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March 23. 2001. The report is based on a I-acre starter pit that will be excava[ed below the water table to a depth of 25 feet. During construction of the I-acre pt[, water will be removed by pumping from the low areas where water accumulates. Once the starter pit is mined, a dredge will be constructed in the pit. Dew'atering will cease, and dredging ("wet minins_") will begin from that point in time. To further minimize impacts, Platte Sand & Gravel w'iII commit to mining in each dewa[ering area in earl}' summer so that aquifer dewatering is complete prior [o the next irrigation season and mining will be conducted in each lake area as Far from the wells as possible and as close to the river as practical. The applicant will need to submit an additional hydrologic assessment if changes to the dewatering plan are necessary (including dry mining greater than 1-acre in size or installing an upgradient recharee facility). At that time, the Division will review the impacts to the hydrologic balance and surrounding well owners. Platte Sand & Gravel committed to not expose groundwater until a well permit is issued by the Office of the State Engineer ("OSE"). The applicant states that a Temporary Substiwte and Supply Plan and well permit have been filed wi[h the OSE. In the Temporary Substi[ute and Supply Plan, the applicant will commit to buying water from Longmont to cover the industrial and evaporative uses associated with the operation during the first five years. The applicant agreed to submit copies of the contract to the Division once they are available. The applicant has committed that groundwater will not be exposed until they have received necessary approvals from the OSE. Mr. Ptasnik (objector) hired a consultant, Leaf Engineering, [o detertnine the impacts of the proposed S & H mining operation to the surrounding well owners. The analysis prepared b}' Leaf Engineering dated February 28. 2001 is based on drawdown calculations for the dry pit mining after 365 days of continuous dry mining in an average cell consisting of approximately 45 acres. The result of the analysis depicts potential injury to all of Mr. Ptasnik's wells at the end of the 90-day pumping period for the wells and the 365 days of continuous pit dewatering. The applicant has commi«ed to a dewatering pit of no greater than I-acre in size, significantly less than the analysis prepared by Leaf Engineering. 3. Presence of wetlands, necessary mitigation and need jot 404 permit. (Michael Ptasnik; and Scott, Brochard, Depratt, Oder+bar+gh, Reinick & Rippe) • "l have major concerns regarding the wetlands in the applicants permit. It has been relatively dn' over the past few rears. but there is no question multiple areas of wedands erirt in the m~eas requested jar mining. The appficwu has contpletek ignored the presence of wetlands slating that a U.S. Corps of Engineers permit is »or required." (Michael Ptasnik; Febnran' 7, 200!) • "The application should provide a sire specific rerien and idenrificariort oJjurisdictional wetlands prior to grmuing the permit. This study should be undertaken 6r'a neutral third pam agency" (Scott, Brochnrd, Depratt. Odenbmrgl+, Reinick & Rippe; Februnn~ l4, 2001) Division Response- A preliminary wetlands study was completed by ERO Resources in 2000, and a copy of the wetlands identification map was submitted to the Division titled. "Platte Sand & Gravel LLC Adequacy Exhibit 5 Wetlands Map." Platte Sand & Gravel states that they will not impact the wetland areas at [his time. A letter dated April 1, 2001 from the Department of the Army Corps of Engineers states that the area to be mined in the next I S years is not a wetland. If and when a U.S. Army Corps of Engineers 404 Permit is issued, the applicant has agreed to submit it [o the Division to de[etmine what course of action will be needed regarding the reclamation plan and the reclamation cost estimate. 4. 100 year flood plain analysis, mitigation and set back requirements. (Michael Ptasnik; and Scott, Brochard, Depratt, Odenbaugh, Reinick & Rippe) • "This entire area is in the /00 rear flood plaht. As recent/y as three Bears ago, htutdreds ajthese acres sere flooded and inaccessible for weeks. Approsirrmteh 25 years ago, this entire area ,vas Jlooded and wider venter. The rirerbmtks in the spring erode regulnrRt mid the ricer path courirwes m change significanth~. Forq~ acres ojriverbank were lost four years ago during spring Jloodirtg. Please do not allow the appficnnr to minimize the historical, ten! floodir+g thur regularly occurs in this area. " (Alichael Pmsnik; Februan' 7, 2001) "The proposed sire is entirely ,cidrirt the 100-rearflood plain for the Sonth Plante. The applicant shmdd provide a derailed plan of operation ,which veil! protect adjacent and dox~nstrenm residents from mine or plant produced