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<br />001898 <br /> <br />e <br /> <br />e <br /> <br />Standardization of production units allows flexibilityin production quotas for each of the <br />four species. This is accounted for in the hatchery design to permit changes in <br />production of each species over time as recovery milestones are met. Initial CWCB <br />production quotas were used as a basic criteria for total biomass and a target for design <br />which can be related to maximum, average and minimum water flows and various <br />configurations of rearing systems. The general overall size and generic layout of the <br />facilitywas been designed to meet these initialproduction targets. <br /> <br />A state-of-the-art hatchery facility was developed from the conceptual modeling effort, <br />incorporating the latest technologies while considering the special needs for propagating <br />rare and endangered species. These facilities contain one-half of all brood and refugia <br />facilities needed for the four species of concern, with plans for the remaining half to be <br />held at various State and Federal facilities. Alayout of the facility configured for a warm <br />well water source and 300,000 fish production level is illustrated on Sheet 1. The method <br />of rearing is split. As directed by the TAC, one-half of the production needs for each <br />species is to be cultured via intensive culture, with the other half being cultured via <br />extensive culture. <br /> <br />A nutritional strategy was developed for extensive culture of augmentation stocks and <br />refugia which is designed to stimulate a natural feeding response as a means of <br />enhancing survival and ultimately genetic diversity. Accommodating this strategy requires <br />natural feed production facilities, which have been incorporated in the design. <br /> <br />Flow requirements for the intensive culture, using various water types and production <br />scenarios have been calculated by computer models based on oxygen consumption data <br />for Colorado squawfish. Tables 6 and 7 identify the maximum requirements for :flow, start <br />tanks and rearing ponds to produce 300,000 of each species using warm well water. <br /> <br />The objective in the design for the broodstock and refugia portion of the facility is to <br />simulate natural fish habitat in an environment with very low loading density. This is used <br />as a means of reducing hatchery-induced stress and to help maintain genetic integrity. <br />Holding facilities are designed to house 5,100 adults of all species. The broodstock <br />ponds also incorporate features to function as refugia for these fish. A brood building has <br />been incorporated into the design to accommodate tagging, spawning and recovery of <br />broodstock. <br /> <br />Ahighly integrated state-of-the-art research facility has been incorporated into the design <br />to satisfy the special requirements of the Recovery Program. Primary research needs <br />focus on genetics, fish health, and population/environment interaction. Research <br />laboratories devoted to genetics, physiology and pathology are housed together in a <br />building along with support facilities such as a library, photography laboratory, conference <br />and computer rooms. An outdoor research space is supplied with a variety of water <br />types and drainage facilities to support a variety of rearing tank configurations for <br /> <br />CWCB1.ES <br /> <br />8 <br />