SUBDIVISION REGULATIONS
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
Minimum Right-of-Way Width (ft) | 60 | 60 | 60 |
Minimum Pavement Width (ft) | 30 | 30 | 30 |
Minimum Sidewalk Width (ft) | 5 | 5 | 5 |
Minimum Stopping Sight Distance (ft) | 200 | 150 | 110 |
Maximum Grade % | 4 | 8 | 15 |
Maximum Cul-De-Sac Length | 500 | 500 | 500 |
Minimum Cul-De-Sac Radius (ROW) | 50 | 50 | 50 |
Minimum Cul-De-Sac Radius (pavement) | 40 | 40 | 40 |
Minimum Center Line Radius of Streets with an angle of turn of: | |||
(1) Between 80° and 100° (ft.) | 50 | 50 | 50 |
(2) Less than 80° or more than 10° (ft.) | 200 | 200 | 150 |
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
Right of Way Width (ft) | 60 | 60 | 60 |
Pavement Width (ft) | 36 | 36 | 36 |
Sidewalk Width (ft), residential districts | 5 | 5 | 5 |
Sidewalk Width (ft), non-residential districts | As determined by Planning Commission | ||
Minimum Stopping Sight Distance (ft) | 250 | 200 | 150 |
Maximum Grade % | 4 | 8 | 12 |
Maximum Spacing when intersecting with an Arterial (ft) | 1,320 | 1,320 | 1,320 |
Minimum Center Line Radius (ft.) | 350 | 230 | 150 |
Subgrade CBR Value* | Pavement Thickness (inches), excluding base course | ||
Item 301 | Item 402 | Item 404 | |
3 | 6 | 2 | 1-1/2 |
5 | 5 | 1-1/2 | 1-1/2 |
7 | 4-1/2 | 1-1/2 | 1-1/2 |
10 and more | 4 | 1-1/2 | 1-1/2 |
*To be determined by laboratory analysis and field verification prior to pavement construction. All testing shall be at the expense of the contractor. | |||
Watershed Size (In Square Miles) | Setback Distance (Minimum)
|
50 or greater | 120 Feet |
20 up to 50 | 100 Feet |
10 up to 20 | 75 Feet |
5 up to 10 | 50 Feet |
2.5 up to 5 | 40 Feet |
<1 up to 2.5 | 25 Feet |

Wetland Category | Setback Distance (Minimum)
|
Category 3 | Fifty (50) feet |
Category 2 | Thirty (30) feet |
Category 1 | Ten (10) feet |

GROU P | PERCENT OF SLOPE | FRONT YARD (feet) | SIDE YARD (% of lot width) | RIGHT-OF- WAY (feet) | PAVEMENT (feet) |
1 | 15+ - 25 | 25 | 10 | 50 | 24 |
2 | 26 - 30 | 23 | 10 | 45 | 22 |
3 | 31 - over | 20 | 10 | 40 | 20 |
Table 1: Permanent Stabilization
| |
Area Requiring Permanent Stabilization
| Time Frame to Apply Erosion Controls
|
Any area that will lie dormant for one year or more. | Within 7 days of the most recent disturbance. |
Any area within 50 feet of a surface water of the state and at finished grade. | Within 2 days of reaching finished grade. |
Any other areas at finished grade. | Within 7 days of reaching finished grade within that area. |
Table 2: Temporary Stabilization
| |
Area Requiring Temporary Stabilization | Time Frame to Apply Erosion Controls |
Any disturbed area within 50 feet of a surface water of the state and not at finished grade. | Within 2 days of the most recent disturbance if that area will remain idle for more than 14 days. |
For all construction activities, any disturbed area, including soil stockpiles that will be dormant for more than 14 days but less than one year, and not within 50 feet of a surface water of the state. | Within 7 days of the most recent disturbance within the area. For residential subdivisions, disturbed areas shall be stabilized at least 7 days prior to transfer of ownership or operational responsibility. |
Disturbed areas that will be idle over winter. | Prior to November 1 or the onset of winter weather, whichever occurs first. |
Note: Where vegetative stabilization techniques may cause structural instability or are otherwise unobtainable, alternative stabilization techniques shall be employed. | |
Table 3: Maximum Drainage Area to Silt Fence Based on Slope | |
Maximum Drainage Area (Acres) to 100 Linear Feet of Silt Fence | Range of Slope for a Drainage Area (%) |
0.5 | < 2% |
0.25 | 2% but < 20% |
0.125 | 20% but < 50% |
Table 4: Stabilization | |
Area Requiring Stabilization | Time Frame to Apply Erosion Controls |
Any disturbed area within 50 feet of a surface water of the state and not at finished grade. | Within 2 days of the most recent disturbance if that area will remain idle for more than 14 days. |
For all construction activities, any disturbed area, including soil stockpiles that will be dormant for more than 14 days but less than one year, and not within 50 feet of a stream. | Within 7 days of the most recent disturbance within the area. |
Disturbed areas that will be idle over winter. | Prior to November 1. |
Areas of final grade | Within 7 days of reaching final grade or within 2 days of reaching final grade for areas within 50 feet of a surface water of the state |
Note: Where vegetative stabilization techniques may cause structural instability or are otherwise unobtainable, alternative stabilization techniques shall be employed. These techniques may include mulching or erosion matting. | |
SUBDIVISION REGULATIONS
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
Minimum Right-of-Way Width (ft) | 60 | 60 | 60 |
Minimum Pavement Width (ft) | 30 | 30 | 30 |
Minimum Sidewalk Width (ft) | 5 | 5 | 5 |
Minimum Stopping Sight Distance (ft) | 200 | 150 | 110 |
Maximum Grade % | 4 | 8 | 15 |
Maximum Cul-De-Sac Length | 500 | 500 | 500 |
Minimum Cul-De-Sac Radius (ROW) | 50 | 50 | 50 |
Minimum Cul-De-Sac Radius (pavement) | 40 | 40 | 40 |
Minimum Center Line Radius of Streets with an angle of turn of: | |||
(1) Between 80° and 100° (ft.) | 50 | 50 | 50 |
(2) Less than 80° or more than 10° (ft.) | 200 | 200 | 150 |
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
TERRAIN CLASSIFICATION | |||
Design Standard | LEVEL | ROLLING | HILLY |
Right of Way Width (ft) | 60 | 60 | 60 |
Pavement Width (ft) | 36 | 36 | 36 |
Sidewalk Width (ft), residential districts | 5 | 5 | 5 |
Sidewalk Width (ft), non-residential districts | As determined by Planning Commission | ||
Minimum Stopping Sight Distance (ft) | 250 | 200 | 150 |
Maximum Grade % | 4 | 8 | 12 |
Maximum Spacing when intersecting with an Arterial (ft) | 1,320 | 1,320 | 1,320 |
Minimum Center Line Radius (ft.) | 350 | 230 | 150 |
Subgrade CBR Value* | Pavement Thickness (inches), excluding base course | ||
Item 301 | Item 402 | Item 404 | |
3 | 6 | 2 | 1-1/2 |
5 | 5 | 1-1/2 | 1-1/2 |
7 | 4-1/2 | 1-1/2 | 1-1/2 |
10 and more | 4 | 1-1/2 | 1-1/2 |
*To be determined by laboratory analysis and field verification prior to pavement construction. All testing shall be at the expense of the contractor. | |||
Watershed Size (In Square Miles) | Setback Distance (Minimum)
|
50 or greater | 120 Feet |
20 up to 50 | 100 Feet |
10 up to 20 | 75 Feet |
5 up to 10 | 50 Feet |
2.5 up to 5 | 40 Feet |
<1 up to 2.5 | 25 Feet |

Wetland Category | Setback Distance (Minimum)
|
Category 3 | Fifty (50) feet |
Category 2 | Thirty (30) feet |
Category 1 | Ten (10) feet |

GROU P | PERCENT OF SLOPE | FRONT YARD (feet) | SIDE YARD (% of lot width) | RIGHT-OF- WAY (feet) | PAVEMENT (feet) |
1 | 15+ - 25 | 25 | 10 | 50 | 24 |
2 | 26 - 30 | 23 | 10 | 45 | 22 |
3 | 31 - over | 20 | 10 | 40 | 20 |
Table 1: Permanent Stabilization
| |
Area Requiring Permanent Stabilization
| Time Frame to Apply Erosion Controls
|
Any area that will lie dormant for one year or more. | Within 7 days of the most recent disturbance. |
Any area within 50 feet of a surface water of the state and at finished grade. | Within 2 days of reaching finished grade. |
Any other areas at finished grade. | Within 7 days of reaching finished grade within that area. |
Table 2: Temporary Stabilization
| |
Area Requiring Temporary Stabilization | Time Frame to Apply Erosion Controls |
Any disturbed area within 50 feet of a surface water of the state and not at finished grade. | Within 2 days of the most recent disturbance if that area will remain idle for more than 14 days. |
For all construction activities, any disturbed area, including soil stockpiles that will be dormant for more than 14 days but less than one year, and not within 50 feet of a surface water of the state. | Within 7 days of the most recent disturbance within the area. For residential subdivisions, disturbed areas shall be stabilized at least 7 days prior to transfer of ownership or operational responsibility. |
Disturbed areas that will be idle over winter. | Prior to November 1 or the onset of winter weather, whichever occurs first. |
Note: Where vegetative stabilization techniques may cause structural instability or are otherwise unobtainable, alternative stabilization techniques shall be employed. | |
Table 3: Maximum Drainage Area to Silt Fence Based on Slope | |
Maximum Drainage Area (Acres) to 100 Linear Feet of Silt Fence | Range of Slope for a Drainage Area (%) |
0.5 | < 2% |
0.25 | 2% but < 20% |
0.125 | 20% but < 50% |
Table 4: Stabilization | |
Area Requiring Stabilization | Time Frame to Apply Erosion Controls |
Any disturbed area within 50 feet of a surface water of the state and not at finished grade. | Within 2 days of the most recent disturbance if that area will remain idle for more than 14 days. |
For all construction activities, any disturbed area, including soil stockpiles that will be dormant for more than 14 days but less than one year, and not within 50 feet of a stream. | Within 7 days of the most recent disturbance within the area. |
Disturbed areas that will be idle over winter. | Prior to November 1. |
Areas of final grade | Within 7 days of reaching final grade or within 2 days of reaching final grade for areas within 50 feet of a surface water of the state |
Note: Where vegetative stabilization techniques may cause structural instability or are otherwise unobtainable, alternative stabilization techniques shall be employed. These techniques may include mulching or erosion matting. | |