Arivaca Abandoned Mine Lands Safety Closures

This solicitation, numbered 127EAV26Q0068, is a combined synopsis and Request for Quotation issued under FAR Part 12 for the remediation of 60 abandoned mine features within the Arivaca Abandoned Mine Lands Remediation Project in the Nogales Ranger District of the Coronado National Forest in Santa Cruz County, Arizona. The work involves physical safety closures of shafts, adits, and tunnels using methods such as earthen backfill, polyurethane foam, cast-in-place concrete caps with specific structural requirements, and installation of bat-friendly grates, cages, and fencing systems, as detailed in a series of technical illustrations. All work must comply with ASTM standards for materials including Type II Portland cement, two-foot diameter riprap, and six-inch perforated PVC, ABS, or HDPE drainpipe, and adhere to the National Historic Preservation Act of 1966. The project requires revegetation of disturbed areas using approved seed mixes and visual inspections of 22 mine features to prevent wildlife entrapment during closure activities. The contract is a Firm-Fixed Price award with a period of performance from September 28, 2026, to February 26, 2027, and deliverables include two electronic copies of a technical bound report, two electronic project documentation files, and digital color photographs. The acquisition is structured as a Total Small Business Set-Aside under NAICS code 562910 with a small business size standard of 1,000 employees, and all offerors must be small businesses to qualify. Proposals must be submitted by 9:00 AM Pacific Time on July 27, 2026, via email with the solicitation number in the subject line, and include a completed and signed SF 1449, a fully priced Schedule of Items in Excel format (not PDF), a 20-page technical approach, and a 10-page past performance volume. Pricing for all 80+ line items is mandatory; failure to quote any item will result in exclusion. Quotations are evaluated as a pass/fail on technical responsiveness—requiring demonstrated experience, qualified personnel resumes, and schedule adherence—and on pricing completeness. The award will be made on a Best Value basis under FAR Part 13, where technical approach and past performance combined are more important than price, and tradeoffs will not be conducted. The contractor must comply with