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Report: 73-124) as shown in Map 7 attached to this report. The DWR has indicated that any renewal <br />request of this SWSP must justify the use of the SDF or use alluvial aquifer options in the IDS AWAS. <br />To be consistent with the original analysis, this amendment has continued the use of the SDF mode for <br />estimating the new lagged depletions, with the intent of using the alluvial aquifer options for the renewal <br />request next year. <br />Replacement Water Supply: <br />The replacement of the Journey Ventures Pit lagged depletions will continue to come from a lease of wholly <br />consumable water supplies from the City of Greeley and will be adequate to meet the small increase in <br />depletions. <br />Dewatering Plan: <br />The dewatering operations planned at the Journey Ventures Pit will consist of pumping water at a rate <br />expected to be about 1000 gpm, but with capacity up to 4000 gpm (540 acre-feet per month) from the <br />dewatering sump to the sediment pond and recharge pond, located approximately 800' feet away in the <br />southern portion of the property (see attached drawing). Dewatering is expected to begin in October and <br />continue up to the completion of the slurry wall, or around April 2016. Since the sediment pond and recharge <br />pond will ultimately be contained within the completed slurry wall, once the wall is completed J-2 will <br />relocate the recharge pond to the western portion of the property outside of the slurry wall in April. Water <br />will be pumped from the original ponds into the new recharge pond at that time and any subsequent <br />dewatering will be pumped into the new sediment and recharge pond. The surface area of the new recharge <br />pond is expected to be similar to the original. <br />The primary purpose of the recharge ponds is to provide a mechanism for which the water produced from <br />dewatering can be lagged back to the South Platte River. Since the location of the dewatering and recharge <br />sites are in close proximity, with similar soil and aquifer characteristics, the lagged depletions from <br />dewatering should be fully offset in time and space by the recharge provided by the ponds. <br />If you should have any questions regarding the Journey Ventures Pit Substitute Water Supply Plan, please do <br />not hesitate to contact me at (970) 221-5159 or at 1),��}� au,:r a mss: <br />Sincerely, <br />Paul Weiss, P.E. <br />Principal <br />Williams and Weiss Consulting <br />cc: via e-mail: Chris Leone (J-2 Contracting), JC York (J&T Consulting), Mark Simpson (DWR) <br />2 <br />