Aggregate Materials for Chincoteague National Wildlife Refuge

elivery Site: 8231 Beach Rd, Chincoteague, VA 23336Aggregate materials Crushed aggregate materials shall meet the

requirements of the Virginia Department Of Transportation Specifications, Type 21B. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming to the following: (1) Los Angeles abrasion, AASHTO T 96 50 percent max. (2) Soundness of aggregate using sodium sulfate, 12 percent loss max. AASHTO T 104 (5 cycles) (3) Durability index (coarse), AASHTO T 210 35 min. (4) Durability index (fine), AASHTO T 210 35 min. (5) Fractured faces, ASTM D5821 50 percent min. (6) Without organic matter and lumps or balls of clay.(7) Liquid limit, AASHTO T 89, Method A 35 max. (8) Plasticity index, AASHTO T 90 10±3Gradation

Requirements for aggregate materials: Sieve size % passing 2 inch 100 1 inch 85-95 3/8 inch 50-69 No. 10 20-36 No. 40 9-19 No. 200 4-7 Unclassified Fill (Borrow) materialsSuitable, well-grade material of either stone fragments, including gravel, sand, or fine sand.(a) Maximum particle size 24 inches(b) Soil , AASHTO M 145 A-1, A-3, or A-2-4; granular materials with 35% or less passing the No. 200 sieve.PART C - OTHER PERFORMANCE

REQUIREMENTS AND INFORMATIONMATTERIAL SUBMITAL REQUIRED

A. Submit certificate from supplier certifying aggregate and fill materials meet the

requirements of this statement of work.