4
Biofuels
37
Waste disposal for others; maintenance of municipal, industrial, and commercial water and waste water treatment systems, sludge and waste incineration and disposal facilities, and power plants; construction, of municipal, industrial and commercial water and waste water treatment systems, sludge and waste incineration and waste disposal facilities, and power plants and consultation services related to the foregoing
39
Public utilities in the nature of supplying water and water distribution and distribution of treated water, power, and steam; operation of pipelines; utility services in the nature of electricity distribution; utility services, namely, transmission of electricity; utility services in the nature of sludge and waste incineration and waste disposal facilities; and consultation services related to the foregoing and related to public utilities in the nature of supplying water and water distribution and distribution of treated water, power and steam
40
Generation of electricity; generation of power; treatment of municipal, industrial and commercial water and waste water; sludge and waste incineration; waste-to-fuel generation services; waste-to-energy generation services; recycling of electronic equipment and devices; and consultation services relating to generation of electricity, generation of power, and municipal, industrial and commercial water and waste water treatment services; providing municipal, industrial and commercial water and waste water treatment system services
42
Architectural design of municipal, industrial and commercial water and waste water treatment systems, sludge and waste incineration and disposal facilities, and power plants; design, engineering, and development of power plants; consultation relating to engineering construction services, namely, design, engineering, and development of municipal, industrial, and commercial water and waste water treatment systems, sludge and waste incineration and disposal facilities, and power plants; engineering services for the construction, design, and development of municipal, industrial and commercial water and waste water treatment systems, sludge and waste incineration and waste disposal facilities, and power plants; and consultation services related to the foregoing