NCG110042_Modification Application_20221129

FOR AGENCY USE ONLY
A)G& aECEIVED
1
NC611
Assigned to: Q
ARO FRO MRO R O WARO WIRO WSRO 1 GEi��rJ� W4i2tprog'aM
Division of Energy, Mineral, and Land Resources Land Quality Section
National Pollutant Discharge Elimination System
NCG110000 Notice of Intent
This General Permit covers STORMWATER DISCHARGES associated with activities classified as: Treatment Works
treating domestic sewage or any other sewage sludge of wastewater treatment device or system, used in the
storage, treatment, recycling, and reclamation of municipal or domestic sewage, with a design flow of 1.0 million
gallons per day or more, or required to have an approved pretreatment program under Title 40 Code of Federal
Regulations (CFR) Part 403, including lands dedicated to the disposal of sewage sludge that is located within the
confines of the facility; and like activities deemed by DEMLR to be similar in the process and/or the exposure of
raw materials, products, by-products, or waste materials. You can find information on the DEMLR Stormwater
Program at deq. nc. gov/SW.
Directions: Print or type all entries on this application. Send the original, signed application with all required
items listed in Item (6) below to: NCDEMLR Stormwater Program,1612 MSC, Raleigh, NC 27699-1612. The
submission of this application does not guarantee coverage under the General Permit. Prior to coverage under
this General Permit a site inspection will be conducted.
1. Owner/Operator (to whom all permit correspondence will be mailed):
Name of legal organizational entity:
Legally responsible person as signed in Item (7) below:
City of Roxboro
Allen Lockhart
Street address:
City:
State:
Zip Code:
PO Box 128
Roxboro
NC
27573
Telephone number:
Email address:
3365830224
[e-mail]
Type of Ownership:
Government
❑County ❑Federal !]Municipal ❑State
Non -government
❑Business (If ownership is business, a copy of NCSOS report must be included with this application)
❑ Individual
2. Industrial Facility (facility being permitted):
Facility name:
Facility environmental contact:
Roxboro WWTP
Derek Clayton
Street address:
City:
State:
Zip Code:
902 Cavel-Chub Lake Rd.
Roxboro
NC
27574
Parcel Identification Number (PIN):
County:
Person
Telephone number:
Email address:
3363226000
[e-mail]
4-digit SIC code:
Facility is:
Date operation is to begin or began:
4952
1 ❑ New ❑ Proposed I] Existing
NA
Latitude of entrance:
Longitude of entrance:
34.442615
78.978025
Page 1 of 5

Brief description of the types of industrial activities and products manufactured at this facility:
Biological Wastewater Treatment Plant
If the stormwater discharges to a municipal separate storm sewer system (MS4), name the operator of the MS4:
❑ N/A
3. Consuttant (if applicable):
Name of consultant:
Consulting firm:
Street address:
City:
State:
Zip Code:
Telephone number:
Email address:
4. Outfall(s) At least one outfall is required to be eligible for coverage.
3-4 digit identifier:
Name of receiving water:
Classification:
❑+ This water is impaired.
I
011
I Madowes Creek
C
❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
36.443704
78.997711
Brief description of the industrial activities that drain to this outfall:
Stone drains around the Oxidation ditch & the berrned septic unloading facility
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes I] No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier:
Name of receiving water:
Oassification:
El This water is impaired.
1
012
1 Marlowes Creek
C
❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
36.44023
78.978100
Brief description of the industrial activities that drain to this outfall:
Delivery of disinfection / dechlorination ( sodium hypochlorite & Dechlor C) Stonndrain protected by gate during delivery.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? []Yes EjNo
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier:
Name of receiving water:
Classification:
❑ This water is impaired.
1
013
Madowes Creek
C
❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
36.445511
78.978832
Brief description of the industrial activities that drain to this outfall:
Currently biological aeration basins, to be convened to EQ basins as pan of W WTP upgrade.
Maintenance shop services small equipment.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall?
I] Yes ❑ No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
Two Lawn tractors and a John Deere Gator serviced once per year in maint. shop...
Avg. 1 gal/month
All outfalls must be listed and at least one outfall is required. Additional outfalls may be added in the section
"Additional Outfalls" found on the last page of this NOL
Page 2 of 5

S. Other Facility Conditions (check all that apply and explain accordingly):
0 This facility has other NPDES permits.
If checked, list the permit numbers for all current NPDES permits:
NPDES permit NO. NCO021024
Z1 This facility has Non -Discharge permits (e.g. recycle permit).
If checked, list the permit numbers for all current Non -Discharge permits:
Land Application of Biosolids permit No. W00021 B26
El This facility uses best management practices or structural stormwater control measures.
If checked, briefly describe the practices/measures and show on site diagram:
BMP is achieved through good housekeeping, preventive maint., inspections, spill prevention, containment, sediment and erosion control
l This facility has a Stormwater Pollution Prevention Plan (SWPPP).
If checked, please list the date the SWPPP was implemented:
2004
❑ This facility stores hazardous waste in the 100-year floodplain.
If checked, describe how the area is protected from flooding:
NA
❑ This facility is a (mark all that apply)
❑ Hazardous Waste Generation Facility
❑ Hazardous Waste Treatment Facility
❑ Hazardous Waste Storage Facility
❑ Hazardous Waste Disposal Facility
If checked, indicate:
Kilograms of waste generated each month:
Types) of waste:
How material is stored:
Where material is stored:
Number of waste shipments per year:
Name of transport/disposal vendor:
Transport/disposal vendor EPA ID:
Vendor address:
❑ This facility is located on a Brownfield or Superfund site
If checked, briefly describe the site conditions
6. Required Items (Application will be returned unless all of the following items have been included):
❑ Check for $100 made payable to NCDEQ
❑ Copy of most recent Annual Report to the NC Secretary of State
❑ This completed application and any supporting documentation
l A site diagram showing, at a minimum, existing and proposed:
a) outline of drainage areas
b) surface waters
c) stormwater management structures
d) location of stormwater outfalls corresponding to the drainage areas
e) runoff conveyance features
f) areas where industrial process materials are stored
g) impervious areas
h) site property lines
El Copy of county map or USGS quad sheet with the location of the facility clearly marked
Page 3 of 5

7. Applicant Certification:
North Carolina General Statute 143-215.613 (i) provides that: Any person who knowingly makes any false statement,
representation, or certification in any application, record, report, plan, or other document filed or required to be maintained
under this Article or a rule implementing this Article ... shall be guilty of a Class 2 misdemeanor which may include a fine not
to exceed ten thousand dollars ($10,000).
Under penalty of law, I certify that:
❑ 1 am the person responsible for the permitted industrial activity, for satisfying the requirements of this permit, and for any
civil or criminal penalties incurred due to violations of this permit.
❑ The information submitted in this NOI is, to the best of my knowledge and belief, true, accurate, and complete based on
my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the
information.
❑ I will abide by all conditions of the NCG110000 permit. I understand that coverage under this permit will constitute the
permit requirements for the discharge(s) and is enforceable in the same manner as an individual permit.
❑ 1 hereby request coverage under the 0NCG11000jGeneral Permit. L /-
Printed Name of Applicant: H jl lfm !"✓k5
Title: G I`i'1 rA n *
1 7 v z-
(Signature of of A�) (Date Signed
Mail the entire package to: DEMLR —Stormwater Program
Department of Environmental Quality
1612 Mail Service Center
Raleigh, NC 27699-1612
Page 4 of 5

Additional Outfalls
3-4 digit identifier:
Name of receiving water:
Classification:
❑ This water is impaired.
014
1 Marlowes Creek
C
1 ❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
36.445627
78.977527
Brief description of the industrial activities that drain to this outfall:
Aerobic Digester, Digester Decant, aeration basins, oxidation ditch
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? 0 Yes ©+ No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier:
F Name of receiving water:
Classification:
❑+ This water is impaired.
1
015
1 Marlowes Creek
C
❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
36.447147
78.977453
Brief description of the industrial activities that drain to this outfall:
Drying beds for biosolids which are contained. outfall is in the street outside the beds.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? 0 Yes 0 No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier:
Name of receiving water:
Classification:
El This water is impaired.
016
IMarlowes
C
1 ❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
36.44610
78.97703
Brief description of the industrial activities that drain to this outfall:
Discharges rainwater from the west side of the sludge dewatering facility roof gutters.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? Dyes 0' No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier:
Name of receiving water:
1
Classification:
❑ This water is impaired.
017
Marlowes
C
1 ❑ This watershed has a TMDL
Latitude of outfall:
Longitude of outfall:
36.445620
78.976348
Brief description of the industrial activities that drain to this outfall:
Discharges rainwater from the east side dewatering facility roof gutters, Aerobic digester 2, dewatered biosolids storage
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? 0 Yes El No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier:
Name of receiving water:
Classification:
❑ This water is impaired.
❑ This watershed has a TMDL.
Latitude of outfall:
Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? 0 Yes 0 No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
Page 5 of 5

NORTH CAROLINA 2022 303(D) LIST
Upper Dan Roanoke River Basin
AU Name AU Number Classification AU_LengthArea AU_Units
AU ID Description
Smith River 22-40-(2.5) WS-IV;CA 0.5 FW Miles
6694 From a point 0.8 mile downstream of Rockingham County SR 1714 (Aiken Road) to Fieldcrest Mills Water
Supply Intake
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Benthos (Nar, AL, FW) 5 Exceeding Criteria Fair, Poor or Severe Bioclassification 2008
Smith River 22-40-(3) C 1.8 FW Miles
6695 From Fieldcrest Mills Water Supply Intake to Dan River
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Benthos (Nar, AL, FW) 5 Exceeding Criteria Fair, Poor or Severe Bioclassification 2008
Roanoke River Basin 03010104 Lower Dan
DAN RIVER (North Carolina portion)
22-(55.75) C
0.9 FW Miles
13645 From the City of Roxboro's intake to the last crossing of North Carolina -Virginia State Line
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Turbidity (50 NTU, AL, FW miles) 5 Exceeding Criteria 2018
Rattlesnake Creek 22-52 WS-IV 2.7 FW Miles
6739 From source to Dan River
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Fish Community (Nar, AL, FW) 5 Exceeding Criteria Fair, Poor or Severe Bioclassification 2022
Country Line Creek (Farmers Lake) 22-56-(3.5)a WS-II;HQW,CA 90.8 FW Acres
13211 Upper reservoir- From a point 0.5 mile upstream of mouth Nats Fork to dam at Farmer Lake (Town of
Yanceyville water supply intake located 1.8 mile upstream of N.C. Hwy, 62)
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Turbidity (25 NTU, AL, FW acres & SW) 5 Exceeding Criteria 2010
arloweCreek 22-58-12-6a C 6.6 FW Miles
6783 From source to Mitchell Creek
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Benthos (Nar, AL, FW) 5 Exceeding Criteria Fair, Poor or Severe Bioclassification 1998
Marlowe Creek 22-58-12-6b C 4.5 FW Miles
6784 From Mithcell Creek to Storys Creek
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Copper Dissolved Chronic (Calcuated, AL, FW) 5 Exceeding Criteria Exceeding Criteria with Statistical 2018
Confidence
6/7/2022 NC 2022 303d List- Approved by EPA 4/30/2022 Page 104 of 192

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Certificate of Coverage
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
GENERAL PERMIT NO. NCG110000
Certificate of Coverage No. NCG110042
STORMWATER DISCHARGES
I
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision 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,
City of Roxboro
i
is hereby authorized to discharge stormwater from a site located at:
Roxboro W WTP
902 Cavel-Chub Lake Rd
Roxboro
Person County
ito receiving waters designated as Madowe Creek, class C waters in the Roanoke River Basin, in accordance
with the effluent limitations, monitodng requirements, and other conditions set forth in N.C. General Permit No.
NCG110000, issued on 5/31/2018.
This Certificate of Coverage shall become effective on 611/2018.
This Certificate of Coverage shall remain in effect for the duration of the General Permit
f2nnw�e �
forWilliam E. (Toby) Vinson, Jr., P.E., CPM j
Interim Director, Division of Energy, Mineral, and Land Resources
By the Authority of the Environmental Management Commission

;:;..gig 1.-
NORTH CAROLINA DEPARTMENT OFF
ENVIRONMENTAL QUALITY
INVOICE
II I�I� III II IIIIIII IIII III II
Stormwater Annual Permit Fee j: +0 osv � Open
This Stormwater annual fee is required by the North Carolina Administrative Code 143-215.D(a). It covers the administrat
costs associated with your permit. It is required of any person holding a permit for any time during the annual fee period,
regardless of the facility's operating status. Failure to pay the fee by the due date will subject the permit to revocation.
Operating without a valid permit is a violation and is subject to a $10,000 per day fine. If the permit is revoked and you [at
decide a permit is needed, you must reapply, with the understanding the permit request may be denied due to changes it
environmental, regulatory, or modeling conditions.
Invoice Number. 2022PR004019
Permit Number. NCG110042
Person County
Roxboro VUWTP
City of Roxboro
City of Roxboro
PO Box 128
'Roxboro, NC 27573-0128
Payment Options:
Annual Fee Period: 2022-06-01 to 2023-05-31
invoice Date: 05/03/2022
Due Date: 6610212022
Annual Fee: $100.00
5-_(m•ZZ$ (00-&
1. Electronic payment is convenient and quick. To pay by ePayment, type"hftps://deq.nc.gov/epayments/stormwater" into your
browser. If you select eCheck, there will be no convenience fee. The convenience fee for a credit card is 2.65% and the
convenience fee for a debit card is $3.95.
2. To pay by mail, please make your check payable to "DEMIR Stormwater Program' and include the invoice number on the check.
Then, detach the invoice below and write the check number on the invoice. A $25.00 processing fee wiR be charged
for returned checks in accordance with N.C. General Statute 253512.
Remit payments by mail to:
NCDEQ - Division of Energy, Mineral and Land Resources
Attn: Stormwater Billing
512 N. Salisbury Street
1612 Mail Service Center
Raleigh, NC 27699-1612
3. Non-payment of this fee by the payment due date will initiate the permit revocation process.
4. Please include your permit number in all correspondence.
5. Should you have any questions, please contact the Fee Coordinator at aziza.selkane(a)nodencgov or 919.707-3710.
(Return This Portion With Check)
ANNUAL PERMIT INVOICE
Invoice Number. 2022PR004019
Permit Number. NCG110042
Person County
Roxboro VhVTP
City of Roxboro
City of Roxboro
PO Box 128
Roxboro, NC 27573-0128
III III II I II III II II�II�II II III II II II
* 2 0 2 2 P R 0 04 0 1 9
Open
Annual Fee Period: 2022-06-01 to 2023-05-31
invoice Date: 5/3/2022
Due Date: 6/2/2022
Annual Fee: $100.00
Check Number.

D� NPDES Stormwater Permit Contact Update
Request
NPDES Permit Enter your NPDES stormwater permit number or Certificate of Coverage (COC) number.
Number* NCG110042
Begins with NCS. NCG. or NCGNE (no exposure)
Facility Name* Roxboro WWTP
(Used to verify permit number)
Check permit contact information for your permit by running a Stormwater Permit Summary Report.
Guidance for COC holders: Do not enter the General Permit number with all 0's (for example, NCG030000) but
instead your Certificate of Coverge (COC) number.
Check all that Owner Affiliation (Legally Responsible Individual) Update
apply. * Permit Ownership Transfer or Facility Name Change
Delegation of Signature Authority (DOSA)
Permit Contact Update
Billing Contact Update
Facility Contact Update
Other Contact Update
Owner Affiliation (Legally Responsible Individual) Change
Upload a copy of the completed and signed Permit Owner Affiliation Designation Form below. We can begin making
updates with this submittal, but please note that you must mail in the original signed copy to our office, in
accordance with requirements in 40 CFR 122.22.
Staff may contact you to confirm the requested change if this Owner is also associated with other permits in our
system. Changes to Owner Affiliation affect all permits tied to that Owner.
Owner Affiliation Please upload the signed "Permit Owner Affiliation Designation Form"
Change Form NPDES SW Permit Summary Report 11 4 22.pdf 510.81KB
Upload
pdf only
Permit Contact Update
ProwJe new permit contact information

This person should REPLACE the current permit contact.
This person should just be added as another permit contact.
New Contact Name* First and Last Name
Allen Lockhart
E-mail Address*
[e-mail]
Phone No.*
3365830224
Mailing Address *
PO Box 128
Roxboro, NC 27573
Physical Address
It different than mailing address
105 South Lamar Street
Roxboro, NC 27573
Add another permit contact if needed by clicking the'Add' button below
Billing Contact Update
Provide new billing contact information
Note: This person will REPLACE the current billing contact. We can only designate one billing contact in our
permitting database.
New Contact Name* First and Last Name
Derek Clayton
E-mail Address*
Phone No.*
Mailing Address*
Physical Address
[e-mail]
3363226000
PO Box 128
Roxboro, NC 27573
If different than mailing address
902 Cavel-Chub Lake Road
Roxboro, NC 27574
Submitter's Name* Please enter your FIRST and LAST name
Allen Lockhart

Phone Number* Please enter your phone number
3363226010
Any format is fine.
Email Address* Please enter a valid e-mail address
[e-mail]
A confirmation of submission will be e-mailed to this address.
* By checking the box and signing below, I certify that:
I have given true, accurate, and complete information on this form,
I agree that submission of this form is a "transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the
"Uniform Electronic Transactions Act");
I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes
(the "Uniform Electronic Transactions Act');
I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written
signature (except for any uploaded Owner Affiliation Change or Delegation of Signature of Authority forms, which
also must be mailed in with original signature): AND
I intend to electronically sign and submit this Permit Contact Update Request form.
Signature*
Date 11 /8/2022
Questions? Contact [e-mail].

APPENDEX B
LOCATION OF STORM DRAINS AND OUTFALLS
STORM DRAIN NUMBER LOCATION
001 Left side of street twenty yards beyond plant
entrance gate. Discharges to 011.
002 Left side of street ten yards in front of
screening /grit area. Discharges to 012.
003
Left side of street on west side of aeration
basins. Discharges to 013.
004
Right side of street on west side of aeration
basins. Discharges to 013.
005
Left side of street ten yards past digester 1.
Discharges to 014.
006
Right side of street ten yards past digester 1.
Discharges to 014.
007
Approximately ten yards from the northwest
comer of the digester 1. Discharges to 014.
008
Approximately five yards from the northeast
comer of the digester 1. Discharges to 014.
009
Approximately twenty yards up the hill from
the northeast comer of the digester 1.
Discharges to 014.
O10
End of street that runs north of drying bed #
1 in the northwest comer. Discharges to
015.
Oil
On the south side of the dewatering facility.
Discharges to outfall 017.
012
On the west side of the dewatering facility.
Discharges to outfall 016.
018
Southwest of Admin. Bldg., discharges to
outfall 011.
019
South of Admin. Bldg. in parking lot,
discharges to outfall 011.
020
East of Admin. Bldg. between Admin Bldg.
& Oxidation Ditch, discharges to 011.
021
Northeast of Admin. Bldg. between Admin.
Bldg. & Oxidation Ditch. Discharges to
011.
022
Northwest comer of Oxidation Ditch,
discharges to outfa11014.
023
Southwest corner of Oxidation Ditch,
discharges to 011.

024 Southeast corner of Oxidation Ditch,
discharges to 011.
025 Southeast corner of Oxidation Ditch,
discharges to Ol 1.
026 Northeast corner of the Oxidation Ditch,
discharges to 014.
027 Northeast corner of Oxidation Ditch,
discharges to 014.
028
Northwest corner of Oxidation Ditch,
discharges to 014.
029
Northeast corner of Electrical Bldg.,
discharges to 014.
030
Northwest comer of Electrical Bldg.,
discharges to 014.
031
Southwest comer of Digester 1, discharges
to 014.
032
East end of Aeration Basins, discharges to
014.
033
Southeast corner of South Aeration Basin,
discharges to 014.
034
East & across roadway of 033, discharges to
014.
035
East side of Digester 1 at midpoint,
discharges to 014.
OUTFALL NUMBER LOCATION
Oil Approximately twenty yards west of storm
drain # 001. Outfall is for storm drain # 001
and adjacent property. Longitude-
78.997711 Latitude-36.443704
012 Outfall rerouted on 3/24/2020 as part of
WWTP upgrade ... outfall is now located on
SW of the WWTP headworks. 36.44023, -
78.978100 QMR inspections beginning
11/27/2020 from this location.
013 Approximately fifteen yards north of storage
building. Outfall is for storm drains # 003
and 004. Longitude-78.978832
Latitude-36.445511

014 Approximately forty yards northwest of
storm drain # 005. Outfall is for storm drain
#'s 005,006,007,008 and 009. Longitude-
78.977527 Latitude-36.445627
015 Approximately thirty yards west of storm
drain # 010. Outfall is for storm drain # 010
Longitude-78.977453 Latitude-
36.447147
016 Across the street on the west side of
dewatering facility. Outfall is for storm
drain #012 and discharges rainwater from
the west side of dewatering facility gutters.
36.44610-78.97703 W
017 Across the street on the south side of the
dewatering facility. Outfall is for storm
drain #011 and discharges rainwater from
the east side of the dewatering facility
gutters. 36.445620-78.976348W

2.2 - NARRATIVE DESCRIPTION
Wastewater enters the plant and is treated in process tanks using physical, chemical and biological
processes. The treated effluent is then discharged into Marlowe's Creek and is regulated by
NPDES Permit #NC0021024. Flow thru the tanks is accomplished by gravity and tank elevations
are such that the tanks can not overflow. The one exception is the Sludge Digesters. Waste sludge
generated by the treatment process is pumped to these tanks for further processing. Once the
digesters are full, the sludge is either pumped to an onsite dewatering facility or pumped into the
sludge drying lagoons. Ultimately, the sludge will be land applied to farmland.
Since the flow through the wastewater plant is all gravity, there is little to no possibility that
wastewater will overflow the wastewater treatment tanks. Waste activated sludge is pumped to
the digester and there is potential for these tanks to overflow. A high level alarm is installed in
each of these tanks in addition to a sight gauge on the exterior side of the tanks. Filling of the
digesters are closely monitored by plant operators during the wasting events. The observation
manhole for the decanting of the digesters has a high level alarm installed in the event the decant
line becomes plugged. The drain line for the drying lagoons is piped into the aeration basins. The
drain trough at the end of the drying lagoons will contain about 50,000 gallons before overflowing
in the event drain line was to stop up. This trough is checked on a daily basis when the drying
lagoons are in use.
Sodium hypochlorite (Two 1150 gallon tanks filled to a maximum level of 400 gallons each) are
located in a newly repurposed chemical building. Filling of the sodium hypochlorite tanks is
accomplished by pumping from totes located on a delivery truck through a spill protected fill
station on the outside of the building. Before the transfer, a storm drain gate is closed at the storm
drain ( # 002 ). During the transfer, both the delivery driver and a plant operator are in attendance.
In the event of a spill during the fill process the transfer pump will be cut off and the chemical
discharge valve on the end of the hose should be cut off to prevent the discharge of chemicals to
the storm drain
Calcium Thiosulfate, (2-330gallons maximum) is used as the de -chlorinating agent at the Roxboro
W WTP. Approximately 660 gallons will be stored in double lined totes inside the de -chlorination
pump building. Inside spills should they occur would drain toward the sump pit in front of the
screening / grit area and be pumped into the plant influent.
Before the transfer, a storm drain gate is closed on the storm drain (4002). During chemical
delivery, both the delivery driver and a plant operator are in attendance. In the event of a spill
during delivery the transfer pump will be cut off and the chemical discharge valve on the end of
the hose should be cut off to prevent the discharge of chemicals to the storm drain.
A sludge dewatering facility has been constructed at the W WTP and uses polymer in its process.
Polymer is delivered by truck in 255 to 330 gallon totes and unloaded in an area where storm
drains are protected and moved into the building where they will be placed on spill prevention
pallets.

Maintenance oils are stored under a shelter located at Pump Station #1 and do not meet the
thresholds established in Section B. of the general permit. The containers are on a secondary
containment device. Fuel is stored, in minimum quantities, in a secondary containment type fuel
tank. When this tank is filled, both a plant operator and delivery driver are in attendance. Fuel
tank is located in an area protected from stormdrains.
The wastewater plant accepts delivery of hauled septic waste. The septic tanks wastes are
discharged into the plant influent in a designated unloading area. This area is bermed and sloped
to a sump which pumps into the plant influent line. There will be a spill control mat provided and
hanging nearby to place over the storm drain # 001, and a bucket of sand to put around the mat to
help seal the mat off in case of a spill.
The City's Public Utilities sewer vacuum truck unloads in a contained area inside the drying bed.
Operators are instructed to make sure the truck is in the proper position to keep the contents from
spilling outside the designated area.
There have been no significant spills at the wastewater treatment plant. One minor spill occurred
in 2010 and was contained sand and pumped back to the aeration basin using a small sump pump.
It was estimated to be less than one gallon.
Certification that the stormwater outfalls have been evaluated for the presence of non-stormwater
discharges is located in Appendix C.
The Roxboro W WTP is in the process of being upgraded. The treatment plant process is and will
continue to be a gravity system and includes the addition of a new Oxidation Ditch. New storm
drains are noted on the attached drawing with and Appendix B offering a description of each and
its location. Note: With the POTW upgrade Outfall 12 was moved. (see drawing)

3.3 - BW SUMMARY (Best Management Practices)
Stormwater runoff is either from the paved areas or the plant grounds. The paved areas are cleaned
using the City's sweeper truck and/or plant personnel using brooms/blowers on an "as needed"
basis. This BMP removes possible contaminants and prevents them from entering the stormwater
system. The plant grounds are kept cleaned and properly maintained with all the areas being
grassed to control erosion. If spills occur, they will be promptly contained and cleaned up. See
Attachment
Good Housekeeping: Housekeeping duties are discussed daily. Each shift has assigned
housekeeping duties that they are responsible for and the plant has 24-hour coverage.
Preventive Maintenance: Daily inspections of the plant site and inside of buildings are conducted
by the Maintenance Mechanic each workday. The plant has 24-hour coverage by shift operators
who can request maintenance as needed. Dumpsters are emptied once a week or as needed.
Inspections: Each shift has assigned duties and routine checks are made by operations. Daily
plant operations logs are filled out and on file.
Spill Prevention Response: Staff has been trained in spill response, including tracing non -storm
water discharges.
Sediment and Erosion Control: Grass or gravel have been placed throughout the plant/ silt fences
and or straw bales will be used in areas where the ground has been disturbed.
Decanting the digester / Centrifuge centrate
There are two manholes located outside the digester that decant from the digester and centrifuge
centrate flow through, the second manhole was tapped and line was ran from the manhole
approximately 15ft. into the north aeration basin. This line was added as a secondary protection
to the stormwater drains in that area to keep these manholes from overflowing in the event of a
line blockage.

Roxboro WWTP
Stormwater Permit NO. NCG110042
Visual Monitoring Results Summary
Date
Outfall #
Parameters Surveyed
Observations
10/24/2017
011
color, odor, clarity, floating solids, suspended solids, foam, oil sheen
No Discharge... Rainfall prior 1".. V. Rogers
10/24/2017
012
No Discharge... Rainfall prior 1".. V. Rogers
10/24/2017
013
No Discharge... Rainfall prior 1".. V. Rogers
10/24/2017
014
No odor, floating or suspended solids, foam, oil sheen and clear. Clear water flowing form pipe
to Marlowes Creek. Rainfall prior 1" V. Rogers
10/24/2017
015
No Discharge... Rainfall prior 1".. V. Rogers
10/24/2017
016
No Discharge... Rainfall prior 1".. V. Rogers
10/24/2017
0171
No Discharge... Rainfall prior 1".. V. Rogers
3/7/2018
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall
prior 0.5" V. Rogers
3/7/2018
012
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall
prior 0.5" V. Rogers
3/7/2018
013
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall
prior 0.5" V. Rogers
3/7/2018
014
No odor, floating or suspended solids, foam, oil sheen and clear. Light tint, clear. Rainfall
prior 0.5" V. Rogers
3/7/2018
015
No discharge. Rainfall prior 0.5" V. Rogers
3/7/2018
016
No discharge. Rainfall prior 0.5" V. Rogers
3/7/2018
017
No discharge. Rainfall prior 0.5" V. Rogers

Roxboro WWTP
Stormwater Permit NO. NCG110042
Visual Monitoring Results Summary
Date
Outfall #
Parameters Surveyed
Observations
12/2/2018
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.20" V. Rogers
12/2/2018
012
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.20" V. Rogers
12/2/2018
013
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.20" V. Rogers
12/2/2018
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.20" V. Rogers
12/2/2018
015
No discharge. Rainfall prior 0.20" V. Rogers
12/2/2018
016
No discharge. Rainfall prior 0.20" V. Rogers
12/2/2018
017
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.20" V. Rogers
6/7/2019
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.69" V. Rogers
6/7/2019
0121
No discharge. Rainfall prior 0.69" V. Rogers
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
6/7/2019
013
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.69" V. Rogers
6/7/2019
014
No odor, floating or suspended solids, vary slight foam, oil sheen and clear. Rainfall prior 0.69" V. Rogers
6/7/2019
015
No discharge. Rainfall prior 0.69" V. Rogers
6/7/2019
016
No discharge. Rainfall prior 0.69" V. Rogers
6/7/2019
017
No discharge. Rainfall prior 0.69" V. Rogers

Roxboro WWTP
Stormwater Permit NO. NCG110042
Visual Monitoring Results Summary
Date
Outfall #
Parameters Surveyed
Observations
10/14/2019
011
No discharge. Rainfall prior .32" V. Rogers
10/14/2019
012
No discharge. Rainfall prior .32" V. Rogers
10/14/2019
013
No discharge. Rainfall prior .32" V. Rogers
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
10/14/2019
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.32" V. Rogers
10/14/2019
015
No discharge. Rainfall prior .32" V. Rogers
10/14/2019
016
No discharge. Rainfall rior .32" V. Rogers
10/14/2019
017
No discharge. Rainfall rior .32" V. Rogers
3/23/2020
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.50" V. Rogers
3/23/2020
0121
Construction in the area and silt fences in place... No odor, colo—brown, clarity = 4, no floating solids,
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
suspended solids = 4, no foam, no oil sheen. Rainfall prior 0.50" V. Rogers
3/23/2020
013
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.50" V. Rogers
3/23/2020
014
Construction in the area and sift fences In place... No odor, color— brown, clarity = 5, no floating solids,
suspended soilds = 5, no foam, no oll sheen. Rainfall prior 0.50" V. Rogers
3/23/2020
015
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.50" V. Rogers
3/23/2020
0161
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.50" V. Rogers
3/23/2020
0171
No discharge. Rainfall prior 0.50" V. Rogers

Roxboro WWTP
Stormwater Permit NO. NCG110042
Visual Monitoring Results Summary
Date
Outfall #
Parameters Surveyed
Observations
11/27/2020
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.37" V. Rogers
11/27/2020
012
No discharge. Rainfall prior 0.37' V. Rogers
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
11/27/2020
013
No discharge. Rainfall prior 0.37" V. Rogers
11/27/2020
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.37" V. Rogers
11/27/2020
015
No discharge. Rainfall prior 0.37" V. Rogers
11/27/2020
016
No discharge. Rainfall prior 0.37" V. Rogers
11/27/2020
0171
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.37" V. Rogers
4/25/2021
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.375" V Rogers
4/25/2021
012
color, Odor, Clarity, floating solids, suspended solids, foam, oil sheen
No discharge. Rainfall prior 0.375" V. Rogers
4/25/2021
013
No odor, minimal floating or suspended solids, No foam, oil sheen. Rainfall prior 0.375 V. Rogers
4/25/2021
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.375" V. Rogers
4/25/2021
0151
No discharge. Rainfall prior 0.375" V. Rogers
4/25/2021
016
No discharge. Rainfall prior 0.375" V. Rogers
4/25/2021
017
No discharge. Rainfall prior 0.375" V. Rogers

12/12/2021
011
No discharge. Rainfall prior 0.5" V. Rogers
12/12/2021
012
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
No discharge. Rainfall prior 0.5" V. Rogers
12/12/2021
013
No discharge. Rainfall prior 0.5" V. Rogers
12/12/2021
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.5" V. Rogers
12/12/2021
015
No discharge. Rainfall prior 0.5" V. Rogers
12/12/2021
016
No discharge. Rainfall prior 0.5" V. Rogers
12/12/2021
017
No discharge. Rainfall prior 0.5" V. Rogers
5/2/2022
011
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.375' V. Rogers
5/2/2022
012
No discharge. Rainfall prior 0.375" V. Rogers
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
5/2/2022
013
No discharge. Rainfall prior 0.375" V. Rogers
5/2/2022
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.375" V. Rogers
5/2/2022
015
No discharge. Rainfall prior 0.375' V. Rogers
5/2/2022
016
No discharge. Rainfall prior 0.375" V. Rogers
5/2/2022
017
No discharge. Rainfall prior 0.375' V. Rogers

9/26/2022
011
No discharge. Rainfall prior 0.35" V. Rogers
9/26/2022
012
color, odor, clarity, floating solids,
suspended solids, foam, oil sheen
No discharge. Rainfall prior 0.35" V. Rogers
9/26/2022
013
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.35" V. Rogers
9/26/2022
014
No odor, floating or suspended solids, foam, oil sheen and clear. Rainfall prior 0.35" V. Rogers
9/26/2022
15
No discharge. Rainfall prior 0.35" V. Rogers
9/26/2022
16
No discharge. Rainfall prior 0.35" V. Rogers
9/26/2022
17
No discharge. Rainfall prior 0.35" V. Rogers

9 MOS'Ii' F
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CITY OF RORBORO
Stormwater Permit Mapping PUBLIC SERVICES DEPARTMENT
779 MOUNTAIN ROAD ROXBORO, NC 27573
[phone]ph(336)503-05881ac
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