OAR 690-210-0160: Additional Standards for Filter Pack Wells with Surface Casing

If a permanent surface casing is installed in the construction of a filter pack well, a watertight, welded, steel plate at least 3/16 of an inch in thickness shall be installed between the inner production casing and the outer surface casing at the well head. A watertight fill port with threaded cap may be installed for the purpose of placing additional filter pack material in the well. (See Figure 210-8.) [ED. NOTE: To view attachments referenced in rule text, click here to view rule.]