Specifications include, but are not limited to: 1. Contractor to remove and dispose of existing filter media (anthracite and gravel) and install new media retainer caps and anthracite. 2. Contractor to remove and replace grouting for installation of media retainer caps and repairs to underdrain grouting as directed by owner during construction. 3. Contractor to remove existing coatings on filter concrete surfaces, valves, and stilling wells surfaces. Contractor to apply new coatings to existing and additional areas on filter concrete walls and gullet floors, valves, and stilling wells. 4. Contract to remove and replace filter deck coatings where existing. 5. Contractor to remove and replace coatings on DAF basin concrete surfaces and recycle pipe surfaces where existing. 6. Contractor to complete concrete repairs in filters, filter deck, DAF basins, and DAF basin stairwells as directed by Owner during construction. 7. Contractor to complete repairs to Filter and DAF Basin handrails and curbs. 8. Contractor to complete repairs to DAF basin spray wash system supports as directed by Owner during construction. 9. Contractor to replace DAF Basin PLCs. 10. Contractor to replace filter deck lighting. 11. Contractor to replace gas unit heaters.