Title
Proposed Amendment No. 1
Contract No. 2202164/SCN-0000161
Screening & Grit Transportation and Disposal from WRRF & CSO Facilities
O&M
Body
Agenda of: September 23, 2026
Item No.: 2026-373
Amount: Original Contract Price $1,998,900.00
Amendment No. 1 3,124,884.10
New Contract Total $5,123,784.10
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Suzanne R. Coffey, P.E.
Chief Executive Officer
Great Lakes Water Authority
DATE: September 1, 2026
RE: Proposed Amendment No. 1
Contract No. 2202164/SCN-0000161
Screening & Grit Transportation and Disposal from WRRF & CSO Facilities
Vendor: Waste Management of Michigan, 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. 2202164/SCN-0000161, Proposed Amendment No. 1, “Screening & Grit Transportation and Disposal from WWRF & CSO Facilities” with Waste Management of Michigan, Inc., at an increased cost of $3,124,884.10 for a total cost not to exceed $5,123,784.10 and an increased duration of five (5) years for a total duration of seven (7) years; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
As wastewater enters the Water Resource Recovery Facility (WRRF), the influent pump stations lift the wastewater to an elevation allowing it to flow by gravity through the preliminary and primary treatment processes. The preliminary treatment consists of a bar rack to remove rags, sticks, leaves, etc. They are collectively known as screenings from the wastewater stream. Once the screenings are removed, the inorganic material such as sand will settle in large tanks as grit. The screenings and grit are transported by process equipment and temporarily staged in waste storage bins while awaiting pickup and final disposal at the landfill. The scope of work for this contract involves the contractor furnishing all labor, material, supplies, equipment, and disposal sites (landfills) necessary for safe transport and disposal of all screening and grit generated into a state approved, licensed landfill.
JUSTIFICATION
GLWA’s wastewater system captures an estimate of 14,360 tons of screenings and grit a year throughout all its facilities. The National Pollutant Discharge Elimination System Permit MI0022802 requires GLWA to remove and dispose of the captured screenings and grit to limit solids discharged into the Detroit River and Rouge River. A vendor is needed to haul and dispose of screenings and grit from the WRRF and Combined Sewer Overflow Facilities to various state approved landfills.
This specialized procurement is necessary to maintain GLWA’s continuity of service. This service requires equipment, licensing, and disposal facilities that are regulated by the State of Michigan. Waste Management meets all the State of Michigan requirements for disposal of grit.
The proposed amendment includes a not to exceed 5% annual rate increase. It is GLWA’s opinion that the proposed rate increases are consistent with market cost.
PROJECT MANAGEMENT STATUS
Original Contract Time 2 years (12/14/2022 - 12/13/2024)
Proposed Amendment No. 1 5 years (12/14/2024 - 12/13/2029)
New Contract Time 7 years (12/14/2022 - 12/13/2029)
PROJECT ESTIMATE
Original Contract Price $1,998,900.00
Proposed Amendment No. 1 3,124,884.10
New Contract Total $5,123,784.10
FINANCIAL PLAN IMPACT
Screening and grit transportation and disposal are anticipated as an on-going component of the wastewater financial plan. The use of this service may vary by year, which may require a budget amendment based on that year’s annual use. The current FY 2027 budget and five (5) year financial plan was based on previous volumes and rates. The value of the proposed amendment exceeds the current financial plan in total. Therefore, budget amendments may be required for this service. First offsetting other positive variances within other contractual services or repairs and maintenance budgets, then from the unallocated reserve.
Funding Source: Operations and Maintenance Budget (5960)
Cost Center: BDF, COF & Hauling (892227)
Expense Type: Contractual Operating Services
Estimated Cost by Year and related Forecast Variance:
Fiscal Year Amount
FY 2023 Amended Budget (prorated) $240,206.22
FY 2024 Amended Budget 574,555.95
FY 2025 Amended Budget 610,720.20
FY 2026 Amended Budget 411,693.04
FY 2027 Budget 611,100.00
FY 2028 Financial Plan 647,100.00
FY 2029 Financial Plan 683,100.00
FY 2030 Financial Plan (prorated) 359,550.00
Total Financial Plan $4,138,025.41
Maximum Requisitions $5,123,784.10
Forecast Variance (Negative)/Positive ($985,758.69)
COMMITTEE REVIEW
This item was presented to the Operations and Resources Committee at its meeting on September 9, 2026.
SHARED SERVICES IMPACT
This item does not impact the shared services agreement between GLWA and DWSD.