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<br />Metropolitan Water Supply Investigations - Phase II Plan of Study <br />7/5/94 4:17 PM <br /> <br />Page 15 <br /> <br />associated with reuse of municipal effluent. The uses to be considered <br />include: <br /> <br />. agricultural irrigation <br />. forage and feed crops (hay, feed grains) <br />. crops for fresh human consumption (vegetables) <br />. other crops (sugar beets, etc.) <br />. urban irrigation <br />. industrial uses <br /> <br />Each of these uses are subject to minimum standards for certain parameters. <br />Threshold parameters would be based upon regulation or EPA guidelines. <br />Higher standards may be appropriate, based upon user specific criteria, public <br />interest or process requirements. <br /> <br />b) flpproach <br /> <br />Review available literature and regulatory documents pertaining to water <br />quality considerations for reuse of municipal efflueOl for various types of use. <br /> <br />Interview representatives experienced with the various proposed uses of <br />effluent in order to identify perceived water quality needs. <br /> <br />Document current known instances of effluent reuse to identify water quality <br />constraints . <br /> <br />Compile water quality thresholds, both regulatory and desirable. <br /> <br />Compile existing baseline water quality data for stream flows and various <br />effluent sources in the metro area. <br /> <br />Review modeling results from other studies for projected streamflow water <br />quality under different assumed scenarios of effluent discharge, reuse and <br />exchange. <br /> <br />" <br /> <br />c) Output <br /> <br />A matrix of proposed alternative uses and water quality parameters will be <br />used to display water quality thresholds for reuse of effluent. This <br />information will be used in the assessment of treatment technologies to identify <br />required levels of treatment for various alternative uses. <br /> <br />d) Sub-Task Leader: Jean Boyer <br />