All streets and alleys shall be improved solely at the expense
of the developer in accordance with the requirements set forth herein.
All streets shall be graded as hereinafter provided.
A. New streets.
(1) All new streets which are created and dedicated for use within a
subdivision shall be graded, drained and surfaced in accordance with
the minimum requirements hereinbelow set forth and in a manner which
will provide complete and adequate drainage of all the streets, alleys,
and public grounds which may be necessary in order to provide adequate
and satisfactory drainage along the side of any existing public street
which lies adjacent to the subdivision.
(2) In general, all such new streets within the subdivision and all work
to be undertaken thereon shall be designed and constructed according
to IDOT Roads and Bridges Standard Specifications as the same are
in effect at the time the preliminary plat and plans for such improvement
work are submitted for approval.
B. Grading roadway and side slopes. The roadway shall be considered
to be that part of the improvement which lies between the right-of-way
lines.
Alleys, where permitted or required, shall be constructed as
specified for local streets.
Underground utilities in streets or rights-of-way or in easements
shall be installed prior to the construction of such streets and/or
alleys. Wherever possible, utilities will be placed in rear lot easements,
with street placement permitted in only the most unusual circumstances.
The earth subbase shall be compacted to not less than 95% of
the standard laboratory density and shall extend across the entire
width of the roadway. Soil analysis shall be performed to determine
the standard laboratory density in accordance with Article 207.05
of the current edition of the Illinois Department of Transportation's
Standard Specifications for Road and Bridge Construction. The results
of the soil analysis shall be filed with the Village Engineer, and
compaction testing of the earth subbase shall be required in the areas
of both driving lanes at a minimum sampling rate of one test per lane
per 500 lineal feet of roadway length. All tests required shall be
run by the subdivider's authorized agent and the results, along with
the certification of the subdivider's engineer, shall be filed with
the Village Engineer.