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Morimoto <br /> 04/30/91 <br /> -2- <br /> Cal-Waste DEIR <br /> The proposed project calls for a 350% increase in the <br /> acceptance and processing of organic matter for the eventual use as <br /> soil amendments and animal feed. Because the organic matter will <br /> consist of large amount of cannery and winery waste, and because <br /> the waste must be maintained with adequate (30% ) moisture, the <br /> ability for this site to produce and harbor vectors of public <br /> health importance is conceivable but not addressed in the draft. <br /> Storage of wet vegetable matter for periods of up to two weeks will <br /> most likely attract files and rats . <br /> Fly species of the genus Drosophila, often referred to as <br /> vinegar flies , prefer. decaying or fermenting fruit or acid <br /> vegetables as a food source and breeding site. Adult flies are <br /> considered a serious economic problem around plant sites and can <br /> become a public health problem as they migrate off site. The life <br /> cycle of this fly can be completed in as little as six days and <br /> seldom takes more than 2 weeks . Other flies that possibly would be <br /> involved are from the genus Phaenicia, Tubifera, and Musca. <br /> The proposed composting plan calls for aeration every two <br /> weeks . This plan may not be adequate to prevent the emergence of <br /> adult flies. <br /> Also of importance is the lack of a plan to control rats , <br /> primarily the brown rat, Rattus norvegicus . This rat specie is <br /> very adaptable to areas with high human activity, and prefers areas <br /> close to adequate food sources, moisture, and harborage. The site <br /> has sewers and storm drains that provide all three necessities for <br /> survival . The DEIR does not indicate any mitigation measures to <br /> prevent rat infestations. <br />