799 



ever, That any such lands which are presently 

 owned by the State of Arona may be acquired or 

 exchanged for Federal lands. 



(3) Any lands removed from the Jurisdiction of 

 the Yuma Mesa Irrigation and Drainage District 

 pursuant to clause (2) of this subsection which 

 were available for use under the Gila Reauthor- 

 ization Act, shall be replaced with like lands 

 within or adjacent to the Yuma Mesa division of 

 the project. In the development of these sub- 

 stituted lands or any other lands within the Gila 

 project, the Secretary may provide for full utiliza- 

 tion of the Gila Gravity Main Canal In addition 

 to contracted capacities. 



(b) The cost of work provided for in this section, 

 Including delivery of water to Mexico, shall be non- 

 reimbursable; except to the extent that the waters 

 furnished are used In the United States. (Pub. L. 

 93-320. title I, § 103, June 24. 1974, 88 Stat. 269.) 



§ 1574. Modification of projects. 



The Secretary Is authorized to provide for modifi- 

 cations of the projects authorized by this sub- 

 chapter to the extent he determines appropriate for 

 purposes of meeting the international settlement 

 objective of this subchapter at the lowest overall 

 cost to the United States. No funds for any such 

 modification shall be expended until the expiration 

 of sixty days after the proposed modification has 

 been submitted to the appropriate committees of 

 the Congress, unless the Congress approves an ear- 

 lier date by concurrent resolution. The Secretary 

 shall notify the Governors of the Colorado River 

 Basin States of such modifications. (Pub. L. 93-320, 

 title I, § 104, June 24, 1974, 88 Stat. 270.) 



§1575. Contract authority. 



The Secretary Is hereby authorized to enter into 

 contracts that he deems necessary to carry out the 

 provisions of this 'subchapter in advance of the ap- 

 propriation of funds therefor. (Pub. L. 93-320, title 

 I, § 105, June 24, 1975, 88 Stat. 270.) 



§ 1576. Interagency cooperation. 



In carrying out the provisions of this subchapter, 

 the Secretary shr.ll consult and cooperate with the 

 Secretary of State, the Administrator of the Eln- 

 vlronmental Protection Agency, the Secretary of 

 Agriculture, and other affected Federal, State, and 

 local agencies. (Pub. L. 93-320, title I. § 106, June 24, 

 1974, 88 Stat. 270.) 



§ 1577. Existing Federal laws not modified. 



Nothing in this chapter shall be deemed to modify 

 the National Environmental Policy Act of 1969, the 

 Federal Water Pollution Control Act, as amended, 

 or, except as expressly stated herein, the provisions 

 of any other Federal law. (Pub. L. 93-320, title I, 

 § 107, June 24, 1974, 88 Stat. 270.) 



§ 1578. Authorization of appropriations. 



There Is hereby authorized to be appropriated the 

 sum of $121,500,000 for the construction of the works 



and accomplishment of the purposes authorized in 

 sections 1571 and 1572 of this title, r-nd $34,000,000 

 to accomplish the purposes of section 1573 of this 

 title, based on April 1973 price.';, plus or minus such 

 amounts as may be justified by reason of ordinary 

 fluctuations in construction costs involved therein, 

 and such sums as may he reouired to operate and 

 maintain such works and to provide for such modifi- 

 cations as may be made pursuant to section 1574 of 

 this title. There is further authorized to be a-ipro- 

 priated such sums as may be necessary to my con- 

 demnation awards In excess of appraised values and 

 to cover costs required In connection v.-ith the Uni- 

 form Relocation As.'^istance and Real Property Ac- 

 quisition Po'icies Art of 1970. (Pub. L. 93-320, title I, 

 « 108, June 24. 1974, 88 Stat. 270.) 



SUBCHAPTER II.— MEASURES UPSTREAM- 

 FROM IMPERIAL DAM 



§ 1591. Implfmentation of salinity control policy. 



(a) The Secretary of the Interior shall implement 

 the salinity control policy adopted for the Colorado 

 River in the "Conclusions and Recommendations" 

 published in the Proceedings of the Reconvened 

 Seventh Session of the Conference in the Matter of 

 Pollution of the Interstate Waters of the Colorado 

 River and Its Tributaries in the States of California, 

 Colorado, Utah, Arizona, Nevada, New Mexico, and 

 Wyoming, held in Denver, Colorado, on April 26-27, 

 1972, under the authority of section 1160 of Title 33, 

 and approvpd by the Administrator of the Environ- 

 mental Protection Agency on June 9. 1972. 



(b) The Secret iry is hereby directed to expedite 

 the investisration. planning, and implementation of 

 the salinity control program generally as described 

 In chapter VI of the Secretary's report entitled, 

 "Colorado River Water Quality Improvement Pro- 

 gram, February 1972". 



(c) In conformity with subsection (a) of this sec- 

 tion and the authority of the Environmental Pro- 

 tection Agency under Federal laws, the Secretary, 

 the Administrator of the Environmental Protection 

 Agency, and the Secretary of Agriculture are di- 

 rected to cooperate and coordinate their activities 

 eflfectively to carry out the objective of this sub- 

 chapter. (Pub. L. 93-320, title H, § 201, June 24, 

 1974, 88 Stat. 270.) 



§1592. Authorization to construct, operate, and main- 

 tain salinity control units. 



The Secretary is authorized to construct, operate, 



and maintain the following salinity control units as 



the initial stage of the Colorado River Basin salinity 



control program. 



'D The Paradox Valley unit. Montrose County, 

 Colorado, consisting of facilities for collection and 

 rUsi^osition of saline ground water of Paradox Valley, 

 includi Tg wells pumps, pipelines, solar evaporation 

 ponds, ar.d all necpssary appurtenant and associated 

 works such as roads, ferxes, dikes, power transmis- 

 sion facilities and permanent operating facilities. 



(2) The Grand Valley unit, Colorado, consisting 

 '^f measures and all necessary appurtenant and as- 



