Water Environment Federation (WEF)

Asset Management Studies with Limited Budgets


With more than 1,500 pieces of aging equipment at its four wastewater treatment plants and two outfall pipelines, the South Orange County Wastewater Authority retained Tetra Tech, Inc., to develop an Assessment Management Plan. The objective of the assignment was to ensure theaccuracy of long-term financial forecasting for the timely repair and/or replacement of assets constructed and/or installed more than more than 25 years ago. With a severely restricted budget,
project challenges included researching and developing detailed equipment lists; assigning cost estimates to replacement value for all assets; and, developing equipment life estimates and annual replacement cost projections.

The South Orange County Wastewater Authority (SOCWA) is a Joint Powers Authority representing three cities and seven water/wastewater special districts. The service area extends from Irvine to San Clemente in Orange County, California. The agency provides service to a population in excess of 500,000 within a 220 square mile service area. SOCWA operates four wastewater treatment plants, one land outfall sewer and two ocean outfall sewers. The wastewater treatment facilities are described in Table 1.

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