The preliminary plat submission shall be prepared by a professional engineer registered in the State of Ohio and shall include a general location map, the preliminary plat of the subdivision with all pertinent data and a preliminary drainage system design.
(A) The location map, drawn on a scale not smaller than 400 feet per inch, may be prepared either separately or on the same sheet with the plat, and shall include the following:
(1) Boundaries of the proposed subdivision, indicated by heavy line;
(2) Any and all present or projected thoroughfares related to the subdivision;
(3) All adjacent platted subdivisions and subdivision streets; and
(4) Title, scale, north arrow, county, township and range lines, etc.
(B) The preliminary plat shall, unless otherwise consented to by the Zoning Enforcement Officer, be drawn on a scale not smaller than 100 feet to 1 inch and shall show the following:
(1) The name and location of the proposed subdivision;
(2) Names and addresses of the owner, subdivider, land planning consultant, engineer or registered land surveyor who prepared the plat;
(3) Streets and rights-of-way adjoining and on the site of the proposed subdivision, showing the street names and including roadway widths, approximate gradients, types and width of pavement, curbs, planting strips and other pertinent data;
(4) All lot lines adjacent to and abutting the subdivision;
(5) Layouts of the lots showing approximate dimensions, lot numbers and centerline radius of streets;
(6) Approximate gross square footage of lots not including rights-of-way;
(7) Parcels of land proposed to be dedicated or reserved for schools, parks, playgrounds or other public, semi-public or community purposes;
(8) Easements, existing and proposed, showing locations, widths and purposes;
(9) Building setback and yard lines and dimensions;
(10) Location and size of nearest water main, sewer outlet and other pertinent utilities;
(11) Location type and approximate size of utilities to be installed;
(12) Tract boundary lines showing dimensions, bearings, angles and references to known land lines;
(13) Contours at vertical intervals of two feet, if the general slope of the site is less than 16%, and at vertical intervals of five feet if the general slope is 16% or greater;
(14) Tree masses and all individual trees having a diameter of 12 inches or greater;
(15) Natural features such as rock outcroppings, streams, creeks, etc. should be defined within the limits of construction indicated;
(16) Location of existing structures;
(17) A preliminary copy of the deed restrictions and covenants that would be placed upon the subdivision;
(18) Landscaping plans and proposed limits on the location and intensity of signs, advertising and off-street parking in the case of a proposed subdivision for industrial or commercial use;
(19) Location of existing or proposed buried debris;
(20) Minimum basement elevations for sanitary sewer service analysis;
(21) A development summary chart should provide the following information:
(a) Typical lot size;
(b) Quantity of lots;
(c) Number of housing units;
(d) Total acreage of development;
(e) Total acreage of open spaces; and
(f) Total acreage dedicated for each type of use;
(22) All survey information shall be tied into horizontal and vertical control provided by the City Engineer; and
(23) Traffic impact study required. A traffic impact study shall be a requirement for all major or minor subdivision applications if the expected trip generation of the land use is 100 or more cars per hour as identified in the Institute of Traffic Engineers (ITE) Manual. A traffic impact study shall be prepared by a qualified professional engineer registered in the State of Ohio at the developer's expense. The traffic impact study shall investigate the feasibility and benefits of improvements such as signals, turn lanes, driveway movement limitations, and other relevant information to the site to protect the safety of the traveling public. The traffic impact study shall include the following elements:
(a) A description of the site and study area;
(b) Anticipated development of adjacent parcels;
(c) Trip generation and distribution, including a description of all assumptions used to generate findings of trip distribution;
(d) Modal split, if applicable;
(e) Traffic assignment resulting from the development;
(f) Projected future traffic volumes;
(g) An assessment of the impact that would result from driveway alternatives;
(h) Recommendations for site access and transportation improvements needed to maintain traffic flow within and past the site at an acceptable and safe level of service; and
(i) An evaluation of the effects the proposed development will have on the level of service and roadway capacity.
(C) All proposed subdivisions shall have a storm drainage system designed to serve the area being developed. It shall be compatible to any adjacent storm drainage system and shall have in all cases a clear and unobstructed outlet. The storm drainage system shall be designed in such a manner to minimize the effects on the downstream properties within reasonable limits. The preliminary drainage plan shall:
(1) Show the general suitability of the proposed development to support a storm water management system;
(2) Be due at the time of preliminary plat submittal on a two-foot topographical contour map and should consist of two parts:
(a) The major system is comprised of the 100-year flood route. The system should be laid out in a manner as to direct all excess storm water into the detention or retention area; and
(b) The minor system is comprised of storm sewers, inlets, etc.
(3) Include the following information:
(a) The approximate size and location of detention or retention facilities, which are required for each subdivision; and
(b) The approximate location of any 100-year flood boundary areas.
(D) The developer, owner or their engineer may apply to the Planning Commission for an exception to the detention or retention requirements. Each request shall be accompanied by a study showing the effects of the proposed and required drainage system on the watershed it is located in.
(Ord. 09-3306, passed 10-15-09)