37
Construction of oil well drilling work sites and road access to such sites; leasing of drilling, fluid handling and circulating equipment; drilling site clean up, closure, waste disposal and remediation services; environmental remediation services, namely, the disposal of naturally occurring radioactive material, and disposal of nonhazardous oil field waste; construction of oil well production sites; maintenance of oil well production site equipment; maintenance of wellhead control equipment; machinery and maintenance and repair services, namely, the removal of wellhead control equipment; and environmental remediation services, namely, waste disposal associated with the removal of oil well production sites
40
Environmental remediation services, namely, the decontamination of naturally occurring radioactive material; offsite waste treatment of nonhazardous oil field waste; and custom manufacture of wellhead control equipment
42
Design for others in the field of oil well drilling; site environmental analysis, namely, analytical sampling and review of standards for legal compliance with federal and state environmental laws and regulations; and onsite hazardous waste management during the oilfield drilling process