Conn. Agencies Regs. § 29-349-344
When two or more storage magazines are located on the same property, each magazine must comply with the minimum distances specified from inhabited buildings, railways and highways, and in addition, they should be separated from each other by not less than the distances shown for "Separation of Magazines" except that the quantity of explosives contained in cap magazines shall govern in regard to the spacing of said cap magazine from magazines containing other explosives. If any two or more magazines are separated from each other by less than the specified "Separation of Magazines" distances, then such two or more magazines, as a group must be considered as one magazine, and the total quantity of explosives stored in each group must be treated as if stored in a single magazine located on the site of any magazine of the group, and must comply with the minimum distances specified from other magazines, inhabited buildings, railways and highways.
Conn. Agencies Regs. § 29-349-344