Leads from main generators to transformers, leads from house machines, and, local feeders for power and lighting, unless 3-phase cable is used, should be in fiber duct. All control wiring, signal wiring, wiring to indicate instruments, etc., should be in metallic conduit.

Care should be taken to insulate all metallic conduit supports to prevent them from becoming conductors of current.

All ground connections from apparatus, insulator supports, instrument transformers, etc., should be insulated from structural steel framing and concrete reinforcing bars.

Ground field may be placed in overburden in pool near spillway section of dam, or in flood plain below dam. Copperweld grounding points in groups are recommended for this work. The total number of points to be determined by soil conductivity test. If points are placed in pool they should be at or near the limit of draw down elevation 990. If in flood plain, they should be driven in an earth bench along edge of tailrace between dam and spillway discharge. This earth bench should be about 10 feet wide and 1 foot above tailwater level. The location alongside tailrace is the better of the two, as it permits of easy test and renewal of points and connections when necessary. It is also more convenient for installing conduit in which to place cable leading to ground field.

One 80-ampere-hour storage battery with two 5 K. W. charging sets will be required for plant.

STAND-BY PERIOD

During the time when water is being stored, no operation in Cove Creek power house other than one of the house generators will be required. This unit will operate 24 hours per day supplying power and light to plant and to families resident there. The water required for unit will reduce storage, but may be necessary, to maintain a small flow in the Clinch River, and this will be the most practical and economical means of drawing it from reservoir.

If there is no demand for water in the stream below dam during shut-down periods, power can possibly be obtained for operating plant and camp from some local distribution system. This would involve construction of a small substation and probably a few miles of light transmission line. Such a source of power is not as reliable as the house unit, and the investment in apparatus plus line loss and cost of power would represent a value in excess of that of water used.

FIRE PROTECTION

Main generating units should be furnished with top and bottom spray rings connected to cooling water supply. Control valves for admitting water to rings of each unit should consist of one gate and one quick opening lever operated valve with drain between them. The quick opening valve should be inclosed in a case having glass front.

Oil storage and filter room should be protected by a standard carbon dioxide fire extinguishing equipment of size suited to requirements.

INITIAL FILLING OF RESERVOIR

It may require several weeks to bring water level in reservoir up to the height necessary for operating power units. During this period the lower Clinch will receive no water from the region above Cove Creek Dam and it is, therefore, assumed that impounding of water will not commence till the beginning of rainy season has brought flow into Clinch from tributaries below Cove Creek to an amount equal to minimum recorded discharge of the river at Clinton.

COST ESTIMATE

It will be noted that attached cost estimate includes, besides items for dam, power house, barge lift, spillway, and general expense, the cost for transmission line from Cove Creek to Dam No. 2, Muscle Shoals. This line must be built in conjunction with the Cove Creek plant, as it is by exchange of power, as well as the discharge of water, that the storage plant can be made to fill the requirements. for which its construction is recommended.

Estimate of cost, Cove Creek Dam and initial transmission line to Wilson Dam

Estimate of cost, Cove Creek Dam and initial transmission line to Wilson Dam-Con.

COMPARISON OF MAJOR FISKE'S TENTATIVE ESTIMATE FOR COVE CREEK DAM WITH

LATEST FIGURES

No detailed figures of Major Fiske's tentative estimate are on file. By analogy from a rough breakdown of the total which Major Fiske made for another purpose it is possible to arrive at an approximation of the main features he considered. To compare these figures with those contained in the detailed estimate prepared by Major Watkins it is necessary to prorate the general and contingent expenses of the latter among the main construction items. Based on such methods the comparison is as follows:

Major COINER. I may say that this is all being published in House Document No. 185. This is the report of Major Watkins, which is the second partial report on the Tennessee River survey, and it is considerably more comprehensive than the partial report of Major Fiske.

Mr. WRIGHT. You say this is a partial report?

Major COINER. Yes.

Mr. WRIGHT. And the Fiske report was partial?
Major COINER. Yes.

Mr. WRIGHT. This is partial?

Major COINER. Yes.

Mr. WRIGHT. When are we to know what it is going to cost?

Major COINER. The endeavor has been to transmit to Congress, as rapidly as it was available the information developed by the survey, so that you might know what was going on and how much more we had to do.

Mr. WRIGHT. You can appreciate, this has been going on for years and we have reached the point where we want to legislate, and we want to legislate intelligently, and we want to know the cost of this.

Major COINER. On Cove Creek, this is final. This is the final report on Cove Creek.

Mr. WRIGHT. That is all.

Major COINER. There are some other elements of the survey of the Tennessee River as a whole that have not been finished, but it is only a matter of a few months.

Mr. HILL. Is the estimate at Dam No. 3 final? Is your report on Dam No. 3 final?

Major COINER. As far as the costs are concerned, yes. Those are the final costs on Dam No. 3. Now, you want these figures of cost for Cove Creek? Mr. WRIGHT. Yes.

Major COINER. The main dam is $7,141,131.

The spillway is $1,861,875.

The power house, including the building and the machinery, is $4,903,457. The navigation facilities are $2,634,516.

The reservoir, including the flowage rights, the land and the clearing of the land where necessary, and the buildings, structures, and moving of railways, and bridges and highways, is $11,318,745.

Mr. WRIGHT. What price did you estimate you would have to pay for the land? Major COINER. The average price is $38.91 per acre.

Mr. WRIGHT. Very well.

Major COINER. That is for 54,525.7 acres.

Mr. MCSWAIN. You did not find what it was assessed for taxes on the books?
Major WATKINS. Yes; every plot of land was carefully gone over.

Mr. MCSWAIN. What was it assessed for taxes, a dollar an acre?
Major WATKINS. I do not remember. Part of this is woodland.
Mr. MCSWAIN. In some places they do not tax woodland at all.

Major COINER. In some places you would find it necessary to change the location of railroads and highways. There are 9.46 miles of relocation of railroad involved. That item is $2,734,149.

Mr WRIGHT. What is the mileage of highways?

Major COINER. The mileage of highways is not given here. The cost for bridges and highways is $2,311,815.

Mr. FISHER. Is the figure as an average from Cove Creek of from Clinton, in the fixing of the railroads that would have to be built, and things of that kind, close to the dam-is that figured from Clinton or Cove Creek.

Major COINER. This is the relocation of existing railroad lines.

Mr. FISHER. Oh, yes.

Major COINER. Now, the necessary construction track to build the dam, that is figured into the cost of the dam.

The construction railroads seems to be figured at $125,000. In addition to the amounts stated above, Major Watkins' estimate includes $6,268,131 for general construction costs, administration and engineering, and $3,412,785 for contingencies. The grand total in $37,540,643.

Mr. WRIGHT. Does that change in any way the installation at Cove Creek Dam from the installation suggested by Major Fiske?

Major COINER. It is slightly less, indicating that the economic installation would not be quite as great as shown by Major Fiske's figures.

Mr. WRIGHT. Dam No. 2 is completed?

Major COINER. Completed.

Mr. WRIGHT. In view of this comprehensive study which has been made of the Tennessee River system, if Dam No. 2 had not been built, would you at this time change the height of No. 2? Would it be built just as it is, if it was to be built now?

Major COINER. That is a rather difficult question to answer, because the whole study has been based upon the assumption that Dam No. 2 was in there. Mr. WRIGHT. I wanted to know if Dam No. 2 would fit in with this general layout.

Major COINER. It fits in very well, as it is. Now, as to whether if Dam No. 2 had not been there and we were starting at the mouth of the river and going on up, we would put No. 2 at exactly that height, it is difficult to say. That requires a lot of study.

Mr. WRIGHT. Has it been necessary to make any repairs on Dam No. 2-the dam itself?

Major COINER. Colonel Robins says there would not have been over 3 feet difference, at the outside, if that dam was constructed now.

Mr. WRIGHT. Would it have been 3 feet higher or 3 feet lower?

Colonel ROBINS. Higher.

Mr. WRIGHT. Have there been any repairs made on Dam No. 2?

Major COINER. Essentially nothing.

Mr. WRIGHT. Essentially nothing.

foundation, or anything about it? Major COINER. No, sir.

Mr. WRIGHT. It is all right?

Major COINER. All right.

Have you found any defects in it, in the

Mr. WRIGHT. You have not found any leaks in it?

Major COINER. Well, yes; there were some places in the construction joints that had to be sealed, but nothing but what you are apt to find in any sort of a large construction of that kind.

Mr. WRIGHT. I am asking you because I have heard rumors that there were defects about it, and I wanted to clear that up. I want to know whether it stands as a completed proposition or a success.

Major COINER. Yes. If that be called a defect, there have been some leakages through some of the construction joints, so that the water got down into the inspection tunnel. It was not in any alarming quantities, but it was disagreeable to anyone who had to go through, inspecting.

Mr. WRIGHT. That has been remedied?

Major COINER. Yes.

Mr. WRIGHT. So that now it is a complete proposition and a success?
Major COINER. Absolutely.

Mr. WRIGHT. There is no trouble and there are no defects about it?

Major COINER. No, sir.

Mr. WRIGHT. It is a finished project?

Major COINER. It is.

Mr. WRIGHT. On Cove Creek, if the Government should not construct the dam at Cove Creek, then the protection by the Government of other persons that might build dams on the Clinch and the Tennessee Rivers would be regulated by what the Federal Power Commission might do, acting under the Federal power act?

Major COINER. It would.

Mr. WRIGHT. I will ask you as an expert if these are not the two provisions; that the act is

Mr. MCSWAIN. He could not be an expert on the act.
Mr. WRIGHT. This is applied every day. [Reading:]

"That the licensee shall maintain the proper works in a condition of repair adequate for the purposes of navigation and for the efficient operation of said works in the development and transmission of power, shall make all necessary renewals and replacements, shall establish and maintain adequate depreciation reserves for such purposes, shall so maintain and operate said works as not to impair navigation, and shall conform to such rules and regulations as the commission may from time to time prescribe for the protection of life, health and, property. Each licensee hercunder shall be liable for all damages occasioned to the property of other by the construction, maintenance, or operation of the project works or of the works appurtenant or accessory thereto, constructed under the license, and in no event shall the United States be liable therefor."

That is one provision.

Major COINER. Yes.