Specifications include, but are not limited to: District One Mix Design: Mix Design minimum 500 psi Pumpable Flowable Fill Materials Cement – Type I/II- 150 lb 30% of total cementous materials Additive – Fly Ash Type C 350 lb 70% of total cementous materials Water – City Water 415 lb (49.7 gallon) Sand ASTM C 33/404, natural sand 2209lb 100% of total aggregates Admixture- AEA-92S Air entrain agent 5.00 oz/yd3 Mix Design minimum 4000 psi Pumpable Wing Wall Materials Cement – Type I/II- 395 lb 70% of total cementous materials Additive – Fly Ash Type C 169 lb 30% of total cementous materials Water – City Water 582.5 lb (33.9 gallon) Stone –SCA2/CPA4/57W57,ASTM C 33 865 lb 30% of total aggregates Sand - FA-A, ASTM C 33/404,natural sand 2209lb 70% of total aggregates Admixture- AEA-92S Air entrain agent 5.64 oz/yd3 Admixture – Mid range water reducer 16.92 ox/yd3;