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Dewar for all the remaining materials, and all the work except piledriving, required to build a pier-head to north pier, and 200 feet of pilework. The only bid for pile-driving was excessive, and therefore rejected. A pile-driver was hired to drive piles at $1 70 per pile. As soon as the machinery could be gotten ready the dredging apparatus was sent from White River Harbor to this harbor, and there is now a channel 12 feet deep between piers.

Since dredging the channel the dredge has been at work removing slabs from old slab-pier and sand to give place for putting in the pilepier connecting the east end of south pier and the shore.

The cost of the work was as follows:

12,126 linear feet timber, at 12 cents per foot 97 cords of slabs, at $1 49 per cord

350,561 cords of stone, at $11 50 per cord ... ....

1000

3,180 linear feet Norway pine piles, at 10 cents per foot.
Dredging...

Framing 12,126 linear feet timber, at 14 cents per foot..
Labor, resetting, refilling, &c., three cribs.

Superintendence

Advertising..

$1,515 75 144 53

4, 031 45 318 00

5,107 59

1,697 64

192 63

1,170 88

30.00

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Less amount covered in Treasury, repairs, &c.,

25, 831 30

by act approved July 12, 1870...

Amount expended during fiscal year

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Amount on hand July 1, 1871....

During the present season the pier-head to the north pier will be placed, and the pile-pier connecting the east end of south pier and the shore will be built, which work will entirely exhaust the above balance. The necessity for the removal of the old slab-pier on south side of channel has become almost imperative. The slabs above water are rotten, and the whole pier is unsteady, and until removal a bar will always form between the crib-piers, just to the west. The amount of earth and slabs to be removed is 48,800 cubic yards, which will cost $26,840. The requisite revetment will cost $8,600. The sum of the two amounts will be required for the fiscal year ending June 30, 1873, which is $35,440.

Père Marquette is in the collection district of Michigan. The nearest port of entry is Grand Haven, and the nearest light-house is at Grand Point au Sable. A beacon-light has been erected on south pier.

Abstract of proposals received and opened, May 4, 1871, for furnishing all the requisite materials and doing the work at harbor at Père Marquette, Michigan.

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37 per foot driven, bid for driving piles, which was rejected as exorbitant.

Abstract of contracts awarded for improvement of harbor at Père Marquette, Michigan.

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Statement of vessels entered and cleared Père Marquette Harbor, showing number, tonnage, crews, and cargoes, from April 13 to June 30, (inclusive,) 1871.

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B 4.

A

REPORT OF OPERATIONS AT THE HARBOR AT PENTWATER, MICHIGAN.

After due advertising and opening of proposals, August 27, 1870, a contract for furnishing 250 cords of stone was awarded to G. P. Adams ⚫ & Bro. The work of repairing the south pier was done by hired labor. The work was very expensive, owing to the very uneven settling of the crib substructure.

Proposals were opened May 4, 1871, and contracts were awarded to Pierce & Whaling for iron bolts; and to Messrs. Hurley & Corlett for the remaining materials and all the work of building a pier-head to north pier, and connecting the east end of south pier with the shore, (a breach having been made through the old slab-pier;) and to T. Stewart White for dredging. Under these contracts work has been commenced, and the above described work will be finished during the present season. The following is the detailed cost of the work:

32841 cords of stone, at $12 per cord ....

100

102,519 feet, board measure, timber, at $11 per M.

18,080 pounds drift-bolts, at 35 cents per pound..
858 pounds screw-bolts, at 54 cents per pound
309 cords of slabs, at $1 50 per cord....

127,274 feet, board measure, timber, framed and put in place,

at $17 per M ........

3883 cubic feet pine timber, at 26 cents per foot..

218 cubic feet oak timber, at 38 cents per foot..

191 piles, driven and capped, at $4 50 per pile 192 cords of stone, rehandled, at $2 50 per cord

19 cords of stone, delivered in work, at $13 75 per cord ......... 188 cubic yards slabs removed, (above water,) at 25 cents per yard

Labor....
Superintendence
Advertising

Total

On hand July 1, 1870.....

$3,940 92 1, 127 71 632 80

47 19

463 50

2,163 65

101 05

82 84

859 50

480 00

261 25

47.00 2, 785 94 853 01 109 50

13, 955 86

$4,302 63

Appropriation approved July 11, 1870

Appropriation approved March 3, 1871.

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Less amount covered in Treasury, appropriation, repairs, &c., by act approved July 12, 1870.

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Amount expended during fiscal year ending June 30....... 13, 955 86

Amount on hand July 1, 1871..

10, 085 04

This balance will be entirely exhausted during the present season. The condition of this harbor is the worst of any under my charge. The old slab revetments are falling to pieces, allowing a deal of sand to fall into the channel, and much more is blown into it from the neighboring sand-hills. The first troublecan be ended by revetting the channel

way with piles, and the channel much benefited by widening it, as shown in the accompanying sketch in red. On the north side of the channel a large portion of the slab revetment has fallen into the channel. The débris will be removed at once. This side of the channel should also be protected by a new revetment. This work will cost $54,780, which can be profitably expended during the fiscal year ending June 30, 1873.

Pentwater is in the collection district of Michigan, and the nearest port of entry is Grand Haven, sixty miles distant. The nearest lighthouse is at Grand Point au Sable. I append herewith—

1. Abstract of proposals received and opened August 27, 1870. 2. Abstract of proposals received and opened May 4, 1871.

3. Abstract of contracts awarded 1870, 1871.

4. Statement of vessels entered and cleared, &c.

5. Sketch showing condition of work.

I have the honor to be, very respectfully, your obedient servant,

F. U. FARQUHAR, Captain, United States Engineers.

Abstract of proposals received and opened August 27, 1870, for furnishing stone at Pentwater

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Abstract of proposals received and opened May 4, 1871, for furnishing the requisite materials, and doing the work for improving the harbor at Pentwater, Michigan.

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