(a) Except as otherwise provided in this section, all wells shall be cased using casing materials and installation methods in accordance with Sections 12A and B of California DWR Bulletin 74, Water Well Standards.
(b) The Enforcement Officer may approve, with the recommendation of the Technical Advisory Committee, new casing materials which may be developed in the future using new and improved technology.
(c) The uppermost perforations in casings shall not be above the depths specified in Section 6-8.1008 of this article.
(d) Wells may be constructed with a permanent conductor or outer casing, and, if so, there shall be at least two (2") inches of uniform annular space between the conductor and the hole for wells requiring a suffice seal. The inner, or production, casing may be of any size adequate for design production rates. Perforations may be located in the inner casing or in a liner of smaller diameter and suspended from the casing.
(e) Wells may be constructed with a single, or production, casing, and, if so, there shall be at least two (2") inches of uniform annular space between the casing and the hole for wells requiring a surface seal. Perforations may be located in the casing below the surface seal or in a liner of smaller diameter and hung from the casing. Excepted from this requirement is the cable tool drilling method when the drive shoe annulus is sealed in accordance with Section 6-8.1007 of this article. (§ 1, Ord. 765, eff. October 7, 1976, as amended by § 15, Ord. 811, eff. July 27, 1978; as amended by § 3, Ord. 1470, eff. July 14, 2016)