Sandy Ionwave #25-70- - Public Works Addendum 7

Sandy City Pepperwood and Wildflower Backup Generator Site and Electrical Improvements

Sandy City’s 2026 Backup Power Generators project combines construction at Pepperwood Pump Station with electrical upgrades at Wildflower Well. - Government buyer: Sandy City Corporation, Public Utilities Department / Public Works, Sandy, Utah. Purchasing contact identified: Georgia Keyser, Purchasing Agent. - Project: Install a city-provided stationary backup generator at Pepperwood and prepare Wildflower Well for connection to a mobile generator. Bowen Collins & Associates is identified as the engineer. - OEMs and vendors: MTU/Rolls-Royce equipment includes the generator and digital controller; ASCO is identified for the automatic transfer switch (ATS) and as an acceptable alternate manufacturer for the MTS; Atlas Copco is referenced for a QAS700 generator option. Smith Power Products, Inc. is the named provider to coordinate manufacturer-required testing; testing services are pre-purchased by the City. The attachments also identify Bowen Collins & Associates. - Major equipment: One 550-kW MTU-RR 12V1600 DS550 diesel generator set (part number DS550; submittal also identifies mtu 12V1600 DS550), one 1,600A ASCO Series 300 delayed-transition ATS (part number G3ADTSA31600NGXM), and one 1,000-gallon diesel fuel tank. The generator and ATS are pre-purchased City equipment for installation, not separate equipment purchases in the construction bid. The bid includes 1,000 gallons of generator fuel. - Construction and site work: Excavation and clearing; possible 10 tons of over-excavation and 160 cubic yards of structural backfill; replacement of an existing masonry wall and construction of a concrete retaining wall; 492 sq. ft. of driveway, 200 sq. ft. of equipment pad, and 163 sq. ft. of maintenance access; 210 linear feet of anti-scale wrought-iron fence, a 15-foot vehicle gate, and a 3-foot man gate; landscaping and irrigation. - Electrical and testing work: Install the Pepperwood generator and associated electrical equipment; make Wildflower Well electrical upgrades for mobile-generator connection. Coordinate required generator tests and reports with Smith Power Products; the contractor supplies fuel before testing. The generator package includes technician startup and site load-bank testing. - Notable technical requirements: Generator submittal specifies a 550-kWe, 277/480V, three-phase, 60-Hz unit with Level 3 sound attenuation, EPA Tier 2 compliance, and UL 2200 certification. It also identifies a 5-year/2,000-hour warranty and seismic certification requirements. Preserve existing vegetation where feasible while completing retaining-wall work.

Description

Sandy City is seeking bids for construction of site improvements for a new stationary packaged generator at the Pepperwood Pump Station and improvements to enable connection to a mobile generator at the Wildflower Well. The work includes a 10-foot concrete retaining wall, generator pad, electrical and landscape improvements, and removal of a significant amount of trees and vegetation. Bid documents also include specifications, drawings, and information about pre-purchased generator equipment. The source lists a response deadline of October 1, 2026 at 2:00 PM MT.

View original listing