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Page 1: Title I Program Colorado River Basin Salinity Control Act · Title I Program Colorado River Basin Salinity Control Act Report to the Secretary of the Interior and the Congress Bureau

Title I Program Colorado River Basin Salinity Control Act

Report to the Secretary of the Interior

and the Congress

Bureau of Reclamation Lower Colorado Region

Boulder City, Nevada June 1992

Page 2: Title I Program Colorado River Basin Salinity Control Act · Title I Program Colorado River Basin Salinity Control Act Report to the Secretary of the Interior and the Congress Bureau

Title I Program Colorado River Basin Salinity Control Act

Reporf to the Secretary of the Interior

and the Congress

Bureau of Reclamation Lower Colorado Region

June 1992

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CONTENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Executive summary ES-1

Chapter I . Introduction Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Previous Title I reports 2

Chapter I1 . Title I history and provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Title I history 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Title I provisions 5

Chapter I11 . Title I works and capital costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yuma Desalting Plant 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Design considerations 7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Process selection 7 . . . . . . . . . . . . . . . . . . . . . . . . . . Sizing and performance 8

. . . . . . . . . . . . . . . . . Description of the YDP and desalting process 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Powersource 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Early studies 11 . . . . . . . . . . . . . . . . . . . . . . . . Current power arrangement 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ongoing studies 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status 12

. . . . . . . . . . . . . . . . . . WMIDD irrigation drainage reduction program 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . Acreage reduction program 13

. . . . . . . . Wellton-Mohawkirrigation efficiency improvement program 13 . . . . . . . . . . . . . . . . . . . . . . Onfarm improvements program 13 . . . . . . . . . . . . . . . . Irrigation Management Services program 13

. . . . . . . . . . . . . . . . . . Research and demonstration program 13 . . . . . . . . . . . . . . . . . . . Education and information program 14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Federal cost share 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Results 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status 14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Coachella Canal lining 15 . . . . . . . . . . . . . . . . . . . . . . Protective and Regulatory Pumping Unit 16

. . . . . . . . . . . . . . . . . . . . . . . . Fish and wildlife mitigation measures 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Title I capital costs 17

Chapter IV . Cost of desalted water and YDP cost reduction program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cost of desalted water 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Annual YDP operations costs 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YDP cost reduction program 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increased membrane life 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment monitoring 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . New technologies 23

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CONTENTS

Page

Chapter IV . Cost of desalted water and YDP cost reduction program-+ ontinued . . . . . . . . . . . . . . . . . . . . . . . . . . New pretreatment processes 23

. . . . . . . . . . . . . . . . . . . . . . . . . . . Desalted water marketing 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sludge marketing 24

. . . . . . . . . . . . . . . . . . . . . . . . . . New membrane technologies 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technicalreview 24

. . . . . . . . . . . . . . . . . . . . . . . . . . Recalcining and cogeneration 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Implementation 25

Chapter V . Ability of Title I to support program objectives . . . . . . . . . . Supporting the primary objective before completion of the YDP 27

. . . . . . . . . . . Supporting the primary objective in the future with the YDP 27 . . . . . . . . . . . . . . . . . . . . . . Previous replacement water studies 29 . . . . . . . . . . . . . . . . . . . . . . Ongoing replacement water studies 30

. . . . . . . . . Supporting the primary objective in the future without the YDP 30 . . . . . . . . . . . . . . . . . . . . . . . . . Effect on relations with Mexico 31

. . . . . . . . . . . . . . . . . . Advancing United States desalting technologies 31 . . . . . . . . . . . . . . . . . . . . . . Previous research and development 31 . . . . . . . . . . . . . . . . . . . . . . Ongoing research and development 32

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technology transfer 33

Chapter VI . Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . Need for and benefits of the YDP 35

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Future activities 35 . . . . . . . . . . . . . . . . . . . Power source for the YDP and the PRPU 35

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YDP startup schedule 35 . . . . . . . . . . . . . . . . WMIDD irrigation drainage reduction program 36

. . . . . . . . . . . . . . . . . . . . . . . . . . YDP cost reduction program 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . Reject stream replacement 36

. . . . . . . . . . . . . . . . . . . . . . Vegetation management study 36 . . . . . . . . . . . . . . . Lower Colorado River storage investigation 36

. . . . . . . . . . . . . . . . . . . . . . Research and development program 36

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CONTENTS

TABLES

Page Number

1. Federal cost share . . . . . . . . . . . . . . . WMIDD irrigation drainage reduction program 14

2. Capital costs: Colorado River Basin Salinity Control Project, Title1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3. Cost of desalted water (October 1992 prices) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yuma Desalting Plant 20

4. Yuma Desalting Plant . . . . . . . . . . . . . . . . . . . . . . . operation and maintenance costs 22

FIGURES

. . . . . . . . . . . . . . . . . 1. Yuma Desalting Plant water flow schematic 10 . . . . . . . . . . . . . . . 2. Variations in annual YDP typical operating costs 22 . . . . . . . . . . . . . . . 3. Annual flow-weighted salinity at Imperial Dam 28

4. Annual salinity differential Northerly International . . . . . . . . . . . . . . . . . . . . . . . . . . . Boundary-Imperial Dam 28

. . . . . . . . . . . . . . . . . . . . . 5. Action plan for future Title I activities 38

PHOTOGRAPHS

. . . . . . . . . . . . . . . . . . . . . . . . . 1. Yuma Desalting Plant complex 7 2. Operators load reverse osmosis desalting element into 12-inch

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pressure vessel 9

APPENDIXES

A. Public Law 93-320, Colorado River Basin Salinity Control Act, and Public Law 96-336, Amend Colorado River Basin Salinity Control Act; Amend Small Reclamation Projects Act

B. Minute No. 242 C. Possible Solutions to the Salinity Problem D. July 1973 Letter to President from Basin States Representatives

.,. lll

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color map

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cost of the recovered

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techniques to recycle the

(potential annud savings

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The water ~ 3 1

d% times.

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Colomdo River Basin Salini

o Ricer Basin Salin Projed, Backgroand Plan an Report, J a n u a ~ j 11979, Unite Department of the Interior,

eelamation.

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water.

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nswe that water users, 1 governments &I the

e some action to protect s o resources don

esponsibili~y for replacing water as desalting plant reject stream.

alinity of the Colora

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The United States w

near San Luis

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s report sn the

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propose ( 3 ) rn test prets

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resources are not pie capability may be a%- that could meet PEP!. Interconnected private uti%kies are pwsuing additional interconnections with

exico t o purchase, sell, m power.

relizibility? control costs, more versatile power market.

all interconnecked utilities era] power system for

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tio Research and demonstrations

wean of Reclamation

ducation on imigation eEciency

activities Administrative costs

effect relation-

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xecute letter sf a respo-nsibilities of dl agencies imxdaaed,

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authorized the con

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t s were made t o @ In Galif~rnki, several tracts of land

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t s used reverse osmosis t o

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t cost

Investmezxt cost

72.4 mi1Srio~ gd%ons 68,500 ame-feet 78,500 acre-&$.

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w e We-cycle costs,

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Future 1 fi2E

Xor,ccr,tra& costs $ 3.5 $ 3.5 $ 3.5 $ 3.5 $ 3.5 Sewice contracts 5.6 5.6 E.6 6.6 6.6 Equipmen"Lrsp1acentenS and mo&ficsticm 0.0 1.0 1.8 2.9 3.0 Membranes '2.6 '2.6 '2.6 '2.6 6.0 Powx and chemicals 0.8 0.8 3.7 10.9 10.9 Sludge disposal ' 0.0 '0.0 '8.0 ' 0.0 3.0

1 Total $13.5 $17.2 $25.7

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1 mes when there e Im water for the a t dco.

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a coast.

canal.

ter is no en

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Considerations,"')

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" Develop sumogate water quality measurements.

* Develop innovative disposal techniqzes for aents, including dud

stream

* Develop techniques to minimize bMyproducts and waste.

nvestigate techniques to increase recovery of the reject stream.

nvestigate uses for

Redmation has actively

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D production thm @ Evaluate ($echni-sica% r e v i e w appropriations allow. plmt operations and recornme

dgets fm- 1994-96 are preliminaw an 11 compete with other pmgmm needs.)

Continue to evaluate possible causes of

control t e s t

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nal beard ko review e

h evelopment needs and accomplishments.

Demonstrate membrane storage

Investigate eablyzed chlox-ine at membranes. @

opt new measm-ement 'a

Advance reeaveq- o f treatment chemicals

es to kcrease recovery

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Sonsnw emrg). cenwmalo- CSFCI*~ O use a a S q m e e wca a d ipbm: c o ~ b w -&kwres

F m a :wmce~ rmew cornmw go eta&&@ D e P f cpwabens and mcernmcdea &iiica@ona

LOad WrnMea

WYIBD IRRWABBH Somnw M &&at

Crsate fund~g a d P e d m site W&

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eplaeernent of the reject stream fro= the desaltin of any Wellton-&lohawk drainage water bypassed to ?he Santa Clara Slough to accomplish essential operation exc t a t such times when there exists surp%us water of the Colorado ver under %he terms of the Mexican Watep. Treaty of 1944, is recognized a s a national

vided in seetion o$ the Colorado River Stat, 895). Stud to identify feasible me

be) Any desalted water not needed for the purposes of this title

Replace~ent w a t e r ,

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across t he bypass drain shal: constitute fn l l and t o said tr ibe for the rights-of-w bypass drain asid electrical "em by this title.

Sec, 103. (a) The Seere r y is authorized to: ; I ) Zons"L.-uet. operate, and maintain, consistent nute

So. 242, well fields capable of furnishing appro one h ~ n d r e d and sixty thousand acre-feet of water per year or use in the United States and fof. de%iveqq to Mexico in satisfaction of

( 3 ) Any lands r Mesa Irrigation a n

tion Control Act, a s a

59 S t a t . 7219, Land Acquisition,

Lawd replacern

n t r a c t a u t h o r i t y ,

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June 24 ASIE CONTROL

. - Sec. 108. There rs cereby autHaoP.zed ta be approp~ia tec l the scrx . ~ ~ o p ~ o ~ r i s , t i ~ f l .

of 8121,500,000 f o r the construction of the works and accomplishmmt 43 US:: 7 578 a sf the pwposes authorized i n seetiions POI and 102, and $34,900,060 t o accompiis3 "ie pz?po%s of secticn 103, based on .April 1973 prices, plus or minus s ~ c k aracufita as may be j~st,bfib3d by reason of a r - Ginary f luctua&ims bz conseruction costs involved therein, and such szms as may be required t o operate a ~ d maintain such works and to provide for sucn modifications as may be made pursuant t o sect ion 104, Tkere is faarther alatkorized to be appropr ia tes such sums as

y be necessary t o pay condemnaelo~ awards in excess of appraised values and to ocove? costs required in connection with " b e Uniform Relocation A s s i s t a ~ c e and Reai Property Acquisition PaHieiea Act of 3970 (Public Law 9G-646:.

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PENDIX

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SMALL RECLA 32

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Mexico, D . F . , * -

August 33, 19-73

The Corx iss ion met a t t h e S e c r e t a r i a t of Foreign Relatkons, a t Mexico, 3.F,, a t 5 : Q Q p.m. on Augcst 3 0 , 9913, pursuant t o t h e i n s t r u c t i o n s ~ e c e i v e d by t h e two C o n d s s i o n e r s gram t h e i r r e s p e c t i v e G o ~ e r r ~ ~ i e n t s , i c c r d e r t o i nco rpo ra t e i n a Minute of t h e Coxmission t h e j o i n t r e c o ~ m e n d a t i o n s which were made t o t h e i r r e s p e c t i v e P r e s i d e n t s by t h e Spec i a l Rep re sen t a t i ve o f P re s iden t Richard Nixon, a s s a c k r Herbert nd t h e S e c r e t a r y of Foreign RelatSons of Mexi Lic . Emilio 0 . which have been approved by t h e P re s iden t s , f o r a pemanen t a i v e s o l u t i o n of t h e i n t e r n a t i o n a l problem of t h e s a l i n S t y of t h e Colorado River , r e s u l t i n g from t h e n e g o t i a t i o n s which they , and t h e i r t e c h n i c a l and j u r i d i c a l a d v i s e r s , he%& i n June, J u l y and Augrast of 1973, i n coxpl iance with t h e r e f e r e n c e s t o t h i s

t ter conta ined i n t h e Zoint C o m u n i g e of P r e s i d e n t s Xichard Mixon and Luis h e v e r r i a of June 1 7 , 1972,

Accordingly, t h e Cormissfon submits f o r t h e approva l of t h e two Goverm~ents t h e fo l lowing

RESOLUTION:

1. Refe r r ing t o t h e annual volume of Colorado River waters guaran teed t o Mexico under t h e Trea ty of 5944, of 1,5O0,O00 ac re - f ee t 61,856,234,OOO cuSic meters) :

S t a t e s s h a l l ado t measures t o a s s u r e t h a t n o t an January 1, 197 and no i a t e ~ t h a n J u l y 1, 9974,

t h e app rox iqa t e ly 1,360,000 a c r e - f e e t ( f , 6 ? % , 545,O r e d t o Mexico upstream of More

of no more t han 115 pepam. Mexican c o lorado River wa

t h e unde r s t and i vered t o Mexico under

r i c a n Canal s h a l l i v e r e d upstream of Morelos Ba

b ) The United S t a t e s %l cont inue t o e l i v e r ts Mexico on l and boundary a t Luis and i n th l i ~ ~ i t r o p h e s e c t i o n

e Colorado Wive ownstream f m m Morelos Dam apprsxLsaa 0,0 0 0 acre-f eet 72,68 9 , 0 0 0 c u b i c meters) annual%

s t a n t i a l l y t h e s a s t h a t of the waters

a s e i n d e l i v e r i e s under poSwt 1 (b) w i l l be m G e up a l i n c r e a s e i n d e l i v e r i e s under p o i n t 1 ( a ) ,

er s u b s t a n t i a l ehan es i n t h e aforementioned v o l of water a% t h e l o c a t i o n s must be a r&xl t o by t

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2 . The life of Mincte No. 2 4 1 s h a l l be & e m h a t e d upon approva l of t h e p re sen t Minute. From S e p t e ~ b e r 1, 1933, ~ ~ $ 2 1 t h e p r e v i s k m s of point 2 { a ) became e f f e c t i v e , $he United S t a t e s s h a l l

s gLo t h e Colorado Xiver downs-lream f r o m Mozelos Dam volfizes of d r a inage waters Era3 t3e Well"Lorz-Eohawk D i s t r i c t a t t h e annua l r a t e of 1$8,600 ac re - f ee t 1245 ,552 , C80 cub ic x e t e r s ) and s u b s t i e u t e t h e r e f o r an e q ~ a l volume of ocher waters t o be d ischarged t o $he Colorado River above Morslos Dam; and pursuan% to t h e d e c i s i o n s f Pzesident Echeverr ia expressed i n t h e Jo in% C o r n u n i q ~ e of June 17, 1992, t h e Unhted States s h a l l d i s c h a r t h e Colorado Rive: downstream from Mtozeloa Earn t h e d r a i ~ a g e waters @f t h e Webaton-Mohawk D i s t r i c t t haz do riot foAm s p a r t of t h e vtolwes of e r a inage waters r e f e r r e d t o above, wi th t h e underszanding t h a t t h i s zena in ing volune w i l l no t be r ep l aced by s u b s t i t u t i o n waters . The Conmission s h a l l con t inue t o a f o r t h e d r a i m g e waters d i scharged below Morelos Daz a s t h o s e d e s c r i b e d i n t h e p rov i s ions of A r t i c l e 10 of t h e Water Trea ty of Febrnary 3, 1 9 4 4 .

3 . A s a p a r t of t h e roeasures r e f e r r e d t o i n p o i n t 1 ( a ) , t h e Unite ll extend i n i t s t e r r i t o r y t h e conc re t e - l i ned Wellton- a s s d r a i n from Morelos Dan t o t h e Arizona-Sonora

and ope ra t e and main ta in t h e p o ~ t i o n s of a s s d r a i n l o c a t e d i n t h e United S t a t e s .

4 . To complete t h e d r a i n r e f e r r e d t o i n p c i n t 3, Mexico, through t h e Commission and a t t h e expense of t h e United S t a t e s , s h a l l c o n s t r u c t , o p e r a t e and main ta in an ex t ens ion of t h e concre te - l i n e d bypass d r a i n from t h e Ariztona-Sonora i n t e r n a t i o n a l boundary t o t h e Santa C la ra Slough of a c a p a c i t y of 353 cub ic f e e t

co s h a l l perrnit t h e Uni te a i n t o t h e Santa C la ra So awk d ra inage waters , t h e

volumes of b r i n e from such d e s a l t i n g o p e r a t i o n s i n t h e Uni te S t a t e s a s a r e c a r r i e d ou t t o implement t h e Resolu t ion of t h i s Minute, and any o t h e r volumes of b r i n e which Mexico may ag ree t o a c c e p t , It i s understood t h a t no r a d i o a c t i v e m a t e r i a l o r nuc l ea r wastes s h a l l be d i s cha e d through t h i s r a i n , and t h a t t h e Uni ted S t a t e s s h a l l ac i re no r i g h t t o a v i g a t i o n , s e r v i t u d e easement by of t h e d r a i n , nor o t h e r l e r i g h t s , exce in t h i s p o i n t ,

t h e conc lus ion y t h e Governments of t h e Uni ted and Mexico of a co n s i v e agreement on groundwater i

o r d e r a r e a s , each count ry s h a l l l i m i t mping of groundwaters i n i t s t e r r i t o r y w i th in f i v e miles ( e i g h t i l o m e t e r s ) of t h e

a r y n e a r San Luis $0 16Q10C0 acre-fee$ eters) annua l ly ,

With t h e o b j e c t i v e of avoid ing f u t u r e p r o b l e ~ ~ d , t h e Uni ted S t a t e s and Mexico sha l l . consu l t %$h each o t h e r r i ~ r t o under tak ing any

n e n t of e i t h e r t h e s u r f a c e o r t h e groun resources , o r under tak in s u b s t a n t i a l mod i f i ca t i on

n t s , i n its o m e r r i t o r y i n t h e box a f f e c t t h e o t h e r count ry .

7, The United S t a t e s upport e f 5 a r t y Mexico t o obzafn r i a t e $ i n a m f a v o r a b l e te f o r t h e hhgrcvemewt an

r e h a b a l i t a t i s n of x i c a l i Val ley a l s o provick non-r s a b l e a ~ ~ i s t a n c e oa a b a s i s mutua l ly

9e to both esunzxfes exc,zsivel

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~exiean ~ehabilitatia~ program of the Mexicali Valley relating to A * ,fie salf~ity problem, incl~ding tile drainage. In order $o corkply with the above mentioned purposes, both cc-mtries will underLake wegotiatisi-s as soon as pcssible,

3 , The Ucited S ates and Mexico shall recoqnize the undeztakin understandin s contained in this Resolution as co~stitu%ing pemacent and definitive soiution of the salinity prcblem refezred to in the Jcint Corzxunicpe of President Richax& Nixon and President Scis Eeheverria dated June 17, 2952.

9, The measures repired to impleme~t this Resoluzion shall be undertaken aw coqLeted at the earliest practical date.

This Minute is sub jec t to the expz-esa approval sf bath G ~ ~ e r ~ m e ~ t ~ b exchange of Notes. It shal: eater in.eo force upon such app oval; provided, hcwever, that the provisions which are dependent for their implem?nt%eicn on the construction of works or on other naeasures which recpire expenditure of fund by the United States, shall become effective upon the notification by the United States to Mexico of the authorization

ates Congress 3f said funds, which will be

Thereupon, the meeting adjourned,

Comissioner af the United States

Commissioner of Fexico

Secretary of the United States Section

eeretary of the Mexican Section

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I n the ccurse of Mr. x - ~ w n e l l ' s investigation, numerous possible s o % u t i o w s to t h e s a l i n i t y problem w e e c o n s i d e r e d , -anging f rom p r o j e c t t h i r m e d i a t

r o j e c t s whose f e a s i t y had n o t f e l t t h a t sam t h e s e options could

i o n w i t h others an e d an approach t o

ombine s e v e r a l teehni any new a g r e e en% t h a t m co would i n c l u

S t a t e s t o d e l i v e r Colorado R i v e r r e s c r i b e d a n n u a l i t y of t h e Colorado

R i v e r w a t e r s t h a t a r Wi th in t h i s f rame f r e f e r e n c e , ty of the Unite t a t e s , by a n h t f u l f i l l any new

o b l i g a t i o n s .

al s o l u t i o n s t h a t were c o n s i

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:w general terms, all sf the desalting paan$ options had t h e distinct advantage of conserving water resszrces an they h e l d a special appeal fcr the Colorado River 3 states, given the scarcity 0% waker fn the general Hcwever, in all eases, desalting pla ts presented t

isposal sf the problem of arranging for a s ~ i is prsdzeed as a necessary par e operation, Accordingly, various forms sf isposal were analyzed from an envircnmental as well as eecncsic s andpoine and, on balancing the options, it appeared %ha% dis asal with Kexican cs~sact via a drain to $he Santa Clara most attractive alternative,

in which higher q u a l i t y waters ellton-Mohawk return flows. ID all

waters were the substitute su either directly or as available, due to water savin including canal lining and exchange agreements. In these eases, the ermanence of the solution becane

stionable as projections of future development were za compared with allocations.

o eases eonsi e shutdown of the Ilton-Mohawk istri@t. This wouk

an the river saliwi but had serious

rather $ha2 a e salinity pro

Mexico. The

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It was concluded fron tke results of the systematic and e$ailed skudy whit" Eke Ta Force gave +-he salinity

problem that a permane~t s o l ~ t b o n to " & - L ~ L ~ probhex e~uPd not nxiediately r wi. t h o u t . significant COStS in water or o t h , En a potentially over-alloca$ad basin,

soiutions requiring significa ftures cf water were considered less favcrable, an advised that they would not accept any sol Colorado River Basin water resources. It was, and is, zeca~nized that perman ypass of Xzkltori- other) returcs, ma& 2 substitution of a

bsw resoaztisn of the salinity roblem. However, thi stitution woul reduce extant

lies. The task f o onelzded that es~bution of the exico salizity a natimal obligation, to b y the Nation as ther thaw by any specific se herefore, the solution should involve the expenditure

s rather than water, limiting the direct im act on the Basin States.

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We yau r directLon, the Unite eeking a k i - n a t i o n a agreerent to end =he % o ~ g - s c a n d i r ezweec ourselves an %he xepgblFc of Mexics over t h e s

olorzds River,

have every wish f s s f u l conclus ibPe terms ef n agreement ke basic wate ests of the

ater Sasin % atic~s may estic pobit

eonsf derations in afinity issue, In ere, we ar oncessions detrirne o River Ba be made without t

and consent of th heir elected representatives.

there are several

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2 . I$ would be inpracticzl and co-meer sp t a f i x e d wuaericab differential in saliniky lev en Ixperial D m , i n California, an Mcrelas Dax, in Mexico,

,he objective sazght caw and shsu%d be thieved by okher rneths

y saliniky 9: rograrn for t h e lower hanci-in-haw eam~lementary pr

liwiky ~f the o tha2 water ulation center e of accepta

quality in the

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PENDIX D

We respeetfclly request an a poiwtnent w i t h you persocaily, s o that we may discuss this E a t t reazer depth

answes any qcestisns yo^ may case to ask, We will make oursehves available, 2% y o u r pleasure,

Sincerely,

P a u l 3. Rannin, U. S. S,

John B. Gonlan, K.C.

Frank E. Moss, U,S.S.

Barry Goldwater, U. S . S,

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Page 4 of 5

Don CEausen, M a c ,

Barry Goldwater, Jr,, Me@.

Richard T, Hannz, M.C,

John H. Rousselot, Me@,

:e J , - C l e i r W e Burgewer, M . C ,

rathwaite Burke, M.C.

Lionel Van Deerliw, M.C.

Wayne Owens, Ma@.

Patricia Schroeder, M , C ,

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/ s / Alan Cranston, U, S . S ,

Alan Bible, U, S , S ,