Specifications include, but are not limited to: 1. the removal and disposal of aged filter media. Contractor is responsible for the land fill disposal, or beneficial reuse of spent water treatment filtration media and all necessary permitting, testing, and fees. 2. the removal and careful storage of the filter backwash troughs to be reinstalled. 3. the application of Xypex crystalline cementitious waterproofer to the exterior filter walls. 4. the furnishing and installation of proposed filter underdrains, filter media, and replacement FRP backwash troughs, and ancillary items. 5. the construction of the proposed sodium hypochlorite building and furnishing and installation of the associated pumps, tanks, feed equipment, and ancillaries. 6. the furnishing and installation of an electric actuator on the existing 14” backwash supply butterfly valve 7. mobilization and demobilization 8. demolition, earthwork, seeding, and erosion control 9. Electrical and Controls work 10. Miscellaneous appurtenances 11. Safety Systems