Section Env-Wq 305.20 - Approval of Special Discharges of Limited Duration(a) Any person proposing to discharge, as a one-time or otherwise limited duration discharge, waters or wastes to the public sewers that contain the substances or possess the characteristics enumerated in Env-Wq 305.06, or that exceed any applicable national categorical pretreatment standard, local limit or local prohibited waste, or that might otherwise have a deleterious effect on the POTW or its processes or equipment or on the POTW's receiving waters, or that might otherwise create a hazard to life or constitute a public nuisance, shall request permission from the POTW prior to discharging the waters or waste.(b) To request permission to discharge, the person shall provide the following information: (1) The nature of the waters or wastes to be discharged;(2) The estimated duration of the discharge; and(3) The anticipated start of the discharge.(c) If necessary to fully characterize the proposed discharge, the person shall provide: (1) The discharge peak rate and volume over a specified time period;(2) Chemical analyses of the proposed discharge;(3) A line diagram of the production process showing the origin of each waste stream;(4) A listing of all chemicals used in the facility which could be discharged to the sewer;(5) A plot plan of sewers on the user's property showing sewer and any pretreatment facility location;(6) Details of any wastewater pretreatment facilities; and(7) Details of systems established by the user to prevent and control the losses of materials through spills to the public sewer or storm drain.(d) The POTW shall deny the request unless it determines that the proposed discharge:(1) Is not likely to cause a significant adverse impact to receiving waters or to the POTW, community or POTW personnel;(2) Is not likely to create a hazard to life or constitute a public nuisance; and(3) Could be treated to alleviate the adverse impact.(e) If the POTW determines that the criteria specified in (d), above, are met, the POTW shall grant the request, subject to any conditions as are necessary to minimize any adverse impact, such as restricting the rate or timing of discharge or requiring pretreatment of the discharge.(f) If the POTW accepts the discharge but determines that the discharge will cause the community or POTW to incur additional expenses as a result of the discharge, the POTW may require the person to pay the added cost of handling and treating the wastes as a condition of allowing the discharge.N.H. Code Admin. R. Env-Wq 305.20
(See Revision Note at part heading for Env-Wq 305) #10381, eff 8-1-13
Amended by Volume XLI Number 32, Filed August 12, 2021, Proposed by #13241, Effective 7/24/2021, Expires 7/24/2031