Engineering
Top stories summarized by our editors
5/23/2017

An illegal sand mining operation in California's Monterey County is cited as one source of erosion on the coast, per the California State Lands Commission. The operation, the last of its kind in California, extracts 200,000 cubic yards of sand each year.

5/23/2017

Adsorption is a popular solution in Sustainable urban Drainage Systems, or SuDS, but little is understood about the degree of contamination in their detained sediment. However, new research in the UK identifies trace metals and their concentrations in SuDS assets' sediment and flags their potential eco-toxicity.

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MDPI (Switzerland)
5/23/2017

The Liberty Island, one of the largest dredges of its kind in the US, is working in Hampton Roads, Va., to help restore a 7-mile length of beach. The dredge is pulling up and sampling sand to ensure that it matches sand already on the beach area.

5/23/2017

A ridge formed from dredged sediment would revive marshlands and shield Louisiana's Plaquemines Parish from storms under a joint project of the Army Corps of Engineers and the parish. The ridge is planned for Tiger Pass, near Venice, using sediment transported from Southwest Pass, which is the Mississippi River's main navigation channel.

5/23/2017

Insects are rapidly turning Mississippi River Delta wetland marshes into open water as they consume vast acreages of roseau cane. But Louisiana authorities have turned down a $376,000 plan to begin addressing the threat.

5/23/2017

Cleveland, Tenn., is joining other municipalities in the state under its Qualifying Local Program, which is designed to reduce duplication in the stormwater permitting process. The program sets up specific criteria that allow local Municipal Separate Storm Sewer Systems programs to pursue approval.

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sewer systems
5/23/2017

The Environmental Protection Agency is providing six clarifications to its remedial action policies for sediment cleanups. They cover early action, data collection, risk assessments, ecological data, monitoring of endpoints and collaboration with Clean Water Act programs.

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JD Supra
5/23/2017

Speed is the goal as the Army Corps of Engineers plans revisions in a key permit for Louisiana to commence work on the Mid-Barataria Sediment Diversion. Corps leaders are expected to approve altered requirements for a Section 408 permit by October.

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Army Corps of Engineers
5/23/2017

Vietnam's southern Ca Mau province is losing more than 1,000 acres a year to coastal erosion, the state-run Vietnam News Agency reports. The province has spent $27.8 million to remedy the problem with 4 miles of dikes, but a local official says about double that amount is still needed.

5/23/2017

The Hellfire missile fired from US drones can't be used in cloudy weather, which interferes with its laser-based guidance system. The GBU-38 JDAM GPS-guided bomb is a new and comparatively cheaper alternative at $20,000, and it's now undergoing tests of its claimed 15-mile range from launch point to target.

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New Atlas
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Hellfire missile, GPS