To account for more impervious cover and additional gates as part of the terminal and apron expansion at the Austin airport, a new stormwater runoff collection system has been constructed and triples the airport’s capacity to manage and treat stormwater and de-icing fluid runoff from the terminal apron.
Four new stormwater, de-icing detention ponds can hold 3.8 million gallons
As part of the 48-acre apron improvement and expansion project, the Austin-Bergstrom International Airport has completed the construction of four new concrete-lined ponds that can collectively hold up to 3.8 million gallons of water. The ponds make up the new collection system and provide an increased ability to manage stormwater and deicing fluid effectively, sustainably and within compliance with environmental permits.
About 12,750 cubic yards of concrete was poured to create the four new ponds, which triple the capacity of the previous pond system that was replaced as part of the apron expansion. The new ponds help account for the addition of more impervious cover with the new terminal construction and the expansion of the apron, along with increased de-icing activity.
The new ponds, located south of the eastern side of the Barbara Jordan Terminal apron and Taxiway Hotel, increase the airport's ability to manage stormwater runoff. The construction also included new equipment such as pumps, valves, flow and pH meters, aerators and blowers.
Overall, the four ponds can hold up to 3.8 million gallons of water. Two ponds, H1 and K3, are sedimentation/filtration water quality ponds. H1 holds 611,708 gallons of water and is 105 feet long, 40 feet wide and 23.4 feet deep. K3 holds 1.1 million gallons and is 155 feet long, 45-feet wide and 23.2 feet deep.
Ponds K1 and K2 are concrete basins used to capture, manage and treat stormwater that is contaminated with deicing fluid. These two ponds are each about 155 feet long, 49 feet wide and 23.7 feet deep. K1 holds 1 million gallons of water and K2 holds 1.1 million gallons.
Sixty-inch reinforced concrete pipes and box culverts ranging from 10 by 8 feet to 6 by 6 feet in size convey stormwater from the terminal apron to the ponds, and eventually to the outfall into Onion Creek.
The previous ponds that served the apron have been demolished to make way for new apron space. Throughout its growth and operation, the Austin airport has worked to prevent negative environmental impacts resulting from stormwater runoff, aircraft and pavement de-icing.
9-gate terminal expansion work continues
The construction project that will add nine new gates to the Barbara Jordan Terminal continues as approximately 65 percent of the exterior glass panels are now in place. The panels that are 10 feet by 4 feet and 7.5 feet by 5 feet each are being added to the exterior of the terminal. The 9-gate expansion will add 88,359 square feet, or about 29 percent, of new concourse space to the terminal.
Did you know?
Launched in March 2017, the Pour It Out bottled water conservation station inside the terminal has collected an average of 18 gallons of water, the equivalent of 144 – 16-ounce water bottles per day. The airport is looking to add three more stations in the terminal in 2018.