A.
For any regulated activity within a protected watershed (high quality
or exceptional value), the applicant shall meet requirements as contained
in 25 Pa. Code Chapter 93, as required and applicable.
B.
Existing resources and site analysis plan shall be prepared for all
regulated activities other than construction of a single-family residence
(and ancillary structures) to provide the developer and the municipality
with a comprehensive analysis of existing conditions, both on the
proposed development site and within 500 feet of the site. Conditions
beyond the parcel boundaries may be described on the basis of existing
published data available from governmental agencies and from aerial
photographs. The municipality shall review the plan to assess its
accuracy, conformance with municipal ordinances, and likely impact
upon the natural and cultural resources on the property. The following
information shall be required:
(1)
Complete current perimeter boundary survey of the property to be
subdivided or developed prepared by a registered surveyor, showing
all courses, distances, and area and tie-ins to all adjacent intersections.
(2)
Natural features, including:
(a)
Contour lines at intervals of not more than two feet. (Ten-foot
intervals are permissible beyond the parcel boundaries, interpolated
from USGS published maps.) Contour lines shall be based on information
derived from a topographic survey for the property, evidence of which
shall be submitted, including the date and source of the contours.
Datum to which contour elevations refer and references to known, established
benchmarks and elevations shall be included on the plan.
(b)
Steep slopes in the following ranges: 15% to 25%, 25% and greater.
The location of these slopes shall be graphically depicted by category
on the plan. Slope shall be measured over three or more two-foot contour
intervals.
(c)
Areas within the floodway, flood fringe, and approximated floodplain.
(d)
Watercourses, either continuous or intermittent and named or
unnamed, and lakes, ponds or other water features as depicted on the
USGS Quadrangle Map, most current edition.
(e)
Wetlands and wetland margins.
(f)
Riparian buffers.
(g)
Soil types and their boundaries, as mapped by the USDA Natural
Resource Conservation Service, including a table listing the soil
characteristics pertaining to suitability for construction and, in
unsewered areas, for septic suitability. Alluvial and hydric soils
shall specifically be depicted on the plan.
(h)
Existing vegetation, denoted by type, including woodlands, hedgerows,
tree masses, tree lines, individual freestanding trees over six inches
DBH, wetland vegetation, pasture or croplands, orchards, permanent
grass land, old fields, and any other notable vegetative features
on the site. Vegetative types shall be described by plant community,
relative age, and condition.
(3)
Existing man-made features, including:
(a)
Location, dimensions, and use of existing buildings and driveways.
(b)
Location, names, widths, center line courses, paving widths,
identification numbers, and rights-of-way, of existing streets and
alleys.
(c)
Location of trails that have been in public use (pedestrian,
equestrian, bicycle, etc.).
(d)
Location and size of existing sanitary sewage facilities.
(e)
Location and size of drainage facilities.
(f)
Location of water supply facilities, including wellhead protection
areas.
(g)
Any easements, deed restrictions, rights-of-way, or any other
encumbrances upon the land, including location, size, and ownership.
(h)
Site features or conditions such as hazardous waste, dumps,
underground tanks, active and abandoned wells, quarries, landfills,
sandmounds, and artificial land conditions.
(4)
Total acreage of the tract, the adjusted tract area, where applicable,
and the constrained land area with detailed supporting calculations.
C.
Consultation meeting (optional). Prior to any stormwater management
permit application submission, the landowner or developer shall meet
with the municipality for a consultation meeting on a concept plan
for the post-development stormwater management system to be utilized
in the proposed project. This consultation meeting shall take place
at the time of the preliminary plan or other early step in the development
process. The purpose of this meeting is to discuss the post-development
stormwater management measures necessary for the proposed project,
as well as to discuss and assess constraints, opportunities and potential
ideas for stormwater management designs before the formal site design
engineering is commenced.
