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SUMMIT ENGINEERING CO <br />PROFESSIONAL ENGINEERS AND LAND SURVEYORS <br />P.O. Box 1897 <br />ALAMOSA, COLORADO 81101 <br />(719)589-6147 FAX(719) 589-6633 <br />EMAIL: seco6147@gwestoffice.net <br />December 22, 2009 <br />Mr. Michael A. Cunningham <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining & Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Robins Rock Pit; DRMS File No. M-2009-053; Preliminary Adequacy Review <br />Dear Mr. Cunningham; <br />Summit Engineering conducted a pre-blast survey of the area near the above captioned Pit on <br />December 9, 2009. We have enclosed photographs and note that the dwellings approximately <br />one mile east north-east of the pit have been abandoned for some time and that the electric <br />service is disconnected and the meter has been removed. <br />The adobe home has a significant portion of the roof missing, and the two mobile homes have <br />significant damage to the plumbing because they have not been properly winterized. In addition <br />they appear to be infested with rodents and are likely to harbor hanta virus. It does not seem <br />likely that these homes are any longer habitable; never the less, no damage due to blasting is <br />evident at these structures. The blue barn and surrounding livestock are owned by Mr. Aniceto <br />Lucero, lessor of the Pit property. Mr. Lucero has informed us that no damage has occurred to <br />this barn or his livestock due to blasting activities. <br />Closer to the pit, the irrigation pump and center pivot sprinkler have likewise not been damaged, <br />and the pond, which is dry has no rock-fall contained within it. Hopefully, these photographs <br />together with this short narrative description satisfy the pre-blast survey requirements. <br />Yours truly, <br />Scott E. Johnson <br />xc: Robins Construction Co., L.L.L.P.