NR 528.06(3)(3) Sampling. If the drainage area does not meet the criteria in sub. (2), the sediment manager shall ensure that the sediment is properly sampled and analyzed, each time, prior to its removal from the storm water management structure. Routine sediment sampling and handling shall be performed in accordance with par. (a). Sediment sample analysis shall be performed in accordance with par. (b). All sediment sampling, handling and analysis shall be performed under the supervision of an environmental professional in accordance with par. (c). The sediment manager may elect to use previous sampling results in lieu of new sediment sampling and analysis if the drainage area has not changed significantly since the sediment was last tested. NR 528.06(3)(a)(a) Sample collection. Representative accumulated sediment samples shall be obtained by meeting all of the following criteria: NR 528.06(3)(a)1.1. Samples shall be obtained using proper handling, storage and delivery procedures required by the laboratory where the samples will be analyzed. NR 528.06(3)(a)2.2. Samples shall be obtained that are representative of the entire volume of sediment to be removed and managed using all of the following: NR 528.06(3)(a)2.a.a. One sample shall be obtained in each surface acre or portion of a surface acre in storm water management structures that are 4 acres or less. This sample may consist of multiple samples composited together to obtain a representative sample. NR 528.06(3)(a)2.b.b. At least one sample per quadrant shall be obtained when the storm water management structure is greater than 4 acres. NR 528.06(3)(a)2.c.c. A greater number of samples shall be obtained when necessary to represent the variability in the sediment due to factors such as sediment transport within the structure, changes in land use in the drainage area and the duration of time during which the sediment has been accumulating. NR 528.06(3)(a)3.3. Samples shall be obtained to provide a volume of sediment adequate to meet the analytical requirements based on the parameters to be analyzed for and the methods of analysis to be performed by the laboratory where the samples will be analyzed. NR 528.06 NoteNote: Additional information on how to perform sediment sampling can be found in existing USEPA Guidance for its Biosolids Rule, CFR Part 503. Please see Methods and Manner of Sampling. http://www.epa.gov/owm/mtb/biosolids/ 503pe/503pe_6.pdf NR 528.06(3)(b)(b) Sample analysis. Samples collected in par. (a) shall be analyzed for all of the constituents in this paragraph. Constituents listed in subds. 3. and 5. shall be analyzed at a laboratory certified or registered in accordance with ch. NR 149: NR 528.06(3)(b)1.1. Percent solids, percent organic matter, electrical conductivity as a saturated paste and pH to provide information on physical characteristics. NR 528.06(3)(b)2.2. Total Kjeldahl nitrogen, total nitrate nitrogen, total phosphorus and total potassium to provide information on nutrient content. Nutrient content shall be expressed as mg/kg on a dry weight basis. NR 528.06(3)(b)3.3. Total arsenic, cadmium, copper, chromium, lead, nickel and zinc to ensure these are not present at elevated levels and as indicator parameters showing the potential presence of other heavy metals and possible need for additional sampling. Results shall be calculated on a dry weight basis. NR 528.06 NoteNote: Effective with the incorporation of this rule, the current pathogen indicator organism is fecal coliform. The maximum allowable density is 1,000 expressed as MPN/gTS (most probable number per gram of total solids on a dry weight basis).
NR 528.06(3)(b)5.5. Additional parameters beyond those required under subds. 1. to 4. if deemed necessary by the sediment manager based on all of the following factors: NR 528.06(3)(b)5.a.a. The present and past land uses in the drainage area served by the storm water management structure such as commercial, multi-family residential, institutional and industrial. NR 528.06(3)(b)5.c.c. Existing conditions or known historical events that may affect the likelihood of safe sediment management. NR 528.06(3)(b)5.d.d. Reported hazardous substance spills under s. 292.11, Stats., in the drainage area since construction or since accumulated sediment was last removed. NR 528.06(3)(b)5.e.e. Sample data indicating significantly elevated levels of contaminants above background concentrations for indicator parameters in subds. 3. and 4. that may affect management in s. NR 528.05. NR 528.06 NoteNote: Additional parameters may include priority pollutants or TCLP constituents.
NR 528.06(3)(c)(c) Oversight. Sample collection and evaluation pursuant to this subsection shall be performed by or under the supervision of an environmental professional. NR 528.06(4)(4) Sediment sample data evaluation. The sediment manager shall ensure that the sediment sample data collected in accordance with sub. (3) (b) 1. to 4. are evaluated by an environmental professional in accordance with sub. (3) (c) and compared with the ceiling levels in s. NR 528.04 (4) Table 2 and, based on the results of the evaluation, that all of the following applicable steps are taken: NR 528.06(4)(a)(a) If any of the ceiling levels in s. NR 528.04 (4) Table 2 are exceeded, the accumulated sediment shall be disposed of in a licensed landfill. NR 528.06(4)(b)(b) If the indicator parameter levels do not exceed the ceiling levels in s. NR 528.04 (4) Table 2, but show elevated levels of contaminants, follow-up sampling shall be performed in accordance with sub. (3) (b) 5., results evaluated, an appropriate end use determined in accordance with sub. (5) and the certification form supplied by the department completed. NR 528.06(4)(c)(c) If the indicator parameter levels do not indicate elevated levels of contaminants, the sediment manager shall ensure that an appropriate end use is determined in accordance with sub. (5) and the certification form supplied by the department is completed. NR 528.06 NoteNote: Technical support resources provided by the department may be referred to for assistance in evaluating the data when addressing elevated levels of contaminants.
NR 528.06(5)(5) End use determination. The sediment manager shall ensure that the appropriate end use of accumulated sediment is determined using all of the following applicable steps: NR 528.06(5)(a)(a) The sediment manager shall complete the appropriate sections of the certification form provided by the department and certify whether or not the drainage area from which the sediment is removed meets the criteria in sub. (2). NR 528.06(5)(b)(b) If all the criteria in sub. (2) are met, the sediment is not required to be sampled and the locational criteria in s. NR 528.04 (1) are not required to be met. NR 528.06(5)(c)(c) If the criterion in sub. (2) (a) is not met, but the criteria in sub. (2) (b) to (d) are met, the sediment shall be sampled pursuant to sub. (3) and the appropriate sections of the certification form provided by the department shall be completed. If the sample data indicates elevated levels of contaminants, additional parameters shall be sampled for in accordance with sub. (3) (b) 5. and the appropriate sections of the certification form provided by the department shall be completed. NR 528.06(5)(d)(d) If the criteria in sub. (2) (b), (c) or (d) are not met, sources of contamination in the drainage area shall be further evaluated, additional sampling shall be considered in accordance with sub. (3) (b) 5. and the appropriate sections of the certification form provided by the department shall be completed. NR 528.06 HistoryHistory: CR 08-111: cr. Register November 2009 No. 647, eff. 12-1-09. NR 528.07NR 528.07 End uses of accumulated sediment. The sediment manager shall ensure that an end use is chosen for the accumulated sediment in accordance with this section. NR 528.07(1)(a)(a) If the sediment manager determines that the accumulated sediment will be disposed of in a licensed landfill, the sediment does not need to be evaluated or sampled under s. NR 528.06. NR 528.07 NoteNote: The landfill operator should be contacted to determine whether the landfill requires the sediment be sampled before it is accepted at the landfill. The sediment may be appropriate for use as daily or final cover in accordance with the landfill’s approved plan of operation.
NR 528.07(1)(b)(b) If any of the ceiling levels in s. NR 528.04 (4) Table 2 are exceeded, the accumulated sediment shall be disposed of in a licensed landfill. NR 528.07(2)(a)(a) The accumulated sediment may be used as general fill in a designed excavation or to improve a site by restoring original contours, filling depressions, improving or stabilizing borrow areas or other disturbed sites. NR 528.07 NoteNote: Examples of uses may include reclamation of abandoned mines, fill in a topographic depression, or other uses that build up or shape the local landscape, mitigate safety or erosion hazards or otherwise improve disturbed sites.
NR 528.07(2)(b)(b) All of the following steps shall be taken to stabilize the site: NR 528.07(2)(b)1.1. Complete placement and preparation of the sediment and any needed topsoil, substitute soil or cover material within 6 months or less of initiating placement in the project year. NR 528.07(2)(b)2.2. Stabilize the cover, topsoil, substitute soil or sediment to prevent erosion due to wind and water, perform all revegetation, mulching or other equivalent stabilization activities prior to the end of the growing season and minimize the exposure of the sediment to the environment by employing one or more of the following measures: NR 528.07(2)(b)2.c.c. Use the accumulated sediment in lieu of or in combination with topsoil, provided it is capable of supporting a vegetative cover. NR 528.07(2)(b)3.3. Revegetate, mulch or otherwise stabilize the sediment within 48 hours of completing the sediment disposal. NR 528.07(3)(3) Confined geotechnical fill. The accumulated sediment may be used as confined geotechnical fill for a variety of uses such as subbase under paved lots and subbase or subgrade for building construction. NR 528.07 NoteNote: Examples of confined geotechnical fill uses may include construction and maintenance of non-department of transportation projects, bridge abutment backfill or other similar uses in which the sediment is covered by an impervious surface such as concrete, asphalt, a building or similar material and thus not exposed to the environment.
NR 528.07(4)(4) Landspreading. The sediment manager shall ensure that the appropriate sections of the certification form provided by the department are completed and the other requirements in s. NR 528.06 are complied with. When landspreading the accumulated sediment, all of the following shall apply: NR 528.07(4)(a)(a) Site evaluation. The site where the accumulated sediment is proposed to be landspread shall be evaluated to ensure that the site is suitable. The site evaluation shall include the soil factors in Table 3 and may include assessment of organic matter content, cation exchange capacity, soil permeability and any other characteristics or factors that would affect the mobility and attenuation of pollutants present in the sediment. The site shall meet the locational criteria in s. NR 528.04 (1) Table 1. NR 528.07(4)(b)(b) Application rate and depth. The application rate of accumulated sediment may not exceed 5 dry tons per acre per year and may not exceed 15 dry tons per acre total loading during the life of the landspreading site. The depth of the application may not exceed 18 inches. NR 528.07(4)(b)1.1. Neither the 5 dry tons per acre per year application rate limitation or the 15 dry tons per acre landspreading site life limit apply when accumulated sediment is used as a component of a marketable soil amendment product pursuant to a contract or used to facilitate nonmetallic mine reclamation as part of an approved reclamation plan. NR 528.07(4)(b)2.2. The 5 dry tons per acre annual limit and the total loading limit of 15 dry tons per acre landspreading life may be adjusted based on soil sampling results, plant tissue monitoring data, landspreading site records or other data. All data necessary to justify the exceedances and extended use shall be collected and evaluated and all data and records shall be maintained in accordance with s. NR 528.08. Table 3
Soil Factors for Site Evaluation
1 Obtain from soil survey, not in-field test
2 Acceptable only when incorporated
3 Acceptable only with increased site management determined by the sediment manager
NR 528.07(4)(c)(c) Nutrient content. The nitrogen and phosphorous content shall be provided to the receiver of the accumulated sediment if the receiver has a nutrient management plan for the acreage where the accumulated sediment will be landspread. NR 528.07(4)(d)(d) Uniform application. The application of accumulated sediment to the land surface shall be uniform when surface applied, as well as during injection or incorporation. NR 528.07(4)(e)(e) Application limitations. Accumulated sediment may not be applied under any of the following situations: NR 528.07(4)(e)2.2. When precipitation capable of producing runoff is forecast within 24 hours of the time of planned application, during or immediately after a precipitation event. NR 528.07(4)(f)(f) Pathogens. In all cases where a pathogen risk exists due to the presence of pathogens, as indicated by evidence of the pathogen or indicator organism and level per s. NR 528.06 (3) (b) 4., the following management practices shall be implemented: NR 528.07(4)(f)1.1. At a minimum, accumulated sediment shall be incorporated into the surface soil to a depth of at least 6 inches by disking or an equivalent process and may include other measures such as signage, restriction on site access or other appropriate measures. NR 528.07(4)(f)2.2. The following waiting periods and access restrictions shall apply beginning on the date when the landspreading activity is completed: NR 528.07(4)(f)2.a.a. When lands are used for the production of forage crops, landspreading shall occur only after harvest has occurred and before any new growth reaches 6 inches. NR 528.07(4)(f)2.b.b. When lands are used for food crops intended for human consumption, a period of at least 14 months shall elapse prior to emergence of the food crop. NR 528.07(4)(f)2.c.c. When lands are used for grazing, at least 30 days shall elapse prior to allowing access to non-dairy animals and at least 60 days shall elapse before allowing access to dairy animals. NR 528.07(4)(f)2.d.d. When lands are subject to public access or used for the harvest of crops grown for fiber or any other forage or crop production, not covered in this subd. 2. a. to c., a period of at least 30 days shall elapse before the site may be accessed or used. NR 528.07(5)(5) Dedicated sediment management site. The end use of landspreading or sediment treatment at a dedicated management site may be chosen if the sites are owned or leased by a municipality or other responsible unit of government. The sediment manager shall assume any additional site management, site monitoring and recordkeeping responsibilities that are necessary to minimize risk to public health, safety and the environment. NR 528.07(5)(a)(a) When sediment is used at a dedicated site, the sediment manager shall ensure that the appropriate portions of the certification form provided by the department are completed. Based on the information obtained in accordance with s. NR 528.06, the sediment manager may choose to use the accumulated sediment for productive purposes including the growth of herbaceous or woody plants for harvest or for treatment to reduce contaminants in the accumulated sediment in accordance with this subsection. NR 528.07(5)(b)(b) All of the following restrictions shall apply to dedicated sediment management sites: NR 528.07(5)(b)2.2. The sediment shall be applied to a depth of 18 inches or less below ground surface. NR 528.07(5)(b)3.3. When the dedicated site is used for sediment treatment so as to attenuate or reduce contaminants in the accumulated sediment, only non-food chain crops or woody plants for harvest or phyto-remediation purposes may be grown. NR 528.07(5)(b)4.4. In cases where the annual application rate or lifetime loading limit in sub. (4) (b) are not exceeded, the provisions of sub. (4) (b) 2. do not apply. In cases where the 5 dry tons per acre annual application rate limitation or the 15 dry tons per acre site life limit are exceeded, the sediment manager shall ensure that sub. (4) (b) 2. is followed as well as take any additional measures or practices that may be necessary to ensure safe long-term site use. These may include practices such as the collection and evaluation of contaminants in soils, plant tissue, other environmental receptors or monitoring devices. The sediment manager shall track the sediment application rates and cumulative site loading totals for contaminants in soil or other receptors as appropriate. The sediment manager shall ensure that any additional measures are implemented that may be necessary such as enhanced site management practices to control run-on and runoff and erosion control practices. At a minimum, the erosion control requirements of s. NR 528.04 (3) shall be met. NR 528.07(5)(b)5.5. Accumulated sediment may be applied on frozen ground and on slopes greater than 6% or more provided the sediment management is performed in compliance with s. NR 528.04 (3) and adequate and permanent run-on and runoff controls are in place and maintained. NR 528.07(5)(b)6.6. Sediment may not be applied when precipitation capable of producing runoff is forecast within 24 hours of the time of planned application, or during or immediately after a precipitation event. NR 528.07(5)(b)7.7. In all cases where a pathogen risk exists due to the presence of pathogens, as indicated by evidence of the pathogen or indicator organism and level per s. NR 528.06 (3) (b) 4., then the waiting periods in sub. (4) (f) apply. NR 528.07(5)(b)8.8. In all cases where a pathogen risk exists due to the presence of pathogens, no grazing is allowed and no human food chain crops may be grown where the sediment has been applied.
