Concrete Products

DEC 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 43 of 83

42 • December 2018 NEW IRON Superior Concrete left nothing to chance in addressing dust control plus process and storm water management—the main concerns expressed in the DC plant permitting. "We have a fully paved yard, skid steer-mounted sweeper, water truck frequently circulating the property and surrounding streets, sprinklers for coarse aggregate stockpiles, and sheltered sand storage," notes Amanda Shepherd. "We have also entered an air quality monitoring program placing dust sensors along three site elevations. Any hourly dust concen- tration level exceeding EPA allowable limits sets off an alarm and notifies our team and DOEE staff." Early in the plant operation, she adds, airborne particles ema- nating from a fire less than a quarter mile away near the Nationals Park activated the dust sensors and alarms; District officials quickly acknowledged the actual culprit. Under normal operating conditions, monitors show Superior Concrete DC dust emissions hovering or below half the allowable legal limits nearly 100 percent of the time. Matching dust control plan performance is the process and storm water management plan. Process water is captured through sloping pavement and trench drains, ensuring all flows to a four-pit weir treat- ment system. Water from the final pit is recycled in truck and plant mixer washout and select concrete batches. Storm water is diverted to a quarter-acre bio-retention pond along the plant's front (South Capitol St.) elevation. Although not readily visible from points other than the immediate street, the pond is loaded with vegetation variet- ies equal to water filtration, yet worthy of professional landscaping. COVER STORY BY DON MARSH District of Columbia Office of Planning and a handful of other DC agencies bill Buzzard Point as "an isolated and under-developed peninsula, with environmental degradation in specific locations. The area suffers from a lack of transportation infrastructure and pedestrian amenities. The majority of roadways do not have sidewalks, crosswalks, or curbs … The public infrastructure does not currently support best management prac- tices in addressing environmental conditions. Limited stormwater drains catch water runoff from streets and other paved surfaces, and few trees are present to mitigate the heat island effect and improve air quality." Under an Urban Design Framework Plan, the agencies envision Buzzard Point as the next in a series of distinct waterfront neighborhoods and home to the DC United Soccer Stadium. Across from that venue, Superior Concrete Materials has built an interim ready mixed plant. Although scheduled to occupy Buzzard Point for a limited period, Superior Concrete has brought the new facility environmental management and aesthetic touches more indicative of a permanent neighbor. Whether operating from its present site or a permanent District home, Superior Concrete figures to play an important role in Buzzard Point transformation outlined in the DC Government's Urban Design Framework Plan. It calls for requisite infrastructure upgrades benefitting pedestri- ans, cyclists and motorists, and more than 11 million square feet of new building space, including multi-unit properties for up to 6,000 residents. A VITAL NEIGHBOR SENSITIVE TO AN EMERGING WATERFRONT COMMUNITY MAP: DC Office of Planning Front elevation (South Capitol St.) Rear elevation (Half St.)

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