Class 4 magazines shall be permitted in warehouses, wholesale and retail establishments when located on a floor which has an entrance at outside grade level and the magazine is located not more than 10 feet from such an entrance. Two Class 4 magazines may be located in the same building when one is used for blasting caps in quantities not in excess of 5,000 caps and a distance of 10 feet is maintained between magazines. The location of a Class 4 magazine within a building shall not be changed without the approval of the State or Local Fire Marshal.
Conn. Agencies Regs. § 29-349-174