No final subdivision/land development plan shall be approved, no permit authorizing construction shall be issued, nor an earth moving or land disturbance activity initiated, until the final stormwater management plan for the site is approved in accordance with the provisions of this chapter.
The following activities are specifically exempt from the plan preparation provisions of this chapter unless the municipality determines that the activity is likely to, has, or will negatively impact the purposes and objectives set forth in Article I. For example, where an activity occurs on very steep terrain or where an activity is the latest in a series of incremental developments expected to cause pronounced stormwater impacts, it may be that these activities will be required to comply with the plan preparation requirements contained herein even though their activities qualify under the listing in this section. Upon making such determination, the municipality shall give notice in writing to the landowner and the developer, if known, and direct the landowner and any developer to immediately cease and desist all activity and affirmatively comply with the formal plan, submission, and approval procedures of this chapter. Exemption shall not relieve the applicant from providing adequate stormwater management to meet the purpose of this chapter.
A. 
Any regulated activity that would create 10,000 square feet or less of impervious area. This criteria shall apply to the total development even if development is to take place in phases. Impervious cover shall include, but not be limited to, any roof, parking or driveway areas and any new streets and sidewalks. Any areas designed to initially be gravel or crushed stone shall be assumed to be impervious for the purposes of this exemption criteria.
B. 
Use of land for gardening for home consumption.
C. 
Agriculture, when operated in accordance with a conservation plan or erosion and sedimentation control plan prepared by the County Conservation District. The agricultural activities such as growing crops, rotating crops, filling of soil and grazing animals and other such activities are specifically exempt from complying with the requirements of this chapter when such activities are conducted in accordance with a conservation plan prepared by the County Conservation District. The construction of buildings, parking lots or any activity that may result in impervious surface which increases the rate and volume of stormwater runoff shall comply with the requirements of this chapter.
D. 
Forest management operations which are following the Department of Environmental Protection's management practices contained in its publication "Soil Erosion and Sedimentation Control Guidelines for Forestry" and are operating under an erosion and sedimentation control plan.
A. 
General format. The stormwater plan shall be drawn to a scale of not less than one inch equals 200 feet. All sheets shall contain a title block with the name and address of the applicant and engineer or surveyor, scale, Morth arrow, legend and date of preparation.
B. 
Existing and proposed features. The plan shall show the following under both predevelopment and post-development conditions:
(1) 
Watershed location. Provide a key map showing the location of the development site within the watershed(s) and watershed subarea(s). On all site drawings, show the boundaries of the watershed(s) and subarea(s) as they are located on the development site and identify watershed name(s) and subarea number(s).
(2) 
Floodplain boundaries. Identify one-hundred-year floodplains on the development site (as appropriate) based on the municipal Flood Insurance Study maps.
(3) 
Natural features. Show all bodies of water (natural or artificial), watercourses (permanent and intermittent), swales, wetlands and other natural drainage courses on the development site, or which will be affected by runoff from the development.
(4) 
Soils. Provide an overlay showing soil types and boundaries within the development site (consult county, SCS and U.S. Geological Survey for information).
(5) 
Contours. Show existing and final contours at intervals of two feet; in areas with slopes greater than 15%, five-foot contour intervals may be used.
(6) 
Land cover. Show existing and final land cover classifications as necessary to support and illustrate the runoff calculations performed.
(7) 
Drainage area delineations. Show the boundaries of the drainage areas employed in the runoff calculations performed.
(8) 
Stormwater management controls. Show any existing stormwater management or drainage controls and/or structures, such as storm sewers, swales, culverts, etc. which are located on the development site, or which are located off-site but will be affected by runoff from the development.
C. 
Professional certification. The principal in charge of preparing the stormwater management plan (including all calculations) shall be a registered professional engineer or registered land surveyor, and the stormwater management plan shall be sealed by a registered professional engineer or professional land surveyor with training and exercise in hydrology and hydraulics. Documentation of qualifications may be required by the municipality.
D. 
Runoff calculations. Calculations for determining pre- and post-development discharge rates and for designing proposed stormwater control facilities must be submitted with the stormwater management plan. All calculations shall be prepared using the methods and data prescribed by Article III of this chapter.
E. 
Stormwater controls. All proposed stormwater runoff control measures must be shown on the plan, including methods for collecting, conveying and storing stormwater runoff on site, which are to be used both during and after construction. Erosion and sedimentation controls shall be shown in accordance with Article V of this chapter. The plan shall provide information on the exact type, location, sizing, design and construction of all proposed facilities and their relationship to the existing watershed drainage system. The plan shall include technical specifications for materials and methods to be used in the construction of the stormwater management facilities.
(1) 
If the development is to be constructed in stages, the applicant must demonstrate that stormwater facilities will be installed to manage stormwater runoff safely during each stage of development.
(2) 
A schedule for the installation of all temporary and permanent stormwater control measures and devices shall be submitted.
(3) 
If appropriate, a justification should be submitted as to why any preferred stormwater management techniques, as listed in Article IV of this chapter, are not proposed for use.
F. 
Easements. Right-of-ways deed restrictions: All existing and proposed easements and rights-or-way for drainage and/or access to stormwater control facilities shall be shown along with any areas subject to special deed restrictions relative to or affecting stormwater management on the development site.
G. 
Other permits/approvals. A list of any approvals/permits relative to stormwater management that will be required from other governmental agencies (Pennsylvania DEP Chapter 105 and 106 permits and/or NPDES permit) and anticipated dates of submission/receipt should be included with the stormwater plan submission. Copies of permit applications may be requested by the municipality where they may be helpful for the plan review.
H. 
Maintenance program. The proposed maintenance plan for all stormwater control facilities shall:
(1) 
Identify the proposed ownership entity (e.g., municipality, property owner, private corporation, homeowners' association, or other entity).
(2) 
Identify the type of maintenance, probable frequencies, personnel and equipment requirements; and estimated annual maintenance costs.
(3) 
Identify the method for financing the continuing operation and maintenance of the facility if the facility is to be owned by other than a governmental agency.
(4) 
Include copies of any legal agreements required to implement the maintenance program and, if applicable, copies of the maintenance agreement as required Article VI of this chapter.
I. 
Financial guarantees. Submit financial guarantees in accordance with the provisions of Article X of this chapter.
J. 
Evidence of notification of downstream municipality. The developer shall notify (by certified mail) the municipality immediately downstream of the municipality within which the development is proposed that a stormwater control plan has been prepared and submitted. This letter should identify the location of the proposed development site and the name of the affected stream. The developer shall submit a copy of this letter and a copy of the certified mail return receipt.