Oregon Administrative Rules
Chapter 690 - WATER RESOURCES DEPARTMENT
Division 210 - WELL CONSTRUCTION STANDARDS
Section 690-210-0230 - Inner Casing

Universal Citation: OR Admin Rules 690-210-0230
Current through Register Vol. 63, No. 9, September 1, 2024

Inner casing installed into a well must meet the minimum requirements of well casing (OAR 690-210-0190). The space between the two well casings shall be sealed so as to prevent the movement of water between the two casings. Inner casing installed in a well shall extend or telescope at least eight feet into the lower end of the well casing. The inner casing must be centered and must be a minimum of one inch smaller in diameter than the outer casing if an under reaming method system is used. If other methods are used, the inner casing must be a minimum of two inches smaller in diameter than the outer casing. The grout must be placed in a positive manner in accordance with method A, B, D, or E (see Appendix 210-3).

To view attachments referenced in rule text, click here to view rule.

Statutory/Other Authority: ORS 536.090, ORS 537.505-537.795, ORS 536.027, ORS 536.900 & ORS 537.992

Statutes/Other Implemented: ORS 536.090, ORS 537.505-537.795, ORS 536.900 & ORS 537.992

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