Title
Contract No. 2002655
Study and Design Services for Northwest Interceptor Relief Sewer to Oakwood CSO Facility
CIP# 222001 / BCE Score: 53.6
Body
Agenda of: November 25, 2020
Item No.: 2020-396
Amount: $5,599,456.00
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Sue F. McCormick
Chief Executive Officer
Great Lakes Water Authority
DATE: November 4, 2020
RE: Contract No. 2002655
Study and Design Services for Northwest Interceptor Relief Sewer to
Oakwood CSO Facility
Vendor: FK Engineering Associates
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. 2002655 "Study and Design Services for Northwest Interceptor Relief Sewer to Oakwood CSO Facility" with FK Engineering Associates, at a cost not to exceed $5,599,456.00 for a duration of 1,886 days; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
The purpose of the Wastewater Master Plan (WWMP) was to maximize the use of existing facilities to treat the wet weather flows. The Oakwood Pump Station and CSO basin is underutilized and there is a potential to send excess flows from the Northwest Interceptor (NWI) to the Oakwood basin. Some surcharging is caused by overloading the NWI. Flow rates through the Warren-Pierson gates exceed the contract capacity for large storm events. These flow rates combined with the member discharges to the interceptor exceeds the pipe capacity of the NWI. A concept was developed as part of the Oakwood District Analysis in 2016 to isolate the downstream portion of the NWI from the Water Resource Recovery Facility (WRRF) and divert flow to the Oakwood Pump Station. This concept was further evaluated and refined under the WWMP project. The purpose of this project is to study a...
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