Specifications include, but are not limited to: A. Water Treatment Plant No. 1 1. Remove existing roofing system and gravel ballast. 2. Remove existing aerator equipment, piping, curb, and all appurtenances at the roof level to the extents necessary. 3. Remove existing guardrail. 4. Remove existing aerator piping, valves, and fittings at the ground level. 5. Remove conduit and conductor for Aerator Actuator No. 3. 6. Repair existing roof penetrations. 7. Install new EPDM roofing system and appurtenances, including all work required for modification of plumbing, HVAC, and electrical systems. 8. Install new guardrail. 9. Install new aerator support beams and concrete pads. 10. Install new aerator equipment, piping, curb, and all appurtenances at the roof level.