Title
Contract No. 1900796
Rehabilitation of CSO Outfalls Phase 2
CIP# 260500 / BCE Score: N/A
Body
Agenda of: August 28, 2019
Item No.: 2019-309
Amount: $4,914,846.29
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Sue F. McCormick
Chief Executive Officer
Great Lakes Water Authority
DATE: August 9, 2019
RE: Contract No. 1900796
Rehabilitation of CSO Outfalls Phase 2
Vendor: LGC Global, Inc.
MOTION
Upon recommendation of Cheryl Porter, Chief Operating Officer - Water and Field Services, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Chief Executive Officer (CEO) to enter into Contract No. 1900796 "Rehabilitation of CSO Outfalls Phase 2" with LGC Global, Inc., at a cost not to exceed $4,914,846.29 for a duration of 16 months; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
Pipeline Assessment and Certification (PACP) inspections for portions of outfalls B-6,
B-15, B-17, B-20, B-23, B-24, B-31, B-36, and B-45 were completed in January 2015. In combination with combined sewer overflow (CSO) frequency data, these outfalls raised concerns with the GLWA regarding their long-term structural integrity. Manual entry inspections, remote-operated vehicle (ROV) inspections, and additional CCTV inspections were completed in November 2017 through June 2018. Based on the above inspections, a repair plan was formulated. This includes rehabilitation of the above-identified outfalls including cleaning, structural repairs, regulator gate and backwater gate rehabilitation, and access hatch replacement. The nine outfalls generally function in a similar fashion, with dry weather flow diverted to the Detroit River Interceptor (DRI), and wet weather flow allowed to outfall to the Detroit River. Outfalls B-6, B-15, and B-31 have diversion dams which redirect dry weather flow to their respective regulator chamber, where the ...
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