Laserfiche WebLink
<br />l-'- <br />W <br />.....J <br />"p. <br /> <br />waters and makes no attempt to offset salinity <br />increases resulting from natural hydrologic <br />variations of the river system. Salinity control is <br />accomplished primarily by reducing salt <br />contributions to the river from existing <br />upstream sources and by minimizing future <br />increases in salt load caused by man's activities. <br />Control measures are selected on the basis of <br />cost effectiveness, technical feasibility, social <br />and political acceptability, and environmental <br />considerations. <br /> <br />The salinity control plan will remove about <br />1.5 million tons of salt annually from the <br />Colorado River system by the year 2010 <br />at a remaining cost of the approximately <br />$604 million. <br /> <br />Figure 4 shows how the salinity control plan <br />identified in 1990 meets the numeric criterion at <br />Imperial Dam in 2010. Figure 4 also shows the <br />projected salinity at Imperial Dam with and <br />without further controls to the year 2010. <br /> <br />1,000 <br /> <br />950 <br /> <br />Funding <br /> <br />Public Law 93-320 and its amendment require <br />that a percentage of the Federal cost for the <br />salinity control program be repaid from the <br />Upper and Lower Basin water development <br />funds with revenue generated from the sale of <br />hydropower. Repayment analysis ofthe Lower <br />Colorado River Basin Development (LCRBD) <br />Fund prepared for the 1990 water quality <br />standards review and this evaluation shows that <br />sufficient funds are available to cover all costs of <br />the salinity control plan. The 1991 repayment <br />analysis spreadsheets are included in the <br />appendix. <br /> <br />USDA <br /> <br />The current funding of$14. 786 million for the <br />USDA portion of the plan greatly restricts <br />implementation of existing projects and hinders <br />bringing new projects into the program. More <br /> <br /> <br />WOhoUI saUnO, prognun <br /> <br /> <br />, , <br />"... , <br /> <br />- /' ......, " <br />,- ........ ,"'---, .... <br />I , , -_.., <br />, ..., <br />I ........ , <br />, y <br /> <br /> <br />... ,. Wfth 1990 sallnOy program <br /> <br />~ <br />...J <br />Q <br />E <br />- <br />~ <br />:E <br />iii <br />rJI <br />-c <br />G> <br />- <br />.s= <br />0) <br />G) <br />~ <br />, <br />~ <br />o <br />u: <br /> <br />900 <br /> <br />Numeric c:rllerlon . 879 mglL \ <br /> <br />850 <br /> <br />800 <br /> <br />750 <br /> <br />700 <br />1990 <br /> <br />1995 <br /> <br />2000 <br />Year <br /> <br />2005 <br /> <br />2010 <br /> <br />Figure 4.-5alinity projections at Imperial Dam. <br /> <br />9 <br />