Concrete Products

NOV 2018

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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Page 49 of 66 November 2018 • 45 FEATURE ENVIRONMENTAL AWARDS COMEBACK KID AWARD CONCRETE SUPPLY CO., LLC WEST PLANT • CHARLOTTE, NORTH CAROLINA Construction began in 2017 to update the West operation, which is buffered by a mature tree line that improves the property's appear- ance and acts as a dust barrier. A larger batch plant and redesign of yard layout accommodate higher ready mixed output along with increased process and storm water volumes. Process water from the batch plant and mixer wash down areas is directed to either a wash pit system or separate holding bay. Once settled out, the water is recycled back into the plant to be used in concrete production or to flush out mixer drums. In addition to recycling efforts, Concrete Supply has installed a water spray station that removes loose material on outbound mixer trucks. The equipment reduces the amount of water consumed in traditional wash down methods. The plant manager and two batchmen handle housekeeping duties and ensure that water is directed to the proper holding bays and the recycling system functions properly. They also conduct routine air, stormwater collection and underground storage tank inspections. New employees undergo environmental management training during orien- tation, then participate in staff-wide annual sessions on compliance measures and plant upkeep. Mixer drivers are instructed to report incidences of contractors' improper washout material disposal and ensure correct documentation of such action. The Charlotte West site's long, narrow configuration limits room for Concrete Supply to manage returned concrete. Any returned load of one-quarter yard or more is hardened and transferred to a local crushing facility. Smaller returned volumes are conveyed to a wash pit system, fines from which are dried and taken to the recycling facility for blending with crushed stock. Just shy of six decades in operation, the West plant has grown along with the City of Charlotte. The high profile site compels extra dil- igence in emissions control, as indicated in dedicated baghouses for each of the batch plant's five cementitious material silos, plus a dust collector serving the mixer truck alley. Concrete Supply is a charter supporter of the National Ready Mixed Concrete Associa- tion-backed Build With Strength coalition.

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