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• • III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depa rlmcnl of Ndiu r, I Resources <br />1313 Sherman SL, Koum 21 S <br /> <br />Denver, Colorado HU?Oi <br />Y <br />ili~ <br />Phone 13011 Hbb 7567 I II <br />FAX: 13031 H3LH106 <br /> DEPARTMENT OF <br /> ~S <br />July 11, 1997 ~ ~U~ <br /> <br />Mr. Paul Banks Roy Romer <br />cavern", <br />AGRA Earth & Environment, Inc. Izmces w~hne,d <br />17301 West Colfax Ave. e.n~°'iveDirc""' <br />Denver, CO 80401 mic hael8 Lnng <br /> D rvuiun Ducr Iw <br />RE: Del Camino Sand and Gravel Mine, File No. M-96-052 <br />Dear Mr. Banks: <br />The Division received your letter on June 30, 1997 requesting an <br />extension to the decision date for the Del Camino Sand & Gravel <br />Mine application. This extension is accepted by the Division and <br />the new decision date is July 18, 1997. <br />In the same letter, it is stated that the applicant accepts Allen <br />Sorenson's slope recommendation contained in his letter of June 20, <br />1997. Please clarify by stating to the affirmative that the <br />operator commits to mining to a slope no steeper than 3:1 as the <br />pit progresses to within 200 feet of the Sinclair pipeline. <br />Regarding a commitment in your letter dated 5-8-97, it is stated <br />under Item #6 that `a water level monitoring plan, including at <br />least five quarters of data, will be submitted to the Division <br />prior to mine start up.' Please clarify by stating to the <br />affirmative that monitoring will include at least five quarters of <br />data before ground water pumping begins and that the plan will <br />continue on at least a quarterly basis throughout the life of the <br />mine. <br />Enclosed are my calculations for the required financial warranty. <br />The amount is $49,450.00. I will be happy to discuss this with you <br />if you have any questions. Please give me a call if you have any <br />questions. <br />Sincerely, ,~ ~ <br />~q,~/ 1~ <br />Gary Curtiss <br />Environmental Protection Specialist <br />Carl Mount, DMG <br />C\WP51\96-OS_'\MQ2. LTR <br />e ft c. ~J4 ~-C_- <br />