11.250 Application Requirements for Site Plans

08/09/16; 08/22/23) The following information is required for all site plans (except site plan for infrastructure projects) , in addition to other information required by the Reviewing Departments, Commission, or City Council to evaluate the merits of the proposed site plan: A. General Requirements. The site plan shall be prepared electronically and numbered in sequence. Submit PDF drawings using standard scales printed on standard size drafting sheets. I. Only two detail sheets per page. B. Features to be shown on Site Plan. The site plan shall show: I. name of development; II. City address or approximate city address III. graphic and written scale at no more than one inch equals 100 feet or as recommended by City Engineer; IV. north arrow; V. location and names of adjacent properties, property owners, and platted subdivisions; VI. Indicate zoning of subject property and surrounding properties VII. calculation of site plan areas including: (a) total acreage; (b) total project density for residential site plans; (c) for apartment site plans the type of units and number; (d) square footage and percentage of all landscaped areas including: (i) total landscaped area; (ii) total irrigated area; and (iii) total parking lot landscape; (e) square footage of all impervious surfaces, including: (i) rooftop area of all buildings; (ii) private roads and parking facilities; (iii) curb and gutters; (iv) walks; (v) loading areas; and (vi) asphalt or concrete aprons for solid waste containers or outdoor mechanical equipment; (f) gross building square footage; (g) parking calculations including: (a) required number of parking stalls; (b) proposed number of parking stalls; (c) required number of bicycle stalls both short and long term; and (d) proposed number of bicycle stalls; VIII. location of existing easements or rights-of-way, including those contiguous to the platted area, their nature, width, and the book and page number of their recording in the County's records; IX. location of proposed easements, including any required easements for water, sewer, power, drainage or irrigation, temporary turnaround easements and a ten or 15-foot public utility and roadway construction easement (PU&RCE) along front lot lines and any rear lot lines adjacent to a public right-of-way, or as otherwise required by the City in order to accommodate necessary public utilities; X. location, height, and type of existing fence lines within and contiguous to the site plan; XI. location, type, and height of any new fencing, berming, or other buffering to be installed as part of the development including any fencing required to comply with Section 12.080 – Project Buffering and Screening Requirements or Section 18.010, Right to Farm; XII. location, dimensions, and square footage of all existing and proposed buildings within the proposed site plan, with an indication of whether the buildings are to remain or be removed; XIII. building setback lines; XIV. the location of existing and pro- posed public, private and access roads including their names, dimensions, and cross sections; (a) Indicate the fire access roads 16. if public roadway dedication is required, a notation of the distance from the asphalt centerline of each existing road to the new property line of the site plan; 17. if no detention pond is shown on the plans, provide a note explaining how the detention or retention is to be handled. C. Items to be shown on the demolition page(s) 1. All buildings labelled if they are to be removed or to remain. 2. Contour lines D. Items to be shown on the grading page(s) 1. topographic contour intervals of no greater than two feet, unless otherwise stipulated by City Engineer; 2. location and extent of all cuts and fills exceeding three feet anywhere on the project site and any associated retaining walls; 3. elevation at all corners of the property 4. drainage arrows showing the direction water will flow on the site 5. location of existing features within and contiguous to the proposed site plan including: (a) irrigation ditches; (b) drain pipes; (c) drainage channels; (d) culverts; (e) railroads; (f) bridges; (g) power lines; (h) water bodies; (i) springs or water sources within 2,500 feet; and (j) equestrian, pedestrian, and bicycle trails; 6. 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. E. Items to be shown on the utility sheet(s) 1. location, size and pipe type of existing and proposed culinary and pressure irrigation water lines, including existing lines adjacent to or affected by the proposed site plan; 2. location of existing and proposed sewer mains and storm drain including pipe type, size, depth, and slope, including existing lines adjacent to or affected by the proposed site plan; (a) Include the manhole rim and invert elevations 3. existing and proposed storm drainage improvements including: (a) major drainage facilities, outfalls, and discharge; and (b) drainage pipe locations, sizes, and depths; 4. Utility crossing separation clearances 5. Location of existing and proposed power lines and equipment. Location of power meter(s) and transformer. Include the City’s standard detail for transformer pad, and for multiple meters, show a detail of the meter configuration. Include an indication of the size and voltage requirements for the project. 6. Location of existing and proposed Lehi Fiber. F. Items that need to be included on a plan sheet(s) 1. the location and width of all existing and proposed entrances onto adjacent roads; (a) Street intersection offsets of not less than 150 feet 2. if adjacent to a state road, UDOT access size and location and UDOT approval; 3. location of any necessary temporary turnaround easements for emergency access on dead-end roads; 4. the location, dimensions, and surface type of all parking facilities, including ADA accessible stalls and loading areas, the location and dimension of backup aisles, bike parking locations, and bike parking detail; 5. location of all existing and proposed curb, gutter, and sidewalk within the site plan including: (a) an indication of the grades; and (b) flow arrows showing direction of storm water surface flows; 6. Asphalt cut lines and cross slopes every 50 feet for road widening 7. location of detention and retention basins with an indication that the basins will include the following: (a) cross sections of detention pond (b) 100 year water level (c) minimum one-foot freeboard; (d) 3:1 slopes or flatter; (e) grass covering and underground sprinkler system; and (f) a designation of the purpose and conditions, if any, of the dedication or reservation; (g) Detention basins or chamber systems shall include the retention of the 80th percentile storm (h) Underground retention/detention facilities shall be registered with DEQ Underground Injection Control Program. 8. Provide access roads to all storm drain and sewer manholes 9. the location, size, and grade of any required piping for irrigation ditches; 10. identification of natural features or sensitive lands including: (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 site plan; and (f) threatened or endangered species habitat areas; 11. location of solid waste containers including design provisions for screening; 12. a circulation plan showing: (a) pedestrian walkways; (b) crosswalks; (c) master planned trail connections; and (d) cross access points: 13. proposed building elevations including dimensions, colors, and proposed building materials with a breakdown showing percentages of each material; G. Items to be shown on the landscaping sheet(s) 1. planting areas with a list of the name, number, species and cultivators and size of plants designated for each area; 2. location, name, and size of all existing trees and shrubs to be incorporated as part of the landscape plan in accordance with Chapter 35 of the Development Code; and 3. location and sizes of any proposed irrigation facilities adequate to maintain the planting areas; H. Items to be shown on the lighting sheet(s) 1. the location of all existing and proposed outdoor lighting fixtures and the manufacturer’s specifications of the area to be lighted with such fixtures including: (1) exterior lights; (2) parking lot lighting; and I. Plan and profile drawing sheet(s) 1. construction and plan and profile drawings of all required public improvements consistent with Lehi City Design Standards and Public Improvement Specifications, including: (a) a utility index or cover sheet at the same scale as the Preliminary Plat which includes all of the information from the approved Preliminary Plat, including any changes or modifications required for preliminary approval and all public utility information; (b) location, depth, pipe type, and slope of all drainage, sewer, and irrigation lines in conformance with the letter issued by the irrigation company, including the location and spacing of all boxes, manholes, and other improvements and details of any detention basins and related piping and orifices; (c) location, pipe type, and size of existing and proposed culinary and pressurized irrigation lines, and associated fire hydrants, valves, and blowoffs, noting where bends are required on water lines; (d) cross sections of all roads including pavement design, base, and subbase amounts, indicating the CBR value used to determine the amount of subbase required on the cross section; (e) location of power line extensions, easements for line extensions, distribution lines and related equipment. (f) For all roadways (g) street signs and traffic control signs; (h) a note stating that three sets of asbuilt drawings shall be submitted to the City upon completion of the public improvements; (i) all other specifications, details, and references required by the Design Standards and Public Improvements Specifications and Standard Drawings at two details per sheet. (j) Include Lehi Power Details appropriate for the site. (k) Commercial Site Details, Transformer Pad, Metering/Service. (l) Residential Details, Equipment locations in the PUE space. (m) For commercial projects including apartments, indicate the power service size (main breaker) and location on both the Site Plan and Utilities Plan. J. Other items that may be required depending on the project 1. 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; 2. drainage system calculations and an explanatory narrative sealed by a licensed engineer, and for detention and retention basins, calculations to justify sizing based on 100-year design storm; and including orifice plate sizing, location and details; 3. For commercial projects including apartments, provide a completed Power Load Estimate work sheet. https://www.lehi-ut.gov/wp-content/up- loads/2020/04/LoadEstimatorSheet.pdf 4. a statement from the appropriate agency accepting responsibility for all surface and subsurface drainage that is directed into channels owned by the agency; 5. a written statement from the appropriate agency such as irrigation companies and private land owners, regarding the effect of the proposed subdivision on any irrigation channels or ditches, and any piping or other mitigation required; 6. a letter from the Army Corp of Engineers regarding any wetland areas within the boundaries of the proposed plat; (a) where required, the California bearing ratio test results; (b) prepared easements for any necessary offsite water, sewer, or drainage easements across privately owned land, and for temporary turnarounds; (c) any deeds or boundary line agreements necessary for approval of the site plan; (d) any required UDOT approvals for access; (e) a commercial subdivision may be required to establish easements, assign addresses, dedicate right of way, to create new parcels, or as required by the Reviewing Departments; (f) an engineer’s estimate of costs for construction of all required public improvements; (g) a title report covering all the property located within the site plan, prepared or updated within 30 days of the date of the site plan approval; (h) a final copy of any restrictive covenants, reservations, or private easements; (i) a letter from the Utah County Health Department regarding any proposed septic tanks or leach fields; (j) prior to issuance of a building permit, staking of the new property line adjacent to existing roads; and; (k) other information required by the Reviewing Departments, Commission, or City Council necessary to evaluate the merits of the proposed site plan.