58 LAWS OF MARYLAND [CH. 29

through appropriations from the signatory bodies and the United
States, in the manner prescribed by the laws of the several signatory
bodies and of the United States, and in amounts [, ] as follows:

The prorata contribution shall be based on such factors as popula-
tion [; ], the amount of industrial and domestic pollution; and a flat
service charge [; ], as shall be determined from time to time by the
Commission, subject, however, to the approval, ratification and
appropriation of such contribution by the several signatory bodies.
[And, further provided, that the total of such sums from all signa-
tory bodies shall not exceed a total of thirty thousand dollars,
($30, 000) per annum. ]

ARTICLE [IV] V.

Pursuant to the aims and purposes of this compact, the signatory
bodies mutually agree:

1. Faithful co-operation in the abatement of existing pollution and
the prevention of future pollution in the streams of the Conservancy
District and in the planning for the utilization, conservation and
development of the water and associated land resources thereof.

2. The enactment of adequate and, insofar as is practicable, uni-
form legislation for the abatement and control of [such] pollution
and control and use of such streams.

3. The appropriation of [biannual] biennial sums on the propor-
tionate basis as set forth in Article [III] IV.

ARTICLE [V] VI.

This compact shall become effective immediately after it shall have
been ratified by the majority of the legislatures of the states of
Maryland and West Virginia, the commonwealths of Pennsylvania
and Virginia, and by the Commissioners of the District of Columbia,
and approved by the Congress of the United States; provided, how-
ever, that this compact shall not be effective as to any signatory body
until ratified thereby.

ARTICLE [VI] VII.

Any signatory body may by legislative [action] act, after one
year's notice to the Commission, withdraw from this compact.

SEC. 2. And be it further enacted, That this Act shall become
effective upon the adoption of substantially similar amendments to
the Interstate Compact by each of the signatory States to the
Compact, and upon the approval of the amendments to the Com-
pact by the Congress of the United States.

Approved March 2, 1960.