NR 510.05(1)(a) (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.
NR 510.05(1)(b) (b) Located in or within 300 feet of the anticipated limits of filling.
NR 510.05(1)(c) (c) Logged and samples shall be collected and retained in accordance with s. NR 507.05 (2) and (3).
NR 510.05(1)(d) (d) Abandoned in accordance with ss. NR 141.25 and 507.08 if not converted to wells.
NR 510.05(2) (2)Wells. Based on existing information, observation wells installed to investigate the site-specific hydrogeology shall be:
NR 510.05(2)(a) (a) Constructed so that the water table intersects the well screen at all times during the year.
NR 510.05(2)(b) (b) Located no more than 300 feet from the anticipated limits of filling.
NR 510.05(2)(c) (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.
NR 510.05 Note Note: NR 508.10 was repealed eff. 7-1-96.
NR 510.05(3) (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.
NR 510.05(4) (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:
NR 510.05(4)(a) (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.
NR 510.05 Note Note: A major soil unit is defined in s. NR 500.03 (138).
NR 510.05(4)(b) (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.
NR 510.05 Note Note: 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.
NR 510.05 History History: Cr. Register, January, 1988, No. 385, eff. 2-6-88; r. and recr. Register, June, 1996, No. 486, eff. 7-1-96.
NR 510.06 NR 510.06 Data presentation. The results of any subsurface investigations shall be presented on 24 x 36 plan sheets unless an alternative size is approved by the department, as follows:
NR 510.06(1) (1)Topographic map. A topographic map of the area within 1,500 feet of the anticipated limits of filling shall be submitted showing the anticipated limits of filling, property boundaries, homes, buildings, cultural features, water supply wells, and the location of soil borings and wells for the proposed landfill. For a proposed contiguous, horizontal or vertical expansion of an existing landfill the topographic map shall also include the location of all borings and wells for the existing landfill. The base map may consist of an enlarged 7.5 minute USGS map or other map having a minimum scale of 1 = 500 with contour intervals sufficient to show relief.
NR 510.06(2) (2)Geologic cross-sections. Geologic cross-sections shall be constructed and submitted if more than 4 borings have been installed. For a proposed contiguous, horizontal or vertical expansion of an existing landfill, all borings and wells for the existing landfill shall be included on the geologic cross-sections. Where more than one interpretation can be reasonably made when evaluating heterogeneities within the unconsolidated deposits, assume that the heterogeneities are continuous. The following information shall be presented on the geologic cross-sections:
NR 510.06(2)(a) (a) A dashed line or question mark for inferred boundaries, a number or symbol to label major soil units and a key containing a description of the soil units.
NR 510.06(2)(b) (b) The anticipated sub-base, base and final grades for the proposed facility.
NR 510.06(2)(c) (c) All boring logs, the USCS classifications and the geologic origin for each major soil unit. The results of all lab tests shall be presented beside the boring.
NR 510.06(2)(d) (d) Well construction details shown to scale including the well screen and filter pack length, the location of the upper and lower seals, and stabilized water level elevations measured on the same day. When 2 or more water table observation wells are presented on a cross-section, a line representing the water table elevation shall be drawn on the cross-section. The date the measurements were taken shall be specified in the key.
NR 510.06(3) (3)Water table map. A water table contour map shall be submitted when 4 or more observation wells have been installed to define the site-specific hydrogeology. The map shall be based on stabilized water levels recorded on the same day from the observation wells installed at the proposed landfill's location and show the wells and the measured water level at each well. For a proposed contiguous, horizontal or vertical expansion of an existing landfill, the water table contour map shall include the observation wells and measured water table elevations at each well for the existing landfill. The topographic map shall be used as a base map. If more than one set of water levels has been taken, the water table contours shall be based on the set of data which indicates the highest water table. Any observed variations in flow direction shall be discussed in the narrative of the report. Inferred contours made beyond the extent of the well field shall be shown with dashed lines.
NR 510.06 History History: Cr. Register, January, 1988, No. 385, eff. 2-6-88; renum. from NR 510.09; am. (intro.), (1), (2) (intro.), (a), (c), (d), (3), Register, June, 1996, No. 486, eff. 7-1-96.
NR 510.07 NR 510.07 Data analysis and design recommendations. The report shall include an analysis of the results from the regional geotechnical information and land use information contained in the initial site report and from the subsurface investigations; give preliminary conclusions and recommendations on landfill development; and include a discussion of the following items:
NR 510.07(1) (1)Locational criteria and performance standards. The potential for the proposed landfill to meet the locational criteria and performance standards in s. NR 504.04.
NR 510.07(2) (2)Factors affecting development. A discussion of the geologic environment including those factors which may affect the development, design or operation of the proposed landfill.
NR 510.07(3) (3)Existing facility performance. For a proposed contiguous, horizontal or vertical expansion of an existing landfill, the compliance status and performance of the existing landfill shall be evaluated.
NR 510.07 History History: Cr. Register, January, 1988, No. 385, eff. 2-6-88; renum. from NR 510.10 and am.(intro.), (2), r. (3) and (4), cr. (3), Register, June, 1996, No. 486, eff. 7-1-96.
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.