La. Admin. Code tit. 51 § XII-249

Current through Register Vol. 50, No. 9, September 20, 2024

Section XII-249 - Surface Water Crossings

A. Above-water crossings or above-grade piping, if present shall be:

1. adequately supported and anchored;

2. protected from vandalism;

3. protected from foreseeable sources of damage;

4. protected from freezing by water velocity, heating trace systems and thermal insulation or other effective method; and

5. shall be placed so as to be accessible for repair or replacement.

B. Underwater crossings if present:

1. shall have over it a minimum cover of five feet unless otherwise approved by the state health officer; and

2. when crossing water courses which are greater than 15 feet in width measured at low flow, the following shall be provided:

a. the pipe shall be of special construction, having flexible, restrained or welded watertight joints;

b. valves shall be provided at both ends of water crossings within one half mile for less than 24 inch mains or within 2.5 miles for 24 inch for larger mains so that the section can be isolated for testing or repair; the valves shall be easily accessible, and not subject to flooding under normal conditions. All other mains, services, taps, hydrants, or other devices located inside of the limits of these isolation valves shall also have easily accessible isolation valve;

c. permanent taps or other acceptable means to allow the use of a small meter to determine leakage and obtain water samples on each side of the valve closest to the supply source. Combination taps for both an air relief valve and a pressure tap are permissible provided the assembly meets the above criteria and the air relief valve can be isolated during the testing of the crossing.

La. Admin. Code tit. 51, § XII-249

Promulgated by the Department of Health, Office of Public Health, LR 44340 (2/1/2018), effective 8/1/2018.

AUTHORITY NOTE: Promulgated in accordance with the provisions of R.S. 40:4.A.(8), 40:4.13.D.(1)(2) and 40:5.A.(2)(3)(5)(6)(7)(17).