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~.1~ "'"~ <br />ZO Resources [orp. <br />.~42 Clarkson Street <br />Denver, [0 80218- <br />303) 830.1188 <br />_or: 830.1199 <br />Denver Boise <br />.nr.eroresomces.com <br /> <br />o@eroresources.com <br /> <br /> <br />--^- ------ RECEIVED-- - --- --------- <br /> <br />$Ep 1 3 [OOe <br /> <br />Division-of-Reclamation, <br />Mining and Safety <br />May 10, 2006 <br /> Mr. Larry Thompson <br /> Thompson Properties <br /> P.O. Box 3 <br /> -Granby, CO 80446 - <br /> Re: Hydrological Assessment for Gravel Pit Expansion, Granby, Colorado <br /> Deaz Mr. Thompson: <br /> This letter constitutes ERO Resource Corp.'s (ERO) report for a limited hydrological __ __ <br /> assessment in support of the proposed gravel pit expansion onto property owned by <br /> Thompson Properties northwest of Granby, Colorado. The purpose of the limited <br /> hydrological assessment was to determine the potential effect of the proposed gravel pit <br />- -- - expansion on waterwells in the surrounding area: The assessmentconsisted of asite - - -- - - - -- <br /> reconnaissance and areview ofpublicly-available infornation. <br /> Site Reconnaissance <br /> ERO conducted a site reconnaissance of the property and existing gravel pit operation <br /> on May 5, 2006. The property is located on a ridge made up ofglacially-deposited sand, <br /> gravel and cobbles. The property is generally flat and c_ove_red with grasses, weeds and_ _ <br /> sagebrush. Asingle-family residence (Hahn residence) and outbuildings are located in <br /> the western portion of the propeRy. A dirt driveway accesses the property from County <br /> Road 61 to the east. Single-family residences are located adjacent to the northeast corner <br />--- - - -of the property (Mirabito), northeasYof the property (Hansen), adjacenf to the southeast- <br /> comer (Spurlin), and south of the property (Goodwin and Holley) (Figure 1). <br />The existing gravel pit has operated since the 1980s and has removed about 40-50 feet <br />- -ofsand; gtaveYand-cobbles down to the stiale bedrock at-the western end of the ridge. <br />During the site reconnaissance, a limited amount of water was observed in the eastern <br />side of the pit. The water is likely rain and snowmelt that has perched on top of the low- <br />_ __ _ _ _ _ _permeability_shale at the bottom.of the pit.. Groves ofwillows-and gassy-meadows-were- <br />observed to the north and south of the property. These willows and meadows are likely in <br />areas where ground water that has perched on the shale bedrock is seeping out on either <br />side of the ridge. <br />Hydrology <br />ERO reviewed records at the Colorado Division of Water Resources for water wells <br />on and-around the proposed gravel pit expansion property. The well records included- - <br />rare~oohfe <br />- - _ _ - Irbrucllesareas - <br />ooddr6rrimasau <br />