PUBLIC NOTICE OF AVAILABILITY
MARINE CORPS AIR STATION YUMA YUMA, ARIZONA
PROPOSED TIME-CRITICAL REMOVAL ACTION AT MUNITIONS RESPONSE PROGRAM SITE 1A AND
CERCLA AREA OF CONCERN (CAOC) 10 November 2025
The United States Department of the Navy (Navy) announces the public availability of the Action Memorandum to implement a Time-Critical Removal Action (TCRA) within an area of Munitions Response Program (MRP) Site 1a and Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Area of Concern (CAOC) 10, located at Marine Corps Air Station (MCAS) Yuma, in Yuma, Arizona. This removal action will involve digging up and safely transporting soil with lead and polycyclic aromatic hydrocarbons (PAHs) above cleanup levels to an approved off-site disposal facility. The Action Memorandum was prepared in coordination with the Arizona Department of Environmental Quality (ADEQ) and the U.S. Environmental Protection Agency (EPA).
The 11.43-acre cleanup area is located in the southeastern part of MCAS Yuma, south of the installation’s main buildings. This area was once used as the Moving Base Range, where aerial gunners trained by firing at moving targets from moving vehicles. Past investigations found lead and five PAHs—benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, dibenzo[a,h] anthracene, and indeno(1,2,3-cd)pyrene—at levels that could pose human health risks.
The Navy will carry out this removal action to ensure that soil left behind is safe. After contaminated soil is removed, samples will be collected to confirm cleanup goals are met and to determine whether the site is safe for unlimited use and unrestricted exposure. Because part of the area may be developed in the future for residential and recreational use, meeting these cleanup goals is especially important.
FOR MORE INFORMATION
The Action Memorandum documenting the Navy’s planned TCRA is available for public review at the locations listed below. The Navy will accept public comments during a 30-day period from November 10, 2025 through December 10, 2025. Comments can be submitted to the NAVFAC Southwest Public Affairs Office at usn.san-diego-ca.navfacswsanca.mbx.navfac-sw-pao-mailbox@us.navy.mil or mailed to: Public Affairs Office, 750 Pacific Highway, San Diego, CA 92132. Written comments must be postmarked no later than December 10, 2025. Verbal comments may be submitted at: (619) 909-8746.
Yuma County Main Library (Information Desk)
2951 South 21st Drive
Yuma, AZ 85364
(928) 782-1871
Download a PDF of the Action Memorandum using the link below:
Final Action Memorandum Time-Critical Removal Action at MRP Site 1a and CAOC 10
"Let us be your first resource" "Taking care of our own," the age-old adage of the Marine Corps, accurately describes the mission of the Navy-Marine Corps Relief Society. Located in Building 645, the Society provides services for active duty and retired military personnel and their dependents. As a private, non-profit, volunteer service organization, the primary mission of the Society is to assist eligible persons in coping with immediate financial emergencies and needs using donated funds. The office is staffed with trained volunteers who assess needs and give financial counseling to enable clients to live within their means on a continuing basis. Assistance may be provided through confidential counseling, interest-free loans or grants, and referrals to various other agencies. Emergencies, such as emergency travel, will be seen as soon as possible; an appointment is NOT necessary. To schedule an appointment for a budget or assistance, call the office at 928-269-2373. Normal operating hours are Monday-Friday from 8 a.m. to 4 p.m. Expectant parents may attend our Budget for Baby Class prior to the birth of their baby or up to six months after their baby is born. As a thank you for attending the Budget for Baby class, participants will receive a gift card, a handmade blanket and a folder full of resources. This class is a financial planning tool to get ready for the added expenses of another family member. Contact our office to register. The NMCRS Thrift Shop is located in Building 645 and operates several days a week. The shop is run by volunteers and contains many useable items for sale at low cost. The shop has a good selection of household items, toys, books, clothing and other miscellaneous items for sale at reasonable prices. Good, durable, re-saleable items may be left in the box beside the building or be brought into the shop during open hours. We cannot accept large items or furniture. The Uniform Locker is also available as a resource offering gently used uniform items at very low prices. Money made through sales goes directly back to help Marines and Sailors in need. Contact the office for more information and current operating hours at 928-269-2373. Volunteers are the work force of the Society and are always needed. Anyone interested in volunteering for any of our programs should call or drop by the office for more information. For financial emergencies on weekends, holidays, and after normal working hours, call the American Red Cross Emergency Service Center, toll-free: 1-877-272-7337.