NAC445A.67165. Separation of lines: Sewer main crossing water main.

If a sewer main crosses a water main:

     1. The sewer main must be located at least 18 inches lower than the water main, as measured vertically from the exterior walls of the pipes; or

     2. If compliance with subsection 1 is impracticable:

     (a) A reasonable effort must be made to place the pipeline joints of the sewer main and water main, other than any welded joints, an equal distance from the point of crossing;

     (b) The sewer main and water main must be:

          (1) Located at least 6 inches apart, as measured vertically from the exterior walls of the pipes; and

          (2) Provided with such structural support as the supplier of water determines necessary; and

     (c) The area of crossing must be constructed in such a manner that:

          (1) The sewer main is composed of materials that:

               (I) For public water systems in Carson City, Fallon, Reno, Sparks, Yerington, Douglas County, Lander County, Lyon County, Nye County or Washoe County, comply with Standard Specifications for Public Works Construction and the American Water Works Association Standards;

               (II) For public water systems in Boulder City, Henderson, North Las Vegas, the Big Bend Water District or the Las Vegas Valley Water District, comply with Uniform Design and Construction Standards for Water Distribution Systems and the American Water Works Association Standards; or

               (III) For public water systems in other areas of the State, comply with the American Water Works Association Standards;

          (2) The sewer main consists of PVC which is constructed with joints that comply with Standard D3212 of the American Society for Testing and Materials;

          (3) The sewer main or water main is totally encased in at least 4 inches of cement slurry for a distance of at least 10 feet on each side of the point of crossing; or

          (4) The sewer main or water main is installed in a pipe sleeve that extends, without joints, at least 10 feet on each side of the point of crossing.

     (Added to NAC by Bd. of Health, eff. 2-20-97)