Addendum to the Phase I Archaeological Survey of the Proposed Perimeter Activity Center-ITS Upgrades and System Expansion/Congestion Reduction and Traffic, DeKalb and Fulton Counties, Georgia

The following seven locations, all located in DeKalb County, have been identified by the Perimeter Community Improvement Districts (PCIDs), City of Brookhaven, City of Dunwoody, and City of Sandy Springs as high priority for Advanced Transportation Management System (ATMS) related upgrades.

The proposed project is to be funded by the Congestion Mitigation and Air Quality Improvement Program (CMAQ). The purpose of the project is to provide ATMS upgrades within the PCIDs in order to provide infrastructure to enhance the capabilities of the Perimeter Traffic Operations Program (PTOP), thus reducing delays and increasing efficiency. The ATMS upgrades will include a Traffic Control Center (TCC) located in the City of Dunwoody for the purposes of local monitoring and active management, signal equipment, intersection vehicle detection, and communication devices. The communication devices will include fiber optic interconnect cabling, Closed Circuit Television Cameras (CCTVs), and wireless arterial travel time devices. In addition to the previously documented 20 intersections, and an additional northbound left-turn lane at Peachtree Dunwoody Road at Hammond Drive covered by the original P.I. No. 0012631 survey (Blackwelder 2015), the following six have been added to the project: 1. Perimeter Center West at Perimeter Center Way 2. Perimeter Center West at Old Perimeter Way 3. Ridgeview Road at Crown Pointe Parkway/Meadow Lane 4. Perimeter Center West at Perimeter Center Place NE 5. Perimeter Center West at Central Parkway NE 6. Ashford Dunwoody Road at Ashford Center Parkway

In addition to the six intersections, the revised project description includes an area associated with construction and maintenance, ranging from 5 to 15 feet in width within existing ROW, and extending approximately 500 feet from the intersection of Ashford Dunwoody Road at Perimeter Center East. All major existing corridor ROW widths vary from 75 feet to 150 feet. The standard project limits along the roadway corridors will be 200 feet from the center point of the intersection; where communication equipment is recommended, the project limits along the roadway corridors will be 500 feet from the center point of the intersection. The scope of this project will be limited to communication equipment upgrades to meet local and state standards.