(e) BMPs that are no longer necessary for erosion and sediment control shall be removed by the responsible party.
S. 08* PERFORMANCE STANDARDS FOR CONSTRUCTION SITES OF ONE ACRE OR MORE.
(1) RESPONSIBLE PARTY. The responsible party shall comply with this section and implement the erosion and sediment control plan developed in accordance with S. 10*.
(2) EROSION AND SEDIMENT CONTROL PLAN. A written site-specific erosion and sediment control plan shall be developed in accordance with S. 10* of this ordinance and implemented for each construction site.
Note to Users: The written plan may be that specified within s. NR 216.46, Wis. Adm. Code, the erosion and sediment control portion of a construction plan or other plan. (3) EROSION AND OTHER POLLUTANT CONTROL REQUIREMENTS. The erosion and sediment control plan required under sub. (2) shall include all of the following:
(a) EROSION AND SEDIMENT CONTROL PRACTICES. Erosion and sediment control practices at each site where land disturbing construction activity is to occur shall be used to prevent or reduce all of the following:
1. The deposition of soil from being tracked onto streets by vehicles.
2. The discharge of sediment from disturbed areas into on-site storm water inlets.
3. The discharge of sediment from disturbed areas into adjacent waters of the state.
4. The discharge of sediment from drainage ways that flow off the site.
5. The discharge of sediment by dewatering activities.
6. The discharge of sediment eroding from soil stockpiles existing for more than 7 days.
7. The discharge of sediment from erosive flows at outlets and in downstream channels.
8. The transport by runoff into waters of the state of chemicals, cement, and other building compounds and materials on the construction site during the construction period. However, projects that require the placement of these materials in waters of the state, such as constructing bridge footings or BMP installations, are not prohibited by this subdivision.
9. The transport by runoff into waters of the state of untreated wash water from vehicle and wheel washing.
(b) SEDIMENT PERFORMANCE STANDARDS. In addition to the erosion and sediment control practices under par. (a), the following erosion and sediment control practices shall be employed:
1. BMPs that, by design, discharge no more than 5 tons per acre per year, or to the maximum extent practicable, of the sediment load carried in runoff from initial grading to final stabilization.
2. No person shall be required to employ more BMPs than are needed to meet a performance standard in order to comply with maximum extent practicable. Erosion and sediment control BMPs may be combined to meet the requirements of this paragraph. Credit may be given toward meeting the sediment performance standard of this paragraph for limiting the duration or area, or both, of land disturbing construction activity, or for other appropriate mechanisms.
3. Notwithstanding subd. 1., if BMPs cannot be designed and implemented to meet the sediment performance standard, the erosion and sediment control plan shall include a written, site-specific explanation of why the sediment performance standard cannot be met and how the sediment load will be reduced to the maximum extent practicable.
(c) PREVENTIVE MEASURES. The erosion and sediment control plan shall incorporate all of the following:
1. Maintenance of existing vegetation, especially adjacent to surface waters whenever possible.
2. Minimization of soil compaction and preservation of topsoil.
3. Minimization of land disturbing construction activity on slopes of 20 percent or more.
4. Development of spill prevention and response procedures.
(d) LOCATION. The BMPs used to comply with this section shall be located so that treatment occurs before runoff enters waters of the state.
Note to Users: While regional treatment facilities are appropriate for control of post-construction pollutants, they should not be used for construction site sediment removal.
(4) IMPLEMENTATION. The BMPs used to comply with this section shall be implemented as follows:
(a) Erosion and sediment control practices shall be constructed or installed before land disturbing construction activities begin in accordance with the erosion and sediment control plan developed in S. 08* (2).
(b) Erosion and sediment control practices shall be maintained until final stabilization.
(c) Final stabilization activity shall commence when land disturbing activities cease and final grade has been reached on any portion of the site.
(d) Temporary stabilization activity shall commence when land disturbing activities have temporarily ceased and will not resume for a period exceeding 14 calendar days.
(e) BMPs that are no longer necessary for erosion and sediment control shall be removed by the responsible party.
S. 09* PERMITTING REQUIREMENTS, PROCEDURES, AND FEES.
(1) PERMIT REQUIRED. No responsible party may commence a land disturbing construction activity subject to this ordinance without receiving prior approval of an erosion and sediment control plan for the site and a permit from the [administering authority].
(2) PERMIT APPLICATION AND FEES. The responsible party that will undertake a land disturbing construction activity subject to this ordinance shall submit an application for a permit and an erosion and sediment control plan that meets the requirements of S. 10*, and shall pay an application fee to the [administering authority] in the amount specified in S. 11*. By submitting an application, the applicant is authorizing the [administering authority] to enter the site to obtain information required for the review of the erosion and sediment control plan.
(3) PERMIT APPLICATION REVIEW AND APPROVAL. The [administering authority] shall review any permit application that is submitted with an erosion and sediment control plan and the required fee. All of the following approval procedure shall be used:
(a) Within [number] business days of the receipt of a complete permit application, as required by sub. (2), the [administering authority] shall inform the applicant whether the application and erosion and sediment control plan are approved or disapproved based on the requirements of this ordinance.
(b) If the permit application and erosion and sediment control plan are approved, the [administering authority] shall issue the permit.
(c) If the permit application or erosion and sediment control plan is disapproved, the [administering authority] shall state in writing the reasons for disapproval.
(d) The [administering authority] may request additional information from the applicant. If additional information is submitted, the [administering authority] shall have [number] business days from the date the additional information is received to inform the applicant that the erosion and sediment control plan is either approved or disapproved.
(e) Failure by the [administering authority] to inform the permit applicant of a decision within [number] business days of a required submittal shall be deemed to mean approval of the submittal and the applicant may proceed as if a permit had been issued.
(4) SURETY BOND. As a condition of approval and issuance of the permit, the [administering authority] may require the applicant to deposit a surety bond or irrevocable letter of credit to guarantee a good faith execution of the approved erosion and sediment control plan and any permit conditions.
(5) PERMIT REQUIREMENTS. All permits shall require the responsible party to do all of the following:
(a) Notify the [administering authority] within 48 hours of commencing any land disturbing construction activity.
(b) Notify the [administering authority] of completion of any BMPs within 14 days after their installation.
(c) Obtain permission in writing from the [administering authority] prior to any modification pursuant to S. 10* (3) of the erosion and sediment control plan.
(d) Install all BMPs as identified in the approved erosion and sediment control plan.
(e) Maintain all road drainage systems, storm water drainage systems, BMPs, and other facilities identified in the erosion and sediment control plan.
(f) Repair any siltation or erosion damage to adjoining surfaces and drainage ways resulting from land disturbing construction activities and document repairs in a site inspection log.
(g) Inspect the BMPs within 24 hours after each rain of 0.5 inches or more that results in runoff during active construction periods and at least once each week. Make needed repairs and install additional BMPs as necessary, and document these activities in an inspection log that also includes the date of inspection, the name of the person conducting the inspection, and a description of the present phase of the construction at the site.
(h) Allow the [administering authority] to enter the site for the purpose of inspecting compliance with the erosion and sediment control plan or for performing any work necessary to bring the site into compliance with the erosion and sediment control plan.
(i) Keep a copy of the erosion and sediment control plan at the construction site.
(6) PERMIT CONDITIONS. Permits issued under this section may include conditions established by [administering authority] in addition to the requirements set forth in sub. (5), when needed to assure compliance with the performance standards in S. 07* or S. 08*.
(7) PERMIT DURATION. Permits issued under this section shall be valid for a period of 180 days, or the length of the building permit or other construction authorizations, whichever is longer, from the date of issuance. The [administering authority] may grant one or more extensions not to exceed 180 days cumulatively. The [administering authority] may require additional BMPs as a condition of an extension if they are necessary to meet the requirements of this ordinance.
(8) MAINTENANCE. The responsible party throughout the duration of the construction activities shall maintain all BMPs necessary to meet the requirements of this ordinance until the site has undergone final stabilization.
S. 10* EROSION AND SEDIMENT CONTROL PLAN, STATEMENT, AND AMENDMENTS.
(1) EROSION AND SEDIMENT CONTROL PLAN STATEMENT. For each construction site identified under S. 04 (1)(c), an erosion and sediment control plan statement shall be prepared. This statement shall be submitted to the [administering authority]. The erosion and sediment control plan statement shall briefly describe the site, the development schedule, and the BMPs that will be used to meet the requirements of the ordinance. A site map shall also accompany the erosion and sediment control plan statement.
(2) EROSION AND SEDIMENT CONTROL PLAN REQUIREMENTS.
(a) An erosion and sediment control plan shall be prepared and submitted to the [administering authority].
(b) The erosion and sediment control plan shall be designed to meet the performance standards in S. 07*, S. 08*, and other requirements of this ordinance.
(c) The erosion and sediment control plan shall address pollution caused by soil erosion and sedimentation during construction and up to final stabilization of the site. The erosion and sediment control plan shall include, at a minimum, all of the following items:
1. Names and addresses of the owner or developer of the site, and of any consulting firm retained by the applicant, together with the name of the applicant’s principal contact at such firm. The application shall also include start and end dates for construction.
2. Description of the construction site and the nature of the land disturbing construction activity, including representation of the limits of land disturbance on a United States Geological Survey 7.5 minute series topographic map.
3. Description of the intended sequence of major land disturbing construction activities for major portions of the construction site, including stripping and clearing; rough grading; construction of utilities, infrastructure, and buildings; and final grading and landscaping. Sequencing shall identify the expected date on which clearing will begin, the estimated duration of exposure of cleared areas, areas of clearing, installation of temporary erosion and sediment control measures, and establishment of permanent vegetation.
4. Estimates of the total area of the construction site and the total area of the construction site that is expected to be disturbed by land disturbing construction activities.
5. Calculations to show the compliance with the performance standard in S. 08 (3)(b)1.
6. Existing data describing the surface soil as well as subsoils.
7. Depth to groundwater, as indicated by Natural Resources Conservation Service soil information when available.
8. Name of the immediate named receiving water from the United States Geological Survey 7.5 minute series topographic maps.
(d) The erosion and sediment control plan shall include a site map. The site map shall include all of the following items and shall be at a scale not greater than 100 feet per inch and at a contour interval not to exceed five feet:
1. Existing topography, vegetative cover, natural and engineered drainage systems, roads, and surface waters. Lakes, streams, wetlands, channels, ditches, and other watercourses on and immediately adjacent to the site shall be shown. Any identified 100-year flood plains, flood fringes, and floodways shall also be shown.
2. Boundaries of the construction site.
3. Drainage patterns and approximate slopes anticipated after major grading activities.
4. Areas of soil disturbance.
5. Location of major structural and non-structural controls identified in the erosion and sediment control plan.
6. Location of areas where stabilization BMPs will be employed.
7. Areas that will be vegetated following land disturbing construction activities.
8. Areas and locations of wetland on the construction site, and locations where storm water is discharged to a surface water or wetland within one-quarter mile downstream of the construction site.
9. Areas used for infiltration of post-construction storm water runoff.
10. An alphanumeric or equivalent grid overlying the entire construction site map.
(e) Each erosion and sediment control plan shall include a description of appropriate control BMPs that will be installed and maintained at the construction site to prevent pollutants from reaching waters of the state. The erosion and sediment control plan shall clearly describe the appropriate erosion and sediment control BMPs for each major land disturbing construction activity and the timing during the period of land disturbing construction activity that the erosion and sediment control BMPs will be implemented. The description of erosion and sediment control BMPs shall include, when appropriate, all of the following minimum requirements:
1. Description of interim and permanent stabilization practices, including a BMP implementation schedule. The erosion and sediment control plan shall ensure that existing vegetation is preserved when attainable and that disturbed portions of the site are stabilized.
2. Description of structural practices to divert flow away from exposed soils, store flows, or otherwise limit runoff and the discharge of pollutants from the site. Unless otherwise specifically approved in writing by the [administering authority], structural measures shall be installed on upland soils.
3. Management of overland flow at all areas of the construction site, unless otherwise controlled by outfall controls.
4. Trapping of sediment in channelized flow.
5. Staging land disturbing construction activities to limit exposed soil areas subject to erosion.
6. Protection of downslope drainage inlets where they occur.
7. Minimization of tracking at all vehicle and equipment entry and exit locations of the construction site.
