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<br />. <br /> <br />obtained from or developed in cooperation with the Bureau of <br /> <br /> <br />Reclamation in its Front Range Study which examines in detail water <br /> <br /> <br />supply, distribution, and use in this area but does not consider <br /> <br /> <br />the water quality factor. Urban use of water would also be exam- <br /> <br /> <br />ined to determine its effects on increasing TDS both in wastewater <br /> <br /> <br />and lawn irrigation applications. <br /> <br />Once the data has been organized, a mass balance calculation <br /> <br /> <br />for the basin would be prepared. Water flow through the basin and <br /> <br /> <br />its TDS content would be examined to determine where the TDS origi- <br /> <br /> <br />nate, their transportation vector mechanisms, and where they are <br /> <br /> <br />removed from solution. This type of analysis would reveal areas <br /> <br /> <br />within the basin that are of particular importance either in increas- <br /> <br /> <br />ing the TOS or acting as receivers of TDS. Areas where TDS are <br /> <br /> <br />deposited are likely to suffer crop yield reductions. <br /> <br />Problem identification would be followed by the development <br /> <br /> <br />of techniques which can be used to either stabilize or reduce the <br /> <br /> <br />TDS problem. This viII include techniques such as controlled appli- <br /> <br /> <br />cation of vaters in areas where TDS are being picked up to prevent <br /> <br /> <br />runoff and inflow infiltration to the ground vater table, elimina- <br /> <br /> <br />tion of runoff from ground water applicatio~s with high TDS, crop <br /> <br /> <br />management to encourage growth of crops resistant to yield reduc- <br /> <br /> <br />tions in high TDS areas, rate of application control for irrigation <br /> <br /> <br />waters, improved irrigation techniques, veIl metering, localized <br /> <br /> <br />water treatment to reduce TDS, control of TDS in municipal waste- <br /> <br />waters, and lined distribution laterals. These techniques would <br /> <br /> <br />be coordinated with alternatives developed in the Front Range Study <br /> <br /> <br />for affecting maximum beneficial use of the water resource. <br /> <br />. <br /> <br />35 <br />