A.
When a property owner or developer proposes a regulated activity, said property owner or developer shall submit a SWM site plan to demonstrate compliance with the stormwater management provisions of this chapter. Said submission shall be required by Abbottstown Borough unless said regulated activity is exempted from SWM site plan submission in accordance with the exemption criteria and exemption approval process established in § 180-15 of this chapter. Where Abbottstown Borough determines that the property owner or developer proposing the regulated activity is eligible to employ the process established in the Simplified Approach (see Appendix D[1]) to address the stormwater management needs of a site,
the submission of the required documentation from said Manual shall
substitute for the SWM site plan requirements of this article.
[1]
Editor's Note: Said appendix is on file in the Borough offices.
B.
C.
Additional copies shall be submitted as requested by Abbottstown
Borough.
A.
Site plan requirements. The SWM site plan shall include the following
information. Where the regulated activity for which a SWM site plan
is being submitted is also subject to subdivision and/or land development
plan review in accordance with the Abbottstown Borough Subdivision
and Land Development Ordinance,[1] the SWM site plan shall be submitted as a component of
the subdivision or land development plan submission for the project
and shall include the following information. Where the submission
requirements of this section conflict with the submission requirements
of the Abbottstown Borough Subdivision and Land Development Ordinance,
the submission requirements of this chapter shall control. The plan
sheets shall be titled "Post Construction Stormwater Management or
PCSM."
(1)
The name of the development, the name and address of the owner of
the property, and the name and address of the individual or firm preparing
the SWM site plan. Also to be included are the name, address, signature
and seal of any registered surveyor (attesting the accuracy of the
boundary survey), professional engineer, landscape architect, or professional
geologist (for geomorphological assessments) contributing to and/or
responsible for any aspect of the SWM site plan.
(2)
The overall stormwater management concept for the project including
any additional information required for a PCSM Plan as applicable
(all items required per NPDES Permit Checklist).
(3)
A summary table listing existing and proposed discharge points' identification,
acreage, storm event frequency, and runoff flows/discharges.
(4)
A determination of site conditions (existing and proposed) in accordance
with the site assessment procedures outlined in Chapter 4 of the most
current version of the Pennsylvania Stormwater Best Management Practices
Manual. A site assessment shall be completed for projects proposed
in areas of carbonate geology or karst topography.
(5)
Drainage area maps with outlines of existing and proposed drainage
areas and subareas and the paths for calculating the times of concentration.
Where offsite and/or site area outside of the regulated activity area
flows are considered in calculations, drainage areas for conditions
as described shall be denoted in a manner such that pre to post conditions
for the regulated activity area (not including offsite and/or areas
outside of the regulated activity area) may be compared.
(6)
For drainage models where multiple drainage areas or sub areas are
considered, a dynamic or interconnected model shall be prepared.
(7)
A graphic and written plan scale of one inch equals no more than
50 feet. For parcels of 20 acres or more, the scale shall be one inch
equals no more than 100 feet.
(8)
North point (arrow).
(9)
Existing and proposed property boundaries. In the case of a land
development plan on a large tract, the property boundary does not
need to be shown in entirety at the full drawing scale. The entire
tract is required to be shown in the site location map.
(10)
Project location map at a minimum of one inch equals 2,000 feet
showing the project site property line, limits of development, streets,
street names, and bodies of water within 2,000 feet of the property
boundary.
(11)
Existing and proposed land use within the parcel plus existing
land use on the first 25 feet of parcels surrounding the subject parcel.
(12)
The location of existing and proposed utilities, stormwater
facilities, sanitary sewers, water lines, wells, on-lot wastewater
facilities and all easements within the parcel plus the location of
said features on the first 25 feet of parcels surrounding the subject
parcel.
(13)
Significant physical features and associated boundary limits,
including flood hazard areas, sinkholes, existing drainage courses,
and areas of natural vegetation.
(14)
Existing and proposed structures, buildings, streets, driveways,
access drives, and parking areas.
(15)
The location of the parcel relative to streets, municipal boundaries,
and other significant manmade features within 25 feet of the parcel.
(16)
A determination of site conditions in accordance with the BMP
Manual. A detailed site evaluation shall be completed for projects
proposed in areas of carbonate geology or karst topography, as well
as for other environmentally sensitive areas, whether natural or manmade,
including floodplains, streams, lakes, ponds, hydric soils, wetlands,
brownfields, and wellhead protection zones.
(17)
Stormwater runoff design computations and documentation as specified
in this chapter, or as otherwise necessary, to demonstrate compliance
with the requirements of this chapter.
(18)
A hydro geologic assessment of the effects of stormwater runoff
on sinkholes, where present.
(19)
A description of permanent stormwater management techniques,
including the construction specifications of the materials to be used
for stormwater management facilities.
(20)
Plan and profile (horizontal and vertical as required) drawings
of all stormwater BMPs, including drainage structures, pipes, open
channels, and swales, etc.
(21)
Proposed changes to the land surface and vegetative cover and
the type and amount of existing and proposed impervious area. Provide
a drawing legend of unidentified or existing and proposed features.
(22)
Existing and final contours at minimum intervals of two feet.
In areas of slopes in excess of 15%, five-foot contour intervals may
be used.
(23)
Provide drainage flow pathways and defined drainage areas on
the construction plan.
(24)
Clearly shown existing and proposed drainage patterns, existing
and proposed elevation contours at intervals of at least one foot
for plans at scale of one inch equal to 10 or 20 feet, at least two
feet for all other scales. Where land is sloped more than 20%, contour
intervals may be every five feet. Show spot elevations at high points
and low points and critical areas which cannot be interpolated between
contours. Indicate the location and elevation of the benchmark. Provide
the date the existing topography was surveyed and the method of survey
(aerial or field).
(25)
A map showing all existing manmade features beyond the subject
parcel's boundary lines that may be affected by the proposed regulated
activities.
(26)
Expected project time schedule.
(27)
An E&S plan, where applicable, as approved by the Adams
County Conservation District or DEP. Indicate limits of phases and
include a narrative of the construction sequence.
(28)
An NPDES permit application, including all PCSM requirements,
where applicable, as administratively reviewed and approved by the
Adams County Conservation District.
(29)
Outline of soil type limits and list soil types as shown in
the Soil Survey of Adams County. Provide a table listing the following
information for the applicable on-site soil types:
(a)
Soil map symbol (soil name abbreviation);
(b)
Soil name, applicable building site restrictions (Soil Survey
Table 7);
(c)
Applicable sanitary facilities restrictions (Soil Survey Table
8);
(d)
Applicable construction materials restrictions (Soil Survey
Table 9);
(e)
Applicable water management restrictions (Soil Survey Table
10); and
(f)
Hydrologic soil group, flooding and high water table information
(Soil Survey Table 15).
(30)
Construction details, sections, and specifications of facilities
with sufficient information and dimensions so that they can be built
to meet the requirements of this chapter. Provide a note which states
that the materials and details specified shall not be altered during
construction without written approval by the municipality.
(31)
The SWM site plan shall include an O&M Plan for all existing
and proposed physical stormwater management facilities.
(32)
Provisions for permanent access or maintenance easements for
all physical stormwater BMPs, as necessary to implement the O&M
Plan.
(33)
A note on the SWM site plan indicating the location and responsibility
for maintenance of stormwater BMPs and/or easements that would be
located on adjoining properties as a result of proposed regulated
activities.
(34)
The following signature block shall be provided: (Municipal
official or designee), on this date (date of signature), has reviewed
and hereby certifies that the SWM site plan meets all design standards
and criteria of the Abbottstown Borough Stormwater Management Ordinance,
Ordinance No. (number assigned to the ordinance).
B.
Design narrative content.
(1)
The stormwater management design narrative shall contain the following:
An introductory section describing the existing site and drainage
area features, the existing points of discharge from the site, proposed
site improvements, description of major drainage improvements and
how they impact downstream areas. Identify any unusual existing conditions
at the site that affect the existing stormwater drainage. Provide
a statement of who visited the site and the date or dates of the site
visit of both on-site and downstream facilities.
(2)
A summary table listing existing and proposed discharge points' identification,
acreage, storm event frequency, and runoff flows/discharges.
(3)
Drainage area maps with outlines of existing and proposed drainage
areas and subareas and the paths for calculating the times of concentration
(alternate is to show this information in the plan).
(4)
Existing and proposed stormwater detailed calculations of runoff,
facility designs, and erosion and sedimentation control designs. Hydrologic
and hydraulic calculations of all existing and proposed infrastructure
and improvements.
(6)
The design narrative shall be signed and sealed by a registered professional
engineer, surveyor, landscapre architect, or professional geologist
qualified to perform such duties.
A.
Pre-application meeting. Prior to proceeding with SWM site plan preparation
and submission, the applicant is encouraged to request a pre-application
meeting with Abbottstown Borough to discuss the plan concept and responsibility
for submission of required documents and information. If the project
requires an E&S plan or an NPDES permit, the applicant is encouraged
to meet with a staff member of the Adams County Conservation District
as well.
B.
SWM site plan review and approval procedure:
(1)
If a SWM site plan is not submitted as a component of a subdivision
and/or land development plan, the review of the SWM site plan, recommendations,
approval, approval with conditions, or disapproval shall occur within
45 calendar days of submission to Abbottstown Borough. Where the applicant
submits revisions to a previously submitted SWM site plan, either
because the applicant has elected to revise the SWM site plan or as
a result of a determination by Abbottstown Borough that a revision
is necessary to meet the requirements of this chapter, this forty-five-day
period shall be restarted. Should Abbottstown Borough fail to render
a decision on the SWM site plan within this forty-five-day time period,
the application shall be deemed approved. The review process shall
include the following components.
(a)
Upon receipt, the official accepting the SWM site plan shall forward a copy of the plan to the entities referenced in § 180-26B. The official accepting the SWM site plan shall also cause the application to be included on the agenda for the next available meeting of the Abbottstown Borough Planning Commission.
(b)
The Abbottstown Borough engineer shall review the SWM site plan
for compliance with the requirements of this chapter and shall communicate
his review to the Abbottstown Borough Planning Commission and the
Abbottstown Borough Council.
(c)
The Abbottstown Borough Planning Commission shall review the
application and the review of the Abbottstown Borough Engineer at
its next available meeting. The Planning Commission shall provide
a recommendation regarding the SWM site plan in writing to the Abbottstown
Borough Council.
(d)
The Abbottstown Borough Council shall consider the SWM site
plan, the Abbottstown Borough Engineer's review, and the recommendation
of the Abbottstown Borough Planning Commission at its next available
meeting. Following review of this information, the Abbottstown Borough
Council shall approve, approve with conditions, or disapprove the
SWM site plan.
(e)
Decision notification procedure. In all cases, the decision
of the Abbottstown Borough Council to approve, approve with conditions,
or disapprove the SWM site plan shall be in writing and shall be delivered
to the applicant no later than 15 days following the decision. If
the SWM site plan is disapproved, the written decision by the Abbottstown
Borough Council shall specify the defects in the application, describe
the requirements which were not met, and shall cite the provisions
of the Ordinance relied upon. If the SWM site plan is approved with
conditions, the notification to the applicant shall state the acceptable
conditions for approval and the timeline limit for satisfying such
conditions.
(2)
If a SWM site plan is submitted as a component of a subdivision and/or
land development plan, the SWM site plan shall be reviewed in accordance
with the review process and time frame established in the Abbottstown
Borough Subdivision and Land Development Ordinance[1] and in accordance with Section 508 of the Pennsylvania
Municipalities Planning Code.
(3)
NPDES permit technical coordination: Where the project for which
a SWM site plan is submitted is subject to NPDES permitting, Abbottstown
Borough shall notify the Adams County Conservation District when the
applicant has achieved technical compliance with the requirements
of this chapter. Abbottstown Borough may address this requirement
through the completion of the technical review checklist for NPDES
sites or comparable process as determined by Abbottstown Borough.
Upon receipt of this notification, the Adams County Conservation District
will acknowledge a general NPDES permit. In the case of an individual
NPDES permit, the Adams County Conservation District will coordinate
municipal reviews with the DEP Regional Office.
(4)
NPDES permits and E&S plans. Where the project for which a SWM
site plan is submitted is subject to NPDES permitting or the submission
of an E&S Plan, or both, any final approval of the SWM site plan
by Abbottstown Borough shall be conditioned on the applicant's receipt
of the required NPDES permit or E&S plan approval, as appropriate.
(5)
Decision notification procedure. In all cases, the decision of the
Abbottstown Borough Council to approve, approve with conditions, or
disapprove the SWM site plan shall be in writing and shall be delivered
to the applicant no later than 15 calendar days following the decision.
If the SWM site plan is disapproved, the written decision by the Abbottstown
Borough Council shall specify the defects in the application, describe
the requirements which were not met, and shall cite the provisions
of the Ordinance relied upon. If the SWM site plan is approved with
conditions, the notification to the applicant shall state the acceptable
conditions for approval and the time limit for satisfying such conditions.
Should Abbottstown Borough fail to notify the applicant of the decision
within this fifteen-calendar-day period, the application shall be
deemed approved.
C.
Waiver requests:
(1)
If a SWM site plan is not submitted as a component of a subdivision
and/or land development plan, the Abbottstown Borough Council may
accept a request for waiver of one or more of the requirements of
this chapter. Any such waiver requests shall comply with the following
requirements.
(a)
The Abbottstown Borough Council may accept a request for waiver
of the requirements of one or more provisions of this chapter if the
literal enforcement will enact undue hardship because of peculiar
conditions pertaining to the land in question, provided that the Abbottstown
Borough Council determines that such waiver will not be contrary to
the public interest and that the purpose and intent of the Ordinance
is observed.
(b)
All requests for waivers from an applicant shall be in writing
and shall accompany and be a part of the application for approval
of a SWM site plan. The request shall state in full the grounds and
facts of unreasonableness or hardship on which the request is based,
the provision or provisions of the Ordinance involved, and the minimum
waiver necessary to afford relief.
(c)
The Abbottstown Borough Council shall act to accept or reject requests for waivers within the context of its SWM site plan decision-making process established in § 180-28B(1) of this chapter. The decision of the Abbottstown Borough Council regarding acceptance of each request for waiver shall be incorporated into the written decision of the Abbottstown Borough Council for the overall SWM site plan as required in § 180-28B(3) of this chapter. The Abbottstown Borough Council shall keep a written record of all action on requests for waivers.
(2)
If a SWM site plan is submitted as a component of a subdivision and
land development plan, requests for waiver to obtain relief from one
or more of the requirements of this chapter shall be handled in accordance
with the modification process established in the Abbottstown Borough
Subdivision and Land Development Ordinance[2] and Section 512.1 of the Pennsylvania Municipalities Planning
Code.
A.
SWM site plan not submitted as a component of a subdivision and/or
land development plan: Revisions to a previously approved SWM site
plan to incorporate a change in stormwater BMPs or techniques, or
the relocation or redesign of stormwater BMPs, or different information
about soil or other conditions from what was stated in the SWM site
plan, shall be submitted by the applicant to Abbottstown Borough.
Abbottstown Borough, at its sole discretion, may require a resubmission
of the revised SWM site plan in accordance with this chapter, including
applicable review fee. For NPDES permitted sites, any revised SWM
site plan shall be resubmitted to the Adams County Conservation District
for its review. In the case of a SWM site plan which contains minor
deficiencies (such as a missing label, omission of a required note
or minor construction detail), Abbottstown Borough may, at its sole
discretion, accept a resubmission of such SWM site plan without the
requirement of a full review fee, or a lesser fee, as determined by
Abbottstown Borough.
B.
SWM site plan submitted as a component of a subdivision and/or land
development plan: A revision of an SWM site plan approved as a component
of a subdivision and/or land development plan shall be treated as
a revision of the subdivision and/or land development plan and shall
be subject to the review process established in the Abbottstown Borough
Subdivision and Land Development Ordinance.[1]
A.
SWM site plan not submitted as a component of a subdivision and/or land development plan: A previously disapproved SWM site plan may be resubmitted with the revisions addressing the defects of the original submission as listed in Abbottstown Borough's decision notification provided in accordance with § 180-28B(1)(e). The resubmitted SWM site plan shall be reviewed and acted upon in accordance with § 180-28B(1) of this chapter. The applicable review fee must accompany the submission of a revised SWM site plan, unless such fee is waived by Abbottstown Borough.
B.
SWM site plan submitted as a component of a subdivision and/or land
development plan: The resubmission of the SWM site plan originally
submitted as a component of a subdivision and/or land development
plan shall be treated as resubmission of said subdivision and/or land
development plan and shall be subject to the review process established
in the Abbottstown Borough Subdivision and Land Development Ordinance.[1]
A.
SWM site plans not submitted as a component of a subdivision and/or land development plan: Abbottstown Borough approval of a SWM site plan, when such plan is not submitted as a component of a subdivision and/or land development plan, authorizes the regulated activities contained in the SWM site plan for a maximum term of validity of five years following the date of approval. Abbottstown Borough may specify a term of validity shorter than five years in the decision notification for any specific SWM site plan, particularly if the nature of the proposed SWM facilities requires more frequent maintenance and/or short-term replacement of certain components. Terms of validity shall commence on the date Abbottstown Borough signs the decision notification for an SWM site plan. If an approved SWM site plan is not completed according to § 180-32 within the term of validity, and if a request to extend the permit has not been submitted to Abbottstown Borough by the applicant, the permit terminates and Abbottstown Borough may revoke any and all permits applicable to the project. SWM site plans for projects with expired permits may be resubmitted in accordance with § 180-30 of this chapter.
B.
SWM site plans submitted as a component of a subdivision and/or land
development plan: Abbottstown Borough approval of a SWM site plan
submitted as a component of a subdivision and/or land development
plan is subject to the term of validity as specified in the Abbottstown
Borough Subdivision and Land Development Ordinance.[1]
A.
The stormwater management facilities constructed in accordance with
a SWM site plan not submitted as a component of a subdivision and/or
land development plan shall be subject to the following process upon
the completion of construction of said facilities.
(1)
Abbottstown Borough may, at its discretion, inspect stormwater management
facilities that do not require an NPDES permit at any time during
the construction process to ensure compliance with the approved SWM
site plan.
(2)
The property owner or developer shall contact Abbottstown Borough
within seven days of the completion of the construction process to
schedule a final inspection. The final inspection shall be conducted
by the Abbottstown Borough engineers and/or other official as designated
by the Borough Council.
(3)
Abbottstown Borough may inspect the completed improvements to confirm
consistency with the approved SWM site plan. Following the inspection,
Abbottstown Borough may take one of the following two actions.
(a)
Issue a completion certificate: A completion certificate may
be issued when Abbottstown Borough determines that the stormwater
management facilities have been constructed in conformance with the
approved SWM site plan.
(b)
Issue correspondence regarding discrepancies: If Abbottstown
Borough determines that the stormwater management facilities have
not been constructed in accordance with the approved SWM site plan,
Abbottstown Borough shall issue correspondence addressed to the property
owner or developer summarizing the discrepancies from the approved
SWM site plan. Such correspondence does not by itself constitute an
extension of any applicable SWM permit.
(4)
Upon receipt of correspondence summarizing discrepancies in the constructed
stormwater facilities, the property owner or developer shall apply
for permit extensions when necessary, and take one of the following
two actions.
(a)
Reconstruct the required stormwater management facilities in a manner that complies with the approved SWM site plan. Upon completion of the reconstruction work, the property owner or developer shall contact Abbottstown Borough for a subsequent final inspection in accordance with the process established in § 180-32A(2).
(b)
Submit a revised SWM site plan in accordance with the process established in § 180-29A. The revised SWM site plan shall be consistent with the improvements as constructed. Upon receipt, Abbottstown Borough may review the revised SWM site plan in accordance with the review and approval process of § 180-28. If the revised SWM site plan is approved, Abbottstown Borough shall issue the completion certificate. If the revised SWM site plan fails to demonstrate that the constructed stormwater management facilities can comply with the requirements of this chapter, Abbottstown Borough may then require the property owner or developer to reconstruct the required stormwater facilities in accordance with the originally approved SWM site plan.
(5)
Within 15 days of the completion certificate, the property owner
or developer shall submit to Abbottstown Borough an as-built plan
depicting the stormwater management facilities as constructed. If
requested by the applicant, Abbottstown Borough may grant an extension
of the deadline to submit as-built plans.
B.
The stormwater management facilities constructed in accordance with
a SWM site plan submitted as a component of a subdivision and/or land
development plan shall be subject to the completion of improvements
requirements of the Abbottstown Borough Subdivision and Land Development
Ordinance and Sections 509 through 511 of the Pennsylvania Municipalities
Planning Code.
