Ala. Admin. Code r. 335-7-5-.05

Current through Register Vol. 42, No. 12, September 30, 2024

Section 335-7-5-.05 - Grouting Requirements

(1) Well casings used in the construction of community and NTNC water supply wells, shall be pressure cement grouted. The grout shall be added at the bottom of the outer casing under pressure and flow in a continuous operation until the annular opening is filled and overflowing. Wells shall be grouted from the immediate vicinity of the uppermost formation to land surface unless otherwise approved by the Department. A sufficient annular space shall be available to provide a minimum of two inches of grout around the entire length of protective casing to protect the water bearing aquifer from surface water contamination and undesirable water in upper formations. Casing to be grouted in the drill hole or annular opening shall be provided with sufficient guides to permit unobstructed flow.

(2) Wells for non-community water systems may be grouted as above or by a tremie pipe method. Grout must be introduced at the bottom of the zone to be grouted, and the material continuously introduced. Minimum annular space shall be three inches. In wells greater than 100 feet the length of grout seal shall not be less than 100 feet as measured from the land surface to the end of the grout zone. Other methods of grouting must be approved by the Department prior to installation.

Author: Joe Alan Power, Edgar K. Hughes

Ala. Admin. Code r. 335-7-5-.05

May 23, 1977. Repealed and Readopted: January 4, 1989; October 31, 1990; effective December 5, 1990. (Rule was renumbered from.05 to.07.) (Rule was renumbered from.07 to.13, per certification filed December 21, 1998; effective January 25, 1999, with no changes being made to the rule.) Amended: Filed May 2, 2000; effective June 6, 2000. Amended: Filed November 7, 2005; effective December 12, 2005.

Rule 335-7-5-.13 was renumbered to .05 and original Rule 335-7-5-.05, SWAA Delineation For Community Water System, was repealed as per certification filed November 7, 2005; effective December 12, 2005. See attached history:

History: New Rule: Filed December 21, 1998; effective January 25, 1999. Amended: Filed May 2, 2000; effective June 6, 2000. Amended: Filed December 24, 2003; effective January 28, 2004. Repealed: Filed November 7, 2005; effective December 12, 2005.

Statutory Authority:Code of Ala. 1975, §§ 22-23-1 through 22-24-12.