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. rearing ponds to produce 300,000 fish of each species (150,000 intensive culture and 150,000 extensive culture) using warm (64Cf') well water. The objective in the design for the broodstock and refugia portion of the facility is to simulate natural fish habitat in an environment with very low loading density. This is used as a means of reducing hatchery-induced stress and to help maintain genetic integrity. Broodstock and refugia facilities are designed to house a total of 5,100 adult fish, whose numbers are divided between the four endangered species. The broodstock ponds also incorporate features to function as refugia for these fish. A broodstock building has been incorporated into the design to accommodate tagging, spawning and recovery of broodstock. A state-of-the-art research facility has been incorporated into the design to satisfy the special requirements of tbe Recovery Program. Primary research needs focus on genetics, fish health, and population/environment interaction. Research laboratories devoted to genetics, physiology and patbology are housed together in a building along with support facilities such as a library, photography laboratory, and conference and computer rooms. An outdoor research space is supplied with a variety of water types and drainage facilities to support a variety of rearing tank configurations for conducting fish behavioral experiments. . A hatchery building is located central to the facility. Incubation and culture to first feeding for all stocks will take place at the hatchery building. The hatchery building will also house all intensive culture facilities for up to one-half of total augmentation stocks. Sixty augmentation ponds are provided for extensive culture. The facility includes a visitor center containing aquaria and informational exhibits to enhance the public awareness of the facility operation, Recovery Program efforts, and provide general background information on the endangered fish. Walkways are also provided to allow public access to certain areas of the facility. Quarantine facilities are strategically placed to receive all incoming live fish and/or eggs. All biological products will be screened for diseases and quarantined prior to entrance to the remainder of the facility. Access to all facilities is secured behind locking gates. . Water conditioning functions have been designed for all three water types. Heating or cooling requirements will be a function of the temperature of the incoming supply and the specific life stage needs of the various fish stocks. In addition, the design incorporates water treatment facilities for degassing, aeration, screening and disinfection. Wastewater from all research, brood and culture operations will be adequately treated to prevent escapement and to remove solids prior to discharge. Research facility effluent water will be directed to a pretreatment pond prior to screening to allow for special treatment, such as removal of pathogens, prior to discharge to settlement ponds. All quarantine water will be disinfected prior to discharge to the effluent disposal facility. A maintenance and storage building is located near the hatchery and research complex. A warehouse space is provided to store equipment and supplies. Emergency equipment is 13