Grays Harbor and Chehalis River Improvements to Navigation Environmental Studies. Grays Harbor Ocean Disposal Study. Literature Review and Preliminary Benthic Sampling PDF Download
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Author: John M. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 175
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Book Description
Four alternative ocean disposal sites with varying distances from the mouth of Grays Harbor, Washington, are discussed as possible sites to dump approximately 3.3 million cubic yards of dredged material resulting from the widening and deepening of Grays Harbor. The remaining 13.4 million cubic yards of dredged material is targets for ocean dumping. This report includes a preliminary assessment of impacts of the dredging project on aquatic organisms, commercial enterprises, sedimentation and other physical impacts to the harbor. (Author).
Author: John M. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 175
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Book Description
Four alternative ocean disposal sites with varying distances from the mouth of Grays Harbor, Washington, are discussed as possible sites to dump approximately 3.3 million cubic yards of dredged material resulting from the widening and deepening of Grays Harbor. The remaining 13.4 million cubic yards of dredged material is targets for ocean dumping. This report includes a preliminary assessment of impacts of the dredging project on aquatic organisms, commercial enterprises, sedimentation and other physical impacts to the harbor. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 876
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 546
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Book Description
Author: John M. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 61
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Book Description
Four alternative ocean disposal sites with varying distances from the mouth of Grays Harbor, Washington, are discussed as possible sites to dump approximately 3.3 million cubic yards of dredged material resulting from the widening and deepening of Grays Harbor. The remaining 13.4 million cubic yards of dredged material is targeteds for ocean dumping. This report includes the responses of groups and agencies to the questionnaire sent out to collect public opinion data on the proposed ocean dumping project. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 290
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Author:
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ISBN:
Category : Science
Languages : en
Pages : 212
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Author: Stephan A. Kalinowski
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
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Book Description
A 15-month study to inventory wildlife resources on 4 proposed terrestrial dredged material disposal sties and 1 intertidal disposal site was initiated. Major emphasis was placed on inventorying birds and mammals to assess the value of these areas to wildlife. Amphibians, reptiles, and plants received less emphasis. Seven species of amphibians and 3 species of reptiles were captured on fill sites 16, 17, and 18 during this study. The spotted frog and Dunn's salamander have been reported only rarely in Grays Harbor County. Most individuals of these two groups of animals would be killed by disposal of dredge materials on these sites. At least 46 species of waterbirds use the main channel and sloughs proximal to the Cosmopolis Reach of the Chehalis River. Mallards and scaup were the most common waterfowl; highest numbers were seen during winter. Areas preferred by waterfowl were river marshes and upper reaches of sloughs. Large numbers (more than 200) of western grebes, gulls and diving waterfowl used the Cosmopolis Reach during all seasons. During dredging, direct impacts to waterfowl and bald eagles would be negligible; most observations were 5 kms or more upstream from proposed dredging activity. Impacts (i.e. decreased hunting success due to suspended particulates) to diving birds would be minimized by dredging between August and October, when numbers of birds are lowest. Dredging during ebb tides would result in sediments disturbed by dredging flowing into the harbor.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Author: David M. Kehoe
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
Seattle District, U.S. Army Corps of Engineers, is currently conducting studies to ascertain the environmental impacts of widening and deepening the navigation channel in Grays Harbor, Washington. This study is an examination of the origin and amount of sediments filling the navigation channels of Grays Harbor from the Chehalis River basin and the means by which this sediment discharge rate could be reduced. (Author).
Author: CORPS OF ENGINEERS SEATTLE WA SEATTLE DISTRICT.
Publisher:
ISBN:
Category :
Languages : en
Pages : 520
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Book Description
The study determined the need for and feasibility of improving the safety and efficiency of deep-draft water in Grays Harbor, Washington. Features of the tentatively recommended plan include the following: (1) 24.3 miles of channel improvement form the outer bar through the harbor entrance and estuary past the city of Aberdeen and up the Chehalis River to the town of Cosmopolis (Authorized chanel depth would range from 46 feet at the outer bar and entrance to 38 feet through the estuary to Port of Grays Harbor terminals at Aberdeen and 36 feet above port terminals to Cosmopolis); (2) Replacement of the Union Pacific Railrod (UPRR) bridge at Aberdeen; (3) Construction of three turning basins (Hoquiam, Cow Point-Aberdeen, Elliott Slough above UPRR Bridge); (4) Mitigation of 4 acres of lost shallow water fish feeding habitat; (5) Mitigation through dredge modification to avoid increased juvenile and adult crab mortalities from dredging; (6) Improved aids to navigation; (7) Open-water disposal of dredged material at the harbor entrance (Point Chehalis and South Jetty sites) and in the ocean (about 3 1/2 miles from the harbor entrance).
