TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE F: PUBLIC WATER SUPPLIES CHAPTER I: POLLUTION CONTROL BOARD PART 604 DESIGN, OPERATION AND MAINTENANCE CRITERIA SECTION 604.1450 SURFACE WATER CROSSINGS
Section 604.1450 Surface Water Crossings
a) For above‑water crossings, the pipe must be adequately supported and anchored, protected from damage and freezing, and accessible for repair or replacement.
b) Underwater Crossings
1) A minimum cover of five feet must be provided over the pipe.
2) When crossing water courses that are greater than 15 feet in width, the following apply:
A) the pipe must be of special construction, having flexible, restrained or welded watertight joints;
B) valves must be provided at both ends of water crossings so that the section can be isolated for testing or repair;
C) the valves must be easily accessible and not subject to flooding; and
D) permanent taps or other provisions to allow insertion of a small meter to determine leakage and obtain water samples must be made on each side of the valve closest to the supply source. |