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AGRO ENGINEERING <br />"COMPREHENSIVE AGRICULTURAL AND WATER RESOURCE CONSULTING" <br />Vff 0210 ROAD 2 SOUTH ALAMOSA, CO 81101 PHONE (719;1852-4957 FAX 852-5146 <br />Mr. Craig Cotten <br />Division Engineer, Water Division No. 3 <br />P.O. Box 269 <br />301 Murphy Drive <br />Alamosa, CO 81101 <br />Mr. Joe McCann. <br />Water Commissioner, Water Division No. 3 <br />P.O. Box 106 <br />Monte Vista, CO 81144 <br />October 22, 2009 <br />RE: Annual Compliance with Case O 1 CW23 Requirements. <br />Mario Bassi and Josephine Bassi Gravel Pit Plan for Augmentation. <br />Dear Mr. Cotten, <br />I am submitting the annual analysis of the size of the pond and evaporation associated <br />with the gravel pit owned by Mr. Mario Bassi near Monte Vista, CO., and governed by the <br />decree of Case 01 CW23. The decree of Case O1 CW23 is based on three principle conditions, <br />mainly: <br />1. The dry-up of 2.32 acres of historically irrigated pasture grass for each acre of <br />ground water exposed. <br />2. Maintaining normal return flows associated with the land dried-up by diverting <br />and metering into the gravel pit 6.97 acre-ft of Fish Ditch water for every acre of <br />ground water exposed. <br />3. In order to account for and offset consumptive use associated with the one-time <br />loss of water through removal and washing of the mined product, dry-up <br />sufficient acreage to account for such one time consumptive use, calculating the <br />number of acre-ft to be compensated for by multiplying the number of tons of <br />mined material by 0.0000294. <br />This gravel pit was actively mined throughout 2009. Groundwater was exposed as a <br />result of the mining activity. Based on field measurements, a maximum ground water area of <br />1.81 acres was exposed. A total of 20,430 tons of material was wet mined.