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F k~iM • Nn.Li. 1`19~19:J3 N. ti Mrs. Margaret Winter July 2, 1982 Page 5 There is np evide>t?cs that Che ,plluvle~l deposits which overlie Clf~"i;aramie Formation art dCying up. Wells in the area that are developed in the flood piain or terrace deposits are presently yielding water. Both of the slieLlow KeCler wells are yi.el.ding water. Arllling a new well into the alluvium might be a solution to Mr. Ketler's problem. However, a more detailed study of the local hydrogeologic system would be necessary to make that determination. The Flatiron pit ~.s located in Section 36 to the northwest of the KeCler and Rody wells. Ground water Flows from southwest to northeast in the area, ae indicated on Figure 1. Rased on the information prasented above, it seems unlikely that dewaCering at the Flatiron pit could affect the Ketler well. Calculations indicate that the radius of Che none of influence created by dewatering the pit is about 1,650 feet. This is based on s drawdown ~ 10 feet and a hydraull.c conductivity value of 250 gpd/ft The KeCler well is about 3,600 feet to the southeast of the pit. This is well beyond Che radius of influence of the pit. Rased on the above information, it is our professional opinion that the Ketler and R dy wells dried up because the recharge area for the Leremie Formation to the southwest was eliminated. This occurred because the land was taken nut of irrigation and commercially and residentially developed. The activities at the Flatiron pit had no effect on the Ketler or the R"ddy well. If you have any questions or if we can be of Furt}ier service, feel free to call. Very truly yours, [LErO,NARD RICE CONSULTING WATER ENGINEERS, INC. Mic ae~ma Ground Water Geologist Reviewed by:" La~l7//~//.d~ le E. Bradbeer Ceohydrologist MW/sw 207IFP34 Enc. leoemdRice6bnacltipNbbrEcplneere.Ihc.