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Blasting Columbia basalt will close out channel deepening

Friday, October 30, 2009
Posted by: Oregon Water Coalition

Workers under contract with the U.S. Army Corps of Engineers will begin blasting basalt from the bottom of the Columbia River Nov. 1.

The work is taking place to complete the deepening of the Columbia River federal navigation channel from 40-feet to 43-feet. The blasting work will take place along a one-mile stretch of the river between River Miles 87 and 89 near St. Helens, Ore.

This work, along with dredging of a one-mile section near Longview, Wash., will close out the Columbia River Channel Improvement project, a two decade-long effort to deepen the 103-mile navigation channel allowing larger, deeper draft ships and heavier-loaded vessels access to inland ports throughout the Pacific Northwest. The Columbia River moves $18 billion of commerce annually, and is the single largest wheat and barley export gateway in the nation.

The contractor will drill holes into the basalt from a barge-mounted rig and detonate blasting agent to fracture the rock before removing the rock with an excavator. Blasting will take place twice each day, once after sunrise and again before sunset. The contractor must complete blasting operations by Feb. 28.

A 1,500-foot safety zone is planned for both upstream and downstream from blasting operations. When a vessel approaches these signs, the drill boat must be contacted on Marine VHF Channel 16 for permission to navigate through. Paddlers and recreational boaters without marine radios can call the Marine Transportation Coordinator cell phone on the drill boat (503) 396-9893.

This cell number will be posted at local boat launches and marinas. The project site will be patrolled by security guards and the US Coast Guard. Fines may be imposed on boaters entering the safety zone during restricted times. Additional information about the blasting work is available at crci-project.info.

Columbia Basin Bulletin

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I-5 checkstop to help block aquatic invasive species

Saturday, September 26, 2009
Posted by: Oregon Water Coalition

As part of an ongoing effort to keep aquatic invasive species out of Washington waters, all northbound vehicles transporting watercraft past the Ridgefield weigh station on Interstate 5 will be required to stop for an inspection as of, Sept. 25.

The mandatory inspections, scheduled from 9 a.m. to 3 p.m., is the latest in a series of more than two-dozen check stations for aquatic invasive species planned by the Washington Department of Fish and Wildlife around the state this year.

Sgt. Eric Anderson, WDFW enforcement coordinator for the program, said signs will be posted notifying motorists of the inspection at the weigh station at Milepost 18, a key entry point for out-of-state boaters. The inspections can usually be completed in 10 minutes, Anderson said. Failure to stop for an inspection can result in a citation.

“We need the cooperation of boat owners to keep aquatic invasive species out of Washington waters,” said Allen Pleus, unit lead for WDFW’s Aquatic Invasive Species Prevention and Enforcement program. “Once species like zebra and quagga mussels become established, they are extremely destructive to native fish and wildlife while causing millions of dollars in damage to water systems.”

Invasive mussels, which attach themselves to boats or other water-based equipment, have spread quickly in recent years, Pleus said. Since the 1980s, when zebra and quagga mussels entered the Great Lakes in ship ballast water, they have established themselves in more than 20 states, including California, Nevada, Arizona and Utah.

Neither species has yet been found in Washington waters, although WDFW has intercepted and decontaminated 17 boats infested with the tiny mussels in the past three years, Anderson said. Importation of aquatic invasive species is a gross misdemeanor punishable by up to $5,000 in fines and up to a year in jail. Knowingly bringing such species into Washington is a felony and can result in even greater fines and jail time.

The emphasis of the check-station inspection program is to intercept invasive species, not penalize boat owners, Anderson said. “Our primary goal is stop these species from entering our state,” he said. “At the same time, we need boat owners to recognize the importance of inspecting and cleaning their vessels before moving them from one body of water to another.”

Because invasive mussels multiply quickly, they can threaten native fish and wildlife by consuming available food and smothering some species, Pleus said. They can also clog water-intake systems at power plants, irrigation districts, public water suppliers and other facilities, causing millions of dollars in damage.

Pleus noted that mandatory check stations are just one way WDFW is working to keep invasive species out of Washington’s waters. He said the department also works closely with the Washington State Patrol, the U.S. Coast Guard and public agencies in Oregon and Idaho to detect and eradicate the tiny invaders on both recreational and commercial vessels.

More information on aquatic invasive species is available at wdfw.wa.gov.

Columbia Basin Bulletin

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