- (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.
Source. (See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06; ss by #10693, eff 10-15-14; ss by #14258, eff 7-1-25, EXPIRES: 7-1-35