Specifications include, but are not limited to: Item 1: 3/8” Surface Treatment Aggregate, price to be bid per ton. San Juan County will require an estimated quantity of 4,000 tons. Aggregate will be tested in accordance with the applicable AASHTO methods. Aggregate shall be free from clay balls or adherent films of clay or other matter that would prevent it from adhering to emulsified asphalt. Two samples will be taken and tested by supplier at intervals of 500 tons of production with a copy of the results being presented to the San Juan County Public Works Department. Aggregate must conform to the gradation requirements as specified herein. 3/8” Surface Treatment Aggregate - Maximum % Passing - Sieve Size 1/2” - 1/2”. 3/8” 100. No. 4 0 – 12. No 10 0 – 2. No. 200 1.0 Max. Surface treatment aggregate shall have a percent of L.A. wear of 40 or less and shall have a soundness loss of 12 or less. The amount of crushing shall be regulated so that at least 92 percent, by weight, of all the plus No. 4 sieve material shall have a minimum of 2 fractured faces. Surface Treatment shall be provided washed at the Contractor’s expense. Surface treatment aggregate that becomes contaminated or otherwise unusable shall be corrected by additional screening or washing at the Contractor’s expense.
