Area B
The Western Range Area B MRS is located in the Western Range Area and includes portions of several historic range fans. It is located primarily in the Pat Mayse Wildlife Management Area (WMA) and is accessed by the public for recreational activities such as hiking and hunting. It is designated as a noncontiguous area located in the WMA and along the northern and eastern sides of the western portion of Pat Mayse Lake. Its boundaries were based on the type of risk identified from the Remedial Investigation. No munitions or explosives of concern (MEC, explosive hazards) were identified in these areas during the Remedial Investigation or any other previous investigations. Further, only a low density of munitions debris (MD) was identified in these areas. This appears to indicate that these areas were on the edges of the main target/impact area and present a very low risk of exposure to explosive hazards.
The selected remedy for Western Range Area B does not include the search and removal of explosive hazards because of the low anticipated risk but does consist of the placement of signage and other educational awareness land use controls utilizing the Army’s 3Rs educational program. A long-term monitoring program will be performed to maintain the signs and check for any changed site conditions, such as erosion of streambeds or exposure of the lakebed due to drought.
Hunters and other recreational users leaving the frequently-trafficked areas and entering into the hunting units in Pat Mayse WMA should familiarize themselves with the 3Rs of ordnance safety before visiting the WMA.
Area C
The Western Range Area C MRS is located in the north-central and south-central portions of the Western Range Area. It is located wholly within the Pat Mayse WMA and is accessed by the public for recreational activities such as hiking and hunting. No MEC was identified during the Remedial Investigation or during previous investigations; however, there are areas with medium and high densities of munitions debris (MD) that are consistent with potential target/impact areas. As such, it was expected that MEC could be present.
Clean-up of the area included MEC from the surface in recreational areas expected to experience more frequent human traffic use (i.e., trails, dirt roads, picnic areas, camp grounds, shorelines) including a safety buffer of 30 feet surrounding those areas. It is expected that MEC may potentially remain in the natural areas between the trails, roads, camp grounds, etc.
Land Use Controls in the form of the Army’s 3Rs (Recognize, Retreat, Report) signage and public education will also be implemented. Long-term monitoring will be performed to maintain the signs and check for any changed site conditions, such as erosion of streambeds or exposure of the lakebed due to drought.
Hunters and other recreational users leaving the frequently-trafficked areas and entering into the hunting units in Pat Mayse WMA should familiarize themselves with the 3Rs of ordnance safety before visiting the WMA.
Area D
The Western Range Area D MRS is located in what is believed to be the central impact area for the western ranges. It is wholly located within the Pat Mayse WMA and is accessed by the public for recreational activities such as hiking and hunting. The results of the Remedial Investigation demonstrated that MEC was located on, or just below, the ground surface along with several areas that had high or medium densities of munitions debris.
The removal action proposed in the Proposed Plan and formalized in the Decision Document included the search for, and removal of, MEC from the surface and to a depth of 12 inches in areas expected to experience more frequent human traffic use (i.e., trails, dirt roads, picnic areas, camp grounds, and shorelines) including a safety buffer of 30 feet surrounding those areas. It is expected that MEC may potentially remain in the natural areas between the trails, roads, camp grounds, etc.
Land Use Controls in the form of the Army’s 3Rs (Recognize, Retreat, Report) signage and public education will also be implemented. Long-term monitoring will be performed to maintain the signs and check for any changed site conditions, such as erosion of streambeds or exposure of the lakebed due to drought.
Hunters and other recreational users leaving the frequently-trafficked areas and entering into the hunting units in Pat Mayse WMA should familiarize themselves with the 3Rs of ordnance safety before visiting the WMA.