Alliance City Zoning Code
CHAPTER 1168
Drainage
1168.01 PURPOSE.
The intent of this policy is to establish consistent, technically feasible and operationally practical standards to achieve a level of storm water management, and erosion and sediment control that will minimize damage to public and private property and the degradation of water resources, and will promote and maintain the health, safety, and welfare of the residents of the City.
Flooding and streambank erosion in the City are a significant threat to public health and safety and public and private property, and storm water quantity control slows runoff and reduces its erosive force, and flood damage. Therefore, these measures shall be taken to help assure that development site owners control the volume and rate of storm water runoff originating from their property so that surface water and ground water are protected, soil erosion is controlled, and flooding potential is not increased.
1168.02 DISCLAIMER OF LIABILITY.
This policy outlines the basic requirements of Storm Water Management Plans. It is not intended as an all inclusive list of work required to prepare the plans, specifications, reports, and calculations for such projects. The Designer shall follow generally accepted standards for surveyors, architects, and/or engineers.
Neither submission of a plan under the provisions herein, nor compliance with the provisions of these regulations, shall relieve any person or entity from responsibility for damage to any person or property that is otherwise imposed by law.
1168.03 STORM WATER MANAGEMENT REPORT REQUIRED.
All new and redeveloped commercial sites, industrial sites, condominium developments, planned urban developments, and subdivisions are required to submit a Storm Water Management Report to the City Engineer. The Storm Water Management Report must be signed and stamped by a Registered Professional Engineer licensed to practice in the State.
An owner of a development site that was created by demolishing an older existing structure can request, in writing, that the City Engineer exempt him or her from the storm water issues if the total soil surface area being made impermeable is the same or less than the total soil surface area that was impermeable prior to the structure(s) being torn down and removed.
1168.04 GENERAL REQUIREMENTS.
The policies contained herein outline the requirements for a Storm Water Management Report. Not all of the sections of this outline may apply to a proposed development. It will depend on the size of the proposed development, the existing site conditions, and the proposed land use of the development.
These guidelines shall not limit the right of the City Engineer to impose at any time additional, more stringent requirements based on the site circumstances. Nor, shall these guidelines limit the right of the City Engineer to waive, in writing, individual requirements based on the site circumstances.
The Storm Water Management Report should be submitted with the Site Plan for commercial and industrial sites. It should be submitted with the Construction Drawings for condominium developments, planned developments, and subdivisions. Questions regarding the Storm Water Management Report should be directed to the City Engineer.
The Report should contain a description of the existing conditions on site, land usage, ground cover conditions, soil types, etc. The Report should explain the proposed improvements and the intent of the storm water management measures being proposed. The Report should be prepared in a neat and organized manner. The Report should provide maps and drawings, as necessary, to support the Report’s calculations. The Report should verify that the information contained on such maps and drawings corresponds to the information provided in the rest of the Report.
As a minimum general requirement, the proposed storm water management measures shall be designed such that the runoff from the site shall not flood existing or proposed structures, cause the loss of property, endanger individuals, or cause the loss of life.
Upstream runoff from outside the development area should be conveyed through the site as closely as possible with the current runoff conditions. Existing drainage features such as swales, ditches, creeks, and ravines, conveying upstream runoff shall remain. Easements for drainage features shall be provided as outlined herein.
Provide positive grading for runoff for all lots and groups of lots within condominium developments, planned developments, and subdivisions, as well as for the overall site. Runoff for all development sites and individual lots within a development shall be conveyed in an approved manner to an adequate and appropriate discharge point (except as provided for permanent retention areas).
Wherever possible and practical, a developer is encouraged to use measures to slow the storm water runoff rate by increasing friction. Some examples are discharging roof water to vegetated areas on site, using grass and rock-lined drainage channels, and creating grass strips between areas of sheet flow runoff such as parking lots. Additionally, developers are encouraged to reduce the total runoff volume by means of infiltration. Some examples are infiltration basins, infiltration trenches, dry basins, and the use of retention basins instead of detention basins.
1168.05 STORM SEWER SYSTEMS AND ROADWAY DRAINAGE.
Storm Sewer Systems and Roadway Drainage including catch basins, pipes, culverts, swales, ditches, and other open channels shall be designed in accordance with the latest editions of the Ohio Department of Transportation’s Location and Design Manual, Volume Two - Drainage Design and Construction and Material Specifications.
(a) Provide spreadsheet calculations for the storm sewer systems. All storm sewer systems shall be designed to flow just full for a 10 year frequency storm except where more stringent requirements are noted in the Location and Design Manual. For roadway pipe design, check the hydraulic grade line does not exceed the grate elevations based on a 25 year frequency storm.
(b) Provide spreadsheet calculations for the inlet spacing and pavement spread. Allowable pavement spread shall be six feet for a 10 year frequency storm.
(c) Open channels such as swales, ditches, channels, and ravines which are used as part of the Major Flood Path, as described in Section 1168.06, shall have more stringent design requirements.
(i) Provide channel linings and bank stabilization to prevent erosion in all open channels. Adhere to minimum ditch slope standards and maximum velocity standards outlined in the Location and Design Manual.
(ii) Provide easements over open channels as described in Section 1168.08.
(d) Provide a Storm Sewer Systems and Roadway Drainage drawing. Perform field surveying as necessary to insure that this drawing is an accurate representation of actual field conditions. The scale of this drawing must be sufficient to clearly present the following information:
(i) Existing and proposed elevation contours at an interval of two feet or less. Contour lines shall be labeled frequently enough to be easily read and interpreted.
(ii) All of the individual surface areas that drain to each intercepting structure of the storm sewer system must be outlined. The areas must be numbered or labeled to match the computer spreadsheet.
(iii) The path used to calculate the time of concentration for each individual drainage area where the time of concentration is greater than 10 minutes. Indicate the types of flow and provide calculations.
(iv) Indicate various types of surface areas within each of the individual drainage areas that have different runoff coefficient values. Use different colors of shading or another method as long as the information can be easily understood and read. Show how the weighted runoff coefficient for each individual drainage area was calculated.
(e) An adequate downstream outlet must be provided for all proposed storm sewers, such as an existing ditch, stream, river, storm sewer, pond or lake. The downstream outlet must be able to accommodate the flow of storm water from the proposed storm sewer system.
(f) Provide headwalls, energy dissipaters, riprap, erosion control mats, and other measures, as necessary, at all outlets to prevent erosion.
(g) For storm sewers intended to become publicly owned (such as storm sewers within roadways for a proposed subdivision), the following apply:
(i) Storm sewers less than or equal to 24 inch diameter shall be constructed using high strength vitrified clay pipe, reinforced concrete pipe, or PVC with bell and spigot joints.
(ii) Storm sewers greater that 24 inch diameter shall be constructed using high strength vitrified clay pipe or reinforced concrete pipe only.
(iii) All sewers within dedicated (or proposed dedicated) right-of-way or within a one-to-one slope from the right-of-way shall use crushed stone or gravel, ODOT 703.11, Type 1 backfill that meets the gradation of ODOT 304, or other approved premium backfill, as approved by the City Engineer.
(iv) Use ODOT MH-3 with City standard castings. Alternatively, use City brick manhole standards with City standard castings.
(v) Use City of Alliance standard catch basins and castings.
(vi) Storm sewer mains shall be designed to be in the center of one lane of pavement where possible (for example: sanitary sewer down the middle of road, waterline in the lane on one side of the road, and storm sewer in the lane on the other side of the road). Any variance from this must be approved by the City Engineer.
(vii) If it is necessary, the City may approve sewers off road or through a yard. In such instances, an easement with a minimum width of 20 feet shall be required. (Wider easements may be required for large or deep sewers, or based on terrain and topography.) Provide a gravel access drive, or gravel base topped with topsoil, per City standards, for the length and width of the easement for maintenance vehicle access.
(viii) Where culverts are required under the roadway, they shall extend across the entire right-of-way of the street. The minimum pipe diameter of a culvert shall be 18 inches. Headwalls shall be required.
(ix) Driveway culverts shall have a minimum length of 20 feet, and a minimum diameter of 12 inches. The driveway culverts shall be laid so as to maintain the flow lines of the ditch or gutter. Headwalls may be required by the City Engineer.
(h) Roof Drains and Sump Pump Discharges. (Ord. 35-07. Passed 3-19-07.)
(i) Roof drains may be discharged through the curb onto the street. They may tie directly into the storm system by an approved wye or tap connection, or by an approved core into a catch basin. Roof drains may be run to a designed dry well, infiltration basin, or infiltration ditch. They may discharge onto the ground using splash blocks. The downspouts must be run far enough away from the building to meet building codes and the ground must have positive grade away from the building. Roof drains are not permitted to discharge on the ground where the flow may cause flooding to adjacent properties, nor are they permitted to discharge across the back of any public sidewalk, street, or other public ground within the City.
(Ord. 45-09. Passed 9-8-09.)
(ii) Sump pumps may be discharged in the same manner as roof drains, except they are not permitted to discharge through the curb onto the street. Sump pump discharges tied directly to the storm sewer must be accounted for in the design of the storm sewer system.
1168.06 MAJOR FLOOD PATH.
(a) The intent of planning a major flood path is to ensure that the storm water runoff, which exceeds the capacity of the storm sewer system, shall have a route to follow which will not cause the loss of property or life.
(b) The combination of the major flood path and sewer/ditch system shall have the capacity to carry runoff from a 100-year frequency storm. Where the street is designated as the major drainage way, the depth of flow shall not exceed eight inches at the face of curb. When the major drainage way is located outside a street right-of-way, utility and floodway easements shall be provided and a grading plan is to be submitted with detailed elevations showing the flood being contained in this area.
(c) Minimum garage, first floor and minimum window opening elevations along all 100-year flow routes are to be set by the design engineer. These elevations are to be a minimum of one foot above the 100-year water elevation. These elevations are to be clearly labeled on the plans and the subdivision plat.
(d) Since streets may be used as a routing path, the major system must be taken into account in the initial design of the development. It shall be designed in such a manner as to direct the storm water into the detention or retention area. Calculations indicating the capacity of the Major Flood Path and the excess storm water runoff from the sewer/ditch system shall be provided.
1168.07 STORM WATER RUNOFF CONTROL STANDARDS.
(a) Storm Water Runoff from a developed site such shall be controlled to meet the following criteria:
(i) Runoff Rate: The peak runoff rate from the development area shall not be greater after development than it was before development. The applicant shall provide calculations proving no increase in the runoff rates from the two, five, 10, 25, 50, and 100 year storms with a 24 hour duration.
(ii) Runoff Rate During Construction: The peak runoff rate from the development area shall not be greater during construction than it was before development. This includes time of clearing and grading the entire site and periods when lots are stripped for building construction. The applicant shall provide calculations proving no increase in the runoff rates during construction from the two, five, and 10 year storm with a 24 hour duration.
(iii) Runoff Volume: Where there is an inadequate receiving stream, when discharging into the City storm sewer system, or where there is sufficient potential for downstream flooding, as determined by the City Engineer, the site runoff rate may be restricted further based on the runoff volumes. Increases in the runoff volume shall be offset by further restricting runoff rates. Based on the increase in runoff volume, the applicant shall determine the critical storm for the development area. The runoff rate from the critical storm shall be restricted to the two year pre-development storm runoff rate. The critical storm shall be calculated as follows:
(1) Determine the total volume of runoff from either the one-year or the two-year frequency, 24-hour storm, occurring on the development area before and after development. (Ord. 35-07. Passed 3-19-07.)
(2) From the volumes in paragraph (1) determine the percent of increase in volume of runoff due to development according to the equation ((Q after minus Q before) divided by Q before) x 100 and, using this percentage, select the critical storm from the following table: (Ord. 45-09. Passed 9-8-09.)
CRITICAL STORM SELECTION
The Percentage Increase in volume of Runoff is:
Equal To Or Greater Than | And Less Than | The 24-Hour "Critical Storm" for Discharge will be |
0 | 20 | 2 years |
20 | 50 | 5 years |
50 | 100 | 10 years |
100 | 250 | 25 years |
250 | 500 | 50 years |
500 | --- | 100 years |
(iv) Detention or Retention Basin Exemption for Redevelopment or for Expansion of Existing Facilities:
(1) For any development regulated by this ordinance, the construction of a detention or retention basin may not be required for the development if the post-development peak discharge for a 100 year frequency 24 hour storm increases the existing peak discharge by one cubic foot per second or less using the Soil Conservation Service method of calculation or other method approved by the City Engineer. The City Engineer can waive this requirement if existing storm sewers and drainage structures can safely handle the expected increase in flow.
(2) Only one exemption will be allowed per parcel. Any subsequent expansion must provide for detention or retention and must include the previously exempted area.
(v) The flow of storm water from the developed site must not cause flooding to any proposed buildings within the development or to existing downstream homes, buildings, places of business or other such improvements.
(vi) Surface water draining from an existing watershed area cannot be diverted, channeled, piped or otherwise rerouted into another watershed area unless approved by the City Engineer.
(b) Two methods for calculating storm water runoff volumes and control measures are approved. They are the Modified Rational Method and the Soil Conservation Service Method. Either may be used for sites up to six acres in size. The Soil Conservation Method must be used for all sites six acres or larger.
(c) Provide a drainage area map (or maps) for the pre-developed and post-developed sites. Perform field surveying as necessary to insure that this drawing is an accurate representation of actual field conditions. The scale of this drawing must be sufficient to clearly present the following information:
(i) Existing and proposed elevation contours at an interval of two feet or less. Contour lines shall be labeled frequently enough to be easily read and interpreted.
(ii) Hydrologic boundaries of watersheds, including areas outside the proposed development that flow into the project area.
(iii) Points of analysis, or the location where the drainage is being evaluated, for each watershed.
(iv) Path used to calculate the time of concentration for each watershed. Indicate types of flow and provide calculations.
(v) Delineate and label the types of land use, surface features, ground cover, soil types, etc. used to determine the runoff coefficients or curve numbers for the project areas.
(vi) Show areas of existing ponds, springs, wetlands, streams, and hydrologically sensitive areas within 1,000 feet of the proposed development.
(vii) Show existing and proposed storm water features such as ditches, swales, inlets, pipes, roadways, etc. within 500 feet of the proposed development, unless the ultimate outfall system is a lesser distance.
(viii) Show the proposed development layout.
(d) Calculations.
(i) Provide routing calculations and their corresponding inflow and outflow hydrographs for the two-year storm up through the 100 year storm. Prepare a summary table of results of the routing calculations. The table shall include, at a minimum, peak inflow, peak outflow, water surface elevations, and storage volume requirements.
(ii) Provide pond volume vs. elevation summaries.
(iii) Provide calculations for the inlet/outlet works including weirs, orifices, culverts, spillways, grates, etc. Show their capacities and stage-discharge calculations, including tailwater assumptions.
(iv) Verify capacities of receiving drainage features such as ditches, storm sewers, pond, streams, etc. to verify sufficient capacity to accommodate the runoff of the development. The receiving drainage feature must be approved by the City. Check all storms with a return frequency of 100 years or less. Determine flooding potential for surrounding homes, commercial businesses and industries.
(v) Provide runoff coefficients or curve number calculations for each watershed or sub-area, including impervious calculations.
(vi) Provide time of concentration calculations for each watershed or sub-area.
(vii) Calculate hydraulic grade line for outlet structures with pipes.
(viii) Determine velocities of discharged waters and show details to control erosion.
(ix) Provide calculations for water quality and erosion control measures as required for the Storm Water Pollution Prevention Plan (SWP3) (See Section 1168.09).
(x) Provide narratives, as needed, to describe the methods, assumptions, formulas, and intent of the calculations.
(e) Detention Basins.
(i) The minimum length to width ratio of the basin shall be two-to-one.
(ii) The grading of the detention basin shall be such that it reflects the surrounding topography. The embankment slopes for the detention basin should be four feet horizontal to one foot vertical preferred or a maximum of two feet horizontal to one foot vertical.
(iii) The maximum water depth shall not exceed 10 feet.
(Ord. 35-07. Passed 3-19-07.)
(iv) The minimum top width of the side embankments shall be five feet for non- vehicular traffic and 12 feet for vehicular traffic. The embankment shall be set at an elevation at least 12 inches above the emergency spillway and at least 18 inches above the peak 100 year pond elevation.
(Ord. 45-09. Passed 9-8-09.)
(v) Outlet structures using weir type flow regulators are preferred to reduce the risk of clogging.
(vi) Principal outlet (or outlets in a multi-stage configuration) shall have the capacity to pass the 100 year design storm flow.
(vii) Outlet pipes shall have a minimum diameter of six inches. Orifice plates must be used for restrictions of smaller diameter. Consideration should be given to removable trash racks or other means to prevent clogging.
(viii) Access to entire outlet structure for maintenance and inspection shall be provided and shall follow current OSHA standards.
(ix) An emergency spillway shall be provided and set at an elevation equal to 6 inches above the peak 100 year pond elevation. The spillway length shall be 10 feet at its narrowest point (may be less for very small ponds, as approved by the City). The location of the emergency spillway shall be such that its overflow can be directed to an acceptable location. Permanent erosion control measures at the emergency spillway may be required by the City based on potential erosion at the site.
(x) Detention structures shall be graded to drain to the outlet structure. The minimum grade in the pond shall be two percent. No paved gutters shall be used as the low flow channel.
(xi) A permanent easement shall be provided a minimum of 20 feet beyond the detention basin’s outside perimeter. See Section 1168.08.
(xii) A 20 foot permanent easement shall be provided from the pond to the closest public street or alley. Provide a gravel access drive, or gravel base topped with topsoil, per City standards, for the length and width of the easement. See Section 1168.08.
(xiii) All pipes through the embankment shall have anti-seep collars.
(xiv) Soils borings and testing shall be performed by an approved soils testing laboratory. Submit a report certifying suitability of the soils on-site for embankment and basin construction. If soils are highly permeable, a six inch clay layer, or other measures may be required.
(xv) Where the detention basin outlet flows onto private property or onto property owned by a government other than the City (such as the State of Ohio right-of-way), a discharge easement agreement (or Government permit) with that property owner must be prepared and executed. Proof of such easement shall be presented prior to the City’s approval of the drainage.
(Ord. 35-07. Passed 3-19-07.)
(xvi) Show dimensions of the detention basin on the plans that meet or exceed calculated pond values.
(Ord. 45-09. Passed 9-8-09.)
(f) Retention Basins. All of the criteria for the Detention Basins shall apply, with the following additional requirements:
(i) The grading of the Retention Basin shall be such that it reflects the surrounding topography. The embankment slopes for the Retention Basin shall be four feet horizontal to one foot vertical leading to the pond. It shall terminate at an aquatic safety bench.
(ii) The aquatic safety bench shall be a minimum of 10 feet wide with a maximum slope of three percent. The aquatic safety bench shall have a maximum water depth of one foot. Side slopes beyond the aquatic safety bench shall not be steeper than two feet horizontal to one foot vertical under the water.
(iii) Additionally, the developer or designer may add a second dry safety bench meeting the same width and slope requirements. Having a dry safety bench does not eliminate the requirement of an aquatic safety bench.
(iv) Retention basins must have a minimum of 10 acres draining to pond, or as approved by the City.
(v) Provide aeration equipment of adequate size for the pond to prevent the water from becoming stagnant.
(vi) Provide piping and valves necessary to completely drain the pond periodically for maintenance.
(g) Bio-Retention basins may be required whenever the proposed detention/retention facility discharges into an existing wetland, a creek or as required by the City. The design of the Bio-Retention basin is to follow the guidelines shown in Design of Stormwater Wetland Systems, prepared by Thomas R. Schueler. The manual can be obtained from the Metropolitan Washington Council of Governments. The allowable side slopes shall follow the Detention Basin requirements of these standards. The plant materials shall be suitable for the environment created.
(h) In certain applications, alternative detention facilities may be permitted and encouraged. These methods may be especially useful on small sites or where the increase in runoff is small. They may also be useful in conjunction with these methods described above. Requests for alternative detention facilities shall be submitted to the City within the appropriate design standards.
(i) Infiltration basin, dry wells, and infiltration ditches.
(1) Soils borings and testing shall be performed by an approved soils testing laboratory. Submit a report certifying the suitability of the soils on-site for infiltration.
(2) Infiltration measures must make provisions for overflow to a suitable area.
(ii) Underground Detention Tanks or Pipes
(1) May be used for commercial or industrial sites only.
(2) Must provide access for inspection and maintenance.
(3) Must have sufficient load bearing capacity.
(4) Must have a minimum bottom slope of 0.5 percent.
(iii) For very small sites (under two acres) detention in parking lots using catch basins.
(1) A maximum water depth of eight inches in parking areas may be used. Beyond such depth, an overflow or outlet must be provided.
(2) Maximum water depth shall not exceed the finished floor elevations of existing or proposed structures.
(3) Slopes for parking lots used for this purpose shall be a minimum of one percent and a maximum of 10 percent.
(iv) If none of these practices are applicable, the City reserves the right to waive storm water management requirements for developments under two acres. This may only be done after the designer has shown that all other options are not feasible.
(i) Maintenance of Storm Water Management Practices.
(i) An as-built survey must be completed by qualified registered engineer or surveyor and submitted to the City showing the location, detention volume (include depth and capacity) of all stormwater practices.
(ii) The City Engineer and/or Safety-Service Director shall approve an inspection and maintenance agreement binding on all subsequent owners of land served by the planned storm water management practices before the City accepts the final plat of the proposed project.
(iii) All inspection and maintenance agreements shall do the following:
(1) Designate the party responsible for maintenance of structural and nonstructural storm water management practices including mowing and ensuring outlet structures are clear and in good repair. Unless otherwise approved by the City, this shall be an entity of common ownership within the proposed subdivision (such as an Association) or the owner on an industrial or commercial site.
(2) Prohibit unauthorized alterations of structural and nonstructural storm water management practices.
(3) Provide access to storm water management practices for inspection by the City to document the condition of the practices. Authorize the City to make corrections to the facility, if deemed necessary, and assess the affected property owners. See Sec. 1168.07(j) below.
(iv) The location, dimensions, and bearing (including the depth and capacity) of all storm water management practices shall be incorporated on the final plat, prior to approval by the City, and reference thereon shall be made to the entity or individual(s) responsible for maintenance.
(j) Inspection of Storm Water Management Practices.
(i) The City may inspect storm water management practices periodically.
(ii) Upon finding a malfunction or other need for maintenance, the City shall notify the responsible party of the need for maintenance.
(iii) Upon notification, the responsible party shall have 15 working days, or other time stipulated by the City, to make repairs.
(iv) Should repairs not be made within this time, or a plan approved by the City for these repairs not be in place, the City may undertake necessary repairs and assess the responsible party.
1168.08 EASEMENTS.
(a) Future access to floodplains, flood control facilities, runoff drainage ditches and channels, runoff storage facilities, storm sewers and other drainage ways and structures, as required by the City Engineer, shall be secured by means of easements.
(b) The easements shall be recorded in the name of the entity responsible for maintenance (in single-family residential developments, the homeowners’ association.)
(c) The easements shall be restricted against the planting within said easement of trees, shrubbery or planting with woody growth characteristics, and against the construction therein of buildings, accessory buildings, fences, walls or any other obstructions to the free flow of storm water and the movement of inspectors and maintenance equipment. It shall also be restricted against the changing of final grade from that described by the grading plan.
(d) Easements shall not be less than 20 feet in width, with a minimum 10 foot width on either side of the centerline. Easements over storm sewers or open channels wider than three feet shall be 20 feet in width plus the width of the drainage feature, rounded up to the nearest five foot increment.
(e) Easement shall provide access to the closest public street or alley.
(f) Access easements and easements over storm sewers where it is reasonably expected that maintenance vehicles will require access, shall provide a gravel access drive, or gravel base topped with topsoil, per City Standards, for the length and width of the easement.
(g) Provide discharge easements for public roadway runoff to enter into and through the runoff storage system facilities.
1168.09 STORM WATER POLLUTION PREVENTION PLAN (SWP3) AND EPA PERMIT REQUIRED.
(a) All development sites whose land disturbance is one acre or more require a Storm Water Pollution Prevention Plan to be submitted to the Stark Soil and Water Conservation District, 2650 Richville Dr. SE, Ste. 103, Massillon OH 44646.
(i) Include an approved copy of the SWP3 plan with construction plans and/or with the Storm Water Management Report to the City. The SWP3 plan must be approved prior to the start of any soil disturbing activities and before the Storm Water Management Report can be approved.
(ii) Calculations for the water quality and erosion control measures required for the SWP3 plan shall be included as a section in the Storm Water Management Report.
(iii) Soil erosion and sediment control practices used to satisfy these standards shall meet the standards and specifications in the current edition of the Ohio Rainwater and Land Development manual, NRCS Field Office Technical Guide for Stark County or the Ohio EPA, whichever is most stringent.
(b) A Notice of Intent (NOI) for requesting coverage under an Ohio EPA General Permit to discharge construction site stormwater is required to be filed with the OEPA at least 45 days prior to the start of construction, per the Ohio Water Pollution Control Act - 33 U.S.C. 1251.
1168.10 COMPLIANCE WITH OTHER RULES AND REGULATIONS (WHERE APPLICABLE).
(a) Ohio Dam Safety Laws: The provisions of the Ohio Dam Safety Laws shall be followed. Proof of compliance with the Ohio Dam Safety Law administered by the ODNR Division of Water shall be, but is not limited to, a copy of the ODNR Division of Water permit number or a copy of the project approval letter from the ODNR Division of Water or a letter from the site owner explaining why the Ohio Dam Safety Law is not applicable. The written proof will be provided to the City Engineer before the Storm Water Management Report can be approved.
(b) NPDES Permits: The provisions of the National Pollutant Discharge Elimination System (NPDES) Permits, issued by the Ohio EPA shall be followed. Proof of compliance shall be, but is not limited to, a copy of the Ohio EPA NPDES Permit number or a letter from the site owner explaining why the NPDES Permit is not applicable. The written proof will be provided to the City Engineer before the Storm Water Management Report can be approved.
(c) Federal and State Wetland Permits: The provisions of the U.S. Army Corps of Engineers dredge and fill permits for federally-protected wetlands shall be followed. The provisions of Ohio EPA’s Isolated Wetlands Permits shall also be followed. Wetlands and other waters of the United States shall be delineated by protocols accepted by the US Army Corps of Engineer and the Ohio EPA at the time of the application of these regulations. Written proof of compliance with both permit programs will be provided to the City Engineer before the Storm Water Management Report can be approved. Proof of compliance shall be, but is not limited to, the following:
(i) A copy of the US Army Corps of Engineer Individual Permit, if required for the project, showing project approval and any restrictions that apply to site activities, or
(ii) A site plan showing that any proposed fill of waters of the United States conforms to the general and specific conditions specified in the applicable Nationwide Permit; or
(iii) A letter from the site owner verifying that a qualified professional has surveyed the site and found no wetlands or other waters of the United States. Such a letter shall be noted on site plans submitted to the City.
(d) Designs shall conform to all applicable City codes, policies, regulations, and Ordinances.