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Item 1.B.
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| City Council Regular | |
| Date: | 05/27/2025 |
| Title: | W.O. 19-12, West End Reservoir Project: GC/CM Contract Change Order No. 5, Pump Station Electrical Installation, Fill Material Delivery, and Box Culvert & Pipe Procurement |
| Presented by: | Debi Meling |
| Department: | Public Works |
| Presentation: | No |
| Legal Review: | Template Contract |
| Project Number: | N/A |
RECOMMENDATION
Staff recommends that the City Council approve Change Order No. 5 to the Standard Agreement and General Conditions Between Owner and General Contractor/Construction Manager (Construction Contract) with Dick Anderson Construction, Inc. for the W.O. 19-12: West End Reservoir Project for a Guaranteed Maximum Price of $6,102,529.48.
BACKGROUND (Consistency with Adopted Plans and Policies, if applicable)
| On December 11, 2023, City Council approved a Construction Contract with DAC for the West End Reservoir Project in the amount of $153,211.35. This initial contract Guaranteed Maximum Price (GMP) allowed the Project Team to begin dewatering the reservoir site through rental of temporary pumping equipment and purchase of permanent dewatering equipment. Change Order No. 1 for the procurement of an electrical equipment substation for the Raw Water Pump Station (RWPS) for a GMP of $408,352.64 was approved by City Council on August 26, 2024. Early procurement of this equipment ahead of construction was necessary to maintain overall project schedule due to the 40-week lead time in delivering the project site. On November 25, 2024, City Council approved Change Order No. 2 for the construction of the BBWA Raw Water Delivery (RWD) Facilities in a GMP amount of $13,553,020.76. Work includes construction of a BBWA Unloader Structure, Screen Structure, Diversion Channel, Raw Water Pump Station (RWPS), a Canyon Creek Diversion Structure, gravel access roads, and 36, 42, and 60-inch connecting piping. Change Order No. 3 for dewatering pumping improvements for a GMP of $165,070.04 was approved by City Council on December 16, 2024 and allowed for construction of pumping systems that enabled more efficient winter operations and continuous dewatering of the north reservoir site. On January 27, 2025, City Council approved Change order No. 4 for a GMP of $2,168,482.86 to clear a portion of the future north reservoir cell, remove refuse, and install 5,000 linear feet of permanent dewatering drain pipe. Exploratory excavation located buried concrete and confirmed depth to shale. Material excavated to install the dewatering pipe was placed in lifts adjacent to the dewatering trench to 10-12 feet above grade for future installation of WEWTP Zone 3 water transmission main. Change Order No. 5 now under consideration includes: · Installing components procured under Change Order No. 1 and other electrical equipment to control and operate the Raw Water Pump Station, BBWA Unloader Structure, Screen Structure, and Canyon Creek Diversion Structure. · Clearing and grubbing the City’s north reservoir cell property, excavating 500,000 cubic yards of material, and hauling it to and depositing it on the adjacent property. · Procuring a 6’ x 5’ x 150’ concrete box culvert to connect the north and south reservoir cells and various lengths of 24", 30", 42" and 48" fiberglass reinforced pipe to complete deep utility work. Installing the culvert and pipe beneath Hesper Road would occur later this summer under a future change order, but it is being procured now due to long delivery lead time. · Procuring an 8’ x 8’ x 200’ culvert to serve as a pedestrian crossing beneath Hesper Road. This culvert would also be installed later this summer under a future change order. Significant cost savings can be realized by combining this culvert installation with other deep utility work in the same area. Portions of work on change orders 1 through 4 are complete and the remainder of the work is progressing satisfactorily. |
ALTERNATIVES
City Council may:
- Approve Change Order No. 5 to the Standard Agreement and General Conditions Between Owner and General Contractor/Construction Manager (Construction Contract) with Dick Anderson Construction, Inc., or,
- Not approve Change Order No. 5. If Council does not approve this change order, the Raw Water Pump Station cannot be operated to deliver water to the WEWTP and Reservoir, and the City cannot begin the initial reservoir excavation and construction, and the culverts and pipe cannot be procured in time to take advantage of schedule and work in proximity-based cost savings that can be realized by installing them later this summer.
FISCAL EFFECTS
The W.O. 19-12: West End Reservoir Project was budgeted in FY25 using Water Funds. The pedestrian crossing culvert in the amount of $294,314.23 will be funded from street vacation funds received from Intermountain Health.
| Budget | $74,000,000.00 |
| Previous Change Orders | $16,294,926.00 |
| This Change Order (includes ped crossing) | $6,102,529.48 |
| Pedestrian Crossing Street Vacation Funds |
$294,314.23 |
| Remaining Budget | $51,896,858.80 |