I 
111TH CONGRESS 
1ST SESSION H. R. 2316 
To direct the Secretary of the Interior to conduct a study of water resources 
in the State of California, and for other purposes. 
IN THE HOUSE OF REPRESENTATIVES 
MAY 7, 2009 
Mr. BACA (for himself and Mrs. NAPOLITANO) introduced the following bill; 
which was referred to the Committee on Natural Resources 
A BILL 
To direct the Secretary of the Interior to conduct a study 
of water resources in the State of California, and for 
other purposes. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Inland Empire Per-
chlorate Ground Water Plume Assessment Act of 2009’’. 
SEC. 2. INLAND EMPIRE WATER RESOURCES STUDY. 
(a) IN GENERAL.—Not later than 2 years after funds 
are made available for this Act, the Secretary of the Inte-
rior, acting through the Director of the United States Geo-
logical Survey (referred to in this Act as the ‘‘Secretary’’), 
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in coordination with the State of California (referred to 
in this Act as the ‘‘State’’) and any other entities that 
the Secretary determines to be appropriate (including 
other Federal agencies and institutions of higher edu-
cation), shall complete a study of water resources in the 
State, including— 
(1) a survey of ground water resources, includ-
ing an analysis of— 
(A) the delineation, either horizontally or 
vertically, of the aquifers in the Rialto-Colton 
basin within the State, including the quantity of 
water in the aquifers; 
(B) the availability of ground water re-
sources for human use; 
(C) the salinity of ground water resources; 
(D) the identification of a recent surge in 
perchlorate concentrations in ground water, 
whether significant sources are being flushed 
through the vadose zone, or if perchlorate is 
being remobilized; 
(E) the identification of impacts and 
extents of all source areas that contribute to 
the regional plume to be fully characterized; 
(F) the potential of the ground water re-
sources to recharge; 
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(G) the interaction between ground water 
and surface water; 
(H) the susceptibility of the aquifers to 
contamination, including identifying the extent 
of commingling of plume emanating within sur-
rounding areas in San Bernardino County, 
California; and 
(I) any other relevant criteria; and 
(2) a characterization of surface and bedrock 
geology, including the effect of the geology on 
ground water yield and quality. 
(b) STUDY AREAS.—The study carried out under 
subsection (a) shall include the Rialto-Colton Basin in the 
State. 
(c) REPORT.—Not later than 2 years after funds are 
made available for this Act, the Secretary shall submit to 
the Committee on Energy and Natural Resources of the 
Senate and the Committee on Natural Resources of the 
House of Representatives a report that describes the re-
sults of the study. 
Æ 
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