Expenditures and Obligations to date, under $30,600,000 appropriated for project

4 large centrifugal refrigeration machines having a total refrigeration capacity of 24,000 tons, including 4 pumpdown units and refrigeration receivers.

2,312,468

Contract for site preparation work for a new 24,000-ton Refrigeration Plant Building.

1,329,185

Contract for New Refrigeration Building, Operations Building, and North header tunnel.

5,719,965

Contracts for furnishing and delivering of structural steel, valves, piping system components, and chilled water and condensor pumps for the new Refrigeration Plant.....

2,556,548

Administration, blueprints, tests, surveys, central control systems, and other miscellaneous items..

Obligations remaining to be incurred

Work remaining to complete the project, in accordance with the Authorization Act, as well as a
statement of work contracted to date, is detailed on the following pages of this project report.
Phasing and Staging of Work

with the following projected schedule:
Work under the Modifications and Enlargement Project is being phased and staged in accordance

Phase I

Work under this Phase includes the following contracts:

-

Manufacture, delivery, and installation of 4 large centrifugal refrigeration machines having a total capacity of 24,000 tons, and 4 pump-down units and refrigeration receivers Contract awarded December 11, 1973; anticipated completion date for all acceptance. work under contract, June 1979, except final testing and

Manufacture, delivery, and installation of a cooling tower Contract awarded March 21, 1974; anticipated completion date except final testing and acceptance. for all work under contract, including installation, June 1979,

April 4, 1974; all work under contract now substantially completed.

Fabrication and delivery of structural steel for new Refrigeration Plant Building

Contract awarded December 2,

Piping system components for new Refrigeration Plant Contract awarded December 27, 1974; all work under contract now completed.

Electric motor-operated ball valves for new Refrigeration Contract awarded March 13, 1975; all work under

Plant

11

Site preparation work for a new 24,000 ton Refrigeration Plant Building Contract awarded July 10, 1974; all work under contract is now completed.

Construction of a new building to house a refrigeration plant of 24,000-ton capacity; construction of a new operations building for centralization and administration of control functions of both the new and existing refrigeration plants; installation of a tunnel across the north portion of the existing power plant site, for subsequent installation therein (under a separate contract) of a new underground chilled water "headering" system Contract awarded May 20, 1976; all work under contract now substantially completed.

-

Procurement and installation of mechanical and electrical equipment in new
Refrigeration Plant Building and in new North Header tunnel Contract awarded
July 13, 1977; tentative projected completion date September 1979. Work under
this phase is approximately 65% complete.

This project was authorized by Public Law 92-607, approved October 31, 1972, "Supplemental
Appropriations Act, 1973", which Act also provided an appropriation of $47,925,000 for the
project.

The 1973 Authorization Act was amended by Public Law 93-245, approved January 3, 1974,
"Supplemental Appropriations Act, 1974", which Act broadened the scope of the project;
increased the authorized limit of cost of the project by $20,900,000, from $47,925,000
to $68,825,000, and provided an additional appropriation of $20,900,000 for the project.
The 1973 Authorization Act, as amended, was further amended by Public Law 93-554, approved
December 27, 1974, "Supplemental Appropriations Act, 1975", which Act provided for further
project modifications and cost escalations; increased the limit of cost of the project by
$16,322,000, from $68,825,000 to $85,147,000, and provided an additional appropriation of
$16,322,000 for the project.

In summary, the total authorized and appropriated for the project to date, amounts to
$85,147,000.

Work under this project is progressing satisfactorily. The work, as the Committee has been
previously advised, has been planned to be performed in 6 phases. Work under Phase I,
contracted May 20, 1975, for construction of temporary vehicular and service access to
Dirksen Building, at a cost of $211,032, is completed. Work under Phase II, contracted
December 11, 1975, for excavations and foundations, is now completed, at a contract cost
of $5,745,554.

Competitive bids for Phase III were invited for the exterior stone for the Dirksen Building
Extension. Bids were opened January 13, 1977. Only one bid was received and that was from
the Vermont Marble Company, in the amount of $5,808,494. On February 9, 1977, contract in
that amount was awarded with approval of the Chairman of the Senate Office Building Commission.
The contract provides for completion of the work by December 31, 1978. Work under Phase III
is now 99% complete.