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~ III IIIIIIIIIIIII III <br /> <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />UcVanmem mf Natural Resources <br />I I I'f Sherman 51.. Room 215 <br />f)cnvrr. Colorado AU!03 <br />1'hriv-' 1 {U71 tf61r-3567 <br />f A%. 1 lU.l I A l?-A I UL <br />May 8, 1998 <br />~~.. <br />~' <br />~~ <br />DEPARTMENT Or <br />NATURAL . <br />RESOURCE:, . <br /> Roy Ramer <br /> <br />Mr. Scott Hoover Governor <br /> <br />B&B Excavating lames 5 Lochhead <br />ErecunveDnerlor <br />P.O. Drawer 249 Michael B. long <br /> <br />Vail, CO 8168 Dimsion Director <br />RE: Technical Adeq uacy Review of New 112 Permit Application #M-98-024, Hidden Valley Pit <br />Deaz Mr. Hoover, <br />This letter is being written to address technical inadequacies within the 112 permit application <br />submitted by your company, #M-98-024, Hidden Valley Pit. The following issues need to be <br />resolved before the Division of Minerals and Geology (DMG) can consider approving your <br />application: <br />1) A written commitment to a topsoil salvage and replacement range is still needed. While the <br />figure of 14" of topsoil is mentioned in several places within the application, it is never <br />specifically cited as the amount to be replaced on the reclaimed slopes. A minimum depth of <br />topsoil must be comitted to prior to approval of the application, in accordance with Rule <br />6.3.4(1)(c)(i) of the Construction Materials Rules and Regulations. <br />2) In Exhibit D, Mining Plan, on p. 26, it is mentioned that topsoil will be stockpiled along the <br />northern and western boundaries to prevent runoff from the undistttrbed azeas from entering the <br />Phase I process ares. Only overburden may be used in the drainage berms surrounding the <br />temporary site. This mistake has been corrected on Fig.4, which shows the new irrigation <br />drainage paths and only mentions the use of overburden in the 2' berm surrounding the site. <br />Please confirm that no topsoil will be used in these berms, in accordance with Rule 3.1.9(3). <br />3) In Exhibit D, Mining Plan, p. 45, paragraph (3); please change the last sentence to read: `'If <br />any subsurface water is encountered, the Division and the Office of the State Engineer (OSE) <br />will be notified immediately to determine the best course of action." <br />4) DMG is requesting a commitment to a specific seed mix for topsoil stockpile seeding. Exhibit <br />E, Reclamation Plan. p.» states that vegetative cover will be established to preserve stockpiles <br />that are no[ replaced in "a reasonable period of time." Rule 3.1.9(1) requires seeding of all topsoil <br />stockpiles left in place longer than one growing season. Please commit to this and to a specific <br />seed mix and seeding rate for the stockpiles. <br />