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HomeMy WebLinkAbout1998-OR-36 STORM DRAINAGE, EROSION, AND SEDIMENT CONTROL ORDINANCE JEFFERSONVILLE, INDIANA JUNE 1998 CITY OF JEFFERSONVILLE, INDIANA CITY-COUNTY BUILDING 501 EAST COURT AVENUE JEFFERSONVILLE, INDIANA 47130 1998 DRAINAGE BOARD Tom Locke, President Ken Johnson, Vice President Charles White, Secretary Les Kavanaugh Skip Leonard Grant Morton Bob Roederer Robert L. Miller, City Engineer Jim P. Urban, City Planner Pat Larr, Clark County Soil Conservation Service BOARD OF PUBLIC WORKS AND SAFETY Thomas R. Galligan, Mayor, President Robert L. Miller, Member Jim P. Urban, Member C. Richard Spencer, Clerk Treasurer Anne Marie Sedwick Galligan, City Attorney CITY COUNCIL Veronica Coniin, President Ron Ellis, Member Donna Frantz, Member John Perkins, Member Peggy Wilder, Member Andrew Williams, Member Barbara Wilson, Member 1998 PLAN COMMISSION Hal Kovert, President Edwin Voyles, Vice President Emma Jean Coombs, Member Ronald Ellis, Member Lawrence Gessner, Member Janie Grimes, Member Clark Miles, Fire Marshall Sharon Rudd, Member Paul A. Thompson, Member William Thornley, Member Girard Vorgang, Member Anne Marie Sedwick Galligan, Attorney Gelsena Smith, Secretary Jim Urban, Director of Planning and Development 1998 PLAT REVIEW COMMITTEE Edwin Voyles, President Janie Grimes, Member Ken Johnson, Member Tom Locke, Member Bob Roederer, Member Jim Urban, Staff Member TABLE OF CONTENTS CHAPTER 1. GENERAL PROVISIONS 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.I0 Title .......................................................................................... 4 Purpose ...................................................................................... 4 Applicability ................................................................................ 4 Conflicting Ordinances ................................................................... 4 Policy ........................................................................................ 4 Permits for Construction in Floodway ................................................. 5 Wetlands .................................................................................... 5 Adequate Drainage Outlets .............................................................. 5 Compliance with 327 IAC 15-5. ........................................................ 6 Compliance ................................................................................. 7 CHAPTER 2. DEFINITIONS 2.1 2.2 Interpretation of Terms or Words ...................................................... 7 Definitions .................................................................................. 7 CHAPTER 3. DRAINAGE, EROSION, AND SEDIMENT CONTROL PLAN PROCEDURES 3.1 Information Requirements ............................................................. 12 3.2 Site Plan & Erosion and Sediment Control Plan Requirements ................. 12 3.3 Submittal and Consideration of Plans ................................................ 14 3~4 Determination of Runoff Quantities .................................................. 14 3.5 Amount of Runoff to be Accommodated by Various Parts of Drainage Facility ................................................... 15 3.6 Drainage Easements ..................................................................... 16 CHAPTER 4. STORM SEWER DESIGN STANDARDS 4.1 Hydraulic Capacity ............~ ......................................................... 16 4.2 Minimum Size ............................................................................ 16 4.3 Grade ......... ~ ...................................................... , ....... } ............. 16 4:4 Alignment ................................................................................. 17 4.5 Manholes .................................................................................. 17 4.6 Inlets ........................ ~ ................................... ; ....... ::..; .............. 17 4.7 Workmanship ............................................................................ 18 4.8 Materials .................................................................................. 18 4.9 Pipe Bedding, Backfill and Surface Restoration ................................... 18 4.10 Special Hydraulic Structures fn:8705\sc~s~o.ooclsm] 1 CHAPTER 5. OPEN CHANNEL DESIGN STANDARDS 5.1 Channel Cross Section and Grade ............................... ..................... 19 5.2 Side Slopes ............................................................................... 19 5.3 Channel Stability ........................................................................ 20 5.4 Drainage of Open Channels ........................................................... 20 5.5 Appurtenant Structures ................................................................. 20 5.6 Disposition of Spoil Material .......................................................... 20 5.7 Materials .................................................................................. 20 CHAPTER 6. STORM WATER DETENTION 6.1 Acceptable Detention Methods ........................................................ 21 6.2 Detention Facility Design .............................................................. 21 6.3 Allocation of Detention ......................................................................... 21 6.4 Determination of Storage Volume - Rational Method ............................ 21 6.5 Determination of Storage VolUme - Other Methods .............................. 22 6.6 General Detention Basin Design Requirements .................................... 22 6.7 Dry Bottom Detention Basin Design Requirements ............................... 23 6.8 Wet Bottom Retention Basin Design Requirements ............................... 23 6.9 Rooftop Storage .......................................................................... 24 6.10 Parking Lot Storage ..................................................................... 24 6. I 1 Facility Maintenance Responsibility ................................................. 24 6.12 Joint Development of Control Systems .............................................. 24 6.13 Allowance for Sedimentation .......................................................... 24 6.14 Detention Facilities in a Floodplain .................................................. 25 CHAPTER 7. SOIL EROSION AND SEDIMENTATION CONTROL 7.1 7.2 7.3 7.4 General Provisions Design Criteria, Standards and Specifications for Erosion Control Measures ............................................................. 26 Maintenance of Erosion Control Measures .........................................26 Control of Erosion and Sediment during Land Disturbing Activities .......... 26 CHAPTER 8. ACCESSORY DRAINS 8.1 SUmp Pumps ................................ .... 29 8.2 Down Spouts ............................................................................. 29 8.3 Footing Drains ........................................................................... 29 8.4 Basement Floor Drains ......................, .......................................... 29 CHAPTER 9. ADMINISTRATIVE REQUIREMENTS 9.1 Certification Required .................................................................. 29 9.2 Changes in Plans ........................................................................ 30 9.3 Disclaimer of Liability ................................................................. 30 9.4 Corrective Action ........................................................................ 31 9.5 Repealer ................................................................................... 31 9.6 Exempt Projects ......................................................................... 31 9.7 Enforcement .............................................................................. 31 9.8 Effective Date of Ordinance ..................... ~ ..................................... 32 APPENDIX A: SYMBOLS FOR USE ON EROSION/SEDIMENT CONTROL PLAN SITE MAPS ................................................. 33 CHAPTER I GENERAL PROVISIONS 1.1 Title This ordinance will be known and may be cited and referred to as the "Storm Drainage, Erosion Control, and Sediment Control Ordinance of the City of Jeffersonville. Indiana" and will hereafter be referred to as "this ordinance". 1.2 Purpose It is the purpose of this ordinance to reduce the hazard to public health and safety caused by excessive storm water runoff and erosion: to reduce the economic hardships caused by excessive storm water runoff and erosion; and to protect, conserve, and promote the orderly development of land and water resources within the regulated area. 1.3 Applicability This ordinance applies to all development which requires official review and approval of any of the following agencies of the City of Jeffersonville: Plan Commission or its Plat Review Committee, Board of Zoning Appeals, Board of Public Works and Safety, City Engineer, or Building Commissioner. Projects that consist of a single family dwelling, a two-family dwelling, or their accessory structures are not subject to these requirements. Recognizing that land-disturbing activities may cause soil loss, siltation, and degradation of natural resources, the erosion control standards of this ordinance are . applicable to all land-disturbing activities that are necessary for any development regulated by this ordinance. 1.4 Conflicting Ordinance The provisions of this ordinance are additional requirements to minimum standards required by other ordinances of the City, particularly Section 155.46, Storm Drainage, of the Subdivision Control Regulations, Ordinance 96-OR-28, dated June 4, 1996, or its latest revision. In the case of conflicting requirements, the most restrictive apply. 1.5 Policy Streams and drainage channels serving the City of Jeffersonville may not have sufficient capacity to receive and convey storm water runoff resulting when land use changes from underdeveloped or agricultural use to a more urbanized use. In addition, deposits or sediment from developments during and after construction can reduce capacities of storm sewers and drainage facilities and result in damages to receimng lakes and streams. Therefore, the City of Jeffersonville Drainage Board must require that all new development, redevelopment and other new construction in the City of Jeffersonville store storm water runoff and provide for its controlled release, except as exempted in Section 1.3. The storm water release rate of a one hundred (100) year storm event from development, redevelopment, and new construction must not exceed the storm water runoff from a ten (10) year storm event from the land area prior to the new development, redevelopment, or new construction or the capacity of its drainage outlet, whichever is more restrictive. There may be certain circumstances where detention is not justified or may be detrimental to the overall drainage basinl The Drainage Board may waive detention requirements in these cases. 1.6 Permits For Construction In A Floodway 1.7 The 1945 Flood Control Act (Indiana Code 13-2-22) of the State of Indiana prohibits the construction of abodes or residences in or on a floodway. Prior approval of Department of Natural Resources is required for any type of construction, excavation, or filling in or on a floodway. All applications made to, and granted approval by, the Department of Natural Resources do not in any way relieve the owner of the necessity of securing easements or other property rights, permits or approvals from affected property owners and local, state, and federal agencies. Wetlands Landowners and/or developers must notify and make application to all appropriate state and federal agencies with authority for wetland protection. In cases where federal or state jurisdictional wetlands have been determined to exist, those wetland areas and boundaries must be indicated on preliminary and final drainage plans. The Board will not make determinations of the accuracy of delineation or extent of jurisdictional wetlands. Approvals required by this ordinance may be deferred until wetland-related approvals have been obtained. 1.8 Adequate Drainage Outlets All projects subject to this ordinance must provide drainage outlets whose adequacy is based upon the following standards: ho Use of the outlet will not increase the velocity or rate of outflow above that allowed by this ordinance; Bo The outlet must be approved by all involved regulatory agencies including the Board; and C. Use of the outlet will not cause hardship or compound existing problems. The following outlets will generally not be deemed to be adequate: A. An outlet that is not legally and physically accessible and maintainable; Overland flow that is not a watercourse as def'med by this ordinance; C. Existing or future city roadside ditches, unless specifically approved; D. Agricultural field tiles for surface water, and Railroad side ditches without adequate improvements, unless specifically approved. 1.9 Compliance with 327 IAC 15-5 All land-disturbing activities that disturb five (5) acres or more in total must comply with 327 IAC 15-5 (Rule 5) "Storm Water Runoff Associated With Construction Activity." It is the responsibility of the landowner or developer to determine if this role applies to his/her project. The Board will make no determination of the applicability of this role to individual projects. Copies of Notice of Intent (NOI) letters must also be filed with the Jeffersonville City Engineer's Office prior to commencement of the land-disturbing activity. 1.10 Compliance In addition to the requirements of this ordinance, compliance with the requirements set forth in other applicable City ordinances with respect to submission and approval of primary and secondai'y subdivisions, site plan review, improvement plans, building and zoning permits, construction inspections, appeals, and similar matters, and compliance with applicable State of Indiana statutes and regulations, is required. fn:8708\sae*e°'a°el~mI 6 CHAPTER 2 DEFINITIONS 2.1 Interpretation of Terms or Words For the purpose of this ordinance, certain terms or words are defined. The words and terms used must be interpreted as folloWs: 1. The word "person" includes a firm, association, organization, partnership, trust, company, corporation, or other legal entity, as well as an individual; 2. The present tense includes the future tense, the singular number includes the plural, and the plural number includes the singular; 3. The word "must" is a mandatory requirement; the word "may" is a permissive requirement; the word "should" is a preferred requirement; 4. The words "used" or "occupied" include the words "intended, designed, constructed, converted, altered, or arranged to be used or occupied"; 5. The word "lot" includes the words "tract, plot or parcel"; and 6. Any word or term not defined herein must be given a meaning found in a standard English dictionary. 2.2 Definitions For the purpose of this ordinance, the following definitions apply: 1. BOARD: The Drainage Board of the City of Jeffersonville, Indiana. 2. CHANNEL: A natural or artificial watercourse which periodically or continuously contains moving water or which forms a connecting link between two (2) bodi6s of water. It has a defined bed and banks, which serve to confine the water. 3. COMPENSATORY STORAGE: An artificial volume of storage within a floodplain used to balance the loss of natural flood storage capacity when artificial fill or structures are placed within the floodplain. 4 o 10. 11. 12. 13. 14. 15. CULVERT: A closed conduit used for the passage of surface drainage water under a roadway, railroad, canal or other impediment. DETENTION STORAGE: The temporary detaining or storage of storm water in storage basins, under predetermined and controlled conditions. DRAINAGE AREA: The area from which water drains to a point of consideration. DRY BOTTOM DETENTION BASIN: A drainage facility constructed to restrict the runoff of stormwater to a prescribed maximum rate, and to detain for a specified period of time the excess waters that accumulate upstream from the outlet. The facility is designed to be completely dewatered after having provided its planned detention of runoff during a storm event. EROSION: The detachment and movement of soil, sediment or rock fragments by water, wind, ice or gravity. EROSION AND SEDIMENT CONTROL MEASURE: A practice or a combination of practices to control erosion and resulting off-site sedimentation. EROSION AND SEDIMENT CONTROL PLAN: A written description and drawings of pertinent information concerning erosion and sediment control measures designed to meet the requirements of this ordinance. FLOOD ELEVATION: The maximum level of high waters for a flood of a given return period and rainfall duration. FLOOD OR FLOODWATER: Water that overflows the banks of a lake or watercourse. FLOOD HAZARD AREA: Any floodplain, floodway, floodway fringe, or any combination which is subject to inundation by the regulatory flood elevation or any floodplain as delineated by Zone A on the current Flood Hazard Boundary Map of the Federal Emergency Management Agency. FLOODPLAIN: The area adjoining the river or stream that has been or may be covered by floodwaters. It consists of both the floodway and the floodway fringe. FLOOD PROTECTION GRADE: An elevation that is a Specific distance above the regulatory flood elevation as established by agencies having jurisdiction. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. FLOODWAY: See Regulatory Floodway. FLOODWAY FRINGE: That portion of the floodplain lying outside the floodway that is inundated by the regulatory flood. FOOTING DRAIN: A drain pipe installed around the exterior of a basement wall or foundation or located in a crawl space to prevent water from entering a basement or crawl space. GRADIENT: The inclination or slope of a channel, conduit or natural ground surface expressed as a ratio of the vertical rise or fall to the corresponding horizontal distance. IMPROVEMENT LOCATION PERMIT: A permit stating that the proposed erection, construction, enlargement or moving of a building or structure complies with the provisions of the City of Jeffersonville Zoning Ordinance. INLET: An opening into a storm sewer system for the entrance of surface storm water runoff, more completely described as a storm sewer inlet. LAND-DISTURBING ACTIVITY: Any man-made change of the land surface including removing vegetative cover, excavating, filling, transporting, and grading. It includes any activity requiring a City of Jeffersonville Improvement Location Permit. MANHOLE: Storm sewer structure through which a person may enter to gain access to a storm sewer or enclosed structure. A manhole may also be an inlet for the storm sewer system. OUTFALL: The point or location where storm runoff discharges from a sewer, channel or detention facility. PEAK FLOW: The maximum rate of flow of water at a given point in a channel or conduit resulting from a specified storm or flood of a given return period or duration. PERIMETER DRAIN: A tile drain located around an absorption field. POND: See Wet Bottom Retention Basin. RAINFALL INTENSITY: The rate of rainfall expressed as the amount of rain occurring within a given duration, normally expressed in inches~ per hour fn:8708\~d~s~o.doe [~m] 9 29. REGULATED AREA: All of the land under the jurisdiction of the Board. 30. REGULATORY FLOOD: A flood with a peak having a probability of occurrence of one (1) percent in any given year, which is commonly referred to as a one hundred (100) year flood as calculated by a method and procedure · which is acceptable to the Board. If a permit for construction in the floodway is required by the Indiana Department of Natural Resources, the regulatory peak discharge must be calculated by the method and procedure acceptable to the Board and the Indiana Department of Natural Resources. REGULATORY FLOODWAY: The channel of a river or stream and those portions of the floodplain adjoining the Channel which are reasonably required to carry and discharge the peak flow of the regulatory flood of any river or stream. 32. 33. 34. 35. 36. 37. RELEASE RATE: The amount of water released from a drainage facility per trait of time. 38. RETURN PERIOD: The average interval of time within which a given rainfall event will be equaled or exceeded once. A flood having a return period of one hundred (100) years has a one (1) percent probability of being equaled or exceeded in any one (1) year. RUNOFF: The pOrtion of precipitation from such sources as rainfall, snow melt, or irrigation water that flows over or under the ground's surface and arrives at the point of consideration as surface water. RUNOFF COEFFICIENT: A factor in the rational formula that relates the ratio of peak runoff to rainfall and considers such factors as ground cover, soil types, and watershed configuration. SEDIMENT: Material of soil and rock origin transported, carried, or deposited by water. SIPHON: A ~losed conduit, a portion of which lies above the hydraulic grade line resulting in a pressure less than atmospheric and requiring a vacuum within the conduit to start flow. An inverted siphon is used to carry flow under an obstruction. SITE: The entire area included in the legal description of the land on which the land-disturbing activity is proposed in the permit application. 39. SPILLWAY: A waterway in or about a hydraulic structure for the escape of excess water. 40. STILLING BASIN: A structure used to dissipate the energy and/or velocity of flowing water. 41. STORAGE DURATION: The length of time that water may be stored in any drainage facility. 42. STORM SEWER: A closed conduit for conveying collected storm water. 43. SUBSURFACE DRAIN: A tile drain installed for the purpose of lowering the ground water table. 44. WATERCOURSE: Any natural or man-made drainage way having a defmed channel and banks and into which storm water runoff or floodwaters flow either regularly or intermittently. ~5. WATERSHED: See Drainage Area. 46. WET BOTTOM RETENTION BASIN: A basin designed to retain a permanent pool of water plus capacity to detain and release excess runoff. 47. WETLANDS: Those areas which have hydric soils and that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support and that, under normal circumstances, do support a prevalence of vegetation typically adapted for life in saturated soil condition saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. 3.1 CHAPTER 3 DRAINAGE, EROSION, AND SEDIMENT CONTROL PLAN PROCEDURES Information Requirements The applicant must submit, to the Board, drainage calculations detailing runoff before and after the proposed project is constructed, which demonstrate compliance with this ordinance. In addition, the applicant must submit two (2) sets of: 1) a Drainage Plan, and 2) an Erosion and Sediment Control Plan of sufficient detail and clarity to allow the Board to evaluate project compliance with this ordinance. The maximum sheet size is 24"x 36" and as much information as possible should be shown on as few sheets as possible. The plans must be prepared under the supervision of and certified by a registered land surveyor or a professional engineer licensed by the State of Indiana. 3.2 Site Plan & Erosion and Sediment Control Plan Requirements The plans submitted must include the following information: 1. Existing Conditions: Project name, developer, project engineer or surveyor, their addresses and telephone numbers, legal description, date of plans and any revisions, scale of plan, and north point; Area Vicinity Map detailing project environs, current zoning, adjoining property owners, and street lines within one thousand (1,000) feet of the project boundaries; Topography based on mean sea level elevation at a minimum one (1) foot interval for the project site and any adjoining areas whose topogr~phy may affect project drainage. If the drainage area is extensive, an additional map of sufficient clarity must be provided; The location of existing streams, lakes, ponds, watercourses, and other flood water nmoff channels, the extent of the floodplain at the established one hundred (100) year flood elevation, and the limits of the floodway, all properly identified; The existing location of surface and subsurface drains, inlets, and outfalls, easements that are visible or of record, existing seeps, springs, and wells that are Visible or of record; Existing storm and sanitary sewers, inlets, or outfalls, existing septic tank systems, and treatment plant outlets and utilities; G. Existing structures; H. Identification of jurisdictional wetlands in conformance with Section 1.7; Boundary and acreage of project site indicated by a heavy solid line based on a traverse with angular and linear dimensions; and J. Other significant conditions of the area proposed to be improved. Site Improvements: A. Location and finished floor elevations for all improvements; Proposed changes in streams, lakes, swamps, detention basins, watercourses and flood water runoff channels, floodplains, and the limits of the floodway, all properly identified, Proposed location of surface and subsurface drains, inlets, outfalls, and easements; Proposed location, materials, and gradients of storm and sanitary sewers, inlets and outfalls, on-site sanitary effluent disposal systems, and location of affected utilities; E. Structures to be removed or relocated on the project site; The location and design of proposed streets, roads, sidewalks, culverts, bridges, parking lots, hard surfaced areas, including depressed pavem6nts used to convey or temporarily store overflow from heavier rainstorms, and outlets for such overflow; The cross section of existing streams and floodplains to be maintained or changed and new channels to be constructed, where changes are proposed or discharge into receiving streams is altered; and ill: 8708/sdeseo.do¢[ sm] 13 Ho The erosion and sediment control measures to be implemented including, but not limited to: design and installation details, location, vegetation and schedule. 3.3 Submittal and Consideration of Plans All applications must be submitted at least forty-five (45) days before the drainage board meeting at which the application is to be considered on forms approved by the Board and provided by the City Planner's Office. All applications must include a site map. For projects which require approval through the Plan Commission and/or its Plat Committee, such as subdivisions and site plan reviews, applicants must submit preliminary and final plats to the Board pursuant to this ordinance, as well as to the Plan Commission or its Plat Committee. The professional who prepared the plans included with the application must attend any Board meeting at which the application is considered. ¸3.4 The Board will give notice of its decision to the applicant. The Board must approve or disapprove the plans within forty-five (45) days of submission unless the applicant . consents to a continuance or extension. All approvals and disapprovals, with written reasons therefor, must be incorporated into the Board minutes. The Board may grant exemptions from any or all requirements of this ordinance and waive any requirements of this ordinance at its discretion. Determination of Runoff Quantifies Runoff quantities must be computed for the watersheds within the parcel under development. The quantity of runoff which is generated as the result of a given rainfall intensity may be calculated as follows: For areas up to and including two hundred (200) acres, the Rational Method may be used: The peak rate of runoff (Q) in cubic feet per second is computed as Q=CIA; Where: C = runoff coefficient, representing the characteristics of the drainage area and defined as the ratio of runoff to rainfall; I = average intensity of rainfall in inches per hour for a duration equal to the time of concentration (tc) for a selected rainfall frequency; and fn:8708/a~l~co.d0c[~m] 14 A = tributary drainage area :in acres. Guidance for selection of the runoff coefficients is to be found in appropriate design manuals. Rainfall intensity must be determined from the rainfall frequency curves found in standard design manuals for this region or from data shown. The time of concentration (tc) to be used must be the sum of the inlet time and flow time in the drainage facility from the most remote part of the drainage area to the point under consideration. The flow time in the storm sewers may be estimated by the distance in feet divided by velocity of flow in feet per second. The Manning Formula must be used to determine the velocity. Other methods of determining runoff may be used upon approval of the Board. Computer programs may be used and computer printouts submitted for drainage calculations provided details of the program and the assumptions made by that program are submitted with the calculations and approved by the Board. The Board may require other methods of determining runoff. 3.5 .Amount of Runoff to be Accommodated by Various Parts of Drainage Facility Various parts of a drainage facility must accommodate runoff water as follows: The drainage facilities, including but not limited to, inlets, catch basins, street gutters, component swales, storm sewers and small channels, which collect storm water must accommodate peak runoff from at least a ten (10) year return period storm. The allowable spread of water on collector streets is limited to maintaining two (2) clear ten (10) foot moving lanes of traffic. One (1) lane is to be maintained on local roads and subdivisions streets. For rainfall heavier than a ten (10) year storm, these minimum requirements must be satisfied: (A) (B) (c) Open channels carrying peak flows greater than thirty (30) cubic feet per second must be capable of accommodating peak runoff for a fifty (50) year return period storm within the drainage easement; New dulverts must be capable of accommodating peak runoff from a fifty (50) year return period storm when crossing under a road which is part of the Indiana Department of Transportation functional classification system and is classified as principal or minor arterial, or major or minor collector road; and Drainage facilities must have adequate capacity to convey the storm water runoff from all upsfream tributary areas through the development under consideration for a storm of one hundred (100) year design return period calculated on the basis of the upstream land in its present state of development. An allowance, equivalent to the reduction in flow rate provided, must be made for upstream detention when such upstream detention and release rate have previously been approved by the Board and evidence of its construction can be shown. 3.6 Drainage Easements Drainage easements must be provided to cover all elements of the drainage facility and must be designed: 1. To be adequate to install and maintain the drainage facilities; 2. To minimize conflicts with utility easements; 3. To maintain a sufficient buildable area on each lot or parcel; To be at least fifteen (15) feet wide. No building, fence, trees or shrubs may be placed within the drainage easement. CHAPTER 4 STORM SEWER DESIGN STANDARDS All storm sewers, whether public or private and whether constructed on public or private property, must conform to the design standards and other requirements contained in this ordinance. 4.1 Hydraulic Capacity The hydraulic capacity of a storm sewer must be determined using Manning's Equation. 4.2 Minimum Size The minimum diameter of a storm sewer must be twelve (12) inches. An orifice plate or other device must control rate of release for detention storage, subject to approval of the Board, where the twelve (12) inch pipe will not limit the rate of release as required. 4.3 4.4 4.5 Grade The minimum and maximum allowable sewer gradients are those capable of producing velocities of two(2) and fifteen (15) feet per second, respectively, when the sewer is flowing full. A minimum of two (2) feet of cover is to be maintained over the top of the pipe. Pipe cover less than the minimum may be used only upon approval of the Board. Uniform slopes must be maintained between structures. A final grade must be set with full consideration of the dapacity required, sedimentation problems, and other design parameters. Alignment In general, a storm sewer must be straight between structures. The Board may allow curved sewers at its discretion under certain conditions. Manholes Structures must be installed to provide access to continuous underground storm sewers for the purpose of inspection and maintenance. Manholes must be provided at the following locations: 1. Where two (2) or more storm sewers converge; 2. Where pipe size changes; 3. Where a change in alignment occurs; 4. Where a change in grade occurs; 5. At suitable intervals in straight sections of sewer, and 6. Wherever pipe materials change. B. The maximum distance between storm sewer manholes must be as follows: Size of Pipe Maximum Distance (inches) (feet) 12" thru 42" 400 48" and larger 600 4.6 Inlets Inlets or drainage structures must be utilized to collect surface water through grated openings and convey it to storm sewers, channels or culverts. The inlet grate opening provided must be adequate to pass the design ten (10) year flow with fifty (50) percent of sag inlet grate open areas clogged. An overload channel from sag inlets to a suitable outlet or basin must be provided. (See Section 3.5.1) 4.7 Workmanship The specifications for the constructions of storm sewers cannot be less stringent than those set forth in the latest revision of the Indiana Department of Transportation's "Standard Specifications". 4.8 Materials Storm sewer manholes and inlets must be constructed of cast in place concrete or precast reinforced concrete. Material and construction must conform to Indiana Department of Transportation's "Standard Specifications", Section 720. Pipe and fittings used in storm sewer construction must be reinforced concrete pipe (ASTM C- 76). Smooth-walled PVC pipe and smooth walled corrugated polyethylene pipe may be used only in areas specially approved by the Board. Smooth-walled PVC pipe and smooth walled corrugated polyethylene pipe cannot be used under streets or as driveway culverts. Other types of inlets, end treatments, pipes and fittings may be used only when specifically authorized by the Board. Pipe joints must be flexible and soil tight and must conform to the requirements of Section 715.02 Materials, of the latest edition of the Indiana Department of Transportation's "Standard Specifications". Pipe end treatments must be metal end sections for plastic pipes and concrete end sections for concrete pipes. 4.9 Pipe Bedding, Backfill and Surface Restoration All pipe must be bedded on four (4) inches and covered by twelve (12) inches of Indiana No. 57 crushed limestone. Where pipe is installed in earth areas, not immediately adjacent to a street or road, the remainder of the trench must be hackfllled with selected earth materials, humped over the trench to alloTM for settling. Where pipe is installed in a graveled area, the remainder of the trench must be backfilled with Bank Run sand to a point eight (8) inches below original grade and then filled with Indiana No. 73 crushed limestone to original grade. fn:8708\s~s~°'a°ctsm] 18 Where pipe is installed in an asphalt street, driveway, or parking area, the remainder of the trench must be backfilled with Bank Run sand to a point nine (9) inches below original grade. The trench must then be trimmed back six (6) inches on each side and filled with 3000 psi concrete. After all construction is completed, the trench must be cleaned, primed and paved with a one (1) inch compacted thickness of INDOT HAC Surface to be flush with the surrounding area. All patch seams can only be saw cut, cut smooth, straight and tarred. Where pipe is installed in a concreted area, the remainder of the trench must be backfilled with Bank Run sand to a point nine (9) inches below original grade. The trench must then be trimmed back six (6) inches along each side and filled with 3000 psi concrete flush with original grade. All patch seams must be saw cut only, smooth and straight. All cutting of trenches in existing asphalt or concrete pavements must be done with a saw only to provide a straight, smooth joint when new paving is done. 4.10 Special Hydraulic Structures Special hydraulic structures such as siphons, stilling basins, or other special structures required to control the flow of water in storm drainage facilities, must be limited to those locations justified by prudent planning and designed with careful and thorough hydraulic engineering analysis. CHAPTER 5 OPEN CHANNEL DESIGN STANDARDS All open channels, whether constructed on public or private property, must conform to the design standards and other requirements contained in this Ordinance. 5.1 Channel Cross Section and Grade The required channel' cross section and grade are determined by the design capacity based on Maiming's Equation, the material in which the channel is to be constructed, and the requirements for maintenance. A minimum depth may be required to provide adequate outlets for subsurface drains, storm sewer pipes, tributary ditches or streams. The channel grade must be such that the velocity in the channel is high enough to prevent siltation but low enough to prevent erosion. Channel lining materials must be justified by the project engineer in the final drainage design. 5.2 Side Slopes 5.3 Side slopes of earthen channels must be no steeper than three to one (3:1), justified by local materials and approved by the Board. Flatter slopes may be required to prevent erosion and for ease of maintenance. Where channels will be lined, as per Section 5.7, side slopes must be no steeper than one and one/half to one (11/2:1) with adequate provisions made for weep holes. Side slopes steeper than one and one/half to one (11/2:1) may be used for lined channels provided that the side lining and structural retaining wall are designed and constructed with provisions for live and dead load surcharges. Channel Stability A stable channel does not vary design gradient and cross section from acceptable limits; Channel stability must be determined for an aged condition. The velocity must be based on the design flow or the bank full flow, whichever is greater, using "n" values for various channel linings; and Channel stability must be checked using conditions immediately after construction for justification of erosion control measures. See Chapter Seven, "Soil Erosion and Sedimentation Control", for erosion control standards. 5.4 Drainage of Open Channels Vegetated channels with a gradient of less than one percent (1.0%) or that are subject to low flows of long duration or where wet conditions prevail must be drained with a tile system or by other means such as paved gutters. Tile lines may be outletted through a drop structure at the end of the channels or through a standard tile outlet. Tiles must be bedded in granular materials that will not pass through tile openings. Tiles must be installed with a minimum of six (6) inches of cover over the top of the tile and must be offset from the centerline of the channel. 5.5 Appurtenant Struct/~res The channel design will include the design of all structures required for the proper functioning of the channel, the laterals, and the maintenance ways. fn: 8708\sdese°'d°c[srnl 20 ' 5.6 Disposition of Spoil Material Spoil material resulting from clearing, grubbing, and channel excavation must be disposed of in a manner that will minimize erosion and other adverse effects to easements, surface drainage, and rights-of-way. Disposal must be done in a manner that will also improve the aesthetic appearance of the site. 5.7 Materials Materials acceptable for use as channel lining are concrete, gabions, pegged rod erosion control blankets, and netting. Other lining materials require specific approval of the Board. All channel materials must comply with the latest edition of the Indiana Department of Transportation's "Standard Specifications". Interconnected tires are not acceptable material. CHAPTER 6 STORM WATER DETENTION The following governs the design of any improvement with respect to the detention of storm water runoff. 6.1 Acceptable Detention Methods The increased storm water runoff from a proposed development must be detained on- site by appropriate wet or dry bottom reservoirs, by storage on flat roofs, parking lots, streets, lawns or other acceptable techniques. Measures that retard the rate of overland flow and the velocity in runoff channels may also be used to control the runoff rate. 6.2 Detention Facility DeSign Storm water facilities must be designed to store the excess flows from a post development one hundred (100) year return interval storm. The release rate must be that of a ten (10) year return interval storm on the site in its predeveloped state or the capacity of the receiving stream, whichever is less. The developer's engineer is responsible for determining the hydraulic capacity of the receiving stream 6.3 Allocation of detention In the case of an existing limiting restriction that cannot be realistically removed, the allowable release rate from any one detention basin must be in direct proportion to the ratio of its drainage area to the drainage area of the entire water shed upstream of the limiting restriction. The total runoff must not exceed the capacity of the restriction and each development must be responsible for its proportionate share of the storage requirement. 6.4 Determination of Storage Volume - Rational Method For areas of two hundred (200) acres or less the Rational Method may be used to determine the required volume of storm water storage, as outlined in the Cdunty Storm Drainage Manual of the Highway Extension and Research Project for Indiana Counties and Cities (HERPICC) 6.5 Determination of Storage Volume - Other Methods 6.6 Methods for determining runoff and routing of storm water other than the Rational Method may be used to determine the storage volume required to control storm water runoff. The procedures or methods used must receive the prior approval of the Board. The TR-20 and TR-55 models are approved for appropriate use in analysis of the runoff and routing of storm water. General Detention Basin Design Requirements Basins must be constructed to temporarily detain the storm water runoff that exceeds the peak flow rate authorized by this ordinance. The following minimum standards must be observed: The maximum volume of water stored and subsequently released at the design release rate must not result in a storage duration in excess of forty-eight (48) hours unless additional storms occur within the period; All storm water detention facilities must be separated by not less than twenty- five (25) feet from any building or structure to be occupied, and the lowest floor of any building or structure must be at least two (2) feet above the one-hundred (100) year storm water elevation of detention facilities; Safety grates may be required on all outlet control structures. Grates must retain a sphere greater than six (6) inches in diameter and must have a screen area at least six (6) times the end area of the outlet control structure; Danger signs must be mounted at appropriate locations to warn of deep water, possible flooding conditions during storm periods and other dangers that exist. Fencing must be provided if deemed necessary by the Board. The Board must approve design and locations. Outlet control structures must be designed to operate as simply as Possible and must require little or no maintenance and attention for proper operation; Emergency overflow facilities such as a weir or spillway must be provided for the release of exceptional storm runoffs or in emergency conditions such as the normal discharge devices becoming totally or partially inoperative. The overflow facility must be of such design that its operation is automatic and does not require manual attention; and 7. Side slopes must be in compliance with Section 5.2. 6.7 Dry Bottom Detention Basin Design Requirements Dry Bottom Detention Basins must comply with the following additional requirements: Provisions must be incorporated to facilitate complete interior drainage of dry bottom detention basins. Acceptable methods include natural grades to outlet structures, longitudinal or transverse grades to perimeter drains, paved gutters, or subsurface drains. Dry bottom detention basins with less that one percent (1%) gradient must be provided with subsurface drainage or paved gutters; 2. Recreational facilities, aesthetic qualities, open space or other secondary use - must be considered in planning the detention facility; and The maximum planned depth of storm water Stored without a permanent pool must not exceed four (4) feet. 6.8 Wet Bottom Retention Basin Design Requirements Where part of a detention basin, excluding wetlands, Will contain a permanent pool of water, the following additional requirements apply: If fish are to I/e maintained, a pond must have a water area of at least one/half (1/2) acre and a minimum depth of approximately ten (10) feet must be maintained over at least twenty-five (25) percent of the pond area. The remaining pond area must not have extensive shallow areas, except as required by subsection (3) below; If fish are not to be maintained, a minimum depth of eight (8) feet must be maintained over at least twenty-five (25) percent of the pond at permanent water level. Where a limiting layer prevents excavation to that depth, a minimum of six (6) feet over at least fifty (50) percent of the area is required; In excavated ponds, the underwater side slopes in the pond must be stable. In the case of valley storage, natural slopes may be considered to be stable; A safety ledge a minimum of six (6) feet in width and a 10:1 slope is reqUired and must be installed in all ponds approximately thirty (30) inches below the permanent water level; and Erosion control measures must be installed to prevent erosion from wave action and wet-dry cycles; Chain-link fencing must be provided around the perimeter of the wet bottom retention basin. The minimum fence height must be six (6) feet. 6.9 Rooftop Storage If rooftop detention is proposed, details of such designs are to be included in the Improvement Location Permit application and must,include the depth and volume of storage, details of outlet devices and down drains, and elevations of emergency overflow provisions. Rooftop detention is not recommended. 6.10 Parking Lot Storage Paved parking lots may be designed to provide temporary detention storage of storm water. Ponding should, in general, be confined to those positions of the parking lots farthest from the area served. Ponding areas must not conflict with handicapped parking and access routes. Such ponding areas should be exposed to sunlight in winter months to minimize icing. Storage depth must be linfited so as not to conflict with parking lot use. Any detention facility utilizing a parking lot must take resurfacing and other parking lot maintenance activities into consideration during design. 6.11 Facility Maintenance Responsibility Maintenance of draixiage facilities during construction must be the responsibility of the land developer. Maintenance responsibilities must be documented by appropriate restrictive covenants to property deeds prior to final drainage plan approval. Routine maintenance is the developer's responsibility for a minimum of five (5) years after completion of the drainage facility. After that time, upon the approval of the City Engineer, the City may accept responsibility for routine maintenance of the drainage facility. The permanent pool of a wet bottom basin is the responsibility of the developer or homeowner's association. Routine maintenance must, at a minimum, assure that the drainage facility performs the functions for which it was designed and constructed. Unless specifically accepted by the City, all drainage facilities must be privately owned and funded. 6.12 Joint Development of Control Systems Storm water control systems may be planned and constructed jointly by two (2) or more developers as long as compliance with this ordinance is maintained. 6.13 Allowance for Sedimentation Dry bottom detention basins and wet bottom retention basins must be designed with an additional six percent (6 %) of available capacity to allow for sediment accumulation resulting from development and to permit the pond to function for reasonable periods between cleanings. Basins should be designed to collect sediment and debris in specific locations so that removal costs are kept to a minimum. 6.14 Detention Facilities in a Flood Plain If detention storage is provided within a floodplain, only the net increase in storage volume above that which naturally existed in the floodplain must be credited to the development. No credit will be granted for volumes below the elevation of the regulatory flood at the location unless compensatory storage is also provided. CHAPTER 7 SOIL EROSION AND SEDIMENT CONTROL 7.1 General Provisions Measures taken to control erosion and sedimentation must assure that sediment is not transported from a site by storm events. The following general provisions should be used in the preparation of submissions required under this ordinance: To minimize potential for soil erosion, development should fit the topography and soils of the site. Steep slopes, deep cuts, and fills in er0dible soils should be avoided wherever possible and natural contours should be followed as closely as possible; .Natural vegetation must be retained and protected wherever possible. Areas ~mmediately adjacent to natural watercourses and protected wetlands must also be left undisturbed wherever possible. Vegetation to be preserved must be protected prior to construction; All activities on a site must be constructed in a logical sequence so that the smallest practical area of land will be exposed for the shortest practical period of time during development; Practices including, but not limited to, sediment basins, silt traps or filters must be installed prior to land-disturbing activities and maintained to remove sediment from runoff leaving the site as long as unstabilized soil conditions exist; The selection of soil erosion and sediment control measures must include the assessment of the probable frequency of climatic events. The aesthetics of the project improvements and the requirements of continuing maintenance must be considered; and Provisions must be made to accommodate the increased runoff caused by changes in soil and surface conditions during and after developments. Drainage ways must be designed so that their final gradients and resultant velocities will not create erosion. 7.2 Design Criteria, Standards, and Specifications for Erosion Control Measures All erosion control measures must meet the design criteria, standards, and specifications outlined in the: a) The "Field Office Technical Guide" of the Soil Conservation Service (SCS of the United States Department of Agricultural (USDA)); and b) The "Urban Development Planning Guide" of the Hoosier Heartland Resource Conservation and Development Council; and c) The "Indiana Handbook for ErOsion Control In Developing Areas" Of th~ iDNR_ Division of Soil Conservation. These publications are available through the Clark County Soil and Water Conservation District, the Natural P~esource Conservation Service (NRCS) offices, the U~S. Government Printing Office, and the IDNR Division of the Soil Conservation. Erosion control measures must be identified on the plans using standard symbols (See Appendix A). 7.3 Maintenance of Erosion Control Measures The applicant or subsequent landowner must maintain all sediment basins and other erosion control measures necessary to meet the requirements of this ordinance. After land-disturbing activities cease, and the silt is stabilized, temporary sediment basins and other temporary erosion control measures may be eliminated if their purpose has been fulfilled. Any disturbed soil resulting from removal of such practices must be stabilized by approved methods. 7.4 Control of Erosion and Sediment during Land Disturbing Activities The following requirements must be met on all sites: Sediment Trapping: Temporary sediment basins or other suitable control measures must detain sediment-laden water flowing from the site. Water may not be discharged in a manner that causes erosion of the site or receiving channels or an accumulation of sediment within the receiving channel or its outlets; Waste and Materials Disposal: All waste and unused building materials including, but not limited to, garbage, debris, cleaning wastes, wastewater, toxic materials, and hazardous substances must be properly disposed of and not allowed to be carried by runoff into a receiving channel or storm sewer system; Tracking: Prior to the land-disturbing activity each site must have graveled access drives or other approved systems of sufficient width and length to eliminate sediment being tracked onto public or private roadways. Gravel access drives must be maintained by acceptable methods. Flushing is not an acceptable method; TemPorary Stream Crossings: A stream crossing during land-disturbing activities must be non-erosive and structurally stable and must not contribute to flooding or safety hazards. Streams should be crossed at right angle to the stream flow. Erosion control measures must be employed and must be appropriate tO the expected life of the crossing. Temporary crossings must convey bankfull flow or a two (2) year peak discharge, whichever is less. Overflow areas must be protected from erosion for a ten (10) year peak flow; Sediment Removal: Public or private roadways must be cleaned daily and after major storms using acceptable methods to remove any accumulated sediment. The developer's contractors are responsible for supervision of the construction activity within the development and must take all necessary actions to remove sediment from the streets. Appreciable sediment should be replaced and stabilized properly and protected from redeposit onto the road or into the storm water system; Drain Inlet Protection: All storm drain inlets must be protected with straw bales, filter fabric, or equivalent barriers meeting accepted design criteria, standards and specifications. Curb inlet protection measures that trap sediment within pavement areas are prohibited; and Site Erosion And Sediment Control: The following items apply only to the time period when land disturbing activities are taking place which may cause water and sediment to leave the site: (a) Runoff passing through the site from adjacent areas must be minimized by protecting the existing channel or, if necessary, diverting it around disturbed areas if legal, feasible, and practical; and (b) On the site, runoff from the entire disturbed area must be controlled by meeting the following: (1) (2) All disturbed ground left inactive for seven (7) or more days must be stabilized by seeding, sodding, mulching, or by other equivalent erosion control measures; For sites having less than ten (10) acres disturbed at one time, silt fences, straw bale dams, or equivalent erosion control measures must be placed along all sloping perimeters where erosion and sedimentation could occur. If a channel or an area of concentrated runoff passes through the site, silt fences must be placed along the channel edges to reduce the amount of sediment reaching the channel; and (3) Where drainage acres are too large or runoff volumes are too great for sediment trapping practices, one or more sediment · basins should be constructed. Each sediment basin should have a 'sufficient depth and a sufficient surface area to trap the sediment. The discharge rate or velocity from a basin should be sufficiently low so as not to cause erosion or the receiving channel must be adequately protected. ~: During cut and fill operations toPsoil must be stockpiled and re-spread on final grades where vegetation is tO be establishedl Soil Stockpiling: Excess soil that is stored to be used at a later date must be stockpiled and protected from erosion. 8.1 Sump Pumps CHAPTER 8 ACCESSORY DRAINS Sump pumps installed to receive and discharge ground waters or other storm water must be connected to a storm sewer, a subsurface drain or a designated storm discharge channel. Floor drain flow or other sanitary sewage must be connected to the sanitary sewers or septic systems and must not discharge to storm sewers or surface outlets. 8.2 Down Spouts All down spouts or roof drains must discharge onto the ground or be connected directly to the storm sewer pipe. Down spouts or roof drains must not be connected to the sanitary sewers or subsurface drains. 8.3 Footing Drains 8.4 Footing drains must be connected to a storm sewer, subsurface drain or designated storm drainage channel. Footing drains or drainage tile must nOt be connected to the sanitary sewer or septic system. Basement Floor Drains Basement floor drains must be connected to the sanitary sewers or septic system. Basement drains must not be connected to sump pumps that discharge to storm sewers. CHAPTER 9 ADMINISTRATIVE REQUIREMENTS 9.1 Certification Required After completion of the project and before final acceptance will be made, five (5) professionally prepared and certified sets of "Record Drawings" must be submitted to the Board for review. These plans shall include all pertinent data relevant to the completed storm drainage and erosion control systems and shall include: 1. All pipe sizes and pipe material; All invert elevations; All top rim elevations; All structures and pipe lengths; All permanent sediment basins and their maintenance provisions; Data and calculation showing detention basin storage volume; and A certified statement on the plans stating the completed storm drain facility substantially complies with construction plans as approved by the Board. If during preparation of these "Record Drawings" it is found that the storm drainage facility does not substantially comply with the construction plans as approved by the Board, the applicant must obtain re-approval. The Board must review all "Record Drawings" for compliance within thirty (30) days after their submission to the Board. If notice of noncompliance is not given within thirty (30) days of submission of the plans, the plans will be construed as approved. 9.2 Changes in Plans Any revisions, significant change or deviation in the detailed plans and specifications after formal approval by the Board must be filed with and approved by the Board prior to implementation of the revision or change. Copies of the revisions or changes, if approved, must be attached to the original plans and specifications. 9.3 Disclaimer of Liability The degree of protection required by this ordinance is considered reasonable for regulatory purposes and is based on historical records, reasonable engineering criteria, and scientific methods of study. Larger storms may occur or storm water runoff depths may be increased by man-made or natural causes. This ordinance does not imply that land uses permitted will be free from storm water damage. This ordinance does not create liability on the'part of the City of Jeffersonville or any officer or employee for any damage that may result from reliance on this ordinance or on any administrative decfsion lawfully made. 9.4 Corrective Action Nothing contained in this ordinance prevents the City of Jeffersonville from taking such other lawful action as may be necessary to prevent or remedy any violation. All costs connected with any legal action accrue to the person or persons responsible. 9.5 Repealer All ordinances or parts thereof in conflict with the provisions of this ordinance are repealed. 9.6 Exempt Projects Any residential, commercial or industrial major or minor subdivision or construction project which has had its drainage plan approved by the Board prior to the effective date of this ordinance is exempt from all the requirements of this ordinance, however, compliance is encouraged. 9.7 Enforcement This section establishes the means of enforcing and the penalty for violation of these regulations. It is the duty of the Board to enforce these regulations and to bring any violation or lack of compliance to the attention of the City Attorney. No Improvement Location Permit, Building Permit or Certificate of Occupancy required under the Building Code, the Zoning Ordinance or these regulations may be issued on any property subject to these regulations until such property is in full compliance with the provisions of these regulations. Any person who violates a provision of these regulations is guilty of an infraction and, upon conviction, must be fined not less than one hundred dollars ($100.00) and not more than twenty-five hundred dollars ($2,500.00) for each day's violation. The Court must determine the time period of violation. The Board may institute any injunction suit requesting a person or a governmental unit to be directed to repair streets, storm sewer facilities, streams and to remove a structure erected in violation of these regulations or to make the same comply with its terms. If the Board is successful in its suit, the fn: 8?08/~e~c°'d°c[sml 31 respondent must bear the costs of the action including, but not limited to, attorney fees, court costs, legal advertising, and professional services. The Board may institute a suit for mandatory injunction requesting a person or a governmental unit that has violated any provisions of these regulations, to comply with the provisions of the regulations. 9.8 Effective Date of Ordinance This ordinance will be in full force and effective from and after its passage, approval, and publication according to law. This Ordinance shall be in full force and effect from and after its passage and approval. Passed this __ day of ,199__. ATTEST: Thomas R. Galligan Presiding Officer C. Richard Spencer, Jr. Clerk and Treasurer this Presented by me as Clerk and Treasurer to the Mayor of said City of Jeffersonville day of ,199__. C. Richard Spencer, Jr. Clerk and Treasurer This Ordinance approved and signed by me this 199__. day of Thomas R. Galligan, Mayor 32 APPENDIX A SYMBOLS FOR USE ON EROSION/SEDIMENT CONTROL PLAN SITE MAPS respondent must bear the costs of the action including, but not limited to, attorney fees, court costs, legal advertising, and professional services. The Board may institute a suit for mandatory injunction requesting a person or a governmental unit that has violated any provisions of these regulations, to comply with the provisions of the regulations. .9.8 Effective Date of Ordinance This ordinance will be in full force and effective from and after its passage, approval, and publication according to law. This Ordinance shall be in full force and effect from and after its passage and approval. Passed this ./ ay Thomas R. Galligar~ Presiding Officer ATTEST: C. Richard SpenceY~IJr. ~/' Clerk and Treasurer this Presented by me as Clerk and Treasurer to the Mayor of said City of Jeffersonville /..~day of C. Ri}:hard Spencer, Clerk and Treasurer _ This Ordinance approved and signed by me this /..~"~day of 199_~_~. -- Ig , y fm8708X~mo.doc[am] 32 THE TOM GALLIGAN Mayor DIRECTOR OF PLANNING & DEVELOPMENT JIM P. URBAN City County Building 501 E. Court Avenue Jeffersonville, Indiana 47130 (812) 285-6493 FAX (812) 285-6468 May 20, 1998 TO: Mayor Galligan City Council Members Drainage Board Members Plat Review Committee FR: Jim Urban, City Planner Bob Miller, City Engineer RE: Storm Drainage, Erosion and Sediment Control Ordinance On Tuesday May 19, 1998 a public hearing was held to receive comment about the proposed "Storm Drainage, Erosion and Sediment Control Ordinance". Public notice of the meeting was given and there were several people present. No comments affecting the text were offered either by those present or by any phone calls or letters. The ordinance was approved at the subsequent meeting of the Drainage Board. The Board has asked to place the ordinance on the Council's June 8 agenda for approval. The ordinance is enclosed for your review. Should you have any questions please call Bob at 285-6474 or me 6493. Thank you. RECEIVED MAYOR THOMAS R. GALUGAN CITY OF JEFFERSONVILLE