92 DOCUMENTARY HISTORY OF THE FLORIDA CANAL

or Gulf approach section is approximately 27 miles long, with a bottom width
of channel varying from 1,000 to 500 feet The summit section, approxi-
mately 67.8 miles long, will have a bottom width of 250 feet. The remaining
portion of the canal, from the east lock to the Atlantic, approximately 106.6
miles long, will have a bottom width of 400 feet. Except for the summit sec-
tion, the canal will be at sea level with channel depth of 80 feet plus a 2-foot
overdepth in sand and a 3-foot overdepth in rock. The summit section will
be at elevation 40 feet above mean sea level, with depths as above.
 The alinement of the canal is as indicated on the attached map.
 The project proposes the construction of a ship canal with all necessary
locks, dams, bridges, ferries, shops, buildings, etc., necessary for its operation.
 Cost of project.-Below is given the estimated total cost of the project.
This estimate is based upon quantities furnished by a special board of the
Corps of Engineers, United States Army, in their report to the Chief of Engi-
neers, United States Army, dated June 3, 1963, and later modifications and
revisions thereof made by the United States Engineer Department. These
quantities as based upon reasonably accurate surveys and computations there-
from, as made by the United States Engineers Department. Unit prices have
been independently developed by the examining engineer. The estimated cost
of this project is given in greater detail In the annexed supplement to this
report.
 The following is a summary of the estimated cost of the project:
Land---------------------- --------------- $3,084,000
Construction cost:
 Clearing and grubbing ---------- --- $2,181, 500
 Locks and auxiliary works----- --.------.--. 21,861,800
 Water supply -------------------- 1, 882,000
 Bridges--..-------- -------- 6, 680, 000
 Ferriese------------------------ --- 160,000
 Aids to navigation------.------------------- 415,050
 Turning basins---------------------- 608, 600
 Highway relocation------.--.. --------........ 175,000
 Channel excavation-..--- ------ .. 44,251, 150
 Contingency (about 10 percent) -------------- 7,819,900

 Total construction cost------------------------ 86,000,000
 Contractor's profit, bond, and insurance (10 percent)----------- 8,600,000
 Engineering (2% percent) -------------------------------- 2,150, 000
 Administration and legal------------------------------ 6,416,000
 Interest during construction----.----- ------------------- 8,800,000
 Total cost of project--------------.-----. ---------- 115,000,000
 Approximate grant (30 percent of $86,000,000) ---------- 25,800,000
 (From p. 5.)
 The construction of the proposed canal and its necessary appurtences would
 present no new or unusual engineering problems. It is recognized that cer-
 tain construction features will require considerable study as to method and
 procedure but it will not be necessary to experiment or to use untried or new
 types of construction. Particular reference is here made to soil conditions
 at the lock sites. At the locations considered, foundation conditions are not
 as favorable as might be desired, but no problem which cannot be solved is
 offered.
 In general, types of construction proposed follow accepted standards of
 practice. The canal crosesection proposed, type of locks and their arrange-
 ment, and auxiliary items are based upon the experience gained through the
 operation of other canals, with due consideration having been given to affect-
 ing local conditions. To water supply for the summit section was devoted
 considerable study, both as to volume of water available and to the effect
 which the withdrawal of sufficient water for the canal operation would have
 upon adjacent ground water supply for town, city, and other water service, and
 upon adjacent ground under cultivation. While the preliminary report of the
 United States Engineer Corps, above referred to, indicates a small margin of
 available water over possible maximum requirements, the examiner has since
 been verbally advised that additional investigation and study has led to the con-
 clusion that the amount of water available is amply sufficient for the require-