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Steamboat Sand and Gravel Pit SWSP <br />March 11, 2015 <br />Page 7 of 8 <br />any dried -up fields containing alfalfa or native grass was reduced according to the <br />following table. <br />(a) Measurements taken at the start of each month will determine the necessary <br />reduction in credit to be applied during the following month. The applicant may <br />use another methodology upon review and prior approval by the state engineer <br />and division engineer. <br />Depth to Ground <br />Water (Feet) <br />Percent Reduction in CU Credit' <br />Native Grass <br />Alfalfa <br />1 <br />85% <br />100% <br />2 <br />50% <br />90% <br />3 <br />30% <br />75% <br />4 <br />20% <br />50% <br />5 <br />15% <br />35% <br />6 <br />10% <br />20% <br />7 <br />5% <br />15% <br />8 <br />0% <br />10% <br />1. Adapted from EVAPOTRANSPIRATION AND AGRONOMIC RESPONSES IN FORMERLY <br />IRRIGATED MOUNTAIN MEADOWS, South Parts, Colorado, March 1, 1990; Revised September <br />1, 1991 <br />15. This substitute water supply plan may be revoked or modified at any time should it be <br />determined that injury to other vested water rights has or will occur as a result of this <br />plan. Should this substitute water supply plan expire without renewal or be revoked prior <br />to adjudication of a permanent plan for augmentation, all excavation of product from <br />below the ground water table and all other use of water at the pit must cease <br />immediately. <br />16. In accordance with amendments to §25 -8- 202(7), C.R.S., and Senate Bill 89 -181 Rules <br />and Regulations adopted on February 4, 1992, the State Engineer shall determine <br />whether the substitute supply is of a quality to meet requirements of use to senior <br />appropriators. As such, water quality data or analysis may be requested at any time to <br />determine if the water quality is appropriate for downstream water users. <br />'ov_ 04o` <br />1313 Sherman Street, Room 821, Denver, CO 80203 P 303.866.3581 F 303.866.2223 www.water.state.co.us <br />