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<br />Page Five <br /> <br />. <br /> <br />. <br /> <br />The Colorado River Basin states have continually placed these t'\'lO concerns <br /> <br />side by side. Th;'ir approach is exemplified in the salinity standards <br /> <br />and through the Colorado River Basin Salinity Control Forum in its state- <br /> <br />ment of IIprinciples and Assumptions for Development of Colorado River <br /> <br />Salinity Standards and Implementation Plan," approved by the Forum on <br /> <br />September 20, 1974" Included in this statement is Principle 7 which <br /> <br />reads: <br /> <br />The plan of implementation shall be reviewed and modified as <br />appropriate from time to time, but at least once each three <br />years. At the same time, the (numeric) standards, as required <br />by Section 303(c) (1) of PL 92-500 shall be reviewed for the <br />purpose of modifying and adopting standards consistent with the <br />plan so that the basin states may continue to develop their <br />compact-apportioned waters while providing the best practicable <br />water quality in the Colorado River Basin~ <br /> <br />See, Exhibit B at 126. These two significant concerns relating to use <br /> <br />of the waters of the Colorado River must continue to be addressed to- <br /> <br />getller. This is appropriately reflected in the Commission's proposed <br /> <br />water quality standard and basinwide approach. <br /> <br />III. THE STANDARD IS ESTABLISHED AT THE CORRECT LEVELS AND LOCATIONS <br /> <br />~le salinity problem in the Colorado River is primarily an economic <br /> <br />issue which affects some agricultural and municipal uses in the lower <br /> <br />main stem of the Colorado River Basin. It has been long recognized that <br /> <br />mineral pollution in the Colorado River has no significant detrirrental <br /> <br />effect on instream or non-consumptive uses such as hydroelectric power <br /> <br />generation, fish and aquatic life and water-oriented recreation. The <br /> <br />Blue Book, Exhibit E, recognizes that the levels at which crops may be <br /> <br />adversely affected by salinity varies widely according to the type of <br /> <br />, <br />. <br /> <br />13"99 <br /> <br />...---..-.~-,",_...,. <br />