EPA, Northern Alaska Contractors Settle Over Quarry Discharges

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The U.S. Environmental Protection Agency (EPA) has reached a settlement with Northern Alaska Contractors LLC (NAC) for violations of Alaska’s Pollutant Discharge Elimination System Multi-Sector General Permit requirements that protect against pollution caused by stormwater runoff at the Ugadaga Quarry in Unalaska, Alaska.

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CDE to Host Virtual Wet Processing Symposium

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Wet processing manufacturer CDE plans to host a virtual trade event for the construction-materials wet processing industry across the globe. Continuing its Engineering Insights education series, the major two-day virtual event will take place on Oct. 14-15. Across the two days, CDE experts, together with a host of guests and industry figures, will facilitate a series of dynamic, educational, and informative presentations…

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Did Quarry Blast Cause an Earthquake?

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Dec. 20, 2019 – Did it or didn’t it? A small tremor on the Bruce Peninsula in Ontario, Canada, appears to be the result of a quarry blast, according to Blackburn News. On Dec. 13, a 2.1 magnitude tremor with an epicentre 14 km north of Wiarton, Ontario, registered on the national seismic network, the article stated. Research Scientist Stephen Crane with Natural Resources Canada said a…

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Texas Trying to Clear the Air

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Dec. 17, 2019 – The Texas Commission on Environmental Quality (TCEQ) has expanded its network of air-monitoring stations by introducing two new monitoring stations in Central Texas. One location is in Comal County and the other in Bexar County. Both monitors are now operational, according to Corridor News. The stations take measurements of particulate matter in the air, commonly notated as PM2.5…

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