(A) This section applies to the following sites of land development or land disturbing activities:
(1) Those requiring a subdivision plat approval or the construction of houses or commercial, industrial, or institutional buildings on lots of approved subdivision plats;
(2) Those requiring a certified survey approval or the construction of houses or commercial, industrial, or institutional buildings on lots of approved certified surveys;
(3) Those involving grading, removal of protective ground cover or vegetation, excavation, land filling, or other land disturbing activity affecting a surface area of 4,000 square feet or more;
(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;
(6) Those involving the laying, repairing, replacing, or enlarging of an underground pipe or facility for a distance of 300 feet or more; and
(7) The village will enter into letter agreement with utility companies as to their responsibilities on work performed in the village.
(B) The following requirements shall be met on all sites described in division (A) above.
(1) Water pumped from the site shall be treated by temporary sedimentation basins, grit chambers, sand filters, upslope chambers, hydro-cyclones, swirl concentrators, or other appropriate controls designed and used to remove particles of 100 microns or greater for the highest dewatering pumping rate. If the water is demonstrated to have no particles greater than 100 microns during dewatering operations, then no control is needed before discharge, except as determined by the Zoning Administrator. Water may not be discharged in a manner that causes erosion of the site or receiving channels.
(2) 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) Each site shall have gravel 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 work day.
(4) All storm drain inlets shall be protected with a straw bale, filter fabric, or equivalent barrier meeting accepted design criteria, standards, and specifications.
(5) The following criteria 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 in division (B)(5)(c)3. below. Sheet flow 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 .05 feet 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. Soil and 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 divisions (B)(5)(c)1. and (B)(5)(c)2. or (B)(5)(c)1. and (B)(5)(c)3. below.
1. All disturbed ground left inactive for seven or more days shall be stabilized by seeding or sodding (only available prior to September 15), or by mulching or covering, or other equivalent control measure.
2. For sites with more than ten 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 one year design storms having durations from 0.5 to 24 hours. The basin discharge rate shall also be sufficiently low as not to cause erosion along the discharge channel or receiving water.
3. For sites with less than ten acres disturbed at one time, filter fences, straw bales, or equivalent control measures shall be placed along all side slope and down slope sides of the site. If a channel or area of concentrated runoff passes 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 ten cubic yards of material should be located with a down slope drainage length less than 25 feet to a roadway or drainage channel. If remaining for more than seven days, they shall be stabilized by mulching, vegetative cover, tarps, or other means. Erosion from piles which will be in existence for less than seven days shall be controlled by placing straw bales or filter fence barriers around the pile. In-street utility repair or construction, soil or dirt storage piles located closer than 25 feet to a roadway or drainage channel, must be covered with tarps or suitable alternative control if exposed for more than seven days and the storm drain inlets must be protected with straw bales or other appropriate filtering barriers.
(Prior Code, § 22.07)