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<br />'. <br /> <br />. <br /> <br />. <br /> <br />RIO GRANDE WATER SUPPLY STUDY - PHASE I - STEP TWO <br /> <br />---------------------------------------------------------------- <br /> <br />Task 11-2 Formulation of Closed Basin proj ect Operating <br />Scenarios. <br /> <br />---------------------------------------------------------------- <br /> <br />To refine the Closed Basin operating scenarios used in <br />step One of the Study to reflect variable rates of <br />delivery to the Rio Grande. <br /> <br />Approach: In this task the Step One constant delivery rates from <br />the Closed Basin proj ect will be replaced by two new <br />scenarios to the developed in consultation with the <br />study Advisors 0 The new scenarios will provide for <br />variable rates of delivery from the Closed Basin <br />Project to the Rio Grande and for variable distribution <br />of those deliveries between the Rio Grande mainstem <br />users and the Conejos River users. Activities include <br />the following: <br /> <br />Purpose: <br /> <br />10 LRCWE will review engineering studies (being <br />performed for the Rio Grande Water Users <br />Association) that formulate possible scenarios of <br />future Closed Basin Project operation. Three <br />meetings will be held with engineers representing <br />the Rio Grande water Users Association (RGWUA). <br /> <br />2. LRCWE and MacDouaall will review the step One <br />methodology relative to the Closed Bas in proj ect <br />operation and formulate two new operating <br />scenarios which are acceptable to the Study <br />Advisors. The new methodology may be based, at <br />least in part, on work currently being performed <br />by engineers for the RGWUA. <br /> <br />3. LRCWE will incorporate the proposed operation of <br />the Closed Basin project into the RIBSIM computer <br />model, operate the model ~~d summarize the Closed <br />Basin proj ect results for the revised scenarios. <br />Task budgeting assumes that the Closed Basin <br />Project operation will be implemented through <br />changes to the RIBS 1M program's logic. Model <br />testing will use the most recent version of the <br />model and its data sets available at the time. <br /> <br />4. LRCWE and MacDougall will review model results <br />with the Study Advisors. If the initial <br />simulation results do not approximate the desired <br />Closed Basin project operation, then suggestions <br /> <br />June 17, 1988 6 <br /> <br />~ Leonard Rice Consulting Water Engineers,lnc. <br />