Tables: Meeting the Green Infrastructure Requirement (N.J.A.C. 7:8-5.3)
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1. Table 1
Meeting the Green Infrastructure Requirement (N.J.A.C. 7:8-5.3), PDF p. 1
| Best Management Practice |
Maximum Contributory Drainage Area |
| 1. Dry Well |
1 acre |
| 2. Manufactured Treatment Device |
2.5 acres |
| 3. Pervious Paving Systems |
Area of additional inflow cannot exceed three times the area occupied by the BMP |
| 4. Small-scale Bioretention Systems |
2.5 acres |
| 5. Small-scale Infiltration Basin |
2.5 acres |
| 6. Small-scale Sand Filter |
2.5 acres |
Source context and notes
# MEETING THE GREEN INFRASTRUCTURE REQUIREMENT (N.J.A.C. 7:8-5.3)
The amendments to the Stormwater Management rules that became operative March 2021 require that major development projects meet the groundwater recharge, stormwater runoff quality and quantity standards through the use of green infrastructure. For the groundwater recharge and stormwater runoff quality requirements, those green infrastructure systems must meet any applicable drainage area limitation at N.J.A.C. 7:8-5.3(b). Those limitations are:
| Best Management Practice | Maximum Contributory Drainage Area |
| --- | --- |
| 1. Dry Well | 1 acre |
| 2. Manufactured Treatment Device | 2.5 acres |
| 3. Pervious Paving Systems | Area of additional inflow cannot exceed three times the area occupied by the BMP |
| 4. Small-scale Bioretention Systems | 2.5 acres |
| 5. Small-scale Infiltration Basin | 2.5 acres |
| 6. Small-scale Sand Filter | 2.5 acres |
Therefore, any of the above listed BMPs will need to be designed to meet the applicable drainage area limit if those BMPs are intended to be used to comply with either of the groundwater recharge or stormwater runoff quality standards. While the stormwater runoff quantity standard must still be met using green infrastructure, BMPs utilized for the stormwater runoff quantity standard alone do not need to meet the contributory drainage area limitations.
# WHAT IS GREEN INFRASTRUCTURE?
Green infrastructure is a well-established stormwater management technique within the stormwater management field and is recognized as an effective stormwater management strategy by the Department, the U.S. Environmental Protection Agency (USEPA), and cities throughout the country.