Opening of Bids - Granular Activated Carbon Re-Activation & Virgin Replacement - Calgon Carbon Corporation

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c. Apparent Density: i. The apparent density of the reactivated GAC shall be not less than 0.20 g/cc, as determined in accordance with ASTM D2854/AWWA B604, latest edition. d. Particle Size Distribution: i. Particle size distribution shall be determined in accordance with ASTM 2862/AWWA B604, latest edition. The particle size range of the reactivated GAC shall be as specified herein: ii. Mesh Size: 8 x 30 iii. No more than 15% of the reactivated GAC shall be retained on the maximum - size sieve, and no more than 4% of the reactivated GAC shall pass the minimum -size sieve. e. Uniformity Coefficient: i. The reactivated GAC shall have a uniformity coefficient not greater than 2.1. f. Abrasion: i. The retention of mean particle diameter of the reactivated GAC shall not be less than 70% as determined either by the stirring abrasion test or the Ro-Tap abrasion test, AWWA B604, latest edition. g. Performance Criteria: i. Adsorptive Capacity -Iodine Number : 1. If the iodine number of the received spent GAC is >550, the reactivated GAC (on a blended basis of reactivated GAC plus virgin make-up GAC as required) shall attain an iodine number at least 800 mg/g, as determined according to ASTM 4607, latest edition. 2. If the iodine number of the received spent GAC is <550, the reactivated GAC (on a blended basis of reactivated GAC plus virgin make-up GAC as required) shall attain an iodine number at least 250 mg/g greater than the spent GAC, as determined according to ASTM 4607, latest edition. 3. In no case shall the iodine number of the reactivated GAC (on a blended basis of reactivated GAC plus virgin make-up GAC as required) be less than 500 mg/g carbon as determined according to AWWA B604, latest edition. Reactivated GAC, including virgin make-up GAC blended as required, shall meet the following specifications: Ver. 13 — 6101115