11.070 Application Requirements for Preliminary Subdivision Plats

04/27/10; 07/10/12; 02/10/15; 08/09/16) The following information is required for all preliminary subdivision plats, in addition to other information as may be required by the Reviewing Departments, Commission, or City Council necessary to evaluate the merits of the proposed subdivision plat: A. General Requirements. The preliminary plat shall be prepared by a licensed engineer or land surveyor licensed to practice in the State of Utah. All engineering and surveying documents submitted for City review shall bear the seal of the professional engineer and professional land surveyor in accordance with Utah Code Ann. §58-22-602. The sheets shall be numbered in sequence if more than one sheet is used The applicant shall submit one electronic copy in PDF format. B. Features to be shown on Preliminary Plat. The preliminary plat shall contain at a minimum the following information: 1. a title block showing: (a) name of the subdivision; (b) type of development; (c) name and address of owner of record, developer, and designer; (d) name and address of engineer or land surveyor; (e) date of preparation; and (f) tabulation of acres, lots, open space, and units per acre; 2. proposed subdivision boundary lines, existing property lines, and adjacent existing property lines. 3. graphic and written scale at no more than one inch equals 100 feet or as recommended by City Engineer; 4. north arrow; 5. vicinity map at a scale of one inch equals 1,000 feet; 6. surveyed boundary of the development, accurate in scale, dimension, and bearing including: (a) Location and names of adjacent properties/property owners and platted subdivisions. 7. location of zoning boundary lines within and adjacent to the proposed subdivision; 8. location, height, and type of existing fence lines within and contiguous to the subdivision; 9. location and dimensions of all existing buildings within the proposed subdivision. Indicate which buildings are to remain and which are to be removed; 10. location of all proposed lots including: (a) lot dimensions; (b) lot frontage; (c) lot area in square feet; and (d) building setback lines also known as building envelopes; 11. lots consecutively numbered or lettered in alphabetical order; C. Items to be shown on a site plan page: 1. topographic contour intervals of no greater than two feet. 2. location of existing features within and contiguous to the proposed subdivision including: (a) existing public utility easements; (b) existing major utilities (c) irrigation ditches; (d) drain pipes; (e) drainage channels; (f) culverts; (g) railroads; (h) bridges; (i) power lines; (j) water bodies; (k) springs or water sources within or adjacent to the property; (l) existing wells. Show and label whether the well is to remain or be abandoned; and (m) equestrian, pedestrian, and bicycle trails; 3. location and dimensions of any common space or open space areas including property to be set aside for parks, playgrounds, trails, or other public or private uses, with a designation of the purpose of those areas, and conditions, if any, of the dedication or reservation. Add labels identifying if each area is to be public or private; 4. location and width of all existing and proposed roads, rights-of-way, alleys, and other public ways, with all main roads complying with the Lehi City Master Transportation Plan; (a) proposed names of all new roads; (b) if adjacent to a state road, specify UDOT access size and location, noting UDOT approval will be required at final plat; (c) 5. location of any necessary temporary turnaround easements for emergency access on dead end roads; 6. the proposed treatment of the perimeter of the development, including materials and techniques used, which may be required to comply with Chapter 18, Right to Farm, such as: (a) fences; (b) berms; and (c) walls; D. Items to be included on the utility plan: 1. location and size of existing and proposed culinary and pressure irrigation water lines, including existing lines adjacent to or affected by the proposed subdivision; 2. location of existing and proposed sewer mains, including existing lines adjacent to or affected by the proposed subdivision; 3. existing and proposed storm drainage improvements including: (a) major drainage facilities, outfalls, and discharge; and (b) drainage pipe locations; 4. location, and size, of any required piping for irrigation ditches as per the irrigation company letter; E. Items to be included on the grading plan: 1. location of all existing and proposed curb, gutter, and sidewalk within the subdivision including: (a) an indication of the roadway grades, retaining wall locations, and steep cuts and fills, and areas where roadway grades are expected to exceed 6% or be less than 1%; and (b) flow arrows showing direction of storm water surface flows; (c) a note stating that if landscaping is not installed within six months of land disturbance, the ground will be reseeded with native vegetation to protect against erosion. F. Items to be included on a drainage plan: 1. location of detention/retention basins with an indication that the basin will include the following: (a) minimum one-foot freeboard; (b) 3:1 slopes or flatter; grass covering and underground sprinkler system; designation of the purpose and conditions, if any, of the dedication or reservation G. Items to be included on other pages: 1. identification of natural features or sensitive lands including, but not limited to: (a) wetlands; (b) floodplains, floodways and areas, which would be covered in water in a 100-year storm event; (c) areas where ground water rises periodically to within two feet of the surface of the ground; (d) slopes exceeding 30 percent; (e) vegetation areas including name and size of all existing trees and shrubs which could be incorporated into the subdivision; and (f) threatened or endangered species habitat areas; H. a circulation plan including: 1. the proposed road, sidewalks, and trails layout; 2. required and proposed street connectivity index; 3. block and cul-de-sac lengths; and 4. proposed traffic calming features; and I. a landscaping plan for all park, open space, and common ownership areas including: 1. location, name, and size of all proposed trees, shrubs, and plants; 2. an indication of proposed seed mix for grass areas; and 3. an indication of proposed irrigation fa- cilities; and J. a note on the preliminary plat which states that the following items will be reviewed at the time of Final Plat review: 1. plan and profiles and construction drawings of public improvements; 2. all pipe types, specific locations, and details including bends and detector tape; 3. valves; 4. blowoffs, including size type & protection; 5. manholes, boxes, and related details; 6. water and sewer service details; 7. fire hydrants; 8. lot line utility easements; 9. street lights, street signs, and traffic signs; and 10. power line extensions and dome or transformer locations. K. Other information that may be required with the preliminary plans. : 1. a copy of the surveyor’s plat showing existing fence lines, existing deed lines, existing road rights-of-way and their widths, and proposed subdivision boundary lines; 2. a development phasing schedule if applicable, including the sequence for each phase, approximate size in area of each phase, and proposed phasing of construction of public improvements, recreation, and common open space areas; 3. an explanation of any proposed restrictive covenants, reservations, or private easements; 4. if the subdivision is proposed as a PUD, an application for PUD providing detailed information regarding proposed features including building elevations, materials, and amenities; 5. Right to Farm Analysis for all subdivisions adjacent to or in close proximity to an existing agricultural area or activity, an agricultural or irrigation right-of-way or easement, or an agricultural open space or agricultural preservation area, in accordance with Chapter 18 of the Lehi City Development Code; 6. drainage system calculations and an explanatory narrative stamped and signed by a licensed engineer, and for detention and retention basins, calculations to justify sizing based on a 100-year design storm; 7. a written statement from the appropriate agency such as irrigation companies or private landowners, accepting responsibility for all surface and subsurface drainage that is directed into channels owned by the agency; 8. Geotechnical report with California bearing ratio (CBR) test results; 9. letters of intent for any necessary offsite utility easements across privately owned land; 10. a letter from the Army Corp of Engineers regarding any wetland areas within boundaries of the proposed plat; 11. stamped, addressed envelopes of all owners of real property within 300 feet of the parcel of land proposed for development, in accordance with Section 03.100.