(a) To control pollution of water resources and wetlands, the applicant shall submit an SWP3 in accordance with the requirements of this regulation. The SWP3 must comply at a minimum with the most recent Ohio EPA NPDES Permit. For specific requirements of an SWP3, the designer shall refer to the current NPDES Ohio construction stormwater general permit and the Summit SWCD SWP3 or Ohio EPA’s Checklist. The SWP3 must address erosion and sediment control during construction as well as post-construction water quality practices. Post-construction practices must meet the requirements of the current NPDES Ohio construction stormwater general permit and the Village of Silver Lake stormwater management technical guidelines.
(b) The SWP3 shall be certified by a professional engineer, a registered surveyor, certified professional erosion and sediment control specialist, or a registered landscape architect.
(c) The SWP3 shall incorporate measures as recommended by the most current edition of Rainwater and Land Development: Ohio’s Standards for Stormwater Management, Land Development and Urban Stream Protection as issued by the Ohio EPA.
(d) All sediment settling ponds shall be dewatered at the pond surface using a skimmer or equivalent device and meet trapping. The use of datasheets is recommended for determining important inputs to design and resulting parameters such as their contributing drainage area, disturbed area, detention volume, sediment storage volume, practice surface area, dewatering time, outlet type, and dimensions (see Ohio EPA’s Rainwater and Land Development Manual and website for examples).
(e) Soils Engineering Report: The Village of Silver Lake Engineer, Summit County Building Standards, or the Summit County SWCD may require the SWP3 to include a Soils Engineering Report based upon their determination that the conditions of the soils are unknown or unclear to the extent that additional information is required to protect against erosion or other hazards. This report shall be based upon adequate and necessary test borings and shall contain all the information listed below. Recommendations included in the report and reviewed by the Village of Silver Lake Engineer, Summit County Building Standards, or the Summit SWCD shall be incorporated in the grading plans and/or other specifications for site development.
(1) Data regarding the nature, distribution, strength, stability, and erodibility of existing soils.
(2) If applicable, data regarding the nature, distribution, strength, stability, and erodibility of the soil to be placed on the site.
(3) Conclusions and recommendations for grading procedures.
(4) Conclusions and recommended designs for interim soil stabilization devices and measures, and permanent soil stabilization after construction is completed.
(5) Design criteria for corrective measures when necessary.
(6) Opinions and recommendations concerning the stability of the site.
(f) If an Operator’s site discharges into a watershed with an approved TMDL, the qualified individual shall select BMPs and provide a rationale for the individual’s selection of BMPs based upon pollutant removal performance and watershed pollutants of concern.
(Ord. 15-2022. Passed 2-7-22.)