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