04_NCS000427_MS4 O&M Plan_20230502

National Pollutant Discharge Elimination
System (NPDES)
Municipal Separate Storm Sewer
System (MS4) Program
Operations and Maintenance Program
Town of Cary

Table of Contents Page
Introduction..................................................................................... 2
Purpose Statement........................................................................... 4
Stormwater and Public Works Overview................................................ 4
Permit Requirement Elements............................................................. 12
Drainage Service Requests................................................................ 13
YardWaste..................................................................................... 14
StreetSweeping ............................................................................... 15
Catch Basin Inspection....................................................................... 16
Culvert Blockage Removal / Storm Drain Cleaning .................................. 17
Structural Maintenance and Repair....................................................... 18
Structural Asset Management Inspection.............................................. 19
Winter Road Maintenance (Road Salt and Brine) ..................................... 19
Structural Stormwater Control Measure (SCM) Maintenance......................... 21
EmployeeTraining............................................................................ 23
Appendices
Appendix A— Inventory of Town SCM's
Appendix B — SCM inspection and Procedures and Checklist
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Introduction:
This Stormwater Operation & Maintenance (O&M) Plan for the Town of Cary is
prepared to address stormwater infrastructure O&M requirements of the National
Pollutant Discharge Elimination System (NPDES) Phase 2 General Permit for
Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4),
hereafter referred to as the "MS4 Permit."
This O&M Plan addresses Minimum Control Measure 6, Good Housekeeping and
Pollution Prevention for Permittee Owned Operations, by describing the activities and
procedures the Town of Cary will implement so that the Town owned MS4
infrastructure is maintained to reduce the discharge of pollutants. The O&M Plan
outlines inspection and maintenance procedures for drainage service requests,
structural maintenance, yard waste, catch basins, street sweeping, culvert inspections,
road salt and brining operations, and Town owned Stormwater Control Measures
(SCM).
There are approximately a total of 600 miles of storm drain in the Town. The Town
owns and maintains 183 miles of the storm drain system in the Right-of-Way and on
Town property. The remainder of the storm drainage is the responsibility of NC
Department of Transportation and private ownership. The Town also maintains natural
channels on Town property. In cases where stream obstructions threaten the Town's
water, sewer and /or storm systems channel maintenance will be addressed on private
property. There are approximately 32,645 storm drain inlets (curb inlets and yard
inlets) in the town and 14,423 in the Right-of-Way which are maintained by the Town.
The Town does not maintain stormwater infrastructure on in the NCDOT Right-of-Way
or on private property.
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Town of Cary Planning Boundary
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Purpose Statement:
The purpose of this plan is to outline practices related to inspection, operation, and
maintenance of the existing storm drain system. It currently includes the following:
• Drainage Service Requests and Policy (311)
• Yard Waste
• Street Sweeping
• Catch Basin and Inlet Inspection
• Culvert Blockage Removal
• Storm Drain Cleaning
• CCTV of Storm drain system
• Structural Asset Maintenance and Repair/Culvert Inspections
• Road Salt and Brining
• Town Owned Stormwater Control Measures
Stormwater Program Overview:
The chart shows the connection to the NPDES permit and the six minimum measures
that are addressed. The O&M program is implemented across a variety of measures
RMWATER DIVISION
Stormwater Master
Admininstration Plan
Programs
NPDES Phase 2 Capital Projects Floodplain Managers Environmental Protection Service Support ❑evelopment Services
Public Education& Public Involvement& Illicit Discharge Pollution Prevention& Censtructic n Site Post Construction Site
Outreach Partici anon Detection&Elimination Good Housekeeping Runoff Runoff
Adaptive Stormwater
Ordinances Open Spece Steering Committee Basin Model Maintenance
from public education and participation, IDDE program, and Pollution Prevention/Good
Housekeeping.
The Stormwater Division has positions that address these programs. The Stormwater
Operations Manager and Stormwater Project Managers handle the citizen contacts that
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concern flooding, culvert, and storm drain issues. These are evaluated and can become
a capital project to address culvert sizing and flooding from backwater issues, sinkholes
in the Right-of-Way or when it affects the primary residence on a property, and culvert
inspection and repairs. Staff also maintains the stormwater GIS inventory and schema
and use an asset management program that includes Public Works in the process of
maintaining our storm drain system. The Senior Civil Designer works with staff to on
small design projects for the storm drain system and are handled in house. The Civil
Designer inputs record drawings that are submitted to the Town (public and private) into
the GIS inventory. The Environmental Specialist handles the Good Housekeeping
program of the NPDES permit. This is mainly annual inspections, training, SWPPP
development and evaluation for Town facilities that have possible impacts to stormwater
runoff. This position also addresses the town's Stormwater Control Measures (SCM) on
Town property.
The Stormwater Analyst works closely with staff to ensure that we are meeting
components of the NPDES permit with our good housekeeping requirements and
reporting. The Stormwater Development Administrator reviews plans for both private
and public development. They ensure that the site conforms to the standard details and
specifications for erosion and sediment control as well with the post construction
devices that will treat the stormwater on site. The Stormwater Field Services
Administrator and Technicians ensure that construction is following the approved plans,
erosion and sediment control, and post construction requirements.
The Stormwater Division is currently composed of 12 employees as follows:
Stormwater Operation Manager — Billy Lee
Stormwater Field Services Administrator — Charles Brown
Stormwater Program Analyst — Emily Cochran
Stormwater Project Manager— Michael Mazanek
Environmental Specialist — Eric Kulz
Sr. Stormwater Project Manager— Jan Patterson
Sr. Civil Designer— Richard Carter
Sr. Stormwater Field Services Technician — Todd Hoefler
Stormwater Field Services Technician (2) -Mike Thompson / Will Feely
Stormwater Development Administrator— Lisa Booze
Stormwater Communication & Outreach Specialist — Marie Cefalo
Stormwater Operations Manager
The Stormwater Division Operations Manager oversees the day-to-day activity within
the 14 programs in the Division and with an emphasis on citizen assistance, Capital
Improvement Projects, Asset Management, Outreach, IoT, Development, Stormwater
Management and Floodplain Management. At least a quarter of the time is in the field
addressing citizens' concerns that have elevated due to the stresses that can be
realized from impacts from stormwater. Additional field time includes Capital project
construction oversight and IoT water level sensor maintenance. The operation manager
also conducts weekly meetings with staff to coordinate activities of the Division.
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Field Services Administrator (Construction Program)
The Field Services Administrator (FSA) overseeing development from plan review
through construction, conversion of a construction site runoff SCM, to a post
construction site runoff SCM, to issuance of certificates of occupancy, to post
construction annual maintenance and certification in perpetuity. The position oversees
two (2) SW Field Technicians that between them periodically inspect on average 120
construction sites. Additionally, the position oversees a third Sr. SW Field Technician
that's primary focus is citizen assistance. The Division take roughly 700 citizen calls a
year and typically conducts over 350 citizen assistance site visits. The FSA also assists
with administering the 14 Division programs with an emphasis on Illicit Discharge
Detection and Elimination, Construction Site Runoff, Post-Construction Site Runoff,
Pollution Preventions and Good Housekeeping of Town facilities.
Stormwater Development Administrator (Erosion and Post Construction Review)
The SW Specialist two (2) primary roles are development/redevelopment plan review
and Floodplain Administrator. The SW Specialist assists with overseeing development
within Cary including construction site and post construction site runoff control. This
staff member attends Development Review Committee (DRC) meeting every
Wednesday. As the Floodplain Administrator activities include issuing floodplain
permits, administering the Community Rating System Program (which we have applied
for and completed a CAV) and compliance.
Stormwater Project Manager - Water Quality (Storm drain projects)
The Stormwater Project Manager assists with maintaining the Capital Improvements
Program. The primary focus is managing Town staff, On-Call consultants and
contractors associated with design and construction of stormwater infrastructure
improvement projects. This position also including design of infrastructure
improvements in-house using AutoCAD. Field support and oversight are frequent during
construction activity and requires coordination with staff, contractors, consultants, and
citizens. The SW Project Manager assists the Environmental Specialist with the riparian
buffer program. This position also works with Public Works and contractors on stream
bank erosion impacting Town infrastructure. They also help with the Town's Drainage
Assistance Programs under Policy Statements 35 which is a citizen-based approach.
Assist with the IoT stormwater sensor program and GIS based Asset Management
Programs.
Stormwater Project Manager (Storm drain projects and Asset Management)
The Stormwater Project Manager assist with maintaining the Capital Improvement
Program. The primary focus is maintaining the GIS stormwater inventory and a GIS
based Asset Management and Condition Assessment Programs. This position also
manages the proactive Stormwater Infrastructure CCTV and jet/vacuum program
conducted by dedicated Public Works staff. This PM uses the GIS based tool to
prioritize Capital Improvements and manages the design and construction of projects
associated with floodplain improvements. This position also directs staff with in-house
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design and GIS based inventory. Assists with annual capital budget and tracks project
expenditures, and coordinates with other departments in implementation.
Stormwater Analyst (NPDES coordinator and Post Construction)
The Stormwater Analyst manages the NPDES Phase II permit programs. This includes
6 programs with annual measurable goals and reporting requirements. Manages the
Neuse River Basin Rules, TMDL Water Quality Recovery Program, Jordan Lake Rules
requirements and reporting. Oversees the Post Construction and Illicit Discharge
Detection and Elimination (IDDE) program, ensuring that the requirements for the
NPDES permits are being fulfilled. These programs are GIS administered and require
constant and immediate attention. Post Construction requires monthly letters to be
remitted to HOAs to maintain SCMs monthly and certify annually. Assists with
floodplain permitting and impervious issues with regards to building permits.
Environmental Specialist (Environmental Permitting and Good Housekeeping)
The Environmental Specialist administers the Jordan Lake Buffer Program as delegated
by the State, performing on-site buffer determinations, reviews development plans for
compliance with the buffer rule, issues buffer authorizations for development projects,
and enforces the Jordan Lake buffer and Town Urban Transition Buffer (UTB)
requirements. The position also oversees Town-owned Stormwater Control Measures
(SCMs), Town-owned dams, and the Good Housekeeping Program (20 facilities with
Stormwater Pollution Prevention Plans) requirements under the Town's NPDES Phase
II stormwater permit. It also includes an annual training program that the position
administers to facilities staff. In addition, the Environmental Specialist provides
technical support and 404/401 planning and permitting assistance across Town
departments for both capital projects and Town operations and maintenance. In
addition, position manages on-call environmental science and engineering contracts.
Sr. Civil Designer
The Civil Designer assists the Operations Manager and Project Managers with
numerous tasks. This staff member assist with GIS based and AutoCAD based task.
For in-house projects development of construction drawing is a primary focus. Using
GIS based software this position also enters development plans, as built and record
drawings. The Civil Designer directs survey and subsurface utilities efforts in-house and
through On-Calls. Construction plans development extends to bidding and some
construction oversight.
Outreach & Communication Specialist (Public Education and Outreach)
The Outreach and Communication Specialist ensures that the Public Education and Public
Engagement requirements of the NPDES Phase II permit are fulfilled. The position provides
educational and outreach opportunities to the community by delivering in-class/in-person
presentations, developing Web page information, staffing, and developing festival booth
materials, facilitating the development of videos, participating in steering committee of the
Clean Water Education Partnership that guides the creation and implementation of regional
mass media and direct education materials. The position also is responsible for facilitating
and providing citizen engagement opportunities that support an understanding of
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stormwater control measures through hands-on experiences such as tree plantings, storm
drain labeling, litter sweeps, and rain garden installations.
Senior Stormwater Technician (311 call center contact and IDDE program)
The Senior Stormwater Technician's primary focus is maintaining the citizen assistance
program. Stormwater impacts every citizen on a regular basis. Stormwater receives on
average over 700 calls a year with over half requiring at least one to two site visits.
There are 12 categories of calls that once received through 311 or other
communications such as website reporting the Technician triages and categories the
calls. Most of the calls are handled by this staff member but on many occasions other
stormwater staff members are brought in for assistance. All Stormwater staff members
assist with 311 calls. The Sr SW Tech also assists the Stormwater Technicians with
Erosion and Sediment Control and S100 inspections.
Stormwater Technician (Construction to Post Construction)
The two (2) Stormwater Technicians conducts Construction Site Runoff inspections for
compliance with federal, state, and local regulations. On average each inspector has
rough 60 sites to manage. Duties begin with setting up a preconstruction meeting,
followed by routine inspection through the life of the project. The Techs administer the
conversion process from an Erosion and Sediment Control device to a Post
Construction Site Runoff device. This is coordinated with the Stormwater Analyst so
that it can be inventoried and set up for annual inspection and certification in perpetuity.
Public Works
The Public Works Department is tasked with operations and maintenance of public
infrastructure. They maintain Town owned streets, water, sanitary sewer, and
stormwater in the Right-of-Way. The main areas that affect stormwater as part of the
MS4 are leaf collection and street sweeping, storm drain CCTV (video and pole camera)
and cleaning, pipe maintenance and repair (in house and by contractor), facility
maintenance and inspection. The Town has identified five facilities that require a
Stormwater Prevention Pollution Plan (SWPPP). All facilities are inspected annually by
stormwater staff and public works maintains daily and inspections are done monthly at
sites. The SWPPP details areas of concern at the facilities that can lead to impacts from
stormwater runoff.
Public Works Department:
Facilities Management:
Facilities Division Manager— Betsie Winokur
Facilities Work Expeditors — Tim Beebe, Hoyt Cole, Dale North, Brannon Powell
Facilities Coordinator— Dennis Stanley
Operations:
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Operations Division Manager— Jim Hallowes
Operations Coordinator— Streets Division — Bill Roy
Operations Field Supervisor— Will Descourouez
Operations Project Specialist — Walter Stroud
Wastewater Collection System Operator— Paul Campbell
Wastewater Collections Field Supervisor — Thomas Lubcker
Collection System Investigation Field Supervisor — Chad Lemke
Senior Wastewater System Technician — Taylor McDaniel, Ward Renfrow
Solid Waste Management Division:
Solid Waste Division Manager— Jesse Troublefield
Solid Waste Operations Coordinator— Brian Burgess, Brandon Roberson
Facilities Division Manager
Performs complex administrative and supervisory work directing and evaluating all
activities related to the management of Town buildings and landscapes in addition to its
athletic facilities, parks, greenways, and Rights-of-Ways.
Facilities Coordinator (Leaf collection and Street Sweeping Programs)
Performs responsible administrative and supervisory work assisting with the planning
and implementation of a comprehensive maintenance and repair program for Town
buildings, landscapes, parks, trails, Rights-of-Way, cemetery, and stormwater control
devices. The facilities Coordinator is responsible for the assignment of resources and
the management of the workflow. Decision making, communication and organizational
skills are key elements of the work. Supervision is exercised over field supervisory staff
(Facilities Work Expeditors) and field personnel. Coordinates with other town
departments to provide support for buildings, events, Right-of-Way, recreational
program support, and programs such as leaf collection. Develops preventative
maintenance to town owned buildings, facilities, properties, parks, ball fields,
playgrounds Rights-of-Way and stormwater control devices.
Facilities Work Expeditor (Oversee facilities maintenance)
Performs responsible administrative and supervisory work planning and scheduling the
work activities of a multi-disciplined team engaged in the maintenance and care of Town
buildings, landscapes, parks, athletic fields, trails, and Rights-of-Ways. Work may also
include public works code enforcement duties. Ensures Town goals of quality,
customer-oriented, and cost-effective service are met. Supervision is exercised over
multiple work teams at assigned facilities or teams assigned to special programs
support.
Operations Division Manager (Oversees work on
infrastructure)
Performs difficult professional, technical and administrative work in overseeing the
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maintenance, construction, and repair of water distribution and wastewater collection
systems, stormwater drainage systems, reclaimed water systems, computerized traffic
signals, streets and concrete infrastructure, and other special projects; work requires
considerable independent judgment and discretion in the performance of duties.
Operations Coordinator— Streets Division (Right-of-Way repair)
Performs difficult administrative and technical work in overseeing the work of public
works crews, scheduling and setting priorities for the crews, and dealing directly with the
public to respond to complaints and questions. Oversees repair on Town maintained
streets, sidewalks, curb and gutters, and stormwater drainage projects. Supervision is
exercised over Operations Division personnel.
Operations Field Supervisor (Right-of-Way repair)
Performs difficult administrative and technical work in overseeing the work of public
works and utilities crews, scheduling and setting priorities for the crews, and dealing
directly with the public to respond to complaints and questions. Work is performed
under the general supervision of the operations Coordinator— Street Maintenance and
Repair. Supervision is exercised over Operations Division personnel. Enters works
orders into computer system, updates databases and reviews maps in GIS. Oversees
repair on Town maintained streets, sidewalks, curb and gutters, and stormwater
drainage systems. Oversees repair of water and wastewater utility systems.
Operations Project Specialist (Right-of-Way repair)
Performs difficult, technical work in developing comprehensive programs to provide
contract support for streets, utilities, and signal maintenance programs. An employee in
this class is expected to possess the highest level of technical knowledge in the area of
assignment but works independently as a technical resource to the division. An
employee will be expected to address challenging or difficult problems and have
responsibility for developing and implementing comprehensive contractual maintenance
and repair programs for the Operations Division. Updates management staff on status
of projects; gives oral and written reports periodically. Oversees the most difficult and
technical repair and maintenance projects. Reviews plans and specifications for new
construction and rehabilitation projects. Oversees project coordination. Develops
specifications for service and project contractors such as street repairs, utility repairs,
easement maintenance, televising of sewer and stormwater systems, adverse weather
contract operations. Oversees and inspects the work of service and project contractors.
Wastewater Collection System Operator (CCTV/Cleaning/Repairs)
Performs difficult skilled, technical, and supervisory work in the overall planning and
management of the wastewater collection and stormwater systems for the Town.
Oversees and participates in a comprehensive sewer line maintenance program;
ensures that sewer lines are kept open and working properly. Carries out preventative
maintenance program; ensures around the clock sewer response capability exists.
Responds to citizens' requests and complaints on sewer cleaning, easement clearing,
and storm drain problems. Develops, plans, and implements long-range sewer
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rehabilitation projects; coordinates staff to provide CCTV inspection and cleaning;
compiles and updates sewer maintenance, repairs, and historical information into
databases;
Wastewater Collections Field Supervisor (Storm drain in Right-of-Way repair)
Performs difficult technical and supervisory work in overseeing the daily field activities in
the maintenance of the wastewater collection systems and the stormwater systems for
the Town. Oversees the field operations of preventative maintenance to the stormwater
program, acoustic testing, commercial and residential line cleaning; line repair, and
easement clearing. Collects and processes all data collected from acoustic testing of
residential, commercial and storm drain lines, evaluates acoustical scores and
schedules main line cleaning based on ratings. Ensures all field operations and 311
cases received are properly documented in Salesforce. Responds to citizen complaints
of stormwater calls for blockages and inspections; schedules work orders for vacuuming
and storm drain line cleaning; schedules meetings with residents for educational
purposes on easements, stormwater locations that fall in and outside the Right-of-Way.
Wastewater Collections Investigations Field Supervisor (Video inspection)
Performs difficult technical and supervisory work in overseeing the daily field activities in
the surveillance and assessment of the wastewater collection system for the Town.
Work is performed under the general supervision of the Wastewater Collection System
Operator. Supervision is exercised over subordinate personnel. Oversees the field
operations of TV inspections, inflow/infiltration, flow monitoring, odor control, data
collection and reporting. Assists in a comprehensive sewer line maintenance program;
ensures that sewer lines are kept open and working properly. Manages the GPS data
collection for manhole locations, repairs, and inspections. Inspects and repairs
manholes. Responds to citizen complaints, schedules meetings with residents for odor
complaints.
Senior Wastewater System Technician (Video Inspection)
Performs difficult skilled and technical work in monitoring the easement mowing, sewer
cleaning and inspection programs of the Town's wastewater collection system. Work is
performed under the Wastewater Collection System Field Supervisor. The duties of
each level may be similar, but different in the level of difficulty or the experience needed
to perform certain work. The duties of the higher classification may be considerably
more technical or complex. Leadership and guidance are provided to the other
technicians on the team. Responds to citizen complaints, schedules meetings with
residents for educational purposes on the mowing of sewer easements and the cleaning
of sewer lines. Handles field correspondence for sewer easement violations; enforces
ordinances. Coordinates and creates work orders with other Collection System
employees and other Town departments.
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Solid Waste Division Manager
Performs difficult and responsible administrative work in overseeing refuse and
recycling collection and disposal activities for the Town. Supervision is exercised over
personnel and contracted operations. Develops a comprehensive solid waste
management program that includes household waste, yard waste, recyclables, business
waste, white goods, electronics, and oil. Ensures Town compliance with all state,
federal, and local rules, regulations, and laws pertaining to solid waste, yard waste and
recycling. Develops sanitation, yard waste and recycling collection routes and assigns
and directs the activities of the Town's refuse collection program. Oversees the
development of RFPs and contracts for recyclables, debris management, citizens'
convenience center and equipment.
Solid Waste Operations Coordinator (Solid waste work areas)
Performs difficult field supervisory and administrative work in overseeing the collection
and disposal of solid waste, yard waste and recyclables. Supervision is exercised over
subordinate personnel. Work also includes the supervision of the Town's Convenience
Center. Oversees and manages the daily solid waste, yard waste and recycling
collections operations; makes sure routes are collected and completed in an efficient
manner. Plans and organizes crews for the collection of solid waste, yard waste and
recyclables; adjusts in processes based on inclement weather and other interruptions in
normal schedules. Supervises the operations of the "business crew" engaged in the
collection of downtown business waste and special waste collections. Supervises the
operations of the Town's convenience site and yard waste site. Works with recycling,
yard waste and solid waste supervisors each day in assigning and adjusting crews.
Solid Waste Supervisor (Collection Truck Maintenance)
Performs responsible field supervisory work and administrative work in overseeing the
assignment of personnel and equipment in the collection of residential solid waste.
Supervision is exercised over Solid Waste Equipment Operators, Crew Leaders, and
Solid Waste Collectors. Supervises solid waste crew leaders, equipment operators and
collectors in the collection and disposal of trash and garbage; assigns daily tasks to
crews; makes sure routes are completed by the end of each day. Conducts quality
weekly route inspections and truck inspections; Oversees the cleaning, care, and
maintenance of equipment. Responds to hydraulic oil spills. Responds to residents'
complaints and requests.
Permit Requirements:
The Town will implement an operations and maintenance program that has as its goal
of preventing or reducing pollutant runoff from municipal operations including the Town
owned portion of the stormwater conveyance system. The Town trains employees to
prevent and reduce stormwater pollution from activities such as parks and open space,
fleet maintenance, new construction and land disturbances, and stormwater system
maintenance. Most of these are part of the facilities and have Stormwater Prevention
and Pollution Plans (SWPPP).
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Affected Operations:
• Parks and open space
• Buildings and ground maintenance
• Fleet maintenance
• Stormwater system maintenance
• Sanitary and water line maintenance
• Solid waste collection
• Yard waste and leaf collection
• New construction and land disturbances
• Road construction and maintenance
Facilities
• Operations Center A and B (Fleet/ Public Works / Utilities)
• Dixon Citizen Convenience Center
• Bond Park
• USA Baseball Park (Thomas Brooks Park)
• State Capital Soccer (Wake Med)
• Middle Creek
Drainage Service Requests Investigations
The Town has a 311-call center, which is a customer contact center that citizens can
call for information and services in the Town of Cary city limits and extra territorial
jurisdiction (ETJ). Citizens that observe flooding in the streets or their property, debris
blocking culverts or stormwater structures, Illegal discharges, or other issues related to
public infrastructure can either dial 311 or direct number to the center; but can also
submit an online request or email to 311. Citizens can call the Stormwater Division
directly, email or online reporting form for stormwater pollution.
Program Drivers:
The 311 program allows all citizens to participate in the upkeep of stormwater
infrastructure. Each citizen could report visible issues related to the system which allows
the stormwater division to have a better comprehensive list of issues from requests that
are made. This in turn provides a faster and more targeted approach to respond to the
citizens to address issues in the field or on the phone. The 311 program allows better
cross departmental collaboration.
Methods and Practices:
The Cary 311 call center typically receives 70 stormwater related calls per month. The
311-call center uses salesforce platform to enter in information on the call and can
forward it to the stormwater division for review or send to Public Works as a work order.
The 311 report is triaged and either answered by phone/email or setting up a site visit if
needed. The calls are handled through the call center staff and routed to the stormwater
group and contact is made within 24 hours of the report being sent to the stormwater
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group. Typical calls are handled by the Senior Stormwater Field Services Technician
(drainage, IDDE, technical assistance, erosion control) unless the call may require more
assessment and could become a stormwater capital project and is handled by the
Stormwater Project Managers. Then the project managers can visit the site and can see
if it requires more investigation using pole camera or CCTV to assess the stormwater
infrastructure(s) along with Public Works. 311 calls concerning erosion control and site
issues are forwarded to our two Stormwater Field Technicians who perform site visits on
active construction.
Calls are entered on Salesforce Cloud Platform software as a case number that allows
the calls to be handled throughout the process. Cases are taken in and are entered as
new and then are switched to in progress or closed depending on what is needed. The
resolution for the call is entered as well with pictures, emails, updates to other
departments, or correspondence with the case. The cases in stormwater are given a
category of stormwater and subcategories to indicate if IDDE, drainage, property
inquiry, easements, floodplain, environmental protection, buffers, construction sites, or
post construction to be able to track cases for reporting and trends. The cases are
permanently maintained in the platform.
Yard Waste Operations
Yard waste is handled by the Town in a curbside program or drop off at the Citizen
Convenience Center. The site is permitted to be a temporary staging area for debris.
The Town provides this service to the residents to drop off yard waste instead of waiting
for curb side pickup or have items that are over the size limit. The yard waste is held
temporarily until it can be placed in trucks to be hauled off. There is also household
waste, recycling, white goods, electronics, and scrap metal at the center. Hazardous
waste is not allowed and can be taken to the Southern Wake County landfill for proper
disposal.
Program Drivers
The yard waste drops off and curbside program allows citizens to drop off material from
lawn maintenance that would be piled up in open space owned by the HOA, natural
channels, or drainage, or on private property. This allows that material to be used as
compost and have a beneficial use for the waste.
Methods and Practices
The resident or Cary Solid Waste trucks can drop off material from curbside collection
that has a yard attendant directing traffic around the area. The attendants will move and
collect the yard waste to a pile to be hauled off. This allows debris to be picked up and
gathered to provide for composting with McGill Environmental and Brooks Contracting.
The contractor trucks are filled by the attendant and taken for composting along with
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street sweeping if needed. The facility has a SWPPP that addresses stormwater for the
site.
Street Sweeping
Street and parking lot sweeping is a practice that municipalities may have traditionally
conducted for aesthetic purposes. However, the water quality benefits for street and
parking lot sweeping are identified by the NC Nutrient Scientific Advisory Board
stormwater management standards as a pretreatment strategy for removing solids, as
well as the pollutants that become attached to sediment.
Several factors impact the effectiveness of a street sweeping program. The first factor is
the type of equipment used. When standard mechanical sweeping equipment needs to
be replaced, high-performance sweepers are purchased preferentially. Street sweeping
has traditionally been more effective at removing large-sized particles, but new
equipment has been developed to remove smaller, fine-grained particles. Mechanical
sweepers (broom-type) are usually the least expensive and are better suited to pick up
large-grained sediment. Vacuum and regenerative air sweepers are better at removing
fine-grained articles, but they are more expensive. Vacuum sweepers are also best
suited for cleaning pervious pavements.
The second factor influencing street sweeping effectiveness is the way in which the
equipment is operated. The equipment must be operated according to the
manufacturers' operating instructions by operators who have been properly trained to
sweep.
The third determining factor is the degree to which parked cars or similar blockages can
impede a sweeper's access to the curb.
The frequency of street sweeping is also a significant factor in removing sediments and
other pollutants from municipal streets.
Program Drivers
The Town wants to ensure clean streets and facilities through the street sweeping
program. The benefits are that organic loads can be reduced through street sweeping
and provides reduction credits with Nitrogen and Phosphorus removal. This assists with
Cary's commitment to ensure street sweeping is an ongoing integral program. The
Town maintains streets that are in the Town's jurisdiction. The sweeping of litter and
organic debris can reduce nitrogen, phosphorus and other contaminants that cling to
particles such as sand and grit from entering the storm drain system. Leaf litter is also
an issue to address during the fall. The Town has a loose-leaf program that starts in
November and runs through February. There are three times that the Town will pick up
loose leaves from residences within that time frame.
Methods and Practices
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Cary works with a contractor through public works who performs the street sweeping
program. The contractor has planned routes that it has within the Town. The areas of
Town are swept on an ongoing basis. The downtown thoroughfares are swept every
other week, major thoroughfares are swept monthly and all other areas residential
collector and side streets in Town are swept four times per year. In addition to this
schedule, they follow up behind the loose-leaf collection in neighborhoods that have
been picked up by vacuum trucks to pick up fine particulate left behind.
The sweepings are dropped off at the Dixon Citizen Convenience Center in a walled off
area marked for street sweeping. The sweepings have the litter removed and the
organic material is handled by the contractor with Brooks Contracting or McGill
Environmental for composting along with the yard waste that is dropped off at the
citizens convenience center.
Catch Basin and Inlet Inspection
Traditional municipal storm drain systems were designed to quickly collect and convey
stormwater runoff to receiving waters. The purpose of catch basin inspection is to
provide the Town with information on the condition of inlets and if there are trash and
litter issues that can affect water quality in the area.
Fine particles and pollutants generated by stormwater run-off, atmospheric deposition,
vehicle emissions, breakup of street surface materials, littering, and sanding
accumulate along the curbs of roads in between rainfall events. This results in the
accumulation of trash and sediment. Pollutants attach to trash and sediment. Storm
drain inspection and maintenance is often the first opportunity to provide pre-treatment
and remove pollutants before they are conveyed through the storm drain system through
the street sweeping program.
Program Drivers
The Town has a storm drain labeling program that allows citizens and groups to label
storm drains that are not stamped "Drains to waterway. Dump no Waste" in sections of
Town. As part of the program, they get a map of the system with each catch basin
identified. Then fill out a form at each storm drain indicating any defects on the grate or
frame. Then indicate any trash or debris in the storm drain box. If any defects are noted,
then the storm drain can be further investigated for repairs or cleaning if needed. The
forms are returned with the maps when labeling is completed for the area assigned.
The type of material found in the drain can help with education outreach in the area if
items are noted such as lawn waste, pet waste in bags, etc.
Methods and Practices
Inspections should include the condition of the inlet structure grate and storm inlet box.
As applicable, each stormwater inlet should include a public awareness message
(Dump no waste. Drains to waterways) stamped on the inlet hood or frame or otherwise
a decal is placed at the drain. Catch basins with illegible or missing labels should be
noted on the inspection report. Damage or deterioration threatening the structural
integrity of any component, conveyance or facility should be repaired as soon as
16

reported through 311 or by storm drain labeling program. The storm drain labeling
program provides labels, maps, gloves, brushes, and forms for the citizens. They take
the kit and label the mapped area and return the forms and maps along with leftover
supplies. The forms are reviewed and scanned along with maps to have for reporting
purposes.
Culvert Blockage Removal / Storm Drain Cleaning
Stormwater systems along all public roads are designed to capture stormwater runoff
that occurs during storm events. However, trash, heavy sediment, and other debris may
also make their way into these inlets and build up enough to cause flooding in the
adjacent roadway or damage to the inlets. The Town cleans the grates on top of catch
basins and inlets to maintain clear intakes so stormwater can continue flowing into the
systems and out of the roads.
Culverts are an integral part of the storm drain system. They carry water underneath
infrastructure such as roads and rail roads. If they are impacted in storm events and are
blocked, then it can cause water to back up and flood property or overtop the streets
and cause issues for emergency response vehicles and public at large. Also storm
drains that carry water from the roadway can be affected if they are blocked with debris
and backing up water on the street causing hazardous road conditions.
Program Drivers
In general, the operation of catch basin inlet inspection and cleaning is performed to
support the operation of the stormwater conveyance system to protect the traveling
public and reduce impacts associated with flooding. Clearing debris and trash from
stormwater inlets and gutters also reduce pollutant loading to surface waters.
Cary receives requests from homeowners and public through the 311-call center or
direct contact by phone or email. The Town also has high priority areas that are
checked by public works staff when severe weather is predicted such as a hurricane or
tropical storm that will produce a lot of rain. The culverts are checked and cleared if
needed.
Methods and Practices
The Town will address issues with blocked storm drains that get called into our 311-call
center and assign it as a work order for Public Works to investigate and clean off the top
if needed. For instances that an inlet is blocked the vac truck can be used to clean the
inlet and line to get free flowing again in the system. The street sweeping program is
integral in keeping the debris out of the inlets that lead to drainage issues and can
address most issues with the storm drain.
Town staff that are inspecting culverts as part of the GIS survey have a spread sheet
that is used to collect data for each culvert and will indicate the condition of the structure
17

for signs of failure. They also attach pictures of the upstream and downstream of the
culvert. As part of the program staff work with Public Works to also clear out vegetation
on top of the culvert which can cause issues with the function of the pipe or slope.
Structural Maintenance and Repair
Structural damage, flooding, and drainage issues reported from 311, or Town staff, are
assigned to the project managers investigate and may or may not be eligible for repairs
or assistance from the Town. If the request is determined to be eligible, there are certain
steps taken to address the issues so that the integrity of the Town-owned stormwater
system is maintained. The stormwater staff and public works staff have a monthly
meeting to discuss the projects that are ongoing, ones that are finished and under
warranty, and projects that need to be further investigated. That is a way of
collaborating to perform work and handle projects.
Program Drivers
Project managers ensure that maintenance and repairs are done on Town-maintained
structures to prevent small problems caused by damaged infrastructure from growing
into larger issues that could affect the local and downstream areas. These structures
are the confluence points for the network of systems across Cary and support the
operation of the stormwater conveyance system to function correctly.
Methods and Practices
The Town will create stormwater projects to repair structures and storm pipes that have
been inspected by pole camera or CCTV, and that are in the Right-of-Way. This type of
work includes repairing pipes or structures that have formed cracks or replacing their
entire structure if needed. Any hardscapes such as concrete curbs and gutters,
sidewalks or driveways that may become damaged in the process of repairing or
replacing stormwater structures are also repaired by the Town during construction.
Typically, the projects performed by the Town require a plan or design from that are
done by the Town's on call engineering firms or in house if small enough that the
AutoCAD tech can design. They are contracted out to construction firms if our public
works is not able to do the work. Town maintenance crews utilize small and large
machinery to complete the work order if done in house. At times, CCTV is used to
inspect underground work after work completion as well. The work can be tracked by
work order system in salesforce or by project name if needed to be designed and
constructed through a project manager.
18

Structural Asset Management Inspection:
The Town maintains a GIS map of the storm drain system located in the MS4. The
mapping consists of catch basins, inlets, outlets, storm drain network (size, material,
and length). This was put into the system by survey from contractors and record
drawings of the storm drain system on both public and private property. The storm drain
survey is included in our asset management program. There were items that need to be
addressed due to the nature of culverts in the system. As part of the ongoing effort to
ensure that the data that is being used in our management program the Town performs
inspections and this can lead to collecting accurate pipe size and material. It also allows
to inspect for defects that can have consequences if not repaired.
Bridges and stormwater culverts that convey stormwater under roads are vital to ensure
proper conveyance of stormwater runoff to surrounding water bodies and protect the
safety of the traveling public. Cary gets a two-person crew that inspects each culvert
system to generate data for the GIS system.
Program Drivers
The collection of accurate and correct data needs to be at the start of a program to
assess the assets that are in the ground. The program will allow the Town to assess the
MS4 system to show areas that need to be inspected and maintained due to age,
material, and size. The Town is adding information to the GIS system to put information
on the culverts in the system. They are usually not a circular pipe culvert but are arched
pipe or box culverts. The initial surveys did not provide information on the type, material,
and or size and getting new information is closing the gap.
Methods and Practices
Culvert inspections are assigned and two staff logs in the information during the
inspection, Staff performs a complete inspection including taking photos of the of the
upstream and downstream openings, measuring the system to help know information
for modeling, and to identify the location of any defects. The staff also inspects the
channels and headwalls as they enter and exit the culvert. If a culvert is inaccessible for
routine inspection due to size, blockages, sedimentation, observations by the team, or
other considerations, it is noted on the spreadsheet.
Winter Road Salt and Brine Application:
Winter Road Maintenance includes the management of equipment and facilities needed
to maintain roads for safe travel as well as the application of anti-icing and de-icing
materials. Municipalities want to ensure roads are as safe as possible for vehicle traffic.
Because of this, the tendency to think"more salt is better" can be difficult to overcome.
Several studies have shown that by using new techniques and equipment, roads can be
safer with less salt use.
19

Program Drivers
To ensure that the roads are clear and passable during ice and snow to help with
citizens, Town staff and emergency vehicles have a safe way to travel. Main
thoroughfares are treated with liquid brine and once snow falls and plowing is performed
then trucks are loaded with road salt.
Methods and Practices:
Cary typically treats road using both anti-icing and de-icing strategies. Anti-icing
activities involve applying a liquid brine solution to roads before a storm that prevents
snow and ice from binding to the pavement. De-icing is performed during and after
storms to remove ice and snow through plowing and applying additional materials to
the surface of the roads. Cary typically uses different materials to treat roads for snow
and ice as follows:
• Rock salt (De-icing)
• Liquid Brine (Anti-icing)
Winter maintenance teams can benefit from the following practices:
1. Use the Right Material. Use a chemical that is effective at current road surface
temperatures. Consider using alternate chemicals on bridges and in source
water protection areas.
2. Use the Right Amount. The number one factor in applying salt is the surface
temperature. Warmer roads need less salt. Consider purchasing inexpensive
infrared thermometers for spreading trucks.
3. Apply at the Right Place. Put salt down where it will do the best. Hills,
curves/corners, shaded sections of road, bridges, etc., need special attention.
A section of road with surface temp below 10°F will not benefit from rock salt.
Use another chemical instead.
4. Apply at the Right Time. Apply as early as possible! Obtain and use the most
up-to-date weather forecasts. Do not wait until snow is falling to get started. It
takes much more salt to melt accumulated snow than it does to prevent
accumulation. Factor in expected traffic, approaching day/night change in
temperatures, etc. Brine can be applied very early, forming a bond with the road
that can be effective for days in the right conditions.
The deicing material is stored in a covered shed at the Garmon Operations facility,
Dixon Convenience Center and at Jack Smith Park. They are strategically staged in
areas to keep travel time to a minimum.
Improper storage techniques can cause issues from stormwater runoff form areas around
the salt barns because they can result in highly concentrated runoff. Salt can cause
serious environmental issues.
Deicing chemicals (i.e., salt, calcium chloride, etc.) shall be stored in storage sheds or
20

tanks in a manner that minimizes the potential for runoff. All deicing chemicals shall be
covered when not in use. Sand piles shall be bermed to minimize runoff. During
handling, sand and salt which fall outside of the storage areas will be swept back to
the storage areas within 48 hours of the activity, to minimize runoff.
A properly stored salt/sand pile is:
• Located on a flat site.
• Located away from source water protection areas, floodplains, and wetlands.
• Sited on an impermeable (paved) pad, with a drain that directs runoff to proper
treatment.
• Covered with a roof and walls and a door to allow access when needed.
The Town performs an annual snow rodeo to get the entire public works and solid
waste crews that are part of the snow removal team to operate equipment and perform
a winter scenario. This helps prepare and coordinate teams as well as check for any
issues with the equipment that may need to be repaired.
During regular inspections, the salt and deicing chemical storage areas shall be
inspected by the facility coordinator in Public Works to ensure that runoff is minimized.
Town Owned Stormwater Control Measures (SCM) Maintenance:
An essential component of an effective municipal stormwater system is the ongoing
operation and maintenance of the various components of the stormwater drainage and
conveyance systems. Failure to provide effective maintenance of SCM's can reduce
the hydraulic capacity, the pollutant removal efficiency, and infiltration capacity of
stormwater practices. Stormwater management system Operation and Maintenance
Programs should address operation and maintenance concerns proactively instead of
reacting to problems that occur such as flooding or water quality degradation
associated with erosion, clogging or outright failure of one or more of the system
components. Proactively inspecting facilities and addressing concerns provides some
consistency in workflow and helps to avoid emergency situations.
There are three key components to adequately maintaining SCM's.
• Regularly scheduled inspections and maintenance by contractor
• Inspection by Town staff
• Require an annual third-party inspection using Town inspection forms.
Program Drivers
Cary maintains devices to ensure compliance with the SCM post construction program.
The Town wants to ensure that the 91 SCM's are maintained and operational them
through the Good Housekeeping program. The SCM's are a requirement of state
21

nutrient requirements (Neuse and Jordan Rules) that require treatment. The Town also
sizes them to meet our requirement for peak flow attenuation (2,5 and 10 year and now
100 year). Cary wants to ensure that we are doing what is required of the regulated
SCM's in its jurisdiction.
Methods and Practices
Cary has an annual contract (Dragonfly Pond Works) for the maintenance of SCM's and
lakes owned by the Town. These facilities are maintained monthly by the contractor
which ranges from trash removal, structural repairs (risers, inlets, and outlets), mowing
slopes and dams, reseeding bare areas. Staff receive a monthly report and then also
follow up to inspect the work that was required if any. The following types of devices are
located within the Town.
• Bioretention
• Wet Ponds
• Constructed Wetlands
• Dry Ponds
• Level Spreaders
• Grass Swales
• Vortex systems
• Sandfilter
• Scour Holes
• Underground Detention
Each device is visited monthly unless noted in the contract (regulated SCM's are
visited monthly). Standard maintenance is as follows:
• Treatment of nuisance vegetation in basin as needed and as permitted by
municipality.
• Control of unwanted vegetation on inlets, outlets, and spillway structures
• Maintenance of beneficial littoral plants and 3' shoreline buffer where
applicable, including treatment and removal of woody saplings
rom the buffer area
• Hand removal of accumulated silt from inlet and outlets, up to one 5-gallon
bucket per visit
• Removal of trash from basin
• Cleaning and inspecting drain, weirs, and riser.
• Visual inspection and documentation of inlet and outlet pipe condition
• Hand re-arranging of riprap at inlet and outlet where applicable (does not
include severe blowouts or installation of new rip rap)
• Monitoring for potentially harmful wildlife activity
• Monitoring conditions favorable to mosquito habitats and recommend
solutions.
22

• Visual inspection and photo documentation of condition of pond and pond
components
• Sand filters: treatment of unwanted vegetation in filter bed and raking of
sand surface layer.
• Level spreaders: Removal of sediment and organic debris along spreader
lip and gravel verge
• Bioretention: Rake and distribute existing mulch as needed; blow leaves
from filter bed in the fall.
• Professional recommendations related to the operation, appearance,
safety and/or compliance of the pond or lake.
A monthly report is sent to the Town and reviewed for any issues noted during the site
visit by the contractor that the Town should be aware of at the SCM. The contract allows
for work less than $500.00.
The sites are visited by stormwater staff at least once per year or if issues are noted on
the monthly report. The Town also has a contracted third-party inspector perform
inspections using the Town approved inspection form. We also have a form for Apex for
a pump station the Town operates as part of the Western Regional Wastewater
Reclamation Facility.
If inspections reveal and deficiencies, then the contractors will provide a quote and the
Town will address the issues and have the site reinspected. The inspections and
maintenance reports are maintained in our cloud file storage.
Employee Training
This component of the O&M Plan establishes the procedures for identifying, planning,
delivering, and tracking training. The training is provided to operations and
maintenance staff as necessary to maintain knowledge and skills that help ensure that
they understand their roles and responsibilities and can adequately perform their
duties as they relate to supporting the O&M Plan. Training is provided to employees
through three basic means:
1) Annual Good Housekeeping Training.
2) Spill Prevention and IDDE Training.
For those staff responsible for implementing the O&M program, on the job training will
be managed by stormwater staff or public works staff. He/she will manage and assign
training as described below.
The Town at a minimum, annually train all public works employees or other employees
23

involved in the implementation of the O&M program about the program. The Town of
Cary shall report on the frequency and type of employee training in the annual
report.
Measurement of Operation and Maintenance Program
The success of the O&M program will be measured by each of the elements outlined in
the previous sections. Specifically, the following benchmarks will be used:
• Number of Catch Basins inspected annually.
• Number of street miles of street sweepings conducted annually.
• Number of municipally owned parking lots swept annually.
• Number of stormwater Best Management Practices inspected and maintained.
• Number of repairs to storm drain system
• Amount of salt and brine used annually.
• Training: Number of Employees trained
24

ATTACHMENT A
TOWN OF CARY SCMS AND DAMS
FACILITY DEVICE NO. ADDRESS MAINTENANCE ANNUAL INSPECTION BY ENGINEER REQUIRED
1 Apex Water Tower Bioretention&Swale 2 1431 Old Apex Road YES YES(Bioretention Only)
2 Beaver Creek Pump Station Wet Pond 1 2916 Olive Chapel Road YES YES(APEX NC FORM ALSO)
3 Bond Park Level Spreader 1 W.end of Metro Park Dr.(Parking Lot) YES YES
4 Carpenter Park Wet Pond 1 4420 Louis Stephens Rd YES YES
5 Cary Arts Center Bioretention 5 100 Dry Ave YES YES
6 Cary Commons Extended Detention Wetland 1 760 SE Maynard&Walnut(Behind Barnes and Noble) YES YES
7 Davis Drive School Dry detention 2 S.of 2101 Davis Drive YES NO
Dunham Park Constructed wetland 1 519 Walnut Street YES NO
8 Evans Road SCM Double Swales 1 1138 Evans Rd(Between headwalls only) YES YES
9 Faculty Avenue Bioretention 1 408 Faculty Ave. YES YES
10 Field St.Water Tower Dry Detention 1 330 Field Street YES YES
11 Fire Station#2 Bioretention 2 601 E.Chatham St. YES YES
12 Fire Station#7 Swale(wetland plants) 1 6900 Carpenter Fire Sta Rd YES YES
Sand Filter Underground 1 YES YES
13 Fire Station#8 Dry Detention 2 408 Mills Park Drive YES YES
Level spreader 1 YES YES
14 Godbold Park Wetland 1 2040 NW Maynard Rd(Below basketball court) YES YES
15 Higgins Trail (6x/yr) Wetlands 14 905 W.Chatham to Maynard Rd YES
16 Kildaire Farm Rd Wetland 1 2662 Kildaire Farm Rd(south of Hemlock Bluffs entrance YES YES
17 Lake Drive Level Spreader 1 Bend in road at 215 Lake Dr YES YES
18 Mills Park Bioretention 1 Mills Park Dr(Bus entrance to Middle School) YES YES
Wetlands 1 Mills Park Dr(across from Bus entrance) YES YES
Dry Pond/Sandfitler/Level Spi 3 End of Mills Park Dr(across from elementary school) YES YES
19 New Hope Ch Rd Park Dry Detention 1 2575 New Hope Church Rd. YES YES
20 Ops Center Wet Pond 1 420 James Jackson Ave. YES YES
Wetland 1 400 James Jackson Ave. YES YES
21 Regency Amphitheatre Dry Pond 1 8003 Regency Parkway YES YES
Level Spreader 1 YES YES
22 Sears Farm Rd.Park Dry Detention 2 5060,5080 Sears Farm Road YES YES
Level Spreader 1 5080 Sears Farm Road YES YES
23 SK8 Park Dry Detention 1 2040 NW Maynard Road YES YES
24 Smith Park Bioretention 4 9725 Penny Rd. YES
Level Spreader 1 YES
25 State Cap.Soccer Pk Wetlands 1 950 E.Chatham St. YES YES
Dry Detention 1 YES YES
26 Symphony Lake Wet Pond&dam 1 18003 Regency Parkway YES YES
27 Terrington Pump Sta Bioretention 1 5956 Terrington Lane YES YES
Wetland 1 YES YES
28 IT H Parking Garage N-Bio,S-Bio 2 121 Wilkinson Avenue YES YES
30 Tryon Lake Wet Pond 1 Tryon Rd @ Brisbane Wds Rd YES YES
31 Tryon Road(6x/yr) Level Spreader/PFSH 4 Walnut to Kildaire YES NO
32 USA Baseball Wet Pond w/biofilters 1 100 Brooks Park Lane YES YES
33 Walnut Park Bioretention 2 1420 Walnut/Lawrence YES YES
34 West Cary Pump Station Wet Pond 1 3905 Green Level West Road YES YES
36 White Oak Park Bioretention 1 11216 Jenks Carpenter Road YES NO
TOTAL 77
DAM NAME ADDRESS
Symphony Lake 8051 Regency Parkway
Tryon Lake Tryon Road/Brisbane Woods Wy
Carpenter Park 4420 Louis Stephens Drive
Twin Lakes Lake Grove Blvd/Davis Drive

Facility A Device Number of Devices Address Annual Inspection . No.of Visits $Per Visit $Per Year
1 Apex Water Tower Bioretention&Swale 2 1431 Old Apex Road Yes(Bio only) 12 $ 237.00 $ 2,844.00
2 Beaver Creek Pump Station Wet Pond 1 2916 Olive Chapel Road Yes(Apex NC form also) 12 $ 190.00 $ 2,280.00
3 Bond Park Level Spreader 1 W.End of Metro Park Drive(Parking Lot) YES 12 $ 211.00 $ 2,532.00
4 Carpernter Park Wet Pond 1 4420 Luis Stephens Drive YES 12 $ 606.00 $ 7,272.00
5 Cary Arts Center Bioretention 5 100 Dry Ave YES 12 $ 528.00 $ 6,336.00
6 Cary Commons Extended Detention Wetland 1 760 SE Maynard and Walnut YES 12 $ 632.00 $ 7,584.00
7 Davis Drive School Dry Detention 2 S.Of 2101 Davis Drive NO 12 $ 398.00 $ 4,776.00
8 Evans Road SCM Double Swales 1 1138 Evans Road(Between Headwalls only) YES 12 $ 268.00 $ 3,216.00
9 Faculty Drive Bioretention 1 408 Faculty Drive YES 12 $ 206.00 $ 2,472.00
10 Field Street Water Tower Dry Detention 1 330 Field Street YES 12 $ 300.00 $ 3,600.00
11 Fire Station#2 Bioretention 2 601 E Chatham Street YES 12 $ 268.00 $ 3,216.00
12 Fire Station#7 Swale(wetland plants) 1 6900 Carpenter Fire Station Road YES 12 $ 528.00 $ 6,336.00
Sand Filter Underground 1 YES 12 $ - $ -
13 Fire station#8 Dry Detention 2 408 Mills Park Drive YES 12 $ 580.00 $ 6,960.00
Level Spreader 1 YES 12 $ - $ -
14 Godbold Park Wetland 1 2040 NW Maynard Road(Below Basketball Court) YES 12 $ 166.00 $ 1,992.00
15 Higgins Trail Wetlands 14 905 W.Chatham to Maynard NO 6 $ 432.00 $ 2,592.00
16 Kildaire Farm Road wetland 1 2662 Kildaire Farm Road(South of Hemlock Bluffs Entrar YES 12 $ 242.00 $ 2,904.00
17 Lake Drive Level Spreader 1 Bend in Road at 215 Lake Drive YES 12 $ 102.00 $ 1,224.00
18 Mills Park Bioretention 1 Mills Park Dr(Bus entrance to middle school YES 12 $ 295.00 $ 3,540.00
Wetlands 1 Mills Park Dr(Across from bus entrance) YES 12 $ 315.00 $ 3,780.00
Dry Pond,Sand Filter,Level Spred 3 End of Mills Park Drive(Across from elementary School)YES 12 $ 295.00 $ 3,540.00
19 New Hope Church Road Dry Detention 1 2575 New Hope Church Road YES 12 $ 216.00 $ 2,592.00
20 Ops Center Wet Pond 1 420 James Jackson Ave. YES 12 $ 450.00 $ 5,400.00
Wetland 1 400 James Jackson Ave. YES 12 $ 393.00 $ 4,716.00
21 Regency Amphitheatre Dry Pond 1 8003 Regency Parkway YES 12 $ 92.00 $ 1,104.00
Level Spreader 1 YES 12 $ 76.00 $ 912.00
22 Sears Farm Road Park Dry Detention 2 5060,5080 Sears Farm Road YES 12 $ 398.00 $ 4,776.00
Level Spreader 1 5080 Sears Farm Road YES 12 $ 112.00 $ 1,344.00
23 S1<8 Park Dry Detention 1 2040 NW Maynard Road YES 12 $ 154.00 $ 1,848.00
24 Smith Park Bioretention 4 9725 Penny Road NO 12 $ 268.00 $ 3,216.00
Level Spreader 1 NO 12 $ 102.00 $ 1,224.00
25 State Cap.Soccer Park Wetlands 1 950 E Chatham Street YES 12 $ 216.00 $ 2,592.00
Dry Detention 1 YES 12 $ 138.00 $ 1,656.00
26 Symphony Lake Wet Pond&Dam Face 1 8003 Regency Parkway YES 12 $ 270.00 $ 3,240.00
Back side of Dam 1 8 $ 468.00 $ 3,744.00
27 Terrington Pump Station Bioretention 1 5956 Terrington Lane YES 12 $ 108.00 $ 1,296.00
Wetland 1 YES 12 $ 108.00 $ 1,296.00
28 T H Parking Garage N-bio,S-Bio 2 121 Wilkinson Avenue YES 12 $ 435.00 $ 5,220.00
29 Tryon Lake Wet Pond 1 Tryon Road at Bisbane Woods Road YES 12 $ 567.00 $ 6,804.00
30 Tryon Road LS 1 Level Spreader 1 101 Thornewood Dr NO 6 $ 238.00 $ 1,428.00
Tryon Road LS 2 Level Spreader 1 Wellingborough Dr,North of Tryon Rd 6 $ - $ -
31 Tryon Rd-Speight Branch LS Level Spreader 1 Speight Branch Greenway,South of Tryon Rd No 2 $ - $ -
32 Tryon Road PFSH Pre-Formed Scour Hole 1 103 Autumn Circle No 2 $ - $ -
33 Twin Lakes Dam Mowing 674 Tranquil Sound Dr YES 6 $ 2,081.00 $ 12,486.00
34 USA Baseball Wet Pond with biofilters 1 100 Brooks Park Lane YES 12 $ 330.00 $ 3,960.00
35 Walnut Park Bioretention 1 1420 Walnut/Lawrence YES 12 $ 138.00 $ 1,656.00
Bioretention 1 12 $ 125.00 $ 1,500.00
36 West Cary Pump Station Wet Pond 1 3905 Green Level West Road YES 12 $ 190.00 $ 2,280.00
37 White Oak Park Bioretention 1 1216 Jenks Carpenter Road NO 12 $ 112.00 $ 1,344.00
38 Green Level High School Bioretention 1 7600 Roberts Rd(Near Trailhead) NO 12 $ 112.00 $ 1,344.00
39 Dunham Park Wetland 1 519 Walnut St,Cary,NC 27511 NO 12 $ 300.00 $ 3,600.00
79

Dragonfly Pond Works
PO BOX 32637
Charlotte,NC 28232-2637
877 766 3979 Telephone draanfl
General Contractor License No:83018 Y
Proposal
PON WORK'S
May 27,2022
Proposal No:3381
Submitted To Project
Eric Kulz Town of Cary SCM and Dam Maintenance
Town of Cary 316 North Academy Street
316 N.Academy Street PO Box 8005
Cary,NC27513 Cary,NC 27512
On behalf of:Town of Cary SCM and Dam
Maintenance
Hereinafter collectively referred to as"Client"or
"Owner."
Annual Maintenance
Standard maintenance program includes:
• Treatment of nuisance vegetation in basin as needed and as permitted by municipality
• Control of unwanted vegetation on inlets,outlets,and spillway structures
• Maintenance of beneficial littoral plants and 3'shoreline buffer where applicable,including treatment and removal of woody saplings
from the buffer area
• Hand removal of accumulated silt from inlet and outlets,up to one 5-gallon bucket per visit
• Removal of trash from basin
• Cleaning and inspecting drain,weirs,and riser
• Visual inspection and documentation of inlet and outlet pipe condition
• Hand re-arranging of riprap at inlet and outlet where applicable(does not include severe blowouts or installation of new rip rap)
• Monitoring for potentially harmful wildlife activity
• Monitoring conditions favorable to mosquito habitats and recommend solutions
• Visual inspection and photo documentation of condition of pond and pond components
• Sand filters:treatment of unwanted vegetation in filter bed and raking of sand surface layer
• Level spreaders: Removal of sediment and organic debris along spreader lip and gravel verge
• Bioretentions: Rake and distribute existing mulch as needed;blow leaves from filter bed in the fall
• Professional recommendations related to the operation,appearance,safety and/or compliance of the pond or lake
Includes:
• Maintenance and mowing of 79 stormwater devices,lakes,and dams as specified in the attached spreadsheet
Visits/Year 12
Cost/Visit 13,464.50
Total/Year 161,574.00
Proposal Total 161,574.00