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 41 of 66 November 2018 • 37 FEATURE ENVIRONMENTAL AWARDS EASTERN REGION SECOND PLACE AGGREGATE INDUSTRIES MID-ATLANTIC REGION ROCKVILLE EAST READY MIX CONCRETE • ROCKVILLE, MARYLAND A transit mixed operation on a well kept, four-acre site in a industrial zoned area, Rockville East RMX averages 400 yd. of con- crete daily, and offers special night pour production as customers require. Aggregate Industries designates a Site Environmental Representative for ready mixed operations. He or she is responsible for ensuring day-to-day environmental com- pliance, monitoring, and record-keeping. All concrete site employees and mixer drivers undergo environmental compliance training. Rockville East RMX site engineers tai- lored a 10-step water quality settling control system, anchored by a storage vault inter- cepting all water from the property. Safety grating protects team members and filters solids before entering the vessel, all water from which is processed through a treatment system prior to discharge. Water treatment is part of a compre- hensive Rockville East RMX environmental management system, organized and managed through the Envoy database containing all records, permits, plans and audits, plus train- ing documentation. Authorized personnel can access the EMS through log-in creden- tials; site staff keeps hard copies of permits and records for local inspectors. Rockville East team members support Aggregate Industries' extensive Corporate Social Responsibility program. In the last year, Mid-Atlantic Region staff has donated more than $32,000 in cash, $56,000 worth of materials and over 400 work hours to worthy causes. Topography yielded an efficient process water management system at Rockville East RMX, culminating in a custom pH treatment struc- ture (left, top). A 6,000-gal. liquid nitrogen tank (above) is tapped to cool aggregate. The gas eliminates the ice packaging waste, along with physical labor and potential injuries, and expedites concrete batching. Aggregate Industries Mid-Atlantic Region team members gather once a year for training or refresher sessions covering safety and environmental management.

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