1. If a constant release of a gaseous low-level radioactive isotope from a medical facility is allowed, what would be the acceptable release rate in a year's period (in rems per hour) given the data below:
a) Acceptable annual extra individual risk imposed by this release may not exceed 1 fatality in 1,000,000
b) Population density around the facility is 15,000 per square mile
c) A radius of 1 mile around the release site is considered to be affected.