Section Env-Wq 713.12 - Aerated Lagoon Design: Overflow Structures(a) Intakes for aerated lagoon overflow structures shall be located a minimum of 10 feet from the toe of the dike and 2 feet below the top of the liner.(b) Weirs or gates shall be of lightweight, corrosion-resistant material such as aluminum or fiberglass.(c) Scum baffle mechanisms shall be provided.(d) Provision shall be made for draining the lagoons.(e) Location of draw off pipes shall minimize erosion effects.(f) To prevent overtopping the dikes, emergency overflow between cells shall be provided.(g) Hydraulic capacity for discharge structures and piping shall allow for a minimum of 250 percent of the design maximum day flow of the system.N.H. Code Admin. R. Env-Wq 713.12
(See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06
Amended byVolume XXXIV Number 46, Filed November 13, 2014, Proposed by #10693, Effective 10/15/2014, Expires10/15/2024.