Table 1 Green Infrastructure BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff Quantity | ||||
---|---|---|---|---|
Best Management Practice | Stormwater Runoff Quality TSS Removal Rate | Stormwater Runoff Quantity | Groundwater Recharge | Minimum Separation From Seasonal High Water Table (feet) |
Cistern | 0% | Yes | No | — |
Dry well(a) | 0% | No | Yes | 2 |
Grass swale | 50% or less | No | No | 2(e) 1(f) |
Green roof | 0% | Yes | No | — |
Manufactured treatment device(a)(g) | 50% or 80% | No | No | Dependent upon the device |
Pervious paving system(a) | 80% | Yes | Yes(b) No(c) | 2(b) 1(c) |
Small-scale bioretention basin(a) | 80% or 90% | Yes | Yes(b) No(c) | 2(b) 1(c) |
Small-scale infiltration basin(a) | 80% | Yes | Yes | 2 |
Small-scale sand filter | 80% | Yes | Yes | 2 |
Vegetative filter strip | 60% to 80% | No | No | — |
[Notes corresponding to annotations (a) through (g) are found following Table 3 below.] |
Table 2 Green Infrastructure BMPs for Stormwater Runoff Quantity (or for Groundwater Recharge and/or Stormwater Runoff Quality With a Waiver or Variance From N.J.A.C. 7:8-5.3) | ||||
---|---|---|---|---|
Best Management Practice | Stormwater Runoff Quality TSS Removal Rate | Stormwater Runoff Quantity | Groundwater Recharge | Minimum Separation From Seasonal High Water Table (feet) |
Bioretention system | 80% or 90% | Yes | Yes(b) No(c) | 2(b) 1(c) |
Infiltration basin | 80% | Yes | Yes | 2 |
Sand filter(b) | 80% | Yes | Yes | 2 |
Standard constructed wetland | 90% | Yes | No | N/A |
Wet pond(d) | 50% to 90% | Yes | No | N/A |
[Notes corresponding to annotations (b) through (d) are found following Table 3 below.] |
Table 3 BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff Quantity Only With a Waiver or Variance From N.J.A.C. 7:8-5.3 | ||||
---|---|---|---|---|
Best Management Practice | Stormwater Runoff Quality TSS Removal Rate | Stormwater Runoff Quantity | Groundwater Recharge | Minimum Separation From Seasonal High Water Table (feet) |
Blue roof | 0% | Yes | No | N/A |
Extended detention basin | 40% to 60% | Yes | No | 1 |
Manufactured treatment device(h) | 50% or 80% | No | No | Dependent upon the device |
Sand filter(c) | 80% | Yes | No | 1 |
Subsurface gravel wetland | 90% | No | No | 1 |
Wet pond | 50% to 90% | Yes | No | N/A |
NOTES TO TABLES 1, 2, AND 3: | |
(a) | Subject to the applicable contributory drainage area limitation specified at Subsection D(15)(b). |
(b) | Designed to infiltrate into the subsoil. |
(c) | Designed with underdrains. |
(d) | Designed to maintain at least a ten-foot-wide area of native vegetation along at least 50% of the shoreline and to include a stormwater runoff retention component designed to capture stormwater runoff for beneficial reuse, such as irrigation. |
(e) | Designed with a slope of less than 2%. |
(f) | Designed with a slope of equal to or greater than 2%. |
(g) | Manufactured treatment devices that meet the definition of green infrastructure at Subsection B. |
(h) | Manufactured treatment devices that do not meet the definition of green infrastructure at Subsection B. |
Best Management Practice | Maximum Contributory Drainage Area |
---|---|
Dry well | 1 acre |
Manufactured treatment device | 2.5 acres |
Pervious pavement systems | Area of additional inflow cannot exceed three times the area occupied by the BMP |
Small-scale bioretention systems | 2.5 acres |
Small-scale infiltration basin | 2.5 acres |
Small-scale sand filter | 2.5 acres |
Table 4 | |||||
---|---|---|---|---|---|
Water Quality Design Storm Distribution | |||||
Time (minutes) | Cumulative Rainfall (inches) | Time (minutes) | Cumulative Rainfall (inches) | Time (minutes) | Cumulative Rainfall (inches) |
1 | 0.00166 | 41 | 0.1728 | 81 | 1.0906 |
2 | 0.00332 | 42 | 0.1796 | 82 | 1.0972 |
3 | 0.00498 | 43 | 0.1864 | 83 | 1.1038 |
4 | 0.00664 | 44 | 0.1932 | 84 | 1.1104 |
5 | 0.00830 | 45 | 0.2000 | 85 | 1.1170 |
6 | 0.00996 | 46 | 0.2117 | 86 | 1.1236 |
7 | 0.01162 | 47 | 0.2233 | 87 | 1.1302 |
8 | 0.01328 | 48 | 0.2350 | 88 | 1.1368 |
9 | 0.01494 | 49 | 0.2466 | 89 | 1.1434 |
10 | 0.01660 | 50 | 0.2583 | 90 | 1.1500 |
11 | 0.01828 | 51 | 0.2783 | 91 | 1.1550 |
12 | 0.01996 | 52 | 0.2983 | 92 | 1.1600 |
13 | 0.02164 | 53 | 0.3183 | 93 | 1.1650 |
14 | 0.02332 | 54 | 0.3383 | 94 | 1.1700 |
15 | 0.02500 | 55 | 0.3583 | 95 | 1.1750 |
16 | 0.03000 | 56 | 0.4116 | 96 | 1.1800 |
17 | 0.03500 | 57 | 0.4650 | 97 | 1.1850 |
18 | 0.04000 | 58 | 0.5183 | 98 | 1.1900 |
19 | 0.04500 | 59 | 0.5717 | 99 | 1.1950 |
20 | 0.05000 | 60 | 0.6250 | 100 | 1.2000 |
21 | 0.05500 | 61 | 0.6783 | 101 | 1.2050 |
22 | 0.06000 | 62 | 0.7317 | 102 | 1.2100 |
23 | 0.06500 | 63 | 0.7850 | 103 | 1.2150 |
24 | 0.07000 | 64 | 0.8384 | 104 | 1.2200 |
25 | 0.07500 | 65 | 0.8917 | 105 | 1.2250 |
26 | 0.08000 | 66 | 0.9117 | 106 | 1.2267 |
27 | 0.08500 | 67 | 0.9317 | 107 | 1.2284 |
28 | 0.09000 | 68 | 0.9517 | 108 | 1.2300 |
29 | 0.09500 | 69 | 0.9717 | 109 | 1.2317 |
30 | 0.10000 | 70 | 0.9917 | 110 | 1.2334 |
31 | 0.10660 | 71 | 1.0034 | 111 | 1.2351 |
32 | 0.11320 | 72 | 1.0150 | 112 | 1.2367 |
33 | 0.11980 | 73 | 1.0267 | 113 | 1.2384 |
34 | 0.12640 | 74 | 1.0383 | 114 | 1.2400 |
35 | 0.13300 | 75 | 1.0500 | 115 | 1.2417 |
36 | 0.13960 | 76 | 1.0568 | 116 | 1.2434 |
37 | 0.14620 | 77 | 1.0636 | 117 | 1.2450 |
38 | 0.15280 | 78 | 1.0704 | 118 | 1.2467 |
39 | 0.15940 | 79 | 1.0772 | 119 | 1.2483 |
40 | 0.16600 | 80 | 1.0840 | 120 | 1.2500 |
R = A + B - (A x B)/100 |
Where: | ||
R | = | Total TSS percent load removal from application of both BMPs. |
A | = | The TSS percent removal rate applicable to the first BMP. |
B | = | The TSS percent removal rate applicable to the second BMP. |
Table 5: Current Precipitation Adjustment Factors | |||
---|---|---|---|
County | Current Precipitation Adjustment Factors | ||
2-year Design Storm | 10-year Design Storm | 100-year Design Storm | |
Atlantic | 1.01 | 1.02 | 1.03 |
Bergen | 1.01 | 1.03 | 1.06 |
Burlington | 0.99 | 1.01 | 1.04 |
Camden | 1.03 | 1.04 | 1.05 |
Cape May | 1.03 | 1.03 | 1.04 |
Cumberland | 1.03 | 1.03 | 1.01 |
Essex | 1.01 | 1.03 | 1.06 |
Gloucester | 1.05 | 1.06 | 1.06 |
Hudson | 1.03 | 1.05 | 1.09 |
Hunterdon | 1.02 | 1.05 | 1.13 |
Mercer | 1.01 | 1.02 | 1.04 |
Middlesex | 1.00 | 1.01 | 1.03 |
Monmouth | 1.00 | 1.01 | 1.02 |
Morris | 1.01 | 1.03 | 1.06 |
Ocean | 1.00 | 1.01 | 1.03 |
Passaic | 1.00 | 1.02 | 1.05 |
Salem | 1.02 | 1.03 | 1.03 |
Somerset | 1.00 | 1.03 | 1.09 |
Sussex | 1.03 | 1.04 | 1.07 |
Union | 1.01 | 1.03 | 1.06 |
Warren | 1.02 | 1.07 | 1.15 |
Table 6: Future Precipitation Change Factors | |||
---|---|---|---|
County | Future Precipitation Change Factors | ||
2-year Design Storm | 10-year Design Storm | 100-year Design Storm | |
Atlantic | 1.22 | 1.24 | 1.39 |
Bergen | 1.20 | 1.23 | 1.37 |
Burlington | 1.17 | 1.18 | 1.32 |
Camden | 1.18 | 1.22 | 1.39 |
Cape May | 1.21 | 1.24 | 1.32 |
Cumberland | 1.20 | 1.21 | 1.39 |
Essex | 1.19 | 1.22 | 1.33 |
Gloucester | 1.19 | 1.23 | 1.41 |
Hudson | 1.19 | 1.19 | 1.23 |
Hunterdon | 1.19 | 1.23 | 1.42 |
Mercer | 1.16 | 1.17 | 1.36 |
Middlesex | 1.19 | 1.21 | 1.33 |
Monmouth | 1.19 | 1.19 | 1.26 |
Morris | 1.23 | 1.28 | 1.46 |
Ocean | 1.18 | 1.19 | 1.24 |
Passaic | 1.21 | 1.27 | 1.50 |
Salem | 1.20 | 1.23 | 1.32 |
Somerset | 1.19 | 1.24 | 1.48 |
Sussex | 1.24 | 1.29 | 1.50 |
Union | 1.20 | 1.23 | 1.35 |
Warren | 1.20 | 1.25 | 1.37 |
R1.5 — Cluster | |||||
---|---|---|---|---|---|
Project | Area | Front | Side | Rear Yard | |
Beechwood Acres | 25,000 | 50 | 20 | 40 | |
Washington Leas | 15,000 | 25 to 30 | 15 | 30 | |
Country Gate | 20,000 | 50 | 20 | 40 | |
Woodside | 20,000 | 50 | 20 | 40 | |
Dalton Meadows | 20,000 | 50 | 20 | 40 | |
Windsor Meadows | 25,000 | 50 | 25 | 40 | |
Arbor Walk | 15,000 | 25 | 18 | 40 | |
Washington Greene | 25,000 | 40 | 15 | 40 |
R1.5 — Non-Cluster | |||||
---|---|---|---|---|---|
Project | Area | Front | Side | Rear Yard | |
Sandalwood | 30,000 | 45 to 65 | 25 | 40 | |
Washington Hunt | 30,000 | 45 | 25 | 40 |
RR — T1 | |||||
---|---|---|---|---|---|
Project | Area | Front | Side | Rear Yard | |
Country Meadows | 25,000 | 450 | 25 | 40 | |
Brookshire Estates | 25,000 | 50 | 26 | 40 |
Angle of Parking Space (degrees) | One-Way Aisle (feet) | Two-Way Aisle (feet) | |
---|---|---|---|
90 | 22 | 24 | |
60 | 18 | 19 | |
45 | 15 | 19 | |
30 | 11 | 17 | |
Parallel | 11 | 17 |
Maximum Permitted Sound Pressure Levels in Decibels | |||
---|---|---|---|
10.6 Octave Band in Hertz | Along Residential District Boundaries | At Any Other Point on the Lot Boundary | |
20 to 75 | 72 | 79 | |
75 to 150 | 67 | 74 | |
150 to 300 | 59 | 66 | |
300 to 600 | 52 | 59 | |
600 to 1,200 | 46 | 53 | |
1,200 to 2,400 | 40 | 47 | |
2,400 to 4,800 | 34 | 41 | |
Above 4,800 | 31 | 39 |
Minimum Principal Building Setback (feet) | Minimum Buffer Width (feet) | |
---|---|---|
Railroad | 150 | 100 |
New Jersey Turnpike and I-195 | 200 | 100 |
Arterial roads — Routes 130, 33 & 526 | 150 | 100 |
Municipal and county collector roads | 100 | 50 |
Percentage of Site That Is Wooded (Predevelopment) | Area Required to be Planted |
---|---|
Less than 50% | At least 20% |
Greater than 50% | At least 40% |