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• iii iiiiiiiiiiiiiiii • <br />ROCKY MOUNTAIN CONSULTANTS, INC. 999 ~ ~~ <br />700 Florida Avenue <br />Flith Floor <br />Longmont, CO 80501 <br />(303) 772-5282 <br />Metro (303) 6Q5-6283 <br />FAX (303) 665-6959 <br />March 16, 1992 <br />Mr. Thomas G. Mathias, President <br />Mathias Concrete, Inc. <br />P.0. Box 266 <br />Monte Vista, Colorado 81144 <br />-~ RE: Review of Substitute Supply Plan Submittal for Mathias Concrete North <br />Farm Road Pit No. 1 - MLRD Permit M77140 <br />Dear Mr. Mathias: <br />' Thank you for your response to my request for information regarding the <br />application for this substitute water supply plan. After reviewing your <br />submittal I have the following questions and/or concerns. Please respond to <br />each of the following items. <br />V <br />~ Please provide documentation for the following: <br />~ ~~ <br />Cj~ Ownership of the proposed replacement water <br />(Rio Grande Canal shares) <br />Please provide an analysis of the actual consumptive use of Rio <br />Grande Canal water used to irrigate the alfalfa in the area to be <br />dried up under this plan. You must show the actual historical <br />consumptive use of irrigation water not just the potential <br />consumptive use which is stated by Agro Engineering to be 24.1 <br />inches. Your analysis should consider the historic amounts and <br />timing of Rio Grande Canal water applied to the crop, monthly crop <br />water requirements, irrigation efficiencies, etc. No credit will <br />be allowed in this plan for consumptive use of well water unless <br />the well is covered by a Court approved plan for augmentation. <br />Therefore, your ana]ysis of historic consumptive use which will be <br />used to replace out-of-priority depletions at the pit should be <br />limited to Rio Grande Canal water only. <br />You may claim consumptive use credits for the alfalfa historically <br />grown on the area now consisting of exposed water surface, subject <br />to the discussion in the previous paragraph regarding Rio Grande <br />Canal and well water, This may reduce the required amount of dry <br />up from the 20.5 acres of alfalfa you highlighted on your map. <br />CIVIL AND ENVIRONMENTAL ENGINEERING PLANNING <br />