Wastewater Projects

Regional Treatment Plant Cogeneration and Switchgear Upgrades

Location:
Dana Point, CA
Value:
$9 million
Completion:
July 2017
Owner:
South Orange County Wastewater Authority
Engineers:
HDR, Carollo, and Lee & Ro
Contractor:
Gateway Pacific Contractors

Upgrades to the Regional Treatment Plant included the following: construction of a new masonry building to house the new switchgear; removal of one of the existing 400 kW engine generator units; removal of power and control wiring from the remaining two 400 kW engine generator sets; installation of a new 800 kW engine generator system, new boiler system, and new co-generation control system; replacement of plant switchgear; relocation of temporary hot water pipeline; and replacement of the coating systems within Digester No. 2. The original location for the electrical building was changed due to underground utility conflicts. Several modifications were necessary to accommodate the routing and installation of new electrical service from SCE. Butier’s electrical engineer examined the electrical installation and assisted SOCWA staff with submitting a letter to SCE requesting energization.

The Butier team was responsible for the following: bidding assistance; progress meetings; document controls; reviewing, logging, and tracking RFIs and submittals; schedule review; providing civil/mechanical, structural and electrical inspection; coordinating special testing; change order management; monitoring record drawings; managing project close-out, start-up, testing and final acceptance; stakeholder coordination; monthly progress reports and payments; and performing digester coatings inspection.