Title
Proposed Amendment No. 2
Contract No. 1803709/SCN-0000349
Conveyance System Infrastructure Improvements
CIP# 260701 / BCE Score: 60.1
Body
Agenda of: June 24, 2026
Item No.: 2026-220
Amount: Original Contract: $4,575,838.00
Amendment No. 1 577,989.00
Proposed Amendment No. 2 379,200.00
Contract Amount: $5,533,027.00
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Suzanne R. Coffey, P.E.
Chief Executive Officer
Great Lakes Water Authority
DATE: June 3, 2026
RE: Proposed Amendment No. 2
Contract No. 1803709/SCN-0000349
Conveyance System Infrastructure Improvements
Vendor: Applied Science, Inc.
Status: Amendment/Change Order
MOTION
Upon recommendation of Navid Mehram, Chief Operating Officer - Wastewater Operating Services, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Chief Executive Officer (CEO) to enter into Contract No. 1803709/SCN-0000349, Proposed Amendment No. 2 “Conveyance System Infrastructure Improvements” with Applied Science, Inc. (ASI), with an increased cost of $379,200.00 for a total cost not to exceed $5,533,027.00 and for an increased duration of 365 days for a total duration of 2,737 days; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
GLWA is responsible for the operation and maintenance of over 60 Combined Sewage Overflow (CSO) Outfalls on the Detroit and Rouge Rivers, as well as 16 In-System Storage Devices (ISDs) and 20 Valve Remote (VR) sites throughout the system. These are critical wastewater infrastructure assets that require periodic upgrades to technology and equipment to maintain performance and reliability.
The CSO outfall sites are made up of connecting sewers, diversion dams, regulator gates, and backwater gates. During wet weather periods, CSO outfalls can redirect a portion of the wet weather flow from interceptors to the Detroit or Rouge Rivers, relieving the system.
The ISD sites are comprised of inflatable dams that are normally in a deflated state but can be inflated during times of elevated flow to utilize GLWA’s in-system storage capacity and reduce CSOs. Each ISD site includes a control vault or building that houses blower pumps, vacuum pumps, and valve actuators for inflating and deflating the dams, as well as instrumentation equipment for monitoring wastewater levels and the air pressure of the dam itself.
The VR sites are comprised of electric actuators and sluice gates, which are used to divert flow throughout GLWA’s sewer system to reduce stress on the system during wet weather. The VR gates can also be used to divert flow for inspection and maintenance purposes.
Under GLWA Contract No. 1803709, titled “Conveyance System Infrastructure Improvements”, Applied Science, Inc. (ASI) was tasked with the evaluation of these sites and the design of improvements.
Contract No. 1803709 was followed by two construction Contracts: No. 2102859 and No. 2201142, which have schedules extending into December 2026.
JUSTIFICATION
This proposed amendment is necessary to provide continuity of construction administration support for the two associated GLWA contracts listed above. The construction projects experienced several delays, and an extension to ASI’s contract is required to continue the support through final completion and closeout.
Additionally, ASI’s resources are needed to address several items identified during construction, including redesigns in multiple areas and work required to ensure a smooth transition to Operations and Maintenance (O&M). The components relative to the O&M include a comprehensive updates to the GLWA O&M manuals, revisions to CSO discharge curves (flow calculations) for all 60 outfalls based on field-verified conditions, and redesigns necessitated by unforeseen site constraints and utility conflicts encountered during construction.
Considering these factors, a one-year extension to the contract is requested to continue project management, construction administration, and engineering support, and to allow ASI sufficient time to complete the remaining technical and contract-closeout tasks. GLWA reserves the right to assess liquidated damages against the construction contractors should the extended construction period lack adequate justification or if required deliverables remain incomplete.
PROJECT MANAGEMENT STATUS
Original Contract Time 1,396 days (10/14/2019 - 07/13/2023)
Amendment No. 1 976 days (07/14/2023 - 03/16/2026)
Proposed Amendment No. 2 365 days (3/17/2026 - 03/17/2027)
New Contract Time 2,737 days (10/14/2019 - 03/17/2027)
PROJECT ESTIMATE
Original Contract Price $ 4,575,838.00
Amendment No. 1 577,989.00
Proposed Amendment No. 2 379,200.00
New Contract Total $ 5,533,027.00
FINANCIAL PLAN IMPACT
Summary: Sufficient funds are provided in the financial plan for this project.
Funding Source: 5421 - Sewage Disposal Construction Fund
Cost Center: 880000 - Capital Improvement Fund
Expense Type: 616900 - Construction
Estimated Cost by Year and Related Estimating Variance: See table below.
Original Contract Price $ 4,575,838.00
Amendment No. 1 577,989.00
Proposed Amendment No. 2 379,200.00
New Contract Total 5,533,027.00
Amended Financial Plan Estimate 5,154,000.00
Estimating Variance ($379,200.00)
The award of this amendment provides a negative estimating variance of $379,200.00 to be funded from Capital Reserves.
COMMITTEE REVIEW
This item was presented to the Operations and Resources Committee at its meeting on June 10, 2026.
SHARED SERVICES IMPACT
This item does not impact the shared services agreement between GLWA and DWSD.