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siting studies, conceptual and final design of facilities located in areas constrained by existing improvements, high volume traffic, or environmentally sensitive habitat. Village Park Recycled Water Project We have completed Olivenhain Municipal Water District numerous designs requiring the continued operation of existing pumping systems or joint -use facilities during construction with special requirements for temporary pumping and highlining of existing facilities, and commissioning of new facilities. Example projects include: • Vallecitos Water District Lift Station No. 1 Improvements (2,500 gpm sewer lift station) • Oceanside Boulevard Lift Station (2,000 gpm sewer lift station) • Lake Arrowhead Community Services District Pump Station 12 Replacement (2,400 gpm sewer lift station) • City of Oceanside 511 Pump Station (3,125 gpm potable water pump station) • Eastern Municipal Water District Mumeta Road Booster Pump Station (10,400 gpm potable water pump station) • Olivenhain Municipal Water District Village Park Recycled Water Project [1,200 gpm (prefabricated) potable water pump station] Water Storage Tanks Ardurra has extensive experience on a variety of reservoir and storage facility planning and design projects, including several reservoir rehabilitation projects. Our experience Wulff Tank Replacement Project encompasses both Vallecitos Water District small and large facilities, from prestressed concrete to steel, ranging from 0.10 MG to 53.0 MG; including the world's largest prestressed concrete reservoir — Vallecitos Water District's 40.0 MG Twin Oaks Reservoir No. 2. Example projects include: Vallecitos Water District Wulff Tank Replacement (0.35 MG steel tank) California Water Service Company Stations 119 & 120 Tanks (two 0.4 MG concrete tanks) City of San Diego Miramar Clearwells (two 29.5 MG partially buried/rectangular/cast-in-place clearwell basins with hopper bottoms) • City of Mountain View Graham Reservoir (8.0 MG buried, circular, prestressed concrete tank) • Eastern Municipal Water District Post Road (Ellis) Tank Replacement (3.5 MG welded steel tank) Wells Our well experience includes production and monitoring wells constructed in various aquifer types including alluvium, fractured rock, and others. Some example projects include: • City of Menlo Park Water Supply Emergency Backup Well Facility at City Corporation Yard (200-hp deep well submersible pump 5,000 gallon hydropneumatic tank) • Elsinore Valley Municipal Water District Flagler Wells Project (conversion of two agricultural wells to potable service installation of vertical turbine well pumps) • Elsinore Valley Municipal Water District Palomar Well Project (2,520 LF 16-inch PVC well flushing pipeline, 20-inch 1,000 deep new potable well designed at 1,200 gpm) • Rancho California Water District Equipping Well 240 & Well 205 Replacement (demolition of existing Well 205; site plan and equipping for new Well 2401,800 gpm vertical turbine wellhead) WaterMastewater Treatment Plants Ardurra has worked on several process modifications to both water and wastewater treatment plants of sizes ranging from small, medium, and large throughout California. These improvements have helped our clients mitigate flow violations, comply with regulatory requirements, and upgrade treatment plant processes to optimize plant operations. Example projects include: • City of San Diego Alvarado Algae Plugging of Ozone Sample Lines Process Assistance (120 MGD plant) • Fallbrook Public Utility District Santa Margarita Conjunctive Use Project (new 8 MGD RO plant) • Leucadia Wastewater District Gafner Advanced Water Treatment Plant Rehabilitation (1.0 MGD plant) • San Jose -Santa Clara Regional Wastewater Facility Emergency Diesel Generator Package 2A (110 MGD plant design -build) • Lake Arrowhead Community Services District Bernina Water Treatment Plant Modifications (process upgrades, 4 MGD) Stormwater Facilities Ardurra has designed numerous storm drain and stormwater facilities including collection systems, and complex pump stations and rehabilitation projects. Some examples include: • City of San Diego Mission Hills NE Storm Drain Project (replacement of 9 existing corrugated metal pipe storm drain facilities) • City of San Diego San Carlos Storm Drain Project (6,500 feet of 18- to 54-inch storm drains to replace deteriorated facilities) • City of Sunnyvale Storm Pump Station No.1 (two engine -driven pumps, 21,000 gpm each; one electric pump, 8,000 gpm) City of Santa Ana Water Resources Division f 3 1 /�ARDURRA REP 22-002 1 May 24, 2022 L 1