The proposed project is located in McDonough, Henry County, Georgia and consists of converting the intersection of State Route (SR) 81 and County Road (CR) 204/New Morn Drive into a single-lane roundabout. The proposed roundabout would have an inscribed diameter of approximately 56.3 meters (m) (185 feet [ft]), a 6 m (20 ft) wide travel lane within the roundabout, and approach lanes that vary between 3 m (12 ft) wide and 6.4 m (21 ft) wide. The majority of the proposed roundabout construction would occur within the existing intersection. The existing right-of-way (ROW) on CR 204/New Morn Drive is approximately 15.2 m (50 ft). The total proposed ROW width is approximately 24.3 m (80 ft) wide on SR 81 and varies between 15.2 m (50 ft) and 21.3 m (70 ft) wide on New Morn Drive. The speed limit would be reduced to 40.2 kilometers per hour (kph) (25 miles per hour [mph]) through the roundabout. Pedestrian crosswalks would be added to all four approaches to the roundabout. Rumble strips would be installed along all approaches to the roundabout due to speed limits being 72.4 kph (45 mph) and higher (Figure l).
The survey area consists of an Environmental Survey Boundary (ESB), which the Arcadis U.S. Inc. design team provided to Edwards-Pitman, Inc. (EP). The ESB is designed specifically to encompass existing ROW and all areas of possible/foreseeable ground disturbance as a result of the current project, and account for any potential future design changes. The ESB stretches 216 m (708.9 ft) north, 297 m (97 4.6 ft) east, 247 m (810.5 ft) south, and 292.7 m (960.4 ft) west of the intersection of SR 81 and CR 204/New Morn Drive. The total length of the ESB along SR 81 is 0.5 kilometer (km) (0.3 miles [mi]) and CR 204/New Morn Drive is 0.4 km (0.2 mi). The ESB is approximately 55 m (180.4 ft) wide throughout its entirety (see Figure l). A total of 5.4 hectares (ha) (13.3 acres [ac]) was surveyed.
EP conducted a search of Georgia's Natural, Archaeological, and Historic Resources Geographic Information System (GNAHRGIS) and the Georgia Archaeological Site File (GASF), which show no previously recorded archaeological sites within a l km (0.62 mi) radius of the ESB.
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