(3) by adding at the end the following: 
‘‘(2) FISCAL YEAR 2007 AND THEREAFTER.—
For fiscal year 2007 and each fiscal year thereafter, 
the Administrator shall reserve, before allotments to 
the States under section 604(a), not less than 0.5 
percent and not more than 1.5 percent of the funds 
made available to carry out title VI. 
‘‘(3) USE OF FUNDS.—Funds reserved under 
this subsection shall be available only for grants for 
projects and activities eligible for assistance under 
section 603(c) to serve—
‘‘(A) Indian tribes; 
‘‘(B) former Indian reservations in Okla-
homa (as determined by the Secretary of the 
Interior); and 
‘‘(C) Native villages (as defined in section 
3 of the Alaska Native Claims Settlement Act 
(43 U.S.C. 1602)).’’. 
TITLE V—STUDIES 
SEC. 501. STUDY OF LONG-TERM, SUSTAINABLE, CLEAN 
WATER FUNDING. 
(a) STUDY.—Not later than 30 days after the date 
of enactment of this Act, the Comptroller General shall 
commence a study of the funding mechanisms and funding 
sources available to establish a Clean Water Trust Fund.
(b) CONTENTS.—The study shall include an analysis 
of potential revenue sources that can be efficiently col-
lected, are broad based, are related to water quality, and 
that support the annual funding levels authorized by the 
amendments made by this Act. 
(c) CONSULTATION.—In conducting the study, the 
Comptroller General, at a minimum, shall consult with 
Federal, State, and local agencies, representatives of busi-
ness and industry, representatives of entities operating 
publicly owned treatment works, and other interested 
groups. 
(d) REPORT.—Not later than January 1, 2008, the 
Comptroller General shall submit to the Committee on 
Transportation and Infrastructure of the House of Rep-
resentatives and the Committee on Environment and Pub-
lic Works of the Senate a report on the results of the 
study. 
SEC. 502. FEASIBILITY STUDY OF SUPPLEMENTAL AND AL-
TERNATIVE CLEAN WATER FUNDING MECHA-
NISMS. 
(a) STUDY.—Not later than 30 days after the date 
of enactment of this Act, the Comptroller General shall 
commence a study of funding mechanisms and funding 
sources potentially available for wastewater infrastructure
and other water pollution control activities under the Fed-
eral Water Pollution Control Act (33 U.S.C. 1251 et seq.). 
(b) CONTENTS.—The study shall include an analysis 
of funding and investment mechanisms and revenue 
sources from other potential supplemental or alternative 
public or private sources that could be used to fund waste-
water infrastructure and other water pollution control ac-
tivities under the Federal Water Pollution Control Act. 
(c) CONSULTATION.—In conducting the study, the 
Comptroller General, at a minimum, shall consult with 
Federal, State, and local agencies, representatives of busi-
ness, industry, and financial investment entities, rep-
resentatives of entities operating treatment works, and 
other interested groups. 
(d) REPORT.—Not later than January 1, 2008, the 
Comptroller General shall submit to the Committee on 
Transportation and Infrastructure of the House of Rep-
resentatives and the Committee on Environment and Pub-
lic Works of the Senate a report on the results of the 
study. 
SEC. 503. GREAT LAKES WATER QUALITY. 
(a) STUDY.—The Administrator of the Environ-
mental Protection Agency, in consultation with the Sec-
retary of State and the Government of Canada, shall con-
duct a study of the condition of wastewater treatment fa-
cilities located in the United States and Canada that dis-
charge into the Great Lakes. 
(b) CONTENTS.—In conducting the study, the Ad-
ministrator shall—
(1) determine the effect that such treatment fa-
cilities have on Great Lakes water quality; and 
(2) develop recommendations—
(A) to improve water quality monitoring by 
the operators of such treatment facilities; 
(B) to establish a protocol for improved 
notification and information sharing between 
the United States and Canada; and 
(C) to promote cooperation between the 
United States and Canada to prevent the dis-
charge of untreated and undertreated waste 
into the Great Lakes. 
(c) CONSULTATION.—In conducting the study, the 
Administrator shall consult with the International Joint 
Commission and Federal, State, and local governments. 
(d) REPORT.—Not later than one year after the date 
of enactment of this Act, the Administrator shall submit 
to Congress a report on the results of the study, together 
with the recommendations developed under subsection 
(b)(2).
TITLE VI—TONNAGE DUTIES 
SEC. 601. TONNAGE DUTIES. 
(a) IN GENERAL.—Section 60301 of title 46, United 
State Code, is amended—
(1) in the section heading by striking ‘‘taxes’’ 
and inserting ‘‘duties’’; 
(2) by amending subsections (a) and (b) to read 
as follows: 
‘‘(a) LOWER RATE.—
‘‘(1) IMPOSITION OF DUTY.—A duty is imposed 
at the rate described in paragraph (2) at each entry 
in a port of the United States of—
‘‘(A) a vessel entering from a foreign port 
or place in North America, Central America, 
the West Indies Islands, the Bahama Islands, 
the Bermuda Islands, or the coast of South 
America bordering the Caribbean Sea; or 
‘‘(B) a vessel returning to the same port or 
place in the United States from which it de-
parted, and not entering the United States 
from another port or place, except—
‘‘(i) a vessel of the United States; 
‘‘(ii) a recreational vessel (as defined 
in section 2101 of this title); or 
‘‘(iii) a barge.
‘‘(2) RATE.—The rate referred to in paragraph 
(1) shall be—
‘‘(A) 4.5 cents per ton (but not more than 
a total of 22.5 cents per ton per year) for fiscal 
years 2006 through 2007; 
‘‘(B) 9.0 cents per ton (but not more than 
a total of 45 cents per ton per year) for fiscal 
years 2008 through 2017; and 
‘‘(C) 2 cents per ton (but not more than 
a total of 10 cents per ton per year) for each 
fiscal year thereafter. 
‘‘(b) HIGHER RATE.—
‘‘(1) IMPOSITION OF DUTY.—A duty is imposed 
at the rate described in paragraph (2) on a vessel 
at each entry in a port of the United States from 
a foreign port or place not named in subsection 
(a)(1). 
‘‘(2) RATE.—The rate referred to in paragraph 
(1) shall be—
‘‘(A) 13.5 cents per ton (but not more 
than a total of 67.5 cents per ton per year) for 
fiscal years 2006 through 2007; 
‘‘(B) 27 cents per ton (but not more than 
a total of $1.35 per ton per year) for fiscal 
years 2008 through 2017, and