Prior to the final approval of subdivision and/or land development
plans, or the issuance of any permit or the commencement of any land
disturbance activity, the owner, subdivider, developer or his agent
shall submit a stormwater management plan to Union Township for approval.
The following activities are specifically exempt from the plan
preparation provisions of this chapter.
A.
Land disturbances affecting less than 1,000 square feet of ground
surface.
B.
Land disturbance associated with existing one and two-family dwellings.
C.
Use of land for gardening for home consumption.
D.
Agriculture when operated in accordance with a conservation plan
or erosion and sedimentation control plan prepared by the Conservation
District.
E.
Forest management operations which are following the Department of
Environmental Protection management practices contained in its publication
"Soil Erosion and Sedimentation Control Guidelines for Forestry" and
are operating under an erosion and sedimentation control plan.
The following items, where appropriate, shall be included in
the plan:
A.
General.
(1)
General description of project.
(2)
General description of erosion and sedimentation controls.
(3)
General description of stormwater controls both during and after
development.
(4)
Expected project time schedule, including anticipated start and completion
dates.
(5)
Training and experience of person(s) preparing the plan.
B.
Map(s) of the project area, showing:
(1)
The location of the project relative to highways or other identifiable
landmarks.
(2)
Existing contours at intervals of two feet. In areas of steep slopes
(greater than 15%), five-foot contour intervals may be used.
(3)
Streams, lakes, ponds or other bodies of water within the project
area or which will be affected by runoff from the project.
(4)
Other physical features, including existing drainage swales and areas
of natural vegetation to be preserved.
(5)
Locations of proposed underground utilities, sewers and waterlines.
(6)
An overlay showing soil types and boundaries.
(7)
Proposed changes to land surface and vegetative cover.
(8)
Areas to be cut or filled.
(9)
Proposed structures, roads, paved areas and buildings.
(10)
Final contours at intervals of two feet. In areas of steep slopes
(greater than 15%), five-foot contours may be used.
C.
Erosion and sedimentation controls.
(1)
The staging of all earthmoving activities must be described, including
cuts and fills, streets, underground utilities, sewer and water lines,
buildings, driveways, parking areas, recreational areas, other structures,
etc.
(2)
Type, location and extent of all erosion and sedimentation control
measures must be shown on a map and described, including all calculations,
assumptions and criteria used in designing the controls, and a schedule
for their implementation.
D.
Stormwater management controls.
(1)
All stormwater management controls must be shown on a map and described,
including:
(a)
Groundwater recharge methods such as seepage pits, beds or trenches.
When these structures are used, the locations of septic tank infiltration
areas and wells must be shown.
(b)
Other control devices or methods such as rooftop storage, semipervious
paving materials, grass swales, parking lot ponding, vegetated strips,
detention or retention ponds, storm sewers, etc.
(c)
Schedule for installation of the control measures and devices.
(2)
All calculations, assumptions and criteria used in the design of
the control device or method must be shown.
E.
Maintenance program. A maintenance program for all stormwater management
control facilities must be included. This program must include the
proposed ownership of the control facilities and detail the financial
responsibility for any required maintenance.
A.
Union Township shall forward a copy of the plan to the Washington
County Planning Commission and the Conservation District for review.
B.
The Union Township Engineer and Planning Commission shall review
the plan and comments from the Conservation District and the Washington
County Planning Commission and shall recommend whether the plan be
approved or disapproved.
C.
Union Township shall notify the applicant within 30 days from receipt
of a complete plan submission of its decision.
D.
A disapproval shall contain the reasons for disapproval and a listing
of the plan deficiencies.
E.
Failure of Union Township to render a decision within the thirty-day
time limit shall be deemed an approval.
A modification to an approved stormwater management plan which involves a change in control methods or techniques, or which involves the relocation or redesign of control measures, or which is necessary because soil or other conditions are not as stated on the approved application (as determined by the Union Township Engineer), shall be approved under the procedures contained in § 225-18 of this chapter. The Union Township Engineer shall notify the applicant when such plan modification is required.
