2015-03-30_INSPECTION - M2015006

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PERMIT #: M-2015-006 INSPECTOR'S INITIALS: MAC INSPECTION DATE: March 30, 2015 OBSERVATIONS The inspection was conducted by Michael Cunningham of the Division of Reclamation, Mining and Safety (Division). Sprague Stone LLC did not have a representative present for the inspection. The Sprague Stone site is located south of Masonville, Colorado off of County Road 27 in Larimer County. This was a pre -operational inspection for a 112 Construction Materials Reclamation Permit. The permit application was submitted to the Division on February 13, 2015 and filed for review on March 2, 2015. The application is currently under review and the decision date is May 31, 2015. The public notice sign with information regarding the permit application was posted at the site entrance. The boundary of the affected land is partially delineated; the operator will be responsible for clearly delineating the entire affected area prior to the commencement of mining. The commodity of interest is sandstone and the proposed affected area is 62.026 acres. The Sprague Stone site is situated on the east side of the Dakota Ridge, which is characterized by sandstone beds dipping to the east. The Sprague Stone site is located on essentially the same foot -print as the formerly permitted Masonville Div operation (M-1985-099). The Masonville Div Reclamation Permit was terminated in April 2014. Therefore, the Sprague Stone operation contain all of the disturbance associated with the Masonville Div operation with the exception of 2.58 acres located on the west side of the Dakota Ridge. The new Operator will essentially operate the site in the same manner as the Masonville Div operation. Active quarry operations will resume in the area where quarrying last occurred. Sandstone extraction will be accomplished through the use of explosives and mechanized equipment. The Division will work with the Operator to develop a blasting plan which ensures that any permanent man-made structures adjacent to the quarry will be unaffected by the mining operation. All of the permanent man-made structures identified during the inspection have been accounted for in the permit application. The Division identified several noxious weeds including diffuse knapweed and thistle; the Division will work with the Operator to develop a weed control plan as part of the application review process. The proposed processing of the sandstone includes screening the sandstone fines over a grizzly, followed by sizing of the stone using a hydraulic shear. The sandstone product will be stored on the west side of the permit area (behind the Dakota Ridge) and on the east side of the permit area along County Road 27. The Operator is proposing to limit the amount of disturbance at the quarry through a phased mining and reclamation plan. The amount of area which can be disturbed at any point in time will be limited by the amount of financial warranty which is posted by the Operator. The proposed final land use of the site is rangeland. The slopes will be reclaimed to a final grade of 5H:1V to 3H:1V and topsoil will be replaced at a depth of 4" - 6". Following the placement of topsoil, the site will be seeded with a dryland pasture grass mix. The Division did not make any observations which would prevent the approval of the permit application. This concluded the inspection. Inspection Contact Address Matt Sprague Sprague Stone LLC 116 Sprague Avenue Berthoud, CO 80513 Page 2 of 3