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<br />depletions and put terms and conditions into the decree to make sure that the <br />augmentation supply will always be adequate to fully replace the depletions and <br />prevent injury, South Adams County is essentially the water supply for the <br />Commerce City area and supplies 10,000 acre-feet of water, has recharge rights <br />from the 1970s and is developing several thousand acre-feet of gravel pit <br />storage, He discussed the issue of historic calls, Districts 1 and 2 have on <br />average had calls about half of the year and, during droughts, the call is year- <br />round, He stated that six weeks is not enough time to soak in and refill the <br />aquifer caused by well depletions, The Glover methodology is the most <br />commonly used methodology, the Modflow is a data-intensive computer model <br />and provides better results but requires more information; both are acceptable <br />methods, <br /> <br />Dave Jankowski - Attorney with White & Jankowski (provided handout <br />http://www.aq.state.co.us/comm issioner/southplatte/20070716%20T ask%20Forc <br />e%20Meetinq%20Handouts%20(00025970), PO F) <br />Referenced and discussed the South Platte River Compact and Delph <br />Carpenter's report, The compact is important to District 64 water users, The <br />compact would be self-regulated when water reaches the stateline, Wells are <br />taking the seepage and the return flows, they come to the river underground, the <br />wells intercept that water and prevent the water from reaching the stateline, He <br />asked the Task Force to not take any action that would violate the promise made <br />to the District 64 users when the Compact was written, The solution is a water <br />supply issue and wells need to augment. <br /> <br />Don Chapman - Superintendent of Riverside Reservoir Company and Riverside <br />Irrigation District <br />He believes it is important to not include the pre-1974 well pumping in <br />depletion calculations because pumping that occurred generations ago occurred <br />under the presumption that there was no long-term replacement obligation being <br />incurred by that activity, It was later determined that there was a connection <br />between the well use and the stream and pumping should be included in <br />depletion calculations, His second proposal is in recognizing that their depletion <br />and accretion calculations are less than perfect, and allow augmentation plans to <br />carry forward a 30-day excess net affect into the next month to cover any <br />augmentation plan depletions in the subsequent month, With respect to <br />augmentation plan administration and operation, and the ability to aggregate <br />wintertime replacement, the State Engineer's Office can make a reliable <br />determination that reservoirs are likely to fill in the upcoming season. The final <br />proposal would be that in the projecting of an augmentation plan during the <br />upcoming year, the administrator of the plan looks at the supply and expected <br />pumping early to communicate with members in March and April when they are <br />making planting decisions what the allocated pumping is likely to be. Allow plans <br />to use average diversions for replacement projections and then use actual <br /> <br />- 5 - <br />