2004-112 - Laserfiche WebLink

Home Browse Search

Provide a secondary bar screen in an open area (animal removal chamber) before the main vortex feed channel to prevent animals such as alligators and turtles from entering the vortex units . Design this animal recovery system so that it is possible to remove captured animals without harming the animal or the rescuer. Design the vortex system to remove one hundred percent of particles 2 , 400 microns and larger. It shall also be capable of removing particles down to 500 microns in size . Design the facility at the Main Canal to minimize attraction of birds . Measures to minimize the bird attraction may include pavilion-type or prefabricated buildings or the ability to easily construct an appropriate structure in the future . Additionally, the pollution control systems shall include all pertinent features and facilities normally found at similar municipal installations (e . g . wastewater treatment plant headworks ) . Such features include , but are not limited to , high- pressure washdown systems using non -potable water (canal water) , potable water supply, prefabricated concrete operations/equipment building at the North Relief Canal and at the South Relief Canal , etc . The influent flow rate shall be measured (totalized and instantaneous flow measurements ) and recorded . Similarly, the flows into each vortex unit shall be measured (totalized and instantaneous flow measurements ) and recorded . Systems shall be designed for automatic and manual operation . Design a solids removal system that automatically and continuously removes the debris captured by the climber screens and one that also removes and dewaters the settled , suspended , and floating material captured by the vortex units . The treatment system shall include equipment to weigh the material collected at each pollution control facility. At the Main Relief Canal , an architect shall design and permit an Operations Building that shall contain three offices , secretarial space , one or more bathrooms as required by code , and equipment storage and laboratory / work area space . The COUNTY will provide the architect with a draft floor plan of the building . 2 . Construction Drawings - (See "Attachment 2" for Construction Drawing requirements . ) 3 . Review Technical Specifications prepared by the COUNTY — The COUNTY will prepare the technical specifications listed in Attachment 3 . Review these technical specifications with respect to this Work Order and provide written comments . 4 . Other Required Technical Specifications — Prepare all other Technical Specifications necessary for the Contractor to properly bid and construct the project . In general , the Technical Specifications shall include pertinent F:\Public Works\KeithM\Stormwater Projects\East IRC\Contracts\Consultant Contract with Carter & Associates\Work Order No. 5 - Final Design of Vortex System\Work Order #5 - Rev. May 3, 2004.doc 6