September 24, 2013
The Thornton Quarry will soon serve as a stormwater reservoir for the village of Thornton, Illinois.
A “last blast” at the quarry on Monday removed tons of 400-million-year-old limestone, making way for the village to eventually use the site for flood relief on the South Side and in the south suburbs, according to a report from CBS Chicago.
The Metropolitan Water Reclamation District told CBS Chicago the reservoir, once complete, will be able to hold nearly 8 billion gallons of rainwater and raw sewage.
John Lemon, principal civil engineer for the project, said the reservoir will connect to the Deep Tunnel project, allowing flood waters to flow away from homes in the South Side and the south suburbs and preventing polluted water from entering Chicago River waterways.
The Thornton Quarry reservoir is expected to be ready for use in 2015.