HomeMy WebLinkAboutCapacity, Management, Operation and Maintenance (CMOM) Program Manual (PDF)Hazen and Sawyer
24 Federal Street, 5th Floor
Boston, MA 02110
Town of Nantucket Sewer Department
Capacity, Management, Operation and
Maintenance (CMOM) Program Manual
Nantucket, Massachusetts
Updated March 2019
Nantucket, MA
CMOM Program Manual
| Table of Contents i
This Page Intentionally Left Blank for Printing Purposes
Nantucket, MA
CMOM Program Manual
| Table of Contents ii
Table of Contents
Introduction ..................................................................................................................... 1
1. System Overview ................................................................................................... 1-1
1.1 Town Collection System .......................................................................................................... 1-1
1.2 Siasconset Collection System ................................................................................................. 1-2
2. Collection System Management ............................................................................ 2-1
2.1 Goals ........................................................................................................................................ 2-1
2.2 Organizational Structure .......................................................................................................... 2-1
2.3 Training .................................................................................................................................... 2-3
2.4 Internal Communications and Customer Service .................................................................... 2-5
2.5 Geographic Information Systems (GIS) ................................................................................... 2-5
2.6 Management Information Systems .......................................................................................... 2-7
2.6.1 Work Orders ............................................................................................................................. 2-7
2.6.2 Collection System Data............................................................................................................ 2-7
2.6.3 Asset Management .................................................................................................................. 2-7
2.7 Management of Sanitary Sewer Overflows (SSOs) ................................................................ 2-7
2.8 Legal Authority ......................................................................................................................... 2-8
2.9 Budgeting ................................................................................................................................. 2-8
3. Collection System Operation ................................................................................. 3-1
3.1 Hydrogen Sulfide Monitoring and Control ................................................................................ 3-1
3.2 Safety ....................................................................................................................................... 3-1
3.3 Mapping ................................................................................................................................... 3-2
3.3.1 GIS Mapping ............................................................................................................................ 3-2
3.3.2 Record Plans ........................................................................................................................... 3-3
3.4 Engineering and Construction ................................................................................................. 3-3
4. Pump Stations ....................................................................................................... 4-1
4.1 Pump Station Locations and Equipment.................................................................................. 4-3
4.2 Pump Station Alarms ............................................................................................................... 4-9
4.3 Pump Station Inspections ........................................................................................................ 4-9
4.4 Mechanical and Electrical Maintenance ................................................................................ 4-10
Nantucket, MA
CMOM Program Manual
| Table of Contents iii
4.5 Forcemain Maintenance ........................................................................................................ 4-10
4.6 Corrosion Control ................................................................................................................... 4-11
4.7 Non-Sewer Department Owned Pump Stations .................................................................... 4-11
5. Collection System Maintenance ............................................................................. 5-1
5.1 Right-of-Ways and Easements ................................................................................................ 5-1
5.2 Root Control ............................................................................................................................. 5-1
5.3 Sewer Cleaning ........................................................................................................................ 5-1
5.4 Parts and Equipment Inventory ............................................................................................... 5-2
6. Collection System Testing and Inspection ............................................................. 6-1
6.1 CCTV Inspections .................................................................................................................... 6-2
6.1.1 Manhole Inspections ................................................................................................................ 6-4
6.1.2 Sewer Pipe Inspections ........................................................................................................... 6-5
6.2 Infiltration and Inflow ................................................................................................................ 6-5
7. Collection System Capacity Analysis ..................................................................... 7-1
7.1 Sewer System Model ............................................................................................................... 7-1
8. Sewer System Rehabilitation ................................................................................. 8-1
8.1 CCTV Inspections .................................................................................................................... 8-1
8.2 Capacity Analysis Report ......................................................................................................... 8-2
8.3 Infiltration and Inflow Report .................................................................................................... 8-2
8.4 Pipe Rehabilitation Options ..................................................................................................... 8-2
8.4.1 Trenchless Technology ............................................................................................................ 8-2
8.4.2 Open Cut Repair ...................................................................................................................... 8-3
8.5 Manhole Rehabilitation ............................................................................................................ 8-3
8.6 Additional Rehabilitation and Maintenance Programs ............................................................. 8-3
Nantucket, MA
CMOM Program Manual
| Table of Contents iv
List of Tables
Table 1-1 Town Sewer District Data ........................................................................................... 1-2
Table 1-2 Siasconset Sewer District Data .................................................................................... 1-3
Table 3-1 Safety Equipment Inventory ........................................................................................ 3-2
Table 4-1 Pump Stations Maintained by NSD ............................................................................. 4-1
Table 4-2 Airport Rd Pump Station Equipment .......................................................................... 4-3
Table 4-3 South Valley Pump Station ......................................................................................... 4-3
Table 4-4 Monomoy South Pump Station (Upgraded 2018) ....................................................... 4-4
Table 4-5 Monomoy North Pump Station ................................................................................... 4-4
Table 4-6 Cato Lane Pump Station .............................................................................................. 4-5
Table 4-7 Aurora Way Pump Station........................................................................................... 4-5
Table 4-8 Pine Valley Pump Station ............................................................................................ 4-6
Table 4-9 Surfside Road Pump Station ........................................................................................ 4-6
Table 4-10 Sachems Path Pump Station ...................................................................................... 4-7
Table 4-11 Sherburne Commons Pump Station........................................................................... 4-7
Table 4-12 Abrem Quarry Pump Station ..................................................................................... 4-8
Table 4-13 Sea Street Pump Station ............................................................................................ 4-8
Table 5-1 Equipment Inventory ................................................................................................... 5-2
List of Figures
Figure 1-1 Town Sewer Collection System. ................................................................................ 1-4
Figure 1-2 Siasconset Sewer Collection System ......................................................................... 1-5
Figure 2-1 Nantucket Sewer Department Organizational Chart .................................................. 2-3
Figure 2-2 Nantucket GIS Screenshot ......................................................................................... 2-6
Figure 3-1 Sewer Extension/Connection Permitting Process ...................................................... 3-5
Figure 4-1 Airport Road Pump Station Site Location ................................................................. 4-3
Figure 4-2 South Valley Pump Station Site Location .................................................................. 4-3
Figure 4-3 Monomoy South Pump Station Site Location ............................................................ 4-4
Figure 4-4 Monomoy North Pump Station Location ................................................................... 4-4
Figure 4-5 Cato Lane Pump Station Site Location ...................................................................... 4-5
Figure 4-6 Aurora Way Pump Station Site Location ................................................................... 4-5
Figure 4-7 Pine Valley Pump Station Site Location .................................................................... 4-6
Figure 4-8 Surfside Road Pump Station Site Location ................................................................ 4-6
Figure 4-9 Sachems Path Pump Station Site Location ................................................................ 4-7
Figure 4-10 Sherburne Commons Pump Station Site Location ................................................... 4-7
Figure 4-11 Abrem Quarry Pump Station Site Location ............................................................. 4-8
Figure 4-12 Sea Street Pump Station Site Location..................................................................... 4-8
Figure 6-1 Town Area Sewershed ............................................................................................... 6-7
Figure 6-2 Siasconset Area Sewershed ........................................................................................ 6-8
Figure 7-1 Shimmo Capacity Analysis Sewershed Model .......................................................... 7-3
Nantucket, MA
CMOM Program Manual
| Table of Contents v
List of Appendices
Appendix A: Templates for Sewer Complaints
Appendix B: SSO Forms
Appendix C: Checklist for Proposed Expansion of Sewer District
Appendix D: Application for Permit for Sewer Extension
Nantucket, MA
CMOM Program Manual
| Introduction 1
Introduction
Sanitary sewer collection systems have a finite capacity to carry wastewater to a treatment facility. The
system’s capacity is based on the size of the system components and the flow they were designed to
accommodate. Over time, the factors which influenced the systems basis of design may change for a
variety of reasons. These factors can include population increase beyond the growth factor used in the
design basis, deterioration of system’s structural integrity resulting in an unacceptable inflow and
infiltration (I/I) rate, and illicit stormwater connections, all of which result in flows in excess of the
designed capacity. Such changes can lead to overflows from the system if the increased flows exceed the
ability of the collection system or pump stations to transport the wastewater.
Failure to maintain the collection system can also result in overflows irrespective of any flow increase.
Materials such as grease, rags, roots and other foreign objects can create blockages within the system
which force wastewater to find alternate sources of relief. Overflows, regardless of the cause, release
untreated sewage to surface waters, at times leading to substantial negative impacts on the receiving body.
Sanitary sewage overflows (SSO’s) have been known to contribute to environmental violations, fish kills
and closures of recreational waters. Regular maintenance including inspection and cleaning regimens can
minimize/eliminate these occurrences particularly those due to grease or sediment buildup and root
development.
In order to comply with MassDEP Permit # 200-3, US EPA Region 1 AOC, and mitigate SSO’s in their
collection system, the Town of Nantucket, Massachusetts has developed the following Capacity,
Management, Operation, and Maintenance (CMOM) Program that will result in enhanced collection
system operation and reliability, as well as environmental compliance. This CMOM Program Manual
outlines the Town’s current and planned maintenance activities which will make up the CMOM program.
This is the first version of the CMOM Program Manual, which is a working document. It will evolve as
the Town continues to upgrade its collection system components, implement asset management programs
and streamline operations. Ongoing modifications to this CMOM Program Manual will be submitted to
Massachusetts Department of Environmental Protection (MassDEP) and the Environmental Protection
Agency (EPA) on an annual basis.
The Town of Nantucket owns and operates two separate and distinct collection systems; the Town
Collection System and the Siasconset Collection System. Flows from the Town collection system are
conveyed to and treated at the Surfside Wastewater Collection Facility and flows from the Siasconset
collection system are conveyed to and treated at the Siasconset Wastewater Treatment Facility. Both
facilities are operated and maintained by the Town of Nantucket’s Sewer Department. This CMOM
Program Manual covers both collection systems, since they are both operated and maintained by the
Town’s Sewer Department.
Nantucket, MA
CMOM Program Manual
| System Overview 1-1
1. System Overview
The Town of Nantucket owns and operates approximately 70 miles of sanitary sewer in two distinct
collection systems: Town and Siasconset. Wastewater in the Town Collection System is conveyed to the
Surfside Wastewater Treatment Facility and wastewater in the Siasconset Collection System is conveyed
to the Siasconset Wastewater Treatment Facility. The Town’s Comprehensive Wastewater Management
Plant (CWMP) has determined other areas of the island for growth that could expand these collection
systems or create new systems with alternative treatment. Currently, the Town is updating its CWMP for
the Siasconset area of the Island which will also identify growth of the existing collection system.
The system includes gravity sewers, forcemains and pump stations. The collection system and
wastewater treatment facilities serve the Town’s year-round population of 15,000, as well as, the demands
of the peak season population of approximately 100,000. Nantucket’s collection system is separated.
During CCTV (Closed Circuit Television) Inspections, any cross connections will be noted and reported
in future updates to this Program Manual. The system consists of 1,302 manholes and pipes ranging in
size from 8 inches in diameter to 30-inches in diameter. A variety of materials, including PVC, vitrified
clay, reinforced concrete, asbestos cement, and HDPE, and cast iron make up the system. As part of the
CCTV inspections, the pipe material and diameter will be updated in the Town’s GIS database.
There are also 12 publicly owned pumping stations in the Town of Nantucket, with a thirteenth (13th)
coming online in FY2018. Of the 12 pump stations, the largest is the Sea Street Pump Station, which is
currently undergoing an upgrade to include a new SCADA system and larger pumps, as well as other
items. There is one privately owned pump station in the Siasconset Sewer District, which conveys very
little flow to the gravity portion of the system.
The Nantucket Harbor Shimmo and Plus Parcels Sewer Extension Project, nearing completion in March
2019, will add the following infrastructure to the collection system:
· 9,000 LF of new gravity sewer
· 4,000 LF of replacement gravity sewer
· 31,000 LF of new low-pressure sewer
· 5,000 LF of new forcemain sewer
· 1 new pump station (Wamasquid)
· 1 upgraded pump station (Monomy)
This project is discussed further in Section 1.1.
1.1 Town Collection System
The Town’s primary WWTF, called Surfside, was constructed in the 1980s and upgraded in 2009. The
Surfside WWTF provides biological treatment to a daily flow of up to 7.7 MGD. The Town Collection
System consists of approximately 60 miles of gravity sewer, 12.4 miles of force main and 15 pump
Nantucket, MA
CMOM Program Manual
| System Overview 1-2
stations. Sea Street Pump Station is the largest pump station on the Island and conveys 85 percent of the
Town’s flow to the Surfside WWTF.
The Nantucket Harbor Shimmo and Plus Parcels Sewer Extension Project, nearing completion in March
2019, will add the following infrastructure to the collection system:
· 9,000 LF of new gravity sewer
· 4,000 LF of replacement gravity sewer
· 31,000 LF of new low-pressure sewer
· 5,000 LF of new forcemain sewer
· 1 new pump station (Wamasquid)
· 1 upgraded pump station (Monomoy South)
This project will provide service to properties in the Shimmo, Meadow View Drive, Bayberry Lane,
Tashama/Maclean Lane, and Green Meadows Drive neighborhoods via gravity and low-pressure sewer.
To convey flow to the Town Sewer District, one new pump station will be installed on Wamasquid Drive
and the Monomoy South Pump Station will be upgraded to accommodate additional flow. The new pump
stations are discussed in further detail in Section 4.
Flow will be conveyed through the low-pressure sewer via grinder pumps, which will be provided to
homeowners via the construction contract. As is the standard policy on the island, the NSD does not own,
operate, or maintain the grinder pumps on private property.
Table 1-1 Town Sewer District Data
Treatment Facility Name Surfside Wastewater
Treatment Facility
Peak Design Capacity 7.7 MGD
Average Daily Design Flow 4.0 MGD (April-Oct) Tourist Season
1.1 MGD (Nov- March) Off-Season
Percentage of Combined Sewer UNK
Miles of Gravity Sewers 60 (additional 1.7 miles coming in FY 2018)
Miles of Force Mains 12.4 (additional 0.95 miles coming FY2018)
Number of Pump Stations 14 (includes new Wamasquid PS to be added in 2018)
Number of Manholes 1,168
Figure 1-1 Illustrates the Town’s sewer collection system.
1.2 Siasconset Collection System
A second, smaller WWTF was built to treat flow from the Siasconset Sewer District. The treated effluent
is discharged to infiltration sand beds at Low Beach. This second WWTF came online in 2004 and treats
a daily flow of up to 0.43 MGD. This plant experiences fluctuations in flow dependent on wet weather
events and seasonal population changes. Average Day Flows can range from approximately 10,000 GPD
Nantucket, MA
CMOM Program Manual
| System Overview 1-3
to nearly 400,000 GPD. The Siasconset Collection System consists of about 8.81 miles of gravity sewer
owned and operated by the NSD (Nantucket Sewer Department). The collection system also has one
privately owned pump station and 0.35 miles of privately owned forcemain.
Table 1-2 Siasconset Sewer District Data
Treatment Facility Name Siasconset Wastewater Treatment Facility
Peak Design Capacity 0.43 MGD
Average Daily Design Flow 0.055 MGD (April – October) Tourist Season
0.010 MGD (Nov – March) Off Season
Percentage of Combined Sewer UNK
Miles of Gravity Sewers1 8.81
Miles of Force Mains1 0.35
Number of Pump Stations 1 (privately owned and operated)
Number of Manholes2 134
Figure 1-2 illustrates Siasconset’s sewer collection system.
0 10 205 Miles
C L I F F R D
POLPIS RDSURFSIDE RDCOATUE AVMILESTONE RD
MADAKET RD
OLD SOUTH RD
SOMERSET RDLOVERS LNMIACOMET RDHUMMOCK POND RDORANGE ST
M IL K S T
S SHORE RDB A R T L E T T R D
W CHESTER ST
WAYBOULEVARDE
PLEA
SA
N
T S
T
CATO LNV E S T A L S T SHAWKEMO RDHULBERT AV
RUGGED RDMIACOMET AVU
NIO
N S
T
MONOMOY RDSKYLINE DR
FIELD AVDUKES R D
VESPER LN
FAIRGROUNDS RDE A S T O N S T
HOOPER FARM RDNEW LNW MIACOMET RD BUNKER RDGARDNER RDMADEQUECHAM VLY RD
FIRST WY
PEQUOT STUNKNOWN
CROOKED LNI N D I A S T
HINSDALE RDBREWSTER RDS VALLEY RDNOBADEER AV
DAFFODIL LN
POND VIEW DR
A
H
A
B D
R
WASHING POND RD
PROPRIETORS WYBURNT SWAMP LN KELLEY RDPLUM STKIMBALL AV
POND RD
DEER RUN RD
UNKNOWNFigure 1-1 Town SewerCollection System
±
0 10 205 Miles
POLPIS RD
MILESTONE RD BAXTER RDWAYQUIDNET RD
SANKATY RDL Y O N S L N
TOM NEVERS RD LOW BEACH RDCHUCK HOLLOW RDUNKNOWNNEW SIAS ST
LONG
WOOD DR
C HASE LN
MOREY LNA
L
M
A
N
A
C
K
P
O
N
D R
D
HOICKS HOLLOW RDCLIFTON ST
WO
O
D
H
O
L
L
OW
R
D
COFFIN SIAS STSANKATY HEAD RDH
E
A
T
H
L
N WINDSOR RDSTONE POST WYWAYFigure 1-2 Siasconset SewerCollection System
±
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-1
2. Collection System Management
2.1 Goals
The Town of Nantucket has developed this Operation and Maintenance (O&M) Program Manual to
document the ideas, concepts, Best Management Practices and procedures used to enhance the efficiency
and reliability of the Town’s collection system. The goals of the plan are to:
· Prevent sanitary sewer overflows (SSO’s) to the greatest extent practicable
· Organize the Town’s personnel and equipment through a regular collection system maintenance
program and SSO emergency response plan
· Develop a system to assess and prioritize maintenance, rehabilitation and replacement activities
for the collection system
· Ensure the efficient, economic, environmentally sound transport of wastewater to the Town’s
wastewater treatment facilities
· Ensure environmental compliance
· Prevent the interruption of wastewater transport service
· Transition from reactive to preventative maintenance activities
2.2 Organizational Structure
The operation and maintenance of the Town of Nantucket’s Wastewater Treatment Facilities (WWTFs)
and wastewater collection system falls under the responsibility of the newly founded Nantucket Sewer
Department (NSD). The NSD was recently created, having become official on November 14, 2016 and
opened the Department’s Office on April 10, 2017. The NSD has plans to hire additional administrative
staff in FY 19.
The NSD employs 17 full-time employees responsible for the operation and maintenance activities related
to the Town’s WWTF, collection system, and remote facilities. In 2018, a staff engineer, and two new
operators were hired, as well as an office administrator. The NSD also saw a change in the Chief Operator
position in 2018 when Kevin Manning was appointed to the position.
The NSD and the Town’s Human Resource Department is currently writing new job descriptions for NSD
positions as previously all sewer staff reported to the Department of Public Works Director. Job
descriptions will be updated in subsequent manual updates. The following are current staff descriptions:
· Sewer Director - Plans and supervises the review of the design, permitting, construction, and
maintenance of municipal wastewater facilities and properties as well as projects proposed to
the town and town boards and committees as directed. The Director reports directly to the
Town Manager.
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-2
· Chief Operator – Responsible for all phases of treatment plan operations at both treatment plants
to ensure that the DEP discharge permits are met. The chief operator reports to the Sewer
Director.
· Assistant Chief/Chief Mechanic – Assistant Chief/Chief Mechanic is capable of assuming
responsibilities of the chief operator in his absence. The Assistant Chief Operator reports to the
Chief Operator. The chief operator reports to the Sewer Director.
· Lead Operator – Lead operator at the Siasconset Wastewater Treatment Facility and capable of
assuming responsibilities of the chief operator in his absence. The Lead Operator reports to the
Chief Operator.
· Laboratory Manager – Responsible for all sampling and the analysis at the Surfside WWTF as
well as the analysis at the Siasconset WWTF that are performed in the surfside laboratory.
Responsible for all maintenance and quality assurance and quality control pertaining to the lab.
Required to provide selective samples to be tested off-island by a certified lab for QA/QC
purposes. Recommends needed daily processes and changes for both facilities, and responsible
for implementing such changes. The Lab Manager reports to the Chief Operator and Sewer
Director.
· Mechanics – Responsible for all preventative and corrective maintenance at both facilities and the
pump stations. These personnel should hold wastewater licenses and be capable of operation
both facilities. The Mechanics report to the Chief Operator.
· Working Foreman Operators – Supervise and work with plant staff to ensure proper operation of
both facilities. Responsibilities include monitoring pump station operations, monitoring and
performing all duties associated with primary and secondary treatment under the supervision of
the chief operator, maintain rapid infiltration beds at both facilities, maintain grounds and
buildings both inside and out as well as assisting the Lead Operator with any functions needed at
Siasconset WWTF. Working Foremen report to the Chief Operator.
· Operators – Work with plant staff to ensure proper operation of both facilities. Responsibilities
include monitoring pump station operations, monitoring and performing all duties associated with
primary and secondary treatment under the supervision of the chief operator, maintain rapid
infiltration beds at both facilities, maintain grounds and buildings both inside and out as well as
assisting the Lead Operator with any functions needed at Siasconset WWTF.
· Collections Operators – Responsible for all preventative and corrective maintenance for all
sanitary sewer collections systems. These Operators are required to obtain a NEWEA Collections
Certification Grade III and Massachusetts Grade 4M or 6C wastewater license. The Collections
Operators report to the Chief Operator.
The NSD Organizational structure is depicted in Figure 2-1. Please note the following changes to the
organizational structure, which will be reflected in a new organizational chart at a later date:
· Chief Operator is now Kevin Manning, no longer Ardis Gary
· Engineer, Office Administrator, 2 operator positions were filled
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-3
Figure 2-1 Nantucket Sewer Department Organizational Chart
2.3 Training
The NSD provides various training programs to its staff including but not limited to:
· Electronic data collection and GIS updating
· Prioritizing collection system maintenance
· Pipeline and pump station preventative maintenance
· Work order processing and completion activities and applicable Asset Management criteria
· Management reporting
· Implementation of Emergency Overflow Response Plan
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-4
· FOG inspection protocol and follow-up
· Key components of the overall O&M Plan
· Work zone traffic safety
· Lockout/Tagout (LOTO) Procedures
· Confined Space Entry
· OSHA 10
· Confined Space Entry
· Lockout/Tagout Procedures
· PACP/MACP Training (via NASSCO)
· NEWEA Collection Class
· Operator Certification
· CDL
· Hoisting Licensure
· Oil Spill Prevention
· Lab Training
The Department Administrator is responsible for maintaining records of trainings completed by
employees and expirations of certifications. All trained staff are required to sign off to document
attendance and understanding of the training topics.
The NSD has collection system employees with the following NEWEA certifications:
· (6) Grade three
· (3) Grade two
The Town contracted with Tilson & Associates, LLC, of Torrington, CT. Tilson and Associates is a
consulting firm specializing in wastewater collection systems operation. In October 2017 Tilson and
Associates performed an assessment of NSD collection system maintenance focusing on pipe cleaning
and safety. In 2019, the NSD intends to contract with Tilson & Associates again provide additional
training to ensure more effective and efficient use of equipment and a more thorough understanding of
maintenance procedures for the staff.
In addition to documentation of training, several Standard Operating Procedures (SOPs) are already in
print and accessible to Department staff, with plans to create several more SOPs in the near future as a
result of Tilson and Associate’s assessment.
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-5
2.4 Internal Communications and Customer Service
Complaints and customer requests are received primarily by phone calls, emails, and occasionally in
person at the Sewer Department. The NSD Administrator receives all complaints and requests and directs
them to appropriate staff for required action via a routing/tracking system. Work Orders are generated to
prompt further investigation and include the following detailed information about the complaint/request:
· Receiver of complaint
· Time and date of complaint/request
· Complainant information (Name, address, call back phone number)
· Location of the problem
· Type of complaint (e.g. home back up, odor, manhole overflow, etc.)
· Description of Work
· Personnel assigned to complaint
· Findings type, including cause of problem
· Complaint closeout information
· Date complaint closed
Once a complaint is assigned and work order generated, NSD personnel perform an investigation. If the
problem cannot be immediately resolved, the responding staff will initiate steps to take appropriate action
for permanent correction of the problem. In the event that the Town of Nantucket is not responsible for
correcting the problem, a designated staff member will provide the complainant with guidance on a
recommended course of action. Once an investigation has been completed, the staff prepares closeout
information for filing. The Sewer Department’s administrator maintains records of all work orders and
complaints/inquiries. Examples of the tracking system for different sewer-related complaints are included
in Appendix A.
Additional customer services is accomplished through community outreach. The Town of Nantucket
Sewer Department delivers presentations in an effort to educate the community on what not to flush,
education on fats, oils and grease The Town delivers presentations to the local groups such as schools,
Town Officials, media, community groups such as the Nantucket Boys Club, and private citizens. The
NSD distributes brochures regarding FOG and is working towards developing a formal FOG plan in
2019.
2.5 Geographic Information Systems (GIS)
The Town of Nantucket has a centralized Geographic Information System (GIS) database utilizing
associated software from ESRI. The Town maintains their licenses and database through the Information
Technology and GIS Department. The Town uses the GIS as a resource for decision making for various
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-6
departments including the NSD. The Information Technology and GIS Department employs 6 people,
including 1 full time GIS coordinator.
The Town’s collection systems are mapped in the GIS database. The database includes gravity mains,
force mains, low-pressure sewer, and sewer manholes. The system can be updated to include new pipes
should the collection systems experience future expansion. Figure 2-2 illustrates the Town’s GIS system
and user interface through the web application. To preserve clarity, only a small portion of the Town area
is displayed in Figure 2-2 and feature labels have been turned off. There is also a desktop version of the
software and a mobile application, all with similar capabilities and access to the same, online database.
Figure 2-2 Nantucket GIS Screenshot
Nantucket Sewer Department has been using PeopleGIS on tablets in order to manage and view data in
the field. This software application allows the NSD staff to find and make changes to the data in the On-
line GIS. The Town approved $25,000 on February 22, 2017 for new software.
In 2017, the Town began using ArcGIS Online (AGO), which is an ESRI product. AGO is compatible
with a mobile app, Collector, which allows for field use on smartphones and tablets. The implementation
of AGO is allowing the Town to move away from the grid system, but the Town still maintains references
to the original grids, including fields in attribute tables that link each asset back to its original grid-based
ID.
The Town is continuing to make strides to update their protocols and system, with intentions to continue
this effort throughout the CMOM Program. New policies/protocols are currently being developed by the
Sewer Director and will be reported in CMOM Program Manual updates.
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-7
2.6 Management Information Systems
2.6.1 Work Orders
The NSD has a customized MIS system for work orders. The work order system has been developed
internally with electronic files for the following categories:
· Sewer System Issues
· Suspect Violations
· Manhole Repairs
The work order files are filed and organized by the NSD administrator as are the customer service orders
which are discussed further is Section 2.4 Internal Communications and Customer Service.
2.6.2 Collection System Data
NSD manages collection system data with the use of SCADA and RTU for pump stations, ETM and
alarms. All functions and operations are monitored with IFIX Proficy and Historian software. In 2016, a
new SCADA system and applicable computers were installed.
The NSD has received a proposal for the use of PeopleGIS for their SimpliCity Online Permitting
Services. This software will provide NSD with a web-based permit tracking system for new service
connections into their collection systems. This process will be discussed in further detail in Section 3.6
Engineering and Construction.
2.6.3 Asset Management
The Town currently uses GASB compliant software (Softright Software) for overall asset management.
During February 2019, the NSD began the process of selecting a new Computerized Maintenance
Management Software (CMMS) with the assistance of Hazen and Sawyer. This process is ongoing and
updates will be provided in subsequent CMOM submittals.
2.7 Management of Sanitary Sewer Overflows (SSOs)
The Town and Siasconset Sewer Systems are both separated systems and do not typically have issues
with sanitary sewer overflows. The collection systems have overflowed in the past due to root intrusion,
wipes/obstructions, and FOG (fats, oil and grease). The Town Sewer District has experienced less than
20 SSOs in the last three years with many of those occurring due to root intrusion, with approximately 1/3
of backups occurring in basements. The Siasconset Sewer District has had less than 6 SSOs over the last
three years resulting in 2 basement backups.
The NSD will be implementing a root control program as part of this CMOM program, via information
gathered during the CCTV inspections. During 2017, a SERECO 800 HPR jetting truck was added to the
NSD’s inventory. This truck has the ability to spray root inhibitors as well and will be integral in
implementing a root control program in the future.
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-8
All SSOs are documented using the Massachusetts State SSO Form and filed with the State within 24
hours, most within one hour via telephone, followed by electronic communication and fax (per MADEP
regulations). See Appendix B for the SSO Form.
NSD have developed the following measures to mitigate overflows:
· Daily checks of consistent problem areas.
· Weekly cleaning of problems found.
· Public outreach regarding FOG and non-flushables.
· Root control plan to eliminate blockages.
Long term, the NSD will identify potential problem areas via the CCTV Inspection Program. This
inspection program will inspect every pipe in the Town and Siasconset Sewer Districts over the next three
years. The CCTV inspection program will identify issues with blockages, roots, and structural and
operational pipe defects. Under CMOM, the CCTV inspection program combined with an I/I evaluation
and capacity analysis will provide the NSD with a proactive way of identifying issues that could cause
SSOs. The Town will budget for annual improvements to the collection systems based on these CMOM
programs.
2.8 Legal Authority
The Nantucket Board of Health (BOH) maintains sewer use regulations including FOG. The BOH and
NSD work closely and coordinate efforts related to legal authority. Furthermore, the Board of Selectmen
and the Sewer Commission work with the BOH and NSD to enforce the sewer use ordinances. Any
person or organization proposing an addition of a property that would require a sewer connection is
required to complete a check list with signature that requires evaluation and approval from the BOH,
Sewer Commissioners, Planning Office and Wannacomet Water. A rating system is used which
determines whether an applicant will be allowed to tie into the collection system. The rating system is
based on the following: failed septic system, land use, wellhead protection zone, other special
circumstances. In addition, the applicant needs final approval from the NSD. The NSD requires an
Application for Permit for Sewer System Extension, Connection, or Industrial Wastewater. The Checklist
for Proposed Expansion of the Sewer District is located in Appendix C. and the Application for Permit for
Sewer Extension is attached as Appendix D.
The sewer and storm water regulations are in the process of being updated as part of the on-going
Nantucket Harbor Shimmo and Plus Parcels Sewer Extension project and these will be included in
subsequent CMOM submittals. The updated sewer regulations and standard specifications were prepared
in 2018 and will be presented to the Board of Selectmen for review in April 2019.
2.9 Budgeting
The Town of Nantucket Sewer Department has an enterprise fund established for costs associated with
operating and maintaining the sewer collection system and wastewater treatment facilities. Currently,
sewer rates are calculated based on water usage and evaluated yearly. The Town is the process of
Nantucket, MA
CMOM Program Manual
| Collection System Management 2-9
completing a rate study analysis and is working to determine how revised sewer rates will be applied.
Updates will be included in subsequent CMOM submittals.
Budgeting for improvements are prioritized thorugh the Town’s Comprehensive Wastewater Management
Plan (CWMP) prepared in 2014. The Town is planning to develop a separate CWMP for the Siasconset
Sewer District. The Town and Siasconset Sewer District’s budgets are separate. Projected annual average
budget for both is $1,500,000.
Nantucket, MA
CMOM Program Manual
| Collection System Operation 3-1
3. Collection System Operation
3.1 Hydrogen Sulfide Monitoring and Control
There are no frequent odor complaints about the collection system. Hydrogen sulfide monitoring and
control is performed by NSD staff with biannual inspections of the force mains and quarterly exercise of
air relief valves.
3.2 Safety
The Nantucket Sewer Department maintains safety equipment for various situations that arise with
operating and maintaining collection systems. The following Table identifies current safety equipment
owned by the Town and the location the equipment is stored.
Nantucket, MA
CMOM Program Manual
| Collection System Operation 3-2
Table 3-1 Safety Equipment Inventory
Item Unit
Existing
Inventory
Suggested
Inventory Comments
PPE - Hard Hats EA 15 25
Available with Crews and in
Buildings 2 & 4
PPE - Safety Vests EA 36 36
Available with Crews and in
Buildings 2 & 4
PPE - Safety Glasses (tinted) EA 72 12 Available in Building 4
PPE - Latex Gloves CASE 2.5 4 Available in Building 4
PPE - Rubber Waders PR 0 1 N/A
PPE - Hearing Protection BOX 1/8 1
Available in Building 2, Safety
Equipment Cabinet
PPE - Tyvek Suits CASE 3 3
Available in Building 4 Control
Room
PPE - Personal PPE Kit Bag EA 0 15 Individual safety bags
First Aid Kits EA 4 4
Available in Buildings 4, 5, Lab,
and Admin
Life Rings EA 3 3
Primary & Advanced Treatment
Buildings
Fall Protection – Harness EA 3 3 Available in Building 2
Fall Protection - Tripod & Winch
System EA 1 2 Available in Building 2
MH Ventilation - Blower and Duct
Comb. EA 3 3 Available in Building 2
MH Ventilation - 4-Gas Meter EA 2 2 Available in Building 7 (Shop)
SDS Storage Box EA 5 5 Available at WWTP
Flammable Liquid Cabinet EA 5 5 Available throughout WWTP
Plastic Safety Chains LF 300 300 Available in Building 5
36-inch Black and Yellow Posts EA 9 9 Available in Building 5
Traffic Control - Large Traffic Cones EA 6 10 Available on Trucks
Traffic Control - Traffic Paddles EA 0 5 N/A
Traffic Control - Flash
Board/Message/Arrow EA 1 1 Available with Sewer Department
3.3 Mapping
3.3.1 GIS Mapping
The Town’s collection systems are mapped in a GIS database. The prior system utilized a tile-based
system where manhole IDs were numbered based on the sewer tile numbers and the number of sewer
manholes in that tile. Beginning in 2017, the NSD adopted the use of ArcGIS Online (AGO), produced
by ESRI. AGO is a web-based platform, storing GIS data securely on ESRI servers and allowing access
to this data via web applications, mobile applications, and traditional desktop software. This system has
allowed the NSD to abandon the tile numbering, although references are still maintained for manhole IDs.
Sewer pipes IDs are numbered sequentially. The sewer pipe layer includes more than 80 attribute fields,
which provide the ability to track pipe ID, diameter, length, material, condition (based on PACP coding),
Nantucket, MA
CMOM Program Manual
| Collection System Operation 3-3
rehabilitation recommendations, and many more items. The sewer manhole layer has similar fields,
allowing the NSD to record information such as manhole ID, depth, location, rim elevations, condition
(based on MACP coding), rehabilitation recommendations, and more. The attribute fields are fully
customizable and can be changed at any time by an authorized GIS user.
GIS maps have been updated with GIS work to date as well as CCTV data from the Town’s 2005
Infiltration and Inflow Reports. The Town undertook a GIS update in 2012. Additional updates began in
Fall 2017 as part of the CMOM Program. Beginning in the Fall of 2017, the NSD has started using AGO
as a means of tracking CCTV reviews and streamlining the GIS update process. The use of AGO is
discussed in Section 2.5.
CCTV work is being conducted by a combination of the Town’s sewer department staff and a hired
contractor. As part of this work, the CCTV crews have been given access to an AGO Web App, which
allows them to make maps for their use when performing CCTV inspections. The Web App also allows
the crew to make note of any discrepancies between the Town’s original GIS data and actual field
conditions. Those discrepancies are reviewed by the Town’s Consultant and the Sewer Director for
QA/QC and authorization to revise the GIS maps.
Nantucket Sewer Department was using PeopleGIS on tablets in order to manage and view data in the
field. The department is now making use of the ESRI Collector App on tablets and smartphones to access
their AGO maps in the field. This mobile software application allows the NSD staff to find and make
changes to the data in the online GIS database while they are in the field. In addition, edits to the GIS
maps are being made during field work performed as part of the CMOM Program. As the NSD continues
the CMOM program, field work will be conducted annually which will provide information necessary to
make changes to the collection system GIS maps. Both CCTV and flow monitoring will be conducted
regularly to identify changes in the GIS maps, which will be updated accordingly.
3.3.2 Record Plans
The Town collects and maintains sewer system Record Drawings on the Town’s computer network. All
drawings are stored electronically with minimal hard copies on site at the Surfside Wastewater Treatment
Facility. The Town has a new process for collecting Record Plans from developers and contractors
through the use of PeopleGIS software. This software will provide NSD with a web-based permit
tracking system for new service connections into their collection systems. This process will be discussed
in further detail in Section 3.4 Engineering and Construction.
3.4 Engineering and Construction
Any person or organization proposing to addition of a property that would require a sewer connection is
required to complete a check list with signature that requires evaluation and approval from the BOH,
Sewer Commissioners, Planning Office and Wannacomet Water. A rating system is used which
determines whether an applicant will be allowed to tie into the collection system. The rating system is
based on the following: failed septic system, land use, wellhead protection zone, other special
circumstances. In addition, the applicant needs final approval from the NSD. The NSD requires an
Application for Permit for Sewer System Extension, Connection, or Industrial Wastewater. The Checklist
Nantucket, MA
CMOM Program Manual
| Collection System Operation 3-4
for Proposed Expansion of the Sewer District is located in Appendix C. and the Application for Permit for
Sewer Extension is attached as Appendix D. The Town employs a flat fee for sewer hook-up of $2,000.
Once a new service or extension is approved the NSD plans to use PeopleGIS software to track
installation, approve installation and update the Town’s GIS. The Town also will use this software for
collecting Record Plans from developers and contractors. This software will provide NSD with a web-
based permit tracking system for new service connections into their collection systems. The proposed
process is in Figure 3-1.
Nantucket, MA
CMOM Program Manual
| Collection System Operation 3-5
Figure 3-1 Sewer Extension/Connection Permitting Process
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-1
4. Pump Stations
The Town of Nantucket owns and operates 15 wastewater pump stations listed in Table 4.1. The pump
stations are routinely checked by NSD staff and records kept on location.
Table 4-1 Pump Stations Maintained by NSD
Pump Station Location
Airport Pump Station 1 Millers Way
South Valley Pump Station 95 Goldfinch Drive
Monomoy South Pump Station1 19 Monomoy Road
Monomoy North Pump Station 61 Monomoy Road
Cato Lane Pump Station 21 Cato Lane
Aurora Way Pump Station 3 Aurora Way
Pine Valley Pump Station 27 Keel Lane
Surfside Rd Pump Station 95 Surfside Road
Sachems Path Pump Station Nanina Drive
Sherburne Commons Pump
Station
Sherburne Commons
Abrem Quarry Pump Station 5 Blueberry Lane
Sea Street Pump Station 1 Sea Street
115 Washington Street Pump
Station2
115 Washington Street
Backus Lane Pump Station3 Backus Lane
Wamasquid Pump Station
(New FY 2018)
Wamasquid Place
1. This pump station is being upgraded as part of the Shimmo
project
2. This pump station was removed from service in January 2018
3. This pump station has been adopted by the NSD
In most cases, manufacturer’s Operation and Maintenance (O&M) manuals for equipment readily
accessible to Sewer Department Staff. Each pump station also has an emergency operating procedure
developed for it. Several pump stations have Supervisory Control and Data Acquisition (SCADA)
systems installed and all pump stations have alarm systems. Tables 4-2 through 4-13 shows the
equipment housed at the pump stations currently and will be updated accordingly as upgrades are
completed. The accompanying figures show the pump stations from the ground and a simple map of their
location.
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-2
The Wamasquid Pump Station will come online in fiscal year 2018 as part of the Nantucket Harbor
Shimmo and Plus Parcels Sewer Extension Project. This pump station will operate 2, non0clog,
submersible pumps in a lead/lag configuration. The pump station has a design capacity of 130 gallons per
minute (gpm) and a total dynamic head (TDH) of 84 feet. The motors shall be 460 volt, 3 phase, with a
maximum horsepower of 15, and a maximum RPM of 1,750. The pump station will service the Meadows
View Drive neighborhood, which is located off of Vesper Lane.
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-3
4.1 Pump Station Locations and Equipment
Figure 4-1 Airport Road Pump Station Site Location
Table 4-2 Airport Rd Pump Station Equipment
Equipment Number Notes
Pumps 2 270 gpm pumps
Motors 2 1775 rpm, 15 HP, 480 V, 3 Ph, 60 Hz
Control Panel 1 Combination Control & Power Panel
Float Switches 5
Alternate Power Sources 0 NSD brings generators to site as
needed
Figure 4-2 South Valley Pump Station Site Location
Table 4-3 South Valley Pump Station
Equipment Number Notes
Pumps 3 Gorman-Rupp T-series, T6A3-B
1,000 GPM, TDH 38.5 ft
Motors 3
Control Panel 1 Allen-Bradley, RTU
Float Switches 5
Meters 1 Flow Meter
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-4
Figure 4-3 Monomoy South Pump Station Site Location
Table 4-4 Monomoy South Pump Station (Upgraded 2018)
Equipment Number Notes
Pumps 2 Flygt Pumps, 275-700 gpm (new 2018)
Motors 2 1,750 rpm (max, VFDs), 30 HP, 460 V, 3
Ph
Control Panel 1 Combination Control & Power Panel
Float Switches 1 1 backup high level float, pressure
transducer for regular operation
Alternate Power Sources 1 Emergency Propane Generator on site
Figure 4-4 Monomoy North Pump Station Location
Table 4-5 Monomoy North Pump Station
Equipment Number Notes
Pumps 2 Flygt Pumps, 140 gpm
Motors 2 VFDs
Control Panel 1 Combination Control & Power Panel
Float Switches 5
Alternate Power Sources 0 NSD brings generators to site as
needed
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-5
Figure 4-5 Cato Lane Pump Station Site Location
Table 4-6 Cato Lane Pump Station
Equipment Number Notes
Pumps 2 Flygt Pumps, 140 gpm
Motors 2 VFDs
Control Panel 1 Combination Control & Power Panel
Float Switches 5
Alternate Power Sources 0 NSD brings generators to site as
needed
Figure 4-6 Aurora Way Pump Station Site Location
Table 4-7 Aurora Way Pump Station
Equipment Number Notes
Pumps 2 24 gpm
Motors 2
Control Panel 1 Combination Control & Power Panel
Mission Control Monitoring System
Float Switches 5
Alternate Power Sources 1 NSD brings generators to site as
needed
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-6
Figure 4-7 Pine Valley Pump Station Site Location
Table 4-8 Pine Valley Pump Station
Equipment Number Notes
Pumps 2 24 gpm
Motors 2
Control Panel 1 Combination Control & Power Panel
Mission Control Monitoring System
Float Switches 5
Alternate Power Sources 1 NSD brings generators to site as
needed
Figure 4-8 Surfside Road Pump Station Site Location
Table 4-9 Surfside Road Pump Station
Equipment Number Notes
Pumps 2 Gorman-Rupp, 900 gpm
Motors 2
Control Panel 1 Allen-Bradley, 460 Volts RTU
Float Switches 5
Meters 1 Flow meter
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-7
Figure 4-9 Sachems Path Pump Station Site Location
Table 4-10 Sachems Path Pump Station
Equipment Number Notes
Pumps 2 100 gpm
Motors 2
Control Panel 1
Float Switches 5
Odor Control 1 Chemical Dosing and Carbon Filter
Figure 4-10 Sherburne Commons Pump Station Site Location
Table 4-11 Sherburne Commons Pump Station
Equipment Number Notes
Pumps 2 Myers Pumps, 313 gpm
Control Panel 1 Myers Control Panel
Float Switches 5
Odor Control 1 Carbon Filter
Alternate Power Sources 0 NSD brings generators to site as
needed
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-8
Figure 4-11 Abrem Quarry Pump Station Site Location
Table 4-12 Abrem Quarry Pump Station
Equipment Number Notes
Pumps 2 Myers Pumps, 140 gpm
Motors 2 5 HP
Control Panel 1 Allen-Bradley MicroLogix 1500
Float Switches 5
Alternate Power Sources 0 NSD brings generators to site as
needed
Figure 4-12 Sea Street Pump Station Site Location
Table 4-13 Sea Street Pump Station
Equipment* Number Notes
Pumps 3 1,500 gpm
Motors 3 85 HP, 460 V, 3 Phase, 60 Hz, 1800
RPM
Control Panel 1 SCADA Integration
Float Switches 5
Alternate Power Sources 1 300 KW, 480 V, Diesel Generator
* This pump station is currently being upgraded to the specifications listed
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-9
4.2 Pump Station Alarms
The Town’s pump station alarms vary depending on the size and criticality of the pump station. The
following is a list of typical alarms at pump stations throughout the Town:
· High Level Wet Well
· Low Level Wet Well
· Power Failure
· Overflow
· Pump Failure
Having the ability to monitor the pump station operation remotely and receive alarms which identify
specific issues allows Sewer Department staff to better address maintenance issues and alarms as they
arise.
4.3 Pump Station Inspections
The Nantucket pump stations are, on average, inspected daily by Sewer Department Staff. During these
inspections, Town staff reviews and records pertinent information that may include pump run hours,
totalized flow, wet well levels and alarms, depending on the station and its equipment. Back-up
generators are inspected monthly by Sewer Department staff, and exercised with load every other month
by Sewer Department Staff.
Inspection, maintenance and repairs are recorded and kept accessible to the Sewer Department at the
Administration building at the Surfside WWTF. If a problem or maintenance issue is encountered,
personnel must also report it immediately to the appropriate supervisor for resolution. The supervisor will
initiate the generation of applicable work orders for repairs and routine maintenance. Repairs are a higher
priority than routine maintenance.
The Town had one pump station with piping and valve issues with a wet well failure in 2015. This station
was fully repaired in 2015. Sea Street Pump Station is undergoing a complete renovation with upgrades
to the pumps, piping, electrical, SCADA and a new emergency generator and flood protection. This
upgrade will be completed in 2018.
One forcemain failure occurred in January 2018, which required extensive cleanup and repair efforts.
This failure occurred on one of the forcemains leaving the Sea Street Pump Station, in the vicinity of 7
South Beach Street and was addressed by the NSD in accordance with all state and federal regulations.
During the time that the forcemain was offline, the NSD inspected the remainder of the failed forcemain.
The forcemain was repaired and became operational again during early 2018. Planning for the
construction of a new forcemain is underway at this time.
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-10
4.4 Mechanical and Electrical Maintenance
The size of the pump station and its related equipment determine its specific mechanical and electrical
maintenance needs. The Collections System Operators are responsible for incorporating the routine
preventative maintenance of each pump station into the current filing system. The Collections System
Operators use manufacturers’ Operation and Maintenance manuals to establish action items for pump
station equipment. The CMOM Program will develop a system for prioritization of equipment
maintenance needs. Currently, work orders are back logged and the Sewer Department Staff is working
through them as quickly as possible. Preventative maintenance is currently carried out on a bi-annual
basis. The current 6-month preventative maintenance regime includes:
· Change oil and grease bearings on pumps and generators
· Adjust pumps
· Rotate Pumps (lead, lag, backup)
· Maintain intake air filters (where applicable)
· Wet-well cleaning (as necessary)
Generally, mechanical and HVAC repairs for the pump stations are performed by Sewer Department
staff. The Town does not keep a large inventory of spare parts for their pump stations, but has identified
suppliers so that parts are readily obtained from local vendors or the manufacturer’s service center. The
stations’ electrical maintenance needs are contracted out on an as needed basis.
Whether repairs are made by contractors or by Sewer Department employees, all mechanical and
electrical maintenance activities are recorded on log sheets. As the Town works to select and implement a
Computerized Maintenance Management System (CMMS), these records will be uploaded to that
database. The Sewer Department’s administrator generates work orders for preventive maintenance
actions. Any problems or maintenance issues noted by crews are reported to the administrator to begin the
work order process, which will lead to a timely resolution to the problem.
4.5 Forcemain Maintenance
Nantucket currently operates a total of 12.7 miles of forcemain in the collection system. The system
contains several air relief valves at the high points. Nantucket Sewer Department staff performs routine
maintenance and inspection on these valves quarterly. Air relief valves and valve vaults are inspected for
signs of corrosion, connection point leakage, or improper operating characteristics. The Town will
develop a forcemain cleaning protocol as part of the CMOM Program. There has been one forcemain
failure, which was addressed in Section 4.3.
An additional 5,000 LF of forcemain is expected to come online during 2019 as the Nantucket Harbor
Shimmo and Plus Parcels Sewer Extension Project is completed and brought online. This new forcemain
will be maintained in accordance with existing practices at the NSD.
Nantucket, MA
CMOM Program Manual
| Pump Stations 4-11
4.6 Corrosion Control
The dissolved oxygen (DO) content of the wastewater is often depleted in the wet well of pumping
stations. This can lead to generation of hydrogen sulfide gas (H2S) and subsequent corrosion and odor
issues in the station. Wet well cleaning is one measure that can mitigate these issues and a cleaning
program will be considered as part of the CMOM Program. Hydrogen sulfide corrosion is not a
widespread issue in the Nantucket sewer system and, as a result, the Town does not have a written plan
for corrosion control. The Sewer Department will be creating a plan for reviewing and replacing severely
corroded components of the system as part of the CMOM Program.
The Town does take H2S corrosion into consideration during design of new or replacement sewers and
makes an effort to control H2S levels in the system via chemical dosing. Chemical dosing is applied in the
form of chlorine and sodium hydroxide. All doses are logged and records are kept at the Sewer
Department.
4.7 Non-Sewer Department Owned Pump Stations
Although the NSD owns and operates nearly all the pump stations on the island, there is one private
sewage pump station in the Siasconset Sewer District on Towady Road. It receives very little flow and is
maintained privately, though it pumps its flow into the Siasconset Sewer system.
There is also one storm water pumping station, which is owned by the Town of Nantucket and is operated
with help from the NSD by the Department of Public Works (DPW).
There are several private pumping stations across the Island, which are not currently operated or
maintained by the Town’s Sewer Department.
A new pump station was constructed as part of the Nantucket Harbor Shimmo and Plus Parcels Sewer
Extension project on Wamasquid Lane in the Hussey Farm Neighborhood. It is owned and operated by
the NSD.
The Town is not responsible for any on-lot grinder pumps that are very common across the island on
private property.
Nantucket, MA
CMOM Program Manual
| Collection System Maintenance 5-1
5. Collection System Maintenance
5.1 Right-of-Ways and Easements
There is currently no scheduled maintenance in right-of-way and easements. There are no known
manholes or sewer lines on private property, but this will be well documented during the CCTV
Inspection program and CMOM program. The NSD will identify all manholes and sewer lines located in
cross country easements as part of the CCTV Manhole Inspections. GIS maps and legal descriptions will
be updated as the program progresses.
5.2 Root Control
Currently the NSD has no formal root control program. Roots are removed or treated as part of the
CCTV Inspection project and will be removed to allow for access to CCTV. In addition, roots (heavy,
medium, fine) are being noted in the CCTV reports and the Town’s consultant will provide
recommendations for root control. The NSD will take up a formal root control program as part of this
CMOM program and as informed by the CCTV program. In 2017, the NSD acquired a new jet truck that
has the capability to spray root inhibitors. This truck is already in use by the department and the root
inhibitor chemicals will be integral in the root control program. The NSD will be working to develop and
implement a formal root control program during 2019.
5.3 Sewer Cleaning
The Town’s preventative sewer maintenance activity is essentially sewer line cleaning. Sewer line
cleaning has been initially prioritized based on institutional knowledge of the collection system and
overlap with other utility projects. Currently, there is a standard operating procedure (SOP) in place for
cleaning of sewer lines. The Town owns a mechanical rodder truck and two jet trucks for cleaning. In
addition, the NSD may use chemicals to assist in cleaning lines. Sewer line cleaning is also performed
prior to CCTV inspection of pipes. The Town’s CMOM Program created and implemented such a
program with the assistance of Steve Tilson Associates (as noted in Section 2.3 Training). The Town
signed a contract with Tilson & Associates, LLC, of Torrington, CT. Tilson and Associates is a
consulting firm specializing in wastewater collection systems operation. In October 2017 Tilson and
Associates performed an assessment of NSD collection system maintenance focusing on pipe cleaning
and safety and subsequently provide training to ensure more effective and efficient use of equipment and
a more thorough understanding of maintenance procedures for the staff. A report created from the
assessment was delivered to the NSD in November 2017 and highlighted areas and practices that could
benefit from improvements. Tilson & Associates, LLC will be performing training for NSD personnel in
2019, which will help standardize O&M practices.
As cleaning is performed, all records will be kept in a customized database, which will allow for tracking
the following:
· Date, time and location of cleaning activity
Nantucket, MA
CMOM Program Manual
| Collection System Maintenance 5-2
· Specific lines cleaned
· Equipment used
· Identity of cleaning crew
· Presence of roots, grease, or debris
· Volume of debris removed (where applicable)
· Problems identified or other follow up actions necessary
Each line segment cleaned is identified by an asset ID number and can also be identified by the asset IDs
of the upstream and downstream manholes.
Currently this program is performed by a Contractor and the required procedures for cleaning prior to
inspection or provided in Section 6.1 CCTV Inspections. During 2018, the NSD acquired a CCTV Van
and performs some inspections independently of the contractor as well.
5.4 Parts and Equipment Inventory
The NSD equipment inventory is maintained by the Administrator and Chief Mechanic. The following
table itemizes existing equipment and inventory.
Table 5-1 Equipment Inventory
Item Unit
Existing
Inventory
Suggested
Inventory Comments
Inflatable Sewer Plug – 6” EA 1 1 Available with Sewer Department
Inflatable Sewer Plug – 8” EA 1 1 Available with Sewer Department
Inflatable Sewer Plug – 10” Flow
Thru EA 1 1 Available with Sewer Department
Inflatable Sewer Plug – 24” Flow
Thru EA 0 1
N/A
Crank Style Sewer Plug – 4” EA 2 2 Available with Sewer Department
Crank Style Sewer Plug – 8” EA 1 2 Available with Sewer Department
Crank Style Sewer Plug – 10” EA 0 2 N/A
Crank Style Sewer Plug – 12” EA 0 2 N/A
2" Sump Pump EA 4 4 Available with Sewer Department
2" Mud-Sucker Pump EA 1 1 Available in Building 6
Chainsaw - 16" EA 1 1 Available in Building 3, Garage
Leaf Blower EA 1 1 Available in Building 3, Garage
Commercial Weed Whacker EA 1 1 Available in Building 3, Garage
Hedge Trimmer EA 1 1 Available in Building 3, Garage
15 HP Snowblower EA 1 1 Old Shop Building 2
6 HP Shop Vac EA 1 1 Old Shop Building 2
Manhole Lifting Devices EA 2 2 Available on Trucks
Nantucket, MA
CMOM Program Manual
| Collection System Maintenance 5-3
Item Unit
Existing
Inventory
Suggested
Inventory Comments
Vactor Accessories - Grease Nozzle EA 0 1 N/A
Vactor Accessories - Root Cutter EA 0 1 N/A
Vactor Accessories - Large
Diameter Nozzle EA 1 1 Available with Sewer Department
Vactor Accessories – Warthog EA 0 1 N/A
28 Foot Fiberglass Extension
Ladder EA 3 3 Available in Building 5
2 Ton Gantry Crane EA 1 1 Available in Building 5
2 Ton Foldable Engine Crane EA 1 1 Available in Building 5
1 Ton Dump Truck EA 1 1 Available with Sewer Department
Vac Con Jet Truck EA 1 2 Available with Sewer Department
SERECO 800HPR Jet Truck
(Acquired 2017) EA 1 1 Available with Sewer Department
Dodge ProMaster 3500 Aries CCTV
Van EA 1 1 Available with Sewer Department
Pickup Truck EA 2 2 Available with Sewer Department
Crew Cab Truck EA 2 2 Available with Sewer Department
LEICA Global Positioning System EA 1 1 Available with Sewer Department
Portable Trash Pump - 4" EA 1 1 Available with Sewer Department
Portable Trash Pump - 6" EA 1 1 Available with Sewer Department
Portable Trash Pump - 8" EA 0 1 N/A
20' Trash Pump Suction Hose - 4" X
10' LF 250 250 Available with Sewer Department
20' Trash Pump Suction Hose - 6" X
10' LF 0 250 N/A
30' Trash Pump Suction Hose - 8" X
10' LF 0 150 N/A
Trash Pump Discharge Pipe - 4" X
20' SEC 0 50 N/A
Trash Pump Discharge Pipe - 6" X
20' SEC 0 50 N/A
Trash Pump Discharge Pipe - 8" X
20' SEC 0 25 N/A
4" Fitting SET 0 1 N/A
6"Fittings SET 0 1 N/A
8"Fittings SET 0 1 N/A
Air Compressor EA 0 1 N/A
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-1
6. Collection System Testing and Inspection
The NSD has embarked on a new system for testing and inspection all sewer lines. The goal of this
program is to complete the entire system assessment in three years; with developing a schedule for
ongoing assessment annually thereafter. The Town has set a goal of inspecting 100,000 linear feet of
sewer pipe annually for the three-year period, of which one year is complete, and the second year is
approximately 90% complete.
The Town of Nantucket began a cleaning, inspection and assessment program in the Fall of 2017, having
approved a Contract with National Water Main Cleaning Services to perform closed circuit television
video (CCTV) and manhole inspections at the October 11, 2017 Board of Selectmen Meeting. Presently,
the Town owns and operates one Vac-Con truck, one SERECO 800 HPR jet truck, one mechanical
rodder, and one Dodge ProMaster 3500 Van with Aries CCTV equipment. This will allow the Sewer
Department to perform cleaning and inspection activities in-house. A methodology for inspection priority
has been developed by focusing on the known problem areas, critical infrastructure components and
select areas based on ongoing related projects. The results from the CCTV program will be used to
establish cleaning frequency and prioritize the repair or replacement needs for each component.
Institutional knowledge of the condition of the collection system is also being used to establish a more
frequent cleaning schedule for identified problem areas.
In December of 2018, the Town entered the Year 2 contract with Ted Berry Company, Inc. of Livermore,
Maine. This contract mirrors Year 1, but also includes provisions to gather global positioning system
(GPS) coordinates for all manhole structures inspected during Years 1 and 2. Work on this contract
began on January 7, 2019.
The cleaning, inspection and assessment efforts will be performed by designated Town of Nantucket staff
from the Sewer Department and supported by the selected consultant team and selected contractors. All
data will be electronically entered into AGO database discussed in previous sections of this manual.
The CCTV programs include: sewer cleaning, CCTV inspection and National Association of Sewer
Service Companies (NASSCO) Pipe Inspection and Certification Program (PACP) Version 7.0 condition
assessment of piping, Level 1 inspection and Manhole Inspection and Certification Program (MACP)
Version 7.0 classification of the manhole structures and their flow channels. Results from these programs
will be used to identify, categorize and prioritize cleaning and inspection frequencies for the designated
areas of the Town’s collection system.
The cleaning and CCTV schedules are closely coordinated. The Sewer Department is making cleaning a
priority and aim to proactively clean sewers. The Town also intends to continue to inspect a portion of the
manholes annually in conjunction with the sewer pipe inspections. The Town is inspecting drain lines as
well, looking for illicit connections or any possible combined sewer systems currently unreported.
Information from cleaning and inspections is entered into a customized database to allow for easier use
and tracking by Sewer Department Staff. This database is accessible via traditional desktop GIS
software, web-based applications, and through the use of software applications on smartphones and
tablets.
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-2
For more details related to cleaning sewer lines refer to Section 5.3 Sewer Cleaning.
6.1 CCTV Inspections
The CCTV Inspection work is currently being performed by a Contractor. The Contractor’s
responsibilities include:
· Cleaning Prior to Inspection
· CCTV Inspection of pipelines and manholes
· Provide the following deliverables: viewing of video, pictures, and .pdf reports, PACP database
containing all asset and inspection data, all video (.WMV or .mp4) and pictures (.JPG) associated
with CCTV inspections, all .pdf line reports for inspected pipelines to include: Project Summary,
Plot Listing Image (4/page), PACP Condition Grading Report
Cleaning in preparation for a CCTV inspection must be performed more thoroughly than for routine
maintenance. Pipe walls must be clean enough for the camera to discern structural defects, misalignment,
and points of infiltration. Small amounts of debris left in the sewer invert, such as sand, stone or sewage
solids, may not interfere with effective inspection. At a minimum, cleaning shall achieve a 95% open
area. Some pipes may need to be cleaned during the night time hours, as determined by the town.
Types of cleaning include:
· Light Cleaning- Light cleaning shall be defined as up to three (3) passes of high pressure
water jetting to achieve a minimum 95% open area
· Heavy Cleaning – Heavy cleaning shall be defined as cleaning requiring more than three (3)
passes of high water jetting to achieve a minimum 95% open area. Situations requiring the
use of heavy cleaning may include, but are not limited to, large amounts of debris or heavy
root growth within the existing sewer line. Heavy cleaning shall not be conducted without
prior approval of the Town.
Sewers are generally cleaned upstream starting at the downstream manhole of the area to be worked in.
Equipment used should be capable of removing dirt, grease, rocks, sand, light roots, and other materials
and obstructions found in sewer lines. If an entire section cannot be cleaned from one manhole it may be
assumed that there is a major obstruction and the flushing should be terminated. A CCTV inspection
should follow. A note should be made whether the obstruction will pose an immediate problem such as
backup or overflow and that information should be given to the Town immediately.
The contractor should be aware of several precautions to be taken during cleaning operations. Eroded,
corroded, or otherwise deteriorated pipe may collapse during cleaning operations. Visible inspection must
be used to ascertain the advisability of cleaning. Sometimes a CCTV inspection must be made prior to
cleaning. Clean soil and pieces of broken pipe or tile observed in a manhole are strong indications of
broken, crushed, or collapsed pipe in the upstream section; caution in the continuation of work should be
used. Pipe damage is possible any time powerful cleaning equipment is used. Cleaning equipment and
tools should be matched to both the pipe conditions and the job to avoid pipe damage.
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-3
All solids or semi-solid materials shall be removed at the downstream manhole via vacuum tubes. If large
material is found that needs to be removed by hand, confined space entry procedures will be followed. If a
confined space entry is required, the Contractor shall provide space entry requirements as defined by
OSHA regulations.
During flushing operations that involve vacuuming, the need to decant water will become necessary. This
will be performed into a downstream manhole capable of handling extra flow with a 4” drain hose. A
drain port on the vacuum tank will be located so as not to allow solid materials to be drained into the
sewer system. A hydraulic pump-out option may be used when conditions allow.
All materials removed by vacuum from the sanitary sewer system shall be disposed of in accordance with
local, state, and federal disposal regulations at an area determined by the Town.
It is standard procedure to perform a sanitary sewer CCTV inspection from one manhole up or
downstream to another manhole. This will typically be accomplished by inserting a transporter with
camera head into a manhole. The transporter will be controlled by the operator, and it will travel the
length of pipe to be inspected following NASSCO PACP standards and any Town-supplied
specifications. During the inspection, the camera operator will be responsible for noting any faults or
connections into a log-style database for future reference. All mainline inspections will require the use of
different transporters and will be determined on site by the operator. The operator will have the
knowledge required to choose the best transporter for the specific line segment.
The contractor should recognize that there are some conditions, such as broken pipe and major blockages,
which prevent a complete inspection from being accomplished or where pipe or equipment damage would
result if inspection were attempted. Should such conditions be encountered, the Contractor should not be
responsible to inspect those specific pipe sections. The camera operator should be knowledgeable of and
alert for any conditions which warrant termination of inspection activities.
Precautions should be taken in areas where pipe/joint deflections may cause transporter or cameras to
become lodged in the sewer line. The operator will have the knowledge to recognize and evaluate these
situations on an individual basis. Segments of line that have not been properly cleaned may also cause a
risk which will be made known to the Town prior to inspection. Segments of line that have major root
growth may also impede the inspection process.
The Cleaning, Inspection and Assessment programs goal is to inspect the entire collection system as
expeditiously as possible starting with the areas of greatest importance. Nantucket’s CCTV contractor
will be able to document:
· The structural condition of the pipe
· The operational condition of the pipe
· Root intrusion
· Blockages
· Grease and sediment buildup
· Protruding connections
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-4
· Evidence of inflow and infiltration (I/I) or surcharging
· Manhole pave-over’s
· Other deficiencies that factor into condition assessment
Video inspections are generally scheduled to follow planned cleaning. In the event of an abandoned
CCTV Inspection, the contractor or Town staff may need to perform a reversal on the pipe or utilize
additional technology, such as a handheld pole camera. Should the survey find a blockage, the blockage
would be removed and the CCTV inspection completed as planned.
All newly constructed sewer lines are required to be CCTV inspected by the contractor or developer to
verify as-built drawings and ensure the line has no construction defects. Additionally, all new pipes are
required to be pressure tested to ensure tightness and prevent release of sewer odors and future
infiltration. Pipe pressure testing and deflection testing are required by the contractor once the designated
street or pipeline has been completed to ensure proper installation and future performance. Manhole
testing requirements have not yet been established, but are being evaluated by the Town at this time. As
part of the CMOM Program, all new infrastructures will be updated within the GIS.
6.1.1 Manhole Inspections
Manhole inspections help keep the asset inventory up-to-date and are used to update collection system
maps, determine structural and hydraulic conditions and prioritize/schedule maintenance activities.
During manhole inspections, field crews take a complete inventory of each manhole including
construction materials, ring size, depth to invert, flow conditions and document evidence of problems.
Manhole inspections are to be performed as Level 1 inspections, following NASSCO MACP V7.0
criteria. Results will be reviewed by the consulting team retained by the Town. The manhole inspection
program began in the Spring of 2018 and will be continuing every year thereafter. For manholes, a
minimum of three photos linked to the inspection record and shall be taken as follows:
· General site photo
· Inside photo showing flow channel and manhole barrel
· Inside photo showing chimney and casting conditions
The CMOM Program implemented a rating system to prioritize which manholes will be rehabilitated or
replaced first. Manhole inspection information will be electronically stored in the database. Based on the
inspection data and priority assigned to manhole repairs, Town Staff or contractors will be able to
perform the repairs.
As part of the Year 2 contract, GPS coordinates will also be collected for each manhole. This information
will be stored in the database and will create a spatially accurate depiction of the collection system, as
well as allow operators to quickly and accurately locate manholes in the field.
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-5
6.1.2 Sewer Pipe Inspections
While routine cleaning and visual inspection are used to assess the condition of manholes and surface
facilities, CCTV video inspections are the primary method used to assess the condition of the sewer pipes.
The CMOM Program for the Town of Nantucket will develop a procedure to determine where and when
CCTV inspections should be carried out. While a prioritization system is implemented, the Town has
identified several key areas where overlap with other utility projects necessitates immediate CCTV
inspections. Five NSD employees received NASSCO PACP/MACP certification in March 2018 and are
able to assist the contractor, perform their own inspections, and participate in determining areas of
priority for CCTV inspections.
Information gathered from the CCTV inspections will be reviewed by the Town’s consultant and updates
to the GIS database will be made. The findings will help determine short and long-term maintenance
strategies including increased cleaning, root treatment, sewer line repair, or replacement. The condition
assessment will help establish the cleaning frequency and support Nantucket’s capital planning. Sewer
line repair or replacement projects are also coordinated with other work taking place in the Town in an
effort to minimize disruption to daily activities. Condition assessments document the following details
and deficiencies:
· Characteristics including pipe diameter, and age and type of material
· Dips in line
· Grease build-up
· Root intrusion
· Sediment accumulation and encrustation
· Structural condition, including cracks, corrosion and erosion
· Joint alignment and movement
· Obstructions
· Deformations
6.2 Infiltration and Inflow
CCTV inspections identify locations of suspect infiltration and inflow (I/I) sources, however a much-
detailed investigation should be conducted to evaluate and quantify these sources of I/I in the collection
system. The Town of Nantucket conducted an I/I Study in 2005. As a result of the previous study, many
improvements have been made to the Town Sewer Area. The NSD conducted an I/I study during 2018.
The following scope of work is included in this recent I/I program:
· Develop Sewershed Areas
· Collect Flow/Rainfall Monitoring Data
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-6
· Perform I/I analysis
· Compile a list of I/I removal projects and next steps to mitigate I/I.
The NSD has hired a Consultant to assist with this program. The consultant conducted a temporary flow
and rainfall monitoring program to establish a recent, continuous and simultaneous data set of velocities,
depths and flows in the sewer system. This monitoring program utilized area-velocity metering equipment
that allows measurement of flows and levels both below and above the pipe crown, to capture the range of
potential sewer system responses to rainfall, including surcharged conditions. Data was reported in five-
minute intervals. The data collected will inform the evaluation of infiltration and inflow, as well as be
used in the calibration/validation of the hydrologic/hydraulic model (refer to Section 7 – Collection
System Capacity Analysis). Flow meters installation was completed on March 23, 2018.
The flow and rainfall monitoring program was conducted from March 23, 2018 through July 18, 2018.
This monitoring period allowed for the analysis to reflect a range of seasonal fluctuations in flows. A total
of ten (10) temporary flow meters and two (2) rain gauges are included in this task. The consultant
selected the monitoring locations, administered the sub-contract to the flow monitoring sub-consultant,
and conducted QA/QC for the data collected.
The consultant evaluated inflow and infiltration into the sewer system, based on the flow and rainfall data
collected during the monitoring period. Any rainfall data collected concurrently by the Town at other
locations was obtained to supplement the temporary rain gauge data collected. All data collected was
screened and QA/QC’d, using visual hydrograph analysis, flow balancing, and scattergraph analysis.
For each monitored sub-area, measured wastewater flows were separated into groundwater infiltration,
sanitary flow, and rainfall dependent infiltration and inflow (RDI/I) resulting from the measured rain
events. Dry weather groundwater infiltration rates were calculated and monitored sub-areas were ranked
by magnitude. RDI/I rates were calculated and ranked separately. GWI rates were established in units of
gallons per day per inch diameter mile of pipe to reflect the impact of GWI in each sub-area.
Inflow volumes and peak rates were quantified and analyzed to determine the impact of each rainfall
event observed and to assist in predicting the impact for design storms (e.g., 1-year 6-hour). R-values
were developed as a tool for ranking sub-areas with high RDI/I.
The normalized I/I quantities were evaluated and a priority list developed by ranking GWI and RDI/I via
MADEP guidance (2017) thresholds.
The data collected from the monitoring period will be used to update the model calibration and was
reported on in the Year 1 CMOM Program Summary Report, dated December 2018.
Based on the abovementioned analyses and evaluations the Consultant prepared and submitted a Draft I/I
Report. The Draft Report was submitted to the Town for review and comment and included the
recommendations for I/I removal projects and additional steps to be taken to remove/reduce I/I in both the
Siasconset and Town Collection Systems.
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-7
Figure 6-1 Town Area Sewershed
Nantucket, MA
CMOM Program Manual
| Collection System Testing and Inspection 6-8
Figure 6-2 Siasconset Area Sewershed
Nantucket, MA
CMOM Program Manual
| Collection System Capacity Analysis 7-1
7. Collection System Capacity Analysis
The Town’s state approved CWMP Update in 2014 evaluated the current and future capacity needs for
the Surfside WWTF. Some of the collection system capacity was completed under the Shimmo and Plus
Parcels Project. As part of this CMOM Program, the NSD completed the remaining capacity analysis and
updated the 2014 analysis.
A complete and updated capacity analysis was performed for both Town and Siasconset sewer areas to
identify bottlenecks in the collection systems under various storm events and dry weather. This capacity
analysis will be used as a tool by NSD for identification of improvements to the systems and long-term
planning. The model created in this program will assist the Town in making decisions for future request
for service connection tie-ins to the collection systems.
7.1 Sewer System Model
The NSD worked with a Hazen and Sawyer to create models of the Town and Siasconset sewer districts.
The model includes information obtained by:
· Record drawings and sewer mapping
· Geographic Information Systems (GIS) data
· Closed-Circuit Television (CCTV) data
· Records from staff regarding field observations (e.g., SSO history, etc.)
· Pump station flow and operational data
· Shimmo and Plus Parcels Sewer Extension Downstream Capacity Analysis (2017)
The model created is a dynamic hydraulic model including gravity lines, major pump stations and the
WWTPs. Pump stations will be explicitly modeled on a case-by-case basis depending on criticality to the
overall analysis. At a minimum, the Sea Street Pump Station, Surfside Pump Station, and Surfside and
Siasconset WWTPs Headworks (at both WWTPs) will be included.
The constructed model networks will be performed by importing Town-provided GIS data for modeled
sewer pipes and manholes into the model software program, and performing a QA/QC analysis on
pipe/manhole connectivity and alignment. Data gaps were populated using a combination of record
drawings, field inspection data, and other data provided by the Town. Interpolation and extrapolation of
inverts and/or rim elevations was performed when no other reliable data sources existed. Sewer sub-areas
established in the I/I analysis were used as a starting point for delineation of flow inputs in the model
network. The larger sub catchments were subdivided as required to achieve appropriate modeling
resolution. Pump station operational information was defined in the model for explicitly-modeled pumps,
and WWTP headworks were also defined. When electronic GIS data was not available, record drawings
or field inspections were utilized to populate the required model data.
Nantucket, MA
CMOM Program Manual
| Collection System Capacity Analysis 7-2
The NSD has a partial model established for part of the Island. This model was completed in order to
allow the extension of sewers in the area of Shimmo. The model was developed using PC-SWMM
(Stormwater Management Model) version XPSWMM 2016, by XP Solutions. Figure 7-1 illustrates the
capacity analysis performed for the extension of Shimmo and additional parcels in the area.
The model was configured to represent both dry weather flow conditions as well as wet weather
performance of the collection system. Dry weather flows were developed based on a combination of flow
metering data, water consumption data, and/or population data as appropriate. Wet weather flows were
developed using standard hydrologic parameters that represent the rainfall-dependent infiltration and
inflow response of sewer systems. Flow and rainfall monitoring data collected were used to perform dry
and wet weather calibration and verification of the hydraulic model. Representative storm events of
varying intensities and depths were selected from the rainfall data set and used for calibration and
verification. A minimum of three (3) storms were used for calibration and one (1) for verification of the
model.
The model was calibrated by adjusting hydrologic and hydraulic parameters until reasonable agreement is
reached between observed and predicted flows, volumes and depths. Model calibration accuracy and
quality will be judged by industry-standard guidelines, such as delineated in the Wastewater Planning
User’s Group Code of Practice for the Hydraulic Modelling of Sewer Systems (Nov. 2002). The
guidelines establish general acceptable ranges for model accuracy, as follows:
• Dry weather peak flows within +10% and -10%
• Dry weather flow volumes within +10% and -10%
• Wet weather peak flows within +25% and -15%
• Wet weather flow volumes within +20% and -10%
• Wet weather peak depths within +1.6 feet and -0.3 feet
This calibrated and verified model will be used to simulate design storm events, and evaluate the sewer
system response to wet weather, including the 1-year 6-hour storm, 5-year 24-hour storm, and 10-year 24-
hour storm. Baseline (current conditions) and ultimate build out (future growth) scenarios will be
evaluated. The ability of the sewer system to convey baseline and future flows during both dry and wet
weather will be evaluated. Locations of predicted SSOs, surcharging and hydraulic deficiencies will be
identified. Volumes of predicted SSO’s at each location will be provided for each storm event. Pump
station performance will also be evaluated. Tables and figures depicting the performance of the collection
system for each storm event will be developed. Tables will show the length of sewers surcharged by size
ranges, and figures will illustrate locations of SSOs, and sewers that are partially and fully surcharged,
including type of surcharge (i.e., backwater-induced or capacity-related).
This model will identify areas of capacity concern and will be updated annually with data received in a
given year.
Nantucket, MA
CMOM Program Manual
| Collection System Capacity Analysis 7-3
Figure 7-1 Shimmo Capacity Analysis Sewershed Model
Nantucket, MA
CMOM Program Manual
| Sewer System Rehabilitation 8-1
8. Sewer System Rehabilitation
A major goal of the CMOM program is to establish areas of the collection systems that require
rehabilitation and enact appropriate solutions to improve the systems. By analyzing CCTV inspection
reports, the Capacity Analysis Report, and the Infiltration and Inflow (I/I) Report, the NSD will be able to
identify where structural defects and/or operational deficiencies exist in the system. The rehabilitation
efforts will focus primarily on pipes and manholes. NSD has retained the services of a consulting
engineer to assist with this process.
The NSD’s consultant has been reviewing CCTV inspection footage and reports from Year 1 of the
program and developing recommendations for rehabilitation. These recommendations, as well as relevant
PACP quick scores, notes from the inspection, and other data about the pipes, are being input into the
AGO maps. This allows easy access for NSD personnel to review progress or any areas of concern.
The consultant is also providing the NSD with monthly reports of “high priority” pipes, classified as those
pipes which receive a PACP score of 4 or 5, and a notice in any instances where a severely defective pipe
is discovered. For a pipe to be considered severely defective, it must warrant an immediate threat to the
system’s ability to function. Non-urgent recommendations are reviewed monthly with the Sewer
Director, where as severely defective pipes are discussed immediately.
NSD also coordinates regularly with other utilities and town departments, including the Wannacomet
Water Company and Department of Public Works (DPW) to schedule work in accordance with other
projects that may be on going in the Town. In particular, NSD strives to minimize the impact to traffic
and Town roads by scheduling any excavation to coincide with excavation being performed by another
utility. This often allows for one excavation and only one round of paving in the Town. The NSD is
currently striving to follow the Wannacomet Water Company’s 10-year rehabilitation plan to eliminate as
much disruption as possible.
8.1 CCTV Inspections
The NSD plans to inspect 100,000 LF of sewer pipe annually with the assistance of a CCTV contractor.
CCTV inspections will follow the coding and guidelines set forth in the Pipeline Assessment and
Certification Program (PACP) as established by the National Association of Sewer Service Companies
(NASSCO). The reports generated from these inspections will allow the NSD and its consulting engineer
to determine if pipes are structurally sound and if any operational deficiencies exist. The PACP codes are
standardized and grade defects that may be found within pipes. These defects can range from minor
cracks to holes in the pipe, through which voids are visible.
The CCTV Contractor will also carry out level 1 manhole inspections following NASSCO’s Manhole
Assessment Certification Program. Like PACP coding, MACP provides standardized codes that will
allow the NSD and their consultant to determine the severity of any defects exist within the manhole
structure and appropriate rehabilitation methods. These inspections began in late February 2018 and are
continuing annually in conjunction with the CCTV pipeline inspections.
Nantucket, MA
CMOM Program Manual
| Sewer System Rehabilitation 8-2
8.2 Capacity Analysis Report
As described in Section 7, a capacity analysis report was created for the collection systems in Nantucket.
This report will help the NSD and identify hydraulic bottlenecks, which may cause Sanitary Sewer
Overflows (SSOs). The NSD would then be able to evaluate alternatives to mitigate the possibility of
SSOs in those areas. In this case, rehabilitation options may be more limited. These options will be
further discussed in Section 8.4.
8.3 Infiltration and Inflow Report
The I/I Report will identify areas in the systems where excessive infiltration and inflow are creating
unnecessary burden on the infrastructure. It is important to remove or mitigate these sources to alleviate
additional flow both in the pipes, which may not be sized to pass the additional flow, and at the WWTP,
where the NSD must treat the additional flow. Meters were installed in March 2018 and removed in July
2018.
8.4 Pipe Rehabilitation Options
The data generated from the processes described in Sections 8.1 through 8.3 will allow the NSD and its
consultant to recommend effective rehabilitation for the defects discovered in the system. Rehabilitation
options can be classified into two distinct groups: trenchless technology and open cut repair. Year 1 pipe
inspections were evaluated by Hazen and Sawyer and design of these rehabilitation recommendations
began in March 2019.
8.4.1 Trenchless Technology
Trenchless technology implies that no excavation will be necessary to complete the prescribed
rehabilitation. Most commonly, this refers to full length Cured-In-Place-Pipe-Lining (CIPPL) and short
liners used for Internal Spot Repairs (ISRs). In both cases, a flexible liner, coated in resin, is inserted into
the pipe before being inflated and cured with steam or ultra-violet (UV) light. Both CIPPL and ISRs are
typically structural and act as if you have installed a new pipe within an existing pipe. These are often
valuable, cost effective tools to repair non-major structural defects. Some examples where CIPPL and
ISRs can be used include, but are not limited to, cracks, fractures, and infiltration stains.
Some defects can also be repaired internally using grout. Specially engineered grout can be injected into
imperfect joints to seal them and prevent infiltration/exfiltration.
A fourth trenchless option is pipe bursting, a process in which a new HDPE pipe is pulled through the
existing pipe using specialized equipment. The new pipe expands (“burst”) the existing defective pipe,
allowing the new pipe to lay in the same alignment as the original pipe. Pipe bursting has several inherent
challenges and is typically only recommended as a final alternative to a full length open cut pipe
replacement.
Nantucket, MA
CMOM Program Manual
| Sewer System Rehabilitation 8-3
8.4.2 Open Cut Repair
Open cut repair requires the excavation of a trench and is often more costly than trenchless rehabilitation
options. Open cut repair is typically only recommended in cases where trenchless technology cannot
repair the defect. Some examples include, but are not limited to, holes where a void is visible, capacity
restrictions, and deformed or collapsed pipes.
Open cut repairs can be grouped as Excavated Point Repairs (EPRs) and full-length pipe replacements.
When performing an EPR, only a small portion of the pipe run is replaced. EPRs are typically
recommended when the majority of the pipe is in good condition or can be rehabilitated by a trenchless
technology. A full-length pipe replacement is the most resource intensive option for rehabilitating sewer
pipe and is recommended only when no other alternative is viable.
8.5 Manhole Rehabilitation
Manholes can have a number of defects, both structural and operational, which can be repaired without
replacing the entire manhole. Depending on the severity of the defects, manholes may need to be replaced
via excavation. Commonly, manholes will require masonry work to repair crumbling bricks, missing
mortar, or missing pieces of the manhole, such as the bench and invert at the bottom. Maintaining
manhole structures can prevent blockages in the system, limit I/I, and prevent surface problems, such as
pavement degradation. Manholes recommended for rehabilitation are included in the design task for the
Year 2 CMOM contract with Hazen and Sawyer.
8.6 Additional Rehabilitation and Maintenance Programs
In addition to structural defects, special consideration will be given to rehabilitation of operational
deficiencies. This may include sewer line cleaning and implementation of a root control/treatment
program. The CCTV inspections will allow the NSD to identify areas that require cleaning to remove
debris, grease, or any other items that may be clogging the sewer pipes. The NSD is also currently
establishing a Fats, Oils, and Grease (FOG) program, which will educate the public on what should not be
put down the drain, as well as establish cleaning protocols for areas of the collection systems that
experience heavy FOG loading.
CCTV inspections will also identify root ingress. Root growth in the sewer pipes can cause flow
obstruction, structural damage, and allow for infiltration/exfiltration. In many cases, the roots can be cut
out using cutting attachments on the jet trucks. These hydraulically driven saws spin at high RPMs and
cut through the roots, which can then be removed via traditional cleaning. Roots can also be chemically
treated to cause root death. The NSD will work with its consulting engineer to develop a root control
program as part of the CMOM effort.
Nantucket, MA
CMOM Program Manual
| Appendix A: Templates for Sewer Complaints A-1
Appendix A: Templates for Sewer Complaints
Nantucket, MA
CMOM Program Manual
| Appendix A: Templates for Sewer Complaints A-2
This Page Intentionally Left Blank for Printing Purposes
Work Order Template
Work Order Example
THIS PAGE INTENTIONALLY LEFT BLANK
Nantucket, MA
CMOM Program Manual
| Appendix B: SSO Forms B-1
Appendix B: SSO Forms
Nantucket, MA
CMOM Program Manual
| Appendix B: SSO Forms B-2
This Page Intentionally Left Blank for Printing Purposes
Appendix B ssoform • rev. 01/2013 Wastewater Overflow/Bypass or Sewage Backup Notification • Page 1 of 3
Massachusetts Department of Environmental Protection
Bureau of Resource Protection – Watershed Permitting Program
Sanitary Sewer Overflow (SSO)/Bypass
Notification Form
FOR DEP USE ONLY
Tax Identification Number
A. Reporting Facility
Important: When
filling out forms
on the computer,
use only the tab
key to move your
cursor - do not
use the return
key.
1. Facility Information
Reporting Sewer Authority
Permit #
2. Authorized Representative Transmitting Form:
First Name
Last Name
Telephone No.
Title
E-mail Address
B. Phone Notifications:
See DEP
Regional Office
telephone and
fax numbers at
the end of this
form.
1. MassDEP staff contacted:
first name
last name
Date/Time contacted:
Date
Time am pm
2. EPA staff contacted:
first name
last name
Date/Time EPA contacted:
Date
Time am pm
3. Board of Health contacted:
First Name
Last Name
Date/Time contacted:
Date
Time am pm
4. Others notified (select all that apply); Conservation Commission
Harbormaster Shellfish Warden Division of Marine Fisheries
Downstream Drinking Water Supplier Watershed Association
Beach Resource Manager Other:
(specify)
C. SSO Information
1. SSO Discovered:
Date
Time am pm
By:
2. SSO Stopped:
Date
Time am pm
3. SSO Discharge from: Sanitary Sewer Manhole Pump Station
Backup into Property Other:
(specify)
4. SSO Discharge to: Ground Surface (no release to surface water)
Direct to Receiving Water
(surface water)
Catch basin to Receiving Water
(surface water)
Backup into Property Basement
Appendix B ssoform • rev. 01/2013 Wastewater Overflow/Bypass or Sewage Backup Notification • Page 2 of 3
Massachusetts Department of Environmental Protection
Bureau of Resource Protection – Watershed Permitting Program
Sanitary Sewer Overflow (SSO)/Bypass
Notification Form
FOR DEP USE ONLY
Tax Identification Number
C. SSO Information (cont.)
Location:
(Description of discharge site or closest address)
5. Estimated SSO Volume at time of this Report:
Method of Estimating Volume:
6. Cause of SSO Event:
Rain Event Pump Station Failure Insufficient Capacity in System
Treatment Unit failure
Sewer System Blockage: Pipe Collapse Root Intrusion Grease Blockage
Other:
(Specify)
7. Corrective Actions Taken:
Impact Area cleaned and/or disinfected: Yes No
Corrective Actions Completed: Yes No
D. Comments/Attachments/Follow-up
I wish to provide (select all that apply):
Attachment Additional comments below: No additional comments or attachments
Additional comments and planned actions:
Appendix B ssoform • rev. 01/2013 Wastewater Overflow/Bypass or Sewage Backup Notification • Page 3 of 3
Massachusetts Department of Environmental Protection
Bureau of Resource Protection – Watershed Permitting Program
Sanitary Sewer Overflow (SSO)/Bypass
Notification Form
FOR DEP USE ONLY
Tax Identification Number
E. Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or persons
who manage the system, or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am
aware that there are significant penalties for submitting false information, including the possibility of
fine and imprisonment for knowing violations.
Signature of Authorized Representative
Date Signed
Please keep a copy of this report for your records. When submitting additional information, include
the MassDEP Incident Number from this report.
MassDEP Regional Office and EPA Telephone and Fax Numbers:
Northeast Region Phone: 978-694-3215 Fax: 978-694-3499
Southeast Region Phone: 508-946-2750 Fax: 508-947-6557
Central Region Phone: 508-792-7650 Fax: 508-792-7621
Western Region Phone: 413-784-1100 Fax: 413-784-1149
EPA Contact Phone: 617-918-1870 Fax: 617-918-0870
DEP 24-hour
emergency Phone: 888-304-1133
THIS PAGE INTENTIONALLY LEFT BLANK
Nantucket, MA
CMOM Program Manual
| Appendix C: Checklist for Proposed Expansion of Sewer District C-1
Appendix C: Checklist for Proposed Expansion of
Sewer District
Nantucket, MA
CMOM Program Manual
| Appendix C: Checklist for Proposed Expansion of Sewer District C-2
This Page Intentionally Left Blank for Printing Purposes
THIS PAGE INTENTIONALLY LEFT BLANK
Nantucket, MA
CMOM Program Manual
| Appendix D: Application for Permit for Sewer Extension D-1
Appendix D: Application for Permit for Sewer
Extension
Nantucket, MA
CMOM Program Manual
| Appendix D: Application for Permit for Sewer Extension D-2
This Page Intentionally Left Blank for Printing Purposes
Nantucket Extension • Page 1 of 7
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater
Town Use Only:
Permit Number
Application Date:
The original of the transmittal form and this application, signed by the appropriate municipal official,
should be submitted along with one copy to the Sewer Department. The signature of the design
engineer or other agent will be accepted only if accompanied by a letter of authorization. A copy of the
transmittal form shall be sent to the Board Of Health.
If the project includes sewers, pumping stations, force mains, or siphons, construction plans must be
submitted with the application.
If additional space is required to properly answer any questions, please attach additional sheets and
refer to the attachments in the space provided.
A. Applicant Information
1. Name and Address of Applicant:
Name
Street address
City/Town Zip Code
Telephone Number (include area code and extension) E-mail address (required)
2. Name of Sewer System Owner:
Name
Municipality or Sewer District
Department
B. Project Information
1. Type of Project: Sewer Extension Sewer Connection Industrial Connection
2. Number of Residences to be served:
3. Number of Bedrooms:
MAP__________ PARCEL_____________
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater Permit Number
Town
B. Project Information (Continued)
4.Industrial establishment to be served:
a.
Name
Address
Type of Establishment
Design Flow
5. Design Flow:
Sewage Gallons per day
Industrial Wastes Gallons per day
Total Gallons per day
6.Location, Length, Size and Capacity of Sewers to be Connected to the existing system (attach
sketch):
a.
Name of Street
Length of Sewer Size of Sewer Flow Full Capacity
b.
Name of Street
Length of Sewer Size of Sewer Flow Full Capacity
c.
Name of Street
Length of Sewer Size of Sewer Flow Full Capacity
7.Location, Length, Size and Capacity of Pumping Stations to be Connected to the existing system:
a.
Pump Station Location
Number of Pumps Pump Size Pump Capacity
b.
Pump Station Location
Number of Pumps Pump Size Pump Capacity
Nantucket Extension • Page 3 of 7
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater Permit Number
Town
B. Project Information (continued)
8. General Description of Sewers and Pump Stations within the existing sewer system which will
transport the flow from the proposed sewer extension of connection to the receiving Wastewater
Treatment Facility. If the sewer extension or connection includes a privately owned pump station, the
application must include documentation detailing plans for the continual operation, maintenance,
financial assurance for emergency repair and long-term replacement of the privately owned pump
station.
9. Receiving Wastewater Treatment Facility:
Name
Average Daily Flow
Million gallons per day
Design Flow
Million gallons per day
10. Does the discharge contain any industrial waste? Yes No
If yes, list any pollutants which you know or have reason to believe are discharged or may be
discharged. For every pollutant you list, please indicate its approximate concentration in the
discharge and any analytical data in your possession which will support your statement. Additional
wastewater analysis may be required as part of this application.
Pollutant Concentration Analytical Data
11.Does the discharge contain any industrial waste containing substances or materials which could harm
the sewers, wastewater treatment process, or equipment; have an adverse effect on the receiving
water; or could otherwise endanger life, limb, public property, or constitute a nuisance?
Yes No
Nantucket Extension• Page 4 of 7
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater Permit Number
Town
B. Project Information (continued)
12.Do the wastewaters receive any pretreatment prior to discharge?
Yes No If yes, provide detailed description.
13.List, in descending order of significance, the four (4) digit standard industrial classification (SIC)
Codes which best describe the facility producing the discharge in terms of the principal products for
services provided. Also, specify each classification in words.
SIC Code Specify
A.
14. Is the Proposed Discharge Consistent with Existing Sewer Use Regulations?
Yes No
15.Is there a site of historic or archeological significance, as defined in regulations of the Massachusetts
Historical Commission, 950 CMR 71.00, which is in the area affected by the proposed extension or
connection?
Yes No
16.Does this project require a filing under 301 CMR 11.00, the Massachusetts Environmental Policy Act?
Yes No
If yes, has a Filing been made?
Yes No
17.Name and Address of Mass. Registered Professional Engineer Designing Proposed System:
Name
Street
City/Town Zip Code
Telephone Number Mass. P.E. Number
Nantucket Extension • Page 5 of 7
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater Permit Number
Town
C. Certification
Printed Name of Applicant
Title
Signature of Applicant
Date Signed
Name of Preparer
Title
Phone Number
"I certify under penalty of law that this document and all
attachments were prepared under my direction or
supervision in accordance with a system designed to
assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry
of the person or persons who manage the system, or
those persons directly responsible for
gathering the information, the information submitted is, to
the best of my knowledge and belief, true accurate, and
complete. I am aware that there are significant penalties
for submitting false information, including the possibility of
fine and imprisonment of knowing violations."
(I will be responsible for publication of public notice of the
applicable permit proceedings identified under 314 CMR
2.06(1)(a) through (d).)
D. General Conditions
1. General Conditions
a.All discharge authorized herein shall be consistent with the terms and conditions of this permit
and the approved plans and specifications. The discharge of any wastewater at a level in excess
of that identified and authorized by this permit shall constitute a violation of the terms and
conditions of this permit. Such a violation may result in the imposition of civil and/or criminal
penalties as provided for in Section 42 of the State Act.
b.After notice and opportunity for a hearing, this permit may be modified, suspended, or revoked in
whole or in part during its term for cause including, but not limited to, the following:
(1) Violation of any terms or conditions of the permit;
(2)Obtaining a permit by misrepresentation or failure to disclose fully all relevant facts; and
(3) A change in conditions or the existence of a condition which requires either a temporary or
permanent reduction or elimination of the authorized discharge.
c.In the event of any change in control or ownership of facilities from which the authorized
discharges originate, the permittee shall notify the succeeding owner or operator of the existence
of this permit by letter, a copy of which shall be forwarded to the Director. Succeeding owners or
operators shall be bound by all the conditions of this permit, unless and until a new or modified
permit is obtained.
Nantucket Sewer Extension• Page 6 of 7
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater Permit Number
Town
D. General Conditions (continued)
d.The issuance of this permit does not convey any property rights in either real or personal
property, or any exclusive privileges; nor does it authorize or relieve the permittee of any liability
for any injury to private property or any invasion of personal rights; nor any infringement of
Federal, State, or local laws or regulations; nor does it waive the necessity of obtaining any local
assent required by law for the discharge authorized herein.
e.The provisions of this permit are severable, and the invalidity of any condition or subdivision
thereof shall not make void any other condition or subdivision thereof.
f.All information and data provided by an applicant or a permittee identifying the nature and
frequency of a discharge shall be available to the public without restriction. All other information
(other than effluent data) which may be submitted by an applicant in connection with a permit
application shall also be available to the public unless the applicant or permittee is able to
demonstrate that the disclosure of such information or particular part thereof to the general
public would divulge methods or processes entitled to protection as trade secrets in accordance
with the provisions of M.G.L. c.21, s.27(7). Where the applicant or permittee is able to so
demonstrate, the Director shall treat the information or the particular part (other than effluent
data) as confidential and not release it to any unauthorized person. Such information may be
divulged to other officers, employees, or authorized representatives of the Commonwealth or the
United States Government concerned with the protection of public water or water supplies.
g.Transfer of Permits
(1)Any sewer system extension or connection permit authorizing an industrial discharge to a
sewer system is only valid for the person to whom it is issued, unless transferred pursuant to
314 CMR 7.13. Such permits shall be automatically transferred to a new permittee if:
A.The current permittee notifies the Director at least 30 days in advance of the proposed
transfer date; and
B.The notice includes a written agreement between the existing and new permittee
containing a specific date for transfer of permit responsibility, coverage, and liability
between them.
(2)Any sewer system extension or connection permit not subject to 314 CMR 7.13(1)
automatically transfers to a subsequent owner, operator, or occupant.
2. Special Conditions
Nantucket Sewer Extension • Page 7 of 7
Town Of Nantucket Sewer Department
Application for Permit for Sewer System Extension,
Connection, or Industrial Wastewater Permit Number
Town
E. Approval Recommended
Signature and Title Sewer Department:
Printed Name of Official
Title Phone Number
Signature Date Signed
Signature and Title Planning Department:
Printed Name of Official
Title
Signature
Phone Number
Date Signed
Signature and Title Board of Health:
Printed Name of Official
Title
Signature
Phone Number
Date Signed
THIS PAGE INTENTIONALLY LEFT BLANK