Sources: Chryso Group, Paris; CP staff In a partnership with tunnel boring machine (TBM) lubricant specialist Condat SA of France, Chryso has developed a backfill grout solution, TBM SGS (Smart Grout System), exhibiting the potential as a substitute for bentonite. A clay that expands when hydrated, bentonite is commonly used in backfill mix designs but brings environmental impacts tied to…Read More
Florida roads can lead 14 million state-licensed drivers to pristine white sand beaches, picturesque parks, and other natural destinations. However, most drivers are unaware of the lasting effect the surface of the road they are traveling has on Florida’s delicate ecosystem and economy. What if they knew that a road surface like concrete could lessen the number of pollutants that…Read More
Eyeing deliveries throughout southern California, CalPortland Co. is deploying compressed natural gas-powered bulk tankers as part of strategy to capture fuel economy and lower the net greenhouse gas emissions associated with cement production at its Oro Grande plant. The producer has staged 24 CNG-fueled tractors with double bulk trailers along a slow-fill island station and related fueling infrastructure at the…Read More
Source: U.S. Environmental Protection Agency; CP staff A new rule establishes that when promulgating significant regulatory actions or developing influential scientific information, the Environmental Protection Agency will give greater consideration to studies where the underlying dose-response data are available in a manner sufficient for independent validation. The rule does not require the release of personally identifiable information or confidential business…Read More
Sources: U.S. Department of Agriculture, Forest Service; CP staff The USDA Forest Service has opened to public comment a 20-year Mining and Reclamation Plan of Operations that Phoenix-based Drake Cement LLC penned with an eye to extracting 300,000 to 500,000 tons of concrete-grade, natural pozzolan from a Kaibab National Forest parcel. The deposit is part of the existing Williams Quarry,…Read More
Sources: Pennsylvania Aggregates and Concrete Association, Harrisburg; U.S. Environmental Protection Agency; CP staff EPA Administrator Andrew Wheeler and Pennsylvania Aggregates and Concrete Association Chairman Rod Martin (Martin Stone Quarries) have signed a four-year, first-of-its-kind memorandum of understanding (MOU) to formalize a partnership pursuing environmental stewardship. It expands EPA and PACA activities to prioritize funding, coordinate on regulatory programs, recognize concrete…Read More
Sources: Charah Solutions Inc., Louisville, Ky.; CP staff
A Southeastern utility has tapped Charah Solutions for a Closure by Removal impoundment project encompassing upward of 100 acres of ash deposits at a coal-fired power station that was retired in 2015. Work will include installation of environmental controls plus rail infrastructure improvements and extension, along with loadout area construction. Over a multi-year contract, Charah anticipates processing of 2 million-plus tons of impounded material for beneficial use as concrete-grade fly ash, while preparing the former pond acreage to be restored as usable property.Read More
Source: Elixsys Inc., Aiken, S.C.
Chemical specialist Elixsys reports successful laboratory extraction of industrial-grade compounds from power generating stations’ coal combustion products (CCP). Through methods exhibiting “zero waste and environmental impact” and marketing agreements in place or progress, the company plans to bring finished materials to construction and industrial supply chains.Read More
Source: National Ready Mixed Concrete Association, Alexandria, Va.
With data from 155 producers operating 1,954 plants, the National Ready Mixed Concrete Association has published a third version of its industry average or industry-wide environmental product declaration (IW-EPD). The document functions as a national proxy for the bulk of concrete in residential, commercial and public construction, and complies with the latest Product Category Rule for Concrete, released earlier this year.Read More
Sources: U.S. Environmental Protection Agency; CP staff
EPA has kicked off a year-long celebration leading to observance of a 50th anniversary, December 2, 2020. “Since the agency’s inception under the leadership of the late Administrator William Ruckelshaus, EPA staff have worked tirelessly to clean up our air, water, and land for the American people,” says Administrator Andrew Wheeler. “Together, we have achieved significant milestones in support of our mission to protect human health and the environment.”Read More