NC0023906_Permit

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November 12, 2008
NOV 2 0 2008
Dear Mr. Brice:
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[phone]
FAX [phone]
On the Internet at http://h2o.enr.state.nc.us/
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Supplement to Permit Cover sheet:
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Subject: NPDES Permit Issuance
Permit No. NC0023906
Hominy Creek WRF
Wilson County
Mr. Russell P. Brice, Water Reclamation Manager
City of Wilson
P.O. Box 10
Wilson, North Carolina 27894-0010
North Carolina Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Michael F. Easley, Governor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Coleen H. Sullins, Director
_____________________Division of Water Quality
The following procedure has been recently implemented by DWQ: Total residual
chlonne (TRC) compliance level changed to 50 ug/1. Effective March 1, 2008, the Division
received EPA approval to allow a 50 ug/1 TRC compliance level. This change is due to
analytical difficulties with TRC measurements. Facilities will still be required to report
actual results on their monthly discharge monitoring report (DMR) submittals, but for
compliance purposes, all TRC values below 50 ug/1 will be treated as zero.
The footnote regarding this change was omitted in the draft permit. It has been
added to the effluent limitations page in the final permit. It states “The Division shall
consider all effluent TRC values reported below 50 ug/1 to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certified laboratoiy (including field certified), even if these values fall
below 50 ug/1." The permit limit of 18 ug/1 for TRC remains in the permit, however if the
lab reports a value of less than 50 ug/1 for TRC, the WWTP will be compliant.
The following modifications have been added to the final permit:
* Eer recomipendation, these treatment components are now included on the
digester methane generating unit
reclaimed water facility
sludge thickening and dewatering facility
alkaline sludge stabilization facility
three liquid sludge holding tanks
sludge drying beds
Division personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge permit.
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 US
Environmental Protection Agency dated October 17, 2007 (or as subsequently amended.)
This permit authorizes the City of Wilson to discharge municipal wastewater from
the Hominy Creek - Water Reclamation Facility to Contentnea Creek, a class C Swamp
NSW water in the Neuse River Basin. The permit includes discharge limitations/or
monitoring for flow, BODS, ammonia nitrogen, total suspended solids, dissolved oxygen,
total residual chlorine, fecal coliform, cadmium, total nitrogen and total phosphorus, in’
addition to other constituents.
I
Page 2
Letter to Mr. Brice^^
Permit No. NC0023906
• Footnotes regarding instream monitoring have been added to the effluent page for
dissolved oxygen, fecal coliform, temperature and conductivity.
The following modifications made to the draft permit of August 13, 2008, remain in
the final permit:
• Quarterly monitoring for chloroform and dichlorobromomethane has been added to
the permit based on the analysis of submitted data.
• Please review the language in Special Condition A. 5. Chronic Toxicity Permit Limit
There are some minor additions regarding the DWQ forms to be submitted and
clarification on reporting pollutant data.
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
wntten request within thirty (30) days following receipt of this letter. This request must
be in the form of a wntten petition, conforming to Chapter 150B of the North Carolina
General Statutes, and filed with the office of Administrative Hearings, 6714 Mail Service
Cunneu’ 5ale^h’ 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. The Division may require
modification revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water
Quality or permits required by the Division of Land Resources, Coastal Area Management
Act, or any other Federal or Local governmental permits may be required.
• Effluent limits for cadmium have been added to the permit based on the results of
the reasonable potential analysis of submitted data. The analysis showed the
reasonable potential to exceed the chronic allowable concentration. There will be a
weekly average limit of 2 ug/1 and a daily average limit of 15 ug/1. After collecting
twelve months of data for cadmium, the City of Wilson can request, in writing,
that DWQ reevaluate the cadmium data and determine whether the limit is
still applicable.
• There have been some minor language changes in Special Condition A. (3)
regarding annual limits for total nitrogen.
* The addition of Special Condition A. (4). Total Nitrogen Allocations, which notes
clarification language on the nitrogen allocation and states the allocation amount
“assigned to, acquired by or transferred to” the Hominy Creek Water Reclamation
Facility.
Sincerely,
Page 3
Letter to Mr. Brice
Permit No. NC0023906
w
oleen H. Sullins
If you have any questions or need additional information, please contact Ms.
Jacquelyn Nowell at telephone number [phone] or email [e-mail].
Attachments
cc: EPA/Region
Raleigh Regional Office/Surface Water Protection Section
PERCS/ecopy
Ecosystems Unit/Attn. Jenny Atkins
NRCA/Cindy Finan
Aquatic Toxicology Unit
NPDES File
Central Files
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 December 1, 2008.
This permit and the authorization to discharge shall expire at midnight on May 31, 2013.
Signed this day November 12, 2008.
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
City of Wilson
Hominy Creek Water Reclamation Facility
Cdleen H. Sullins, Director
Division of Water Quality
By the Authority of the Environmental Management Commission
Wilson - Hominy Creek WRF
3100 Old Stantonsburg Road
Wilson
Wilson County
Wilson/ Hominy Creek WWTP
NPDESNo. NC0023906
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.
Permit No. NC0023906
SUPPLEMENT TO PERMIT COVER SHEET
is hereby authorized to:
1.
2.
3.
The facility is located at Hominy Creek Water Reclamation Facility, 3100 Old
Stantonsburg Road, Wilson, Wilson County, and
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 Water Reclamation Facility
Continue to operate an existing 14 MGD wastewater treatment facility consisting of:
• mechanical bar screens
• manual bar screen
• grit chamber
• two (2) preaeration basins (out of service)
• three (3) primary clarifiers
• one (1) biological nutrient removal tank
• seven (7) extended aeration basins
• five (5) secondary clarifiers
• polishing ponds
• five (5) tertiaiy filters
• methanol feed system
• sodium hypochorite disinfection tank
• sodium bisulfite dechlorination
• post aeration, and
• anaerobic digesters
• digester methane generating unit
• a reclaimed water facility
• sludge thickening and dewatering facility
• alkaline sludge stabilization facility
• three (3) liquid sludge holding tanks and
• sludge drying beds
City of Wilson
Hominy Creek WWMF
NPDES No. NC0023906
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.
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 permit. 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.
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City of Wilson
Hominy Creek WWMF
NC0023906
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Sub-Basin: 03-04-07
77°54’ 51”
E27NW, Wilson
Stream Class: C-Swamp NSW •
Receiving Stream: Contentnea Creek, Neuse River Basin
Permitted Flow: 14 MGD
Longitude:
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A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS-FINAL
Effluent Characteristics
Sample Type
Flow Recording
Total Monthly Flow (MG)Monitor & Report Monthly
5.0 mg/l 7.5 mg/l Daily
10.0 mg/l 15.0 mg/l Daily Composite
30.0 mg/l 45.0 mg/l CompositeDaily
200/100 ml 400/100 ml
Grab18pg/l
TN Load7
2 pg/l 15 pg/l
6.0-9.0
During the period beginning on the effective date of the permit 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:
Monthly
Average
14 MGD
Daily
Maximum
Ciry of Wilson
Hommy Creek WWMF
NPDES No. NC0023906
NHa as N [April 1 - October 31]
NHa as N [Nov. 1 - March 31]
Dissolved Oxygen^________
Dissolved Oxygen1
Total Residual Chlorine5
TKN (mg/l)
NO2-N + NO3-N (mg/l)
TN (mg/l)6
Monitor & Report
Monitor & Report
Monitor & Report
Monitor & Report
157,684 Ib/year (Annual Mass Loading)8
2.0 mg/L (Quarterly Average)
1.0 mg/l
2.0 mg/l
3.0 mg/l
6.0 mg/l
Monitoring Requirements
Measurement
Frequency
Continuous
Daily
Weekly
Weekly
Weekly
Monthly
Annually
Weekly
Daily
3/Week
Daily
Daily
Daily
3/Week
Daily
3/Week
Recorded or
Calculated
Composite
Composite
Composite
Grab
Grab
Composite
Composite
Composite
Calculated
Calculated
Composite
Grab
Grab
Composite
Composite
Composite
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Grab
Sample
Location1
Influent or
Effluent
Influent or
Effluent
Influent &
Effluent
Influent &
Effluent
Influent &
Effluent
Effluent
Effluent
Effluent
Upstream &
Downstream
Effluent
Upstream &
Downstream
Effluent
Effluent
Effluent
Upstream &
Downstream
Effluent
Upstream &
Downstream
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
BOD, 5 day (20eC)2
[April 1 - October 31]
BOD, 5 day (20QC)2
[November 1 - March 31]
Total Suspended Solids2
Conductivity
Conductivity1
Quarterly
Weekly
Monthly
Monthly
Quarterly
Quarterly
Daily
Daily
3AA/eek
Chronic Toxicity 1Q
Total Cadmium_____
Total Copper______
Total Zinc_________
Chloroform________
Dichlorobromomethane
pH11
Limits
Weekly
Average
Fecal Coliform (geometric mn)4
Fecal Coliform (geometric mn)1
Total Phosphorus8
Temperature (9C)
Temperature (9C)1
Footnotes:
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.
6.
11. The pH shall not be less than 6.0 standard units or greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
For a given wastewater sample, TN = TKN + NO?-N + NCh-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NOa-N and NOz-N are Nitrate and Nitrite Nitrogen, respectively.
2. The monthly average effluent BODS and Total Suspended Solids concentrations shall not
exceed 15% of the respective influent value (85% removal).
1. Sample locations: Upstream at Old Black Creek 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.
Chy of Wilson
Hominy Creek WWMF
NPDES No. NC0023906
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
(Continued)
8. Compliance with this limit shall be determined in accordance with Special Condition A.(3.) of this
permit. Annual Limits for Total Nitrogen.
5. The Division shall consider all effluent TRC values reported below 50 ug/1 to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values
reported by a North Carolina certified laboratory (including field certified), even if these values
fall below 50 ug/1.
7. TN Load is the mass quantity of Total Nitrogen discharged in a given period of time. See
Special Condition A.(2.), Calculation of TN Loads.
9. The quarterly average for total phosphorus shall be the average of composite samples collected
weekly during each calendar quarter (January-March, April-June, July-September, October-
December).
10. Chronic Toxicity (Ceriodaphnia dubid) P/F at 90%: February, May, August, and November [see
Special Condition A.(5)]. Toxicity monitoring shall coincide with metals monitoring.
a.
TMF
8.34
a.
b.
c.
i.
d.
i.
City of Wilson
Hominy Creek WWMF
NPDES No. NC0023906
A. (2.) CALCULATION OF TOTAL NITROGEN LOADS
The Permittee shall calculate monthly and annual TN Loads as follows:
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
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 Programs
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
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.
ii. Association roster(s) and members' TN allocations will be updated annually and in
accordance with state and federal program requirements.
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
appropriate discharge monitoring report for each month and shall report each year's results
(lb/yr) with the December report for that year.
Monthly TN Load (Ib/mo) = TN x TMF x 8.34
where:
TN
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:
i. 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
A. (3.) ANNUAL LIMITS FOR TOTAL NITROGEN (continued)
e.
A. (4.) TOTAL NITROGEN ALLOCATIONS
ALLOCATION AMOUNT (1)
SOURCE DATE STATUS
Estuary (Ib/yr)Discharge (Ib/yr)
Base 78,842 157,684 Active
(1) Transport Factor = 50%
b. Any addition, deletion, or modification of the listed allocation(s) (other than to correct
typographical errors) or any change in status of any of the listed allocations shall be
considered a major modification of this permit and shall be subject to the public review
process afforded such modifications under state and federal rules.
a. The following table lists the Total Nitrogen (TN) allocation(s) assigned to, acquired by, or
transferred to the Permittee in accordance with the Neuse River nutrient management rule
(T15A NCAC 02B .0234) and the status of each as of permit issuance. For compliance
purposes, this table does not supercede any TN limit(s) established elsewhere in this pennit
or in the NPDES permit of a compliance association of which the Permittee is a Co-Permittee
Member.
ALLOCATION
TYPE
12/7/97;
4/1/03
City of Wilson
Hominy Creek WWMF
NPDES No. NC0023906
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.
Assigned by Rule
(T15A NCAC 02B .0234)
Footnote:
Attention:
City of Wilson
Hominy Creek WWMF
NPDES No. NC0023906
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.
A. (5.) 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 °/o.
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-Februaiy 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-Februaiy 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. If reporting
pass/fail results using the parameter code TGP3B, DWQ Form AT-1 (original) is sent to the below
address. If reporting Chronic Value results using the parameter code THP3B, DWQ Form AT-3
(original) is to be sent to the following address:
NC DENR / Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no
later than 30 days after the end of the reporting period for which the report is made.
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 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 Section at the address cited above.
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.
City of Wilson
Hominy Creek WWMF
NPDES No. NC0023906
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.
If the Pennittee monitors any pollutant more frequently then required by this permit, the results
of such monitoring shall be included in the calculation and reporting of the data submitted on the
DMR and all AT Forms submitted.
A. (6.) Fecal Coliform Compliance Condition
Should the City7 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.
1.
2.
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
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
Indeno(l,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1.2.4- trichlorobenzene
3.
4.
City of Wilson
Hominy Creek WWME
NPDES No. NCOO239O6
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
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-dichloroethane
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-extractaljle 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) an th racen e
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, Central Files, 1617 Mail Service Center, Raleigh,
North Carolina 27699-1617.
Section A, Definitions
collected twice per month with at least ten calendar days between sampling events.
three separate calendar days.
Version 10/10/2007
Bypass
The known diversion o£ 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.
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
Standard Conditions
Page 1 of 16
3/Week
Samples
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
Calendar Quarter
One of the following distinct periods: January through March, April through June, July through September, and
October through December.
2/Month
Samples are
are collected three times per week on
Act or "the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 USC 1251, et. seq.
case of fecal
Annual Average
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar year. In the
coliform, the geometric mean of such discharges.
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 rhe 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 greater than 1/24 of the
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. Use of this method requires prior approval by the Director. This method
may only be used in situations where effluent flow rates vary less than 15 percent. The following
restrictions also apply:
> Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters
Calendar Day
The period from midnight of one day until midnight of the next day. However, for purposes of this permit, any
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
>
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>
>
EMC
The North Carolina Environmental Management Commission.
^kl’DES Permit Standard Conditions
Page 2 of 16
Hazardous Substance
Any substance designated under 40 CER Part 116 pursuant to Section 311 of the Clean Water Act.
DWQ or “the Division”
The Division of Water Quality, Department of Environment and Natural Resources.
Daily Maximum
The highest “daily discharge” for conventional and other non-toxicant parameters. NOTE,: Permittees may not
submit a “daily average” calculation [for determining compliance with permit limits] for toxicants. See rhe relevant
Federal effluent guideline[s] for the appropriate calculation interval.
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.
Geometric Mean
Fhe Nth root of rhe product of the individual values where N = the number of individual values. For purposes of
calculating rhe geometric mean, values of “0” (or “< [detection level]”) shall be considered = 1.
Facility Closure
Phe cessation of wastewater treatment at a permitted facility, or rhe cessation of all activities that require coverage
under the NPDES. Completion of facility closure will allow this permit to be rescinded.
Influent samples shall not be collected more than once per hour.
Permittees with wastewater treatment systems whose detention time < 24 hours shall collect effluent
grab samples at intervals of no greater than 20 minutes apart during any 24-hour period.
Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect
effluent grab samples at least every X hours [X = days detention time] over a 24-hour period. Effluent
samples shall be collected at least every six hours; there must be a minimum of four samples during a 24-
hour sampling period.
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 parameters), that requirement will be so noted on the Effluent Eimitations and Monitoring Page(s).
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. The "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 122.2)
T
of fecal
Section B. General Conditions
1.
a.
b.
c.
Vers/on 10/10/2007
Permit Issuing Authorin'
The Director of the Division of Water Quality.
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.
Standard Conditions
Page 3 of 16
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.
Toxic Pollutant:
Any pollutant listed
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 wliich can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Quarterly Average (concentration limit)
The average of all samples taken over a calendar quarter.
as toxic under Section 307(a)(1) of the Clean Water Act.
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.
Put)' 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].
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
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.
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(13)(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)1
Weekly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the case
coliform, the geometric mean of such discharges.
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4.
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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 NCGS 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 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)]
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 NCGS 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.
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)]
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)]
Duty 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 with a reasonable likelihood of adversely affecting human health or the environment [40
CFR 122.41 (d)].
Any person who knowingly 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)]
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]
6.
7.
8.
a.
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11. Signatory Requirements
All applications, reports,
[40 CFR 122.41 (k)].
MBK)HS ^Biir Standard Conditions
Page 5 of 16
or information submitted to the Permit Issuing Authority shall be signed and certified
9. Duty to Reapply
If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the
Permittee must apply for and obtain a new permit [40 CFR 122.41 (b)].
offshore physical structures or
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.
,\ny 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, will subject
the Permittee to enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
(inshore or ( Hfshore Construction
This permit does not authorize or approve the construction of any onshore or
facilities or rhe undertaking of any work in any navigable waters.
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-23J.
Duty7 to Provide Information
The Permittee shall 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 shall also furnish to rhe
Permit Issuing Authority upon request, copies of records required by this permit [40 CFR 122.41 (h)].
5. 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)].
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 otlier 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 recommendations, 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].
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3.
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Section C. Operation and Maintenance of Pollution Controls
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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 currently 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].
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) (2)
may cause this Division to initiate action to revoke the permit.
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.
Certification. Any person signing a document under paragraphs a. or b. of this section shall make the
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."
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 rhe facility, a new
authorization satisfying the requirements of paragraph (1)) of this section 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] ’
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall 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:
1. The authorization is made in writing by a person described above;
2. The authorization specified either an individual or a position having responsibility for the overall
operation of the regulated facility or activity, such as the position of plant manager, operator of a well or
well field, superintendent, a position of equivalent responsibility, or an individual or position having
overall responsibility 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
The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22]
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
or anticipated noncompliance does not stay any permit condition [40 CFR 122.41 (f)].
r
2.
3.
a.
b.
c.
Version 10/10/2007
The ORC of each Class II, III and IV facility must:
r- X’isit the facility at least five days per week, excluding holidays
> Properly manage and document daily operation and maintenance of the facility
Comply with all other conditions of 15A NCAC 8G.0204.
^But Standard Conditions
Page 7 of 16
a.
b.
or back-up ORC.
The ORC of each Class I facility must:
> Visit rhe facility at least weekly
Comply with all other conditions of 15A NCAC 8G.0204.
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)].
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 are 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)].
Prohibition of Bypass
(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.
Once the facility is classified, the Permittee shall submit a letter to the Certification Commission designating rhe
operator in responsible charge:
Within 60 calendar days prior to wastewater being introduced into a new system
Witlrin 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
4. 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 cause effluent limitations to be exceeded, but
only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to die
provisions of Paragraphs b. and c. of this section.
Notice [40 CFR 122.41 (m) (3)]
(1) Anticipated bypass. If the Permittee knows in advance of rhe need for a b}-pass, it shall submit prior
notice, if possible at least ten days before the dare of the bypass; including an evaluation of the
anticipated quality and effect of the bypass.
(2) Unanticipated bypass. The Permittee shall submit notice of an unanticipated bypass as required in Part
II. E. 6. (24-hour notice).
a.
b.
Section D. Monitoring and Records
1.
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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.
Conditions necessary for a demonstration 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) of this permit.
(4) The Permittee complied with any remedial measures required under Part II. B. 2. of this permit.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 211.0124 —
Reliability’) to prevent the discharge of untreated or inadequately treated wastes during electrical power failures
either by means of alternate power sources, standby generators or retention of inadequately treated effluent.
(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 tliis section.
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)].
(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.
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 limitations if the requirements of
paragraph b. of this condition are met. No determination made during administrative review of claims that
noncompliance was caused by’ upset, and before an action for noncompliance, is final administrative action
subject to judicial review.
6. Removed Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 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.
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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
?||Bl>ES ^^But Standard Conditions
Page 9 of 16
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.
To 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.
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].
The first DMR is due on the last day of the month following rhe 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:
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 last calendar day of the month following the completed reporting period.
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:
r* all calibration and maintenance records
> all original strip chart recordings for continuous monitoring instrumentation
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 $10,000 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 $20,000 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.
a.
b.
Section E Reporting Requirements
1.
2.
a.
b.
c.
3.
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Change in Discharge
All discharges authorized herein shall be consistent with rhe terms and conditions of this permit. The discharge
of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall
constitute a violation of the permit.
or sample taken pursuant to the requirements of this permit, the Permittee shall record
the following information [40 CFR 122.41]:
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:
> 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 bv request of the Director at any time [40 CFR
122.41],
Anticipated Noncompliance
The 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)].
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;
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The dafe(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29 (b); or
lhe 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 alteration, 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.
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 tills 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)].
4.
5.
a.
a.
b.
c.
8.
9.
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)].
Occurrences outside normal business hours may also be reported to the Division’s Emergency Response
personnel at [phone], [phone] or [phone].
Standard Conditions
Page 11 of 16
The Director may waive the written report
report has been received within 24 hours.
or forms
on a case-by-case basis for reports under this section if the oral
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)].
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)].
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:
7. 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)].
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.
b. 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.
c. 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.
Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II. D. 2)
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently 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.
6. Twenty-four Hour Reporting
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 rime the Permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of rhe time the Permittee becomes aware of rhe circumstances. The written
submission shall contain a description of rhe noncompliance, and its cause; the period of noncompliance,
including exact dates and times, and if the noncompliance has not been corrected, rhe anticipated time it is
expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the
noncompliance [40 CFR 122.41 (1) (6)].
1
as it knows or has reason to believe (40 CFR 122.42):
a.
b.
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PART III
OTHER REQUIREMENTS
iJPDES Permit Standard Conditions
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Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon
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";
Section A. Construction
The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment
capacity, not 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
rhe 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 rhe Permittee (NCGS 143-215.1C).
The report shall summarize rhe 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 rhe calendar or fiscal year, depending upon
which annual period is used for evaluation.
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. 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.
Section B. Groundwater Monitoring
The Permittee shall, upon written notice from the Director, conduct groundwater monitoring as may be required to
determine the compliance of this NPDES permitted facility with rhe current groundwater standards.
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) I wo hundred micrograms per liter (200 pg/L) for acrolein and acrylonitrile; five hundred micrograms
per liter (500 pg/L) for 2.4-dinitrophenol and for 2-methyl-4.6-dinitrophenol; and one milligram per liter
(1 mg/L) for antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
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
not more than S25,000 per violation, or by imprisonment for not more than two years per violation, or by both
[40 CFR 122.41],
Persons reporting such occurrences by telephone shall also file a written report within 5 davs following first
knowledge of the occurrence.
Section A. Publicly Owned Treatment Works (POTWs)
1.
2.
3.
Section B. Municipal Control of Pollutants from Industrial Users.
1.
2.
a.
b.
d.
e.
Version 10/10/2007
(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.
PART IV
SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES
t Standard Conditions
Page 13 of 16
Section E. Facility Closure Requirements
The Permittee must notify die 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
adverse impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit
continue at the permitted facility.
Section D. Evaluation of Wastewater Discharge Alternatives
The Permittee shall evaluate all wastewater disposal alternatives and pursue the most environmentally sound
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.
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;
f.products of mineral oil origin in amounts that will
g-
h.
3.
4.
5.
Section C. Pretreatment Programs
1.
2.
3.
4.
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jjPDES Permit Standard Conditions
' Page 14 of 16
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.
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.
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8) of the Clean
Water Act, tire 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
bur is not limited to the implementation of the following conditions and requirements:
This permit shall be modified, or alternatively, revoked and reissued, to incorporate or modify an approved
PO'FW 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.
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.
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.).
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
Division a Pretreatment Program for approval per 15A NCAC 2H .0907(a) or modify an existing
Pretreatment Program per 15A NCAC 2H .0907(b).
Petroleum oil, nonbiodegradable cutting oil, or
cause interference or pass through;
Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a
quantity that may cause acute worker health and safety problems;
Any trucked or hauled pollutants, except at discharge points designated by the POTW.
Headworks Analysis (HWA) and Local I ,imits
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 rhe 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 122.44]. 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.
r 1
5.
6.
7.
8.
9.
10.
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Pretrearment Annual Reports (P.YR)
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.
a.
b.
Standard C.'onditi<>ns
Page 15 of 16
Enforcement Response Plan (ERP)
The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(1)) 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.
SIU Self Monitoring and Reporting
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 15A NCAC 2H .0908.
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 pretrearment 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 (IUP).
Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined bv the HWA.
P( )TW 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:
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 tlirough 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;
Authorization to Construct (AtC)
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.
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:
NC DENR / DWQ / Pretreatment Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
a.)
b.)
c.)
d.)
e.)
11.
12.
13.
14.
Version 10/10/2007
Funding and Financial Report
Fhe Permittee shall maintain adequate funding and staffing levels to accomplish the objectives of its
approved pretreatment program.
jPDES Permit Standard Conditions
Page 16 of 16
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 quality records, and records of industrial impact
on die POTW.
These reports shall be submitted according to a schedule established by the Director and shall contain the
following:
Public Notice
The Permittee shall publish annually a list of Significant Industrial Users (SIUs) that were in Significant
Non-Compliance (SNC) as defined in the Permittee's Division-approved Sewer Use Ordinance with
applicable pretreatment requirements and standards during the previous twelve month period. This list
shall be published within four months of the applicable twelve-month period.
Modification to Pretreatment Programs
Modifications to rhe approved pretreatment program including but not limited to local limits
modifications, POTW monitoring of their Significant Industrial Users (SIUs), and Monitoring Plan
modifications, shall be considered a permit modification and shall be governed by 15 NCAC 2H .0114 and
15A NCAC 2H .0907.
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 summary (PPS) on specific forms approved by the Division;
Significant Non-Compliance Report (SNCR)
Fhe nature of tire violations and the actions taken or proposed to correct the violations on
specific forms approved by the Division;
Industrial Data Summan- Forms (IDSF)
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 fable, new or modified enforcement compliance schedules,
public notice of SIUs in SNC, and any other information, upon request, which in the
opinion of the Director is needed to determine compliance with the pretreatment
implementation requirements of this permit;
Part B., B.3.
Plant Description
The two (2) preaeration basins shown on the schematic (Figure 1-2) are no longer in service.
As shown in Figure 1-2, the Hominy Creek WRF provides tertiary treatment, including nitrogen
and phosphorus removal, for a design capacity of 14 mgd. Raw wastewater from the off-site and
on-site pump stations receives preliminary treatment by screening and grit removal before being
conveyed to the primary clarifiers. From the primary clarifiers, How is distributed to the
biological nutrient removal (BNR) activated sludge stage. Major process units of the BNR
activated sludge stage consist of a biological phosphorus removal (BPR) tank, seven (7) aeration
tanks, five (5) secondary clarifiers and three (3) return activated sludge (RAS) pumping stations.
Secondary clarifier effluent receives tertiary treatment in five (5) effluent filters and is then
aerated and disinfected in two (2) post aeration/chlorine contact tanks to meet DO and fecal
coliform effluent limits. The effluent is then dechlorinated at the end of the post aeration/chlorine
contact tanks to meet a total residual chlorine effluent limit, and is discharged to Contentnea
Creek through the 48-inch outfall.
The Hominy Creek Water Reclamation Facility (WRF) is located south of the City of Wilson on
SR 1602. Plant effluent from the facility is piped through approximately 7,700 feet of 48-inch
outfall to Contentnea Creek. The discharge point is approximately 2.5 miles downstream of the
Wiggins Mill Reservoir dam. Wastewater is conveyed to the Hominy Creek WRF by the
Hominy Swamp, Contentnea and Toisnot Swamp interceptors. Flow enters the plant through the
36-inch Hominy Swamp Interceptor, the 30-inch Contentnea Interceptor and the 20-inch force
main from the Toisnot Pump Station. A separate influent pump station at the treatment plant site
conveys wastewater from the Hominy Swamp and Contentnea Interceptors to the preliminary
treatment facilities.
Part B., B.3.
1
The solids handling facilities for the primary and waste activated sludge consist of two (2)
gravity belt thickeners for waste activated sludge thickening, four (4) anaerobic digesters for
solids stabilization, two (2) belt filter presses for dewatering, three (3) liquid sludge holding
tanks, an alkaline sludge stabilization facility capable of producing a Class A stabilized sludge
product and a covered sludge storage pad. The Class A dewatered sludge is disposed of by land
application on privately-owned farm land. The anaerobically digested Class B sludge is land
applied on privately- owned farm land or tak^’: to a privately owned composting facility.
Existing sand drying beds are available for standby dewatering or for use when draining a
digester for cleaning.