CH2M HILL will join the City of Baton Rouge/Parish of East Baton Rouge, Louisiana to host a tour of the South Wastewater Treatment Plant (SWWTP) on Tuesday, September 30, from 9am-3:30pm, during the largest water quality conference and exhibition in the world, WEFTEC 2014 – New Orleans, LA, Where the Greatest Minds in Water Meet.

Under the Program Management of CH2M HILL, the City-Parish (C-P) has invested more than $250 million in upgrades to the SWWTP to bring the plant into compliance with the National Pollutant Discharge Elimination System (NPDES) permit, improve technologies, efficiencies and effectiveness, and prepare for future growth, as well as facilitate the closure of the its Central Wastewater Treatment Plant.

The plant improvements were constructed over three different projects, each providing unique challenges and benefits. The Immediate Action Plan (IAP) project, completed in February 2011, included the construction of a 120 million gallon per day (MGD) trickling filter recirculation pump station to improve permit compliance. Value engineering efforts on this project saved the C-P more than $25 million dollars.

The South WWTP Wet Weather Improvements, Phase 1 project was designed and constructed to accommodate wet weather flows via storage. This project increased plant influent pumping capacity to 373 MGD, included the construction of three 20‐MG concrete storage tanks and one 6‐MG storage tank, for a total of 66 MG for wet weather storage, a new, more efficient headworks, including screening and grit removal, and odor control. The Phase I project was completed in July 2013 at a cost of $108 million.

The South WWTP Wet Weather Improvements, Phase 2 project, is the largest capital improvements project in the C-P history at a cost of $111 million. This project, which is  approximately 90% complete with and expected completion date of December 2014, will increase plant treatment capacity from 120 MGD to 205 MGD by constructing solids contact basins for wet weather flows. Additionally, the C-P is installing a plant-wide SCADA system, additional odor control, emergency generators, and a new 54-inch outfall to the Mississippi River under this project.

Some unique challenges encountered during these projects include the acquisition and demolition of more than 60 properties to accommodate expansion, heavy construction within the confines of an operating treatment facility, outfall permitting, and the high water levels of the nearby Mississippi River.

The tour will cover the influent pumping stations, the new preliminary treatment facility, storage tanks, odor control, SCADA, solids contact basins, and the effluent pumping station. We expect more than 80 water and wastewater professionals from around the world to take the tour.

These projects are part of the C-P’s Sanitary Sewer Overflow (SSO) Control and Wastewater Facilities Program, which includes 110 projects with an investment of more than $1 billion to address an existing Consent Decree, while planning for Baton Rouge’s future sewer infrastructure needs.

For more information on the SSO Control and Wastewater Facilities Program project, visit