Ridgecrest Reservoir:

• Owner: Walnut Valley Water District
• Cost: $1,760,000

In accordance with the adopted water master plan, Walnut Valley Water District decided to construct a new 2.0 MG welded steel reservoir to provide operational and emergency storage for Pressure Zone 1050. The site is located in an affluent residential area in the City of Diamond Bar. The reservoir and piping are located such that future construction of a small steel tank is feasible if required.

Perliter & Ingalsbe performed preliminary planning, detail design, and full construction management services.

Major Components and Special Features:

• Aboveground 2.0 MG welded steel tank
• Aluminum dome roof with no interior columns
• Tank appurtenances, including stairway, roof hatches, gravity vent, platforms, manholes, and outlets
• Cathodic protection system
• Reservoir access road and facility perimeter road
• 16" inlet and outlet pipes and valves
• 12" reservoir overflow and 8" drain

• Electrical power supply, controls and instrumentation
• Monument Wall, entrance gate and retaining walls
• Security features, including intrusion alarms, security fencing, etc.
• Extensive landscaping and irrigation system
• Proximity to affluent residential area
• Aesthetic requirements of the City of Diamond Bar and community HOA