2019-09-13_PERMIT FILE - M2018051

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4 Black Mountain Sand Weld LLC 500 Main St. Suite 1200, Fort Worth,TX 76102 (817) 698-9901 line or relocate the line within the 50' Utilities Easement corridor shown on confidential Exhibit C6.1— Exhibit C6.2. New maps are provided in Attachment 2. Item 15—Exhibit D—Mining Plan Exhibit D has been modified to include additional details of mining operations, earthmoving methods, excavation practices, and highwall geometry.A modified Exhibit D is included in Attachment 3. Item 16—Utilities within the Affected Lands Exhibit C2: Pre-Mining Map has been updated to reflect the location of all known utilities and utility easements within the proposed permit boundary, including the location of Morgan County Quality Water District's water line, Morgan County underground power line, Crown Castle Antenna Lease,the Kinder Morgan box, and the Wiggins Telephone fiber optic line.As discussed above, Black Mountain has contacted these companies to begin discussions regarding the location of their utilities and the prospect of relocating those utilities.A 200-foot buffer has been included on the maps around some of these utilities as a precaution.Additionally,the proposed utility easement corridor for all utilities has been shown on confidential Exhibit C6.1—Exhibit C6.2. Black Mountain proposes to continue discussions regarding the relocation of these utilities as site construction activities begin.The water line and powerline are located on land proposed for mining starting in year 7 and the Wiggins Telephone line runs through land proposed for mining starting in at the end of year 2. If agreements cannot be obtained prior to the deadline for relocation, the lines will be mined around, and the 200-foot buffer will remain. New pits will be built and engineered, and ramps and haul roads will be built in and out of the new pit areas.This may cause an adjustment in the timing of mining certain areas. New maps are provided in Attachment 2. Item 17—Groundwater Monitoring Plan Black Mountain is moving forward with the installation of monitoring wells within the buffer area of the permit boundary and within the Hay Gulch aquifer to gather baseline groundwater data as well as monitor water quality and quantity throughout the life of the mine. Black Mountain will provide copies of the approved permits for these monitoring wells from the Colorado Division of Water Resources to the state once available.Additionally, Black Mountain will provide quarterly quality and quantity data from these wells to the division as part of the annual report. The proposed water quality testing parameters shown on Table E3 of the application were taken directly from Tables 3 and 4 of the State of Colorado Water Quality Commission's(WQCC) Regulation No.41,The Basis Standards for Groundwater(5 CCR 1024-41),which pertain to agricultural standards. Black Mountain feels the agricultural standards more accurately represent the water use in the area, which is mainly irrigation and livestock watering. Much of the water from the nearby Empire Reservoir is taken out each year to provide water for irrigation and livestock watering.Table 1,which the division references, is directed more towards drinking water,which Black Mountain does not believe accurately represents the main water uses of the area. Item 18—Seed Mixture Black Mountain proposes to use the Weld County Sandy Site Mix,which is shown on page E2 of Exhibit E,for all seeding and reclamation activities onsite, including vegetating topsoil stockpiles to protect from erosion.