Transcript Document

Trout Production
Effluent Challenges
Tom Wiggins
Vermont 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 within
existing standards, DEC was worried
about mass loading
* Tertiary treatment was required and three year
study on the impact of the discharge
Solids
Not considered a problem
pH
•Hatcheries typically have
little impact on pH
Bacteriological
* Fecal coliform & streptococci groups
* Aeromonas & total bacteria
* Fish pathogens
Chemicals
* Few chemicals available to use
* The available chemicals are:
- Generally considered safe
or
- FDA and EPA approved
or
- Used Under Permit (INAD)
I am sure reasonable changes
can be made to improve
hatcheries effluents if it is
approached in a manner of
Mutual Understanding
and Cooperation