322 CMR 15.09
Monitoring
All Class 4 aquaculture operations in which culture organisms are fed are required to monitor
pre-operation and post-operation environmental conditions at the site, using the services of an
individual or firm qualified to perform this work. Conditions to be monitored and frequency
shall be as specified in the NPDES Permit, including:
(a) Dissolved Oxygen Profiles. Operation of the facility must not degrade the classification
of receiving waters by lowering dissolved oxygen saturation to less than 85% of ambient
conditions;
(b) Video Transects of Sea Floor Beneath Pens to Document Potential Degradation of
Benthic Habitat. Signs of degradation shall include changes in sediment composition, azoic
or anoxic conditions, outgassing, and growth of bacterial mats;
(c) Infauna. Abundance and relative diversity of benthic organisms;
(d) If habitat degradation is determined through monitoring, a corrective plan will be
prepared in consultation with the permit holder and EPA. Corrective measures may include
improved best management practices or temporary removal of gear.