OAR 690-210-0060: Explosives

(1) If explosives are used in the construction of a water supply well, their use must be reported on the well report. The type and amount of explosive(s) used shall be reported. (2) In no case shall explosives other than commercially developed gun perforators be detonated inside the well casing or liner pipe without written permission from the Director. The request shall include the type of explosive to be used, how it will be placed, and where it is to be placed. In no case shall an explosive charge be dropped down a well or used to sever installed well casing or liner pipe