42 hazardous, radiological and mixed waste management; technical consultation regarding waste disposal; waste removal, namely, hazardous, toxic, radioactive waste; waste management; pollution prevention, namely, air, water, process-by-product; design of waste handling facilities and their construction; demolition and decommissioning; environmental engineering; consultation regarding environmental pollution; environmental engineering regarding hazardous waste handling in facilities; design of pollution remediation facilities; and reviewing standards and practices to assure compliance with environmental regulations and laws