Or. Admin. Code § 690-210-0230

Current through Register Vol. 63, No. 11, November 1, 2024

Section 690-210-0230 - Inner Casing

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).

WRD 9-1978, f. 12-12-78, ef. 1-1-79; WRD 13-1986, f. 10-7-86, cert. ef. 11-1-86, Renumbered from 690-061-0231; WRD 8-1993, f. 12-14-93, cert. ef. 1-1-94; WRD 5-2015, f. & cert. ef. 7/1/2015; WRD 5-2023, amend filed 06/22/2023, effective 7/1/2023

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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