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McGrane Water Engineering, ITC <br /> 1669 Apple Valley Rd.•Lyons,CO 80540•Phone:(303)917-1247 <br /> L-Mail;dennis!nmcgrancwater.com <br /> January 31.2020 <br /> Mr.JC York <br /> J&T Consulting, Inc. <br /> 305 Denver Avenue,Suite D Via email at: 'jot nstaitI Ct tY3. <br /> Ft.Lupton,CO 80621 <br /> RE: Derr Pit-Hydrologic Assessment and Computer Modeling <br /> Dear Mr.York: <br /> Table 3 - Change in Water Levels Caused by Loloff, Derr and Derr Amendment Slurry <br /> Walls <br /> Current <br /> Modeled ModeledModeled Depth to Dra�doR°n'' <br /> Well Depth Predctetop- Change in Predicted Water(ft) from <br /> Well Location Well Owner(type) Permit (it) ment Depth Water Levels to Wafer(11) (ft) Depth*(ft) 1/912020 Predevelopment <br /> Conditions(ft) <br /> Koehler(Domestic) 314643 52 40.5 2.7 37.8 48.1 -8 2 <br /> Koehler(Stock) 314644 52 39.2 2.6 36.6 47.7 -8.5 <br /> Koehler(Irri tion 11564-R 110 41_i 0.5 40.6 50.2 9,1 <br /> Upgradient Davis(hrig tion 14960-R 101 39.8 3.2 35.6 471 -8.4 <br /> Wells Parker(Domestic) 44673 72 35.9 1.4 34.5 42.1 -6.2 <br /> Harrell Domestic 226878-A a0 10.1 0.7 9.4 10.7 1 46 <br /> Harrell(Irrigation) 287278 30 11.3 09 10.4 101 1.2 <br /> Homer Domestic 13200-F 95 36.1 L2 34.9 451 9.0 <br /> Roland 'domestic 421-WC1 87 23.5* 1.5 22.0* ND ND <br /> Tavlor Domestic 223885-A 44 9.9 49 10.8 18.0 41 <br /> Downgradient Murata Domestic 246784 80 39.5 -2 1 41.6 49.2 -9.7 <br /> W'eils Baab A C(domestic) 620-WCB 45 9.3* -1.0 1R3* ND ND <br /> Orona`Domestic) 28174 ND 11.3* .0.8 12.I* ND AID <br /> Notes: ND=No Data <br /> 'Calculated based on DEM data ground elevations <br /> 3 <br />