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<br />001863 <br /> <br />e <br /> <br />e <br /> <br />The preparation of a conceptual level design for an endangered fishes hatchery facility <br />was the final major study task. The operational requirements for this facility are complex <br />in relation to traditional fish hatcheries due to the unique features of working with rare and <br />endangered fish stocks. An overriding concern in developing a hatchery design is the <br />high degree of health risk associated with artificial propagation of endangered stocks at <br />critically low population levels. This problem is compounded because the facility will be <br />receiving and releasing fish from multiple sourCes and watersheds. These conditions <br />necessitate that all practical measures are taken to protect fish health and guard against <br />disease outbreaks and transfer among various populations. Potential disease threats to <br />each of the four species have been reviewed so that features which will moderate the <br />threats to fish health can be incorporated in the facility design. Other design <br />characteristics which must be emphasized due to the unique character of endangered fish <br />species culture are methods which will minimize or eliminate predation, escapement and <br />theft or vandalism. Genetic. segr~gation as well as the quality and quantity of water <br />available have been given high priority with a resulting marked influence on design. <br /> <br />As stated previously, the purposes of this facility are to meet the CWCS endangered fish <br />recovery goals of augmentation of native populations, broodstock and refugia holding and <br />to provide facilities for research. The original study scope contemplated preparation of <br />a conceptual level hatchery design for each of the three preferred sites selected during <br />the site screening process. However, because the three preferred sites were all located <br />within the same region of the State, the CWCS staff with agreement of the T AC, decided <br />that it would be more beneficial to prepare a conceptual level hatchery design for each <br />of the three types of water supply sources: warm well water, cold well water and surface <br />water. With this type of approach, the feasibility study will provide the CWCS and the <br />Recovery Program with hatchery design and cost guidelines, regardless of where the <br />hatchery is eventually located. <br /> <br />Given this revised direction, the design criteria, conceptual hatchery design and cost <br />estimates were gene~ or a facility with three different water supplies. Facilities were ;c <br />evaluated based up ;':1) arm well water at 690F; 2) cold well water at ST'F; and 3) <br />surface water with :1n~re fluctuations. The three different production <br />quantities specified by th~cope of work were considered for each of the water <br />supply types. These include a total annual production for augmentation and research for <br />each of the four species of 150,000, 300,000, or 600,000 fish. A total of nine scenarios <br />were analyzed, including estimation of construction and operation and maintenance costs. <br />The design effort was concentrated on the 300,000 fish production scenario, with some <br />extrapolation of design and cost information to the 150,000 and 600,000 quota scenarios. <br />General information concerning the hatchery design is described in the following <br />paragraphs. <br /> <br />Standardization of the design of the production units allows flexibility in production quotas <br />for each of the four species. This flexibility would also permit the facility to be used for <br />other purposes should the need arise. Initial CWCS production quotas were used as a <br /> <br />8, <br /> <br />.n. <br /> <br />, i.. <br /> <br />..'1!'2~;,r'. <br /> <br />,-J...... <br /> <br />_ ~:lB:i..'":~:. -~ ~ <br />