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Grafton City Zoning Code

CHAPTER 1295

Construction and Post Construction Site Soil Erosion, Sediment, Storm Water Runoff and Storm Water Quality Controls and Regulations

1295.01 PURPOSE.

   The intent of this chapter is to comply with the requirements of the Ohio Environmental Protection Agency (EPA) National Pollutant Discharge Elimination System (NPDES) Phase II General Permit by establishing standards to achieve a level of soil erosion and storm water control that will minimize and abate degradation of land and water resources and damage to public and private property resulting from earth-disturbing activities involving one acre or more. Reduction of storm water discharges from construction activity disturbing less than one acre must be considered if that construction activity is part of a larger common plan of development or sale that would disturb one acre or more. In addition, this chapter further intends to:
   (a)   Assure that those involved in earth-disturbing activities minimize both soil erosion and the volume and rate of storm water runoff from their sites.
   (b)   Assure that storm water controls are incorporated into site planning and design at the earliest possible stage and that all storm water management practices are properly designed, constructed, and maintained.
   (c)   Prevent unnecessary stripping of vegetation and loss of soil and to promptly revegetate and stabilize the site following earth-disturbing activities.
   (d)   Encourage the construction of storm water management practices that serve multiple purposes such as flood control, erosion control, water quality protection, recreation, and habitat preservation.
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.02 SCOPE.

   (a)   Any person or persons proposing to disturb one acre or more of land for residential, institutional, commercial, office and industrial purposes, including land development proposals for non-agricultural uses and public infrastructure uses, including transportation and utilities within the municipality shall design, develop, and submit a site development plan as described in Section 1295.06. Said plan will be evaluated to determine the potential for erosion, runoff, and sedimentation impacts that may result from such development activities.
   (b)   A storm water management (SWM) plan shall be prepared as described in Section 1295.07 to minimize the impacts of increased impervious surfaces.
   (c)   No earth-disturbing activity subject to regulation under this chapter shall be undertaken for any land disturbance equal to or greater than one acre without an approved site development plan as required under Section 1295.06 and a storm water management (SWM) plan as required under Section 1295.07.
   (d)   Final approval of a proposed development, redevelopment, street, or utility project shall not be given unless:
      (1)   A determination is made by the Municipal Engineer based on submission of a site development plan as detailed in Section 1295.06 that the proposed earth-disturbing activity will minimize accelerated runoff, erosion, and/or sediment.
      (2)   A SWM plan has been approved by the Municipal Engineer that determines that the proposed earth-disturbing activity will not cause accelerated runoff, erosion, and/or sediment.
   (e)   Any person or persons seeking approval to construct a structure shall be exempted from having to prepare a site development plan and a SWM plan provided they meet all of the following:
      (1)   Construction takes place on one parcel.
      (2)   The earth-disturbing activity does not affect more than one acre of the development site at a time.
      (3)   The activity is not located within a floodplain or floodway as identified by FEMA.
      (4)   The parcel is part of an overall development plan which has received approval of a SWM plan, and the site owner and/or applicant certifies that they will comply with said plan.
   (f)   This chapter does not apply to:
      (1)   Land-disturbing activities related to producing agricultural crops or silviculture operations regulated by the Ohio Agricultural Sediment Pollution Abatement Rules (1501:15-3-01 to 1501:15-309 of the Ohio Administrative Code).
      (2)   Existing strip-mining operations regulated by R.C. Chapter 1513.
      (3)   Existing surface mining operations regulated by R.C. Chapter 1514.
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.03 CONFLICTS, SEVERABILITY, NUISANCES AND RESPONSIBILITY.

   (a)   Where this chapter imposes a greater restriction upon land than is imposed or required by other municipal provisions of law, ordinance, contract or deed, the provisions of this chapter shall prevail.
   (b)   If a court of competent jurisdiction declares any clause, section, or provision of this chapter invalid or unconstitutional, the validity of the remainder shall not be affected thereby.
   (c)   These regulations shall not be construed as authorizing any person to maintain a private or public nuisance on their property. Compliance with the provisions of this chapter shall not be a defense in any action to abate such nuisance.
   (d)   Failure of the municipality to observe or recognize hazardous or unsightly conditions or to recommend corrective measures shall not relieve the site owner and/or applicant from the responsibility for the conditions or damages resulting therefrom and shall not result in the municipality, its officers, employees, or agents from being responsible for any conditions or damages resulting therefrom.
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.04 DEFINITIONS.

   All words used in this chapter shall have their customary meanings as defined in Webster's New World Dictionary and/or Rainwater and Land Development: Ohio's Standards for Storm Water Management, Land Development and Urban Stream Protection, current edition, except those specifically defined in this section.
   (a)   "Approval authority." An official, organization, or group designated to review and approve or disapprove storm water pollution prevention plans (SWP3s).
   (b)   "Authorized agent." An official, organization, or group designated to provide technical guidance in the development and implementation of site development plan and storm water management plan and to review and approve/disapprove such plans as authorized.
   (c)   "Best Management Practices (BMPs)." Schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the United States. "BMPs" also include but may not be limited to treatment requirements, operating procedures, and practices to control plant and/or construction site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.
   (d)   "Buffer." A designated transition area around water resources or wetlands that is left in a natural, usually vegetated, state so as to protect the water resources or wetlands from runoff pollution. Construction activities in this area are restricted or prohibited.
   (e)   "Critical storm." A storm which is calculated by means of the percentage increase in volume of runoff by a proposed earth-disturbing activity or development area. The critical storm is used to calculate the maximum allowable storm water discharge rate from a site.
   (f)   "Cut." An excavation. The difference between a point on the original ground and a designated point of lower elevation on the final grade.
   (g)   "Detention basin." An impoundment area created by constructing an embankment, excavating a pit, or both, for the purpose of temporarily storing storm water.
   (h)   "Detention facility." A detention basin or alternative structure designed to temporarily store storm water runoff and gradually release the stored water at a controlled rate.
   (i)   "Development." A group of houses, apartments, industrial, institutional, or commercial buildings, usually constructed as part of a single project.
   (j)   "Development area." Any area upon which earth-disturbing activities are planned or underway for a development.
   (k)   "Earth-disturbing activity." Any grading, excavation, filling, or other alteration of the earth's surface where natural or man-made ground cover is destroyed.
   (l)   ''Federal Emergency Management Agency (FEMA)." The agency with the overall responsibility for administering the National Flood Insurance Program.
   (m)   "Fill." Any act by which earth, sand, gravel, rock, or any other material is placed, pushed, dumped, pulled, transported, or moved to a new location above the natural surface of the ground or on top of the stripped surface. The difference in elevation between a point on the original ground and a designated point of higher elevation on the final grade.
   (n)   "Grubbing." Machine or manual clearing of vegetation. Usually performed as the first step in the development of land.
   (o)   "Non-structural controls." Storm water runoff control and treatment techniques that use natural measures to control runoff and/or reduce pollution levels. Examples include, but may not be limited to, minimizing impervious area, buffer strips along streams, and preserving natural vegetation.
   (p)   "NPDES." National Pollutant Discharge Elimination System.
   (q)   "Parcel." Any legally described piece of land created by a partition, subdivision, deed, or other instrument recorded with the appropriate entity or agency.
   (r)   "Peak rate of runoff." The maximum rate of runoff for any 24-hour storm of a given frequency.
   (s)   "Pre-development conditions." Site conditions as they existed prior to any improvement activities.
   (t)   "Riparian." Relating to the banks of a natural course of water.
   (u)   "Sediment basin." A barrier, dam or other facility built to reduce the velocity of water in order to settle and retain sediment.
   (v)   "Site development plan." The written document or set of plans meeting the requirements of this chapter that provides information on the location of the area proposed for development, the site in relation to its general surroundings, and existing characteristics of the site, including limits of earth-disturbing activities.
   (w)   "Silviculture." A branch of forestry dealing with the development and care of forests.
   (x)   "Stop-work order." An order issued which requires that all work on the site must cease except work associated with bringing the site into compliance with the approved SWM plan or site development plan.
   (y)   "Storm water management (SWM) plan." The written document meeting the requirements of this chapter that sets forth the plans and practices to be used to minimize storm water runoff from a site and to safely convey or temporarily store and release post-development storm water runoff at an allowable rate to minimize flooding and erosion.
   (z)   "Storm water pollution prevention plan (SWP3)." The document required by the Ohio EPA for compliance with its NPDES Construction Activity General Permit #OHC000004. The requirements of the SWP3 are required as part of the local jurisdiction's storm water management plan as described above and in this regulation.
   (aa)   "Storm frequency." The average period of time in years within which a storm of a given duration and intensity can be expected to be equaled or exceeded.
   (bb)   "Structural controls." Any human-made facility, structure, or device that is constructed to provide temporary storage and/or treatment of storm water runoff. Examples include, but may not be limited to, retention and detention basins, rock check dams, swales, and constructed wetlands.
   (cc)   "Swale." A low-lying stretch of vegetated land which gathers and carries surface water.
   (dd)   "Temporary vegetation." Short term vegetative cover such as oats, rye, or wheat, used to stabilize the soil surface until final grading and installation of permanent vegetation.
   (ee)   "Watercourse." Any natural waterway (including, but not limited to, streams, rivers, creeks, ditches, channels, canals, waterways, gullies, ravines, or washes) in which waters flow in a definite direction or course either continuously or intermittently and including any area adjacent thereto which is subject to inundation by reason of overflow of flood water.
   (ff)   "Pollutant of concern." Sediment or a water quality measurement that addresses phosphorus which has been identified as a cause of impairment of any water body that will receive a discharge from the land development activity.
   (gg)   "Maintenance easements(s)." Legal recorded instrument between the site owner and/or applicant and the Municipality of Grafton to provide access to the facility for periodic inspection.
   (hh)   "Maintenance agreement." Formal maintenance agreement for stormwater management control facilities binding on all subsequent landowners and recorded in the office of the Lorain County Clerk as a deed restriction on the property prior to plan approval.
   (ii)   "OEPA." Ohio Environmental Protection Agency.
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.05 PERFORMANCE STANDARDS.

   (a)   Erosion and Sediment Kept on Site. Erosion and sedimentation caused by accelerated wind or storm water runoff over the site due to earth-disturbing activities shall be stabilized and confined to within the boundaries of the development site.
   (b)   Structural and Nonstructural Best Management Practices. Nonstructural storm water management practices shall be encouraged. Such practices may include, but not be limited to, preserving riparian areas, preserving existing vegetation and vegetative buffer strips, phasing of construction, and designation of tree preservation areas.
   (c)   Stream and Wetland Riparian Buffers. The site owner and/or applicant shall leave a riparian buffer on sides of and/or surrounding water resources, except for crossings and other riparian area impacts approved by the Municipal Engineer. Buffer area shall equal all identified FEMA floodways and floodplains unless otherwise approved by the Municipal Engineer. Buffer areas shall be maintained for minor and major ditch setbacks.
   (d)   Channel Protection. To protect stream channels from degradation, specific channel protection criteria shall be provided as prescribed in the latest edition of Rainwater and Land Development.
   (e)   Temporary Stabilization of Disturbed Areas and Soil Stockpiles.
      (1)   A temporary vegetative cover shall be established on disturbed areas as specified in Table I below.
 
Table 1: Temporary Stabilization
Area Requiring Temporary Stabilization
Time Frame to Apply
Erosion Controls
Any disturbed areas within 50 feet of a stream but not at final grade.
Within 2 days of the most recent disturbance if that area will remain idle for more than 21 days.
For all construction activities, any disturbed area, including soil stockpiles that will be dormant for more than 21 days but less than 1 year.
Within 7 days of the most recent disturbance within the area.
Disturbed areas that will be idle over winter.
Prior to November 1.
 
      (2)   Application practices include, but may not be limited to, vegetation establishment, mulching, and the early application of gravel base on areas to be paved. Soil stabilization measures should be appropriate for the time of year, site conditions and estimated time of use.
      (3)   Topsoil shall be maintained in a usable condition for sustaining vegetation and reused on the site.
   (f)   Permanent Stabilization.
      (1)   A permanent vegetative cover shall be established on disturbed areas as specified in Table 2 below.
 
Table 2: Permanent Stabilization
Area Requiring Permanent Stabilization
Time Frame to Apply
Erosion Controls
Any area that will lie dormant for 1 year or more.
Within 2 days of the most recent disturbance.
Any areas within 50 feet of any stream and at final grade.
Within 2 days of reaching final grade.
Any area at final grade.
Within 7 days of reaching final grade within that area.
 
      (2)   Permanent vegetation shall not be established until a ground cover is achieved which is mature enough to control soil erosion and will survive severe weather conditions.
   (g)   Cut and Fill Slopes. Cut and fill slopes shall be designed and constructed in a manner that will minimize erosion and slippage. Consideration shall be given to the length and steepness of the slope, soil type, up-slope drainage area, groundwater conditions and slope stabilization.
   (h)   Protection of Adjacent Properties/Public Right-of-Ways. Properties, public rights-of-way, and thoroughfares adjacent to the site of an earth-disturbing activity shall be protected from sediment deposition. This may be accomplished by preserving a well-vegetated buffer at the perimeter of the site whenever possible, by installing perimeter controls such as sediment barriers, filters, dikes, sediment basins, or by a combination of such measures as applicable.
   (i)   Sediment Control Structures.
      (1)   Erosion and sediment control practices used to satisfy the performance standards shall meet the standards and specifications in the current edition of Rainwater and Land Development. The engineer shall design and implement control practices which comply with these minimum requirements.
      (2)   Sediment control structures shall be used to control erosion and trap sediment on a site remaining disturbed for more than 14 days. Such structures may include, but are not limited to, silt fences, storm drain inlet protection, sediment basins and diversions or channels which direct runoff to a sediment basin. All sediment control practices must be capable of ponding runoff in order to be considered functional.
      (3)   Sediment control structures shall be set up within seven days from the start of grubbing and shall be made functional before other earth-disturbing activities take place. Earthen structures such as dams, dikes and diversions shall be seeded and mulched as soon as the installation is complete. Sediment control structures shall be functional throughout the course of earth-disturbing activity and until the site is stabilized with permanent vegetation.
      (4)   Sheet flow runoff from disturbed areas of the site shall be intercepted by silt fence or diversions. Silt fence shall be placed on a level contour and shall be capable of temporarily ponding runoff. The relationship between the maximum drainage area to silt fence for a particular slope range is shown in division (i)(1) of this section.
 
Schedule 1295.05(i)(1) Maximum Drainage Area for Silt Fence
Maximum drainage area (in acres) to 100 linear feet of silt fence
Range of slope for a particular drainage area (in percent)
0.5
<2%
0.25
> 2% but < 20%
0.125
> 20% but < 50%
 
      (5)   Concentrated storm water runoff from denuded areas flowing at rates that exceed the design capacity of sediment barriers shall pass through a sediment-settling facility. The facility shall be designed according to Rainwater and Land Development, current edition.
      (6)   Storm water diversion practices shall be used to keep runoff away from disturbed areas and steep slopes. Such devices, which include swales, dikes, or berms, may receive storm water runoff from areas up to ten acres.
      (7)   A centralized sedimentation basin shall be utilized for common drainage areas equal to or greater than ten acres.
      (8)   The Municipal Engineer may require sediment basins or traps for smaller disturbed areas where deemed necessary.
      (9)   If the Municipal Engineer determines that site conditions do not warrant its construction, based upon hydrological and hydraulic data, the storm water detention requirement may be modified.
   (j)   Stabilization of Waterways and Outlets. All on-site storm water conveyance channels shall be designed and constructed to withstand the expected velocity of flow. Methods adequate to minimize erosion shall also be provided at the outlets of all pipes and paved channels.
   (k)   Storm Sewer Inlet Protection.
      (1)   Unless otherwise provided for on the approved stormwater management plan, storm sewer inlets shall be protected so that sediment-laden water will not enter the conveyance system without first being filtered or otherwise treated to remove sediment, unless otherwise approved by the Municipal Engineer.
      (2)   There shall be no sediment-laden discharges to drainage channels resulting from dewatering activities. If any sediment-laden ground water is encountered during trenching activities, then the sediment-laden ground water must pass through an effective sediment control device prior to being discharged from the construction site.
      (3)   Areas designated for the storage or disposal of solid, sanitary, and toxic wastes, dumpsters, concrete truck washout pits, and fuel tanks shall be shown on the storm water management (SWM) plan.
   (l)   Working in or Crossing Watercourses.
      (1)   Construction activities shall be kept out of watercourses to the maximum extent possible. Where in-channel work is necessary, precautions shall be taken to stabilize the work area during construction to minimize erosion. The channel (including bed and banks) shall be restored, and all disturbed area stabilized immediately after in-channel work is completed.
      (2)   Where a watercourse will be crossed regularly during construction, a non-erodible temporary stream crossing shall be provided.
   (m)   Construction Access Routes.
      (1)   Measures shall be taken to prevent soil transport onto surfaces where runoff is not checked by sediment controls, such as public roads. Stone construction entrance(s) shall be implemented as soon as possible. The entrances shall be planned and installed according to the requirements in the most recent edition of the Ohio Rainwater and Land Development manual or as directed by the Municipal Engineer.
      (2)   Where soil is transported onto public road surfaces, the roads shall be cleaned thoroughly by either sweeping or scraping at the end of each workday or more frequently, in order to ensure public safety. Street washing shall be allowed only after shoveling or sweeping has removed most of the sediment.
      (3)   Erodible material ramps in streets to enable equipment to cross curbs shall be properly removed immediately after use.
   (n)   Maintenance and Removal of Temporary Measures.
      (1)   All temporary erosion and sediment control practices shall be maintained and repaired to assure continued performance.
      (2)   All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization is achieved or after the temporary measures are no longer needed. Trapped sediment and other disturbed soil areas resulting from the removal of temporary measures shall have the final grade re-established and be permanently stabilized to prevent further erosion and sedimentation.
   (o)   Control of Construction Site Debris and Wastes. All site owners and/or applicants, contractors and developers shall control wastes such as discarded building materials, concrete truck washout, chemicals, litter, and sanitary waste or debris from the site to the extent practical. Site management practices shall be implemented to prevent toxic materials, hazardous materials, or other debris from entering drainage channels. These practices shall include, but are not limited to, the following:
      (1)   If applicable, a dumpster shall be made available for the proper disposal of construction site waste materials, garbage, plaster, drywall, grout, gypsum, etc. If applicable, a second covered dumpster will be provided for the proper disposal of toxic and/or hazardous wastes.
      (2)   The washing of any concrete material into a street, catch basin, or other public facility or natural resource shall not occur. A designated area for concrete washouts shall be made available and used for all concrete washouts.
      (3)   All fuel tanks and drums shall be stored in a marked storage area. A dike shall be constructed around this storage area with a minimum capacity equal to 110 percent of the volume of the largest container in the storage area. All additional requirements of the local fire authority must be followed. If the fuel tanks have a self- contained dike, the plug will be kept in the dike tank at all times.
      (4)   Any toxic or hazardous wastes and/or contaminated soils must be disposed of according to all applicable environmental laws and statutes. Local health districts and Ohio EPA can provide guidance on these issues.
      (5)   Paint, paint washing liquids, excess paints and other paint wastes are considered solid wastes and shall be disposed of in accordance with applicable state regulations. Appropriate handling of these wastes shall occur at the site so as to prevent the discharge of these wastes into surface or ground waters.
         A.   Water-based paint washing liquids and small quantities of excess water-based paints shall be properly disposed of off-site.
         B.   All other paints, paint thinners, and paint cleaning materials will be properly disposed of off-site or in the site's hazardous waste disposal dumpster or container.
   (p)   Use, Safety and Maintenance of Storm Water Practices.
      (1)   Storm water management practices shall be designed for the ultimate use of the site and function safely and with minimal maintenance. Areas developed for a subdivision shall provide a storm water management system for the ultimate development of all the subdivided lots and street rights-of-way.
      (2)   If an inspection by a representative of the municipality or OEPA reveals that a control practice needs repair or maintenance, upon proper notice, the site owner and/or applicant shall repair same according to the Timeline Correction Table as identified in Section 1295.08(g).
   (q)   Inspection of Storm Water Controls. See Section 1295.08(h) for specific requirements. All on-site and off-site (if applicable) control practices shall be periodically inspected by both the site owner and/or applicant and/or site owner/applicant's representative and a representative of the municipality or OEPA to ensure proper function and to identify failures.
      (1)   At a minimum, applicable construction sites which have the following compliance issues shall be inspected once every 14 calendar days instead of on a monthly basis:
         A.   Construction activities have started at the site with no SWP3 review and approved by the MS4;
         B.   Failure to install sediment basin(s) when the SWP3 and/or site drainage plans clearly indicate as a first step (within seven days prior to grading and within seven days of grubbing);
         C.   Construction activities taking place with no sediment/erosion controls; or
         D.   Dewatering activities resulting in turbid discharges.
         E.   Inspections can be returned to a monthly basis for the construction site once compliance with the above compliance issues have been addressed and verified.
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.06 SITE DEVELOPMENT PLAN.

   (a)   Any person seeking approval of residential, industrial, commercial, office or institutional uses, including land development proposals for non-agricultural uses and public infrastructure uses, shall develop, and submit to the municipality for review and approval a site development plan prepared by a professional engineer licensed by the State of Ohio as detailed below.
   (b)   Site Development Plan Requirements.
      (1)   Site plan map that shows the location of existing features and proposed improvements on the site including:
         A.   Total area of the site and the area of the site that is expected to be disturbed (i.e., grubbing, clearing, excavation, filling, or grading, including off-site borrow areas).
         B.   Area of land not to be disturbed shall be shown.
         C.   Surface water locations, including known springs, wetlands, streams, lakes, water wells, etc., on or within 200 feet of the site, including the boundaries of stream channels and first subsequent named, or un-named, receiving water(s).
         D.   The general directions of surface water flow and 100-year floodway and floodplain when applicable.
         E.   All existing and proposed improvements, including but not limited to buildings, retaining walls, sidewalks, streets, parking lots, driveways, utilities and storm water basins, drainage impoundments, channels, and outlets, etc.
      (2)   A description of the nature and type of the earth-disturbing/ construction activity (i.e., residential, commercial, highway, etc.).
      (3)   A photocopy of the appropriate soil survey sheet found in the USDA Soil Survey of Lorain County with location of site identified.
      (4)   An estimate of the percent of imperviousness created by the earth-disturbing activity.
   (c)   Site Development Plan Submission, Review and Action.
      (1)   Submission of a site development plan by a site owner and/or applicant as prepared by a professional engineer seeking approval initiates the review process.
      (2)   The Municipal Engineer shall review the site development plan.
      (3)   Review of the site development plan shall be completed within 20 working days of submittal.
      (4)   Following the plan review the municipality shall either:
         A.   Approve the site development plan;
         B.   Conditionally approve the site development plan pending additional information and/or the incorporation of required changes; or
         C.   Reject the plan and request a revised plan be submitted addressing noted item(s).
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.07 STORM WATER MANAGEMENT (SWM) PLAN REQUIREMENTS.

   (a)   Storm water management (SWM) plans are intended to provide critical information on all soil erosion and runoff control activities and Best Management Practices (BMPs) to be used and incorporated on the site both during and after site development. This information includes, but is not limited to, site grading, storm water management facilities and practices, erosion and runoff control information, maintenance plans, and other measures that focus on managing the effects of earth-disturbing activities that occur as a result of site development. Said plan shall be prepared, signed, and sealed by a licensed professional engineer authorized in the State of Ohio.
   (b)   Each SWM plan shall provide site design that meets the performance standards presented in Section 1295.05 and provide practical treatment for both water quality and quantity of storm water from the site as appropriate.
   (c)   In general, SWM plans need to address:
      (1)   Erosion and sediment control. Provide measures to ensure that earth-disturbing activities at the site during and after development will be managed in a manner that will minimize increased erosion and sedimentation from the site resulting in impacts to water quality and that meet the performance standards specified in Section 1295.05.
      (2)   Runoff control. Providing measures to ensure that the rate of surface water runoff from the development site during and after construction will approximate the predevelopment conditions and that meet the performance standards specified in Section 1295.05.
   (d)   A SWM plan shall specifically include all the following:
      (1)   The minimum elements required in the site development plan described in Section 1295.06(b).
      (2)   The contents of the storm water pollution prevention plan (SWP3) required by the Ohio EPA's NPDES Construction Activity Permit #OHC000003 and incorporated here by reference. The contents of the storm water management (SWM) plan include, but are not limited to:
         A.   A determination of runoff coefficients for both the pre-construction and post construction site conditions.
         B.   For all disturbances of five or more acres of land (or less than five acres, but part of a larger common plan of development or sale which will in total disturb five or more acres of land), a description of post construction BMP(s) chosen and designed to detain and treat a water quality volume (WQv) equivalent to the volume of runoff from a 0.75-inch rainfall (see Ohio EPA Construction Activity Permit for Methodology).
         C.   For all disturbances of more than one acre but less than five acres of land and is not a part of a larger common plan of development or sale which will disturb five or more acres of land, a description of measures that will be installed during the construction process to control pollutants in storm water discharges that will occur after construction operations have been completed.
         D.   An implementation schedule which describes the sequence of major construction operations (i.e., clearing, grubbing, excavating, filling, grading, utilities, and infrastructure installation, etc.) and the implementation of erosion, sediment and storm water management practices or facilities to be employed during each operation of the sequence.
         E.   A detail drawing of a typical individual lot showing standard individual lot erosion and sediment control practices.
         F.   A detailed description of the storm water controls to be incorporated and how these meet or exceed the appropriate performance standards presented in Section 1295.05.
         G.   A detailed maintenance plan that describes procedures (e.g. inspections) needed to ensure the continued performance of control practices and the responsible party (i.e., homeowner association, site owner and/or applicant, etc.). Such plans must ensure that pollutants collected within structural post-construction practices be disposed of in accordance with local, state, and federal regulations.
         H.   A site map including:
            1.   Limits of earth-disturbing activity of the site including associated offsite borrow or spoil areas.
            2.   Soil types on the site, including locations of unstable or highly erodible soils.
            3.   Existing and proposed contours. A delineation of drainage watersheds expected during and after major grading activities as well as the size of each drainage watershed, in acres.
            4.   Existing and planned locations of buildings, roads, parking facilities and utilities.
            5.   The location of all erosion and sediment control practices, including areas likely to require temporary stabilization during site development.
            6.   Sediment and storm water management basins noting their sediment settling volume and contributing drainage area.
            7.   Permanent storm water management practices to be used to control pollutants in storm water after construction operations have been completed (as applicable).
               BMPs: Best Management Practices used in the post- construction water quality plan may include but are not limited to:
               a.   Permanent storm water detention ponds that provide extended detention of the water volume.
               b.   Flow attenuation by use of open vegetated swales and natural depressions.
               c.   Onsite infiltration of runoff.
               d.   Sequential systems that combine several practices. Permanent conservation easements, preferably with the easement being held by a third party with no vested interest in ever seeing the property developed.
               e.   Natural channel design for drainageways.
               f.   Bioengineering in drainageways.
               g.   Recreating floodplains.
               h.   Chemical and biological filters in storm sewer inlets.
               i.   Sand filters.
               j.   Allowing roof water from buildings to run across lawn areas to remove pollutants.
               k.   Onsite sewage disposals system replacement or conversion to sanitary sewers.
               l.   Low impact development design.
               m.   Aquatic benches in retention basins and ponds.
               Technical Basis: The plan will contain a statement of the rationale utilized to select the BMPs used to control pollution and to maintain and protect water quality.
            8.   Areas designated for the storage or disposal of solid, sanitary, hazardous and/or toxic wastes, including but not limited to dumpster areas, cement truck washout areas, and vehicle fueling and maintenance areas.
            9.   The location of designated construction entrances where vehicles will access the site.
            10.   The location of any in-stream activities, including stream crossings.
            11.   A copy of the Ohio EPA NPDES permit shall be included and referenced on the SWM plan.
   (e)   Determination of Post Development Runoff.
      (1)   Each SWM plan shall include an evaluation of pre-development conditions together with impacts during construction (disturbed) and post-development impacts that quantify the volume and rate of runoff from the site by subdrainage areas. This evaluation shall be prepared according to methods prescribed in the latest edition of Rainwater and Land Development or other appropriate sources. The evaluation shall:
         A.   Show delineation and sequence of subdrainage units which comprise the area proposed for development.
         B.   Indicate the hydraulic length of slope per individual subdrainage unit and the length of the natural or manmade watercourse which accommodates the surface runoff from each subdrainage unit.
         C.   Indicate within the legend the average percent slope, erosion factor (K) and runoff curve number (CN) per individual subdrainage unit for a 24-hour storm of a one-year frequency.
         D.   Include a hydrograph for a 24-hour storm of the critical frequency to be controlled and all calculations made pertinent to evaluate the effects of the proposed development on the pre-development runoff conditions of the site.
      (2)   Calculations for the design of storm water management facilities shall demonstrate the following for each subdrainage unit:
         A.   The peak rate of runoff from the critical storm and all more frequent storms occurring on the site does not exceed the peak rate of runoff from a one-year frequency, 24-hour storm occurring on the same site under pre-development conditions.
         B.   Storms of less frequent occurrence than the critical storm, up to the 100-year storm shall have its peak runoff rates no greater than 0.25 CFS per contributing drainage acre unless otherwise approved by the Municipal Engineer.
      (3)   Detention volume shall be no less than 0.167 acre-feet per contributing drainage acre unless otherwise approved by the Municipal Engineer.
      (4)   Calculation of a critical storm for each subdrainage unit of the site shall be determined as follows:
         A.   Calculate by appropriate hydrologic methods, such as the NRCS Technical Release 55, (TR55) , the total volume of runoff from a one-year frequency, 24-hour storm occurring on the development area before, during and after development.
         B.   From the volumes determined in division A. above, determine the percentage increase in volume of runoff due to the proposed development, and using this percentage, select the 24-hour critical storm from the following table:
24-Hour Critical Storm Runoff Rate
24-Hour Critical Storm Runoff Rate
If the percentage of increase in runoff volume is:
Equal to or greater than
And less than
The critical storm runoff rate will be limited to:
0
10
1 year
10
20
2 years
20
50
5 years
50
100
10 years
100
250
25 years
250
500
50 years
500
100 years
 
         C.   The Municipal Engineer shall approve or reject any calculation method based on its technical validity for the given situation. Downstream capacity may further reduce maximum discharge requirements.
      (5)   Off-site storm water control facilities. Exceptions to requiring permanent on-site runoff control on the site may be considered by the Municipal Engineer provided the site owner and/or applicant can prove that:
         A.   The intent and standards of this chapter for runoff control can be best achieved by the utilization of off-site storm water control facilities.
         B.   Runoff from the site can be conveyed to offsite storm water facilities in a manner and by means which satisfy or surpass the standards of this chapter.
         C.   The site owner and/or applicant has ownership of or the right to use the off-site facility in question.
   (f)   Storm water management (SWM) plan submission review and action.
      (1)   The site owner and/or applicant is encouraged to have a pre-submission meeting with the municipality.
      (2)   The site owner and/or applicant's submission of two sets of the SWM plan, and other supporting data required by this regulation, to the municipality initiates the review process.
      (3)   The SWM plan shall be reviewed by the Municipal Engineer to:
         A.   Verify background information furnished by the site owner and/or applicant and evaluate the proposed development in relation to existing site conditions.
         B.   Assess the SWM plan in relation to the performance standards and requirements of this chapter.
      (4)   Upon submission of the SWM plan the municipality shall complete a review and shall either:
         A.   Approve the SWM plan as submitted by the site owner and/or applicant;
         B.   Conditionally approve the SWM plan and require the submission of additional and/or revised information by the site owner and/or applicant, in order to fully meet the intent and standards of this chapter; or
         C.   Disapprove the SWM plan based upon a written review noting the reasons.
      (5)   Action by the municipal approval authority and the authorized agent(s) approving or disapproving the SWM plan is a final order for purposes of judicial review.
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.08 COMPLIANCE RESPONSIBILITY.

   (a)   Performance Liability. No provision of this chapter shall limit, increase, or otherwise affect the liabilities of the site owner and/or applicant nor impose any liability upon the municipality not otherwise imposed by law.
   (b)   No Release from Other Requirements. No condition of this permit shall release the site owner and/or applicant from any responsibility or requirements under other federal, state, or local environmental regulations. If requirements vary, the most restrictive requirements shall prevail.
   (c)   Proceeding with Activity. Soil disturbing activities regulated under this chapter shall not begin until all necessary state and federal permits and appropriate approvals of site development plans or storm water management plans have been granted to the site owner and/or applicant.
   (d)   Performance Responsibility. The site owner and/or applicant is responsible for carrying out all provisions of the approved site development plan or SWM plan and for meeting all the standards and requirements of this regulation.
   (e)   Enforcement.
      (1)   All development sites shall be inspected by the site owner and/or applicant under the direction of a licensed professional engineer to ensure compliance with the approved site development plan or SWM plan. All sites are also subject to inspections by the municipality's authorized agent(s) under the direction of a licensed professional engineer to ensure compliance with the approved site development plan or SWM plan.
      (2)   The status report prepared by the site owner and/or applicant shall be distributed to the municipality, the contractor if applicable, and the professional engineer of record.
      (3)   If it is found that the operations are being conducted in violation of the approved site development plan and SWM plan, a stop-work order may be issued by the municipality until the identified violations cease and are corrected.
      (4)   After the issuance of a stop work order provided for in division (e)(3) above, but before the imposition of any fines, the site owner and/or applicant shall have the opportunity to request a meeting with the Law Director and the municipality to show cause why work should not be stopped.
      (5)   Following the issuance of a stop-work order, the municipality shall determine if and when the development may proceed. Any determination by the municipality pursuant to this section is a final order for purpose of judicial review.
   (f)   Violations.
      (1)   The municipality shall notify the storm water site owner and/or applicant of any violations observed in writing. Said notice shall indicate the exact nature of the violations and other specific corrections which are required.
      (2)   The site owner and/or applicant shall comply with the timeline for correction in the table listed below. Timeline extension for adverse weather conditions may be granted upon approval of the municipality.
      (3)   Violations.
Timeline for Corrective Action
Nature of Violation
Number of Days from Inspection to Correct Functioning of Control Practice
Timeline for Corrective Action
Nature of Violation
Number of Days from Inspection to Correct Functioning of Control Practice
Silt fence
Within 3 days
Outlet control structure
Within 3 days
Temporary or permanent stabilization within 50' of drainage channels
Within 3 days
Stabilized construction entrance
Within 3 days
Pumping sediment-laden discharge into drainage channel
Immediately upon notice
Sediment settling pond
Within 10 days
Any other control practice not addressed in this table
Within 3 days
 
   (g)   Penalties Subsequent to Issuance of Stop-Work Order. Subsequent to the issuance of a stop-work order, one or more of the following penalties may be imposed.
      (1)   If the earth-disturbing activity involves a subdivision, the applicable penalties (including fines) provided for in the subdivision regulations of the municipality shall apply. Applicable penalties as described in division (o) of this section.
      (2)   When determined necessary by the municipality, the authorized agent(s) on behalf of the municipality may enter the site and make any modifications necessary to correct the situation(s) involving excessive erosion or sedimentation and place the cost of such corrective actions on the tax duplicate of the site owner/applicant.
      (3)   The authorized agent(s) may request the legal representative of the municipality to seek an injunction or other appropriate relief to abate excessive erosion or sedimentation and secure compliance with this chapter. In granting such relief the court may order the construction of sediment control improvements and/or the implementation of other control measures and/or fines as identified in division (o)(3) of this section or any other relief the court determines.
   (h)   Internal Inspections.
      (1)   All controls on the site shall be inspected at least once every seven calendar days and within 24 hours after any rainfall greater than one-half inch of rain per 24-hour period. The site owner and/or applicant shall assign a qualified professional engineer experienced in the installation and maintenance of erosion and runoff controls to conduct these inspections to ensure that all storm water control practices are functional, that all provisions of the SWM plan and this regulation are being met, and whether additional control measures are required.
      (2)   The site owner and/or applicant shall maintain the records for three years following the final stabilization of the site. The records shall include:
         A.   Name of site.
         B.   Names(s) and qualifications of personnel making the inspections.
         C.   The date(s) of inspections.
         D.   Weather conditions.
         E.   Major observations relating to the implementation of the SWM plan and a certification as to whether the site is in compliance with the SWM plan, SWP3, and NPDES permit, if applicable.
         F.   This record shall also identify any incidents of noncompliance, actions taken to correct any problems and the date(s) corrective action(s) was taken.
         G.   A copy of annual updates to this record shall be provided to the municipality by March 1st of each year.
      (3)   A copy of all inspection log sheets must be submitted to the municipality within five working days of the date that the inspection was conducted.
   (i)   Ownership and Maintenance of Storm Water Facilities.
      (1)   In the case of proposed subdivisions and other private developments, inspection and maintenance agreements shall be approved before the municipality accepts the final plat of the proposed subdivision, or issues final construction plan approval for other private developments. Said agreement shall be incorporated into the site owner and/or applicant's developer agreement when applicable. This agreement shall bind all current and subsequent owners of land served by the storm water facilities.
      (2)   All inspection and maintenance agreements shall do the following:
         A.   Designate the party(ies) responsible for the maintenance of all storm water management facilities and practices including mowing, landscaping, debris pick-up, and to ensure all inlet and outlet structures are free of obstructions and in good repair. For subdivisions, unless otherwise approved by the municipality, this responsible party(ies) shall be an entity of common ownership (e.g., land/homeowner's association) within the proposed subdivision.
         B.   Prohibit unauthorized alterations of all storm water management facilities. All revisions shall be approved by the municipality.
         C.   Provide adequate access to all storm water management facilities for inspection by the municipality's authorized agent(s) and corrective actions by the site owner and/or applicant when determined necessary by the municipality.
      (3)   As applicable, all storm water management facility easements shall be shown on the record plat, prior to approval by the municipality, and a reference shall be made to the entity or individual(s) responsible for their maintenance.
      (4)   The municipality may require the site owner and/or applicant to follow the maintenance procedure outlined in R.C. § 6131.63. The municipality's authorized agent(s) may require of the site owner and/or applicant any one or more of the following items of the maintenance agreement.
         A.   Benefit two or more property owners.
         B.   Are designed for cost-effective maintenance.
         C.   Are determined by the municipality or its authorized agent(s) to be appropriate additions to this jurisdiction's existing storm drainage system.
         D.   Are not better suited for private maintenance by an individual or group of property owner(s), with ultimate responsibility for maintenance in the event of default on the part of the owner(s) remaining with jurisdiction.
      (5)   The following conditions shall apply to all drainage easements:
         A.   Easements shall be approved by the municipality prior to approval of the final plat and shall be recorded with said plat, or shall be approved prior to approval of final construction plans.
         B.   Unless otherwise required by the municipality, drainage easements shall be no less than 20 feet wide.
         C.   Unless otherwise required and approved by the municipality, storm water management facilities, including but not limited to basin, ponds, or other retention/detention practices, shall be on separate lots held and maintained by an entity of common ownership (i.e., land/homeowners association).
         D.   Those lots that contain and/or are crossed by a drainage easement shall have the following restriction: Any lot area reserved for drainage purposes shall at all times be kept free of any obstructions to the flow of water. No improvements or modifications within the identified drainage easement area will be allowed without the approval of the municipality.
   (j)   Schedule of Fees. The municipality shall establish a schedule of fees, charges, expenses, and collection procedure for same and other matters pertaining to this chapter. The schedule of fees shall be posted at the applicable municipal offices. Until all applicable fees, charges and expenses have been paid in full, no action shall be taken on any application or appeal.
Fees for Full Erosion & Sediment Control Plans
Fees for Full Erosion & Sediment Control Plans
Subdivisions, Commercial, Industrial, Residential Subdivisions *
10 acres or less
$490.00
More than 10 to and including 20 acres
$815.00
More than 20 to and including 50 acres
$1,140.00
More than 50 acres
$1,625.00
Non-Residential Individual Development Site
Individual development 1 acre to and including 5 acres
$400.00
More than 5 acres
$750.00
Multi-Family Development Site (Apartments, Condos, Townhouses)
10 acres or less
$490.00
More than 10 to and including 20 acres
$815.00
More than 20 to and including 50 acres
$1,140.00
More than 50 acres
$1,625.00
A Non-Residential lot within a Common Plan of Development
Any lot 1 acre or greater within a Common Plan of Development
$240.00
Multi-Family Development within a Common Plan of Development
Any lot 1 acre or greater within a Common Plan of Development
$240.00
General Non-Residential/ Grading for Recreational
Any project 1 acre or greater
$240.00
*Fees will be assessed with each phase of development.
 
 
Fees for Abbreviated Erosion & Sediment Control Plans
Single Lot ESC Evaluation
Lots 10 acres or less
$25.00
All New, Single-Family Residential Projects
Any project 1 acre or greater or part of a Common Plan of Development
$65.00
Any Residential Clearing
Any project 1 acre or greater
$65.00
Variance Fee
 
$125.00
 
Post Construction Fee Schedule
Post Construction Fee Schedule
Single Lot Residential
Single Project
$65.00
Residential Development Property Under Construction
For first 5 acres
$65.00
For additional 20 acres or any part thereof
$220.00
For the next 25 acres
$190.00
For all acreage over 50 acres
$125.00
Non-Residential Property Under Construction
For first 5 acres
$315.00
For all acreage over 5 acres (per acre)
$65.00
 
 
SITE INSPECTIONS
Site Inspections for Both Residential and Non-Residential
Sites 1 - 5 acres
$315.00
Sites 6 - 10 acres
$500.00
Sites 11 - 20 acres
$875.00
Sites 21 - 50 acres
$1,125.00
Site larger than 50 acres
$1,500.00
Non-Compliant Sites
Additional inspection fee per
hour for each inspection
required until the site meets
compliance
$65.00
 
   (k)   Complaints. The municipality's authorized agent(s) shall investigate any complaint related to earth-disturbing activities covered by this chapter.
   (l)   Variances.
      (1)   The municipality, with or without the approval of Planning Commission, may grant a variance to these regulations where the owner or his or her appointed representative can show that a hardship exists under which compliance with these regulations is not appropriate, based upon the following:
         A.   That exceptional topographic or other physical conditions exist that are peculiar to the particular parcel of land.
         B.   That the literal interpretation of these regulations would deprive the owner of rights enjoyed by other property owners.
      (2)   Adverse economic conditions or hardship shall not be considered as a valid reason for a variance request to be granted. No variances will be granted where activities occur that will defeat the purposes of these regulations.
      (3)   The request for variance shall be submitted to the Chief Building Official or Village Administrator and shall state the specific variances sought and include sufficient information to justify the granting of a variance.
   (m)   Appeals. Any person aggrieved by any order, requirement, determination, or any other action or inaction by the municipality or its representatives in relation to this regulation may appeal to the Court of Common Pleas. Such appeal shall be made within 30 days of the date of an order or decision and shall specify the grounds for appeal. Such appeal shall be made in conformance with R.C. § 713.11. Written notice of appeal shall be served on the municipality.
   (n)   Violations. No person shall violate or cause or knowingly permit to be violated any of the provisions of this chapter or fail to comply with any of its provisions or with any lawful requirements of any public authority made pursuant to it, or knowingly use or cause or permit the use of any lands in violation of this chapter or in violation of any approval permit granted under this chapter. Violations of these regulations which will result in enforcement actions, include but are not limited to:
      (1)   Failure to install control practices specified in the state and federal permits, or as approved by the municipality.
      (2)   Improper installation of control practices according to Rainwater and Land Development, current edition, and/or as recommended by the manufacturer.
      (3)   Inadequate design and/or unacceptable performance of the control practices as judged by the municipality.
      (4)   Failure to properly maintain control practices put in place as determined by the municipality.
      (5)   Failure to remove control practices after the site has reached final stabilization.
   (o)   Penalties.
      (1)   Violation of any provision of this or any amendment or supplement thereto, or failure to comply with any of the requirements herein shall constitute a misdemeanor. Each day such violation continues shall be considered a separate offense. Any person or persons violating any of the provisions herein shall upon conviction be fined up to one hundred dollars ($100.00) per day the violation exists and, in addition, shall pay all costs and expenses involved in the case.
      (2)   Upon notice from the municipality and/or its authorized agent(s), that work is being done contrary to this chapter, such work shall immediately stop. Such notice shall be in writing and shall be given to the site owner and/or applicant and shall state the conditions under which such work may resume; provided, however, in instances where immediate action is deemed necessary for the public safety or the public interest, the municipality's authorized agent may require that work be stopped upon verbal order pending issuance of the written order.
      (3)   The imposition of any other penalties provided herein shall not preclude the municipality, by or through its Law Director and/or any of its assistants, from instituting an appropriate action or proceeding in a Court of proper jurisdiction to prevent an unlawful development, or to restrain, correct, or abate a violation, or to require compliance with the provisions of this regulation or other applicable laws, ordinances, rules, or regulations, or the orders of the authorized agent(s).
(Ord. 13-030. Passed 10-15-13; Ord. 21-021. Passed 11-16-21.)

1295.09 MAINTENANCE AND REPAIR OF STORMWATER FACILITIES.

   (a)   Maintenance During Construction.
      (1)   The site owner and/or applicant of the land development activity shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the site owner and/or applicant to achieve compliance with the conditions of this local law. Sediment shall be removed from sediment traps or sediment ponds whenever their design capacity has been reduced by 50 percent.
      (2)   The site owner and/or applicant or their representative shall be on-site when construction or grading activity takes place and shall inspect and document the effectiveness of all erosion and sediment control practices. Inspection reports shall be completed every seven days and within 24 hours of any storm event producing 0.5 inches of precipitation or more. The reports shall be delivered to the Stormwater Management Officer and copied to the site logbook.
      (3)   Maintenance easement(s) prior to the issuance of any approval that has a stormwater management facility as one of the requirements, the site owner and/or applicant must execute a maintenance easement agreement that shall be binding on all subsequent landowners served by the stormwater management facility. The easement shall provide for access to the facility at reasonable times for periodic inspection by the Municipality of Grafton to ensure that the facility is maintained in proper working condition to meet design standards and any other provisions established by this local law. The easement shall be recorded by the grantor in the office of the Lorain County Recorder after approval by the legal counsel for the Municipality of Grafton.
   (b)   Maintenance after Construction.
      (1)   The site owner and/or applicant, or operator of permanent stormwater management practices installed in accordance with this chapter shall be operated and maintained to achieve the goals of this chapter. Proper operation and maintenance include, as a minimum, the following:
         A.   A preventive/corrective maintenance program for all critical facilities and systems of treatment and control (or related appurtenances) which are installed or used by the owner or operator to achieve the goals of this law.
         B.   Written procedures for operation and maintenance and training new maintenance personnel.
         C.   Discharges from the SMPs shall not exceed design criteria or cause or contribute to water quality standard violations in accordance with the following criteria:
               BMPs shall be designed such that the drain time is long enough to provide treatment but short enough to provide storage for successive rainfall events and avoid the creation of nuisance conditions. The outlet structure for the post-construction BMP shall not discharge more than the first half of the WQv in less than one-third of the drain time. The WQv is the volume of storm water runoff that must be detained by a post-construction practice as specified by the most recent edition of the Rainwater and Land Development manual.
               Post-construction practices shall be sized to treat 100 percent of the WQv associated with their contributing drainage area. If there is an existing post-construction BMP that treats runoff from the disturbed area and the BMP meets the post-construction requirements of this permit, no additional post-construction BMP will be required. Design information for such facilities such as contributing drainage areas, capacities, elevations, outlet details and drain times shall be included in the SWP3.
Table 4a - Extended Detention Post-Construction
Practices with Minimum Drain Times
Extended Detention Practices
Minimum Drain Time of WQv
Table 4a - Extended Detention Post-Construction
Practices with Minimum Drain Times
Extended Detention Practices
Minimum Drain Time of WQv
Wet extended detention basin 1, 2
24 hours
Constructed extended detention wetland1, 2
24 hours
Dry extended detention basin1, 3
48 hours
Permeable pavement - extended detention1
24 hours
Underground storage - extended detention1, 4
24 hours
Sand & other media filtration extended detention1, 5
24 hours
Notes:
1.   The outlet structure shall not discharge more than the first half of the WQv in less than one-third of the drain time.
2.   Provide a permanent pool with a minimum volume equal to the WQv and an extended detention volume above the permanent pool equal to 1.0 x WQv.
3.   Dry basins must include a forebay and a micro pool each sized at a minimum of 0.1 x WQv and a protected outlet or include acceptable pretreatment and a protected outlet.
4.   Underground storage must have pretreatment for removal of suspended sediments included in the design and documented in the SWP3. This pretreatment shall concentrate sediment in a location where it can be readily removed. For non-infiltrating, underground extended detention systems, pretreatment shall be 50% effective at capturing total suspended solids according to the testing protocol established in the Alternative Post Construction BMP Testing Protocol.
5.   The WQv ponding area shall completely empty between 24 and 72 hours.
 
   (c)   Maintenance Agreements. The Municipality of Grafton shall approve a formal maintenance agreement for stormwater management facilities binding on all subsequent landowners and recorded in the office of the Lorain County Recorder as a deed restriction on the property prior to final plan approval. The maintenance agreement shall be consistent with the terms and conditions of Schedule B of this chapter entitled Stormwater Control Facility Maintenance Agreement. The Municipality of Grafton in lieu of a maintenance agreement, at its sole discretion may accept dedication of any existing or future stormwater management facility, provided such facility meets all the requirements of this chapter and includes adequate and perpetual access and sufficient area, by easement or otherwise, for inspection and regular maintenance.
(Ord. 21-021. Passed 11-16-21.)

1295.10 CONSTRUCTION COMPLETION GUARANTEE.

   (a)   In order to ensure the full and faithful completion of all land development activities related to compliance with all conditions set forth by the Municipality of Grafton in its approval of the stormwater pollution prevention plan, the Municipality of Grafton may require the site owner and/or applicant to provide, prior to construction, a performance bond, cash escrow, or irrevocable letter of credit from an appropriate financial or surety institution which guarantees satisfactory completion of the project and names the Municipality of Grafton as the beneficiary. The security shall be in an amount to be determined by the Municipality of Grafton based on submission of final design plans, with reference to actual construction and landscaping costs as provided by the site owner's and/or applicant's engineer. The performance guarantee shall remain in force until the surety is released from liability by the Municipality of Grafton, provided that such period shall not be less than one year from the date of final acceptance or such other certification that the facility(ies) has been constructed in accordance with the approved plans and specifications and that a one-year inspection has been conducted and the facilities have been found to be acceptable to the Municipality of Grafton.
   (b)   Maintenance Guarantee. Where stormwater management and erosion and sediment control facilities are to be operated and maintained by the site owner and/or applicant or by a corporation that owns or manages a commercial or industrial facility, the site owner and/or applicant, prior to construction, may be required to provide the Municipality of Grafton with a maintenance bond, cash escrow, or irrevocable letter of credit from an approved financial institution or surety to ensure proper operation and maintenance of all stormwater management and erosion control facilities both during and after construction, and until the facilities are removed from operation. If the site owner and/or applicant fails to properly operate and maintain stormwater management and erosion and sediment control facilities, the Municipality of Grafton may draw upon the account to cover the costs of proper operation and maintenance, including engineering and inspection costs.
   (c)   Record Keeping. The Municipality of Grafton may require entities subject to this chapter to maintain records demonstrating compliance with this chapter and provide copy and/or annual updates by March 1st of each year.
(Ord. 21-021. Passed 11-16-21.)