Section NR 811.15 - Special requirements for collector wells(1) Continuous disinfection and adequate detention time shall be provided for radial collectors.(2) Department approval of the well site shall be obtained in accordance with s. NR 811.09(4) (j) 1. prior to conducting any intensive investigation at the well site.(3) The area around the collector laterals shall be under the control of the supplier of water for a distance approved by the department.(4) The location of all caisson construction joints and porthole assemblies shall be indicated on the plans.(5) The caisson wall shall be constructed of reinforced concrete as provided in s. NR 811.12(8). An approved water stop shall be installed between each lift. A final water stop or gasket shall be installed between the base of the pumphouse floor and the top of the caisson. All water used in the construction of the collector shall be from a known bacteriologically safe and uncontaminated source.(6) Provisions shall be made to assure minimum vertical rise of the caisson due to potential buoyancy concerns.(7) The top of the caisson shall be covered with a watertight concrete floor, and all openings in the floor shall be curbed and have overlapping covers to protect against the entrance of foreign material. The caisson shall be vented through a vent pipe installed through the floor in accordance with the requirements of s. NR 811.64(8).(8) Pump discharge pipes may not be placed through caisson walls.(9) Pumphouses constructed on top of the caisson shall meet the construction requirements of subchs. IV and V. The floor of any pumphouse shall be supported by concrete walls that have frost footings.Wis. Admin. Code Department of Natural Resources NR 811.15
CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.