NAC445A.6696. Springs: Development.

Except as otherwise justified by an engineer and approved by the Division or the appropriate district board of health, if a spring is used as a source of water for a public water system:

     1. A diversionary channel must be constructed in such a manner as to be capable of diverting from the area of the spring all anticipated runoff of surface water.

     2. Each area for the collection of water from the spring must have at least one junction box, which can be locked, suitable for the inspection of the spring and the testing of water from the spring.

     3. All collection boxes and junction boxes must incorporate access by manholes, air vents and overflow piping. The lids for those boxes must be gasketed, and the chambers of those boxes adequately screened and vented. Vents must be elbowed downward and placed not less than 12 inches nor more than 18 inches off the ground.

     4. Any vegetation which is located within 100 feet of the spring and has a root system greater than 2 feet in length must be removed.

     5. A permanent device for measuring the flow of water must be installed. The device, which may consist of a weir, must be properly housed and otherwise protected.

     6. The spring must be developed in such a manner as to eliminate, as thoroughly as possible, the ponding of water within the area for collection. Where the ponding of water is unavoidable, the excess must be collected as drainage and routed down gradient beyond the immediate area for collection in a controlled manner which avoids the possibility for pollution or contamination of the spring.

     (Added to NAC by Bd. of Health, eff. 2-20-97; A by Environmental Comm’n by R194-08, 10-27-2009)