Dewatering wells

Dewatering wells. Dewatering wells. The operator of a dewatering well shall manage the discharge water to prevent impacts to surface water or groundwater and shall comply with applicable permitting regulations under s. 283.31 , Stats. Dewatering wells installed for permanent use shall meet all of the requirements of this chapter for non-potable wells and all of the following requirements that are applicable: (1) Approvals. Department approval under s. NR 812.09 (4) of a high-capacity dewatering well shall be obtained prior to installation. (2) Location. Permanent dewatering wells shall be separated from potential contamination sources as specified under s. NR 812.08 . (3) Discharge. The discharge from a dewatering well may not be connected to a potable water supply. (4) Sanitary protection. Temporary dewatering wells shall be protected from the introduction of surface water into the well by providing a watertight cover or cap when unattended and preventing surface drainage to the well. (5) Well screen. Well screens, if used, shall meet the requirements of s. NR 812.11 (11) (d) . (6) Casing. Casing for permanent dewatering wells shall meet the requirements of s. NR 812.11 . The casing of temporary dewatering wells shall be of sufficient material and thickness to withstand the forces imposed on it during installation and pressures exerted on it by the material surrounding it. Casing may be removed and reused in accordance with s. NR 812.26 (5) (k) .