The purpose of the planned unit development (PUD) is to provide opportunities to create more desirable environments through the application of flexible and diversified land development standards under a professional, prepared comprehensive plan designed to provide for the safety, health and general welfare of the citizens of Riverton.
(Prior code Appx. B § 32(1, 2); Ord. 04-007 § 1, 2004)
A. 
A planned unit development preliminary plan shall be submitted to the city staff to initiate a planned unit development.
B. 
The preliminary plan shall include the following:
1. 
A legal description of the site proposed for development, which shall identify ownership;
2. 
Site Plan and Supporting Maps. A site plan and such additional maps as necessary shall also be submitted, showing the major details of the proposed planned unit development, and shall contain as a minimum the following information:
a. 
The identification and delineation of site conditions, including ground profiles, all irrigation facilities, water courses and unique natural features,
b. 
Proposed lot lines and planned use of each lot,
c. 
A building envelope area or areas shall be delineated showing the approximate location and the maximum and minimum floor areas proposed for all buildings, structures and other improvements, including maximum heights of units. All existing and proposed structures shall be located or constructed within the identified envelopes,
d. 
The location and size in acres or square feet of all areas to be reserved or otherwise used as common open spaces,
e. 
The existing and proposed circulation system of streets and off-street parking areas,
f. 
The existing and proposed utility systems, including sanitary sewers; storm sewers; water, electrical, gas, and telephone lines; cable television; fire hydrants; and trash collection areas,
g. 
A general landscaping plan indicating the character of the treatment of areas used for common open spaces,
h. 
The street cross-section shall be submitted to include proposed curbs and gutters and sidewalk systems,
i. 
Planned recreational facilities. Land and structures, along with accessory equipment, designed and utilized for leisure time activities and of more specific purpose than passive parklike open spaces.
(Prior code Appx. B § 32(b); Ord. 04-007 § 3, 2004)
The following minimum design standards shall apply to any planned unit development:
A. 
Open Space.
1. 
Required common open space shall comprise at least 10% of the total gross area of any residential planned unit development.
2. 
Within such 10%, five percent of the same may be developed for planting, walkways, landscape elements or other approved uses. The remaining five percent shall be developed for active recreational uses and shall be developed in parcels of not less than 3,000 contiguous square feet and not less than 30 lineal feet in the smallest dimension.
3. 
Public dedications of streets and alleys may not contribute to the open space requirement.
4. 
The open space requirement contained in this chapter shall be waived when a minimum of 800 square feet of yard exclusive of the front yard in the unit development is conveyed to and is available for use by each unit owner.
B. 
Streets.
1. 
Street design standards for planned unit developments shall be the same as for conventional subdivisions.
a. 
Access for emergency vehicles and other public vehicles shall be dedicated over all private streets.
2. 
Parking Standards. Parking spaces shall comply with the parking ordinances codified in this code.
a. 
All parking spaces shall be off-street and each space shall be individually accessible and useable.
b. 
All parking areas shall be paved, graded and drained.
C. 
Building Standards.
1. 
The minimum floor area for each living unit shall be 300 square feet.
2. 
Dedicated public access shall be provided between the front and back yards at a maximum of 320 feet spacing. This access shall be paved with asphalt cement or Portland cement concrete, shall be 16 feet wide plus one-half the height of all stories above the first level for the highest building adjacent to the access.
D. 
Front Yard Setback. Front yard setback shall be 20 feet.
(Prior code Appx. B § 32(c); Ord. 04-007 § 4, 2004)
The preliminary plan shall be reviewed by the city staff, the planning commission and the city council. The city council may approve, conditionally approve or reject any preliminary plan.
(Prior code Appx. B § 32(d); Ord. 04-007 § 5, 2004)
After approval of a preliminary plan, a final development plan shall be submitted. This plan shall delineate the uses authorized and shall include the following:
A. 
Final Site Plan. A final site plan shall be submitted. The site plan shall provide sufficient detail to facilitate recording of the plan and ease of building permit administration. The final site plan shall, where possible, locate the exact position of proposed buildings and structures. The final site plan shall be submitted on permanent reproducible material and shall contain the following information:
1. 
Lot lines;
2. 
A building envelope area or areas shall be delineated showing the approximate location and the maximum and minimum floor areas proposed for all buildings, structures and other improvements, including maximum heights of units. All existing and proposed structures shall be located or constructed within the identified envelopes;
3. 
The location and size in acres or square feet of all areas to be conveyed, dedicated, reserved or used as common open space;
4. 
The system of streets, including off-street parking areas and service areas;
5. 
Extent and general location of all minimum landscape features to be provided;
6. 
Proposed treatment of all ground surfaces shall be clearly indicated, including paving, turf, gravel, grading, etc.;
7. 
A general landscaping plan indicating the character of the treatment of areas used for common open spaces;
8. 
A lighting plan which has been designed and approved by the local utility company.
B. 
Subdivision Plat. An official subdivision plat of the site shall accompany the final site plan. This plat shall conform to Title 16. The subdivision shall contain proper dedications for public streets, utility easements, and all other public rights required by the preliminary plan. Approval by the city council of the final site plan and subdivision plat shall be required before filing of the subdivision plat or issuance of building permits.
C. 
Construction of Public Facilities. Engineering design and plans and specifications for construction of storm drains, sewer lines, water lines, street improvements and other public improvements shall be submitted to and approved by the city staff; DEQ and the developer shall execute an agreement in proper form providing for the installation of such improvements prior to submission of the final site plan to the city council.
(Prior code Appx. B § 32(e); Ord. 04-007 § 6, 2004)
All planned unit developments shall meet the requirements set forth in this section, and no final plan shall be approved that does not meet these requirements:
A. 
The developer shall submit a legal instrument or copies of instruments for creating a homeowner's association plan providing for permanent care and maintenance of open spaces, recreational areas, communally-owned facilities, building components in common concern, and private streets. The common open space shall be deeded to the homeowner's association. The applicant shall file the proposed documents governing the association.
B. 
Open space shown on the approved final plan shall not be used for the construction of any structures not shown on the final plan.
(Prior code Appx. B § 32(f); Ord. 04-007 § 7, 2004)
The zoning designation planned unit development may be extended to tracts or parcels where phased development is requested.
A. 
A master plan shall be required for any PUD, which is intended to be developed in phases. The purposes of the master plan is to establish general planning and development control parameters and to identify overall phasing while allowing sufficient flexibility to permit more detailed planning at the time of development.
B. 
The proposed master plan, with the preliminary plans for the first phase of development, shall be submitted to the city and processed as preliminary plans.
C. 
If the PUD is to be developed in phases, a description of each phase and an estimated date of completion for each phase shall be submitted. Any change or alteration in the design of the PUD or completion dates will require the owner to submit an amended master plan to the city staff, planning commission and the city council in compliance with this code.
D. 
Thirty days notice of action is required for changes to master plans.
E. 
Each phase within the PUD shall be planned and related to existing and/or planned services and facilities such that each phase is self-sufficient and not dependent on later phases to meet any requirement of this article and so that failure to proceed to subsequent phases will not have any adverse impacts on the PUD, its surroundings, or the community in general. Each phase shall be planned so as to ensure that open space and any other amenities will be provided along with the proposed residential construction in each phase. Except as permitted, the density of any single phase shall not exceed the permitted density of the district in which it is located.
(Prior code Appx. B § 32(g); Ord. 04-007 § 8, 2004)