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<br />Ou1887 <br /> <br />e <br /> <br />e <br /> <br />HATCHERY DESIGN <br /> <br />The preparation of a conceptual level design for an endangered fishes hatchery was the <br />final major study task. The operational requirements for this facility are complex in relation <br />to traditional fish hatcheries due to unique featur s of rare and endangered fish stocks. <br />A major criteria for the hatchery design an epratlon . s the quality and quantity of water z::.. <br />available for fish rearing. <br /> <br /> <br />An overriding concern in developing a hatchery design is the high degree of health risk <br />associated with artificial propagation of endangered stocks which are at critically low <br />population levels. This problem is compounded because the facility will be receiving and <br />releasing fish from multiple watersheds. These conditions necessitate that all practical ' <br />measures are taken to protect fish health and guard against disease outbreaks and <br />transfer among various populations. Potential disease threats to each of the four species <br />have been reviewed so that features which will moderate the threats to fish health can be <br />incorporated in the facility design. Other design characteristics which must be <br />emphasized due to the unique character of endangered fish species culture are methods <br />which will minimize or eliminate predation, escapement and theft or vandalism. Genetic <br />segregation as well as the quality and quantity of water available have been given high <br />priority with a resulting influence on design. <br /> <br />The T AC defined the functions which are required for the facility to meet the endangered <br />fish recovery goals determiFled by the C'}JCB. These functions are augmentation of native <br />populations, refugia and broodstock holding and facilities for research. The original study <br />scope contemplated preparation of a conceptual level hatchery design for each of the - <br />three preferred sites selected during the site screening process. However, becaus~ <br />three preferred sites were all located within the same region of the State, the CWCS~ <br />agreement of the T AC, decided that it would be more beneficial to prepare a conceptual <br />level hatchery design for each of the three types of water supply sources: warm well <br />water, cold well water and surface water. With this type of approach, the feasibility study <br />will provide the ~ with hatchery design and cost guidelines, regardless of where the <br />hatchery site is eve~a~~~d~ ~ ~ ~ <br /> <br />Given this direction, the design criteria, conceptual hatchery design and cost estimates <br />were generated for a facility with three different water supplies. Facilities were evaluated t <br />based upo~arm well water at 690 Fehfeebeit; 2) cold well water at 5T' rl1hr8fth~; <br />and 3) surtaee water with seasonal temperature fluctuations. The three diff~rent j <br />production quantities specified by the CWCS scope of work were considered for each of '>({..JP <br />the water supply types. These include. a total annual production for augmentation and ~.... <br />research for each of the four species of 150,000, 300,000, or 600,000 fish. A total of nine ~~ <br />scenarios were analyzed, including estimation of construction and O&M costs. General yJ' ; <br />information about the hatchery design is described in the following paragraphs. . jJ' '/ <br /> <br />I) ___-:-.J <br />2..) --.. H-\.,^~ .~~~ <br />CWCB1.ES '5) 7 tt. o;f- ~.~ CAU.1..~ ~ <br />Q.... I ~-"'.. l f"t ~ ~ ~ <br />~ "k&+k.v~",-- <br />~o~ ~.tp..~~ ~ <br />~~~~~~ <br />