NC0024201_Permit (Issuance)_20130301

NPDES DOCUHENT 5CANNINO COVER SHEET
NC0024201
Roanoke River WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
March 1, 2013
This document is printed on reuse paper - igriore any
content on the reirerse side

Pat McCrory
Governor
AAA
FENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Charles Wakild, P. E. John E. Skvarla, III
Director Secretary
March 1, 2013
R. Danieley Brown, Chief Executive Officer
Roanoke Rapids Sanitary District
1000 Jackson Street, P.O. Box 308
Roanoke Rapids, North Carolina 27870
Subject:
Dear Mr. Brown:
Issuance of Final Permit
NPDES Permit No. NC0024201
Roanoke River Waste Treatment Plant
Halifax County
Class IV Facility
Division of Water Quality (Division) personnel have reviewed and approved your application for
a renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge
permit. It 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 October 15, 2007.
This final permit contains the following changes from the previously -issued permit:
• The priority pollutant scan requirement was changed from annual to three times during the
current permit term, consistent with Division guidance for major municipal wastewater
treatment facilities. Please note that this testing requires a low-level sampling method for
mercury (EPA Method 1631E).
• A footnote was added to the limit for TRC such that the Division shall consider all effluent
TRC values reported below 50 pg/L to be in compliance with the permit. However, you must
continue to record and submit all values reported by a North Carolina certified laboratory
(including field certified), even if these values fall below 50 pg/L.
• Due to the lack of reasonable potential to cause exceedances of water quality standards,
monitoring requirements for total copper and total zinc were eliminated.
• Effluent monitoring frequencies for CBOD, ammonia -nitrogen and fecal coliform were
reduced from daily to twice weekly, in accordance with Division guidelines for exceptionally
performing facilities.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet www.ncwaterouality.org
Noe Cazolina
7Vaturaij
An Equal Opportunity 1 Affirmative Action Employer

• Instream monitoring frequencies for temperature and for dissolved oxygen were reduced.
During the summer months instream monitoring will now be required weekly, and during the
winter months twice per month. For these parameters the discharge was shown to have
little or no impact on the receiving stream.
• The list of treatment units on the supplement to permit cover sheet was updated.
• In accordance with the Statewide Mercury TMDL implementation, a mercury minimization
plan (MMP) was added as a special condition since effluent values exceeded 1 ng/I. The
plan must be developed within 180 days of the permit effective date.
• In response to your request, a new downstream monitoring point was selected for safety
reasons.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing upon written request within thirty
(30) days after receiving this letter. Your request must take the form of a written petition
conforming to Chapter 150B of the North Carolina General Statutes, and must be filed with the
Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-
6714. Unless such demand is made, this permit remains final and binding.
This permit is not transferable except after notifying the Division of Water Quality. The Division
may modify and reissue or revoke this permit. Please note that this permit does not affect your
legal obligation to obtain other permits required by the Division of Water Quality, the Division of
Land Resources, the Division of Coastal Management, or other federal or local agencies.
If you have questions, or if we can be of further assistance, please contact Tom Belnick at
[[e-mail]] or at [phone].
Sincerely,
harles Wakild, P. E.
Enclosure: NPDES Permit FINAL NC0024201
Cc: Raleigh Regional Office, Surface Water Protection Section
NPDES Files
Central Files
Ec: Environmental Sciences Section/Aquatic Toxicology Unit, Susan Meadows
EPA Region IV, Ben Ghosh

Permit NC0024201
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
•r.
NPDES PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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 Environmental •
Management Commission, and the Federal Water Pollution Control Act, as amended, the
Roanoke Rapids Sanitary District
is hereby authorized to discharge wastewater from a facility located at the
Roanoke River Waste Treatment Plant
135 Aqueduct Road, Weldon
Halifax County
to receiving waters designated as the Roanoke River within the Roanoke River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts 1, II, III, and IV hereof.
The permit shall become effective April 1, 2013.
This permit and the authorization to discharge shall expire at midnight on March 31, 2017.
Signed this day March 1 1,2013:
iarles Wakild, P. E., Director
Division of Water Quality
By Authority of the Environmental Management Commission.

Permit NC0024201 .
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are
hereby,revoked, and as of this issuance, any previously issued permit bearing this number is
no longer effective. Therefore, the exclusive authority to operate and discharge from this
facility arises under the permit conditions,.requirements, terms, and provisions included herein.
Roanoke Rapids Sanitary District
is hereby authorized to:
1. continue to operate an existing 8.34 MGD wastewater treatment facility comprised of the
following treatment components:
■ bar screen and grit chamber
■ dual primary clarifiers
• dual trickling filters
■ three aeration basins
• dual final clarifiers
■ hypochlorite disinfection and dechlorination system
• dual secondary sludge thickeners
• three anaerobic digesters
• lime stabilization
• sludge storage
■ sludge drying beds
located at 135 Aqueduct Road near Weldon in Halifax County, and
2. discharge from said treatment works at the location specified on the attached map through
Outfall 001 into the Roanoke River, a class C waterbody within the Roanoke River Basin.

Wastewater
Treatment Plant
_��-- ._,w, _ --,�
Roanoke Rapids Sanitary District WWTP
Receiving Stream:
Latitude:
Stream Class:
State Grid/Quad:
Roanoke River
36° 26' 13" N
C
B 28 NE/Weldon
Drainage Basin: Roanoke
Longitude: 77° 36' 36" W
Sub -Basin: 03-02-08
I-IUC: 03010107
North
NPDES Permit NC0024201
Halifax County

Permit NC0024201
A (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning with the effective date and lasting until permit expiration, the permittee is authorized
to discharge treated wastewater from outfall 001. Such discharges shall be limited and
monitored by the permittee as specified below:
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Flow
8.34 MGD
Continuous
Recording
Influent or
Effluent
CBOD, 5-day, 20°C 2
25.0 mg/L
37.5 mg/L
.
2/week
Composite
Influent &
Effluent
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent &
Effluent
NH3 as N
2/week
Composite
Effluent
Total Residual Chlorine,3
28 pg/L
Daily
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100 ml
400/100 ml
2/week
Grab
Effluent
pH
Between 6.0 and 9.0 Standard Units
Daily
Grab
Effluent
Dissolved Oxygen
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent
Total Nitrogen
(NO2+ NO3+ TKN)
Monthly
Composite
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Chronic Toxicity 4 •
Quarterly
Composite
Effluent
Dissolved Oxygen
Variable 5
Grab
U, D
Temperature
Variable 5
Grab
U, D
Effluent Pollutant Scan
Monitor and Report
Footnote 6
Footnote 6
Effluent
Footnotes:
1. U: Upstream, at 308 Rollingwood Road. D: Downstream, at 419 River Road in Weldon. The permittee may
discontinue influent, effluent and/or stream sampling at such times when adverse stream flows or extreme
weather conditions pose a substantial risk of injury or death to persons collecting samples. On such days,
written justification for sample discontinuance shall be specified in that month's discharge monitoring report
(DMR). Sampling and monitoring shall resume at the first safe opportunity.
2. Monthly Average effluent CBOD5 and TSS concentrations shall not exceed 15% of respective influent value
(i.e., 85% removal is required).
3. The Division shall consider all effluent TRC values reported below 50 pg/I to be in compliance with this permit.
The permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
even if these values fall below 50 pg/l.
4. Chronic Toxicity (Ceriodaphnia) at 1.1%; January, April, July and October [see A (2)].
5. Variable Sampling - Upstream/Downstream samples shall be collected weekly during June, July, August, and
September; and 2/month during the remaining months of the year.
6. The permittee shall perform three effluent pollutant scans during the term of this permit [see A (3)].
The permittee shall discharge no floating solids or foam visible in other than trace amounts.

.c
Permit NC0024201
A (2) CHRONIC TOXICITY PERMIT LIMIT (Quarterly)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 1.1 %.
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
January, April, July and October. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes:
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.
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:
Attention: North Carolina 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.
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.
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.

Permit NC0024201
A (3) EFFLUENT POLLUTANT SCAN
The permittee shall perform a total of three (3) effluent pollutant scans for all parameters listed below.
One scan must be performed in each of the following years: 2013, 2014, and 2015 Analytical methods
shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether
parameters are present in concentrations greater than applicable standards and criteria. Samples should
be collected with one quarterly toxicity test each year, and must represent seasonal variation (i.e., do not
sample in the same quarter every year). Unless otherwise indicated, metals shall be analyzed as "total
recoverable."
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631E)
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-tetraphloroethane
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
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(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the
Director) by December 31st of each designated sampling year. The report shall be submitted to the
following address: NC DENR / DWQ 1 Central Files, 1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.

Permit NC0024201
A (4) MERCURY MINIMIZATION PLAN (MMP)
The permittee shall develop and implement a mercury minimization plan during this permit term. 'The
MMP shall be developed within 180 days of the NPDES permit effective date, and shall be available for
inspection on -site. A sample MMP was developed through a stakeholder review process and has been
placed on the Division website for guidance (http://portal.ncdenr.orq/web/wq/swp/ps/npdes, under
Model Mercury Minimization Plan). The MMP should place emphasis on identification of mercury
contributors and goals for reduction. Results shall be summarized and submitted with the next permit
renewal application.

�11s4 M NCUD2Y UI 62/2i0i3
Belnick, Tom
From: Belnick, Tom
Sent: Thursday, February 28, 2013 4:38 PM
To: '[e-mail]'
Subject: NPDES Permit NC0024201
Mr Brown- I just left you a voice message but wanted to follow up with two items from your NPDES permit renewal.
Your renewal was drafted by Gil Vinzani, but since he has left the Division I am conducting a final review before signing
the Final Permit and mailing out. The two items of note are:
1. For the Special Condition A(4) Mercury Minimization Plan, we added a completion date for plan development of
180 days after the permit effective date, consistent with the TMDL implementation.
2. You had requested a waiver of the 85% removal requirement for CBOD/TSS under certain less concentrated
influent events. This request was not incorporated into this permit renewal. Exceptions to the 85% removal
requirement are identified in Federal regulation at 40 CFR 133.103. The Permittee may have their percent
removal limit reduced if they can demonstrate that the less concentrated effluent is not the result of excessive
infiltration/inflow, among other criteria. If you meet the exception criteria in the Federal regulations and wish
to pursue this permit action in the future, you can request a permit modification. The demonstration that the
exception criteria are met would need to be approved by the Division as well as EPA.
If you have any questions on your NPDES Permit, feel free to contact me.
Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDENR/Division of Water Quality
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
1

NCDENR / DWQ / NPDES Unit
FACT SHEET
FOR NPDES PERMIT DEVELOPMENT
Permit No. NC0024201
Facility Information
Applicant / Facility Name
Roanoke Rapids Sanitary District / Roanoke River Waste
Treatment Plant
Applicant Address
P.O. Box 308, Roanoke Rapids, NC 27870
Facility Address
135 Aqueduct Road, Weldon, NC 27870
Permitted Flow (MGD)
8.34
Type of Waste
Municipal
Facility Grade / Permit Status
Grade IV / Renewal
Drainage Basin / County
Roanoke River Basin / Halifax County
Miscellaneous
Receiving Stream
Roanoke River
Regional Office
Raleigh
Stream Classification
C
State Grid /
USGS Quad
B 28 NE /
Weldon, NC
Subbasin
03-02-08
Date:
February 7, 2013
8-Digit HUC
03010107
•
"'
Lat. 36° 26' 13" N Long. 77° 36' 36" W
Summer 7Q10 (cfs)
1,172
On 303 (d) list?
No
Average Flow (cfs)
IWC (%)
1.1%
Summary
• The Roanoke River Waste Treatment Plant is an 8.34 MGD, Grade IV publicly owned
treatment works (POTW) with a pretreatment program. The treatment system consists of
a bar screen, grit chamber, dual primary clarifiers, dual trickling filters, three aeration
basins, dual final clarifiers, a hypochlorite disinfection and dechlorination system, dual
secondary sludge thickeners, three anaerobic digesters, a lime stabilization facility, and
sludge drying beds.
• The permittee relocated outfall 001 to the Roanoke River main stem from one of its
tributaries (Chockoyette Creek) in April 2005.
• The WWTP serves a total population of 18,986. The three SIU's are Kennametal, Inc,
Reser's Fine Foods, and the Rosemary Power Station, which combine to discharge an
average of 150,000 GPD.
• For 2011 the average flow was 3.37 MGD, or about 40 percent of plant capacity.
Compliance Review
The compliance history in BIMS was reviewed for the period January 2008 to April 2012. In
January 2011, the facility was given a NOV for exceedance of its monthly average TSS limit.
However, the exceedance was only five percent over the limit (47.58 mg/L as compared to a
limit of 45 mg/L). There were no other permit limit exceedances during this review period,
Fact Sheet
Renew I -- NPDES Permit NC0024201
Pugs 1

including whole effluent toxicity testing. Overall, the facility has an excellent compliance
record.
The Division's Raleigh Regional Office (RRO) conducted a facility compliance evaluation
inspection on June 4, 2012. The facility received high marks and overall maintenance was
deemed to be "excellent". Similarly, on October 19, 2010, RRO staff found the facility in
good condition and in compliance with the permit. The only recommendation was to modify
the facility description on the supplement sheet to include the new hypochlorite disinfection
and dechlorination system. This modification was included in the draft permit.
Reasonable Potential Analyses (RPA)
Pollutants of concern were identified through data taken from the permit application and the
submitted monthly DMRs. The RPA database extended from January 2009 to March 2012, but
also included earlier data from the submitted PPAs (five annual PPAs were submitted covering
2007-2011). Pretreatment data was included on submitted DMRs. No parameters showed
reasonable potential to cause an exceedance of water quality standards.
With respect to mercury, there are numerous hits above the 12 ng/L standard. A statewide
TMDL was developed to address this situation, and has recently been approved by EPA
(October 12, 2012). Owing largely to of the great amount of dilution afforded by the Roanoke
River, no annual average limit is required. In accordance with Division guidelines, a mercury
minimization plan (MMP) is included as a special condition in this permit renewal.
Instream Monitoring
Presently, the only monitored instream parameters are dissolved oxygen and temperature.
A review of the daily data from January 2010 until April 2012 shows that downstream
dissolved oxygen concentrations are actually higher than the upstream concentrations.
Downstream concentrations for the past 16 months (January 2011 to April 2012) averaged
0.44 mg/L higher, while downstream concentrations in calendar year 2010 averaged over
1.4 mg/L higher. In addition, downstream temperatures during the review period averaged
0.2- 0.3 degrees Celsius cooler than the upstream temperatures.
It may be concluded that for temperature and dissolved oxygen this discharge has little or no
impact on the receiving stream. It is therefore proposed to reduce the summer (June -
September) 3/week instream monitoring frequency to weekly, and to reduce the weekly
monitoring requirement for the other months to 2/month. This monitoring frequency
reduction was specifically requested in the permit application.
Reduced Monitoring Frequency Analysis
In its application, the permittee requested that monitoring frequencies for several effluent
parameters be reduced. Using the Division's recently developed guidelines for the four
eligible parameters; reductions from daily monitoring to twice per week were made for three:
CBOD, ammonia -nitrogen, and fecal coliform. In summary, the facility meets eligibility
criteria, and three of the four parameters meet the specific criteria for monitoring frequency
reduction. Ammonia -nitrogen does not have a permit limit, and as such cannot be
measured against the criteria of # exceedances and percent over twice the limit. However,
since the 3-year average is only 2.52 mg/L, it would easily qualify using a default monthly
average limit of 35 mg/L. Refer to the following table:
Fact Sheet
Renewal -- NPDES NC0024201
Page 2

Parameter
Permit
Limit
3-year average
# exceedances
over 200%
Comments
CBOD ;
25 mg/L
6.94
1
Allow reduction -
meets criteria
TSS
30 mg/L
17.7
1
Disallow - 3-year
average is over 50%
of the limit
NH3-N
N/A
2.52
N/A
Allow Reduction -
meets criteria
Fecal Coliform
200 per
100 mL
15.6
14
Allow Reduction -
meets criteria
Total Mercury Analysis
The dilution factor based on 7Q10 flow used for the Roanoke River at the site of outfall 001
is 90.9. The allowable effluent concentration for mercury is therefore 12 ng/L times this
number, or 1091 ng/L. Comparing this number to the annual averages of mercury sampling
over the past five years shows the following:
YEAR
2008
2009
2010:
2011
2012*
# SAMPLES .
1
1
9
11
8
ANNUAL AVERAGE
CONCENTR. (NG/L)
17.3
6.56
20.2
10.2
14.9
MAXIMUM SAMPLE
RESULT (NG/L)
17.3
6.56
39
25
42
* includes data up to August 2012
All annual average effluent concentrations are considerably below the allowable mercury
concentration of 1091 ng/L. In addition, there are no individual sample results greater than
the TBEL limit of 47 ng/L. As per Division guidelines for TMDL implementation, no
monitoring other than the three PPA samples will be required, and a mercury minimization
plan (MMP) will be added as a special condition.
Summary of Proposed Changes
The following permit changes to the previous permit are recommended for this renewal
period:
• A new footnote for total chlorine residual (TRC) was added, which allows sample
results up to 50 pg/L to be considered in compliance with the limit. The footnote also
indicates that the permittee shall continue to record and submit all values reported by
a North Carolina certified laboratory even if these values fall below 50 pg/L.
• The priority pollutant scan requirement was changed from annual to three times during
the current permit term, consistent with the Division guidance for major municipal
wastewater treatment facilities. Please note that this testing requires a low-level
sampling method for mercury (EPA Method 1631E).
Fact Sheet
Renewal -- NPDES NC0024201
Page 3

• Monitoring for total copper and for total zinc was eliminated, due to the analysis that
shows these do not have a reasonable potential to cause exceedances of water quality
standards in the receiving steam. However, these parameters continue to be monitored
as part of the facility's long-term monitoring plan.
• The monitoring frequencies for CBOD, ammonia -nitrogen and fecal coliform were
reduced from daily to twice weekly, in accordance with Division guidelines for
exceptionally performing facilities.
• The list of treatment units on the supplement to permit cover sheet was updated.
• Instream monitoring frequencies for temperature and for dissolved oxygen were
reduced. During the summer months instream monitoring will now be required weekly,
and during the winter months twice per month. For these parameters the discharge was
shown to have little or no impact on the receiving stream.
• In accordance with Division guidelines, a mercury minimization plan was added as a
special condition.
• In response to a request by the permittee, a new downstream monitoring point was
selected for safety reasons.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Permit Scheduled to Issue:
Permit Expiration Date:
December 5, 2012
February 2013
March 31, 2017
NPDES Unit Contact
If you have questions regarding any of the above information or on the attached permit,
please contact Gil Vinzani at [phone] or at gil.vinzani©ncdenr.gov.
SIGNATURE:
DATE:
Fact Sheet
Renewal -- NPDES NC0024201
Page 4
�eh.7 2ot3

Vinzani, Gil
From: Vinzani, Gil
Sent: Thursday, February 07, 2013 3:09 PM
To: 'Sadler, Mary'
Subject: Roanoke Rapids Draft NPDES Permit Comments
Hi, Mary:
In response to the Town's letter regarding the draft permit:
1. We will change the downstream sampling location in the permit as requested.
2. We cannot change the TRC limit as shown on the table; however, we do not consider anything under 50
ug/L to be a permit exceedance. This is explained in the footnote. The Division believes the 50 level is the
quantitation limit, below which it is very difficult to measure.
3. The monitoring frequencies for TN and TP cannot be reduced to quarterly. 15A NCAC 2B .0508 (d) (2) (B)
(ii) specifically requires monthly monitoring for these parameters for all facilities in the Roanoke basin with a
design capacity of 1 MGD or greater.
4. The most recent boilerplate standard conditions will be attached.
I'm submitting the final permit for signature tomorrow.
Gil
Gil Vinzani, P. E.
Complex NPDES Permits Unit
Phone: [phone]
E-mail correspondence to and from this address may be subject to the NC Public Records Act
1

Roanoke Rapids Sanitary District
January 25, 2013
Mr. Gil Vinzani
NC DENR, Division of Water Quality, NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina, 27699-1617
RE: Renewal of NPDES Permit Number NC0024201
Roanoke River Waste Treatment Plant
Dear Mr. Vinzani,
P.O. Box 308
1000 Jackson Street
Roanoke Rapids, NC 27870
[phone]
Fax: [phone]
www.rrsd.org
The Roanoke Rapids Sanitary District (RRSD) received a draft permit for our Roanoke River WWTP on
December 27, 2012. We have reviewed our draft permit and wish to provide the following comments:
• We have identified a new downstream monitoring location. Traffic has increased significantly on
U.S. 158, and we are concerned for the safety of our staff. We have identified 419 River Road,
Weldon, NC 27890 as our new downstream monitoring point. This location is approximately 500
yards downstream of our present monitoring location. The new location is in Halifax County on the
south bank of the river.
• We appreciate Footnote #3 specifying DWQ's clarification of the total residual chlorine (TRC)
quantification level of 50 ug/l. However, this change is not reflected in the effluent permit table in
Condition A(1). Please change the effluent daily maximum chlorine value from 28 ug/I to 50 ug/1.
• We request that DWQ reduce the total nitrogen and phosphorus sampling from once a month to once
per quarter. Our receiving stream and watershed is not designated as nutrient sensitive waters (NSW),
and we feel that monthly nutrient sampling is excessive.
• We also request that the revised November 2011 standard conditions be attached to our permit in lieu
of the addendum page.
We very much appreciate the time and effort of the NPDES Unit to consider our requests for this permit
renewal. Please do not hesitate to call me (252-537-9137) or Mary Sadler with Hazen and Sawyer (919-
755-8560) if you have any questions.
Sincerely,
Roanoke Rapids Sanitary District
72„,_
R. Danieley Br vn, P.E.
Chief Executive Officer
cc: Gregg Camp, ORC RRSD Wastewater Treatment Plant
Jeff Poupart, DWQ, Point Source Branch Chief
Tom Belnick, DWQ, NPDES Unit Supervisor
Mary Sadler, Hazen and Sawyer
�`NT st47 QU��

SHERRY AGEE
AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA)
:Ss.
COUNTY OF HALIFAX )
Public Notice
North Carolina
Environmental
Management
Commission/
NPDES Unit
1617 Mail Service
Center
Raleigh, NC 27699-
1617
Notice of Intent to
Issue a NPDES
Wastewater Permit
The North Carolina
Environmental
Management
Commission propos-
es to issue a NPDES
wastewater dis-
charge permit to the
person(s) listed
below. Written com-
,- ments regarding the
"proposed permit will
be accepted until 30
days after the publish
date of this notice.
The Director of the
NC Division of Water
Quality (DWQ) may
hold a public hearing
should there be a
significant degree of
public interest.
Please mail com-
ments and/or infor-
mation requests to
DWQ at the above
address. Interested
persons may visit the
DWQ at 512 N.
Salisbury Street,
Raleigh, NC o
review informztion on
file. Additional nfor-
mation on NPDES
permits and tt11,
notice may be foind
on our website:
http://portal.ncdenr.nr
g/web/wq/swp/ps/npd
es/calendar, or by
calling (919) 807-
6390. The Roanoke
Rapids Sanitary
District requested
renewal of NPDES
permit NC0024201
for its wastewater
treatment plant in
Halifax County. This
permitted discharge
is treated municipal
wastewater to the
Roanoke River in the
Roanoke River
Basin.
December 23; 2012
being first duly sworn, deposes
and says: That (he) (she) is the Agent to the Publisher of THE
DAILY HERALD newspapers printed and published five days a
week in the County of Halifax, State of North Carolina, and of
general circulation in the cities of Roanoke Rapids, County of
Halifax, State of North Carolina and elsewhere, and thehereto
attached
PERMIT RENEWAL
RR SANITARY DISTRICT
C S,
was printed and published correctly in the regular and entire issue of said
THE DAILY HERALD for issues, that the first was
23rd DECEMBER 12
made on the day of 1
23rd
dayof
and the last publication thereof was made on the
DECEMBER 12
20 that said publication
was made on each of the following dates, to wit:
12/23/12
Request of
By
NC DIVISION OF WATER QUAL
The Daily Herald
Subscribed sworn to before me this
20 12
•
Notary Signature
day of
23rd DECEMBER
Notary Public in and for the County of Halifax,State of North Carolina
My Commission Expires: lvjy (:onmussion Expires May 13, 2017

REASONABLE POTENTIAL ANALYSIS
13
Mercury
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Date
4/1/2012
3/1/2012
2/1/2012
1/1/2012
12/1 /2011
11/1/2011
10/1/2011
9/1/2011
8/1/2011
7/1/2011
6/1/2011
5/1/2011
4/1/2011
3/1/2011
2/1/2011
1/1/2011
12/1/2010
11/1/2010
10/1/2010
9/1/2010
8/1/2010
7/1/2010
6/1/2010
5/1/2010
1/1/2009
10/1/2008
6/1/2010
5/1/2012
6/1/2012
7/1/2012
8/1/2012
Data BDL=1/2DL Results
16.3 16.3 Std Dev.
42 42 Mean
21.1 21.1 C.V.
9.25 9.25 n
5.75 5.75
1.17 1.17 MuIt Factor =
6 6 Max. Value
6.19 6.19 Max. Pred Cw
2.9 2.9
4.67 4.67
25 25
14 14
15.4 15.4
17.4 17.4
13.3 13.3
14.1 14.1
14.5 14.5
39 39
17.6 17.6
23.1 23.1
12 12
7.74 7.74
13.8 13.8
6.56 6.56
17.3 17.3
39.8 39.8
11.8 11.8
6.82 6.82
5 5
6.8 6.8
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
10.5727
14.5450
0.7269
30
42.0 ng/L
94. ngrL
tr GPI)
9 .2 oak. . x 7Q ( cis ,Qdu-ciat
fa)( 9 - f u91
4v&Ee4GE.
Lu'lIi f?roittR60
1V(MP RE-qUII''N17
ifin/
%% is/?-Ul 2
RPA 24201, data
- 1 - 11/5/2012

/ONTO RI NG FI'Q UEN'Y gE7)1Xc77)N C R-t_C LL/4 TIOU S
09-11 BOC 09-11 TSS 09-11 NH3 09-11 Fec.
6000.
5200.
2455.
2070.
1900.
1410.
ye 1390.
1240.
1200.
C4)(74- (41-3.i
1020.
3t 900.
890.
810.
7..o&9'2M(
720.
634.
612.
600.
600.
600.
600.
600.
600.
600.
600.
600.
580.
560.
560.
550.
FtZO AA 14(GHE$1 544.
536.
1V i-ovieST 530.
520.
C �A, /I ����jjjj 504.
�� �_ TJ� % iV�t 376.
372.
�64 > f165 (17.9 ' 330.
33.8 59.7 17.1 328.
32.4 V 56.2 13.2 328.
9reakr ?�
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1
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9r � 410-v, 20044 O/
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ee
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C51i Cr j4'� (oii

2.8
2.7
2.7
2.7
2.6
2.6
2.6
2.6
2.6
2.6
2.5
2.5
2.4
2.4
2.4
2.3
2.2
2.
2.
�Vec s 2.
2.
6.941789
8.3
8.
8.
7.8
7.8
7.7
7.7
7.5
7.4
7.3
7.
7.
6.9
6.9
6.9
6.8
6.6
6.6
5.9
5.7
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
4.9 0.5
17.767423 2.521188
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
15.35993
C r t Teri&...
"3_ ea.r .A-uerale5 pAr .c
leas 445o 7,
44. a Cic«-( ie_
1
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4
•
Q ver 7( S) ceoes Nor TAct-eZy r 1 ea
k Boo ,A1 0.5 rift / of-c 1/-
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* recai 6e0, oe) Filtoo &I L
4 17•5 . -/L
sAp L
GS de- !

DWQ Guidance Regarding the Reduction of Monitoring Frequencies in
NPDES Permits for Exceptionally Performing Facilities
October 22, 2012
A. Purpose
In its efforts to reduce the regulatory burden upon permittees while maintaining adequate compliance
oversight over point source discharges, DWQ has developed the following guidance for the reduction
of monitoring frequencies in NPDES permits for specific target parameters. Standard minimum
NPDES monitoring frequencies are established in 15A NCAC 2B .0508 for discharges from facilities
with specific Standard Industrial Classification (SIC) categories. However, 2B .0508(b)(1) states: "If it
is demonstrated to the satisfaction of the Director that any of the tests and measurements, sampling
points, or frequency of sampling requirements, as required in this Rule for a particular SIC group, are
not applicable to the discharge of a particular water pollution control facility, or if it can be
demonstrated that the objectives of this Section can be achieved by other acceptable means then
such requirements may be waived or modified to the extent that the Director determines to be
appropriate? This document identifies criteria to be used by DWQ that satisfies the regulatory
standard for the allowance of reduced monitoring frequencies for facilities included in SIC 4952.
This guidance applies to facilities with outstanding NPDES program compliance histories, exhibiting
effluent discharges that are excellent in both quality and consistency. Such performance will
demonstrate that compliance for particular parameters can be adequately evaluated with less
monitoring. Facilities demonstrating consistent, long-term treatment performance at levels far below
effluent limitations (<50%) may be considered for a reduction in monitoring from existing permit
frequencies to a 2/week minimum frequency for the parameters BOD5, CBOD5 TSS, NH3-N and fecal
coliform/enterococci (the "target parameters").
B. Approval Criteria
Individual NPDES facilities shall submit a written request to modify their NPDES permit specifying
which- parameters are to be considered for reduced monitoring . Permit holders must include with
their requests sufficient data, statistical analyses, and other information to support the justification for
reduced monitoring. NPDES permit staff shall review the application and supporting information.
Approval of reduced monitoring frequency shall be granted if all the criteria below are met:
• The facility has no more than one civil penalty assessment for permit limit violations for each
target parameter during the previous three years.
• Neither the permittee nor any of its employees have been convicted of criminal violations of the
Clean Water Act within the previous five years.
• The facility is not currently under an SOC for target parameter effluent limit noncompliance.
• The facility is not on EPA's Quarterly Noncompliance Report for target parameter limit violations.
• For BOD5, CBOD5, TSS, NH3-N and TSS, the three year arithmetic mean of effluent data must be
Tess than fifty percent of the monthly average permit limit. For fecal coliform or enterococci, the

three year geometric mean must be less than 50 percent of the monthly average permit limit. For
parameters with summer and winter limits, an annual arithmetic mean of the seasonal limits may
be used in the calculation.
• With the exception of fecal coliform or enterococci, no more than 15 daily sampling results over
the 3-year review period can be over 200% of the monthly average limit for BOD5, CBOD5, TSS,
or NH3-N . Values associated with documented impacts of extreme weather or events beyond the
control of the permittee will not be included.
• For fecal coliform or enterococci, no more than 20 daily sampling results may be over 200% of the
weekly average limit. Values associated with documented impacts of extreme weather or events
beyond the control of the permittee will not be included.
• For the four target parameters, sampling results shall not show more than two non -monthly
average limit violations during the previous year.
• Reduced effluent monitoring must not impair assessment of sensitive downstream uses, such as
endangered species.
C. Implementation
After DWQ review and approval, the facility's NPDES permit will be reissued with reduced monitoring
frequencies for qualified parameters. Additional NPDES permit requirements will include:
• Eligible facilities may be granted a reduction from existing permit monitoring frequencies to a
2/week minimum frequency for the four target parameters. Reductions will be made for both
effluent and influent sampling.
• Where monitoring is reduced to twice per week, it must occur on any two non-consecutive days
during the calendar week (Sunday through Saturday).
• Required monitoring frequency reductions establish new permit minimums for monitoring. As
always, facilities may monitor more often than required in the permit.
• If a reportable event, as defined by the permit [e.g., Part II (E) (6 & 9)] occurs, any facility granted
reduced monitoring frequencies will be encouraged to monitor on a daily basis until the episode is
resolved.
Monitoring frequency reduction from the minimum frequencies reductions established by the rules are
based upon consistent, exceptional performance. DWQ may revoke on a case -by -case basis these
reductions if the facility begins to perform in noncompliance with permit limits. If a facility's monitoring
reduction for a specific parameter is removed through permit modification, reconsideration of
monitoring frequency reduction will only occur three years following the revocation/permit modification
action, or at the next permit renewal.

Ioanoke Rapids San. District WWTP REASONABLE POTENTIAL ANALYSIS
NC0024201
Qw (MGD) =
IQ10S (cfs)
7Q1OS (cfs) =
7Q1OW (cfs) =
30Q2 (cfs) =
Avg. Stream Flow, QA (cfs) =
Receiving Stream:
8.34
940.31
1172.00
NO 7Q10w DATA
1172.00
1172.00
Roanoke River
WWTP/WTP Class: IV
IWC (a3 IQlOS = 1.36%
IWC c® 7Q1OS = 1.09%
IWC tea 7Q1OW = NIA
IWC ® 30Q2 = 1.09%
IWC Q QA = 1.09%
Stream Class: C
Outfall.001
Qw = 8.34 I1AGD
PARAMETER
TYPE
(1)
STANDARDS 8 CRITERIA (2)
a
UNITS
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied CIA FAV /
Chronic Standard Acute
Max Pred
Il # Det. Cw Allowable Cw
Arsenic
Arsenic
C
C
50 FW(7Q10s)
10 HH/WS(Qavg)
ug/L
ug/L
39 -4
39 -4
9.6
9.6
Acute: NO WQS
_ ____—_—__ _ _-
Chronic: 4,587.2
No o value > Allowable Cw
Cnic: 917.4
hro
No value > Allowable Cw
_ _____ __— __— _
No RP, Predicted Max < 50% of Allowable Cw- No
Monitoring required
No- RP, Predicted Max < 50%0 of Allowable Cw- No'
Monitoring required
Beryllium
NC
6.5 FW(7Q10s)
ug/L
0 0
N/A
Acute: NO WQS
_ __ _—_--_ _ —_
Chronic: 596.3
_ _ _ _ _ _ __ ___
Cadmium
NC
2 FW(7Q10s) 15
ug/L
34 -5
1.5
Acute: 1,102.9
- _ _ — _ — - _ _ _ -
Chronic: 183.5
No value > Allowable Cw
_ _ _ _ _ _ _ _ _
No RP, 'Predicted Max < 50% of Allowable Cw - No
Monitoring required
Chlorides (AL)
NC
230 FW(7Q10s)
mg/L
0 0
N/A
Acute: NO WQS
_ _ Ch_ _ _ _ _ _ _ _ _ _
ronic: 21,101
_ _ _ _ _ _ _ _
Chlorinated Phenolic Compounds
NC
1 A(30Q2)
ug/L
0 0
N/A
Acute: NO WQS
_ _
Chronic: ---- _---
91.7
------ -- — — — — -- —
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
5 2
Note: n < 9
Limited data set
71.2
Default C.V.
Acute: NO WQS
-_—__ _ ____
Chronic 27,522 9
No value > Allowable Cw
_ _ —_ _ --- _ _-- _
No RP Predicted Max< 50% of Allowable Cw- - No
Monitoring required
Chromium
•
NC
50 FW(7Q10s) 1022
ug/L
34 3
11.2
Acute: 75,147.1
_ _-__—_— _ __
Chronic: 4,587.2
No value > Allowable Cw
_ —_ _ —_—_ _ —_—_ _
No RP, Predicted Max <50% of Allowable Cw- No
Monitoringrequired
Copper (AL)
NC
7 FW(7Q10s) 7
ug/L
45 35
132
Acute: 536.8
Chronic: ---- __ --
642.
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
--------------- -----------
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
39 3
5.0
Acute: 1,617.6
- __ —_—_ _ __—__
Chronic: 458.7
No value > Allowable Cw
__—_— __—_— _ ___ —__.
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Page 1 of 2
RPA 24201, rpa
6/13/2012

Roanoke Rapids San. District WWTP REASONABLE POTENTIAL ANALYSIS
NC0024201
Outfall 001
Qw=8.34MGD
Fluoride
NC
1800
FW(7Q10s)
ug/L
0
0
N/A
Acute: NO WQS
_ __ —__ _ _
Chronic: 165,137.E
4.
_ __-__ _ _ _- _--
Lead
NC
25
FW(7Q10s)
33.8
ug/L
34
2
27.8
Acute: 2,485.3
_Ch_onc: —_—__29_.E__
No value > Allowable Cw
_ _P,_ Pre_ict_ed _ax_ 5_0 _Al__ble Cw_No_
Monitoring required
.
Mercury
NC
12
FW(7Q10s)
0.5
ng/L
23
23
101.2
Acute: NO WQS
_ __ —_—__ _ __
Chronic:1,100.9
No value > Allowable Cw
--------
—_—_ _—_—_—_—_—_—
Molybdenum
NC
2000
HH(7Q10s)
ug/L
34
3
157.5
Acute: NO WQS
_ _ _ _ — _ _ _ _ _ _
Chronic: 183,486.2
No value > Allowable Cw
— _ _ _ _ _ _ _ _ _ _ -
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Nickel
NC
88
FW(7Q10s)
261
ug/L
34
4
6.5
Acute: 19,191.2
Chronic: 8,073.4
No value > Allowable Cw
_
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Selenium
NC
5
FW(7Q10s)
56
ug/L
34
-2
18.E
Acute: 4,117.6
_ ____—_—__ _ __
Chronic: 458.7
No value > Allowable Cw
______ _ —_—__ _ —_—_
No RP, Predicted Max c 50°%` of Allowable Cw - No
Monitoring required
Silver (AL)
NC
0.06
FW(7Q10s)
1.23
ug/L
0
0
N/A
Acute: 90.441
_ _ _ _ — _ — _ _ _ _ _
Chronic: 5.505
_ _ _ _ _ _ _ _ _ _
Zinc (AL)
NC
50
FW(7Q10s)
67
ug/L
44
43
806.4
Acute: 4,926.5
Chronic: 4,587.2
No value > Allowable Cw
•
No RP, Predicted Max <50°% of Allowable Cw - No
Monitoring required
0
0
N/A
Acute:
Chronic-----------
—------- — — — --- — ------
0
0
N/A
Acute:
_ _
Chronic: --------------------
,
— — --- - — -
0
0
N/A
Acute:
_ _
Chronic: ----------
---_ -----------------------
0
0
N/A
Acute:
Chronic: ----------
— - ----- — ------ — --- —
Page2of2
RPA 24201, rpa
6/13/2012

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NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
PERMIT WRITERS - AFTER you get this form
back from PERCS:
Check all that apply
Notify PERCS if LTMP/STMP data we said should
Date of Request
5/16/2012
municipal renewal
x
be on DMRs is not really there, so we can get it for
Requestor
Gil Vinzani
new industries
you (or NOV POTW).
Facility Name
Roanoke Rapids SD WWTP
expansion
- Notify PERCS if you want us to keep a specific
Permit Number
NC0024201
Speculative limits
POC in LTMP/STMP so you will have data for next
renewal.
Region
Raleigh
stream reclass.
permit
- Email PERCS draft permit, fact sheet, RPA.
Basin
Roanoke
stream relocation
- Send PERCS paper copy of permit (w/o NPDES
7Q10 change
boilerplate), cover letter, final fact sheet. Email RPA
other
if changes.
other
check applicable
PERCS staff:
Other Comments to
PERCS:
'
CTB, CHO, LUM, NEW, ROA
HIW, LTN, NEU, YAD - Monti Hassan
BRD, CPF, FRB, TAR - Sarah Morrison
PERCS
Status of
PRETREATMENT STAFF COMPLETES THIS PART
Pretreatment Program (check all that apply)
1) facility has no SIU's, does have Division approved Pretreatment Program
that is INACTIVE
2) facility has no SIU's, does not have Division approved Pretreatment
Program
V/
3) facility has Sills and DWQ approved Pretreatment Program (list "DEV"
if program still under development)
ti/
3a) Full Program with LTMP
3b) Modified Program with STMP
4) additional conditions regarding Pretreatment attached or listed below
STMP time frame:
Most recent:
Flow, MGD
Permitt d
Actin�j_�jim
pe Io 1 Actual
Next Cycle:
Industrial
(, , :j [v
0, 1
ior
Uncontrollable
n/a
3 •
°)
POC in
LTMP/
STMP
Parameter of
Concern (POC)
Check List
POC due to
NPDES/ Non-
Disch Permit
Limit
Required
by EPA*
Required
by 503
Sludge"
1'
POC due
IU to S"'
POTW POC
(Explain
below)""
STMP
Effluent
Freq
LTMP
Efflue
F
V
BOD
V
✓
4
M
V
TSS
✓
✓
4
Q M
Q= Quarterly
V
NH3
4
Q M
y
V
Arsenic
'1.0/
4
Q M
J
Cadmium
J
t/
1/
4
Q M
'1
Chromium
4
V
4
Q M
4
Copper
.4
V-
%7
4
Q M
V/
Cyanide
4
Q M
all data on DMRs?
4//
Lead
4V
.✓
4
Q M
YES
Vz
Mercury
(/
4
Q M
NO (attach data)
V
Molybdenum
✓
l
Nickel
4
4
Q M
4
Q M
vSilver
Selenium
1/4
Q M
4
Zinc
4
if
4
Q M
data in spreadsheet?
Total Nitrogen
4
Q M
YES (email to writer)
Phosphorus
4
Q M
NO
4
Q M
4
Q M
4
Q M
4
Q M
'Always in the LTMP/STMP " Only in LTMP/STMP if sludge land app or composte (dif POCs for incinerators)
"' Only in LTMP/STMP while SIU still discharges to POTW ""' Only in LTMP/STMP when pollutant is still of concern to POTW
Comments to Permit Writer (ex., explanation of any POOCs; info you have on IU related investigations into NPDES problems):
aria,� VIT�� � ?
►��
Li, 1
tly\tt,
Pretreatment request forml (2).xls
Revised July 24, 2007

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Vinzani, Gil
From: Parnell, David
Sent: Tuesday, December 18, 2012 10:40 AM
To: Vinzani, Gil
Subject: RE: Draft NPDES Permit NC0024201 - Roanoke Rapids
Gil,
inspected this plant yesterday and they are a very well run facility. I could find very little to complain about.
All of the components listed are present at the site.
am comfortable with the issuance of the permit.
Dave
From: Vinzani, Gil
Sent: Monday, December 17, 2012 3:00 PM
To: Parnell, David
Subject: Draft NPDES Permit NC0024201 - Roanoke Rapids
Dave:
See attached for your review and comments.
Gil
Gil Vinzani, P. E.
Complex NPDES Permits Unit
Phone: [phone]
E-mail correspondence to and from this address may be subject to the NC Public Records Act
1

IWC Calculations
Roanoke River Waste Treatment Plant
NC0024201
Prepared By: Gil Vinzani
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
8.34
1172
1172
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ugll)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
1172
8.34
12.927
17.0
0
1.09
1558
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/l)
w7Q10 (CFS)
2001100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
91.66 Upstream Bkgd (mg/l)
IWC (%)
Allowable Conc. (mgll)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. BAT for Minor Domestics: 2 mg/l (summer) and 4 mg/l (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
1172
8.34
12.927
1.0
0.22
1.09
71.7
1172
8.34
12.927
1.8
0.22
1.09
145.0
'avt.Arv-;.0 ( 6Eat riot,
CO2r1 go .b 2/k.
FREQ. f2.5;3U T1OA1
Gvl�c-�r�u�-S
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current VersionsANLA; TB 1/16/2009

Roanoke Rapids Sanitary District
September 30, 2011
Ms. Dina Sprinkle
NC DENR, Division of Water Quality, NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina, 27699-1617
RE: Renewal of NPDES Permit Number NC0024201
Roanoke River Waste Treatment Plant
Dear Ms. Sprinkle,
P.O. Box 308
1000 Jackson Street
Roanoke Rapids, NC 27870
[phone]
Fax: [phone]
www.rrsd.org
The Roanoke Rapids Sanitary District (RRSD) is permitted to discharge treated effluent
to the Roanoke River. The permit expires on March 31, 2012. The enclosed application is
for renewal of the referenced permit. In accordance with the requirements of North
Carolina G.S. 143.215.1(c), we are submitting one signed original and two copies of the
completed application package. The application package includes the following:
1. Completed permit application form, EPA Form 2A, with figures.
2. Attachment A: Priority Pollutant Scan Analyses (five scans).
3. Attachment B: Second Species Toxicity Tests (four tests).
4. Attachment C: Biosolids Management Description.
RRSD respectfully requests that the following issues be addressed in this permit renewal:
• We request that Footnote 1 remain in the permit unaltered.
• We are in the process of identifying a new downstream sampling location. Our
current downstream sampling location is at U.S. 158 crossing the Roanoke River.
Traffic has increased significantly on U.S. 158, and we are concerned for the safety of
our staff. Our intention is to send a letter to the Division in the next few weeks that
will outline the reason for our request. We will identify the location of the proposed
and current downstream sampling locations in this correspondence.
We request that Footnote 2 — Monthly average effluent CBOD5 and TSS
concentrations shall not exceed 15% of the respective influent value (i.e., 85%
removal is required) — be removed from the permit. We believe that the additional
percentage removal limitation is not warranted as the facility continuously meets the
monthly and weekly average permit limit.
If Footnote 2 is not removed, we request that the language be modified to make an
exception for low influent suspended solids and CBOD events. Our facility has difficulty
meeting this percent removal requirement when influent suspended solids and CBOD
concentrations are extremely low. Thus, we request that Footnote 2 be modified, as
follows: Monthly average effluent CBOD5 and TSS concentrations shall not exceed 15%

of the respective influent value (Le., 85% removal is required). This requirement shall be
waived if influent TSS concentrations are less than 150 mg/I and/or influent CBOD is less
than 100 mg/l.
• We request an increase in the Total Residual Chlorine permit limit from 28 µg/L to 50
µg/L pursuant to the DWQ Point Source Branch correspondence dated May 1, 2008.
e request a reduction in monitoring frequency for several parameters. We
performed a Monitoring Burden Reduction (MBR) analysis on our effluent
monitoring data for the last two years as recommended in the EPA Guide for
Performance Based Reductions of NPDES Permit Monitoring Frequencies (April
1996). A summary of these results is presented in Table 1.
Table 1: Summary of Monitoring Burden Reduction Analysis on RRSD Effluent Monitoring Data
>
v
Parameter
Dissolved Oxygen (June,
July, August, September)
Dissolved Oxygen
(October through May)
E
J
E
L
C
o an
E
0
0
L
co
co
0.37
0
C \
d c
el 2 tal
U>
7.6%
m
E LL E
L •�
CD CO
a c E
L
L 12 Q
L M o
3/Week
6.5 0.72 11.1% 1/Week
Temperature (June, July, 25.6 1.06 4.2% 3/Week
August, September)
Temperature 15.7 3.91 24.9% 1/Week
(October through May)
Copper 0.009 0.012 ----
Zinc
0.058 0.072 ----
CBOD 25 6.7
2/Month
1/Week
2/Month
1/Month Data reported
from Long Term
Monitoring Plan
1/Month Data reported
from Long Term
Monitoring Plan
2.03 29.4% 28% 5/week 2/week
TSS 30 18.4 0.038 0.21% 61% 5/week 3/week
Ammonia 3.50
Total Nitrogen 13.8
Total Phosphorus 1.84
1.88 53.8% - 5/week
3.10 22.4% ---- 1/month
0.69 37.5% 1/month
1/week
1/quarter
1/quarter
The monitoring data indicates that our discharge is routinely in compliance with permit
limits. The coefficient of variation is less than 40% for all of our samples except for
ammonia. The low coefficient of variation indicates nominal variability in our effluent.
Our conclusions from the MBR analysis are as follows:
o We request a reduction in the frequency of upstream and downstream stream
sampling events for dissolved oxygen and temperature from 3/week to 1/week
in June, July, August, and September. We also request a reduction in the
upstream and downstream sampling events from October through May to be
reduced from 1/week to 2/month.
o Reduce the CBOD5 monitoring frequency from daily sampling to 2/week.
o Reduce the TSS monitoring frequency from daily sampling to 3/week
o Reduce the ammonia monitoring frequency from daily sampling to 1/week.

•
o Reduce the total nitrogen and total phosphorous monitoring frequency from
monthly sampling to once per quarter.
o Remove the monthly effluent composite sampling for copper and zinc. Our
Discharge Monitoring Report (DMR) data shows negligible amounts of these
pollutants in our effluent. These monitoring frequencies were originally
required in the former NPDES permit allowing a discharge to Chockoyotte
Creek. The results of these metals tests will continue to be transferred from
our Long Term Monitoring Plan and reported on our DMR quarterly and
monthly during Year 5 of the Long Term Monitoring Plan, as required.
o Reduce the chronic toxicity sampling (Ceriodaphnia) from quarterly to
annually. We have been conducting chronic toxicity testing since April 1993.
All of our toxicity tests have passed, including the second species testing with
Fathead Minnow.
• We request the following information as part of the draft permit preparation:
o A copy of the permit Fact Sheet.
o Documentation for any methodology, data, and assumptions used in any
permit modification, including Reasonable Potential Analyses, if applicable.
o A copy of any comments that are received from the public regarding this
permit renewal, if applicable.
We would like to offer a final consideration regarding the timing of our draft NPDES
permit. We understand that there are several outstanding technical issues that the
Division is in the process of resolving, e.g. language revisions to permit standard
conditions, the proposed EPA impaired water status for mercury over the entire state of
North Carolina, the North Carolina Water Quality Association's (NCQWA) request for
,r;e reduced sam lin and monitorin , and the issues associated with the Triennial Review
e would like to request that t ese technical issues be resolved prior to our draft permit
being issued. We would continue to operate under our current permit until such time a
draft NPDES is prepared by the Division and the final permit is issued.
We very much appreciate the time and effort of the NPDES Unit to consider our requests
for this permit renewal. Please do not hesitate to call myself (252-537-9137) or Mary
Sadler with Hazen and Sawyer (919-755-8560) if you have any questions.
Sincerely,
Roanoke Rapids Sanitary District
R. Danieley own, P.E.
Chief Executive Officer
Attachments
cc: Gregg Camp, ORC RRSD Wastewater Treatment Plant
Jeff Poupart, DWQ, Point Source Branch Chief
Tom Belnick, DWQ, NPDES Unit Supervisor
Mary Sadler, Hazen and Sawyer
File

FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
SUPPLEMENTAL APPLICATION INFORMATION
PART (.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users
complete part F.
GENERAL INFORMATION:
or which receive RCRA,CERCLA,
to, an approved pretreatment program?
Users (Cilia). Provide the number
or other remedial wastes must
of each of the following types of
questions F.3 through F.8 and
F.1. Pretreatment program. Does the treatment works have, or is subject
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 2
b. Number of CIUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
to the treatment works, copy
Supply the following information for each SIU. If more than one SIU discharges
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Kennametal, Inc.
Mailing Address: 100 Kennametal Road
Weldon, NC 27890
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Machine tool accessory manufacturing
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Tungsten carbide and ceramic cutting tool inserts
Raw material(s): Tungsten carbide and ceramic powders
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into
day (gpd) and whether the discharge is continuous or Intermittent.
7147 gpd ( continuous or X intermittent)
the collection system in gallons per
discharged into the collection system
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
N/A gpd (N/A continuous or N/A intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits BI Yes 0 No
b. Categorical pretreatment standards ® Yes 0 No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 18 of 22

FACIUTY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check ail
❑ Truck 0 Rail 0 Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount
EPA Hazardous Waste Number Amount
years received RCRA hazardous
that apply): NIA
waste by truck, rail or dedicated pipe?
Units
(volume or mass, specify units).
N/A N/A N/A
N/A N/A N/A
N/A N/A N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remedlation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
N/A
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
N/A
F.16. Waste Treatment
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ® No
If yes, describe the treatment (provide information about the removal efaency):
N/A
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
N/A
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 19 of 22

FACILITY NAME AND PERMIT NUMBER:
Roanoke River VVWTP. NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users
complete part F.
GENERAL INFORMATION:
or which receive RCRA,CERCLA,
to, an approved pretreatment program?
Users (CIUs). Provide the number
or other remedial wastes must
of each of the following types of
questions F.3 through F.8 and
F.1. Pretreatment program. Does the treatment works have, or is subject
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial
industrial users that discharge to the treatment works.
a. Number of non -categorical Sills. 2
b. Number of ClUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
to the treatment works, copy
Supply the following information for each SIU. If more than one SIU discharges
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Reser's Fine Foods
Mailing Address: 11251 Hwy 903
Halifax. NC 27839
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Food processing
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal prorPc.¢es and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Cold salads, baked beans, meat salads
Raw material(s): Potatoes, pastas, cabbage, salad dressings
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into
day (gpd) and whether the discharge is continuous or intermittent.
123.752 gpd (X continuous or intermittent)
the collection system in gallons per
discharged into the collection system
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
NIA gpd (NIA continuous or N/A intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three
❑ Yes ® No (go to F.12)
F.1O. Waste transport. Method by which RCRA waste is received (check all
❑ Truck 0 Rail 0 Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount
EPA Hazardous Waste Number Amount
years received RCRA hazardous
that apply): NIA
waste by truck, rail or dedicated pipe?
(volume or mass, specify units).
Units
N/A N/A N/A
N/A N/A N/A
N/A N/A N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has It been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
N/A
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
N/A
F.16. Waste Treatment
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ® No
If yes, describe the treatment (provide information about the removal efficiency):
N/A
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
N/A
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 19 of 22

FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant Industrial users
complete part F.
GENERAL INFORMATION:
or which receive RCRA,CERCLA,
to, an approved pretreatment program?
Users (ClUs). Provide the number
or other remedial wastes must
of each of the following types of
questions F.3 through F.8 and
F.1. Pretreatment program. Does the treatment works have, or is subject
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial
Industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 2
b. Number of ClUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
to the treatment works, copy
Supply the following information for each SIU. If more than one SIU discharges
provide the information requested for each SIU.
F.3. Significant Industrial User information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Rosemary Power Station
Mailing Address: 120 West 12`" Street
Roanoke Rapids. NC 27870
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Power generation
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Electricity
Raw material(s): Natural gas, No.2 fuel oil, and water
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into
day (gpd) and whether the discharge Is continuous or intermittent.
18765 gpd ( continuous or X intermittent)
the collection system in gallons per
into the collection system
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
N/A gpd {NIA continuous or N/A intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards 0 Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
Roanoke River WWTP, NC0024201
PERMIT ACTION REQUESTED:
Standard Renewal
RIVER BASIN:
Roanoke
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
N/A
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past throe
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all
❑ Truck 0 Rail 0 Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount
EPA Hazardous Waste Number Amount
years received RCRA hazardous
that apply): NIA
waste by truck, rail or dedicated pipe?
(volume or mass, specify units).
Units
N/A N/A NIA
N/A N/A N/A
N/A N/A N/A
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATIONICORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
N/A
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
N/A
F.15. Waste Treatment
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ® No
If yes, describe the treatment (provide information about the removal efficiency):
N/A
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If Intermittent, describe discharge schedule.
N/A
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 19 of 22

•
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PLANT SITE PLAN RENSED SEPT. 2011
ROANOKE RAPIDS SANITARY DISTRICT
WASTEWATER TREATMENT RANT
ARCAD6
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ROANOKE RAPIDS SANITARY DISTRICT
WASTEWATER TREATMENT PLANT
ARCADIS

4
Process Narrat.ive
Influent flow enters the Roanoke River Waste Treatment Plant via two outfalls: the Chockoyotte
Creek Outfall and the Roanoke River Outfall. Both outfalls combine in a collection box prior to
mechanical screening and grit removal. Influent flow may be routed to influent equalization,
when necessary. The influent wastewater is lifted via an influent pump station to primary
clarifiers. Primary clarified effluent gravity flows to trickling filters. Trickling filter effluent is
pumped to aeration basins for further secondary treatment. The mixed liquor then flows to
final clarifiers. Clarified effluent is then chlorinated and dechlorinated. Effluent flow is
measured prior to discharge to the Roanoke River. An effluent flood pump station is used to
pump to the Roanoke River when flow by gravity may not be achieved.
The solids handling process description is provided in Attachment C.

41
ATTACHMENT C
Biosolids Program
Roanoke Rapids Sanitary District
NPDES Permit No. NC0024201
Land Application Permit No. WQ0001989
Synagro Southeast, Inc. manages Land application of residuals. The Roanoke
Rapids Sanitary District holds the land application permit and provides a
licensed ORC and back-up ORC as required. Synagro Southeast, Inc. provides
transport and application equipment and personnel. District personnel perform
all treatment of residuals.
At present, the District has permitted approximately 3,100 acres of private
farmland of which 91 acres of self owned land for residual application.
Approximately 2,600,000 gallons of -5% solids is applied to an estimated 226
acres per year. Soil pH is adjusted to achieve a soil pH as specified by permit
conditions.
The District utilizes final alkaline stabilization of waste activated sludge and
anaerobic digested primary sludge in order to meet pathogen and vector
reduction requirements. The alkaline stabilization process and anaerobic
digested primary sludge meets all requirements for pathogen and vector
attraction reduction (VAR) for Class B biosolids.
Pathogen and VAR reduction for Waste Activated Sludge (WAS) is
accomplished by lime stabilization, mixing, and a holding system to maintain
proper pH control. Primary solids are treated through three anaerobic digesters
with solids either stored for liquid application or dried on drying beds. Storage
(holding) of treated solids is provided by an above ground 1.0 million gallon
(MG) tank and backed -up by two retrofitted clarifiers adding 0.375 MG each to
provide a total of 1.75 MG storage in an emergency.
Roanoke Rapids Sanitary District
R. Danieley Brn, P.E.
Chief Executi - Officer