Kingman Range MRS

Arizona Army National Guard Kingman Range MRS

Location

The Arizona Army National Guard (ARNG) Kingman Range Munitions Response Site (MRS) is located in Kingman, Mohave County, Arizona and is a Non-Department of Defense Owned, Non-Operational Defense Site (NDNODS). Kingman Range MRS occupies 33.43 acres within the municipal quadrant of Eastern Street, North Central Street, Airfield Avenue, and Pasadena Avenue. The MRS has been developed and privately owned since 1968. There are multiple residential structures within the MRS boundary.

The ARNG utilized the area for training of small arms and submachine guns from 1951 to 1968. The firing line was located along Eastern Street. Targets were located near the natural bedrock escarpment backstop located 1,500 feet away.

Contaminants of Concern

The contaminants of concern (COCs) includes munitions and explosives of concern (MEC) and associated munitions constituents (MC). Contaminants of concern at the site may change as new data become available.

Public Health Impact

Military munition and unexploded ordinance (UXO) debris may pose an explosive hazard. Discovery of these materials should be reported to the local law enforcement authorities and left untouched.

Action Taken

The Kingman Range MRS site inspection (SI) field work was completed in December 2011, and involved 3.6 miles of visual survey paths using metal detectors and the collection of surface soil samples. The SI was submitted and approved by ADEQ in 2012. Field work for the remedial investigation (RI) was conducted in three mobilizations beginning in October 2017 and concluding in May 2019. The RI field work involved surface soil sampling, Digital Geophysical Mapping (DGM) and analog survey of the former backstop area. No RI activities were designed to take place within the developed areas, resulting in an area of investigation of 8.14 acres. The mapping and surveying activities obtained 91 percent coverage of the acreage investigated.

Status

The ARNG completed field work for the RI in May 2019 and submitted the draft report for ADEQ review in December 2019. In January 2020, the ARNG submitted a notice to conduct supplemental field work for the RI. An agreement was made between ADEQ and ARNG to submit a revised report with a feasibility study (FS). The RI/FS Report was finalized in February 2021. ARNG is currently working on the next milestone of the project, that is the Proposed Plan, which will be available for a 30-day public comment period.