Title
Contract No. 2202974
Lime O&M
Body
Agenda of: October 26, 2022
Item No.: 2022-450
Amount: $1,536,120.00
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Suzanne R. Coffey, P.E.
Interim Chief Executive Officer
Great Lakes Water Authority
DATE: September 30, 2022
RE: Contract No. 2202974
Lime
Vendor: Carmeuse Lime, 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. 2202974, "Lime" with Carmeuse, Inc., at a cost not to exceed $1,536,120.00 for a duration of One (1) Year; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
The National Pollutant Discharge Elimination System (NPDES) Permit MI0022802 requires the Water Resource Recovery Facility (WRRF) to limit solids discharged into the Detroit River and Rouge River. The largest portion of solid waste derived from wastewater treatment is the solids. On occasions when solids production exceeds the available incineration or Biosolids Dryer Facility (BDF) capacities, the excess sludge is diverted to the WRRF Central Offloading Facility (COF). The solids processed through the COF is stabilized using calcium hydroxide (lime). Lime is a required additive to stabilize and suppress odor of biosolids produced prior to disposal. This process is regulated by EPA part 503 Biosolid Rule as required by our NPDES permit. This contract will ensure the supply of lime as necessary for the WRRF.
JUSTIFICATION
Solids disposal is a key factor for GLWA-WRRF to remain compliant with the NPDES permit. Although WRRF prioritizes biosolids disposal via BDF and then Incineration, COF remains a key component for permit compliance when the above facilities experience interruptions, or during the extreme wet we...
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