5YR landfill monitoring

The Department of the Interior Bureau of Indian Affairs Navajo Region is soliciting proposals for five-year landfill monitoring services covering 34 school facilities across the Navajo Nation in Arizona, New Mexico, and Utah. The contractor must conduct engineer inspections and evaluations of BIA-owned landfills, develop closure plans for five open landfills, verify cover depths against EPA regulatory standards (40 CFR 241 and 40 CFR 258.60(a)), and prepare an Engineering Evaluation/Cost Analysis (EE/CA) report with individual landfill assessments. Key qualifications include documented experience in solid waste landfill operations and closure, prior work on the Navajo Nation, EPA and Tribal Environmental Protection Agency RCRA compliance expertise, and Professional Engineer licensure in the applicable state. Evaluation will prioritize technical approach and past performance (weighted significantly more heavily than cost), with consideration of key project management and technical support qualifications, demonstrated experience on tribal trust lands, and three to five client references. The original proposal deadline of April 15, 2026 has been extended to May 1, 2026 at 4:00 PM Mountain Daylight Time, with the deadline for contractor inquiries established as April 15, 2026 at 4:00 PM MDT.

This procurement is designated as a 100 percent Indian Small Business Economic Enterprise (ISBEE) set-aside, requiring offerors to complete and submit a signed Indian Economic Enterprise Representation Form certifying their eligibility under the Buy Indian Act and Department of the Interior Acquisition Regulation Part 1480. The contract will be awarded as a firm-fixed-price purchase order with a performance period of 120 days from the Notice to Proceed, with the contract extending through June 2027 according to clarifications in the solicitation documents. The NAICS code is 562910 (Remediation Services) with a small business size standard of $25 million, and the product/service code is F999 (Other Environmental Services). Work will be performed at the BIA's Northern Regional Office in the Dine Economic Community Service Management area, with field work conducted at the 34 identified landfill sites distributed across five BIA administrative agencies: Chinle Agency, Eastern Navajo Agency, Fort Defiance Agency, Shiprock Agency, and Western Navajo Agency. Contractors must comply with applicable Service Contract Act prevailing wage determinations for New Mexico, Arizona, and Utah counties where work is performed.