Carollo aeration diffuser engineering contract amended to $2.57M
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Description
The Commission approved a $91,534 change order with Carollo Engineers, Inc. for extended engineering services on the South Shore Water Reclamation Facility aeration basin diffuser replacement project, bringing the contract total to $2,568,807. The amendment covers additional construction phases and support through June 2029 and restores the Executive Director’s change order authority.
Contract Details
Contract Amount
$91,534 (change order); revised total $2,568,807
Vendor
CAROLLO ENGINEERS INC
Agency
Milwaukee Metropolitan Sewerage District, WI
Contract Type
PROFESSIONAL_SERVICES
Document Date
May 18, 2026
Contract Term
Engineering services through at least June 2029; original contract began July 2020
Renewal Date
2029-06-30
Renewal Info
Original 2020 contract was $2,009,823; previous change orders totaled $467,450; this change order adds $91,534 for a new total of $2,568,807 and extends engineering services support through June 2029 while restoring Executive Director change order authority.
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Issuing Agency
Special District
Milwaukee, WI
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