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Mr. ANDREWS. Let me ask you again, How much did you say heating nd air conditioning of the proposed Madison Memorial Library Building would add to the operating load of the Capital Power Plant ercentagewise? Was it 40 percent?

Mr. RUBEL. Yes, sir; 40-percent increase in the refrigeration load. 'he additional steam load for heating can be supplied by the existing eam-generating equipment. In modern office buildings, the high-innsity artificial illumination provides most of the heat for comfort onditions.

Mr. ANDREWS. It is hard to believe that one building would add 40 ercent. Mr. RUBEL. The proposed building has 1,700,000 square feet of floor>ace in it. It has floorspace that can accommodate 5,000 persons. The ayburn Building has less than 1 million square feet of usable floorace and has added a refrigeration load of 3,000 tons, or about 29 rcent of the load existing prior to the advent of that building. Mr. ANDREWS. Your plant now provides air conditioning and heat how many buildings? Mr. RUBEL. All of the legislative buildings on Capitol Hill and the upreme Court Building. A total of nine buildings. Mr. ANDREWS. And you say this Madison Memorial Library Buildg will add 40 percent to the refrigeration load? Mr. RUBEL. Yes, sir. Mr. ANDREWS. I do not understand it. You have the Capitol Build

Mr. RUBEL. It is large in physical dimensions but the air-conditionç load is only about 1,500 tons, relatively small compared to 5,300 is required by the Madison Memorial Library Building. It has been ighly estimated that the usable floor space in the Capitol is 465,000 iare feet. Mr. ANDREWS. On page 118 in the first paragraph under the increase

the purchase of electrical energy, you make reference to a saving 923,525 in 1967. What do you mean by that or how did you figure it?

Ir. HENLOCK. That, Mr. Chairman, was where Mr. Rubel estimated 335,000 and the actual cost came to $1,331,475. As he indicates, each ir there may be a slight fluctuation.

INCREASE FOR STOKER REHABILITATION

Ir. ANDREWS. You are asking for $10,000 for stoker rehabilitation. plain that item. Ir. HIENLOCK. That is on page 121 of the justification. Ir. RUBEL. Two or three years ago the Congress authorized the recement of the spreader stoker in each of the three steam generators he Capitol Power Plant. Each of these generators has a steamerating capacity of 110,000 pounds per hour. At that time the cers were 12 years old and there was evidence all three should be aced, but we decided it could be done under a 3-year program, reing one stoker each year. We have replaced two stokers at a cost ewhat less than originally contemplated. o you have that figure? (r. HEXLOCK. Originally, we told you it would cost in the neighbor1 of $140,000, however, by Mr. Rubel working out an agreement

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whereby we have purchased the required replacement parts ourselves and installed them with our own Power Plant personnel, under the supervision of a representative of the manufacturer of the stokers, instead of doing all the work by contract, we were able to reduce the total replacement cost, thereby effecting a $35,000 saving on the whole program. * Mr. ANDREWS. The committee will adjourn until tomorrow at 1) o'clock.

WEDNESDAY, APRIL 3, 1968. Mr. ANDREWS. The committee will come to order.

EXPANSION OF FACILITIES, CAPITOL POWER PLANT

PROGRAM AND FINANCING (IN THOUSANDS OF DOLLARS)

1967 actual

1968 estimate

1969 estimate

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Program by'activities:
Expansion of steam generating and refrigeration facilities at the

Capitol Power Plant and modification, expansion, and im-
provement of the steam and chilled water distribution systems

served by the plant (obligations) (object class 25.1).. Financing:

Unobligated balance available, start of year: 21.40 Appropriation....... 21.49 Contract authorization.

Unobligated balance available, end of year: 24.40 Appropriation.... 24.49 Contract authorization......

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New obligational authority.---
New obligational authority:

Appropriation...
Transferred to other accounts..---

Appropriation (adjusted).....
Relation of obligations to expenditures:
Total obligations (affecting expenditures)...
Obligated blance, start of year.
Obligated balance, end of year.

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STATUS OF UNFUNDED CONTRACT AUTHORIZATION (IN THOUSANDS OF DOLLARS)

holonce start of vear Unfunded balance, start of year.........

.............--------Unfunded balance, end of year....

Appropriation to liquidate contract authorization.............................

115.

On page 97 of the committee print there appears a nonrecurring iteru of $250,000 from last year's bill for continuing the program of expanding the Capitol Power Plant facilities. I believe $135,000 of that was subsequently, in the supplemental bill in December, transferte: for emergency repair work on the west-central part of the Capite That would have left you $115,000; is that correct?

Mr. HENLOCK. Yes, sir.

AUTHORIZED BUT UNFUNDED EXPANSION WORK

Mr. ANDREWS. Looking at the bottom of the page, at the schedule of status of unfunded contract authorization, it is indicated that at the beginning of the coming fiscal year there will be an unfunded balance of $635,000. What does that mean or what does it represent?

Mr. HENLOCK. When the project was authorized by Public Law 35–895 on September 2, 1958, the authorized limit of cost for the project was fixed at $6.5 million, and that is what we expect the total vork to cost. You have funded, to date, $5,865,000, so all that the 635,000 item represents is the balance that has not been appropriated inder the Authorization Act and which we believe will be eventaully equired to complete the program. Mr. ANDREWS. Basically what is the work we are talking about? Mr. HENLOCK. Expansion of facilities at the Capitol Power Plant nd its steam and refrigeration distribution systems, required by the xpansion of buildings and structures and other additions on the Hill ince 1958 and additional services required to serve them at the power lant. Mr. ANDREWS. What particular work at the Power Plant? Mr. HENLOCK. Mr. Rubel can tell you about that. Mr. ANDREWS. Tell us briefly and expand on it in the record. Mr. RUBEL. Generally, it included the procurement and installation

four refrigeration machines, associated pumping equipment, and oling towers; the procurement and installation of four oil-fired vilers and associated fuel oil pumping and storage facilities; a new al-handling installation with its associated coal car trackage; and imerous secondary items of work. Mr. ANDREWS. Just general renovation and overhauling of the ant? Mr. RUBEL. Installation of additional facilities, primarily attributle to the new demands for refrigeration and steam needed for coolg and heating the buildings on Capitol Hill, and for heating the

tanic Garden, Government Printing Office, and city post office.
Mr. ANDREWS. And the whole thing will cost how much?
Mr. RUBEL. It will eventually cost $6.5 million.
Mr. ANDREWS. And how much are you requesting be funded in the
19 bill?
Mr. HENLOCK. Nothing.
Mr. ANDREWS. There would be an unfunded balance of $635,000?
Mr. RUBEL. Yes, sir.

Ir. ANDREWS. You are not ready for that? Ir. HENLOCK. No, sir; we do not have to ask for that appropriation 5 year. We probably will have to ask for it in the fiscal year 1970. Statement furnished for the record :) nblic Law 85-895, 85th Congress, approved September 2, 1958, authorized directed the Architect of the Capitol, under the direction of the House Office ding Commission, to effect changes, improvements, and expansion in the lities of the Capitol Power Plant and its steam and chilled-water distribu

systems, necessary to provide steam and chilled water for the Rayburn se Office Building and for other improvements and projects then underway roposed, and authorized the appropriation of a total amount of $6,500,000 uch purpose.

At that time, six new construction projects were contemplated or in progress The Rayburn House Office Building, the cafeteria in the courtyard of the Lonsworth House Office Building, the garage in the courtyard of the Cannon Hoox Office Building, the new Senate subway transportation system, the House subway transportation system, and extension of the east central front of the Capitol and other changes and improvements authorized under the extension of the Capitol project. There was also contemplated replacement of the 60-year-old heating system in the Main Library of Congress Building with a new heating and air-conditioning system. More recently, two underground garages were con structed for the House of Representatives. Most of these improvements have now been completed.

In effecting the changes, improvements, and expansion in the Capitol Power Plant and its steam and chilled-water distribution systems, it has been deres sary to gear the same to the timetable under which the new projects have been accomplished. The Capitol Power Plant program has been geared accordingly and 85 percent of the work authorized by Public Law 85-895 has now been completed or placed under contract.

Improvements and changes effected, to date, have included the following: Two 1,100-ton refrigeration machines, complete with geared drives and 1,250-horse power electric motors, and two 2,200-ton refrigeration machines, complete with geared drives and 2,500-horsepower electric motors, have been installed at the Capitol Power Plant's refrigeration plant. Installation of these four machines has increased the capacity of the refrigeration plant from a total of 8,800 tons ta 15,400 tons.

As an adjunct to these installations, a three-cell cooling tower having a capacity equivalent to the condensing requirements of three 2,200-ton refrigeration machines was constructed on the Capitol Power Plant grounds.

An additional chilled-water pump of 9,800-gallons-per-minute capacity, having hydraulic characteristics identical with those of three existing chilled-water pumps, was installed at the plant. The four pumps now have a total pumping capacity of 39,200 gallons per minute at an imposed head of 245 feet of water

A dual piping system, consisting of one chilled-water supply main and one return main, was installed from the southeast corner of the Old Senate Ofice Building to the Senate terrace of the Capitol Building. This new section of chilled-water piping established a physical connection between previously serarate east and west distribution systems, thus providing a complete loop circuit from and to the Capitol Power Plant. This loop circuit has made possible a successful redistribution of the chilled-water supply to all buildings connected to the system—a compelling requirement brought about by the construction of the Rayburn House Office Building.

A new railroad siding has been constructed on the Virginia Avenue side of the Capitol Power Plant grounds. The new track system is designed to accommodate storage for eight 70-ton coal cars, while eight additional cars of like capacity can be delivered to or removed from the plant grounds. This new siding has sukstantially expedited the coal-handling process and has eliminated the frequen: car derailments and other hazards experienced with the old track system.

Four oil-fired steam generators, each having a capacity to produce 30.000 pounds of steam every hour, were installed at the plant. The addition of the oil-fired steam generators has increased the installed steam generating capacity of the Capitol Power Plant from 330,000 pounds per hour to 530,000 pounds pe hour,

Oil storage faciilties, installed at the plant, include two 10,000-gallon under ground steel tanks connected by a concrete tunnel to an underground concrete storage tank with sufficient capacity to store 200,000 gallons of fuel oil.

The antiquated coal-handling system, placed in operation in 1910 and designu to alternately deliver coal from the storage yard or track hopper to the end bunkers within the plant, was removed from service in the spring of 1965: was demolished, and replaced by a modern system of hoppers, inclined belt converar oil-fired car-thawing devices and a mechanical car shaker. The new systems capable of delivering variable quantities of coal up to approximately 200 ms maximum each hour from either a track hopper where coal is dumped from the cars, or from a coal-yard hopper in the storage yard; so that coal can position conveyed from the track hopper to the bunkers, from the track hopper to the storage yard, or from the storage yard to the bunkers through separate syste of inclined conveyor belts.

A contract was awarded in the fall of 1966 for accomplishing modifications and extensions to the portion of the west steam distribution system located under South Capitol Street, extending from Canal Street to Independence Avenue. Work under this contract was completed in December 1967.

A contract was awarded in March 1967 for the manufacture and delivery of a new water treatment plant, to be installed in the east side of the north boiler room under a contract yet to be awarded. Completion of this installation is scheduled for December 1968.

In addition to the contract for installation of the new water treatment plant, the principal improvements yet to be contracted are the modifications and extensions to the existing steam distribution systems authorized by Public Law 85– 895, including new steam service facilities and connections to the Capitol Building, via the west front grounds, and modifications to the piping systems serving the Government Printing Office and the City Post Office: also rehabilitation of the deteriorated cork insulation on the 24-inch pipes in the chilled water tunnel under South Capitol Street, and rehabilitation of the structural steel frames supporting the pipes in this tunnel. The rehabilitation of the cork insulation and rehabilitation of the structural frames in the South Capitol Street tunnel will be completed in March 1969.

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Total personnel compensation.
12.0 Personnel benefits.
25.1 Other services:

General annual repairs.. .
Annual painting..
Maintenance and repair, air-conditioning and refrigeration

systems....
Maintenance and repair, elevators....
Improved lighting, office areas, both buildings...
Equip part of bookstacks with map cases, annex.
Clean and restore ceiling decorations, main building-.--
Replacement of city water distribution system and sewer

and drainage systems serving the main and building
grounds.....

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