[Sub. Regs. Art. IX]
Notwithstanding any of the provisions of these regulations,
the following requirements shall constitute the minimum standards
of design and improvements in proposed subdivisions of areas containing
hilly and mountainous conditions. Any engineering variation for those
herein provided must be fully substantiated by satisfactory engineering
justification to the Commission before deviations by the Commission
will be approved. The subdivider shall follow all requirements contained
herein for filing preliminary and final plats.
[Sub. Regs. §483.280; Ord. No. 343 §1, 5-29-1979]
A.
Any
portion of a proposed subdivision containing hillsides shall be platted
on the basis of lot size average. The number of lots in any single
portion of a hillside development shall be determined on the basis
of lot slope and the drainage capacity for that portion of the subdivision
calculated from the number of lots to be platted.
B.
Lots
not abutting on a street may be permitted if it is impractical to
extend a street to building sites in a hillside pocket, if an adequate
easement is provided by the subdivider for each of the affected lots
and, provided further, that evidence satisfactory to the Commission
is presented that the owners of each of such lots will be obligated
to maintain such easements.
C.
The
Commission may permit a deviation in the front yard setback areas
in order to permit garages and driveways to be placed at street level.
Where excess lot slopes are to be used as building sites, the subdivider
shall show on the plat the location of all buildings or structures
proposed. No structure or building shall be permitted to project into
a street right-of-way. If a lot is of such nature as to prohibit adequate
space for an off-street parking area, the subdivider shall provide
parking bays within three hundred (300) feet of such lot. Each bay
shall contain at least two (2) parking spaces for each dwelling unit.
Sub. Regs. §483.290; Ord. No. 343 §1, 5-29-1979]
B.
Design standards and improvement requirements for horizontal and vertical street curves may be reduced to a seventy-five (75) foot radius for minor streets. Standards for street grades shall be the same as Article V, Section 410.180(F), except that some grades on minor streets may be permitted up to twenty percent (20%) for short straight distances. All streets which have grades of fifteen percent (15%) or more shall have straight curbs installed.
[Sub. Regs. §483.300; Ord. No. 343 §1, 5-29-1979]
Contour lines at five (5) foot intervals shall be shown on the
plat where the average slopes exceed six percent (6%) and at ten (10)
foot intervals where the average slope is greater than twenty percent
(20%). Where slopes in excess of fifteen percent (15%) occur, the
preliminary plat shall indicate the general location and magnitude
of all cuts and fills. A grading plan shall be submitted with the
preliminary plat showing how the proposed grading will affect the
drainage of the surrounding area and the nature of the improvements
which are proposed, if the average slope of the hillside subdivision
is in excess of twenty-five percent (25%).
[Sub. Regs. §483.310; Ord. No. 343 §1, 5-29-1979]
A.
Cuts, excavation, grading and filling, where same materially changes the site and its relationship to the surrounding property, shall not be permitted if such excavations, grading or filling results in slopes exceeding those found in the Table contained in Article VI, Section 410.270(A)(2), Subsection (A)(2) for abutting lots or between adjoining tracts of land, except where adequate engineering facilities are constructed to prevent slides and erosion.
B.
Where
a cut or fill area is outside the normal right-of-way of the street,
an easement shall be provided of sufficient width and area to permit
the required side slopes, drainage channels, warping and rounding
of cross section to be constructed and maintained.
C.
Structures
or buildings when located near cuts or fills shall have a setback
line of not less than ten (10) feet from the crest of fills up to
twenty-five (25) feet in height and the distance will be increased
proportionally for higher fills. On cuts, a building or structure
shall have a setback line of not less than twenty (20) feet distant
from the base of the slope.
D.
In
any fill area, compaction of fill is mandatory. Compaction of fill
for supporting a structure should be ninety-five percent (95%) AASHTO
T99 and hillside benched to receive fill lifts. Control of surface
water is extremely important to stability of such fill.
[Sub. Regs. §483.320; Ord. No. 343 §1, 5-29-1979]
A.
The improvement plans for an adequate stormwater drainage system including all necessary open ditches, pipes, culverts, intersectional drains, drop inlets, bridges and other accessory structures and improvement which are required for the proper drainage of all surface waters shall be provided. This system must prevent the infiltration of water in areas of fills or cuts thereby causing the land to slip or collapse. Adequate provision and maintenance must be made for on-lot drainage channels and control of erosion on slope areas for either cuts or fills. In addition, the improvement plans shall be reviewed by the Commission in terms of the requirement found in Article VI, Section 410.280(D).
B.
Plans
for the use or development of any area exempted from the application
of the requirements of the Pevely stormwater ordinance shall be accompanied
by specific stormwater drainage provisions when submitted for Planning
and Zoning Commission review.
[Sub. Regs. §483.330; Ord. No. 343 §1, 5-29-1979]
The improvement plans for the water supply system shall comply with Article VI, Section 410.280(B).
[Sub. Regs. §483.340; Ord. No. 343 §1, 5-29-1979]
The improvement plans for the sewage disposal system shall comply with Article VI, Section 410.280(C).
[Sub. Regs. §483.350; Ord. No. 343 §1, 5-29-1979]
Utility easements will be as required by Article V.
[Sub. Regs. §483.360; Ord. No. 343 §1, 5-29-1979]
(See Title VII for Sewage Regulations.)
[Sub. Regs. §483.370]
Fire protection shall comply with the applicable Sections in Article VI.
