ATTCH 1 - Performance Work Statement.pdf

Performance Work Statement

1. Detachment 2, 18th Civil Engineer Squadron, Bellows Air Force Station (BAFS), desires to purchase

~1,000 Tons of 1.5-Inch (37.5 mm) Dense-Graded Aggregate Base Course. The material will be primarily used to repair, stabilize, and maintain the unpaved Tinker Bridge bypass route supporting continuous installation and construction traffic.

2. Regulatory Requirements:

a. All aggregate material must comply with UFC 3-250-01 (Pavement Design for Roads) and UFC

3-250-11 (Soil Stabilization for Pavements).

b. Material must conform strictly to ASTM D2940 / D2940M (Standard Specification for Graded

Aggregate Material for Bases or Subbases for Highways or Airports) and Hawaii Department of

Transportation (HDOT) Highways Division Standard Specifications for Road and Bridge

Construction, Section 703.06 (Aggregate for Untreated Base).

c. Material must be chemically inert, non-toxic, and free of petroleum, clay, organic matter, or chemical contaminants in accordance with 32 CFR 989 (Environmental Impact Analysis Process) and Hawaii Administrative Rules Title 11 (State of Hawaii Department of Health).

3. Material Physical and Sizing Requirements:

a. Geological Composition: 100% crushed virgin Hawaiian basaltic lava rock (dense, hard, durable, unweathered native volcanic stone). Crushed coral, river rock, alluvial gravel, uncrushed stone, recycled asphalt pavement (RAP), and recycled concrete aggregate (RCA) are strictly prohibited.

b. Particle Angularity & Fracture: 100% crushed quarry rock with sharp, mechanically fractured angular faces. A minimum of 90% of particles by weight must have two or more fractured faces per ASTM D5821. Rounded, smooth, or spherical river gravel will not be accepted.

c. Gradation Requirements: Dense-graded 37.5 mm (1.5-inch nominal maximum size) meeting the following master sieve distribution limits per ASTM D2940 / HDOT Section 703.06:

o Sieve 37.5 mm (1.5 in): 100% passing by weight o Sieve 25.0 mm (1.0 in): 90% to 100% passing by weight o Sieve 19.0 mm (3/4 in): 65% to 90% passing by weight o Sieve 4.75 mm (No. 4): 35% to 55% passing by weight o Sieve 0.075 mm (No. 200): 2% to 9% passing by weight (non-plastic mineral dust)

d. Coloration: Uniform dark charcoal grey to black (typical of high-density Oahu volcanic quarry basalt).

4. Technical and Capacity Performance Requirements:

a. Use ASTM D2940/HDOT Section 703.06 compliance and current quarry sieve analysis only.

b. Material must be capable of achieving 98% to 100% maximum dry density under standard vibratory roller compaction per ASTM D1557 (Modified Proctor).

c. Aggregate must have a maximum Los Angeles (LA) Abrasion loss of 500 revolutions in accordance with ASTM C131 / AASHTO T 96 to prevent aggregate degradation and crushing into dust under heavy 80,000-lb construction and emergency vehicle wheel loads.

d. The fines fraction must be non-plastic with a Liquid Limit (LL) and a Plasticity Index (PI) per

ASTM D4318.

5. Delivery, Trucking, and Staging Requirements:

a. The vendor must provide bulk delivery of 1,000 Tons directly to Bellows Air Force Station, Waimanalo, HI 96795.

b. Delivery must be performed using certified commercial end-dump or belly-dump semi-trailers.

Material must be tailgate-dumped or stockpiled along designated stations of the active Tinker

Bridge Bypass Corridor as directed by on-site Bellows CE pavement personnel.

c. Deliveries must be phased at a rate of 100 - 150 tons per day (approximately 5 truckloads daily) over 7 to 10 consecutive business days to accommodate organic military equipment spreading and compaction capabilities.

d. Delivery schedules must be coordinated at least 48 hours in advance with the Bellows CE

Technical POC.

e. Every truck delivery must provide a printed, automated scale weight ticket certified under NIST

Handbook 44 showing gross, tare, and net weights. Total cumulative billing must reconcile exactly to delivered scale tickets.

f. Commercial drivers must possess valid REAL ID driver’s licenses, current vehicle registration, and commercial insurance to gain entry through the Bellows AFS Main Gate.

6. Quality Control and Maintenance Support Requirements:

a. Offerors may be quarry producers, suppliers, or distributors, provided they can furnish aggregate meeting all specifications, provide required quarry quality-control documentation, and meet the required delivery schedule.

b. The vendor must provide a Certified Quarry Quality Control Sieve Analysis Report dated within sixty (60) calendar days of delivery verifying full compliance with ASTM D2940 and

HDOT Section 703.06 standards.

c. Any delivery containing subgrade soil, clay, excessive moisture, uncrushed river gravel, or non-conforming gradation will be rejected on-site and must be hauled away and replaced at the vendor's sole expense.

7. Installation and Work Scope Coordination:

a. Government Organic Labor: Spreading, shaping, moisture conditioning, and final vibratory roller compaction will be performed organically by Bellows CE military to include AFSC 3E2X1

Dirt Boyz, Army Corps and civilian craftsmen.

b. Contractor Scope Limitation: The vendor is solely responsible for material supply, quarry weighing, hauling, and staging/tailgating at the designated bypass roadway coordinates.

Requirements: Purchase of 1.5-Inch Dense-Graded Basalt Base Course ~1,000 Tons. Phased bulk commercial delivery to Bellows AFS.

Warranty: Require a one-year warranty limited to material conformance and replacement of rejected/nonconforming loads