Sachs Harbour Disposal at Sea Follow up Study

Regions: Inuvialuit Settlement Region

Tags: physical sciences, contaminants, waste disposal, seabed

Principal Investigator: Dahl, Mark (2)
Licence Number: 15088
Organization: Environment Canada
Licenced Year(s): 2013 2012
Issued: Jun 15, 2012
Project Team: Ron Bujold (Technical support , Envirionment Canada)

Objective(s): The study is designed to assess if the assumptions made during the disposal at sea permitting process were accurate and if the permit conditions are effective.

Project Description: The study is designed to assess if the assumptions made during the disposal at sea permitting process were accurate and if the permit conditions are effective.

Lotek sonic tags will be firmly attached to wastes in 5 different piles dispersed throughout the disposal site. After placement each tag will be photographed, numbered, its unique signal noted and its position recorded using a GPS (Garmin GPSMAP 76 CS). As the ice melts it will begin to drift and eventually the material will fall into the sea. When sufficient open water is available a boat equipped with two LHP_1 hydrophones and a Lotek MAP 600 RT P2 receiver will be used to locate the tags. Once located tags will be identified using unique signal and its position will be recorded using the above GPS unit; water depth will be measured using a PDS-2 hand held depth sounder. Video images of the sea floor around the tag location will be collected using an ROV or a drop camera to ascertain waste dispersal pattern and assess state of material decomposition.

As stated above, the purpose of this program is to determine where the muskox offal ends up on the sea floor, to observe the level of decomposition of the muskox offal, and to observe the condition of the surrounding sea bed in these areas. Further investigation will be dependent upon results.

The study report will be provided to the Sachs Harbour HTC and to the board members of the Muskox Company (6355 NWT Ltd.)

The fieldwork for this study will be conducted from June 15, 2012 to December 31, 2012.