For example:
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If a property owner proposes a one-hundred-fifty-square-foot
shed after adoption of the Municipal Stormwater Management Ordinance,
that property owner would be exempted from water quality and quantity
requirements of this chapter as noted in Table 106.1 of this chapter.
If, at a later date, the property owner proposes to construct a four-hundred-ninety-nine-square-foot
room addition, the applicant would be required to comply with the
requirements for the Simplified Method for the full 649 square feet
of impervious cover created since adoption of this chapter. If an
additional seven-hundred-square-foot swimming pool/patio is proposed
later, the property owner would be required to implement the full
stormwater quantity and quality control submission requirements of
this chapter for the total 1,349 square feet of additional impervious
surface added to the original property since adoption of this chapter.
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Table 106.1
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---|---|---|---|---|---|---|---|---|
Ordinance Exemptions
| ||||||||
Proposed Impervious Surface
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Earth Disturbance
| |||||||
Ordinance Article or Section
|
Type of Project
|
0-499 Square Feet
|
500-999 Square Feet
|
1,000+ Square Feet
|
0-4,999
Square Feet of disturbance
|
5,000 Square Feet
to < 1 Acre
|
> 1 Acre
| |
Article IV, SWM Site Plan Requirements
|
Development; redevelopment
|
Exempt
|
Not exempt; Simplified Approach
|
Not exempt
|
Exempt
|
Modified1
|
Not exempt
| |
§ 384-15, Nonstructural project design
|
Development; redevelopment
|
Exempt
|
Not exempt; Simplified Approach
|
Not exempt
|
Exempt
|
Not exempt
|
Not exempt
| |
§ 384-16, Infiltration volume requirements
|
Development; redevelopment
|
Exempt
|
Not exempt; Simplified Approach
|
Not exempt
|
Exempt
|
Exempt
|
Not exempt
| |
§ 384-17, Water quality requirements
|
Development; redevelopment
|
Exempt
|
Not exempt; Simplified Approach
|
Not exempt
|
Modified2
|
Modified2
|
Not exempt
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§ 384-18, Stream bank erosion requirements
|
Development; redevelopment
|
Exempt
|
Not exempt; Simplified Approach
|
Not exempt
|
Exempt
|
Exempt
|
Not exempt
| |
§ 384-19, Stormwater peak rate control and management districts
|
Development; redevelopment
|
Exempt
|
Exempt
|
Not exempt
|
Exempt
|
Not exempt
|
Not exempt
| |
Erosion and sediment pollution control requirements
|
Must comply with Title 25, Chapter 102, of the Pa.
Code and other applicable state and municipal codes, including the
Clean Streams Law
|
Not exempt
|
Legend:
| ||
•
|
"Proposed Impervious Surface" in Table 106.1 includes new or
additional impervious surface/cover as part of development or redevelopment.
| |
•
|
Exempt - Exempt from required section provision only; SWM site
plan submission may still be required if other section provisions
are applicable.
| |
•
|
Modified1 - Modified SWM site plan need only consist of items in §§ 334-23B(1)(b) and (d); 334-23B(2)(g), (h), (l) and (w); and 334-23B(4)(a) and (c) and related supportive material needed to determine compliance with §§ 384-15 and 384-19. Modified SWM site plan is required that includes all elements of § 384-15, as applicable.
| |
•
|
Modified2 - Modified SWM site plan need only consist of items and related material needed to determine compliance with § 384-17E.
| |
•
|
Simplified Approach - Must comply with provisions of Appendix
B of this chapter.[1]
| |
•
|
Redevelopment - See § 334-19I for alternate stormwater
peak rate control criteria.
|