LCLS II Utilities Relocation – ESP

Contract Value$3.3MProject TypeInfrastructureCore CompetencyDry UtilitiesEarthwork and GradingPavingWet Utilities

This mission critical project took place during a scheduled 8 week shutdown of the LCLS I experimental tunnel. The purpose of this project was to relocate an existing 12kV duct bank; mechanical, low conductivity, and domestic water lines from a depth of 21’ deep to 6’ below grade, in preparation for the construction of a future drilled tunnel. Work included: Excavation, shoring, and installation of 12kV duct bank, 18” cooling tower water, 10” domestic water, and 2” low conductivity water lines; installation of a pre-cast concrete manhole; coordination of 2 (ea) electrical shutdowns and re-routing of electrical systems in lieu of providing above grade temporary power; installation of fiber optic cable; backfill for future tunnel boring with Control Density Fill; backfill with approved soils; installation of concrete pad and asphalt pathway; restoration of pavement and concrete surfaces; and restoration of landscaped areas.

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