Section NR 510.05 - Specific geotechnical informationThe applicant shall perform field investigations to define the subsurface soils, depth to bedrock, type of bedrock, depth to groundwater, and groundwater flow direction at the proposed landfill's location. The results of this investigation shall be described in the narrative section of report. All raw data collected for borings, well construction and borehole abandonment shall be submitted on forms in accordance with s. NR 507.14(5). All raw data for laboratory tests and water level measurements shall be included in the report appendix.
(1) BORINGS. Borings installed to investigate the site specific geology shall be: (a) Extended a minimum of 25 feet below the anticipated sub-base grade. If the boring is located outside the anticipated limits of filling, the applicable sub-base grade is the elevation of the bottom of the anticipated liner system nearest to the borehole.(b) Located in or within 300 feet of the anticipated limits of filling.(c) Logged and samples shall be collected and retained in accordance with s. NR 507.05(2) and (3).(d) Abandoned in accordance with ss. NR 141.25 and if not 507.08 converted to wells.(2) WELLS. Based on existing information, observation wells installed to investigate the site-specific hydrogeology shall be: (a) Constructed so that the water table intersects the well screen at all times during the year.(b) Located no more than 300 feet from the anticipated limits of filling.(c) Designed, installed, developed and documented in accordance with ch. NR 141 and ss. NR 507.06, 507.07 and 507.14. All requirements contained in s. NR 508.10 also apply. Alternative methods of well design and installation which achieve comparable results shall be approved by the department prior to well construction. Note: NR 508.10 was repealed eff. 7-1-96.
(3) FIELD DIRECTION. A professional geologist or qualified technician who is directly supervised by a professional geologist shall observe and direct the drilling of all borings and the installation, development and abandonment of all wells. The professional geologist or qualified technician who is directly supervised by a professional geologist shall also visually describe and classify all geologic samples.(4) LABORATORY AND FIELD ANALYSES. Laboratory and field analyses conducted to identify the specific geologic and hydrogeologic conditions at the proposed landfill's location shall: (a) Include testing a minimum of one representative sample from each major soil unit encountered. Each representative sample shall be analyzed for grain-size distribution using mechanical and hydrometer methods and Atterberg limits as appropriate for the particular type of material and be classified according to the unified soil classification system. Note: A major soil unit is defined in s. NR 500.03(138).
(b) All available groundwater or surface water quality data which have been obtained from sampling at the proposed landfill's location shall be submitted in the report. Any environmental monitoring data included in the report shall be submitted on department forms or on diskette.Wis. Admin. Code Department of Natural Resources NR 510.05
Cr. Register, January, 1988, No. 385, eff. 2-6-88; r. and recr. Register, June, 1996, No. 486, eff. 7-1-96.The department recommends that any site-specific geotechnical investigation for an initial site report or a pre-feasibility report not be initiated prior to receiving the department's initial site inspection evaluation of the proposed property. The department also recommends that any follow up studies and evaluations requested by the department in its initial site inspection evaluation to determine compliance with the locational criteria and performance standards of s. NR 504.04 be completed to the degree possible prior to submitting an initial site report or a pre-feasibility report. For example: If the department requests an archeological investigation or an endangered resources study to be completed, such information should be included in the initial site report or a pre-feasibility report. However, if the proposed landfill will have an impact on a wetland, the practicable alternative analysis required by ch. NR 103 should be submitted with the initial site report or pre-feasibility report, but the identification of the wetland functional values and the significance of the potential adverse impact upon those functional values may be submitted with either the initial site report, the pre-feasibility report or the feasibility report.