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<br />. <br /> <br />. <br /> <br />&II'" THE Pt~.LlC R[CORD CORPORATION <br />ALL RIGHTS .[StavED <br /> <br />3.9.0 <br /> <br />o <br />N <br />r0 <br />o <br /> <br />3.9.1 <br /> <br />3.9.2 <br /> <br />,( <br /> <br />3.9.3 <br /> <br /> <br />5CR6. 6-82 <br /> <br />Page 1 <br /> <br />COLORADO RIVER SALINITY STANDARDS* <br /> <br />AUTIlORITY <br /> <br />This regulation is promulgated pursuant to C.R.S. 1973, 25-8-l0l.et <br />seq., as amended, and in particular, Sections 25-8-202)2), 25-8-204; <br />and 25-8-207(1) (c), as amended. <br /> <br />INTRODUCTION <br /> <br />Slillinity or total dissolved solids (TDS) occurs at low concentrations <br />in the headwaters of the Colorado River and its tributaries in Colo- <br />rlildo; however, salinity concentrations increase downstream. The <br />primary effects of salinity occur in the lower Colorado River basin. <br />This is largely due to the higher levels of salinity and the type of <br />crops grown there. Since total dissolved solids are conservative con- <br />stituents which affect certain water uses in the lower Colorado River <br />basin, and in order to utilize the most effective control methods, a <br />basin-wide approach for controlling salinity is being followed. <br /> <br />The seven states through which the Colorado River runs formed the <br />Colorado River Basin Salinity Control Forum ("Forum") to coordinate <br />the basin-wide approach. The Forum gathers and reviews informatibn <br />relevant to the complex problem of salinity of the Colorado River and <br />makes recommendations for 'adoption of salinity standards and implemen- <br />tation o.f controls by the basin states. Colorado, as a member of the <br />Forum, will work with the other basin states and the federal govern- <br />ment to manage salinity and its effects through this basin-wide effort. <br /> <br />WATER QUALITY STANDARDS <br /> <br />Colorado is participating in the multi-state basin-wide approach for <br />salinity management which utilizes state, interstate, and federal <br />authorities and resources. The water quality standard for salinity <br />in the Colorado River basin shall remain the same as adopted in 1976. <br />That is, the water characteristics designed to maintain the fol19wing <br />flOw-weighted average annual values: <br /> <br />Below Hoover Dam <br />Below Parker Dam <br />At Imperial Dam <br /> <br />723 mg/ 1 <br />747 mg/l <br />879 mgll <br /> <br />*The term "water quality standard' as used in the Colorado Water Quality " <br />Control Act, C.R.S. 1973, 25-5-204, is similar to the term criteria as .; <br />used in the Federal Clean Water Act, 33 U.S.C, Se~tion 303(c). <br /> <br />THE CODE OF COLORADO REGULATIONS <br /> <br />.'1 <br />; <br />i:l <br />j <br /> <br />5 CCR 1002 - 10 <br /> <br />We,} <br />.r';,!;"; <br />~-"- <br />