A. 
The intent of this article is to require erosion control practices that will reduce the amount of sediment and other pollutants leaving construction sites during land development and land disturbance activities.
B. 
This article applies to land disturbing and land developing activities on lands within the boundaries and jurisdiction of Green Lake County except UDC application. All County, state and federally funded or conducted construction is exempt from this chapter.
All control measures required to comply with this chapter shall meet the design criteria, standards and specifications for the control measures based on Wisconsin Best Management Practices Handbook accepted design criteria, standards and specifications identified by the Green Lake County Land Conservation Department.
All sedimentation basins and other control measures necessary to meet the requirements of this chapter shall be maintained by the applicant or subsequent landowner during the period of land disturbance and land development of the site in a satisfactory manner to ensure adequate performance and to prevent nuisance conditions.
A. 
Applicability. This section applies to the following sites of land development or land disturbing activities:
(1) 
Those requiring a subdivision plat approval;
(2) 
Those requiring a certified survey approval;
(3) 
Those involving grading, removal of protective ground cover or vegetation, excavation, land filling or other land disturbing activity affecting a surface area of 2,000 square feet or on a slope greater than 12%;
(4) 
Those involving excavation or filling or a combination of excavation and filling affecting 400 cubic yards or more of dirt, sand or other excavation or fill material;
(5) 
Those involving street, highway, road, or bridge construction, enlargement, relocation or reconstruction; and
(6) 
Those involving the laying, repairing, replacing or enlarging of an underground pipe or facility for a distance of 300 feet or more.
B. 
Erosion and other pollutant control requirements. The following requirements shall be met on all sites described in Subsection A:
(1) 
Site dewatering. Water pumped from the site that is not visually clear shall be treated by temporary sedimentation basins, grit chambers, sand filters, upflow chambers, hydro-cyclones, swirl concentrators, or other appropriate controls.
(2) 
Waste and material disposal. All waste and unused building materials (including garbage, debris, cleaning wastes, wastewater, toxic materials, or hazardous materials) shall be properly disposed and not allowed to be carried by runoff into a receiving channel or storm sewer system.
(3) 
Tracking. Each site shall have graveled roads, access drives and parking areas of sufficient width and length to prevent sediment from being tracked onto public or private roadways. Any sediment reaching a public or private road shall be removed by street cleaning (not flushing) before the end of each workday.
(4) 
Drain inlet protection. All on-site storm drain inlets shall be protected with a straw bale, filter fabric, or equivalent barrier meeting accepted design criteria, standards and specifications.
(5) 
Site erosion control. The following criteria [Subsection B(5)(a) through (d)] apply only to land development or land disturbing activities that result in runoff leaving the site.
(a) 
Channelized runoff from adjacent areas passing through the site shall be diverted around disturbed areas, if practical. Otherwise, the channel shall be protected as described below in Subsection B(5)(c)[3]. Sheetflow runoff from adjacent areas greater than 10,000 square feet in area shall also be diverted around disturbed areas, unless shown to have resultant runoff velocities of less than 0.5 foot per second across the disturbed area for the set of one-year design storms. Diverted runoff shall be conveyed in a manner that will not erode the conveyance and receiving channels. (Note: Natural Resources Conservation Service guidelines for allowable velocities in different types of channels should be followed.)
(b) 
All activities on the site shall be conducted in a logical sequence to minimize the area of bare soil exposed at any one time.
(c) 
Runoff from the entire disturbed area on the site shall be controlled by meeting either Subsection B(5)(c)[1] and [2] or [1] and [3]:
[1] 
All disturbed ground left inactive for 30 or more days shall be stabilized by seeding, sodding or by mulching or covering, or other equivalent control measure.
[2] 
For sites with more than five acres disturbed at one time, or if a channel originates in the disturbed area, one or more sedimentation basins shall be constructed. Each sedimentation basin shall have a surface area of at least 1% of the area draining to the basin and at least three feet of depth and constructed in accordance with accepted design specifications. Sediment shall be removed to maintain a depth of three feet. The basin shall be designed to trap sediment greater than 15 microns in size, based on the set of one-year design storms having durations from 0.5 to 24 hours. The basin discharge rate shall also be sufficiently low as to not cause erosion along the discharge channel or the receiving water.
[3] 
For sites with less than five acres disturbed at one time, filter fences, straw bales, or equivalent control measures shall be placed along downslope perimeters of the site. If a channel or area of concentrated runoff passed through the site, filter fences shall be placed along the channel edges to reduce sediment reaching the channel.
(d) 
Any soil or dirt storage piles containing more than 10 cubic yards of material should not be located with a downslope drainage length of less than 25 feet to a roadway or drainage channel. For stockpiles remaining for more than 30 days, they shall be stabilized by placing straw bales or filter fence barriers around the downstream side of the piles. Stockpiles greater than 1,000 cubic yards shall also be stabilized by mulching, vegetative cover, tarps or other means.
(e) 
During in-street utility repairs, storm sewer inlets must be protected with straw bales or other appropriate filter barriers prior to the start of construction. Utility repair stockpiles, if exposed more than seven days, shall be covered with tarps or suitable alternative controls.
No landowner or land user may commence a land disturbance or land development activity subject to this chapter without receiving prior approval of a control plan for the site and a permit from Green Lake County. At least one landowner or land user controlling or using the site and desiring to undertake a land disturbing or land developing activity subject to this chapter shall submit an application for a permit and a control plan and pay an application fee to Green Lake County. By submitting an application, the applicant is authorizing Green Lake County to enter the site to obtain information required for the review of the control plan.
A. 
Content of control plan statement for land disturbing activities covering less than one acre but meeting the applicability requirements stated in § 284-15A. An erosion control plan statement (with simple map) shall be submitted to briefly describe the site and erosion controls (including the site development schedule) that will be used to meet the requirements of this chapter.
B. 
Content of the control plan for land disturbing activities covering more than one acre.
(1) 
Existing site map. A map of existing site conditions on a scale of at least one inch equals 100 feet showing the site and immediately adjacent areas:
(a) 
Site boundaries and adjacent lands which accurately identify site location;
(b) 
Lakes, streams, wetlands, channels, ditches and other watercourses on and immediately adjacent to the site;
(c) 
One-hundred-year floodplains, flood-fringes and floodways;
(d) 
Location of the predominant soil types;
(e) 
Vegetative cover;
(f) 
Location and dimensions of stormwater drainage systems and natural drainage patterns on and immediately adjacent to the site;
(g) 
Locations and dimensions of utilities, structures, roads, highways, and paving; and
(h) 
Site topography at a contour interval not to exceed five feet.
(2) 
Plan of final site conditions. A plan of final site conditions on the same scale as the existing site map showing the site changes.
(3) 
Site construction plan. A site plan including:
(a) 
Locations and dimensions of all proposed land disturbing activities;
(b) 
Locations and dimensions of all temporary soil or dirt stockpiles;
(c) 
Locations and dimensions of all construction site management control measures necessary to meet the requirements of this chapter;
(d) 
Schedule of anticipated starting and completion date of each land disturbing or land developing activity, including the installation of construction site control measures needed to meet the requirements of this chapter; and
(e) 
Provisions for maintenance of the construction site control measures during construction.
C. 
Review of control plan. Within 10 business days of receipt of the application, control plan (or control plan statement) and fee, the Land Conservation Department shall review the application and control plan to determine if the requirements of this chapter are met. The Land Conservation Department may request comments from other departments or agencies. If the requirements of this chapter are met, the Land Conservation Department shall approve the plan and inform the Land Use Planning and Zoning Department that the minimum requirements of this chapter have been satisfied and a permit may be issued. If the conditions are not met, the Land Conservation Department shall inform the applicant in writing and may either require needed information or disapprove the plan. Within 10 business days of receipt of needed information, the Land Conservation Department shall again determine if the plan meets the requirements of this chapter. If the plan is disapproved, the Land Conservation Department shall inform the applicant in writing of the reasons for the disapproval.
D. 
Permits.
(1) 
Duration. Permits 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. Green Lake County may extend the period one or more times for up to an additional 180 days. Green Lake County may require additional control measures as a condition of the extension if they are necessary to meet the intent of this chapter.
(2) 
Financial guarantee. As a condition of approval and issuance of the permit, Green Lake County may require the applicant to deposit a surety bond or irrevocable letter of credit to guarantee a good faith execution of the approved control plan and any permit conditions. See § 284-17 for specific conditions.
(3) 
Permit conditions. All permits shall require the permittee to:
(a) 
Notify the Land Conservation Department within three business days of commencing any land disturbing activity;
(b) 
Notify the completion of any control measures within three business days after their installation;
(c) 
Obtain permission in writing from the Land Conservation Department prior to making major changes to modify the control plan;
(d) 
Install all control measures as identified in the approved control plan;
(e) 
Maintain all road drainage systems, stormwater drainage systems, control measures and other facilities identified in the control plan;
(f) 
Repair any siltation or erosion damage to adjoining surfaces and drainageways resulting from land developing or disturbing activities;
(g) 
Inspect the construction control measures after each rain of 0.5 inch or more and at least once each week and make needed repairs;
(h) 
Allow the Land Conservation Department to enter the site for the purpose of inspecting compliance with the control plan or for performing any work necessary to bring the site into compliance with the control plan; and
(i) 
Keep a copy of the control plan on the site.
A. 
Green Lake County shall inspect construction sites at least once a month during the period starting March 1 and ending October 31 and at least two times during the period starting November 1 and ending February 28 to ensure compliance with the control plan.
B. 
If land disturbing or land development activities are being carried out without a permit, the Land Conservation Department may enter the land pursuant to the provisions of § 92.07(14) Wis. Stats.