Section Env-Ws 372.24 - Appurtenances and Installation of Storage Tanks(a) All small community water systems and those NTNC water systems important to public health as specified in Env-Ws 372.02(g) shall comply with this section.(b) All water storage tanks shall have drains. All water storage tanks installed outdoors shall be totally backfilled to minimize damage to the tank coating, and any damage to the exterior coating during construction shall be repaired prior to tank backfill. Water storage tanks shall be located above the seasonal high ground water table to prevent possible flotation when empty. Proposals to bury the water storage tank into or below the water table shall not be acceptable.(c) Atmospheric water storage tanks shall have a downward turned "U" vent with fine mesh screening to prevent the entry of small living things such as insects and small animals.(d) To help ensure the integrity of water storage tanks, all buried steel water storage tanks shall: (1) Be installed in accordance with current industry practice;(2) Be provided with an adequate underdrain system or a passive cathodic protection system; and(3) Have a protective coating both inside and out that is certified as being manufactured and applied in accordance with the approved listings in Env-Ws 305.(e) Atmospheric water storage tanks shall be equipped with a capped filler pipe, which shall be lockable if located on the exterior of the tank, to accommodate tank truck water delivery. Atmospheric water storage tanks existing as of January 1, 1996shall have filler pipes installed by January 1, 2007.(f) All water storage tanks larger than 500 gallons and installed after January 1, 1996 shall have a name plate identifying the following: N.H. Code Admin. R. Env-Ws 372.24
(See Revision Note at chapter heading Env-Ws 300) #6521, eff 6-4-97; ss by #8360, INTERIM, eff 6-4-05, EXPIRES: 12-1-05; ss by #8496, eff 11-30-05