Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Subchapter XIII - Aquifer Storage Recovery › Section NR 811.91 - ASR system pilot studies

Current through June 24, 2024
(1) Department
				  approval is required prior to conducting any ASR system pilot study.
(2) Only a municipal water system may perform
				  an ASR system pilot study.
(3) A
				  request to conduct an ASR system pilot study shall be submitted to the
				  department in writing. The request shall identify the location of each existing
				  well that is being considered for use as an ASR well within the proposed ASR
				  system, the location of any new well that is anticipated to be constructed for
				  use as an ASR well within the proposed ASR system and any additional wells that
				  are to be used or constructed as part of the ASR system pilot study.
(4) Each request to conduct an ASR system
				  pilot study shall contain all of the following:
(a) A preliminary hydrogeologic report that
				  describes the methods and results of any hydrologic investigation, aquifer
				  testing, hydrogeologic modeling or geochemical modeling performed to identify
				  the location of the proposed ASR system well sites. The preliminary
				  hydrogeologic report shall identify the location of each existing public or
				  private water well and each potential source of groundwater contamination that
				  is located within 1200 feet of the outer perimeter of the displacement zone
				  that is calculated to be established around each of the proposed ASR wells
				  within the proposed ASR system. The report shall also identify the well
				  selected for further evaluation during the ASR well pilot test, identify the
				  dimensions of the displacement zone that will be created around the designated
				  test well, and describe the current and anticipated groundwater flow patterns
				  found in the vicinity of the designated test well.
(b) A preliminary engineering report that
				  provides an analysis of the technical feasibility for developing each of the
				  potential ASR wells identified for the proposed ASR system and estimates the
				  probable percentage of treated drinking water that would be recovered from each
				  of the potential ASR wells during an ASR cycle.
(c) Plans and specifications for any well
				  equipment, pumping equipment, appurtenances or piping that is to be constructed
				  or altered in order to complete the proposed ASR system pilot study.
(d) A description of all operating procedures
				  to be followed during the ASR well pilot study. This description shall contain
				  details including the maximum volume of water to be placed underground, the
				  flow rate and pressure of underground injection, the expected water storage
				  period, anticipated water retrieval rates, and methods proposed for disposing
				  of the water recovered during the ASR system pilot study.
(e) A description of all performance and
				  compliance monitoring procedures to be followed during the ASR system pilot
				  study. This description shall include a listing of the sampling locations,
				  methods and schedules that will be used to ensure that the aquifer storage
				  recovery well remains in compliance with the performance requirements set forth
				  in s.
				  NR
				  811.88.
(f) Plans and specifications for each
				  monitoring well proposed as part of the ASR system pilot study. A minimum of
				  one monitoring well is required as part of the ASR system pilot study. The
				  department may require additional monitoring wells should the proposed ASR
				  system encompass multiple or otherwise unique geologic formations. The
				  department may also waive the monitoring well requirement if water quality data
				  from other ASR system pilot studies conducted in similar geologic conditions is
				  submitted as part of the ASR system pilot study request and is determined to be
				  applicable by the department.