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Cristyn Radabaugh June 28, 2019 Page 2 of 10 River and credits, reduced by transit loss, may be exchanged upstream to Pueblo Reservoir for use by Fountain via pipeline. Exchanges may also be necessary to an intermediate location when exchange potential is not available from the exchange from point to Pueblo Reservoir. The application indicates the possible use of the Holbrook Canal as an intermediate exchange to point for delivery to Holbrook or Dye Reservoirs with a subsequent release and exchange to Pueblo Reservoir when exchange potential exists. Historical return flows are proposed to be maintained by utilization of the augmentation stations mentioned above as well as delivering return flows as necessary to three recharge ponds (Schweizer [WDID 1704800], Chavez [WDID 1704802] and Mayhoffer [WDID 1704803]). See the maps included at Enclosure 1 for reference regarding farm location and key operational structure locations. Historical Consumptive Use Analysis Super Ditch's engineer prepared an analysis of historical consumptive use and return flow obligations for each of the four individual farms utilizing the Lease Fallow Tool. For three of the farms (Mayhoffer West and South and Thelin) a study period of 2000-2017 was selected for the analysis. The Mayhoffer East farm parcel had not been irrigated past 2009 so a shortened study period of 2000-2009 was used for this farm. The State and Division Engineer's staff ("Engineers") reviewed the analysis for each farm and found the conclusions to generally be reasonable as long as the temporary change is operated pursuant to the specific terms and conditions listed for each farm below. There were some instances where the Engineers believed it necessary to make minor modifications to the proposed factors or limits. For each farm the approved return flow factors and limits on consumptive use credits are summarized in the conditions of approval below. CONDITIONS OF APPROVAL This IWSA is hereby approved pursuant to 937-92-309, C.R.S., subject to the conditions stated below: 1) This IWSA shall be valid for the period from July 1, 2019 through December 31, 2028 unless otherwise revoked. The application provided on April 12, 2019 serves as notice of operation for the first of the three years this plan can be operated pursuant to the IWSA Rules during this approval period. 2) For each subsequent year of operation of this IWSA, notice must be provided to the Water Commissioner for Water District 17 and the Division Engineer by March 1. This notice will be for the purposes of (a) reporting on any continuing delayed return flows still owed under the plan and confirming how those return flows are being maintained and (b) identifying the second and third year of operation within the ten year period. Notices are required beyond 2028, if needed to confirm maintenance of historical return flows, until delayed return flow maintenance has been completed. Applicants must notify and provide mapping to the Division Engineer of those parcels to be fallowed and the associated shares for the operational year.