(a) Commencing at the intersection of the Hartsville-Canisteo town line and Purdy Creek-Shovel Hollow Road; thence easterly along Purdy Creek-Shovel Hollow Road to Canisteo village line; thence counterclockwise along the village line to Canisteo-Hornell Back Road; thence northwesterly along Canisteo-Hornell Back Road to the Hornell city line; thence counterclockwise along the city line to the North Hornell village line; thence due north to the Fremont-Hornellsville town line; thence clockwise along the town line to Arkport-Fremont Road; thence northwesterly along Arkport-Fremont Road to the Arkport village line; thence counterclockwise along the village line to Bishopville Road; thence southerly along a straight line to the intersection of Route 21 and the Hornell city line; thence counterclockwise along the city line to Route 36; thence due south to the Hartsville-Hornellsville town line; thence clockwise along the Hartsville town line to the beginning point.

(b) Commencing at the intersection of Mitchellville Road and the Bath-Urbana town line; thence southeasterly along the town line to Route 54; thence due southeast to Mt. Washington- Argus Hill Road; thence southwesterly along Mt. Washington-Argus Hill Road to Rumsey Road; thence southwesterly along Rumsey Road to the Bath village line; thence clockwise along the village line to the Veterans Administration Center boundary; thence clockwise along the Veterans Administration Center boundary to the Delaware, Lackawanna, and Western Railroad; thence northerly along a straight line to the intersection of the Erie-Lackawanna Railroad and Route 15; thence due east to Mitchellville Road; thence northerly along Mitchellville Road to the beginning point.

(c) Commencing at the intersection of the Erwin-Campbell town line and Meads Creek; thence southeasterly along Meads Creek to Route 15; thence southeasterly along Route 15 to Erwin Hollow Road; thence due east to Route 414; thence southeasterly along a straight line to the intersection of Narrows Creek Road and the Power Transmission Lines; thence easterly along the Power Transmission Lines to a point where they divide near East Corning; thence northeasterly along the Power Transmission Lines to the Steuben-Chemung county line; then southerly along the county line to the Chemung River; thence southwesterly along the Chemung River to Gillette Creek; thence westerly along Gillette Creek to Brown Hollow Road; thence due west to Route 225; thence northerly along Route 225 to the South Corning village line; thence clockwise along the village line to the Corning city line; thence clockwise along the city line to the Chemung River; thence westerly along the Chemung River to the Tioga River; thence southwesterly along the Tioga River to the Canisteo River; thence due west to the Addison village line; thence clockwise along the village line to the intersection of its east boundary and Route 17; thence easterly along Route 17 to the Erie Railroad; thence easterly and northeasterly along the Erie Railroad to Route 17; thence due north to the Power Transmission Lines; thence westerly and northwesterly along the Power Transmission Lines to Curtis Creek; thence due east to Route 15; thence southerly and southeasterly along Route 15 to the Campbell-Erwin town line; thence easterly along the town line to the beginning point; except that area delineated as Level III.