The Level III Stormwater Management and Sediment Control Plan shall contain the following, applicable:
(A) Completed application form and construction schedule with a certification by the person responsible for the land disturbance that the land disturbance will be accomplished pursuant to the plan and that Newberry County has the right to conduct on-site inspections;
(B) A vicinity map sufficient to locate the site and show the relationship of the site to its general surroundings at a scale of not smaller than 1 inch to 1 mile.
(C) A site plan completed by registered professional engineer, registered landscape architect or a Tier B Land Surveyor and drawn to a scale of not smaller than 1 inch to 200 feet, showing:
(1) The boundary lines of the site on which the work is to be performed, including the approximate acreage of the site;
(2) Existing contours with interval of not more than 2 feet, extending not less than 100 feet outside of the site boundary lines;
(3) Proposed contours of disturbed areas with interval of not more than 2 feet;
(4) Proposed physical improvements on this site, including present development and future utilization if future development is planned;
(5) A plan for temporary and permanent vegetative and structural erosion and sediment control measures which specify the erosion and sediment control measures to be used during all phases of clearing, grading, filling, construction, and permanent development and shall describe their proposed operation;
(6) (a) An approved concept plan or preliminary development plan which provides for stormwater runoff control during construction and during the life of the facility;
(b) A time schedule and sequence of operations indicating the anticipated start and completion dates of each development operation;
(c) Should an approved preliminary development plan include a time schedule for phased construction over a time period of more than 6 months, then an anticipated construction schedule for each specific phase may be submitted separately provided the proposed time schedule for each construction phase does not deviate from the approved preliminary development plan by more than 3 months.
(7) A complete and adequate grading plan for borrow pits and material processing facilities where applicable, including restoration and re-vegetation measures;
(8) A general description of the predominant soil types on the site;
(9) A description of the maintenance program for sediment control facilities including inspection programs, vegetative establishment of exposed soils, methods and frequency of removal and disposal of solid waste material removal from control facilities and disposition of temporary structural measures;
(10) Plans to minimize vehicle tracking of sediment from land disturbing activities onto paved public roads carrying significant amount of traffic (ADT of 25 vehicles or greater);
(11) All development with land disturbing activities involving 5 acres, or more must provide water quality protection as outline in Chapter 72, Section 72-307C of the S.C. Stormwater Management and Sediment Reduction Regulation;
(12) Water quality must be guaranteed on these sites which disturb 10 acres or more and that the stormwater runoff drains to a single outlet from land disturbing activities by using 1 of the following methods:
(a) The plan shall control runoff during the land disturbing by a sediment basin where sufficient space and other factors allow these controls to be maintained until the final inspection. The sediment basin shall be designed and constructed to accommodate the anticipated sediment loading from the land disturbance and meet a removal efficiency of 80% suspended solids or 0.5 ML/L peak settleable solids concentration, whichever is less. The outfall device or system design shall take into account the total drainage area flowing through the disturbed area to be served be the basin, or
(b) Other practices may be acceptable if they achieve an equivalent removal efficiency of 80% for suspended or 0.5 ML/L peak settleable solids concentration, which ever is less. The efficiency shall be calculated for disturbed condition for the 10-year, 24-hour event.
(13) Water quality must be guaranteed on these sites which disturb 5 acres or more and that the stormwater runoff drains to a single outlet from land disturbing activities by using 1 of the following methods:
(a) Permanent water quality ponds having a permanent pool shall be designed to store and release the first 1/2 inch of runoff from the site over a 24-hour period. The storage volume shall be designed to accommodate, at least, 1/2 inch of runoff from the entire site.
(b) Permanent water quality ponds, not having a permanent pool, shall be designed to release the first inch of runoff from the site over a 24-hour period.
(14) The name and address of the property owner and developer.
(15) Title, scale, north arrow, date and name of individual or organization preparing plat, and seal.
(Am. Ord. 06-21-05, passed 6-15-2006)