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Published byClarence Hardy Modified over 9 years ago
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Trout Production Effluent Challenges Tom Wiggins Vermont Department of Fish & Wildlife
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Obtaining a Discharge Permit
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Why did problems occur?? 1Regulators did not understand fish culture or hatchery effluents. 2. Regulators were inexperienced. 3.Professional values not water quality standards impacted the process.
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Specific Effluent Challenges ( Current & Future) Phosphorus * This was the principal concern of VT DEC (Department of Environmental Conservation) * The proposed hatchery was well within existing standards, DEC was worried about mass loading * Tertiary treatment was required and three year study on the impact of the discharge
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Solids Not considered a problem
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pH Hatcheries typically have little impact on pH
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Bacteriological * Fecal coliform & streptococci groups * Fish pathogens * Aeromonas & total bacteria
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Chemicals * Few chemicals available to use * The available chemicals are: - Generally considered safe - FDA and EPA approved or - Used Under Permit (INAD) or
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I am sure reasonable changes can be made to improve hatcheries effluents if it is approached in a manner of Mutual Understanding and Cooperation
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