A munitions response area is a defense site that is known or suspected to contain unexploded ordnance, discarded military munitions, or munitions constituents such as ammunition, bombs, grenades, mines, missiles, and rockets. 

Unexploded Ordnance (UXO-6)
Section 1 (Introduction), paragraphs 1 and 2

Overview of what munitions response areas (MRAs)/ munitions response site (MRS) are and the need to clean them up.

Attenuation Processes for Metals and Radionuclides (APMR-1)
Section 1.1.1 (Types of Sites)
Various sites have been identified as having metal and/or radionuclide contamination from a wide variety of waste release scenarios, deposition of spent and waste deposition from the production of nuclear weapons is listed here.

Small Arms Firing Range (SMART-1)
Section 1 (Introduction) and 2 (Site Characterization)
This guidance displays an easy-to-follow decision diagram for determining the best ways to do site characterization and remediation alternative at closed small arms firing ranges.

Small Arms Firing Range (SMART-2)
Section 1 (Introduction)
Discusses what is considered a small arms firing range and gives a general overview of the environmental impacts they have.