42 Reviewing standards and practices to assure compliance with residential, governmental and commercial indoor air quality laws and regulations; bacteriological research; research, testing and consultation in the field of pollution prevention, namely,testing residential, governmental and commercial environments for microbiological contamination, and evaluation and testing of real estate for the presence of hazardous material; conducting feasibility studies in the fields of waste removal, soil and/or water treatment, and air purification; expert witness services in the fields of waste removal, soil and/or water treatment, and air purification