NCS000540_Self Audit_20220831

MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
PROGRAM AUDIT REPORT
NPDES PERMIT NO. NCS000540
MOORESVILLE, NORTH CAROLINA
P.O. Box 878
Mooresville, NC 228115
Audit Date: August 10, 2022
Report Date: August 16, 2022
North Carolina Department of Environmental Quality
Division of Energy, Mineral & Land Resources Stormwater Program
512 N. Salisbury Street, 9th floor
1612 Mail Service Center
Raleigh, NC 27699-1612
REGFIVE
AUG 12022
LAND QUALITY SECTION
ASHFVBIF

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
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Audit Date: August 10, 2022

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Construction Site Runoff Controls ........................
Post -Construction Site Runoff Controls ...............
Total Maximum Daily Loads (TMDLs)...................
Appendix A: Supporting Documents
Appendix B: Photograph Log
DISCLAIMER
This audit consists of an evaluation of program compliance with the issued permit and implementation of
the approved Stormwater Management Plan. This audit report does not include a review of all program
components, and program deficiencies in addition to those noted may be present. The permittee is
required to assess program progress and permit compliance, and to implement the approved Stormwater
Management Plan in accordance with the issued permit.
LAND QUALITY SECTI01'
ASHFIIIU. F
Audit Date: August 10, 2022

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
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Audit Date: August 10, 2022 iii

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCSOOOS40
Audit Details
Audit ID Number:
Audit Date(s):
NC5000540_Mooresville MS4 Audit_20220810
August 10, 2022
Minimum Control Measures Evaluated:
❑ Program Implementation, Documentation & Assessment
❑ Public Education & Outreach
❑ Public Involvement & Participation
❑ Illicit Discharge Detection & Elimination
® Construction Site Runoff Controls — No delegated Sediment and Erosion Control Program
❑ Construction Site Runoff Controls — Delegated Sediment and Erosion Control Program
M Post -Construction Site Runoff Controls
❑ Pollution Prevention and Good Housekeeping for Municipal Operations
® Total Maximum Daily Loads (TMDLs)
Field Site Visits:
❑ Municipal Facilities. Number visited: Choose an item.
❑ MS4 Outfalls. Number visited: Choose an item.
❑ Construction Sites. Number visited: Choose an item.
❑ Post -Construction Stormwater Runoff Controls. Number visited: Choose an item.
❑ Other: Number visited: Choose an item.
❑ Other: Number visited: Choose an item.
Inspector(s) Conducting Audit
Name, Title
Organization
Marissa Meltzer, Stormwater Program Specialist
Town of Mooresville
Nick Lynch, Stormwater Maintenance Supervisor
Town of Mooresville
Audit Report Author: Marissa Meltzer, Stormwater Program
Date:
Specialist
i
B / a N
Signature _A
Audit Report Author:
Date
Signature
LAND Q aHLF\in.SF-C71OV
Audit Date(s): August 10, 2022 Page 1 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Permittee Information
MS4 Permittee Name:
Town of Mooresville
Permit Effective Date:
November 2011
Permit Expiration Date:
August 2021
City, State, ZIP: P.O. Box 878
Mooresville, NC 28115
Date of Last MS4 Inspection/Audit:
June 8, 2022
Co-permittee(s), if applicable:
Permit Owner of Record:
Randall Hemann, Town Manager
Primary MS4 Representatives Participating in Audit
Name, Title
Organization
Marissa Meltzer, Stormwater Program
Specialist
Town of Mooresville
Nick Lynch, Stormwater Maintenance
Supervisor
Town of Mooresville
MS4 Receiving Waters
Waterbodv
Classification
Impairments
Byers Creek
WS-IV, CA
None
Known
Davidson Creek
WS-IV, CA
None Known
McCrary Creek
WS-IV, B; CA
None Known
Reeds Creek
WS-IV, B; CA
None
Known
Work Creek
WS-IV, B; CA
None Known
Back Creek
WS-II, HQW
None Known
Dye Creek
C
None
Known
Rocky River
C
Benthos Poor
South Fork Withrow Creek
C
None Known
West Branch Rocky River
C
None Known
Audit Date(s): August 10, 2022 Page 2 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Supporting Documents
Item
Number
Document Title
When Provided
(Prior to/During/After)
I
Interlocal Agreement Between Town of Mooresville & Iredell County
Prior To (during DEQ Audit)
2
Town of Mooresville Unified Development Ordinance
During
3
Post Construction and Illicit Discharge and Connection Ordinance
During
4
Town of Mooresville Land Development Standards
During
5
Town of Mooresville Administrative Manual
During
6
Sketch Plan Checklist, Concept Plan Checklist, Site Plan Checklist
During
7
Private SCM Inventory
During
8
Town SCM Inventory & Inspection Log
Prior To (during DEQ Audit)
9
SCM Inspection Processes Sheet
During
10
Enforcement Spreadsheet
During
RECEIVE
P
LAND QUALITY 5ECTIO
HEUII.( P
Audit Date(s): August 10, 2022 Page 3 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NC5000540
Construction Site Runoff Controls
Staff Interviewed:
Marissa Meltzer, Stormwater Program Specialist
(Name, Title, Role)
Nick Lynch, Stormwater Maintenance Supervisor
Program Delegation Status:
❑ The permittee has a delegated Sediment and Erosion Control Program and implements the North Carolina
Sedimentation Pollution Control Act (SPCA) of 1973 components of this minimum measure (complete the permit
citation and SPCA citation sections).
N The permittee does not have a delegated Sediment and Erosion Control Program and relies on DEMLR to comply
with the North Carolina Sedimentation Pollution Control Act (SPCA) of 1973 components of this minimum measure
(complete only the permit citation section).
Permit Citation Program Requirement Status supporting
Doc No.
II.E.3 Construction
Site Runoff Controls The permittee provides and promotes a means for the public to notify the
]NPDES Permit No. appropriate authorities of observed erosion and sedimentation problems (e.g., Yes 1
NCS000435] promoting the existence of the DEQ DEMLR "Stop Mud" hotline).
Comments (Describe how provided and promoted)
The Town of Mooresville does not have a delegated Sediment and Erosion Control Program. The Town relies on DEMLR to comply
with the North Carolina Sedimentation Pollution Control Act (SPCA) of 1973. An interlocal agreement has been in place with Iredell
County since 2009 to conduct erosion and sediment control inspections within the limits of the Town of Mooresville.
The Town of Mooresville website advertises the Stop Mud hotline and contact information for Iredell County Erosion Control. Town
staff frequently receives call about construction site runoff and will investigate accordingly to determine if the concern can be
pursued as an illicit discharge. Resident complaints are logged as service requests and are passed on to Iredell County for their
investigation and enforcement.
SPCA Citation
Delegated Program Requirement
Status
supporting
Doc No.
113A-60 Local
The permittee has adopted an ordinance or other regulatory mechanism to enforce
Not
erosion and
the erosion and sedimentation control program.
Applicable
sedimentation
control programs (a)
If yes, the ordinance meets or exceeds the minimum requirements of the
Not
SPCA.
Applicable
If yes, the ordinance applies throughout the corporate limits of the permittee.
Not
[Permit Part I.D]
Applicable
Comments (Provide regulatory mechanism reference or Supporting Documentation number)
Audit Date(s): August 10, 2022 Page 4 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Construction Site Runoff Controls
§ 113A-60 Local
erosion and
The permittee collects a fee paid by each person who submits an erosion and
Not
sedimentation
sedimentation control plan.
Applicable
control programs (d)
Comments (indicate the fee amount, If applicable)
113A-60 Local
Has any person initiated a land -disturbing activity (within the permittee's
erosion and
jurisdiction) for which an erosion and sedimentation control plan is required in the
Not
sedimentation
absence of an approved plan?
Applicable
control programs (e)
If yes, the permittee has notified the North Carolina Sedimentation Control
Not
Commission of all such cases.
Applicable
Has the permittee determined that a person engaged in a land -disturbing activity
Not
has failed to comply with an approved erosion and sedimentation control plan?
Applicable
If yes, has the permittee referred any such matters to the North Carolina
Not
Sedimentation Control Commission for inspection and enforcement?
Applicable
Comments
113A-61 Local
The permittee reviews each erosion and sedimentation control plan submitted to
approval of erosion
them and notifies the person submitting the plan that it has been approved,
Not
Applicable
and sedimentation
approved with modification, or disapproved within 30 days of receipt.
control plans
The permittee only approves an erosion and sedimentation control plan upon
Not
determining that it complies with all applicable State and local regulations.
Applicable
The permittee has disapproved of an erosion and sedimentation control plan in
Not
order to protect riparian buffers along surface waters.
Applicable
If yes, the permittee notified the Director of the Division of Energy,
Not
Mineral, and Land Resources within 10 days of the disapproval.
Applicable
Comments
Audit Date(s): August 10, 2022 Page 5 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Construction Site Runoff Controls
§ 113A-61.1
Inspection of land-
The certificate of approval of each erosion and sedimentation control plan
Not
disturbing activity;
approved by the permittee includes a notice of the right to inspect.
Applicable
notice of violation
(a)
The permittee provides for inspection of land -disturbing activities to ensure
compliance with the SPCA and to determine whether the measures required in an
Not
Applicable
erosion and sedimentation control plan are effective.
Comments
§ 113A-61.1
When the permittee determines that a person engaged in land -disturbing activity
Inspection of land-
has failed to comply with the SPCA, the Permittee immediately issues a notice of
Not
Applicable
disturbing activity;
violation upon that person.
notice of violation
Each notice of violation issued by the permittee specifies the date by which the
Not
(c)
person must comply.
Applicable
---
Each notice of violation issued by the permittee informs the person of the actions
Not
that need to be taken to comply.
Applicable
Comments
113A-64 Penalties
Does the permittee issue civil penalties as part of the erosion and sedimentation
Not
program?
Applicable
Comments (indicate when/why a civil penalty is issued, and the amount, if applicable)
Audit Date(s): August 10, 2022 Page 6 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Post -Construction Site Runoff Controls
Staff Interviewed:
(Name, Title, Role)
Marissa Meltzer, Stormwater Program Specialist
Nick Lynch, Stormwater Maintenance Supervisor
LAND Q SHLF�IIISF�TI01
Audit Date(s): August 10, 2022 Page 7 of 14

MS4 Permit Audit Report
Mooresville, INC: NPDES Permit No. NCS000540
Post -Construction Site Runoff Controls
Implementation (check all that apply):
® The permittee implements the components of this minimum measure.
❑ The permittee relies upon another entity to implement the components of this minimum measure: name of entity
® The permittee implements the following deemed -compliant program(s), which meet NPDES MS4 post -construction
requirements for the areas where implemented and in compliance with the specific program requirements as provided in 15A
NCAC and noted below (Complete Session Law 2006-246 section below):
❑ Water Supply Watershed I (WS-1) —15A NCAC 2B .0212
® Water Supply Watershed II (WS-II) —15A NCAC 2B .0214
❑ Water Supply Watershed III (WS-III) —15A NCAC 213.0215
® Water Supply Watershed IV (WS-IV) — 15A NCAC 2B.0216
❑ Freshwater High Quality Waters (HOW) —15A NCAC 2H .1006
❑ Freshwater Outstanding Resource Waters (ORW) —15A NCAC 2H .1007
❑ Neuse River Basin Nutrient Sensitive (NSW) Management Strategy —15A NCAC 213 .0235
❑ Tar -Pamlico River Basin Nutrient Sensitive (NSW) Management Strategy —15A NCAC 2B .0258
❑ Randleman Lake Water Supply Watershed Nutrient Management Strategy-15A NCAC 2B .0251
❑ Universal Stormwater Management Program — 15A NCAC 2H .1020
Ordinance(s) (check all that apply):
The permittee utilizes the following ordinances and/or regulatory authority to fulfill post construction minimum measure program
requirements throughout the MS4 permitted area (check all that apply):
® DEQ model ordinance
® MS4 designed post -construction practices that meet or exceed 15A NCAC 02H .1000.
❑ DEQ approved comprehensive watershed plan
® DEQ approved ordinance for a deemed -compliant Program (see list above)
Instructions:
For MS4s not implementing a S.L. 2006-246 deemed -compliant program, complete only the Permit Citation section below.
For MS4s implementing a S.L. 2006-246 deemed -compliant program, complete the Session Law 2006-246 section below. if the MS4
does not implement a deemed -compliant program throughout the entire M54 permitted area, then complete the Permit Citation
section below for the permitted orea(s) not covered under the S.L. 1006-246 deemed -compliant program.
Session Law 2006- program Requirement Status Supporting
246 Doc No.
Audit Date(s): August 10, 2022 Page 8 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Post -Construction Site Runoff Controls
Deemed -Compliant
The permittee implements deemed -compliant Program requirements in
Program(s)
accordance with the applicable i5A NCAC rules.
Yes
2
The permittee implements deemed -compliant Program requirements throughout
the entire MS4 area (If not, also complete the Permit Citation section below.)
Yes
2
The permittee applies deemed -compliant Program requirements to all federal,
state and local government projects within the permitted M54 area who do not
Not
have their own NPDES stormwater permit.
Applicable
The permittee included deemed -compliant Program reporting in their MS4 Annual
Reports.
Not
Applicable
The permittee included deemed -compliant Program implementation in their
stormwater Management Plan.
Not
Applicable
Comments
Deemed -Compliant Programs (Water Supply Watersheds WS-II & WS-IV) are enforced through the Town of Mooresville Unified
Development Ordinance. The Water Supply Watershed program was audited by NCDEQ in April 2022 with no required changes to
this implementation.
*Remaining points are not applicable as current permit does not require annual reporting for deemed -compliant programs or
SWMP implementation.
Permit Citation
Program Requirement
Status
supporting
Doc No.
II.F.2.a
The permittee maintained an ordinance or other regulatory mechanism designed
Legal Authority
to meet the objectives of the Post -Construction Site Runoff Controls Stormwater
Yes
3
Management Program.
If yes, the ordinance applies throughout the corporate limits of the permittee
(Verify permit coverage area listed in Part LD of permit and modify
Yes
3
accordingly).
The permittee has the authority to review designs and proposals for new
development and redevelopment to determine whether adequate stormwater
Yes
3
control measures will be installed, implemented, and maintained.
The permittee has the authority to request information such as stormwater plans,
inspection reports, monitoring results, and other information deemed necessary to
evaluate compliance with the Post -Construction stormwater Management
Yes
3
Program.
The permittee has the authority to enter private property for the purpose of
inspecting at reasonable times any facilities, equipment, practices, or operations
Yes
3
related to stormwater discharges.
Comments (If the permittee relies upon another entity, specifically note the legal authority that allows that entity to Implement
the program within the MS4 area)
*For corporate limit question: Sec 25-5(d) of Ordinance: "The provisions of this chapter shall apply within the areas designated on
the Town of Mooresville Annexation Map, as amended"
The permittee utilizes strategies which include SCMs appropriate for W619194.
Yes
4
Audit Date(s): August 10, 2022
011ALI(YSF- T'O'
4SHFVI 4Page 9 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Post -Construction Site Runoff Controls
Stormwater Control
Measures (SCMs)
SCMs comply with 15A NCAC 02H .1000.
Yes
4
Comments
The Town's Land Development Standards require SCMs to be designed and constructed in compliance with the latest version of
NCDENR Stormwater Design Manual. As indicated by NCDEQ website, the Stormwater design Manual is compatible with the
Minimum Design Criteria that are codified in the stormwater rules.
II.F.2.c
The permittee conducted site plan reviews of all new development and
Plan Reviews
redeveloped sites that disturb greater than or equal to one acre (including sites
Yes
4, 5, 6
that disturb less than one acre that are part of a larger common plan of
development or sale).
If yes, the site plan reviews addressed how the project applicant meets the
Yes
4, 5, 6
performance standards.
If yes, the site plan reviews addressed how the project will ensure long-term
Yes
4, 5, 6
maintenance.
Comments
The Town utilizes Plan Review Checklists and enforces CO/Plat requirements. SCM's require as built certification by PE, final
inspection, and an operation and maintenance agreement to be in place prior to CO.
II.F.2.d
The permittee maintained an inventory of projects with post -construction
Inventory of Projects
structural stormwater control measures installed and implemented at new
Yes
7
development and redeveloped sites.
The inventory included both public and private sector sites located within the
permittee's corporate limits that are covered by its post -construction ordinance
Yes
8
requirements.
Comments
Inventory of projects with post -construction SCM's is kept on the Stormwater OneDrive. SCM's are also mapped by parcel on ArcGIS
Online. Town maintained post- construction SCM's are kept in a separate database and are also mapped on ArcGIS Online.
II.F.2.e
The permittee provided mechanisms such as recorded deed restrictions and
Deed Restrictions
protective covenants that ensure development activities will maintain the project
Yes
3
and Protective
consistent with approved plans.
Covenants
Comments
Sec 25-24(a) of Post Construction Ordinance
"Deed recordation and indications on plat. The applicable operations and maintenance agreement, conservation easement, or
dedication and acceptance into public maintenance (whichever is applicable) pertaining to every structural BMP shall be referenced
on the final plat and shall be recorded with the county register of deeds upon final plat approval. If no subdivision plat is recorded
for the site, then the operations and maintenance agreement, conservation easement, or dedication and acceptance into public
maintenance, whichever is applicable shall be recorded with the county register of deeds so as to appear in the chain of title of all
subsequent purchasers under generally accepted searching principles."
II.F.2.f
The permittee implemented or required an operation and maintenance plan for
the long-term operation of the SCMs required by the program.
Yes
3
Audit Date(s): August 10, 2022 Page 10 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Post -Construction Site Runoff Controls
Mechanism to
The operation and maintenance plan required the owner of each SCM to perform
Require Long-term
and maintain a record of annual inspections of each SCM.
Yes
3
Operation and
Maintenance
Annual inspection of permitted structural SCMs are required to be performed by a
qualified professional.
Yes
3
Comments
See Sec. 25-19 and 25-20 of Post Construction Ordinance. 0&M agreements are required for all structural SCM's and are binding on
all subsequent landowners. 0&M outlines maintenance requirements and inspection frequency. Annual inspections are required
for all SCM's and are due to the Stormwater Program Specialist by March 31" of each calendar year. Inspection must be completed
by a qualified professional (engineer, surveyor, landscape architect or an individual with SCM Inspection and Maintenance
Certification from NC State.
II.F.2.¢
The permittee conducted and documented inspections of each project site covered
Inspections of
under performance standards, at least one time during the permit term (Verify this
Not
Structural
is o permit condition in Part II.F.2.g of permit and modify accordingly).
Applicable
Stormwater Control
Before issuing a certificate of occupancy or temporary certificate of occupancy, the
Measures
permittee conducted a post -construction inspection to verify that the permittee's
performance standards have been met or a bond Is in place to guarantee
Not
Applicable
completion (Verify this is a permit condition in Part II.17.2.9 of permit and modify
accordingly.
The permittee developed and Implemented a written inspection program for SCMs
installed pursuant to the post -construction program(Verify this is a permit
Partial
9
condition in Part II.F.2.g of permit and modify accordingly.
The permittee documented and maintained records of inspections.
Yes
7
The permittee documented and maintained records of enforcement actions.
Yes
10
Comments
Written Process and Requirements for Annual Inspections has been effective since 2018. All annual inspections are logged in an
Excel database. Enforcement actions are also logged in the Excel Database to track NOV's and repeat offenses.
II.F.2.h
The permittee made available through paper or electronic means, ordinances,
Educational
post -construction requirements, design standards checklists, and other materials
Materials and
appropriate for developers.
Training for
Note: New materials may be developed by the permittee, or the permittee may use
Yes
Developers
materials adopted from other programs and adapted to the permittee's new
development and redevelopment program.
Comments (if the permittee has adopted materials from other programs, indicate here which materials they are using)
Post Construction Ordinance, Land Development Standards, Land Development Process, Checklists, O&M Agreements, Inspection
Forms and Stormwater Facility Maintenance Guide on Town Website.a
LAND QUAUI sECTV'
ASI�Ftt'I I''�'
Audit Date(s): August 10, 2022 Page 11 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Post -Construction Site Runoff Controls
II.F_2.i Enforcement
The permittee tracked the issuance of notices of violation and enforcement
Yes
10
actions.
If yes, the tracking mechanism included the ability to identify chronic violators
for initiation of actions to reduce noncompliance.
Yes
10
Comments
Violations and enforcement actions are logged in an excel database on the Stormwater OneDrive
II.F3.b
7Theppeurmittee fully complies with post construction program requirements on itsNew
Yes
8
Developmentcly
funded construction projects.
Comments
Town projects are held to the same requirements as private development. There is an inventory of Town maintained SCMs that
were installed for compliance with Post -Construction requirements. SCM's are inspected on the schedules recommended by the
Stormwater Design Manual. As-builts, past inspection logs and maintenance records are saved
II.F3.c
Does the MS4 have areas draining to Nutrient Sensitive Waters (NSW) pursuant to
Nutrient Sensitive
15A NCAC 02H .0150?
No
---
Waters
If yes, does the permittee use SCMs that reduce nutrient loading in order to
Not
meet local program requirements.
Applicable
If yes, does the permittee also still incorporate the stormwater controls
Not
required for the project's density level.
Applicable
If yes, does the permittee also require documentation where it is not feasible to
Not
use SCMs that reduce nutrient loading.
Applicable
Comments (Provide reference for local requirements)
The Town of Mooresville does not have any areas draining to Nutrient Sensitive Waters.
II.F3.d
The permittee ensured that the design volumes of SCMs take into account the
Design Volume
runoff at build out from all surfaces draining to the system.
Yes
4
Where "streets" convey stormwater, the permittee designed SCMs to be sized to
treat and control stormwater runoff from all surfaces draining to the SCM including
Yes
4
streets, driveways, and other impervious surfaces.
Comments
The Town ensures design volumes of SCMs take into account the runoff at build out from all surfaces draining to the system and
ensures all streets. Driveways and other impervious surfaces are considered in the design size. See Land Development Standards.
Audit Date(s): August 10, 2022 Page 12 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Total Maximum Daily Loads (TMDLs)
Staff Interviewed:
Marissa Meltzer, Stormwater Program Specialist
(Name, Title, Role)
Program Status:
❑ The permittee is not subject to an approved TMDL (skip the rest of this section).
® The permittee is subject to an approved TMDL for: Rocky River (13-17) is subject to a TMDL for fecal coliform was approved
in September 2002.
There ❑ is ® is not a Waste Load Allocation (WLA) in the approved TMDL (If there is o WLA, then complete items II.H.1-5
below. If there is not a WLA, skip to item II.14.6 below)
Permit Citation Program Requirement Status
supJNo.
Do
II.H.3 TMDLs Within 12 months of final TMDL approval, the permittee's annual reports included
a description of existing programs, controls, partnerships, projects and strategies to Not
Applicable
address impaired waters.
Within 12 months of final TMDL approval, the permittee's annual reports provided
a brief explanation as to how the programs, controls, partnerships, projects and Not
Applicable
strategies address impaired waters.
Comments
ILH.4 TMDLs
Within 24 months of final TMDL approval, the permittee's annual reports included
an assessment of whether additional structural and/or non-structural BMPs are
Not
necessary to address impaired waters.
Applicable
Within 24 months of final TMDL approval, the permittee's annual reports included
a brief explanation as to how the programs, controls, partnerships, projects and
Not
strategies address impaired waters.
Applicable
Comments"
I_ANl7 QUALM `l Sh! ,Tldt
AfiII(�i,ll
II.H.5 TMDLs
Within 36 months of final TMDL approval, the permittee's annual reports included
a description of activities expected to occur and when activities are expected to
Not
Applicable
occur.
Audit Date(s): August 10, 2022 Page 13 of 14

MS4 Permit Audit Report
Mooresville, NC: NPDES Permit No. NCS000540
Total Maximum Daily Loads (TMDLs)
Comments
II.11.6 TMDLs
If there is no Waste Load Allocation in the approved TMDL, the permittee
evaluated strategies and tailored and/or expanded BMPs within the scope of the
six minimum measures to enhance water quality recovery strategies in the
Yes
---
watershed(s) to which the TMDL applies.
The permittee described strategies and tailored and/or expanded BMPS in their
Partial
---
Stormwater Management Plan and annual reports
Comments
The Town of Mooresville takes measures to address the TMDL for fecal coliform in Rocky River. The Rocky River Wastewater
Treatment operates under a NCGI10000 permit and has an updated Stormwater Pollution Prevention Plan for the facility. The
SWPPP outlines the layout of the facility, outfall monitoring information and the best management practices used to limit exposure.
Pet waste was added to the list of Target Pollutants in hopes to mitigate Fecal Coliform in Rocky River and educational materials are
to be distributed to appropriate audiences.
Audit Date(s): August 10, 2022 Page 14 of 14