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<br />- <br />'-- <br /> <br />'e' <br /> <br />...... <br />o <br />o <br />w <br /> <br />After a difficult struggle, S-2940 passed the Congress and <br /> <br />was signed by the President. <br /> <br />Since that time, work has begun on the Grand Valley Project, <br /> <br />but the other projects continue to be studied and studied and <br /> <br />studied. <br /> <br />In the course of fulfilling its responsibility, the Forum <br />has reviewed the existing state-adopted Environmental Protection <br /> <br />Agency-approved numeric salinity criteria and plan for imple- <br /> <br />mentation for salinity control for the Colorado River system <br /> <br />during each three-year period. <br /> <br />Its 1981 review found, among <br /> <br />other things, that the flow-weighted annual average salinity at <br /> <br />the three measuring stations in 1980 were 707 parts per million <br /> <br />for Hoover Dam, 703 parts per million for Parker Dam, and 755 <br /> <br />parts per million for Imperial Dam, as opposed to numeric criteria <br /> <br /> <br />in 1972 of 723 parts per million for Hoover Dam, 747 parts per <br /> <br />million for Parker Dam, and 879 parts per million for Imperial <br /> <br />Dam. <br /> <br />However, these figures should be accepted with considerable <br /> <br />reservation because certainly in 1979 and 1980 the low salinity <br /> <br />concentration at Imperial Dam was due to surplus flows which <br /> <br />occurred in those years. <br /> <br />The Forum made three different predictions as to future use <br />. <br /> <br />of water. These range from 3.5 million acre-feet in the Upper <br /> <br />Basin states in 1985, to 4.8 million acre-feet in the Upper Basin <br /> <br />in 1995, and, of course, the quantity of use in the Upper Basin <br /> <br />-23- <br />