Conn. Gen. Stat. § 8-1aa

(1) “Traprock ridge” means Beacon Hill, Saltonstall Mountain, Totoket Mountain, Pistapaug Mountain, Fowler Mountain, Beseck Mountain, Higby Mountain, Chauncey Peak, Lamentation Mountain, Cathole Mountain, South Mountain, East Peak, West Peak, Short Mountain, Ragged Mountain, Bradley Mountain, Pinnacle Rock, Rattlesnake Mountain, Talcott Mountain, Hatchett Hill, Peak Mountain, West Suffield Mountain, Cedar Mountain, East Rock, Mount Sanford, Prospect Ridge, Peck Mountain, West Rock, Sleeping Giant, Pond Ledge Hill, Onion Mountain, The Sugarloaf, The Hedgehog, West Mountains, The Knolls, Barndoor Hills, Stony Hill, Manitook Mountain, Rattlesnake Hill, Durkee Hill, East Hill, Rag Land, Bear Hill, Orenaug Hills;

(2) “Amphibolite ridge” means Huckleberry Hill, East Hill, Ratlum Hill, Mount Hoar, Sweetheart Mountain;

(3) “Ridgeline” means the line on a traprock or amphibolite ridge created by all points at the top of a fifty per cent slope, which is maintained for a distance of fifty horizontal feet perpendicular to the slope and which consists of surficial basalt geology, identified on the map prepared by Stone et al., United States Geological Survey, entitled “Surficial Materials Map of Connecticut”;

(4) “Ridgeline setback area” means the area bounded by (A) a line that parallels the ridgeline at a distance of one hundred fifty feet on the more wooded side of the ridge, and (B) the contour line where a ridge of less than fifty per cent is maintained for fifty feet or more on the rockier side of the slope, mapped pursuant to section 8-2 ;

(5) “Development” means the construction, reconstruction, alteration, or expansion of a building; and

(6) “Building” means any structure other than (A) a facility as defined in section 16-50i or (B) structures of a relatively slender nature compared to the buildings to which they are associated, including but not limited to chimneys, flagpoles, antennas, utility poles and steeples.