Map Key—Yellow: Supplemental Site Inspection Study Area.—Blue:Laydown Area.—Purple: Safety Arc: The need for temporary evacuation during this effort is considered unlikely. However, this arc represents the maximum area in which temporary evacuation could be required under the most extreme circumstance considered possible.
A Supplemental Site Inspection continues on two former Fort Irwin range areas, also known as Munitions Response Sites on the grounds of the future, new hospital. The work is being conducted under the U.S. Army Military Munitions Response Program. PIKA Pirnie Joint Venture, LLC is the contractor executing the Supplemental Site Inspection work is PIKA Pirnie Joint Venture, LLC.
The Supplemental Site Inspection includes surveying the site for the potential presence of unexploded ordnance/munitions of explosive concern and conducting an intrusive investigation to search for munitions of explosive concern and munitions constituents that could pose a potential hazard to human health or the environment.
Supplemental Site Inspection goals
The primary goals of the Supplemental Site Inspection are: to gather sufficient information to determine if an environmental regulated release has occurred at the location of the new hospital site; if a munitions of explosive concern/munitions constituents hazard is identified, to remove it, and; dispose of any soil affected by munitions of explosive concern and munitions constituents.
Supplemental Site Inspection Activities
- Site Preparation: Equipment mobilization, fence installation, site-wide survey, surface sweep, vegetation removal, delineation of areas for initial excavation.
- Initial Excavation: Armored heavy equipment will remove surface debris that may interfere with subsequent steps of the field effort, and transport it to the Laydown Area north of North Loop road.
- Digital Geophysical Mapping: The geophysical mapping effort will identify subsurface anomalies that may require intrusive investigation (digging) to determine whether they are unexploded ordnance/munitions of explosive concern items.
- Intrusive Investigation: Excavation to identify and address potential subsurface unexploded ordnance/munitions of explosive concern hazards.
- Sifting and Sorting: Soil and debris will be processed in the Laydown Area.
- Unexploded ordnance/munitions of explosive concern Disposal: In the event that a munitions item is encountered that requires detonation, a controlled detonation will occur where the item is located. Sound from the controlled detonation may be heard in the area.
