neuse
River Basin.
City of Wilson
Hominy Creek Wastewater Management Facility
Continue to operate a water reclamation and distribution system to provide beneficial
reuse for treated effluent from the treatment plant, as approved pursuant to Permit No.
WQ0020915.
Continue to operate an existing 14 MOD wastewater treatment facility consisting of
mechanical bar screens, manual bar screen, grit chamber, preaeration, primary
clarifiers, biological nutrient removal, extended aeration basins, secondary clarifiers,
polishing ponds, tertiary filters, methanol feed system, chlorination and
dechlorination, post aeration, and anaerobic digesters located at Hominy Creek
WWMF, Old Stantonsburg Road, Wilson, Wilson County, and
All previous NPDES Permits issued to this facility, whether for operation or discharge, are
hereby revoked. [The exclusive authority to operate this facility arises under this pennit. The
authority to operate the facility under previously issued permits bearing this number is no
longer effective.] The conditions, requirements, terms and provisions of this permit
authorizing discharge under the NPDES govern discharges from this facility.
r
I
1NC0030716
SCALE 1:24000North
L
Facility
Location
City of Wilson
Hominy Creek WWTP
Quad: E27NW
Latitude: 35°40’37”
Longitude: 77°54’51”
Stream Class: C-Swamp NSW
Subbasin: 30407
Receiving Stream: Contentnea Creek
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A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
Effluent Characteristics
Sample Type
RecordingFlow
Composite5.0 mg/l 7.5 mg/l Daily
CompositeDaily10.0 mg/l 15.0 mg/l
CompositeDaily30.0 mg/l 45.0 mg/l
CompositeDaily2.0 mg/l 6.0 mg/l3
Composite Effluent12.0 mg/l Daily4.0 mg/l3
1.0 mg/l Daily Composite Effluent3.0 mg/l3
Effluent6.0 mg/l Daily Composite2.0 mg/l3
200/100 ml 400/100 ml
Grab18pg/l
TN Load8
6-9
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge up to 14 MOD of municipal wastewater from outfall 001.
Such discharges shall be limited and monitored by the Permittee as specified below:
Weekly
Average
Daily
Maximum
NH3asN [April 1-October31]
[Through June 30, 2004]
NH3 as N [Nov. 1 - March 31]
[Through June 30, 2004]
NHa as N [April 1 - October 31]
[Beginning July 2004]
NHs as N [Nov. 1 - March 31]
[Beginning July 2004]
Dissolved Oxygen4______
Dissolved Oxygen
Conductivity
Conductivity
Monitoring Requirements
Measurement
Frequency
Continuous
Quarterly
Monthly
Monthly
Daily
Daily
Weekly
Weekly
Weekly
Monthly
Monthly
Annually
Weekly
Daily
3/Week
Daily
3/Week
Daily
3/Week
Composite
Composite
Composite
Calculated
Calculated
Calculated
Composite
Grab
Grab
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Effluent
Upstream &
Downstream
Effluent
Upstream &
Downstream
Effluent
Sample
Location1
Influent or
Effluent
Influent &
Effluent
Influent &
Effluent
Influent &
Effluent
Effluent
Effluent
Effluent
Upstream &
Downstream
Effluent
Upstream &
Downstream
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Chronic Toxicity11
Copper________
Zinc__________
pH12
Limits
Monthly
Average
14MGD
Daily
3/Week
Total Residual Chlorine6
TKN (mg/l)
NO2-N + NO3-N (mg/l)
TN (mg/l)7__________
Total Monthly Flow (MG)
BOD, 5 day (209C)2
[April 1 - October 31]
BOD, 5 day (209C)2
[November 1 - March 31]
Total Suspended Residue2
Fecal Coliform (geometric mn) 5
Fecal Coliform (geometric mean)
Monitor & Report
Monitor & Report
Monitor & Report
Monitor & Report
Monitor & Report
157,684 Ib/year (Annual Mass Loading)9
2.0 mg/L (Quarterly Average)Total Phosphorus 10
Temperature (9C)
Temperature (9C)
r.
Footnotes:
1.
2.
3.
The daily average dissolved oxygen effluent concentration shall not be less than 7.0 mg/1.4.
Refer to Condition A. (6) regarding fecal coliform limits.5.
6.
7.
8.
9.
12. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge offloating solids or visible foam in other than trace amounts.
v|‘!'
See Condition A.(5) regarding phased NH3-N limits. More stringent NH3-N limits shall become
effective July 1, 2004.
10. The quarterly average for total phosphorus shall be the average of composite samples collected
weekly during the calendar quarter (January-March, April-June, July-September, October-
December) .
11. Chronic Toxicity (Ceriodaphnia dubia) P/F at 90%: February, May, August, and November [see
Special Condition A.(4)1. Toxicity monitoring shall coincide with metals monitoring.
Sample locations: Upstream at Old Blackcreek Road and downstream at NC Highway 222.
Stream samples shall be grab samples and shall be collected 3/Week during June - September
and 1/Week during the remaining months of the year. Instream monitoring is provisionally
waived in light of the permittee’s participation in the Lower Neuse Basin Association.
Instream monitoring shall be conducted as stated in this permit should the permittee
end its participation in the Association.
The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not
exceed 15% of the respective influent value (85% removal).
Total residual chlorine monitoring is required only if chlorine or a chlorinated compound is
used as a disinfectant (or elsewhere in the process).
TN means Total Nitrogen. For a given wastewater sample, TN is the sum of Total Kjeldahl
Nitrogen and Nitrate-Nitrite Nitrogen: TN = TKN + NO2-N + NO3-N.
TN Load is the mass load of TN discharged by the Permittee in a period of time. Mass loadings
for Outfalls 001 and 002 shall be monitored and calculated as prescribed in Condition A.(2.),
and the combined annual mass loadings of the two outfalls shall not exceed the specified TN
limit. See Special Condition A. (2.), Calculation of TN Loads.
The annual TN Load limit shall become effective with the calendar year beginning on January
1, 2003. Compliance with this limits shall be determined in accordance with Special Condition
A.(3.), Annual Limits for Total Nitrogen.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
(Continued)
i’ f KI /
a.
TMF
8.34
a.
b.
i.
c.
i.
ii. Annual TN Load (Ib/yr) = Sum of the 12 Monthly TN Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen results (mg/L and Ib/mo) in the discharge
monitoring report for that month and shall report each year’s annual results (Ib/yr) in the
December report for that year.
Hv liu
n-.s
A.(2.) CALCULATION OF TOTAL NITROGEN LOADS
The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load (Ib/mo) = TN x TMF x 8.34
A.(3.) ANNUAL LIMITS FOR TOTAL NITROGEN
Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin are annual limits and are applied for the calendar year.
For any given calendar year, the Permittee shall be in compliance with the annual TN Load
limit in this Permit if:
the Permittee’s annual TN Load is less than or equal to said limit, or
ii. the Permittee is a Co-Permittee Member of a compliance association.
The TN Load limit in this Permit (if any) may be modified as the result of allowable changes
in the Permittee’s TN allocation.
Allowable changes include those resulting from purchase of TN allocation from the
Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation between the
Permittee and other dischargers; regionalization; and other transactions approved by the
Division.
ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
iii. Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
iv. Application shall be sent to:
NCDWQ / NPDES Unit
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh. NC 27699-1617
the average Total Nitrogen concentration (mg/L) of the
composite samples collected during the month
the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
conversion factor, from (mg/L x MG) to pounds
where:
TN
d.
i.
ii.
e.
A. (4.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The permit holder shall perform at a minimum, quarterlq monitoring using test procedures
outlined in the “North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,” Revised
February 1998, or subsequent versions or “North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure” (Revised-February 1998) or subsequent versions. The tests will be
performed during the months of February, May, August, and November. Effluent sampling for
this testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
The chronic value for multiple concentration tests will be determined using the geometric mean of
the highest concentration having no detectable impairment of reproduction or survival and the
lowest concentration that does have a detectable impairment of reproduction or survival. The
definition of “detectable impairment,” collection methods, exposure regimes, and further statistical
methods are specified in the “North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure” (Revised-February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,
DWQ Form AT-3 (original) is to be sent to the following address:
' ••• I
i lni’iiu1, f i ck W\\ .Ml
■!’! TS -- ( 'Juc
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90 %.
If the Permittee is a member and co-permittee of an approved compliance association, its TN
discharge during that year is governed by that association’s group NPDES permit and the TN
limits therein.
The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association’s group NPDES permit.
Association roster(s) and members’ TN allocations will be updated annually and in
accordance with state and federal program requirements.
iii. If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association’s NPDES permit.
(1) Upon receipt of timely and proper notification, the Division will modify the permit
as appropriate and in accordance with state and federal program requirements.
(2) Membership changes in a compliance association become effective on January 1
of the year following modification of the association’s permit.
The TN monitoring and reporting requirements in this Permit remain in effect until
expiration of this Permit and are not affected by the Permittee’s membership in a compliance
association.
If the test procedure performed as the first test of any single quarter results in a failure or
ChV below the permit limit, then multiple-concentration testing shall be performed at a
minimum, in each of the two following months as described in “North Carolina Phase II
Chronic Whole Effluent Toxicity Test Procedure” (Revised-February 1998) or subsequent
versions.
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
A. (4.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) (cont’d.)
A. (5.) Effective Date for More Stringent NH3-N Limits
A. (6.) Fecal Coliform Compliance Condition
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
The permittee agrees that it will not challenge the new limits when this permit is renewed so long
as such limits are generally applicable to major dischargers in the Neuse River Basin.
Based on the resolution of the permit adjudication, with agreed upon language submitted July 13,
2001, the limits of 2 mg/1 (April 1 - October 31) and 4 mg/1 (November 1 through March 31) shall
be in effect until July 1, 2004, at which time new limits of 1 mg/1 and 2 mg/1 shall become
effective.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring
is required, the permittee will complete the information located at the top of the aquatic toxicity
(AT) test form indicating the facility name, permit number, pipe number, county, and the
month/year of the report with the notation of “No Flow” in the comment area of the form. The
report shall be submitted to the Environmental Sciences Branch at the address cited above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re­
opened and modified to include alternate monitoring requirements or limits.
Test data shall be complete, accurate, include all supporting chemical/physical measurements
and all concentration/response data, and be certified by laboratory supervisor and ORC or
approved designate signature. Total residual chlorine of the effluent toxicity sample must be
measured and reported if chlorine is employed for disinfection of the waste stream.
Should the City of Wilson be deemed by the Division of Water Quality to be chronically
noncompliant with the weekly average and/or monthly average fecal coliform limit after
completion of the expansion to 14 MGD, the City shall submit plans and specifications within 90
days after notification by the Division. The plans and specifications shall provide for an
adequately designed chlorine disinfection facility. If another method of disinfection is proposed, it
should conform to conventional design parameters, as well as any minimum requirements
specified by the Division. Bidding and subsequent construction of the project shall commence
immediately after the issuance of the Authorization to Construct pennit.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate
environmental controls, shall constitute an invalid test and will require immediate follow-up
testing to be completed no later than the last day of the month following the month of the initial
monitoring.
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no
later than 30 days after the end of the reporting period for which the report is made.
F 1
2.
’'Mi'.
3.
4.
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Trans-1,2-dichloroethylene
1,1 -dichloroethylene
1.2- dichloropropane
1.3- dichloropropylene
Ethylbenzene
Methyl bromide
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-cliloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di n-octyl phthalate
Dibenzofa ,h)anthracene
1.2- dichlorobenzene
1.3- dichlorobenzene
1.4- dichlorobenzene
3.3- dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2.4- dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo pentadiene
Hexachloroethane
Indeno( 1,2.3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
A. (7.) EFFLUENT POLLUTANT SCAN
The permittee shall perform an annual pollutant scan of its treated effluent for the following
parameters:
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1.1 -dichloroethane
1,2-dichloroe thane
Methyl chloride
Methylene chloride
1.1.2.2- tetrachloroethane
Tetrachloroethylene
Toluene
1.1,1 -trichloroethane
1.1.2- trichloroe thane
Trichloroethylene
Vinyl chloride
Acid extractable compounds:
P-chloro-m-creso
2-chlorophenol
2.4 dichlorophenol
2.4- dimethylphenol
4.6- dinitro-o-cresol
2.4- dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophcnol
Phenol
2.4.6- trichlorophenol
Base neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Be nzo(a) pyr e ne
3.4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
1. The total set of samples analyzed during the current term of the permit must be representative
of seasonal variations.
Samples shall be collected and analyzed in accordance with analytical methods approved
under 40 CFR Part 136.
Unless indicated otherwise, metals must be analyzed and reported as total recoverable.
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved
by the Director, within 90 days of sampling. Two copies of the report shall be submitted along
with the DMRs to the following address: Division of Water Quality, Water Quality Section,
Central Files, 1617 Mail Service Center. Raleigh, North Carolina 27699-1617.