NCS000466_Hillsborough 2020 Annual Report Narrative_20200909

Town of Hillsborough

NPDES Phase II
Stormwater Management Program

ANNUAL REPORT

Fiscal Year 2020
Stormwater Wetland at Gold Park
Town of Hillsborough Stormwater Management Program
NPDES Phase II Annual Report Fiscal Year 2020

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TABLE OF CONTENTS

INTRODUCTION ........................................................................................................ 1
1. Storm Sewer System Information ............................................................... 2
1.1 Population Served ........................................................................................ 2
1.2 Growth Rate ................................................................................................. 2
1.3 Jurisdictional Area ........................................................................................ 2
1.4 MS4 Conveyance System ............................................................................ 2
1.5 Land Use Composition ................................................................................. 2
1.6 TMDL Identification ...................................................................................... 3
2. Receiving Streams ..................................................................................... 3
3. Existing Water Quality Programs ............................................................... 3
3.1 Local Programs ............................................................................................ 3
3.2 State Programs ............................................................................................ 4
4. Permitting Information ................................................................................ 4
4.1 Responsible Party Contact List .................................................................... 4
4.2 Signing Official ............................................................................................. 4
5. Co-Permit Status Information ..................................................................... 4
6. Reliance on Another Entity ......................................................................... 5
6.1 Contact Information ...................................................................................... 5
6.2 Legal Agreement .......................................................................................... 5
7. Stormwater Management Program Plan .................................................... 5
7.1 Public Education and Outreach .................................................................... 5
7.2 Public Involvement and Participation ............................................................ 8
7.3 Illicit Discharge Detection and Elimination .................................................. 10
7.4 Construction-Site Stormwater Runoff Control ............................................. 12
7.5 Post-Construction Stormwater Management .............................................. 14
7.6 Pollution Prevention/Good Housekeeping for Municipal Operations ........... 16

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NPDES Phase II Annual Report Fiscal Year 2020

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INTRODUCTION
Why Care About Stormwater?
Adding impervious surface decreases the amount of stormwater that infiltrates into the
ground. This increases the amount and velocity of stormwater runoff. This can cause
accelerated erosion and downstream flooding. In addition, as stormwater flows across
impervious surfaces, it picks up various pollutants. These include excess nutrients, oil and
grease, bacteria and sediment. Polluted stormwater flows down storm drains and ditches
where it is discharged, untreated, into local streams, rivers, and lakes. Stormwater runoff
pollution causes adverse impacts to aquatic ecosystems, poses human health risks, and
can greatly increase the cost of treating drinking water.
Program Background
In 1972, the National Pollutant Discharge Elimination System (NPDES) program was
established under the authority of the Federal Clean Water Act. Phase I of the NPDES
Stormwater program was established in 1990. It required NPDES permit coverage for
municipalities with populations of 100,000 or more.
Phase II of the NPDES Stormwater program was signed into law in December 1999. The
Phase II program extended permit coverage to smaller (< 100,000 pop.) communities and
public entities that own or operate a municipal separate storm sewer system (MS4). It
required these smaller communities to develop a stormwater program and obtain an
NPDES permit for stormwater discharges.
In North Carolina, the Department of Environmental Quality (NCDEQ) administers the
NPDES Stormwater program. NCDEQ issued the Town of Hillsborough’s (Town) initial
Phase II permit, on October 1, 2005. The permit required the Town to develop, implement,
and enforce a stormwater program designed to reduce the discharge of pollutants from
the MS4 to the maximum extent practicable. The program was implemented in phases
over five years of the initial permit. Pursuant to the permit the stormwater program included
the following six minimum measures or best management practices (BMPs):
1. Public education and outreach on stormwater impacts;
2. Public involvement/participation;
3. Illicit discharge detection and elimination;
4. Construction site stormwater runoff control (Erosion Control);
5. Post-construction stormwater management for new development and
redevelopment;
6. Pollution prevention/good housekeeping for municipal operations.
The Town’s current permit, Number NCS000466, was issued on February 27, 2017. This
annual report reflects reporting requirements pursuant to the permit. Numbers reported
are for the fiscal year 2019-2020, which runs from July 1, 2019 to June 30, 2020 and is
referred to hereafter as FY2020.
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1. Storm Sewer System Information
1.1 Population Served
Estimated population served ........................ 7,4831
1.2 Growth Rate
Estimated increase 2010-2018 .................... 22.9%2
Estimated annual increase 2010-2018 ......... 2.87%
1.3 Jurisdictional Area
Town Limits ................................................. 5.6 sq. mi
ETJ .............................................................. 3.5 sq. mi.
1.4 MS4 Conveyance System
Due to the age of the town, MS4 consists of a variety of stormwater conveyances
and components. These range from typical curb and gutter systems conveyed by
concrete pipes to simple sheet flow. The predominate conveyance components
include grass lined swales and vegetated drainage ditches with various pipes and
culverts. There are also various detention systems within the Town’s jurisdiction,
however these are on private property.
MS4 system components are periodically inspected to ensure proper function. The
North Carolina Department of Transportation (NCDOT) maintains systems within
state road rights-of-way. Systems located on private property, including detention
facilities and other engineered stormwater controls, are maintained by the owner.
1.5 Land Use Composition
Estimated Land Use3
Residential ................................................... 35%
Commercial ................................................. 30%
Industrial ...................................................... 5%
Open Space................................................. 30%
Total ............................................................ 100%

1 July 2018 Data from North Carolina Office of Budget and Management, State Demographics Data,
http://www.osbm.state.nc.us/.
2 Percentage increase from 2010 to 2018 (North Carolina Office of Budget and Management, State
Demographics Data, http://www.osbm.state.nc.us/.)
3 Land use percentages were estimated from the Town of Hillsborough Land Use GIS database. Area of
parcels for each designated land use type were summed and calculated for relative percentage of the
planning jurisdictional area.
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1.6 TMDL Identification
Currently, no streams flowing into or out of the Town of Hillsborough’s jurisdiction
have an associated Total Maximum Daily Load.
2. Receiving Streams
The Town of Hillsborough lies entirely within the Falls Lake Watershed, which is part
of the Neuse River Basin. Specifically, the Town drains to the Eno River. Specific
receiving waters are listed below.
Receiving
Stream Description Classification Index No.
Eno River
(Corporation
Lake,
Lake Ben
Johnston)
From a point 0.4 mile upstream
of Dry Run to dam at Lake Ben
Johnston (Orange County water
supply intake & Town of
Hillsborough water supply
intake)
WS-II; HQW,
CA, NSW
27-2-(3.5)
Eno River From dam at Lake Ben
Johnston to Orange County SR
1561
C; NSW, N 27-2-(7)
Seven Mile
Creek
From a point 0.4 mile upstream
of I-85 to Lake Ben Johnston,
Eno River
WS-II; HQW,
CA, NSW
27-2-6-(1.5)
Rocky Run From a point 0.5 mile upstream
of I-85 to Seven Mile Creek
WS-II; HQW,
NSW
27-2-6-2-(2)
Cates Creek From source to Eno River C; NSW 27-2-8
Strouds Creek From source to Eno River C; NSW 27-2-9
Stony Creek From source to a point 0.4 mile
upstream of Orange County SR
1710
C; NSW 27-2-13-(1)
3. Existing Water Quality Programs
3.1 Local Programs
The following programs and ordinances are being implemented within the Town of
Hillsborough’s jurisdiction.
Unified Development Ordinance (UDO) – regulates overall development and land
use. Specific water quality aspects include local stream buffer rules and post
construction stormwater requirements, including nutrient limits.
Flood Damage Prevention – through its UDO the Town protects water quality by
preventing new development within flood hazard zones.
Local Nutrient Sensitive Waters (NSW) Strategy - through its UDO the Town
adopted stormwater requirements for new development to meet the Falls Lake
Nutrient Management Strategy (Falls Lake rules).
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Delegated Erosion and Sediment Control Program - as noted in Section 6, the
Town relies on Orange County to conduct an erosion control program. Orange
County has local delegated authority from the state.
3.2 State Programs
State programs, including the Neuse, Falls Lake, and Water Supply Watershed
rules are implemented at a local level. The Town of Hillsborough does rely on
NCDOT to maintain stormwater facilities and programs within state-owned road
rights-of-way.
4. Permitting Information
The Town’s Stormwater Program is under direction of the Stormwater and
Environmental Services Manager. Stormwater and Environmental Services is a
division of the Town’s Planning Department. The Stormwater and Environmental
Services Division works closely with Utilities, Public Works and Planning departments,
and is supervised by the Assistant Town Manager/Planning Director.
4.1 Responsible Party Contact List
Overall implementation and oversight of the Town’s Stormwater Program is
directed by:
Terry Hackett, Stormwater & Environmental Services Manager
Town of Hillsborough
P.O. Box 429
101 E. Orange Street
Hillsborough, NC 27278
Telephone: [phone]
Email: [e-mail]
4.2 Signing Official
The Town of Hillsborough operates under a council-manager form of government.
The town manager is responsible for management and oversight of the Town’s
daily operations. Contact information is listed below:
Eric Peterson, Town Manager
Town of Hillsborough
101 E. Orange Street
P.O. Box 429
Hillsborough, NC 27278
Telephone: [phone]
Email: [e-mail]
5. Co-Permit Status Information
The Town of Hillsborough holds its own NPDES Phase II permit and does not co-
permit with another entity.
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6. Reliance on Another Entity
The Town of Hillsborough utilizes Orange County to implement the Construction Site
Stormwater Runoff Control (i.e. erosion control) portion of its stormwater program.
6.1 Contact Information
Erosion Control Program: Craig Benedict, Director
Orange County Planning and Inspections Department
131 W Margaret Lane, Suite 201
Hillsborough, NC 27278
919-245-2585
[e-mail]
6.2 Legal Agreement
The Town maintains an inter-local agreement with Orange County to provide
erosion control services. The current agreement was approved in October 2012.
7. Stormwater Management Program Plan
The following sections briefly describe the Town’s stormwater management program
for each of the six BMPs. Detailed information regarding each program area can be
found in the Town’s comprehensive stormwater management plan, available on the
Town’s website.
7.1 Public Education and Outreach
The objective of the Town’s stormwater public education and outreach program is
to increase citizen awareness of stormwater runoff pollution and related issues.
The Town’s stormwater public education and outreach program includes the
following primary components:
• Disseminate Educational Materials
The Town disseminates educational materials that are either developed in-
house or use existing materials available from other agencies. These materials
are distributed electronically, at educational programs, special events and
directly to individual citizens or businesses.
• Stormwater Newsletter, Articles and Press Releases
The Town publishes the Stormwater Almanac, a newsletter that educates and
informs citizens about stormwater management issues within the Town. In
addition, Town stormwater staff often write articles on various stormwater
program related topics that are published in other periodicals. Stormwater staff
also coordinates with the town’s Public Information Office for press releases
from the Town highlighting stormwater management related issues,
stormwater related volunteer events, etc.

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• School programs
The Town conducts direct educational, stormwater related programs for local
schools. This includes partnering with other local governmental agencies
conducting environmental education programs in local schools. Annual
programs include Earth Walk with local seventh grade students, Eno River field
trip with Orange High AP Environmental/Earth Science classes, science night
at The Expedition School, as well as other programs as requested.
• Special Events and Civic Groups
The Town provides stormwater education and outreach programs/materials at
local special events such as “Last Fridays”, “Earth Evening” and “Citizens
Academy.” Town stormwater staff also provides educational programs to
various civic groups, including local scout units, homeowner associations,
churches and various other groups.
• Social Media
The Town maintains a Facebook page (www.facebook.com/ToHGovSW/) and
Twitter account (@ToHGovSW) for the Stormwater and Environmental
Services Division. Weekly posts provide education on pollution prevention,
encourage citizens to explore nature and enjoy the Town’s water resources,
and promote special events and volunteer workdays.
• Clean Water Education Partnership.
The Town of Hillsborough actively participates in the Clean Water Education
Partnership (CWEP). CWEP assists member governments with their
stormwater outreach and education program by leveraging member dues to
conduct various media campaigns. The FY2020 CWEP annual report can be
accessed from their website, http://www.nccwep.org/. CWEP summary
statistics are provided in Section 7.1.5, below.
FY2020 Summary statistics for the primary components of the Town’s Public
Education and Outreach Program are provided in the following sections. Please
note that due to the COVID-19 pandemic, programs and events typically held in
the spring were canceled.
7.1.1 School Program Statistics
School Stormwater Education Programs - FY2020
Program Students Giveaways/
Certificates
A.L. Stanback – Earthwalk 238 24
C.W. Stanford – Earthwalk 194 20
Gravelly Hill – Earthwalk 152 14
Total 584 58

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7.1.2 Outreach, Special Events and Other Program Statistics4
Outreach, Special Events and Other Programs - FY2020
Program Participants Handouts/
Giveaways
TES – Robotic Teams 21 11
Hillsborough Rotary Club 9 --
Total 30 11

7.1.3 Newsletters, Articles and Press Release Statistics
Newsletters, Articles and Press Release Statistics – FY2020
Stormwater Almanac (newsletter) Issues Published 2
Stormwater Related Press Releases 4
Stormwater Related Articles Written/Published 1

7.1.4 Town of Hillsborough Social Media Statistics

Social Media Posts - FY2020
Statistic Facebook Twitter
Posts 62 56
Followers 151 191
Impressions 14,373 28,500

Facebook Post Statistics - FY2020
Statistic Total Average per Post
Post Reach5 10,362 167
Post Impressions6 12,797 206
Engaged Users7 770 12

4 Due to the COVID-19 pandemic, programs and events scheduled for the spring of 2020 were cancelled.
5 Count of people for whom the post entered their screen
6 Count of times a post entered a person's screen
7 Count of people who engaged with the post, including liking, comm enting, and sharing
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7.1.5 CWEP Media Statistics
CWEP Statistics – FY20208
Town’s FY2020 Cost Share $2,302.00
Market Triangle Market
Cinema Campaign 506,294 impressions
Spectrum Digital Campaign 1,581,086 impressions
Capitol Broadcasting Company
Digital Campaign 11,478,556 impressions
La Notica (Spanish Magazine) 1,172,500 impressions
Social Media Campaign 847 engagements
Website Performance 7,753 visitors9
Hillsborough’s Estimated Share 53,382 impressions
7.2 Public Involvement and Participation
The objective of the Town’s public involvement and participation program is to
strengthen citizen engagement in stormwater and environmental issues affecting
the Town. Public Involvement and participation includes providing volunteer
opportunities, exchanging information with citizens and elected officials, and
providing public assistance on stormwater related issues.
• Volunteer Opportunities
Town Stormwater and Environmental Services Division staff coordinates
volunteer opportunities to raise awareness of stormwater runoff pollution,
engage citizens and ultimately reduce target pollutants. Volunteer
opportunities regularly include trash/litter clean-ups, wetland/riparian
vegetation planting, invasive species removal/monitoring, qualitative stream
monitoring, and maintenance of the Town’s pollinator/rain gardens and
stormwater wetland.
• Public Meetings
At a minimum, Town Stormwater and Environmental Services Division staff
presents one update to Hillsborough’s elected Town Board of Commissioners
regarding the stormwater program, annually. As part of the presentation, Town
Commissioners can provide input on pertinent issues. Staff may also provide
presentations to other Town advisory boards as requested.

8 Impressions listed for campaigns are totals for the entire market. Hillsborough’s mass media impressions
are estimated based on the town’s population size.
9 CWEP website visitors during mass media campaign March-July.
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• Public Assistance
Town Stormwater and Environmental Services staff provides assistance to
citizens regarding stormwater pollution prevention, riparian buffer regulation,
drainage issues and other related topics. This includes site visits and
investigations as necessary.
In addition to the items listed above, the Town maintains a website with pertinent
stormwater information. This includes email and phone numbers of stormwater
staff so that citizens can report concerns. Other than emails and calls received,
Town Stormwater and Environmental Services staff does not report website
statistics.
FY2020 Summary statistics for the primary components of the Town’s Public
Involvement and Participation Program are provided in the following sections.
Please note that due to the COVID-19 pandemic, volunteer opportunities planned
for the spring were canceled.
7.2.1 Volunteer Opportunity Statistics
Litter/Trash Clean-ups – FY2020
Number of Events 4
Number of Volunteers 63
Miles Cleaned 3.0
Pounds Collected 588

Tree/Wetland Plantings - FY202010
Name/Location Participants Trees/
Plants Acres
Public Works Restoration Project 35 60 0.2
Total 35 60 0.2

Volunteer Monitoring – FY202011
Number of Groups 1
Number of Monitoring Locations 2
Total Number of Volunteers 6
Number of Actions Completed as a result12 0

10 Spring volunteer planting events, including annual volunteer maintenance of the Town’s stormwater wetland
at Gold Park were canceled due to the COVID-19 pandemic
11 Volunteer monitoring events that the Town typically organize in the spring did not occur due to the COVID -
19 pandemic.
12 Results of monitoring indicated no water quality issues, so no actions were taken.
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7.2.2 Public Meeting Statistics
Stormwater Related Public Meetings FY2020
Number of Public Meetings 5
Number of Attendees 84

7.2.3 Public Assistance Statistics
Public Assistance – FY2020
Number of Calls, Complaints, Issues 14
Number Resolved 13

7.3 Illicit Discharge Detection and Elimination
The Town’s stormwater illicit discharge detection and elimination program (IDDE)
is outlined in its Illicit Discharge Detection and Elimination Plan and is enforced
through the Town code. This plan details measures that Town Stormwater and
Environmental Services Division staff follows to find and eliminate illicit discharges
and connections to the MS4. The primary components of this plan are described
below:
• MS4 Mapping
The Town maintains a GIS map and database of the stormwater infrastructure
within town limits. This includes pipes, ditches, swales catch basins, inlets,
outlets and stormwater outfalls. The Town defines stormwater outfalls more
broadly than EPA definitions. This conservative approach allows Town
Stormwater and Environmental Services Division staff to evaluate outfalls as
time allows and may eliminate some as stormwater outfalls, if appropriate.
Currently, there are approximately 123 stormwater outfalls located within the
Town’s jurisdiction.
• High Priority Areas
The Town’s Illicit Discharge Detection and Elimination Plan calls for the
identification of high priority areas for IDDE screening investigations. The Town
has designated four high priority areas: Downtown, Central Business District,
West Hillsborough, and Meadowlands. These areas reflect a relatively high
development density as well as a concentration of light industrial and
commercial land use.
• Illicit Discharge Investigation
In general, this includes screening of high priority areas, dry weather
inspections of stormwater outfalls and investigation of complaints/concerns
submitted by citizens or by other town employees.

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• Sanitary Sewer Overflows
While a sanitary sewer overflow (SSO) is ultimately the responsibility of the
Town’s Utility Department, overflows can reach the stormwater system and/or
receiving waters and are considered an illegal discharge. Therefore, statistics
for SSO’s are included below.
• Employee Cross-Training
An important aspect of the town’s IDDE program is to provide training to other
town employees in recognizing and reporting possible illicit discharges and
connections. In FY2020, stormwater program training materials were updated
by staff. Stormwater training now has three modules which include:
Module 1 – Why Care about Stormwater?
Provides an overview of stormwater runoff pollution, impacts to the
environment, and the town’s stormwater program; module 1 is
recommended for all town employees.
Module 2 – Recognizing Illicit Discharges
Specifically discusses the town’s IDDE program and how employees can
recognize possible illicit discharges and report them to stormwater staff;
module 2 is recommended for field employees in the Utilities, Public Works
and Police departments.
Module 3 – Stormwater Pollution Prevention
Discusses the importance of good housekeeping and other best
management practice measures at town owned facilities; while this training
is good for all employees it is primarily geared towards employees that work
at Fleet Maintenance, Water Treatment, Wastewater Treatment, and
employees that repair and maintain town infrastructure such as sanitary
sewers, water lines, stormwater infrastructure, streets, etc.
FY2020 Summary statistics for the primary components of the Town’s IDDE
Program are provided in the following sections.
7.3.1 Illicit Discharge Statistics
Illicit Discharge Summary – FY2020
Illicit Discharge
Screening & Inspection
Screening Investigations conducted 11
Dry weather inspections conducted 11
Illicit discharges found 0
Illicit connections found 0
Illicit discharges/connections resolved 0
NOVs Issued 0

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Illicit Discharge Summary – FY2020 (continued)
Individual Complaints
& Investigations
Number of Complaints/Investigations 7
Investigations resolved 7
NOVs Issued 0

7.3.2 Sanitary Sewer Statistics
SSO Summary – FY2020
Number of SSO’s 0
Reported to state 0
Causes identified n/a
Sites repaired n/a
Total Volume of SSO’s (gallons) 0
Volume reaching surface waters
(gallons) 0

7.3.3 Cross-Training Statistics
Employee Stormwater Training – FY2020
Module Number of
Employees
Module 1 – Why Care About Stormwater? 31
Module 2 – Recognizing Illicit Discharges 27
Module 3 – Stormwater Pollution Prevention 27

7.4 Construction-Site Stormwater Runoff Control
Orange County implements and enforces construction site stormwater runoff
control for the Town of Hillsborough through its erosion control program. Orange
County has local delegated authority from the state to implement an erosion control
program. Legal agreements are in place allowing Orange County to enforce its
sedimentation and erosion control ordinance within the Town’s jurisdiction except
for publicly funded projects, which are subject to state jurisdiction.
Active construction projects are inspected regularly by Orange County Erosion
Control staff. Inspection reports, notice of violations (NOVs) and stop work orders
are provided to Town Stormwater and Environmental Services staff. In addition,
the Town is required to conduct periodic audits/inspections of active construction
sites, including Town construction projects, to help ensure compliance. Generally,
Town Stormwater and Environmental Services Division staff typically inspect
active construction sites once a month and conduct brief site visits more frequently.
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FY2020 Summary statistics for the primary components of the Town’s
Construction-Site Stormwater Runoff Control Program are provided in the
following sections.
7.4.1 Erosion Control Projects Reviewed/Permitted FY2020
ECP Review Summary – FY2020
Project Name Tract Size
(acres)
Area
Disturbed
(acres)
Daphine Drive Subdivision 4.85 1.35
Forest Ridge Phase 4 11.75 8.4
Hillsborough Commons Outparcel 1.13 0.75
Mavis Discount Tire 0.81 0.55
Waterstone MOB 4.75 3.37
Totals 23.29 14.42

7.4.2 Erosion Control Inspection Statistics
Inspection Summary – FY2020
Active Projects Privately Owned 15
County Owned13 1
State Owned13 1
Town Owned Projects 1
Total 18

Inspection Summary – FY2020 (continued)
Inspections Conducted OCEC Staff 167
Town Staff 59
Total 226

Enforcement Actions NOVs Issued 0
Stop Work Orders 0
Total 0

13 Orange County’s North Campus project and the state owned UNC Hospital expansion are subject to the
Town’s post-construction stormwater management requirements, but are permitted by the state’s erosion
control program.
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7.5 Post-Construction Stormwater Management
The Town’s post-construction stormwater program includes two primary
components: new development review/approval and stormwater control measure
(SCM) inspection.
• New Development Review
Proposed development projects are reviewed to determine if the Town’s
stormwater standards within the Unified Development Ordinance (UDO) are
met. Projects meeting those requirements are issued a stormwater
management plan approval. New development projects must currently meet
both the NPDES Phase II post-construction stormwater requirements and the
Falls Lake Rules nutrient loading requirements. Additionally, all SCMs must
meet the state’s Minimum Design Criteria (MDCs).
• SCM Inspection Program
The Town is required to maintain an SCM inspection program pursuant to both
the NPDES Phase II regulations and the Falls Lake rules. The Town requires
the owner of each SCM to inspect at least annually and submit a report to the
Stormwater and Environmental Services Division. Additionally, the Town is
required to inspect (or what the Town staff now calls “audit”) SCMs approved
through the UDO at least once every five years.
There are also SCMs within the Town’s planning jurisdiction that were
approved prior to the Town’s NPDES stormwater permit issued in 2005. In
March of 2013, Stormwater and Environmental Services embarked on a
program to bring all SCMs within the Town’s planning jurisdiction into
compliance. This process includes conducting onsite audits of private SCMs
by Town Stormwater and Environmental Services Division staff as time and
resources allow. The intent is to exceed the audit/inspection interval required
by the NPDES and Falls Lake regulations. The goal is to complete at least a
third of SCM on site audits annually.
Town Stormwater and Environmental Services Division staff also tracks
compliance with submittal of the required annual maintenance and inspection
reports. The Town’s UDO requires all SCM owners to submit their annual
inspection report by September first of each year.
Stormwater and Environmental Services began a new program in FY2018 to
recognize those SCM owners who have exceptional compliance records.
Annually in the early spring, staff evaluates SCM owner compliance and
selects a small subset of owners to be recognized. Winners are recognized via
social media, town press release, and the Stormwater Almanac publication.
They are also given a certificate signed by the mayor.
FY2020 Summary statistics for the primary components of the Town’s Post-
Construction Stormwater Management Program are provided in the following
sections.
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7.5.1 New Development Review Statistics
Development Summary of Approved Projects – FY2020
Development Name Type Site
Acreage
Impervious
Acreage
Number
of SCMs
Orange County Northern Campus
Phase 1 Institutional 21.18 5.80 1
UNC Hospital Expansion Bed
Tower II Institutional 8.97 3.04 2
Hillsborough CDJ+R Commercial 5.99 3.60 1
Mavis Tire Commercial 0.81 0.59 2
Waterstone Medical Office
Building Commercial 4.57 1.31 1
Collins Ridge Phases 1&2 Residential 117.43 62.92 5
Total 158.95 77.26 12

SCMs Approved for Development Projects – FY2020
Stormwater BMP Type Quantity
BayFilter 1
Filterra 2
Level Spreader and Filter Strip 1
Stormwater Wetland 1
Wet Pond with Floating Wetlands 2
Wet Pond 4
Underground Detention 1

7.5.2 SCM Inspections Statistics
SCM Onsite Audit Summary – FY2020
Number of Mapped SCMs 122
Audits/Inspections Conducted 33
Maintenance Issues Identified 27
Maintenance Issues Resolved as a Result 8
Violations Noted 0
NOVs Issued 0

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7.5.3 SCM Annual Maintenance Inspection Report Compliance
Annual Inspection Reports Received – FY2020
Y ear No. of SCMs Compliant
2013 63 13%
2014 66 47%
2015 72 71%
2016 85 73%
2017 87 76%
2018 91 78%
2019 95 87%
2020 122 72%

7.6 Pollution Prevention/Good Housekeeping for Municipal Operations
The Town’s pollution prevention/good housekeeping program includes five primary
components: evaluate Town operations, corrective action, MS4 maintenance,
employee training, and public awareness.
• Pollution Prevention/Good Housekeeping Inspections
Evaluating Town operations and taking corrective action are part of the
pollution prevention/good housekeeping inspection process. Stormwater and
Environmental Services staff conduct annual inspections of each town-owned
facility. Facilities are given one of three ratings: compliant, compliant with
conditions or non-compliant. Facilities rated compliant with conditions typically
have just one or two minor issues that need corrected. Non-compliant facilities
either have a major issue or numerous minor issues that need corrected. Once
corrective actions are completed, follow-up inspections are conducted to
ensure issues were rectified.
• MS4 Maintenance
The Town is responsible for maintaining the MS4 within Town street rights-of-
way and Town owned properties. MS4 maintenance includes street sweeping
on all curb and gutter streets, parking lot sweeping on town-owned property,
maintaining and removing debris from catch basins within town streets, and
maintaining ditches/swales along town-maintained streets. Maintenance not
only ensures proper drainage, it also helps keep pollutants out of the MS4.
Additionally, during the fall/winter months the Town removes leaves from
streets, including those collected by citizens. This helps reduce excess
nutrients—one of the Town’s target pollutants—reaching the MS4 and local
waterways.

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• Employee Training
An important aspect of the Town’s Pollution Prevention/Good Housekeeping
program is to provide training that teaches town employees best practices in
reducing stormwater runoff pollution. As noted in Section 7.3, stormwater
program training materials were updated by staff in FY2020. The Town’s
stormwater training now has three modules, one of which focuses on
stormwater pollution prevention and god housekeeping for town owned
facilities.
• Public Awareness
This aspect of the Pollution Prevention/Good Housekeeping program is
handled through the Public Education and Outreach program described in
Section 7.1.
7.6.1 Pollution Prevention Inspection Results
Stormwater staff conduct the highest priority pollution prevention
inspections at the beginning of the fiscal year. These include the
Wastewater Treatment Plant (WWTP), Water Treatment Plant (WTP), the
Utility Collections and Distributions yard, the Public Works yard, and the
Fleet Maintenance facility. The remaining inspections are conducted in May
and June of each year. This timeframe allows a better assessment of the
vegetative components of town-owned SCMs, lawn and other landscape
or open space areas associated with town properties.
However, due to restrictions resulting from the COVID-19 pandemic, staff
did not have adequate time to inspect all town-owned properties as
scheduled in May and June. In fact, stormwater staff received an unusual
number of time-sensitive customer requests in May and June, including
citizen concerns, site visit requests from new development projects, and
assisting the Town’s Utility Department in permitting riparian buffer and
stream impacts for emergency repair of an exposed sewer main.
As a result, eleven town-owned facilities were inspected in FY2020. Of
those, five were compliant and 6 were compliant with conditions. For the
facilities that were compliant with conditions, corrective actions were either
completed or are in progress. Follow up inspections of the compliant with
conditions facilities will be conducted during the next fiscal year. Likewise,
pollution prevention inspections of the facilities not inspected in FY2020 will
be conducted in following fiscal year.
In preparing this year’s annual report, staff realized that the Town’s Good
Housekeeping/Pollution Prevention Plan needs to be reviewed and
updated to prioritize properties based on stormwater pollution potential and
exposure risk. This will help improve efficiency, especially when faced with
constraints as noted in FY2020. Staff plans to review and update the plan
in FY2021.
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NPDES Phase II Annual Report Fiscal Year 2020

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Good Housekeeping Inspections – FY2020
Facility Status
1. Cemetery Compliant w/conditions
2. Cates Creek Park Compliant
3. Fairview Community Policing Center not inspected in FY2020
4. Fleet Maintenance Compliant
5. Gold Park Compliant w/conditions
6. Kings Highway Park not inspected in FY2020
7. Murry Street Park not inspected in FY2020
8. Museum not inspected in FY2020
9. Old Landfill Compliant
10. Police Department not inspected in FY2020
11. Public Parking not inspected in FY2020
12. Public Works Compliant
13. Riverwalk Compliant w/conditions
14. Town Hall not inspected in FY2020
15. Town Hall Annex not inspected in FY2020
16. Turnip Patch Park not inspected in FY2020
17. Wastewater Treatment Plant Compliant w/conditions
18. Water Distribution Compliant w/conditions
19. Water Tower (UNC Hospital) Compliant
20. Water Treatment Plant Compliant w/conditions
7.6.2 MS4 Maintenance Statistics
MS4 Maintenance/Cleaning – FY2020
Number of Regular Roads/Parking Lot Cleanings 16
Percentage of Storm Drains/Catch Basins Cleaned14 38%
Amount of Trash/Debris/Sediment Removed 2,500 lbs.
Linear Feet of Ditches/Swales Maintained15 2,123 feet
Amount of Leaves Collected/Mulched 660 tons

14 This represents cleaning of loose debris and not accumulated sediment. Note that d ue to staff resource
constraints, repairs on ditches and swales were prioritized over storm drain and catch basin cleaning.
15 This may include removal of debris, removal of accumulated sediment, reshaping, revegetating, etc.
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7.6.3 Employee Training Statistics
FY2020 employee training statistics are provided in Section 7.3.3. A total
of 27 town employees were trained in stormwater pollution prevention.
Additionally, Stormwater and Environmental Services staff attended one
stormwater SCM training event in FY2020.