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SUMMIT ENGINEERING C 0 1 ENGINEERS & LAND SURVEYORS <br /> Mail: P.O. Box 1897 Alamosa, CO 81101 P: 719-589-6147 E: summitengco@gmail.com <br /> maintain a slope direction and magnitude similar to the natural grade. This is set <br /> forth in the reclamation plan as well. However, it should also be noted that overall <br /> disturbance to the hydrologic balance is not anticipated due to the and conditions <br /> of the site, it's remote nature, and natural terrain. The current area of this pit has <br /> not experienced any significant hydrologic changes or complications and its <br /> conditions are expected be consistent throughout the pit boundary. Further, any <br /> precipitation upon the reclaimed area will migrate to groundwater level, at <br /> whatever depth encountered, without any additional resistance by the reclaimed <br /> surface. Annual precipitation for the area is very low, and normally less than 9 <br /> inches. Any runoff from the mining area will and the side of the mesa will be <br /> detained at the bottom of the hill by a graded depression and ditch. Once <br /> detained, runoff will infiltrate into the soil. The south end of the site adjacent to <br /> the field will also be graded in such a manner as to be slightly below native <br /> grade, or have a berm protection when necessary. <br /> m) Deposit will be processed on-site. However, the gravel and sand mined at this <br /> location will not be processed in any way other than normal crushing, screening, <br /> and stockpiling operations. <br /> n) No incidental products are anticipated. <br /> o) Explosives have been, and will be used in conjunction with mining operations. <br /> Effects of blasting are not expected to reach beyond the permit boundary. In <br /> 2007, Merritt LS, LLC was hired to perform a study on the effects of blasting <br /> within the immediate area of the Robins Rock Pit. This report can be found in the <br /> following pages within this exhibit. The operator will comply with those <br /> recommendations included in the Merrit report, and with the "Blasting Vibration <br /> Control Plan" outlined in the DRMS review by Allen Sorenson dated December <br /> 19, 2007 (DRMS File No. M-2007-080). Furthermore, a pre-blast survey of the <br /> area was conducted around the area of the Robins Rock Pit that showed there <br /> were no dwellings being lived in within a mile of the site. This survey was filed <br /> with the DRMS under PERMIT FILE - 1/19/2010, 7:17:21 AM-JWD, is included <br /> within this exhibit. Additionally, a letter dated December 18, 2009 (DRMS <br /> PERMIT FILE - 1/19/2010, 7:15.50 AM-JWD) was sent by Mr. Aniceto Lucero <br /> claiming that he had experience no damage on his property (which include the <br /> only man made structures within 200 feet of the permit boundary) from blasting <br /> or mining operations. A copy of this letter is provided herewith. Finally, an <br /> agreement was signed by the applicant and Aniceto Lucero (DRMS PERMIT <br /> FILE — 1/25/2010, 7-12:32AM-JWD-1) stating that Robins Construction, L.L.L.P. <br /> "will make any necessary monetary compensation to the lessee that is supported <br /> by invoices for materials or labor in connection with repairs to any manmade <br /> structures on the lessor's property."A copy of this letter can be found herewith. <br /> Job # 1200710MP - C Pagel 15of79 <br />