Navy opens public review on Test Pile Program in Hood Canal

by Tim Flanagan on May 20, 2011

SILVERDALE, neurologist Wash. – The U.S. Navy would like to invite the public to comment on a Test Pile Program proposed in Hood Canal beginning this summer.

The Test Pile program would involve the installation and removal of 29 open ended, pilule hollow steel test and reaction piles ranging in size from 30 inches in diameter to 60 inches in diameter in Hood Canal over a forty day work period between July 16 and October 30, phthisiatrician 2011.

The purpose of the Test Pile Program is to acquire accurate geotechnical and sound propagation data to validate design concepts, construction methods, and environmental analyses for the proposed second Explosive Handling Wharf (EHW-2) and future projects at the Bangor waterfront at Naval Base Kitsap (NBK) in Silverdale, Washington.

Impact pile driving activities will only occur from July 16 to October 14, 2011 (contingent on the results of spawning fish egg surveys), vibratory pile driving and other in-water work will continue through October 30, 2011.  Lateral load and tension load testing will be conducted on select piles and in-water noise propagation, during pile installation and removal, will be measured.

All piles will be driven to an initial embedment depth with a vibratory hammer.  The test piles will require the use of an impact hammer to be driven the remaining 10-15 feet (approximately 3-4 meters) and for proofing.  As a contingency, any of the 29 test and reaction piles that cannot be driven to the desired depth using a vibratory hammer will be installed using an impact hammer.

Geotechnical and sound data collected during pile installation and removal will be integrated into the design, construction, and environmental planning for the Navy’s proposed (EHW-2).  The Navy proposes to install the test piles in the location planned for EHW-2 (south of the existing EHW); however, other future projects at the Bangor waterfront at NBK can also benefit from the geotechnical and sound propagation data gathered from driving the test piles.  The Test Pile Program will not disrupt current operations at the existing EHW or any other facility along the Bangor waterfront at NBK.

In accordance with the Council on Environmental Quality regulations implementing the National Environmental Policy Act, the Navy has prepared an Environmental Assessment (EA) for the Test Pile Program at NBK at Bangor and has concluded that an Environmental Impact Statement (EIS) is not required.

A  Finding of No Significant Impact (FONSI) addressing this action will be based on an EA dated June 2011, which will evaluate the potential environmental effects of constructing the Test Pile Program.

The Navy is accepting written comments on the Test Pile Program Environmental Assessment from May 19 through June 2, 2011.

Comments must be postmarked by June 2, 2011 to be considered during the public review period.  Please address written comments:

Commanding Officer
Naval Facilities Engineering Command Northwest
1101 Tautog Circle, Silverdale, WA 98315
ATTN: Mr. Thomas Dildine – NEPA Project Manager

Or email to:
Thomas.dildine@navy.mil

A copy of this Environmental Assessment is available at:
www.cnic.navy.mil/Kitsap/OperationsAndManagement/ EnvironmentalSupport/index.htm

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