Title
Contract No. 1902659
Linear System Integrity Program
CIP 170600 / O&M; BCE: N/A
Body
Agenda of: May 26, 2021
Item No.: 2021-174
Amount: $29,012,865.00
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Sue F. McCormick
Chief Executive Officer
Great Lakes Water Authority
DATE: May 1, 2021
RE: Contract No. 1902659
Linear System Integrity Program
Vendor: HDR Michigan, Inc.
MOTION
Upon recommendation of Suzanne Coffey, Chief Planning Officer, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Chief Executive Officer (CEO) to enter into Contract No. 1902659, "Linear System Integrity Program" with HDR Michigan, Inc., at a cost not to exceed $29,012,865.00 for a duration of six years; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
GLWA's water transmission system has an inventory of pipelines dating back to 1854 with the current average pipe age of approximately 70 years. Pipe materials mainly consist of prestressed concrete cylinder pipe (PCCP), cast iron pipe, ductile iron pipe, and steel pipes. GLWA operates and maintains over 800 miles of transmission mains, with over half being PCCP pipe, the largest inventory of PCCP pipe in the United States.
As the transmission mains near expected useful life, an increase in failures will occur unless proactive condition assessment is performed and identified pipe segment renewals are carried out. Because gaining access to the closed pipeline systems is challenging, in 2020, GLWA completed a risk model to prioritize transmission mains for assessment and renewal. Furthermore, these inspections are challenging because condition assessment of these critical mains may require construction of access points for equipment entry and retrieval. Many peer utilities with similar inventory of transmission mains have established assessment and renewal program...
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