As part of the 100N Nuclear reactor clean-up at Hanford Gravity was tasked with reducing risk to Salmon during construction activities.  Through a combination of turbidity curtains, fish exclusion nets and a innovative acoustic deterrent system Gravity was able to successfully maintain an active and passive exclusion area during construction with no observed loss or negative behavior changes in fish near the site.  Gravity was listed with WCH as a technology leader because of the acoustic fish deterrent system and awarded by the DOE for its efforts.  See attached brochure that summarizes the system Gravity developed.

The acoustic system is an important option that Gravity hopes to use on future projects – particularly river systems where turbidity and fish net curtains may not be feasible.

Hanford Tech Accomplishments – click to see article