Burris Pump Station Project—Phases I and II
- Anaheim, California
- $24 million
- Orange County Water District
- Tetra Tech
- Pacific Hydrotech Corporation
- CalGeo 2017 Large Project of the Year and ASCE 2014 Flood Management Project of the Year
- Photo Credit:
- Mol Goodman Photography
Orange County Water District selected Butier Engineering, Inc. to provide constructability review services (Phase I) and construction management and inspection services (Phase II) for the Burris Pump Station Project located in the City of Anaheim. The Burris Basin is critical to the District’s groundwater recharge operations. The existing pump station had reached the end of its useful life span. The pumps and motors had originally been constructed on a 30-degree incline making maintenance or replacement extremely difficult. Therefore, the District decided to demolish the existing pump station and replace it with pumps installed vertically within a wet well. The overall project was completed in two phases.
Phase I consisted of constructing a 45-foot tall earthen cofferdam to encircle the new pump station site by moving approximately 130,000 cubic yards (cy) of dirt within Burris Basin over 3 months. The cofferdam constructed in Phase 1 allowed for the following: the new pump station to be constructed while minimizing disruption to the aquatic habitat in the basin; nesting birds to use the bird island during nesting season; and OCWD to continue to capture and pump 400 acre-feet of stormwater flows from the Santa Ana River per day to the Santiago Basins for recharge into Orange County’s groundwater aquifer.
Phase II consisted of the construction of a new 10,000 SF stormwater pump station that uses four conventional vertical turbine pumps installed in a circular wet well. The pump station also consists of new mechanical, HVAC, electrical, instrumentation and control systems. An intake pipe was installed on the slope of the embankment, connecting the new pumps to the intake invert. Site improvements included AC paving, concrete pavement, concrete boat ramp, gravel road, concrete pads, cub/gutters, fencing, and gates. Coordination was required with the Army Corps of Engineers, Department of Fish and Wildlife, California Region Water Quality Control Board, Orange County Department of Public Works, and Orange County Flood Control.