Following preliminary design plan approval, the applicant shall submit a final plan for review by the zoning administrator and technical review committee (TRC). The final plan shall contain all the information required by this section and shall provide technical and engineering solutions to all previously identified problems.
A. Documents For Zoning Administrator:
1. Application for final approval.
3. Drawings: plat, site plan, plan and profiles, details, estimated quantities.
6. Stormwater management plan.
7. Mitigation of adverse conditions plan.
8. Development agreement.
B. Drawing Requirements For Zoning Administrator:
1. Preliminary Plans: Approved preliminary plans and details shall be included in the final plans.
a. Description of project boundaries, public streets and easements (utility, drainage access, etc.), as well as other design elements.
b. Names and addresses of the project or development, the owner or owners of record, the developers, the engineers, the surveyors and/or the architects.
c. Astronomic north arrow and basis of bearing.
d. Total acreage of development project, including number of lots and the acreage of each.
e. Township, range, section and quarter section (if portion) information.
g. City engineer's review certificate, unless waived on plat.
h. City attorney's review certificate, unless waived on plat.
i. Planning commission approval certificate on plat.
j. City council approval certificate.
k. Recording procedure by the county recorder on plat.
l. Owner's dedication of property to the city or the public.
m. Any additional information required by city ordinance, city council or state law on plat.
3. Plat/Plan Format: The dimensions and format of the plan shall conform to city requirements. Plans may be submitted on eleven inch by seventeen inch (11" x 17") sheets, provided the scale does not exceed one inch equals forty feet ( 1" = 40') and the plan is legible. Plans may also be submitted on twenty four inch by thirty six inch (24" x 36") sheets, provided the scale does not exceed one inch equals one hundred feet (1" = 100'). Subdivision plats shall be submitted on twenty four inch by thirty six inch (24" x 36") velum, Mylar or equivalent approved by the city engineer. In addition, all the above shall be submitted on electronic disk in AutoCad.
4. Typical Plans: All lands within the boundaries of the development shall be accounted for in the plans as lots, sidewalks, pathways, streets, alleys, excluded parcels, common areas, building areas, parking areas, drainage facilities, detention basins, bridges, landscape areas, permanent open space, etc., and shall contain the following:
a. Lot lines, site grading, street improvements, drainage, water lines, sewer lines, electricity, natural gas, telephone, fiber optics, cable television, secondary water lines and any other public utility locations.
b. In subdivisions, all blocks and lots within each block shall be consecutively numbered. Excepted parcels shall be marked "not included in this development".
c. Streets, sidewalks and alleys shall be designated as such, and streets shall be numbered with bearings and dimensions given. Street names may be submitted for city approval and shall not duplicate or be similar to existing names of city or county streets. All streets shall include numerical designations. They shall not be included on the same sign blade as street names.
d. All easements shall be designated as such, with bearings and dimensions given.
e. Parcels not contiguous shall not be included in one plan, nor shall more than one plan be made on the same sheet. Contiguous parcels owned by different parties may be embraced in one plan, provided all owners join in dedication and acknowledgment.
5. Cross Sections: Provide detailed design street cross section information at one hundred foot (100') intervals along all street alignments associated with the development. Refer to the city acceptable design for typical street cross sections. Show pavement and subgrade design calculations (based on geotechnical study). Provide detailed cross sections for water and sewer line connections, complex valve and fitting arrangements, detention basins and catch basins, with supporting calculations and details.
6. Profiles: Provide profiles for all existing and designed streets and utilities with elevations at fifty foot (50') intervals for: street centerline, top back of curb, water lines, sewer lines and drainage lines. The profiles shall indicate all vertical curves, grade changes, sewer manholes, water valves, cleanouts and catch basins. Include sewer design, demand and capacity calculations.
a. A geotechnical study shall be prepared and submitted by a qualified engineer on all developments, subdivisions, main structures and buildings that will be occupied. Exceptions: single lots in approved residential, commercial, manufacturing or industrial subdivisions and garages or carports, minor additions or remodels, and site accessory improvements or as otherwise recommended by the zoning administrator, city engineer or building inspector and approved by the city council.
b. The geotechnical study shall be derived from exploratory test pits or boring. At a minimum, one test pit from each quadrant of the proposed site and one or more from the area directly under the proposed structures shall be completed. The geotechnical study shall include the following:
(1) Cover sheet and introduction.
(3) Proposed construction.
(4) General site construction.
(5) Subsurface investigation.
(7) Subsurface conditions.
(9) Geological conditions and mitigation: seismic zone, earthquake faults, cliffs, alluvial fans, rockfalls, landslides, wetlands, subsidence, ground water, radiological.
(11) Subsurface drainage; foundation drainage; sumps.
(13) Moisture control and surface drainage.
(15) Mass grading, backfill and compaction.
(16) Utility trenching, backfill and compaction.
(19) Laboratory test results.
(22) Site plan and location of test pits.
(24) Consolidation swell tests.
8. Stormwater Management Plan: A stormwater management plan shall be prepared and submitted by a registered professional engineer for all developments, or as otherwise required by the city engineer. The stormwater management plan shall include the following:
a. Topographic survey of the proposed site that shows the existing drainage and irrigation systems, including all rivers, creeks, streams, washes and floodplains. Show predevelopment and postdevelopment contours at two foot (2') intervals. Show locations and elevations of proposed structures. Establish and show the finished floor elevations (first and basement floors) of proposed buildings. Show elevations of all adjacent and adjoining properties. Show grades of all impervious surfaces.
b. Plan, profile and detail drawings and runoff calculations for new, temporary or modified drainage systems. This includes all detention basins, structures, catch basins, piping, open channels, bridges and other specific drainage features.
c. Drainage analysis that shows the peak flow rate and peak volume calculations for the predevelopment and postdevelopment conditions.
d. Analysis and design criteria:
(1) The rational method is to be employed for watersheds less than or equal to ten (10) acres. Peak rate and volume calculations are to be based on the 50-year 1-hour storm for the storm drainage network. Use an intensity of 1.10 inches per hour for one hour or other local reliable precipitation data.
(2) The natural resource conservation service (NRCS) method is to be used on watersheds larger than ten (10) acres. Peak rate and volume calculations are to be based on the 100-year 24-hour storm event with a type 2 distribution for the storm drainage network.
(3) Postdevelopment conditions shall not exceed predevelopment conditions. Check for the 5-, 10-, 25-, 50- and 100-year storms and related flood routing. Delineate the watersheds for each catch basin and inlet. Design the storm sewer pipe network for the 50-year 1-hour storm. Evaluate the effects of the 100-year storm. Runoff and flooding shall be contained within the streets and storm sewer pipeline network.
(4) Stormwater detention basins, inlets and outlets shall be designed for the 100-year storm event.
e. Each lot will be developed and built so that there is a positive grade away from all structures. Property owners shall be responsible for controlling drainage runoff that is generated on site. On site detention shall be developed as necessary. Discharge of runoff from the site shall be directed towards approved street and natural drainageways.
f. Structures on lots shall not be built with basement garage driveways or basement stair accesses that directly connect to the street.
g. Evaluation of potential pollution, contamination and construction site discharge through stormwater runoff from the facilities or features of the development. The results of the evaluation may require source control, pretreatment and pollution prevention practices to be implemented to control polluted stormwater runoff.
9. Survey Information: Plans for land surveying shall be prepared and certification made as to plan accuracy by a registered professional land surveyor properly licensed to do such work in the state. A workmanlike execution of the plan shall be made in every detail. A poorly drawn or illegible plan is sufficient cause for final plan rejection. Engineering plans and details shall be calculated, designed, prepared or reviewed by a qualified and licensed engineer. Plans shall provide the following survey information:
a. Bearings, distances and curve data for all perimeter boundary lines with ties to two (2) existing legal survey monuments unless otherwise required by the city engineer. A traverse of the perimeter boundary lines from the existing legal survey monuments shall have an error of closure of not greater than three (3) in one hundred (100). Bearings, distances and curve data shall also be given for all interior lot lines and dimensions, including irregularly shaped lots. Distances shall be given in hundredths of a foot, angles in decimal degrees to hundredths of a degree, and bearings in degrees-minutes-seconds of an arc.
b. Sufficient curve data shall be given to enable the reestablishment of the curves on the ground. Include a table of curve data. This curve data shall include the following information:
(5) Chord (bearing and distance).
c. Parcels bounded by a body of water shall have the bearings and distances of a closing meander traverse given and notation made that the parcel includes all land to the water's edge or high water mark, or 100-year flood elevation.
d. Legal descriptions and labels of major parcels, road dedications and parcels to be dedicated to the public.
e. Parcels shall include area in acres.
f. All survey work, property descriptions, parcel closure and plan/plat preparation shall be double checked by the city engineer.
C. As Built Construction Drawings:
1. As built construction drawings shall be submitted for all required public improvements once constructed. Submission of as built construction drawings will be required prior to the issuance of an occupancy permit or release of the development agreement. Include any common facilities that could ever apply for public acceptance or maintenance.
2. As built construction drawings shall be submitted in a paper copy and in an electronic format contained on a compact disk. The format shall be AutoCad, adobe acrobat or other format approved by the city engineer.
D. Final Plan Review And Approval:
1. When a final plan/plat has been received, it shall be acted upon at a planning and zoning commission meeting scheduled for development review within thirty (30) days of receipt of final plan application by the zoning administrator. The planning and zoning commission shall not approve any final plat unless it is reviewed and approved by the city attorney and city engineer in the spaces provided.
2. The zoning administrator will distribute copies of the final plan and/or plat for review by the technical review committee (TRC) before docketing the application for final approval on the planning and zoning commission agenda.
3. The planning and zoning commission shall review the final plan/plat at a regularly scheduled public meeting. If the final plan/plat and all supplementary data comply with the applicable requirements of these regulations and the requirements of the approved preliminary design plan, the planning and zoning commission shall certify approval of the plan on the space provided.
4. After review of the final plan/plat at the public meeting, the planning and zoning commission shall send written notification of its review and official action taken to the city council. This notification shall specify any modifications to the final plan/plat, if any, which were made incidental to final approval of such plan/plat by the planning and zoning commission.
5. The city council shall review the final plan within forty five (45) days of receipt of transmittal from the planning commission, at a regularly scheduled public meeting, or as otherwise scheduled by the city council.
6. The only basis for rejection of a final plan/plat shall be its nonconformance to adopted rules, regulations and ordinances currently in force and affecting the land and its development, its lack of conformance with the approved preliminary design plan/plat, technical inaccuracies or insufficiencies, and poor workmanship in preparation of the plans/plat and documents.
7. The city council shall review and execute a development agreement and establish the kind, amount and method of financial security to be provided by the developer to guarantee completion of the required public improvements.
8. If the city council determines that the final plan/plan submission complies with the applicable requirements of this title, they shall certify approval of the plan; provided, however, that the city council shall approve no final plan/plat unless accompanied by a plat (if a subdivision), certified by the city engineer and city attorney.
E. Submit Approved Final Plan To City Council: Following final plan/plat approval by the planning and zoning commission, the zoning administrator shall forward the approved final plan/plat to the city council for review. The applicant shall appear before the city council to answer questions, to negotiate any required bond or financial security, and to negotiate any proposed dedications. The city council shall either approve or reject the final plan/plat. Upon approval, the applicant/owner shall submit the plan to the county recorder to record the plat. The costs of recording shall be paid by the applicant/owner. (Ord. 2008-002, 2008)