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vv? (west Coast Storm,Inc. Storm IVater arrd Enrironme»tal Solullons County of Orange, OC Public Works Automatic Retractable Screen Excluders, Connector Pipe Screen Full Capture Trash Systems, and Catch Basin Inserts RFP# 080-591792 West Coast Storm Screen Automatic Retractable Screen Equipment Design and Specification Report (Information provided to the City as requested in the RFQ documents under Attachment A. Scope of Work) 12) All ARS devices have a locking mechanism that in the closed position prevents the brushes of street sweeping equipment from opening the screen when sweeping in front of the screen. The mechanism is a gear designed to automatically release and allow the screen to fully open with the flow of water per Operation Section below. 13) The gear locking mechanism for automatically opening the screen is opened by the force of water acting on the inner screen adjusted to open at specified water flow height. Manual release of the screen: push a screwdriver into any lower main screen hole and push the inner screen back to release main screen. 14) The main screen extension is adjusted to specified gap from bottom of catch basin curb opening. The main screen extension is used to insure a uniform %z inch gap from the bottom of the screen to the bottom of the catch basin curb opening across uneven surfaces. 15) The ARS device must open as required when the screen is partially blocked with trash. Note: As an approved County device, the West Coast Storm Screen passed testing by the County of Los Angeles which included hydro-testing and trash and debris blocking requirements. Fabrication The ARS device meets the following requirements: 1) The ARS device is fabricated with a built in overflow or top gap specified. 2) The main screen has 0.75 inch round openings with a 50% open pattern. The main screen extension has 0.75 inch round openings as well. 3) Inner screen extension is adjusted for required water height opening (unlocking) per specifications. 4) A standard 0.50 inch gap between the main screen and the ARS device ends is built in. 5) Parts are CNC punched to -f-/- 0.005 tolerance. 6) All parts are released for fabrication with applicable shop drawings and CNC programs. 7) Completed ARS devices are marked with location ID. 8) Completed ARS devices include all hardware and extensions. 9) ARS devices are shipped completely assembled. Page 4 of 45 654 South Lincoln Avenue, San Bernardino, CA 92408 - Telephone 909.890.5700 Facsimile 909.890.5988 California General A/HAZ Contractor License Number: 888152 25C-25