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29-844 (Pt. 1) O 74 59

APPROPRIATION TITLE:

Construction, General

Channels and Harbors (Navigation)

PROJECT: Weymouth-Fore and Town Rivers, Massachusetts (Continuing)

LOCATION:

Weymouth-Fore River flows into Hingham Bay, an arm of Boston Harbor, Massachusetts. The tributary area consists of the Town of Braintree on the left bank and the Towns of Weymouth, Hingham and Hull on the right bank. Town River is located in Quincy, Massachusetts and joins the Weymouth-Fore River about 2 miles above its mouth.

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JUSTIFICATION:

Balance to Complete After

FY 1975

1/ Reduction assigned as savings

The chief navigational difficulties in the combined waterway are those which stem from inadequate channel depths and widths. Vessels now using the river are chiefly T-2 tankers drawing slightly over 30 feet and Liberty colliers drawing about 29 feet which are forced to wait until the tide rises five or more feet before attempting to transit the waterThe deepest draft vessel that could safely navigate the waterway under present conditions could draw only about 34.5 feet as the mean tidal range is 9.5 feet in this locality. In Town River the problem of depth is more pronounced because

way.

ordinary material

Channel rock removal

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Jun 1976

Entire Project

60

Jun 1976

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the existing project depth is 27 feet. Prospective vessels will draw about 38 feet after channel deepening and widening. Navigation is also hampered by insufficient channel width and two abrupt bends. The larger vessels have considerably more beam than vessels in current use and widening is necessary to accommodate future shipping commensurate with project depths.

Existing commerce on the waterway consists chiefly of bulk cargoes received from East Coast, Gulf, and, to a minor extent South American and West Indies Ports. The 1972 commerce over the Weymouth-Fore River waterway amounted to 1,712,000 tons Of this total about 96% were petroleum products and the remainder diversified products, such as chemicals, chemical specialties, waxes and vegetable oils. The commerce in Town River, totaling 613,000 tons, consisted of nearly 100% petroleum products. Commerce on the Weymouth Fore and Town River channels is expected to increase during the anticipated project life. Average annual navigation benefits are estimated at $2,554,000.

FISCAL YEAR 1975:

The requested amount of $1,800,000 would be applied as follows:

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Expenditure of these funds will provide for economical prosecution of the project during the fiscal year.

COMPLETED MODIFICATIONS

The completed project for Weymouth-Fore River, authorized by the River and Harbor Act of 1935 as modified by the Acts of 1940 and 1954, provides for a 30-foot channel 500 feet wide from deep water through Nantasket (Hull) Gut. It continues generally 300 feet wide into Weymouth-Fore River through the Fore River Bridge and forms a maneuvering basin 470 to 650 feet wide. The project also provides for a channel generally 300 feet wide and 27 feet deep between Nut and Peddocks Islands. The project was completed in 1960 at a total cost of $5,185,800.

The completed project for Town River, authorized by the River and Harbor Act of 1937 as modified by the Act of 1954, provides for a 27-foot channel generally 250 feet wide extending from its junction with Weymouth-Fore River to a point 1.3 miles upstream; a turning basin 450 feet wide and about 1,000 feet long at the inner end of the channel and a 15-foot channel, 100 feet wide continuing from the upstream limit of the 27-foot channel to a line just below the Quincy Electric Light and Power Company substation. The project was completed in 1959 at a total cost of $1,286,300 including $340,200 in NonFederal expenses.

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NON-FEDERAL COSTS: Local interests are required to provide, without cost to the United States, all lands, easements and rights-of-way necessary for the construction and subsequent maintenance of the project; hold and save the United States free from damages due to construction and subsequent maintenance of the project; make such necessary alterations to sewer lines or other obstructing features as are necessary; and provide and maintain without cost to the United States depths commensurate with channel depth in berthing areas and local access channels serving the terminals, and maintain the enlargement of the small-boat anchorage. Estimated costs to local interests for alterations are $100,000.

STATUS OF LOCAL COOPERATION:

Formal assurances were accepted by the Division Engineer on 24 December 1968.
COMPARISON OF FEDERAL (CORPS OF ENGINEERS) COST ESTIMATES:

The current Federal cost estimate of $25,000,000 is an increase
of $1,000,000 over the latest estimate ($24,000,000) submitted to Congress. This change includes increases of $800,000 and
$200,000 for construction features and government costs respectively. The increase in construction features resulted from
an increase of $2,200,000 for removal of rock and unclassified material based on after dredge surveys, an increase of
$470,000 due to price level change and a decrease of $1,870,000 based on completion of two contracts. The increase in
government costs reflects an increase of $30,000 due to Federal pay increases, $105,000 due to reanalysis of requirements
due to increased rock and unclassified material and $65,000 in increased overhead due to G.S.A. rental.

BENEFIT TO COST RATIO: The benefit to cost ratio of 2.1 to 1 is the same as last presented to Congress (FY 1974). The
benefit to cost ratio is based on the incremental benefits and costs associated with this project modification.
STATUS OF ENVIRONMENTAL IMPACT STATEMENT: The Draft Environmental Impact Statement is scheduled for submission to CEQ in
the third quarter of FY 1974. The Final Statement is scheduled for submission in the fourth quarter of FY 1974.

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Initial planning funds were appropriated in FY 1967 and initial construction funds were appropriated

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