Part 4731.7170 - TRITIUM NEUTRON GENERATOR TARGET SOURCEA. Use of a tritium neutron generator target source, containing quantities not exceeding 30 curies (1,110 MBq) and in a well with a surface casing to protect freshwater aquifers, is subject to parts 4731.7000 to 4731.7270, except parts 4731.7030 and 4731.7100.B. Use of a tritium neutron generator target source, containing quantities exceeding 30 curies (1,110 MBq) or in a well without a surface casing to protect freshwater aquifers, is subject to parts 4731.7000 to 4731.7280, except part 4731.7100.Minn. R. agency 144, ch. 4731, WELL LOGGING, pt. 4731.7170
Statutory Authority: MS s 144.1202; 144.1203