[Ord. No. 509, 8-11-2021]
A.
In the subdividing of any land within the jurisdiction, due
regard shall be shown for all-natural features, such as tree growth,
natural watercourses or other similar elements, which, if preserved,
would add attractiveness to the proposed development.
B.
The natural topography shall be retained, wherever possible,
in order to prevent additional runoff onto adjoining property and
to avoid extensive regarding of the site.
[Ord. No. 509, 8-11-2021]
A.
To the maximum extent practicable, development shall be located
to preserve the natural features of the site, to avoid areas of environmental
sensitivity, and to minimize negative impacts and alteration of natural
features. Significant trees or stands of trees shall be preserved
as undeveloped open space, to the extent consistent with reasonable
utilization of land, and in accordance with applicable State or local
regulations.
B.
Environmental feature areas include the 100-year floodplain,
drainage areas, and significant water resources such as lakes, creeks
and rivers.
[Ord. No. 509, 8-11-2021]
A.
Purpose. The City contains many natural amenities, including
stream corridors, river corridors, natural drainages, significant
viewsheds and hillsides, as well as tree cover, and open space, all
of which contribute to the City's character, quality of life and property
values. The regulations of this Section are intended to implement
the Kimberling City Comprehensive Plan and ensure that the natural
character of the City is reflected in patterns of development and
redevelopment, and significant natural features are protected and
incorporated into open space areas.
B.
Steep Slope And Ridgeline Development.
1. Purpose. The purpose of this Subsection is to:
a. Prevent soil erosion and landslides;
b. Protect the public by preventing or regulating development
in hazardous areas, such as locations with steep slopes;
c. Provide safe circulation of vehicular and pedestrian
traffic to and within hillside areas and provide access for emergency
vehicles necessary to serve the hillside areas;
d. Encourage only minimal grading that relates to the
natural contour of the land;
e. Preserve the most visually significant slope banks
and ridgelines in their natural state;
f. Preserve visually significant rock outcroppings,
native plant materials, natural hydrology and other areas of visual
significance;
g. Encourage variety in building types, grading techniques,
lot sizes, site design, density, arrangement and spacing of buildings
in developments;
h. Encourage innovative architectural, landscaping,
circulation and site design;
i. Discourage mass grading of large pads and excessive
terracing; and
j. Require revegetation and reclamation of slopes disturbed
during development.
2. Applicability. This Subsection shall apply to any
development or subdivision proposal or lot created after the effective
date of this Code for properties with an average slope of fifteen
percent (15%) or greater, or where adverse conditions associated with
slope stability, erosion or sedimentation are present as determined
by the Administrative Officer. Determinations of adverse conditions
shall be identified by the Administrative Officer within ten (10)
days of applicable application filing.
3. Development On Slopes Greater Than Twenty Percent
(20%). Site areas with slopes greater than twenty percent (20%) shall
remain undisturbed except as follows:
a. This requirement shall not apply to small, isolated
steep slope area within a site that do not exceed two thousand five
hundred (2,500) square feet.
b. Slope areas of twenty percent (20%) or greater shall
count toward minimum lot size.
c. Development is permitted outside of the slope area
of twenty percent (20%) if the Administrative Officer determines that
there is sufficient buildable area on the lot for the proposed structure
or where buildable area can be made available through the minor modification
process.
4. Development On Slopes Between Fifteen Percent (15%)
And Twenty Percent (20%). The following standards apply to all proposed
development on sites where the average slope of the site measures
between fifteen percent (15%) and twenty percent (20%).
a. Site Design.
(1) Roads and building sites shall be oriented to minimize
grading.
(2) Buildings shall be oriented to consider views from
the site as well as the aesthetic impact of views of the site from
surrounding properties.
(3) Hilltops, if graded, should be rounded to blend
with natural slopes rather than leveled.
(4) Parking areas should be constructed on multiple
levels and follow natural contours as necessary to minimize cut and
fill.
(5) Roads should follow natural topography to the extent
feasible, to minimize cut and fill. Necessary grading should be constant
half-cut and half-fill along the length of the road (versus all cut
or all fill at points) unless other arrangements would result in less
severe alteration of natural terrain.
5. Utilities On Slopes.
a. Utility easements are not permitted to follow slope
lines and may only cross slope lines at ninety-degree angles.
6. Raising Or Lowering Of Natural Grade. The original,
natural grade of a lot shall not be raised or lowered more than four
(4) feet at any point for construction of any structure or improvement,
except:
a. The site's original grade may be raised or lowered
a maximum of six (6) feet if retaining walls are used to reduce the
steepness of man-made slopes, provided that the retaining walls comply
with the requirements set forth in this Subsection.
b. As necessary to construct a driveway from the street
to a garage or parking area, grade changes or retaining walls up to
six (6) feet may be allowed.
c. For the purposes of this Subsection, basements and
buildings set into a slope are not considered to lower the natural
grade within their footprint.
7. Vehicular Routes. The following regulations apply
to vehicular routes on slopes of fifteen percent (15%) or greater.
a. Streets, roads, private access roads and other vehicular
routes shall, to the maximum extent feasible, follow natural contour
lines.
b. Grading for streets, roads, private access roads
and other vehicular routes shall be limited to the paved portion of
the right-of-way, plus up to an additional ten (10) feet on either
side of the paved portion as needed, except that when developing access
on slopes in excess of twenty-five percent (25%) only the paved right-of-way
shall be graded, plus the minimum area required for any necessary
sidewalk improvements. The remainder of the access right-of-way shall
be left undisturbed to the maximum extent feasible.
8. Trails. Public trails are permitted on all slopes.
Private trails may be allowed if the Administrative Officer determines
that there will be no significant adverse impacts, such as increased
erosion potential.
C.
Erosion Prevention And Sediment Control.
1. Standards. All new development shall be subject
to the following erosion prevention and sediment control standards:
a. Compliance with applicable City and State requirements.
b. Water shall be carried off the site without damage
to downhill public or private properties and/or improvements.
c. Water shall be directed away from buildings and
other heavily used areas.
d. Post-development discharge of stormwater shall not
exceed predevelopment discharge for a 100-year storm event.
e. Unnecessary ponding not intended for detention or
retention purposes should be avoided.
f. Erosion control measures as necessary to control
erosion and sedimentation during site development and construction
shall be implemented. These may include, but are not limited to, the
placement of hay bales and siltation fences.
2. Grading Plan; Revegetation Of Disturbed Sites. A
grading plan, submitted pursuant to Section 405.030(N), Grading Permit,
and demonstrating compliance with the above standards is required.
The grading plan shall include a section outlining the type and extent
of revegetation proposed to accomplish the following requirements:
a. Following construction, the site shall be reclaimed and revegetated following the standards of Section
510.040 and Section 400.630.
b. In areas of subdivisions and development sites where landscaping is not required or not anticipated by the Administrative Officer, the developer shall reclaim all disturbed property and replant the entire area with native vegetation as described in Section
510.040 and Section 400.630.
c. Topsoil shall be stockpiled and placed on disturbed
areas.
d. Irrigation shall be provided to the revegetated
areas if the Administrative Officer determines that it is necessary
to ensure survival of native species planted.