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I:/ ->ql-d9 ? z- <br />Y ?"?? <br />MORGAN SAND AND GRAVEL, INC. <br />21215 HWY. 52 <br />FORT MORGAN, CO 80701 <br />970-867-8074 <br />PLANT 3 MILES NORTH OF FORT MORGAN ON HIGHWAY 52 <br />? it <br />, <br />September 1.0, 2010 RECEIVED <br />Michael Cunningham t? <br />SAP <br />Division of Reclamation, Mining & Safety a 2,(1 <br />1313 Sherman St. Room 215 ©rsa?+sa;r.' 4' a r4 kr <br />Denver, CO. 80203 <br />RE: Technical Revision Westhoff Pit <br />Dear Michael, <br />This letter is to answer all of the questions that you or the board has regarding the earth <br />dam. <br />(a) The inline Water level control structure will be used that way water will now out of <br />the dam as the level reaches a level of (3 feet).This would also control the rate at witch <br />the water would be discharged out of the dam. <br />(b)The height of the dam has been lowered to (ten feet). The length will be (75 feet) from <br />The East side to West side. The width at the top of dam will be (12 feet). The base of <br />the dam will be (25 feet). The total volume of material to build the dam should be around <br />685 yards. Morgan Sand & Gravel will remove the dam when it needs to be taken out. <br />(c) The maintenance on the dam will be done more in the rainy months. So from April <br />Thru September, there will be more maintenance then thru the Winter months. <br />Inspections will be done weekly in the rainy months if we have heavy rain fall the <br />Dam will. be inspected after every storm. <br />If repair is needed, it will take place after the storm or when it is safe to do so. <br />(d) Map is attached where the dam will be built. <br />(e) To help with wind erosion the top of the dam will be seeded. Also the backside of <br />The dam will be seeded to help with erosion from wind and rainfall. <br />Seeding will done a mixture of native grasses Western Wheat grass Buffalo grass <br />Blue gramma and Oats. The mixture of grass will be seeded at a rate at 91/2 Lbs <br />Per acre.