DeKalb Utility District Water System Improvements
DeKalb County, Tennessee – Construction was recently completed on the water system improvements project in DeKalb County, Tennessee. This project, initiated in 2012, consisted of the design, construction management and inspection of four separate contracts with a construction cost totaling more than $13.8 million. Contracts included a 3 MGD water treatment plant, raw water intake, more than 52,000 linear feet of 6-inch and 8-inch diameter water lines and approximately 20,000 linear feet of 18-inch diameter raw and finished water transmission lines. GMC was instrumental in helping the client obtain funding for the project from three agencies, including the State Revolving Fund Loan, Rural Development and the Appalachian Regional Council. All four contracts were completed and closed out on time and within budget.
Athens High School
Athens, Alabama – Construction is underway on a new 280,000-square-foot high school for Athens City Schools (ACS). The two-story building will accommodate up to 1,250 students and help alleviate crowding in parts of the school system. An array of learning environments, including typical and tiered classrooms, informal and flexible spaces and specialized educational spaces, such as computer and engineering labs, media center, consumer science and shop, support the school’s STEM curriculum and meet the needs of the 21st-century student. The two-story grand lobby features a full wall of glass and overlooks the exterior courtyard encompassing a visual art garden and shade structures for outdoor classes. The design includes an 850-seat auditorium, music facilities, administrative areas and spaces for specialized programs, such as JROTC and theater. Two full-size gymnasiums, one practice and an arena-style competition gym, a weight room and related athletic support facilities will accommodate ACS’ numerous athletic programs. An ICC-500 storm shelter capable of withstanding 250 mph winds with capacity to hold the entire student body is also incorporated in the design. The high school is slated to open for the 2018-19 school year and will be adjacent to the ACS central office, also designed by GMC.
ARJWS Water Treatment Facility AOP Upgrade
Anderson, South Carolina – Anderson Regional Joint Water System (ARJWS) has experienced taste and odor issues with its drinking water caused by organic compounds associated with algal blooms, 2-Methylisoborneol (MIB) and geosmin, in addition to problems with iron and manganese. GMC conducted a study to investigate treatment alternatives to meet the long-term needs of the 48 MGD water treatment plant and to address emerging contaminant issues. The formulaic approach resulted in a treatment strategy that holistically addressed taste and odor, color and emerging contaminants. Ultimately, an advanced oxidation process (AOP) utilizing ozone + peroxide treatment was found to be the most viable option, with the ability to feed ozone alone and augment with peroxide for quenching ozone residuals. The addition of AOP to AJRWS’ treatment process will allow for economical and efficient removal of taste and odor-causing compounds while continuing to meet existing water treatment standards. GMC teamed up with Brasfield & Gorrie as the construction manager at risk to deliver these process improvements. Construction of the required structural components began in January 2017, paving the way for ARJWS to treat the seasonal taste and odor issues by spring 2018.