10 CSR 23-6.040 - Construction Standards for Test Holes

PURPOSE: This rule is being amended to remove unnecessary restrictions regarding the amount of permanent casing that must be set into bedrock and to move requirements that relate to groundwater protection to 10 CSR 23-6.020 General Protection of Groundwater Quality and Resources.

(2) (1) Casing when used shall follow the minimum standards pursuant to 10 CSR 23-3.030(1)(A).

(3) (2) Casing Depth. If permanent surface casing is set, it must be set at least thirty feet (30') into bedrock.

(4) (3) Temporary Cap. All holes must be capped during the period they remain unplugged pursuant to 10 CSR 23-3.030(1)(E).

(6) (4) Grout when used to seal casing annulus shall follow materials and methods pursuant to 10 CSR 23-3.030(1)(C).

Notes

10 CSR 23-6.040

AUTHORITY: sections 256.606 and 256.626, RSMo 1994.* Original rule filed Aug. 17, 1993, effective 3/10/1994. Amended: Filed Nov. 1, 1995, effective 6/30/1996. Amended by Missouri Register January 15, 2019/Volume 44, Number 2, effective 2/28/2019

*Original authority: 256.606, RSMo 1991 and 256.626, RSMo 1985, amended 1991.