44 00 00 Pollution and Waste Control Equipment
44 01 00 Operation and Maintenance of Pollution and Waste Control Equipment
44 01 10Operation and Maintenance of Air Pollution Control44 01 20Operation and Maintenance of Noise Pollution Control44 01 30Operation and Maintenance of Odor Control Equipment44 01 40Operation and Maintenance of Water Pollution Control Equipment44 01 50Operation and Maintenance of Solid Waste Control and Reuse44 01 60Operation and Maintenance of Waste Thermal Processing Equipment