Department of National Defence, CFB Rivers, Manitoba
NOTRA conducted a Geophysical Survey and UXO Clearance and the former CFB Rivers, Manitoba.  The overall project goal was to extend the clearance operations conducted in 2007 and remove the risk of EO/UXO encounters for the general public while providing defendable documentation detailing the measures taken to remove all EO/UXO to a depth of no less than half (0.5) meter.  

NOTRA provided personnel, equipment/materials, expertise and consulting services to carry out a UXO Survey and Clearance which included: mobilization, soft prove out (SPO), a 100% coverage geophysical survey of approximately 21 ha piece of property (using a 0.5m Depth of Exploration), geophysical data analysis, anomaly reacquisition, subsurface clearance of potential MEC, hard prove out (HPO) and removal of MD and N-MD.

With the overall project goal in mind, NOTRA mobilized equipment and personnel to the site to undertake investigation and clearance operations. NOTRA combined the use of hand held detectors with EM61 survey techniques to complete the project on schedule, budget and to the requisite standard of quality required by the Department of National Defence (DND) and Defence Construction Canada (DCC).

The NOTRA team selected an approach based on our experience and understanding of the former CFB Rivers, UXO survey and clearance requirements. The company designed an approach focused on quality and transparency that provides DCC and DND with defendable processes and procedures for demonstrating that data quality objectives (DQO) were met.

The geophysical survey and UXO clearance conducted on the site has allowed DCC/DND to more clearly define the extent of the property which was impacted by munitions debris.  While the highest concentration of munitions debris was located in the center of the surveyed area, numerous munitions debris items were recovered right up to the fence line (property limit) at the north end boundary of the surveyed area.  No live EO/UXO were ever recovered during the 2008 or 2007 geophysical survey and UXO clearance projects, however, approximately 90 MD items were removed from the site.