IB 

Union Calendar No. 249 

111TH CONGRESS 

2D SESSION H. R. 4252 

[Report No. 111–433] 

To direct the Secretary of the Interior to conduct a study of water resources 

in the Rialto-Colton Basin in the State of California, and for other purposes. 

IN THE HOUSE OF REPRESENTATIVES 

DECEMBER 9, 2009 

Mr. BACA (for himself and Mrs. NAPOLITANO) introduced the following bill; 

which was referred to the Committee on Natural Resources 

MARCH 11, 2010 

Committed to the Committee of the Whole House on the State of the Union 

and ordered to be printed 


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•HR 4252 RH

A BILL 

To direct the Secretary of the Interior to conduct a study 

of water resources in the Rialto-Colton Basin in the 

State of California, and for other purposes. 


srobinson on DSKHWCL6B1PROD with BILLS
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•HR 4252 RH

1 Be it enacted by the Senate and House of Representa2 tives of the United States of America in Congress assembled, 

3 SECTION 1. SHORT TITLE. 

4 This Act may be cited as the ‘‘Inland Empire Per5 chlorate Ground Water Plume Assessment Act of 2009’’. 

6 SEC. 2. RIALTO-COLTON BASIN, CALIFORNIA, WATER RE7 SOURCES STUDY. 

8 (a) IN GENERAL.—Not later than 2 years after funds 

9 are made available to carry out this Act, the Secretary 

10 of the Interior, acting through the Director of the United 

11 States Geological Survey, shall complete a study of water 

12 resources in the Rialto-Colton Basin in the State of Cali13 fornia (in this section referred to as the ‘‘Basin’’), includ14 ing— 

15 (1) a survey of ground water resources in the 

16 Basin, including an analysis of— 

17 (A) the delineation, either horizontally or 

18 vertically, of the aquifers in the Basin, includ19 ing the quantity of water in the aquifers; 

20 (B) the availability of ground water re21 sources for human use; 

22 (C) the salinity of ground water resources; 

23 (D) the identification of a recent surge in 

24 perchlorate concentrations in ground water, 

25 whether significant sources are being flushed 


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1 through the vadose zone, or if perchlorate is 

2 being remobilized; 

3 (E) the identification of impacts and 

4 extents of all source areas that contribute to 

5 the regional plume to be fully characterized; 

6 (F) the potential of the ground water re7 sources to recharge; 

8 (G) the interaction between ground water 

9 and surface water; 

10 (H) the susceptibility of the aquifers to 

11 contamination, including identifying the extent 

12 of commingling of plume emanating within sur13 rounding areas in San Bernardino County, 

14 California; and 

15 (I) any other relevant criteria; and 

16 (2) a characterization of surface and bedrock 

17 geology of the Basin, including the effect of the geol18 ogy on ground water yield and quality. 

19 (b) COORDINATION.—The Secretary shall carry out 

20 the study in coordination with the State of California and 

21 any other entities that the Secretary determines to be ap22 propriate, including other Federal agencies and institu23 tions of higher education. 

24 (c) REPORT.—Upon completion of the study, the Sec25 retary shall submit to the Committee on Energy and NatVerDate Nov 24 2008 23:13 Mar 11, 2010 Jkt 089200 PO 00000 Frm 00004 Fmt 6652 Sfmt 6201 E:\BILLS\H4252.RH H4252

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1 ural Resources of the Senate and the Committee on Nat2 ural Resources of the House of Representatives a report 

3 that describes the results of the study. 


srobinson on DSKHWCL6B1PROD with BILLS
Union Calendar No. 249 

111TH CONGRESS 

2D SESSION H. R. 4252 

[Report No. 111–433] 

A BILL 

To direct the Secretary of the Interior to conduct 

purposes. Basin in the State of California, and for other a study of water resources in the Rialto-Colton 

MARCH 11, 2010 

Committed to the Committee of the Whole House on the 

State of the Union and ordered to be printed 


srobinson on DSKHWCL6B1PROD with BILLS