25B - AGMT FOR ENGINEERING SERVICES

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DUDEK Features of the design include a potable water makeup vault and pipeline, a stormwater detention basin, and protection of adjacent sensitive habitat. Grossmont Tank Recoating and Repairs, Padre Dam Municipal Water District, El Cajon, California. Served as project manager for the design of various interior repairs and recoating for the District's 1.5-MG steel standpipe type reservoir. The District's reservoir has a shell height of 90 feet and is topped by a 1.1-MG upper tank owned and operated by an adjoining water agency. Retrofits included replacement of a suspended catwalk structure and fall protection enhancements, replacement of a roof access hatch, refurbishment of tank vents, replacement of electrical equipment, the addition of ports for mixing, and a new cathodic protection rectifier. Dudek also designed connections to existing 18-inch diameter welded steel yard piping for connection of a temporary pressure reducing station to supply the District's customers with higher pressure water from the upper Helix Water District tank. Fanita Terrace Recycled Water Reservoir Structural Analysis, Padre Dam Municipal Water District, Santee, California. Project manager for a seismic analysis and condition assessment of an existing 1.5-MG welded steel reservoir. The assessment included cost estimates and life cycle cost calculations for four rehabilitation and replacement alternatives, including repair or replacement of the existing roof due to corrosion of the rafters. E Reservoir Replacement and Pump Station, Vista Irrigation District, San Diego County, California. Lead engineer for the preliminary and final design of replacement of an existing 1.5-MG concrete reservoir constructed in 1929 with a new 2.9-MG cast -in -place concrete reservoir customized to maximize storage at the site. The project also involved design of a new 3,000-gpm, 230 feet TDH pump station to serve as a backup supply to the higher zone. Geotechnical constraints at the site included very hard underlying rock and a cut/fill transition beneath the existing reservoir. To mitigate this, the pump station design utilized vertical multi -stage, pad -mounted pumps rather than traditional vertical turbine pumps in cans and the reservoir design included removal of existing fill and backfill with controlled low strength material beneath the new structure. Other improvements included a stormwater detention basin and on and off -site storm drain improvements. Boulder Mountain Reservoir 3 Rehabilitation, City of Poway, California. Project manager for the design of improvements to an existing 1 MG steel reservoir. Upgrade work included drainage and site improvements, interior and exterior tank coatings, new inlet and outlet piping, replacement of miscellaneous tank appurtenances and safety features, cathodic protection improvements, and a new CMU block electrical/SCADA building. The design included piping and site provisions for a future adjacent reservoir. Design -Build Services for Gibbel Road Recycled Water Reservoir, Eastern Municipal Water District, Riverside County, California. Project engineer for the planning and preparation of the design -build bid package for a new 4-million-gallon welded steel tank and 4,000 feet of 30-inch inlet/outlet pipeline for the district's recycled water system. Chambers Recycled Water Tank Site Assessment, Eastern Municipal Water District, Riverside County, California. Project engineer for the planning and siting of a new welded steel tank for the district's recycled water system. Evaluated site adequacy, potential environmental requirements and constraints, geotechnical issues, and pipeline alignment alternatives; determined drainage and overflow rates; and provided preliminary site and grading plans for 4-million-gallon, 7-million-gallon, and 10-million-gallon options. DUDEK Page 2of2 25B-46