ENVIRONMENTAL FACT SHEET
NHDES Technical Bulletin - WSPCD-WU-1995- 1
Comprehensive Shoreland Protection Act, RSA 483-B
MINIMUM SHORELAND PROTECTION STANDARDS
Limits Within the Protected Shoreland 250 ft
Prohibited Uses:
Establishment/expansion of salt storage yards, auto junk yards, solid waste & hazardous waste facilities.
Use of fertilizer, except lime and/or wood ash, on lawns or areas with grass on residential properties.
Uses Requiring State Permits:
Public water supply facilities
Public water & sewage treatment facilities
Public utility lines
Existing solid waste facilities
All activities regulated by the Wetlands Board per RSA 482-A
Other Restricted Uses
All new lots, including those in excess of 5 acres, are subject to subdivision approval by DES.
Setback requirements for all new leaching portions of new septic systems are determined by soil characteristics.
Minimum lot size in areas dependent on septic systems determined by soil type.
Alteration of Terrain Permit standards reduced from 100,000 ft2 to 50,000 ft2.
Total number of residential units in areas dependent on on-site sewage & septic systems, not to exceed I unit per 150 feet of shoreland frontage.
Natural Woodland Buffer Restrictions 150 ft.
Where existing, a natural woodland buffer must be maintained.
Tree cutting limited to 50% of the basal area of trees, and 5096 of the total number of saplings in a 20 year period. A
healthy, well-distributed stand of trees must be maintained.
Stumps and their root systems must remain intact in the ground within 50 feet of the reference line.
New Septic System Leachfield Setbacks
125 feet where soil down gradient of leachfield is porous sand & gravel. 125 ft.
100 feet where soil maps indicate presence of soils with restrictive layers within 18 inches of natural soil surface. 100 ft
75 feet where soil map indicates presence of all other soil types. 75 ft.
75 feet minimum setback from rivers.
Primary Building Line* 50 ft.
Primary buildings setback behind line.
Water dependent structures allowed in front of line, only if approved by Wetlands Board.
Reference Line
For coastal waters = highest observable tide line
For rivers = ordinary high water mark
For natural fresh water bodies = natural mean high water level
For artificially impounded fresh water bodies = water line at full pond
*If a municipality establishes a shoreland setback for primary buildings, whether greater or lesser than 50 feet, that
defines the Primary Building Line for that municipality.
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