Title
Proposed Change Order No. 1
Contract No. 2103380/SCN-0000295
Water Works Park HVAC Improvements
CIP #115005 / BCE Score: 93.0
Body
Agenda of: June 25, 2025
Item No.: 2025-177
Amount: Original Contract Amount $14,953,000.00
Proposed Change Order No. 1 782,490.84
Total Contract Amount $15,735,490.84
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Suzanne R. Coffey, P.E.
Chief Executive Officer
Great Lakes Water Authority
DATE: May 29, 2025
RE: Contract No. 2103380/SCN-0000295
Water Works Park HVAC Improvements
Vendor: Commercial Contracting Corporation
Status: Amendment/Change Order
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. 2103380/SCN-0000295, Proposed Change Order No. 1, “Water Works Park HVAC Improvements” with Commercial Contracting Corporation, at an increased cost of $782,490.84 for a total cost not to exceed $15,735,490.84 with no increase in duration for a total duration of 1,124 days; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
Contract No. 2103380 is a construction services contract that is related to improving the heating, ventilating and air-conditioning (HVAC) system in chemical storage and process areas of the Water Works Park Water Treatment Plant (WWP). During the condition assessment conducted at WWP under a separate contract (Contract No. CS-147), deficiencies with the existing HVAC system in the aforementioned areas were identified. These deficiencies include, but are not limited to, poor mechanical venting, poor air distribution, limited instrumentation and control, limited warning alarms, and limited integration with Ovation Supervisory Control and Data Acquisition System.
The purpose of this project is to improve the existing HVAC system so that it meets or exceeds current codes, standards and best practices for management of indoor air quality. The main rooms where HVAC improvements will be made include the following: fluoride storage room, phosphoric acid storage room, sodium bisulfite storage room, ozone generator room, ozone destruct room, aluminum sulfate bulk storage room, aluminum sulfate day tank room, pilot plant rooms, filter operating galleries, flocculation and sedimentation rooms, and other smaller miscellaneous rooms.
JUSTIFICATION
Proposed Change Order No. 1 is needed to address unexpected site conditions that prevented initial fire alarm design strategies to be code compliant in the flocculation/sedimentation basins. The construction contract bidding phase took place during the Covid-19 pandemic and contractors were not allowed in the facility for a pre-bid walk through. Since the fire alarm design was the responsibility of the Contractor, certain assumptions were made towards the final design of the fire alarm system. During construction, it was determined that the site conditions were not conducive to the planned design configuration. Proposed Change Order No. 1 is requested to pay for additional equipment and labor, not design, to install a code-compliant fire alarm system.
PROJECT MANAGEMENT STATUS
Original Contract Time 1,124 days (8/1/2022 - 8/9/2025)
Proposed Change Order No. 1 0 days
New Contract Time 1,124 days (8/1/2022 - 8/9/2025)
PROJECT ESTIMATE
Original Contract Price $14,953,000.00
Proposed Change Order No. 1 782,490.84
New Contract Total $15,735,490.84
FINANCIAL PLAN IMPACT
Summary: Sufficient funds are provided in the financial plan for this project.
Funding Source: 5519 - Water Construction Fund
Cost Center: 880000 - Capital Improvement Fund
Expense Type: 616900 - Construction
Estimated Cost by Year and Related Estimating Variance: See table below.
Original Contract Price $ 14,953,000.00
Proposed Change Order No. 1 782,500.00
New Contract Total $ 15,735,500.00
Financial Plan Estimate 14,953,000.00
Estimating Variance $ (782,500.00)
The Proposed additional spend is forecasted to be spent as follows: $332,500.00 in FY25 and $450,000.00 in FY26. Budget amendments will be prepared to fund the negative estimating variance from Capital Reserves.
COMMITTEE REVIEW
This item was presented to the Operations and Resources Committee at its meeting on June 11, 2025.
SHARED SERVICES IMPACT
This item does not impact the shared services agreement between GLWA and DWSD.