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<br /> <br />M~ADNOCK <br />MINERAL SERVICES <br /> <br />• ~IIII~II~II~IIII'~~ <br />F 0 Bay 95 <br />C.,rer CO Bia2~ <br />~3C 3i 3?S~a600 <br />Robert A. 8 Pamela J. Larson <br />Phone/Fax (970) 325-4600 <br />November 7, 1997 <br />Durango Feld Office <br />Division of Minerals & Geolop/ <br />The following material is in response to your adequacy letter of <br />October 30, 1997. <br />EXHIBIT B - Location Map: Enclosed is an enlargement of the drainage <br />above the permit area. The area outlined in red shows the potential <br />watershed. This is approximately 1500' long by 150' wide (a little <br />over 5 acres). The watershed is very limited due to the fact that <br />this drainage is created by a localized fault. The gentler slope <br />above and east of this fault sheds moisture to the north as indicated <br />by the arrows. The volume of runoff from a 1/2" event would produce <br />approximately 70,000 gallons (plus debris). This fault channel has <br />not produced water &/or debris that has crossed the highway in recent <br />history (50 years at least). The area to the north and south of <br />this channel have no evidence of flooding; thus, no damage to the <br />highway has occurred nor is anticipated. <br />Post-mining channeling of the runoff and containment of debris will <br />be addressed as dart of the City of Ouray's planning/permitting <br />process. It is important that the City be the entity to address the <br />final channeling and containment, as part of their storm water <br />control. <br />EXHIBIT C - Mining Plan: In preparing the site, it is proposed not to <br />strip the topsoil because of its thin, rocky nature. 'Five holes were <br />dug along the proposed access road within the permit area. The <br />results were as follows: <br />Hole #1 (at north end of access road): <br />6-7" Topsoil <br />clayey sand intermixed with rounded gravel up to 5" dia. <br />Hole #2 (along access road - south of Hole #1): <br />2-3" Topsoil <br />sandy clay with angular rocks up to 3" dia. <br />Hole #3 (midway along access road - south of,I;ole•#2}: <br />No Topsoil <br />clayey sand (75$) & gravel (25~) w/rocks. up to 2" dia. <br />Hole #4 (along access road - south of Hole #3): <br />No Topsoil <br />• clayey sand (30~) & rocks (70~) up to 5" dia. <br />Hole #5 (along access road - south of Hole #4): <br />3-4" Topsoil <br />sandy clay w/ angular rocks up to 3" dia. <br />These shallow topsoil depths do not warrant stockpiling of this <br />material. <br />Bob Oswald <br />Division of Minerals & Geology <br />484 Turner Drive, Building F #101 <br />Durango, Co 81301 <br />RE: Memphis, File No. M-97-084 <br />Bob <br />U~~'~ :~i._r•r Ali=FILE <br />PUBL;C FILI` COPY Received <br />FILE: ~-9}--084- !l01-1 0 1997 <br />~1TE:_~_ s____- <br />