Title
Contract No. 2303191
Clarifloc DPA-7-0335
O&M
Body
Agenda of: October 25, 2023
Item No.: 2023-350
Amount: $ 7,380,000.00
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Suzanne R. Coffey, P.E.
Chief Executive Officer
Great Lakes Water Authority
DATE: September 21, 2023
RE: Contract No. 2303191
Clarifloc DPA-7-0335
Vendor: Polydyne, Inc.
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. 2303191, “Clarifloc DPA-7-0335” with Polydyne, Inc., at a cost not to exceed $7,380,000.00 for a duration of three (3) years plus two (2) 1-year renewal options; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
The GLWA Water Resource Recovery Facility (WRRF) produces approximately 295 wet tons of sludge daily as a byproduct of wastewater treatment process. This sludge typically contains 90-95% water, and to prepare it for further processing in our solids processing facilities, we need to reduce its water content to a range of 75-80%. This is accomplished through the utilization of belt filter press units, which effectively compress the sludge and extract the excess water, achieving the desired concentration. Prior to entering the belt filter press, we employ a polymer coagulant, specifically Clarifloc DPA-7-0335, a proprietary blend supplied by Polydyne. These polymers, organic substances, enhance the efficiency of coagulation with solids, resulting in the formation of larger and more stable floc. The addition of polymers in the dewatering process significantly reduces solids in the recycle stream and increases the percentage of solids in the dewatered sludge cake. This procurement requires the vendor to adhere to all local, state, and federal laws, ordinances, rules, and regulations pertaining to the safe transportation and handling of this organic polymer.
JUSTIFICATION
The use of Polymer is essential for efficient dewatering of the removed solids separated from the treatment process for further processing. Solids management is critical for staying compliant with the facility’s National Pollutant Discharge Elimination System (NPDES) permit.
FINANCIAL PLAN IMPACT
Summary: The use of polymer is anticipated as an on-going component of the wastewater financial plan. The use of this product may vary by year, which may require a budget amendment based on that year’s annual use. The maximum value of the contract exceeds the current financial plan for this chemical. Should this contract be exercised beyond the forecasted quantity, a budget amendment may be needed. First, offsetting other chemical costs that may be reduced, then from other areas, and finally from the unallocated reserve.
Funding Source: Operations & Maintenance Budget
Cost Center: Wastewater Dewatering Processing (Sewerage cost center 892225)
Expense Type: Operating Supplies - Chemicals (621600)
Estimated Cost by Year and Related Estimating Variance: See table below.
Fiscal Year Amount
FY 2024 Budget (prorated) $551,700
FY 2025 Plan 1,340,000
FY 2026 Plan 1,357,900
FY 2027 Plan 1,357,000
FY 2028 Plan 1,357,000
FY 2029 Plan (prorated) 840,500
Financial Plan Forecast $6,803,200
Maximum Contract $7,380,000
Forecast Variance ((Negative) Positive -$576,800
COMMITTEE REVIEW
This item was presented to the Operations and Resources Committee at its meeting on October 11, 2023. The Operations and Resources Committee unanimously recommended that the GLWA Board adopt the resolution as presented.
SHARED SERVICES IMPACT
This item does not impact the shared services agreement between GLWA and DWSD.