HomeMy WebLinkAbout251222 Revised Sewer Peer Review Proposal - Woodard - Miscellaneous - 0 Prescott Street 12/22/2025
Town of North Andover, Massachusetts
On-Call Water and Wastewater Engineering Support Services
Town of North Andover Contract No. 1647
Task Order 11
December 22, 2025
Scope of Work and Budget
For
Sewer System Capacity Assessment
For
Zero Prescott Street Residential Development
PROJECT DESCRIPTION
Woodard & Curran will provide engineering services for the assessment of the
impact to the wastewater collection system of the proposed residential
development referred to as Zero Prescott Street. The proposed development
is located on an existing undeveloped parcel at the intersection of Prescott
Street and High Street and is proposed to discharge directly to the existing East
Side Trunk Sewer upstream of High Street according to the Comprehensive
Permit Application submitted to the Town by the developer.
SCOPE OF WORK
1. Review the Comprehensive Permit Application. We will review
applicable sections of the Comprehensive Permit Application
submitted to the Town by the developer relative to the proposed sewer
connection and the proposed number of units and bedrooms in order
to estimate a projected wastewater flow for the development.
2. Review Record Information. We will review available sewer collection
system information to establish existing sewer system invert elevations,
pipe diameters and slopes of the affected gravity sewer system
components based on sewer record drawings. The affected collection
system components include the East Side Trunk Sewer from Walker
Road to Sutton Street, and gravity sewers in Sutton Street and North
Main Street.
3. Determine Proposed Wastewater Flows. We will estimate the projected
wastewater flows for the project to be used to evaluate impacts of the
project on the existing wastewater collection system based on the
number of proposed bedrooms and 310 CMR 15, the Massachusetts
State Environmental Code, Title 5.
4. Determine Existing Wastewater Flow. We will have our sub-consultant,
Flow Assessment Services, install two flow meters on the existing East
Trunk Sewer downstream of the development for a one month period
to estimate existing baseline flow in the affected sewers. One meter will
be installed to establish flow in the East Trunk Sewer at Sutton Street
and one meter will be installed in North Main Street before the Central
Interceptor Sewer connection. We will review flow records from GLSD
Meter No. 2 to estimate existing flow to the meter from the East Side
Trunk Sewer and the Central Interceptor Sewer. We will review rainfall
data from the Lawrence Municipal Airport rain gage to estimate rainfall
intensity during rain events during the metering period for use in the
sewer model.
Task 4 does not include the cost of the sewer metering which we
anticipate will be covered under another Task Order and paid for
by the Town.
5. Evaluate System Impacts. Based on Items 1 - 4 above, we will utilize
sewer system modeling software to determine if projected wastewater
flows from the proposed project exceed the gravity sewer system
capacity, determine impacts to the gravity sewer system from the
location of the proposed project to GLSD Meter No. 2, and recommend
mitigation requirements for affected sewer segments. The affected
collection system components include:
A. East Side Trunk Sewer from Walker Road to Sutton
Street.
B. Gravity sewer on Sutton Street from Charles Street to
North Main Street
Town of North Andover 2 Woodard & Curran, Inc.
Zero Prescott Street Sewer Assessment December 22, 2025
C. Gravity sewer on North Main Street from Sutton Street to
the Central Interceptor Sewer connection.
D. Gravity sewer on North Main Street from the Central
Interceptor Sewer connection to GLSD Meter No. 2.
6. Report. We will present the findings of the capacity assessment in a
letter report summarizing the impacts of the proposed project on the
wastewater collection system and recommending mitigation efforts
required to accommodate the proposed flow if required.
7. Meetings. We have budgeted one meeting with the Town in this scope
of work.
8. Deliverables
A. Attendance at one meeting with the Town
B. A draft and final letter report
SCHEDULE
Work shall commence on receipt of your Notice to Proceed and all services will
be completed within 12 weeks of receipt of all required information from the
Town and the development proponent.
BUDGET
The estimated budget for our services under this Task Order is $15,000 which
will not be exceeded without written authorization from the Town.
Woodard & Curran will prepare a monthly invoice for our services in accordance
with our On-Call Water and Wastewater Engineering and Support Services
contract with the Town. No. 1647.
Town of North Andover 3 Woodard & Curran, Inc.
Zero Prescott Street Sewer Assessment December 22, 2025