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Researchers gauge green infrastructure’s capacity for high runoff

University of Maryland, College Park, researchers are approaching urban and suburban stormwater management with the ultimate goal of increasing resiliency to major weather events. With models predicting more rain than historical levels, plus an increased frequency of particularly intense and destructive storms, they note, flooding is a major concern in communities that are becoming more settled.

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EPA determination spares admixtures, coloring agents from SPCC regulation

After more than three years of the Environmental Protection Agency soliciting expert advice and public comment on issuing a proposed rulemaking potentially expanding the petroleum product spill prevention, control and countermeasure (SPCC) terms typical of concrete plant environmental permits, Administrator Andrew Wheeler has signed a final action establishing no new regulatory requirements under the Clean Water Act (CWA).

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Hawaii DOT welcomes demonstration of carbon dioxide-injected pavement mixes

Working with Island Ready-Mix Concrete of Kapolei, the Hawaii Department of Transportation is testing material made with the CarbonCure Technologies process, where industry-sourced carbon dioxide gas is recycled into the mix, imparts strength development and other performance properties, and enables portland cement optimization. As demonstrated in 100-plus ready mixed plants on the mainland, the process entails conversion of the greenhouse gas into a mineral form, permanently embedded in a concrete slab or structure.

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FMCSA matches mixer driver hours exemptions for dump, tanker peers

Years of conferring with agency officials on the unique aspects of concrete production and delivery have netted National Ready Mixed Concrete Association staff and Safety, Operations and Environment Committee members a Federal Motor Carrier Safety Administration proposal updating drivers’ Hours of Service rules.

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Better Plants, Better Buildings group assembles at Volvo powertrain line

Volvo Group North America’s Hagerstown, Md. powertrain facility hosted a tour as part of the U.S. Department of Energy’s Better Buildings, Better Plants 2019 Summit. The early-July event highlighted the production line with special emphasis on advanced crankshaft grinding machines that help reduce energy consumption.

Read more: Better Plants, Better Buildings group assembles at Volvo powertrain line