Section NR 507.19 - Detection groundwater monitoring Owners or operators of solid waste disposal facilities shall implement a detection groundwater monitoring program in accordance with this section and the approved plan of operation unless otherwise approved in writing by the department. If assessment monitoring is a required response in accordance with s. NR 508.05, the owner or operator shall continue detection monitoring at all wells without interruption unless the department approves otherwise. The department may require the owner or operator of a solid waste disposal facility to sample water supply wells in accordance with s. NR 507.20.
(1) NUMBER OF REQUIRED MONITORING POINTS. The number of required monitoring points and the proposed detection monitoring program shall be as approved in writing by the department based on the facility size, waste types, facility design and hydrogeologic and geologic setting of the facility. The detection monitoring program shall be adequate to determine upgradient and downgradient water quality, horizontal and vertical gradients and to detect any impacts from the facility on groundwater quality.(2) SAMPLING FREQUENCY. The minimum sampling frequency for detection groundwater monitoring shall be appropriate for the particular waste types accepted at the landfill and are listed in ch. NR 507 Appendix I, Tables 1, 1A, and 2. The department may approve other sampling frequencies in writing.(3) SAMPLING PARAMETERS. The sampling parameters required for detection groundwater monitoring shall be appropriate for the particular waste types accepted at the landfill. Chapter NR 507 Appendix I, Tables 1, 1A, and 2 indicate which sampling parameters are appropriate for each waste type. Chapter NR 507 Appendix III lists the volatile organic compounds to be sampled when a VOC scan is required. The department may approve other sampling parameters in writing. If 10 percent or more of a municipal solid waste landfill's total design capacity consists of a waste type listed in ch. NR 507 Appendix I, Table 2, the detection monitoring program shall include the additional parameters listed in ch. NR 507 Appendix I, Table 2 for that waste type. The owner or operator may demonstrate that a parameter is not present in the waste or leachate. The department shall review such a demonstration and take the appropriate action.(4) PREVENTIVE ACTION LIMITS. Preventive action limits for inorganic detection monitoring parameters shall be calculated in accordance with s. NR 507.27.Wis. Admin. Code Department of Natural Resources § NR 507.19
Cr. Register, June, 1996, No. 486, eff. 7-1-96; corrections in (2), (3) made under s. 13.92(4) (b) 7, Stats., Register April 2013 No. 688.Amended by, CR 21-076: am. (2), (3) Register July 2022 No. 799, eff. 8-1-22; correction in (3) made under s. 35.17, Stats., Register July 2022 No. 799, eff. 8/1/2022.