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11 <br />16. Statement of Plan for Augmentation: <br />0 <br />Delta Paving Pits <br />Ruling of Referee - Case 99CW 128 <br />Page 5 <br />A. The Delta Paving Pit Wells are five proposed gravel pits located on lands <br />owned and leased by Applicant. Mining operations will be conducted when necessary, and could <br />occur at any time of the year. Applicant estimates that a maximum of 125,000 tons of material will <br />be mined each year until the gravel is mined out. The Delta Paving Pit Wells will intercept <br />groundwater, and mining operations will result in the formation of five ponds with a total maximum <br />exposed water surface area of 60 acres. Water will be pumped from these ponds and used on-site <br />for dust suppression and aggregate washing. Depletions will occur from these dust suppression and <br />aggregate washing operations. In addition, depletions will occur from evaporation from the ponds <br />and from product moisture loss related to moisture in the mined material. During mining, the pits <br />will be dewatered, with the water being discharged to the Gunnison River. However, these <br />dewatering operations will not result in any depletions in addition to those described above. The <br />amount of product mined and the mining operations period may vary from year to year. The <br />augmentation plan described herein will allow for changes in the pond sizes, the scope of the mining <br />operations, and the time period of the mining operations without the necessity of amending this <br />augmentation plan. <br />B. There is water available for appropriation in the Gunnison River from May through <br />August of each year. Thus, the water rights claimed for the Delta Paving Pit Wells will be in priority <br />during those months, and no augmentation or replacement of depletions shall be required during <br />those months. However, the Gunnison River is considered potentially over-appropriated during the <br />months of September through December and January through April of each year (which months will <br />be referred to herein as the "Call Period"). Thus, augmentation of depletions from the Delta Paving <br />Pit Wells may be necessary during the Call Period. The plan for augmentation described herein <br />provides for augmentation and replacement of depletions from the Delta Paving Pit Wells during the <br />Call Period. <br />C. Water diversions and depletions from the Delta Paving Pit Wells, at full operation <br />and buildout, will be as follows: <br />(I) . Water will evaporate from the exposed water surface areas of the Delta Paving <br />Pit Wells. Net evaporative depletions from the Delta Paving Pit Wells from a total exposed <br />water surface area of 60 acres will be 218.75 acre feet per year, of which 92.03 acre feet of <br />depletions will occur during the Call Period. Exhibit C, attached hereto, details the <br />calculation of the net evaporative depletions annually and during the Call Period from the <br />Delta Paving Pit Wells.