(See §
98-28A, regarding when a preliminary plan is required.)
A. All of the following information and materials listed
in this section are required as part of all preliminary plans for any
land development and any major subdivision. This list of requirements
shall serve both to establish the requirements, and as a checklist
for the applicant and the Township to use to ensure completeness of
submissions. The applicant shall submit completed photocopies of this
section as part of the application.
B. The required information listed in this section may
be combined or separated onto different sheets, provided that all
information is clearly readable.
C. Deferral of information. See §
98-7C(3), which may allow an applicant to defer submitting of engineering details from the preliminary to the final plan stage.
All certification shall comply with the state
professional licensing laws. All subdivisions of land shall be certified
and stamped by a registered land surveyor. At least one set of all
plans provided to the Township, including revisions, shall bear original
signatures and original seals of plan preparers, which shall be marked
as a "Township File Copy."
As part of the submittal of a sketch plan, preliminary
plan or conditional use, whichever comes first, for a major subdivision
or land development that involves over three acres of land for a nonresidential
project or six or more dwelling units for a residential project, the
applicant shall provide the following mapping and prove to the Planning
Commission that the following process was followed in designing the
proposed development.
A. Applicants are strongly encouraged to submit these
sketches as part of the sketch plan process, to avoid delays to the
applicant in preliminary plan approval. Submittal at the sketch plan
stage will greatly increase the likelihood that all issues will be
able to be resolved in time to meet the standard ninety-day time clock
for approval of a preliminary plan, without needing time extensions.
B. This process is intended to show everyone how the
special features of the property relate to resource areas on adjacent
lands, and how the development will properly relate to the features
of the land that are most worthy of conservation. See the "existing
resources and site analysis map" provisions in Part D of the Preliminary
Plan for Major Subdivision or Land Development Checklist and List
of Submittal Requirements. Existing conditions shall be accurately mapped. For the sole purposes of meeting this §
98-31, the mapping of proposed development may be at a sketch plan level of detail.
(1) Delineation of open space. Using the map of existing resources and site analysis map, the applicant shall delineate areas that are proposed to be preserved as conservation open space (in the case of a conservation design subdivision), common open space (if required by §
98-60 of this chapter or other sections of Chapter
119, Zoning) and/or otherwise through conservation easements.
(a)
If a conservation design subdivision is proposed, then the applicant shall show compliance with the applicable requirements of Chapter
119, Zoning, including but not limited to the following:
[1]
Providing calculations of the minimum percent
and acreage of required conservation open space, which shall be submitted
at the sketch plan stage or the preliminary plan stage, whichever
submission occurs first.
[2]
Proposed conservation open space shall be designated using the existing resources and site analysis map as a base map. The applicant shall prove compliance with applicable provisions of Chapter
119, Zoning, and §
98-76 of this chapter. Primary conservation areas shall be delineated comprising one-hundred-year floodplains, wetlands and slopes over 25%. (Note: The definition of primary conservation areas is independent of any density factors that may be required to be applied under Chapter
119, Zoning.)
[3]
The proposed conservation open space shall maximize opportunities to interconnect open spaces with important natural features and common/conservation open space on neighboring properties (see the "context map" in §
98-29). The applicant should consider the Map of Potential Conservation Areas in the West End Recreation and Open Space Plan, unless or until a more detailed map is prepared for Chestnuthill Township.
[4]
In delineating secondary conservation areas, the applicant shall prioritize natural and cultural resources on the tract in terms of their highest to least suitabilities for inclusion in the proposed conservation open space in consultation with the Planning Commission and in accordance with §
98-76 of this chapter and applicable sections of Chapter
119, Zoning.
[5]
On the basis of those priorities and practical
considerations given to the tract's configuration, its context in
relation to resource areas on adjoining and neighboring properties,
and the applicant's subdivision objectives, secondary conservation
areas shall be delineated to meet at least the minimum area percentage
requirements for conservation open space and in a manner clearly indicating
their boundaries as well as the types of resources included within
them.
(b)
If a conservation design subdivision is not
proposed, the applicant shall show measures that will be used to minimize
impacts upon important natural features. The applicant shall show
that every reasonable effort has been made to locate development to
avoid the over 25% slopes, one-hundred-year floodplain and wetlands,
and minimize impact upon the secondary conservation areas. In addition
to meeting any requirement for common open space, important natural
features should also be protected as part of individual lots (such
as large rear yards and/or through conservation easements).
(2) Potential development areas concept map. Based upon
consideration of the existing features map and the primary and secondary
conservation areas (as described above), the potential development
areas shall be mapped. These potential development areas are areas
that are best suited for the majority of the development on the tract.
(3) Location of home/development sites. In respect of the primary and
secondary conservation areas described above, the approximate proposed
locations of new homes/principal buildings shall then be selected.
It is recognized that on-lot septic system suitability needs to influence
these choices, when septic systems are used. It is also recognized
that some intrusions into the secondary conservation areas may be
necessary to allow reasonable uses of the land, provided that such
development is carefully located and designed to minimize impacts
upon valuable resources and features. These home/development sites
can also be selected to maximize views, including views into the conservation
areas.
[Amended 5-1-2014 by Ord. No. 2014-02]
(a)
While the mapping of existing features required by this section
is required to be accurate and to scale, the locations of proposed
home/development sites, lot lines, streets and trails may be at a
sketch plan level of detail for the purposes of complying with this
section.
(b)
The applicant shall provide a written and graphic analysis of
how the proposed development will respect and incorporate the important
resources of the site and be coordinated with resources, open space/trail
corridors and views on surrounding properties. This may involve an
overlay map that shows important natural features and proposed development.
(4) Layout of infrastructure. A sketch of the tentative infrastructure
layout shall then be designed to serve the appropriate building sites.
[Amended 5-1-2014 by Ord. No. 2014-02]
(a)
With home/development site locations identified, applicants
shall delineate a street system to provide vehicular access to each
home/development site in a manner conforming to the tract's natural
topography and providing for a safe pattern of circulation and ingress
and egress to and from the tract.
(b)
Streets shall avoid or at least minimize adverse impacts on
the conservation open space areas. To the greatest extent practicable,
wetland crossings and new streets or driveways traversing slopes over
15% shall be avoided.
(c)
Street connections shall generally be encouraged to minimize
the number of new culs-de-sac and to facilitate easy access to and
from home/development sites in different parts of the tract and on
adjoining parcels.
(d)
A proposed network of trails shall also be shown for residential
projects, connecting streets with various natural and cultural features
in the conserved conservation open space. Potential trail connections
to adjacent parcels shall also be shown, in areas where a municipal
trail network is envisioned.
(e)
Preferred locations for stormwater and wastewater management
facilities shall be identified using the Existing Resources/Site Analysis
Map as a base map. Opportunities to use these facilities as a buffer
between the proposed conservation open space and development areas
are encouraged. The facilities should be located in areas identified
as groundwater recharge areas as indicated on the Existing Resources/Site
Analysis Map. The design of the facilities should strive to use the
natural capacity and features of the site to facilitate the management
of stormwater and wastewater.
(5) Drawing the lot lines. Tentative lot lines should
then be drawn on the site to encompass the proposed building sites,
to result in a development concept plan. Once this sketch is prepared,
then more detailed engineering may be completed.