Section 445A.67075 - Storage structures: Materials1. Except as otherwise provided in subsection 3, storage tanks must: (a) Consist of welded steel and comply with American Water Works Association Standard D100;(b) Consist of factory-coated, bolted steel and comply with American Water Works Association Standard D103;(c) Consist of reinforced concrete of portland cement;(d) Consist of prestressed concrete and comply with American Water Works Association Standard D110; or(e) Consist of fiberglass-reinforced plastic and comply with American Water Works Association Standard D120.2. Reservoirs with floating covers may be used for the storage of water only if approved by the Division or the appropriate district board of health after evaluation on a case-by-case basis. If so approved, such a reservoir must have a lining and cover composed of a flexible membrane which conforms to the requirements of American Water Works Association Standard D130. Additional information for designing, installing, operating and maintaining reservoirs using flexible-membrane materials is outlined in Manual M25 Flexible-Membrane Covers and Linings for Potable-Water Reservoirs, third edition, of the American Water Works Association. This document is available at a cost of $52 for members and $83 for nonmembers from the American Water Works Association, 6666 West Quincy Avenue, Denver, Colorado 80235, by toll-free telephone at (800) 926-7337, or at the Internet address http://www.awwa.org/store.aspx.3. The Division or the appropriate district board of health may authorize a public water system to use a storage tank composed of galvanized steel if:(a) The plans and specifications for the tank are submitted to the Division or the appropriate district board of health.(b) The tank is assembled and hot-dip galvanized, and any other coating is applied, at a factory. The tank must not be modified at another location unless the modification is inspected by an engineer and approved by the Division or the appropriate district board of health.(c) Any material used to coat the tank is determined to be compatible with drinking water. Before being introduced into service, the tank must be sampled for the presence of volatile organic chemicals.(d) An analysis of the quality of water in the tank demonstrates that the stored water will not corrode the tank and the only material used to coat the tank is a galvanized coating.(e) The construction of the tank complies with American Water Works Association Standard D103.4. This section does not:(a) Prohibit the Division or the appropriate district board of health from:(1) Disallowing the use of galvanized storage tanks in a public water system; or(2) Imposing more stringent requirement for the construction of a galvanized storage tank.(b) Apply to the use of galvanized tanks for any purpose other than the storage of water for a public water system.5. All standards referenced in this section are adopted by reference in NAC 445A.6663.Nev. Admin. Code § 445A.67075
Added to NAC by Bd. of Health, eff. 2-20-97; A by Environmental Comm'n by R194-08, 10-27-2009; A by R118-14, eff. 12/22/2014