Clark Public Utilities Procureware #B722

Clark Public Utilities Ellsworth Substation Expansion – Electrical, Civil, and Aggregate Supply

Clark Public Utilities is seeking a contractor for the Ellsworth Substation Expansion project, which involves significant electrical and civil construction work. - Government Buyer: - Clark Public Utilities - OEMs and Vendors Referenced: - Hood River Sand & Gravel (aggregate supplier) - J.L. Storedahl (aggregate supplier) - Knife River (aggregate supplier) - Products and Materials Requested: - Switchgear (removal and installation oversight) - Transformer (removal and installation oversight, anchoring) - Bus pedestal foundations (removal of 6 existing units) - High security fencing (removal and installation) - Conduit (removal and installation) - Substation top rock and lava rock (installation, with material from approved suppliers) - Switchyard subbase aggregate, surface aggregate (top rock), drain rock/gravel backfill, and pumice rock for landscaping (all with strict gradation and quality requirements) - Services Requested: - Concrete work for foundations (transformer, switchgear, security poles, fence curbing, circuit switcher modifications) - Site grading and stormwater management - Grounding and lighting installation - Power and control wiring (pulling, labeling, conduit and cable labeling) - Unique or Notable Requirements: - All aggregate materials must meet detailed ASTM, AASHTO, and WSDOT standards - BPA laboratory testing required for rock resistivity - Strict technical standards for electrical and civil construction - Only approved aggregate suppliers may be used for substation rock - Emphasis on maintaining electrical/thermal conductivity, water retention, and oil containment in installation - Locations: - Work performed at Ellsworth Substation (Clark County, WA) - BPA TEZT-MODA Laboratory in Vancouver, WA for material testing - Approved aggregate suppliers located in Dallesport, Kelso, Yacolt (WA), and Beaverton (OR)

Description

The project involves the expansion of the Clark Public Utilities Ellsworth Substation. Work includes removal of existing switchgear/transformer foundation, bus pedestal foundations, fence, and conduit where conflicts occur. Concrete work is required for transformer, switchgear, security poles, fence curbing, and modifications to the existing circuit switcher foundation. The contract also covers delivery oversight, anchoring of transformer, bus work, site grading, stormwater management, new conduit, grounding, lighting, high security fence, wiring, labeling, and installation of new substation top rock and lava rock.

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