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Mr. Roger Schmidt September 2, 2016 Page 12 Iverson Mine/Martin Marietta Pit—Permit Language DRMS Permit Application (January 3, 2011) (Iverson Mine 112 Reclamation Permit Application, Weld County, Colorado) • Reclamation Measures / Material Handling - Site grading will be performed to create stable topography and will be consistent with post closure land uses (p. E2). • Water- Overburden and mine materials will be inert and impacts to local surface water or groundwater quality are not anticipated to occur as a result of mining activities. Lafarge West Inc. will comply with all applicable Colorado water laws and all applicable Federal and State water quality laws and regulations and appropriate storm water management and erosion control to protect the river and existing riparian vegetation (p. E2). DRMS Permit Approved (February 29, 2012) (Iverson Mine, Permit No. M-2011-001, Permit Issuance, Construction Material Operation) • The operation will not adversely affect the stability of any significant, valuable, and permanent man-made structure located within two hundred feet of the Affected Land, except where there is an agreement between the operator and the persons having an interest in the structure that damage to the structure is to be compensated for by the Permittee or if such an agreement cannot be reached, an engineering analysis establishes no damage will occur to the satisfaction of the Division (Recitals Section D.2). Colorado Mined Land Reclamation Board—General Guidance Mineral Rules and Regulations of the Colorado Mined Land Reclamation Board for the Extraction of Construction Materials • All grading shall be done in a manner to control erosion and siltation of the affected lands, to protect areas outside the affected land from slides and other damage. If not eliminated, all highwalls shall be stabilized(§3.1.5[3]). • Disturbances to the prevailing hydrologic balance of the affected land and of the surrounding area and to the quantity or quality of water in surface and groundwater systems both during and after the mining operation and during reclamation shall be minimized by measures including but not limited to: - o Compliance with applicable federal and Colorado water quality laws and regulations, including statewide water quality standards and site-specific classifications and standards adopted by the Water Quality Control Commission.