1. Town of Westport pLANNING bOARD SUBDIVISION RULES AND REGULATIONS

2. Purpose
“..provision of adequate access to all of the lots in a subdivision by ways that will be safe and convenient for travel; for lessening congestion in such ways and the adjacent public ways; for reducing danger to life and limb in the operation of motor vehicles; for reducing danger to life and limb in the operation of motor vehicles; for ensuring compliance with the applicable zoning ordinances or by-laws; for securing adequate provisions for water, sewerage, drainage, overground and underground utility services, fire police and other similar municipal requirement, and street lighting and other requirements where necessary in a subdivision…”

3. Proposed Changes Update filing requirements
Revise drainage requirements to be consistent with Board of Health regulations.
Define requirements for as-built plans and layout plans
Revised standards for street design
Cul de sacs
Pavement width
Pavement thickness

4. Update filing requirements
Form A Plans, Preliminary Subdivision Plans & Definitive Subdivision Plans
Number of size of paper copies
Digital copies
Reference to filing fees

5. Revise drainage requirements to be consistent with Board of Health regulations.
Standardized Design Requirements
Design Storms use Cornell Numbers
2 year inches ( inches)
10 year inches ( inches)
25 year inches ( inches)
100 year 8.5 inches ( inches)
Specific Design Criteria
Clearing area ,000 s.f.
Impervious Driveways & Walkways 2,500 s.f.
Building area 2,000 s.f.
Lawn Area ,500 s.f.

6. Revised standards for street design, Cul de sacs, Pavement width & Pavement thickness
Revised to meet Fire Department standards
Outside cul de sac radius 60’
Minimum gravel road width 20’
Standardized Pavement width
Residential Streets 22’ plus berms
Collector Streets 26’ plus berms
Pavement Thickness
Increased base course of asphalt from 1.5” to 2”

9. Proposed Additional Changes
Remove subparagraph III-H (3)
No streets will be submitted for acceptance until the subdivision has been completely developed and the Highway Surveyor certifies that said streets meet the current requirements of the Town.
V-B (8)
Street name signs, designed and installed in accordance with the Planning Board and Highway Department shall be provided.
Add to Rural Residential Lane Cross Section
1 ½” of crushed stone ¾” minus (The Board may consider alternative materials provided it minimizes dust and provides for a durable drivable surface.)

10. Lilly’s Lane
Brother’s Way
Gel’s Way