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Township of Springfield, PA
Mercer County
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A. 
This section applies to eligible projects with total impervious surface area from 1,000 square feet to less than 5,000 square feet.
B. 
If the total impervious surface area is 2,500 square feet to 5,000 square feet, your project requires a small project application to be submitted to Springfield Township and volume controls must be installed to meet the requirements of the surface area of BMPs required.
C. 
For areas where runoff from impervious areas can be directed to pervious areas that allow for infiltration, filtration, and increased time of concentration disconnected impervious area (DIA) credits may be used. To qualify as DIA, the concentrated discharge must meet the following criteria:
(1) 
For rooftop areas:
(a) 
Area draining to a downspout must be 500 square feet or less;
(b) 
Discharge must be to an area with a positive slope of 5% (one foot of fall per 20 feet of length, 20:1) or less; and
(c) 
Be a minimum distance of 75 feet from a watercourse or downslope property line.
(2) 
For paved areas (driveways):
(a) 
Runoff draining to a point must be 1,000 square feet or less;
(b) 
Discharge must be to a gravel strip or spreading device; and
(c) 
The flow length of the pervious surface must be greater than or equal to the contributing length.
The following items shall be included in the SWM site plan:
A. 
Appropriate sections from Chapter 370, Subdivision and Land Development, and other applicable local ordinances shall be followed in preparing the SWM site plans. In instances where Springfield Township lacks subdivision and land development regulations, the content of SWM site plans shall follow the county's subdivision and land development ordinance.
B. 
The developer shall not receive approval of any SWM site plan that is deficient in meeting the requirements of this chapter. When a SWM site plan is found to be deficient, Springfield Township, at its sole discretion and in accordance with this article, may either disapprove the submission, require a resubmission, or in the case of minor deficiencies, Springfield Township may accept submission of modifications.
C. 
Provisions for permanent access or maintenance easements for all physical SWM BMPs, such as ponds and infiltration structures, as necessary to implement the operation and maintenance procedures discussed in Subsection E(14) below.
D. 
The following signature block for Springfield Township:
"The Stormwater Management Site Plan shown hereon complies with all design standards and criteria of Springfield Township Stormwater Management Ordinance No. __________."
Date
Signature
E. 
The SWM site plan shall be black and white and provide the following information, at a minimum:
(1) 
Proposed name or identifying title of the project.
(2) 
Name and address of the landowner and/or developer of the project.
(3) 
Plan date, date of the latest revision, North arrow, graphic and written scale.
(4) 
Project location map overlaid on the title sheet showing the project and the nearest intersecting street.
(5) 
Tract boundaries showing bearings, distances, and curve data.
(6) 
Existing and proposed contours at a vertical interval of one foot, unless steeper slopes do not permit the visual representation at this scale.
(7) 
Existing and proposed natural and/or artificial objects thereon.
(8) 
Existing subsurface objects as required by Pa One Call, as well as proposed subsurface objects.
(9) 
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, and other environmentally sensitive areas, such as brownfields.
(10) 
A report containing stormwater runoff design calculations, assumptions, criteria, methodology and documentation used in the design to demonstrate that the maximum practicable measures have been taken to meet the requirements of this chapter, including the recommendations and general requirements in § 358-11, General requirements.
(11) 
A soil erosion and sediment control plan, where applicable, as prepared for and submitted to the approval authority.
(12) 
Plan and profile drawings of all SWM BMPs, including drainage structures and pipes.
(13) 
A plan showing the locations of existing and proposed on-lot wastewater facilities and water supply wells.
(14) 
Operation and maintenance procedures for all existing and proposed physical stormwater management facilities that shall address long-term ownership and responsibilities for O&M.
A. 
Five copies of the SWM site plan shall be submitted as follows:
(1) 
Three copy(s) to the municipality.
(2) 
One copy(s) to the Municipal Engineer (when applicable).
(3) 
One copy(s) to the County Conservation District (when applicable).
B. 
Additional copies shall be submitted as requested by Springfield Township or other regulatory authorities.
A. 
The SWM site plan shall be reviewed by a qualified professional for Springfield Township for consistency with the provisions of this chapter. After review, the qualified professional shall provide a written recommendation to Springfield Township to approve or disapprove the SWM site plan. If it is recommended to disapprove the SWM site plan, the qualified professional shall state the reasons for the disapproval in writing. The qualified professional also may recommend approval of the SWM site plan with conditions and, if so, shall provide the acceptable conditions for approval in writing. The SWM site plan review and recommendations shall be completed within the time allowed by the Municipalities Planning Code[1] for reviewing subdivision plans.
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
B. 
Springfield Township shall notify the applicant, in writing, within 30 days whether the SWM site plan is approved or disapproved. If the SWM site plan involves a subdivision and land development plan, the notification period is 60 days. If a longer notification period is provided by other statute, regulation, or ordinance, the applicant will be notified by Springfield Township. If Springfield Township disapproves the SWM site plan, the municipality shall cite the reasons for disapproval in writing.
A modification to a submitted SWM site plan that involves a change in SWM BMPs or techniques, or that involves the relocation or redesign of SWM BMPs, or that is necessary because Springfield Township has determined that other conditions are not as stated on the SWM site plan, then Springfield Township shall require a resubmission of the modified SWM site plan in accordance with this article.
A disapproved SWM site plan may be resubmitted, with the revisions addressing Springfield Township's concerns, to Springfield Township in accordance with this article. The applicable review fee must accompany a resubmission of a disapproved SWM site plan.
Springfield Township's approval of an SWM site 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. Springfield Township may specify a term of validity shorter than five years in the approval for any specific SWM site plan. Terms of validity shall commence on the date Springfield Township signs the approval for a SWM site plan. If an approved SWM site plan is not completed according to § 358-23, As-built plans, completion certificate, and final inspection, within the term of validity, then Springfield Township may consider the SWM site plan disapproved and may revoke any and all permits. SWM site plans that are considered disapproved by Springfield Township shall be resubmitted in accordance with § 358-21, Resubmission of disapproved SWM site plans, of this chapter.
A. 
The developer shall be responsible for providing as-built plans of all SWM BMPs, including in the approved SWM site plan. The as-built plans and an explanation of any discrepancies with the construction plans shall be submitted to Springfield Township.
B. 
The as-built submission shall include a certification of completion signed by a qualified professional verifying that all permanent SWM BMPs have been constructed according to the approved plans and specifications.
C. 
After receipt of the completion certification by Springfield Township, Springfield Township may conduct a final inspection.