Huston Drive-Pine Circle Waterline Replacement Gwinnett Co., GA Columbia is providing engineering and survey services for a 6,400 LF foot waterline replacement project for the Gwinnett County Dept. of Water Resources. This project includes replacing approximately 6,400 LF of 2-, 4-, and 6-inch ACP w

GA SR316 Utility Relocate

Utility Relocation Design for Interchange Construction (F-0647-15) SR 316 at Collins Hill Road and SR 20 Buford Highway Gwinnett Co., GA Columbia is providing design of relocations for approximately 7,500 linear feet of 6-inch through 16-inch water main, 2,000 linear feet of 8-inch sanitary sewer, m

White Columns Dam Inspection

White Columns Community Association Dams Fulton Co., GA Columbia provided professional services for the White Columns Community Association in Fulton Co., GA on 5 dams owned and operated by the Community. Columbia developed an inspection program and provided inspection services for five 5 dams withi

Watson Creek Stream Restoration

Watson Creek Stream Restoration Gwinnett Co., GA Columbia provided engineering design and construction services for a 1,100 LF Priority 3 stream restoration project on Watson Creek Tributary No. 1 in that extends from Bruckner Boulevard upstream to a point approximately 500 feet upstream of Crossing

Lake Windsor Spillway Rehab

Lake Windsor Spillway Rehabilitation Gwinnett Co., GA Columbia provided engineering design and construction oversight services for a spillway rehabilitation project of an exempt High-Hazard Dam owned and operated by Gwinnett County Department of Water Resources. The existing gabion spillway channel

N River Dr Culvert

North River Drive Culvert Improvements Gwinnett Co., GA Columbia provided professional services for the culvert improvement project to upgrade the existing triple 42” corrugated steel pipe (CSP) culverts located in a 0.4 square mile watershed at the headwaters of Shadow Lake in the Jackson Creek Wat

Emergency Flood Assistance, O-0128-03 Gwinnett Co., GA Columbia led a team of consultants that provided emergency professional assistance services for the Gwinnett County Dept. of Water Resources during and in the aftermath of the September 21, 2009 flood event. Services included monitoring four (4)