Flexible Base Material for NIWTP Levee Road Resurfacing

The International Boundary and Water Commission, U.S. Section, seeks quotations from qualified small business concerns to furnish and deliver up to 10,000 tons of Type ABC Lime aggregate base material to the Nogales International Wastewater Treatment Plant in Rio Rico, Arizona, with quotations due September 30, 2026, at 12:00 PM Mountain Time. This is a 100 percent small business set-aside restricted to concerns qualifying as small under NAICS code 212321 (Construction Sand and Gravel Mining), with a size standard of 500 employees.

The material shall consist of dense-graded crushed stone or gravel blend mixed with lime, with a maximum aggregate size of 1 inch, and must meet specified gradation requirements: 0 percent retained at 1 inch, 0–30 percent at 3/4 inch, 50–65 percent at No. 4 sieve, and 70–90 percent at No. 40 sieve, with a maximum liquid limit of 40 and minimum of 20. No substitutions, deviations, or exceptions to the Performance Work Statement requirements will be accepted. The contractor shall provide all labor, equipment, transportation, supplies, loading, and permits necessary for F.O.B. Destination delivery. Delivery must commence within 10 calendar days of Contracting Officer notification and occur between 7:30 AM and 4:00 PM, Monday through Friday, excluding federal holidays, within a 365-calendar-day period of performance. Award will be made using Lowest Price Technically Acceptable procedures, with technical acceptability determined on a pass/fail basis requiring full compliance with PWS specifications and confirmed delivery and schedule capability. Quotations must include legal business name, physical address, Unique Entity Identifier, CAGE code, point of contact, unit price per ton, and total Firm Fixed Price. The contract specialist is Suzette Smith; quotations are submitted electronically to suzette.smith@ibwc.gov.