327 Ind. Admin. Code 8-3.4-23

Current through January 8, 2025

Section 327 IAC 8-3.4-23 - Grouting requirements

Authority: IC 13-14-8; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-3-1; IC 13-18-4-1

Affected: IC 13-11-2; IC 13-13-5-1; IC 13-18-2

Sec. 23.

This section governs grouting materials and the installation of grouting materials as follows:

(1) Grouting materials shall consist of the following:

(A) Neat cement grout shall consist of cement conforming to ASTM C150-04 Standard Specification for Portland Cement* and contain at least two percent (2%) but not more than five percent (5%) by weight of bentonite additive.

(B) Bentonite slurry that can include polymers designed to retard swelling.

(C) Pelletized, granular, medium-grade, or coarse-grade crushed bentonite.

(D) Concrete grout shall consist of equal amounts of:

(i) cement, conforming to AWWA A100-97 AWWA Standard for Water Wells**; and

(ii) sand mixed with the addition of water to make a mixture not exceeding six (6) gallons of water per one (1) cubic foot of cement; and contain at least two percent (2%) but not more than five percent (5%) by weight of bentonite additive.

(2) The installation of grouting materials shall be in accordance with the following:

(A) Except as provided in section 21(2) of this rule, neat cement and bentonite slurry shall be pressure pumped into place with a grout pipe from the bottom of the annular space upward in a continuous operation.

(B) Pelletized, granular, medium-grade, or coarse-grade crushed bentonite shall be introduced in a manner to prevent bridging of the borehole annulus.

(C) Concrete grout shall be installed according to one (1) of the following:

(i) Pressure pumped.

(ii) Placed by gravity through a grout pipe from the bottom of the annular space upward in a continuous operation.

(iii) Introduced in a manner to prevent bridging of the borehole annulus.

(3) The annulus of a well shall be grouted with one (1) of the types of grout as specified in subdivision (1) and in accordance with the applicable grout installation methods specified in subdivision (2), with the exception of a prohibition against using the method named in subdivision (2)(C)(iii) if:

(A) the diameter of the borehole is eight (8) inches or larger than the outside diameter of the well casing; and

(B) the well is equal to or less than one hundred (100) feet in depth.

(4) The annulus of a well shall be pressure grouted with neat cement, concrete grout, or a bentonite slurry if:

(A) the diameter of the borehole is less than eight (8) inches larger than the outside diameter of the well casing; or

(B) the well is greater than one hundred (100) feet in depth.

(5) The annulus of a well may be grouted, with concrete grout containing gravel not larger than one-half (1/2) inch in size, by using gravity without the use of a grout pipe if:

(A) the diameter of the borehole is greater than twelve (12) inches larger than the outside diameter of the well casing; and

(B) the depth to be grouted is equal to or less than ten (10) feet.

(6) Grouting of the borehole annulus shall be accomplished upon the earlier of the following events:

(A) Within twenty-four (24) hours following the installation of the well casing.

(B) The removal of drilling equipment from the proposed well location.

(7) All work on the well shall cease during the grout setup time as specified by the grout material supplier.

*This document is incorporated by reference. Notwithstanding language to the contrary in the primarily incorporated documents, the versions of all secondarily incorporated documents, which are those documents referred to in the primarily incorporated documents, shall be the versions in effect on the date of final adoption of this rule. Copies of this standard may be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103 or from the Indiana Department of Environmental Management, Office of Water Quality, Indiana Government Center-North, 100 North Senate Avenue, Room N1255, Indianapolis, Indiana 46204.

**This document is incorporated by reference. Notwithstanding language to the contrary in the primarily incorporated documents, the versions of all secondarily incorporated documents, which are those documents referred to in the primarily incorporated documents, shall be the versions in effect on the date of final adoption of the primarily incorporated document. Copies of this standard may be obtained from the American Water Works Association, 6666 West Quincy Avenue, Denver, Colorado 80235 or from the Indiana Department of Environmental Management, Office of Water Quality, Indiana Government Center-North, 100 North Senate Avenue, Room N1255, Indianapolis, Indiana 46204.

327 IAC 8-3.4-23

Water Pollution Control Board; 327 IAC 8-3.4-23; filed Jun 17, 1999, 1:50 p.m.: 22 IR 3376; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; errata filed Feb 6, 2006, 11:15 a.m.: 29 IR 1937; filed Apr 24, 2006, 3:00 p.m.: 29 IR 2968; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR-327070553BFA; readopted filed Jul 29, 2013, 9:21 a.m.: 20130828-IR-327130176BFA

Readopted filed Jun 6, 2019, 1:59 p.m.: 20190710-IR-327190246BFA