EO14398 TRAIL AGGREGATE - GLBA

National Park Service Glacier Bay National Park & Preserve Supply Trail Surface Aggregate (TSA) Summary The National Park Service (NPS) requires a minimum of 1000 tons, approximately 800 cubic yards, of an aggregate mixture of fine and course crushed stone gravel suitable for the surface of trails, delivered to Glacier Bay National Park. Trail Surface Aggregate (TSA) is designed for use as a wearing surface for trails. It is different from traditional materials used to surface trails such as “number 10’s”. TSA is designed to have a uniform mixture of a range of rock sizes from 3/8-inch all the way down to fine material. This uniform mix allows excellent compaction to achieve a higher in-place aggregate density than commonly used aggregates to resist wear and erosion. Bid proposals shall include pricing for delivery of 1000 tons and shall include pricing for additional delivered product in increments of 250 tons, up to a maximum of 1000 optional tons beyond the base quantity of 1000 tons. The Government will have the option to purchase this additional product. Aggregate Specifications All TSA material is to be derived from natural stone formations. Stone is defined as rock that has been crushed; rock is defined as consolidated mineral matter. Both are restricted to that which has been mined or quarried from existing geologic bedrock formations. All components of the aggregate mix, including fines passing the #200 sieve, are to be derived by crushing parent rock material that meets TSA purchasing specifications for abrasion resistance, pH, Plasticity, and freedom from contaminants. Determine the amount of particles less than #200 sieve size using the washing procedures PTM No. 100. Crushed stone or crushed gravel, consisting of sound, tough, durable pebbles or rock fragments of uniform quality. Free from clay balls, vegetable matter, or other deleterious matters. TSA GRADATION: SIEVE SIZE TSA PERCENT PASSING 3/8” 100% ¼” 65% 3/16” 50% 1/8” 35% 1/16” 25% #200 6% max Aggregate Properties: -- 1 of 3 -- - Hardness: The acceptable limit as measured by weight loss is “less than 40% loss”. Los Angeles Abrasion test, AASHTO T-96 [ASTM C 131] shall be used to determine this property. - pH: Aggregate must be in the range of pH 6 to pH 12.45 as measured by EPA 9045C. - Plasticity: Material must not exceed Plasticity Index (PI) rating of 6 by ASTM D4318 Standard -Soundness ≤12% loss (NA2SO4) -Liquid Limit ≤25 Prevention of the Introduction of Invasive Plant Species: Within 14 days of contract award, the contractor shall submit the name and location of each aggregate extraction source and storage area along with any proposed measures to be taken to eliminate contamination by invasive plants. Prior to delivery into Glacier Bay National Park, all aggregate must be proven to be free of invasive plants either by heat sterilization (or) by NPS inspection. To meet the heat sterilization requirement, aggregate must be heated to 300 degrees Fahrenheit to ensure sterilization of invasive plants and seeds. Aggregate sterilized by heating shall be shipped to Glacier Bay National Park without being stockpiled in another location. To meet NPS inspection requirements, aggregate sources must be approved by Glacier Bay National Park to be free from noxious weeds or invasive plant materials. Each source will be subject to NPS managed inspection. Inspections will occur mid to late July. Within 21 days of inspection, the NPS will provide an inspection report listing any mitigation measures required prior to delivery. Contractor Equipment: All equipment utilized on the grounds and/or roads in the Park must be cleaned of any dirt, debris and organic materials that could potentially harbor invasive plants or seeds. All equipment utilized on the ground and/or roads in the Park must be safe and in sound mechanical condition and free from significant fluid leaks and free from significant visible exhaust emissions. Delivery of Aggregate: Delivery shall be made to Glacier Bay’s depot storage yard, at the designated, flagged location, approximately (58°27’10.61”N / 135°51’19.50”W). The Park’s barge landing ramp (the gravel ramp east of the concrete small boat launch ramp) will be available for the successful bidder to utilize for facilitation of delivery. 72 hour notification is required prior to use of the NPS barge landing ramp. Over the road delivery from barge landing to the final delivery location must be made between the hours of 7am and 7pm, all traffic laws must be obeyed. A designated staging area for a maximum of 4 dump trucks will be available near the barge landing site, additional space will be available at the delivery site. Delivery must be made between September 1, 2026 and May 1, 2027. -- 2 of 3 -- Bid Schedule Base bid 1000 tons TSA Option A 250 tons TSA Option B 250 tons TSA Option C 250 tons TSA Option D 250 tons TSA Location Illustration: -- 3 of 3 --