frequent car derailments and other hazards experienced with the old track system. A by-product of this improvement has been the release of an acre of plant property for future plant expansion, an area that was not previously available because of the unique layout of the old track system.

Four oil-fired steam generators, each having a capacity to produce 50,000 pounds of steam every hour, were accepted for use by the Government on March 3, 1966. The addition of these oil-fired steam generators increased the installed steam generating capacity of the Power Plant from 330,000 pounds per hour to 530,000 pounds per hour. Additionally, the capability of dual-fuel-plant operation provides the Government with security during emergencies arising from strikes or other stoppages in the oil, coal or transportation industries.

The completed oil storage facility for the Power Plant includes two 10,000gallon underground 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 concrete storage tank is situated at the extreme southwest corner of the Power Plant grounds. This site was selected to minimize truck delivery interferences with other Power Plant operations. The two 10,000-gallon steel tanks were ready for use by the Government on May 12, 1965 and the underground concrete storage tank was accepted for use on April 29, 1966.

The antiquated coal-handling system placed in operation in 1910 and designed to alternately deliver coal from the storage yard or track hopper to the coal bunkers within the plant was removed from service in the spring of 1965. It was immediately demolished and replaced by a modern system of hoppers, inclined belt conveyors, oil-fired car-thawing devices and a mechanical car shaker. This integrated system was accepted for use on December 28, 1965. The new coalhandling system is capable of delivering variable quantities of coal up to approximately 200 tons maximium each hour from either a track hopper where coal is dumped from the cars, or from a coal yard hopper in the storage yard. Consequently the coal can be 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 systems of inclined conveyor belts.

In the fall of 1966 a contract was awarded for accomplishing modifications and extensions to that portion of the west steam distribution system located under South Capitol Street, and extending from Canal Street to Independence Avenue. Work on this site now is in progress.

On March 22, 1967 contract No. ACpp-747 was awarded for the manufacture and delivery of a new water treatment plant to be installed in the east side of the north boiler rooms. Completion of this installatiotn is scheduled for January 1968.

Section C

Unfinished authorized work.—

(1) Water Treatment Plant

As mentioned in Section B hereof, a contract for manufacturing and delivering the water treatment plant equipment was awarded on March 22, 1967. An installation contract including general construction work, piping systems and installation of the manufactured equipment on order now is being prepared for issue to prospective bidders on or about July 1, 1967. It is expected that the new water treatment plant will be ready for tests in January 1968.

(2) Steam Distribution System

Additional modifications and extensions to existing steam distributions, including new steam service facilities and connections to the Capitol Building, via the west front grounds, are contemplated. Also some modifications to the piping systems serving the Government Printing Office and the City Post Office are to be accomplished under the provisions of Public Law 85-895.

The proposed new steam piping systems contemplated for installation in the west front grounds of the Capitol are closely related to the proposed reconstruction of the West Front of the Capitol. In fact it would be decidedly advantageous to have the work of both projects proceed cojointly to avoid unnecessary disturbance and expense. For this reason development of final plans for the new steam systems in the west grounds of the Capitol has been temporarily deferred pending final action by the Congress on the West Front Extension Project. Plans for the modifications to be made in the Government Printing Office tunnel are in the process of development.

(3) Reinsulation of Chilled Water Piping

The deteriorated cork insulation on the 24-inch pipes in the chilled water tunnel under South Capitol Street must be replaced. Rehabilitation of the structural steel frames supporting the pipes is a subsidiary facet of this project.

During the construction of the underground garages on Squares 637 and 691, a section of the concrete chilled water tunnel on South Capitol Street has been exposed to the elements, extreme dampness and other influences not conducive to the satisfactory replacement of the cork insulation on the pipes. For this reason this part of the work authorized by Public Law 85-895 has been deferred and will not proceed until all surrounding deleterious conditions are non-existent. Part IV (D)—Fiscal report

Funds for this project have been appropriated as follows: Supplemental Appropriation Act, 1959, Public Law 85-766, 85th Cong., approved Aug. 27, 1958-.

$750,000

Legislative Branch Appropriation Act, 1960, Public Law 86-176, 86th
Cong., approved Aug. 21, 1959---

2,500,000

Legislative Branch Appropriation Act, 1961, Public Law 86-628, 86th
Cong., approved July 12, 1960----

2,500,000

Total amount appropriated to date__.

Unappropriated contract authorization__--

Total authorization__--_.

An additional appropriation in the amount of $250,000 has been included in the 1968 budget submitted by the Architect of the Capitol.

5,750,000 750, 000

6, 500, 000

Pt. IV (E)--Professional service, supply and construction contracts authorized by Public Law 85-895