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Home My WebLink About1.00 General Application MaterialsTable of Contents Page 1 of 2 Contents (TAB # - Title of Document/Section) 1-Introduction 1-Professional Qualifications 1-Application Form & Payment Agreement Form) 1-Ownership, Warranty Deed, Statement of Authority 1-Adjacent Property Owners and Mineral Owners and Lessees & Title Commitment 1-Fees 2-Project Description & Permit Process Graphic 3-Vicinity Map 3-Site Plan 4-Grading and Drainage Plan 5-Reclamation and Landscape Plan 5-Landscape Plan 6-Impact Analysis 6-Improvements Agreement 7-Traffic Study 8-Water Supply/Distribution Plan & Waiver Request 8-Wastewater Man./Treatment Plan & Waiver Request 8-Floodplain Analysis 9-Article 7 Standards 9-Section 7-1001 Industrial Uses 9-Section 7-1002 Gravel Extraction 9-Section 7-107 Access and Roadways 9-Section 7-1002i Enforcement and Waiver 10-Appendix 1 – Noise Analysis 11-Appendix 2 – Environmental Impact Analysis 12-Appendix 3 – Geologic Hazard Analysis Table of Contents Page 2 of 2 13-Appendix 4 – CDRMS Application The CDRMS Application also includes the following information (See internal Table of Contents)  Existing Conditions Map  Mining Plans  Reclamation Plans  Water Information  Wildlife Information  Soils Information  Vegetation Information  Climate Information 14-Appendix 5 – SPCC Plan 15-Appendix 6 – Stormwater Management Plan 16-Appendix 7 – Other Items -Wetlands Delineation Report -Letter from Town of Silt -Memo from fire district -Ditch Relocation Permission Letter -Surface Use Agreement Waiver -Proposed Fuel Storage Trailers -Water Augmentation Memo & Letter -NTC Letter From Garfield County and Response Outline -CDOT Permit Application North Hangs Mine Garfield County Land Use Change Application February 2023 Updated July 2023 By: Western Slope Materials, Inc. Represented by: Contents Introduction ................................................................................................................................ 1 Professional Qualifications ......................................................................................................... 5 Application Form ........................................................................................................................ 6 Ownership .................................................................................................................................. 7 Adjacent Property Owners and Mineral Owners and Lessees .................................................... 8 Fees ........................................................................................................................................... 9 Project Description ....................................................................................................................10 Vicinity Map ..............................................................................................................................19 Site Plan ...................................................................................................................................20 Grading and Drainage Plan .......................................................................................................21 Reclamation and Landscape Plan .............................................................................................24 Landscape Plan ........................................................................................................................26 Impact Analysis .........................................................................................................................27 Improvements Agreement .........................................................................................................33 Traffic Study ..............................................................................................................................34 Water Supply/Distribution Plan ..................................................................................................35 Wastewater Man./Treatment Plan .............................................................................................36 Floodplain Analysis ...................................................................................................................37 Article 7 Standards ....................................................................................................................38 Section 7-1001 Industrial Uses .................................................................................................44 Section 7-1002 Gravel Extraction ..............................................................................................46 Appendix 1 – Noise Analysis .....................................................................................................79 Appendix 2 – Environmental Impact Analysis ............................................................................80 Appendix 3 – Geologic Hazard Analysis....................................................................................81 Appendix 4 – CDRMS Application .............................................................................................83 Appendix 5 – SPCC Plan ..........................................................................................................84 Appendix 6 – Stormwater Management Plan ............................................................................85 Appendix 7 – Other Items .........................................................................................................86 ` North Hangs Mine February 2023 1 Introduction The North Hangs Mine is a proposed sand and gravel operation located approximately 1 mile west southwest of Silt, CO located along the Colorado River just north of Interstate 70. The operation will excavate, process, and send offsite construction materials from a 72.8 acre permit and affected are. Access will be from the existing County Road 346 connection for the property. The owner of the land is North Hangs Ranch LLC. The operator and permittee is Western Slope Materials LLC. The current site condition is predominantly rangeland. The mined portion of the site will be reclaimed to a groundwater lake and surrounding rangeland. Details of mining and reclamation plans can be seen on the maps in Appendix 4. The North Hangs Mine will operate as a new construction materials source for Western Slope Materials as they wind down operations at their Grand River Park Pit. The Grand River Park Pit is currently operating southeast of the North Hangs property, on the South side of I-70. With North Hangs, Western Slope Materials will continue to serve the local construction market with quality materials for years to come, without increasing impacts to the local environment or public infrastructure. 1. Plans and Goals Western Slope Materials is committed to beginning impact mitigation and minimization efforts as soon as possible when all conditional approvals for this gravel mine are in place. By beginning mitigation work several years before the commencement of mining, items such as landscaping, specifically tree plantings and infilling, will be more mature and effective when mining begins. With approval of this SUP, mitigation and other pre-mining activities will be able to move forward, a benefit to both the operator and the community at large. Western Slope Materials has developed mining and reclamation plans that will see the North Hangs Mine operate with minimum impact on the surrounding community throughout its life. These plans include phased mining, concurrent reclamation, wetlands development, screening and berms, and operational best management practices. The North Hangs Mine will operate in multiple mining phases that allows for concurrent reclamation. Mining will consist of excavating raw material to supply Western Slope Materials needs in the local construction market. Reclamation will see the site become a lake surrounded by wetland and riparian fields. These stages can be visualized in Figure 1 and 2. North Hangs Mine February 2023 2 North Hangs Mine February 2023 3 Figure 1. North Hangs Mine – Mining North Hangs Mine February 2023 4 Figure 2. North Hangs Mine – Reclamation North Hangs Mine February 2023 6 Application Form The Garfield County ‘Land Use Change Permit Application Form’ is included in this application package. The pre application summary is also attached. Community Development Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601 (970) 945-8212 www.garfield-county.com LAND USE CHANGE PERMIT APPLICATION FORM TYPE OF APPLICATION Administrative Review Development in 100-Year Floodplain Limited Impact Review Development in 100-Year Floodplain Variance Major Impact Review Code Text Amendment Amendments to an Approved LUCP LIR MIR SUP Rezoning Zone District PUD PUD Amendment Minor Temporary Housing Facility Administrative Interpretation Vacation of a County Road/Public ROW Appeal of Administrative Interpretation Location and Extent Review Areas and Activities of State Interest Comprehensive Plan Amendment Accommodation Pursuant to Fair Housing Act Pipeline Development Variance Time Extension (also check type of original application) INVOLVED PARTIES Owner/Applicant Name: ________________________________________________ Phone: (______)_________________ Mailing Address: ______________________________________________________________________ City: _______________________________________ State: _______ Zip Code: ____________________ E-mail:_______________________________________________________________________________ Representative (Authorization Required) Name: ________________________________________________ Phone: (______)_________________ Mailing Address: ______________________________________________________________________ City: _______________________________________ State: _______ Zip Code: ____________________ E-mail:_______________________________________________________________________________ PROJECT NAME AND LOCATION Project Name: _____________________________________________________________________________________ Assessor’s Parcel Number: ___ ___ ___ ___ - ___ ___ ___ - ___ ___ - ___ ___ ___ Physical/Street Address: ________________________________________________________________ Legal Description: ______________________________________________________________________ _____________________________________________________________________________________ Zone District: ___________________________________ Property Size (acres): __________________ 2179 092 00 106 North Hangs Mine February 2023 9 Fees A certified check is enclosed for this application. PAYMENT AGREEMENT FORM GARFIELD COUNTY (“COUNTY”) and Property Owner (“APPLICANT”) ______ ____ ______________________________________________________________________ agree as follows: 1. The Applicant has submitted to the County an application for the following Project: __________________. 2. The Applicant understands and agrees that Garfield County Resolution No. 2014-60, as amended, establishes a fee schedule for each type application, and the guidelines for the administration of the fee structure. 3. The Applicant and the County agree that because of the size, nature or scope of the proposed project, it is not possible at this time to ascertain the full extent of the costs involved in processing the application. The Applicant agrees to make payment of the Base Fee, established for the Project, and to thereafter permit additional costs to be billed to the Applicant. The Applicant agrees to make additional payments upon notification by the County, when they are necessary, as costs are incurred. 4. The Base Fee shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board of County Commissioners for the consideration of an application or additional County staff time or expense not covered by the Base Fee. If actual recorded costs exceed the initial Base Fee, the Applicant shall pay additional billings to the County to reimburse the County for the processing of the Project. The Applicant acknowledges that all billing shall be paid prior to the final consideration by the County of any Land Use Change or Division of Land. I hereby agree to pay all fees related to this application: Billing Contact Person:_____________________________________ Phone: (_____)___________________ Billing Contact Address: ___________________________________________________________________ City: ______________________________________________ State: _______ Zip Code: ________________ Billing Contact Email: _____________________________________________________________________ Printed Name of Person Authorized to Sign: ___________________________________________________ ______ ________________________________ (Signature) (Date) CERTIFICATION OF MINERAL OWNER RESEARCH This form is to be completed and submitted with any application for a Land Use Change Permit. Mineral interests may be severed from surface right interests in real property. C.R.S. § 24-65.5-101, et seq, requires notification to mineral owners when a landowner applies for an application for development from a local government. As such, the landowner must research the current owners of mineral interests for the property. The Garfield County Land Use and Development Code of 2013 (“LUDC”) Section 4-101(E)(1)(b)(4) requires written notice to owners of mineral interests in the subject property in accordance with C.R.S. § 24-65.5-101, et seq, “as such owners can be identified through the records in the office of the Clerk and Recorder or Assessor, or through other means.” This form is proof of applicant’s compliance with the Colorado Revised Statutes and the LUDC. The undersigned applicant certifies that mineral owners have been researched for the subject property as required pursuant to C.R.S. § 24-65.5-101, et seq, and Section 4-101 (E)(1)(b)(4) of the Garfield County Land Use and Development Code, as amended. As a result of that research, the undersigned applicant certifies the following (Please initial on the blank line next to the statement that accurately reflects the result of research): I own the entire mineral estate relative to the subject property; or Minerals are owned by the parties listed below The names and addresses of any and all mineral owners identified are provided below (attach additional pages as necessary): Name of Mineral Owner Mailing Address of Mineral Owner I acknowledge I reviewed C.R.S. § 24-65.5-101, et seq, and I am in compliance with said statue and the LUDC. _____________________________________________ _________________________________ Applicant’s Signature Date 02/28/23 See Attached Listing x RESEARCH METHODOLOGY I was engaged to research the mineral ownership and any lessees of said minerals in Government Lots 3 & 4 and the West Half of the Southwest Quarter of Section 9, Township 6 South Range 92 West of the 6th Principal Meridian, near Silt CO, Garfield County. I conducted a thorough research project of the chain of title, from patent to present. There are two patents for the subject lands, said patents conveyed the surface and mineral interests to the patentees. The deed recorded at Reception Number 166614 reserved one-quarter (1/4) of the oil, gas mineral interests to the Grantor, Barney Wright. No other reservations of the subject minerals occurred until Gypsum Ranch LLC conveyed the subject surface lands to North Hangs Ranch LLC, through recordation of the Warranty Deed at Reception Number 932600. This deed includes all sand, gravel and aggregates, however reserves and excepts “all of Grantor’s right, title and interest in all oil and gas in, under and that may be produced from the property.” Hence, Gypsum Ranch owns three-quarters (3/4) of the mineral rights. The mineral interests of Barney Wright reserved in the aforementioned deed have passed down through numerous generations, a list of current owners is provided herewith. All addresses provided below were found in recorded documents in the Garfield County Clerk and Recorder’s Office and are the most current available. This search is effective through 1/14/2022. This research was updated through 7/01/2022 and updated again through 8/01/2022. This search has again been updated. No changes in ownership or leasing were found, through 2/17/2023. Mineral Rights Owners and Mailing Addresses: Gypsum Ranch LLC 818 Colorado Avenue Glenwood Springs CO 81601 Shirley Jones 8073 Hemingway San Diego CA 92102 Barbara L Hardie 2187 E Gauthier Road #330 Lake Charles LA 70607 Fossil Creek Land Company PO Box 485 Mustang OK 73064 Kathleen Lambert 3817 Selkirk Road Sandpoint ID 83864 Daniel Nichols PO Box 1666 Orange CA 92856 Betty Jean Lindley 1065 Pine Drive Mohave Valley AZ 86440 McClung Trust 4200 Summers Lane #58 Klamath Falls OR 97603 Carol Sanger 1507 Oro Grande Yuba City CA 95993 Riley W McClung 10550 County Road 319 Rifle CO 81650 Don McClung 181 Willow Circle Drive Parachute CO 81635 Karen McClung 172 South Ridge Court Parachute CO 81635 Jerry L Bussell Gene A Bussell 6036 Bayhill Drive Farmington NM 87402 TEP Rocky Mountain LLC 3050 Post Oak Blvd Suite 1500 Houston TX 77056 Elmer Blackmore 650 Birch Court Rifle CO 81650 Colleen Damrow 4278 Round Lake Road Klamath Falls OR 97601 Kenneth R Kelley 7703 S Elm Court Littleton CO 80122 Kimmer Lee Jepson 553 Rio Borde Court Grand Junction CO 81507 Delma Jean Cain 1040 E Osborn #601 Phoenix AZ 85014 Victoria E Glover Lee Poteet 4035 Valley Drive Pueblo CO 81008 Garry Lee Wright 20285 County Road 8 Meeker CO 81641 Mineral Rights Lessees: Williams Production RMT (An Internet search indicates this is the current mailing address) 1515 Arapahoe Street Tower 3 Suite 1000 Denver CO 80202 Above Lease Assigned to: CR Pool LLC PO Drawer 790 Glenwood Springs CO 81602 Antero Resources Piceance Corporation (See Below) 1625 17th Street Denver CO 80202 An Internet Search finds Antero Resources at the following address: 1615 Wynkoop Street Denver CO 80202 North Hangs Mine February 2023 8 Adjacent Property Owners and Mineral Owners and Lessees A list and a map of real property within a 200-foot radius of the subject property is given below. Parcel # Owner 217908100194 ASPIRI ENTERPRISES LLC 2125 1ST AVENUE APARTMENT 2704 SEATTLE WA 98121 217909200085 STATE OF COLORADO DIVISION OF WILDLIFE 6060 BROADWAY DENVER CO 80216-1029 217908100527 SHIDELEROSA LLLP 1411 COUNTY ROAD 316 SILT CO 81652 No Parcel Number Interstate 70 Colorado Department of Transportation 2829 W. Howard Pl. Denver, CO 80204 A list of mineral estate owners in the Subject site is given below: Parcel # Owner 217909200106 North Hangs Ranch LLC 950 Smile Way York Pa 17404 North Hangs Mine February 2023 5 Professional Qualifications This report was produced by Ben Langenfeld (P.E.# 0047151), a Professional Engineer registered in the State of Colorado. North Hangs Mine February 2023 7 Ownership The owner of the land to be mined in North Hangs ranch LLC. A deed showing the owner’s fee title interest in the land for which a Land Use Change is proposed is included in this application package. North Hangs Mine February 2023 10 Project Description Western Slope Materials LLC proposes to mine the North Hangs Mine gravel deposit to support its construction materials activities in the Silt, CO area. Material will be mined, crushed, screened and washed at the North Hangs Mine before being transported offsite for further use. Material from this operation will be used in a variety of necessary uses in the area including infrastructure projects, road and highway maintenance, the production of readymix concrete and asphalt at off-site facilities, residential, and commercial construction. There is sufficient topsoil and overburden onsite to successfully reclaim the site to its final condition of a lake with rangeland slopes. No asphalt manufacturing will take place onsite. Western Slope Materials intends to use the North Hangs Mine to support its ongoing presence in the community. To that end, it has designed the operation to incorporate upfront landscaping work, wetlands development, and final reclamation into a lake and associated wetlands. This Project Description will outline the need for the operation, provide detailed information about the project including timelines, schedule of operations, employee presence, project size, and explanation of all functional aspect of the proposed development including mining and reclamation plans. Table 1. Proposed approximate timeline of approvals and operational events Date Pending Action Stage 2023 SUP Approval/DRMS approval Mining 2024 Landscaping & Access installed Mining 2024 Augmentation Plan secured Mining 2024 Wetlands plan approval from USACOE Mining Between 2025 and 2030 Operations beginning Mining Between 2035 and 2040 Mining operations finish. Final reclamation commences. Mining Between 2036 and 2041 Reclamation of mining areas complete. Reclaimed Between 2037and 2042 Final reclamation of all disturbance completer Reclaimed Between 2039 and 2044 Reclamation is determined complete by CDRMS. Site is releases. Reclaimed *All dates are approximate timeframes and subject to change due to market demand. 2. Statement of Need Western Slope Materials (WSM) has provided the area with the highest quality aggregates for over a decade. Locating, managing and conserving sand and gravel reserves in Garfield County is of the highest priority for local producers and the County alike as it is a limited resource. As the Colorado River valley has become developed and populations have grown, opportunities to secure gravel reserves have become increasingly fewer. After years of North Hangs Mine February 2023 11 research and study, Western Slope Materials has concluded that only a handful of such sites actually exist. With typically long permitting durations, WSM recognizes the need to start the process well in advance of the actual mining activities occurring. The North Hangs site provides an excellent resource that can be utilized to support projects, maintenance and development while being responsibly managed for years to come. An ancillary benefit to a site like this will be the opportunity to create future water storage if future approvals are able to be obtained. 3. Mining Stage A phased mining plan will be used to minimize the cumulative impacts of the mining operation. Concurrent reclamation will facilitate the healthy development of expanded and enhanced wetlands on the property while mining takes place. Berms and buffers will minimize the offsite impacts of the operation. Figure 2 shows a render of what the site will look like during mining. The start of operations at the North Hangs Mine is currently scheduled to occur in 2025-2026. There are items that WSM will ultimately need to have in place, including a water augmentation plan and an approved wetlands plan from the Army Corps of Engineers that will require significant time to develop. These items however, are not required until specific activities in the mining timeline occur. For example, a wetlands mitigation plan through the U.S. Army Corps of Engineers is not required until wetlands are disturbed, an event that will occur with the beginning of Area B several years into mining. Similarly, the water augmentation plan will not be required until groundwater is exposed during mining, which will occur early in mining, but not for several years from the time of this application. Conditional approval of this SUP by the County will allow early development work to be conducted onsite. This early development work will maximize the effectiveness of impact mitigation efforts over the life of the mine. No wetlands will be disturbed without an approved mitigation plan and/or permit from the USACOE. No groundwater will be exposed without an augmentation plan in place. Mining & Reclamation Plans The site of the proposed North Hangs Mine is 72.8 acres and is currently rangeland/shrubland (see Map C-1). The Bernudy Ditch (WDID 4500524)1 is located within the permit area. The North Hangs Mine will be accessed from County Road 346. Mining will take place in two principal phases. The first phase will mine around the Bernudy Ditch and wetlands onsite. The second phase will mine out the ditch path and associated wetlands. Following mining of Area A, wetlands will be established as part of reclamation that are greater in total area than the wetlands to be disturbed by mining. Also, the Bernudy Ditch will be rerouted via a buried pipe around the mining area. Maps C-1 shows the mining plan. A 20-ft wide maintenance easement will be recorded upon installation of the pipe reroute. Map G-2 shows the pipe reroute details. 1 https://dwr.state.co.us/Tools/Structures/4500524 North Hangs Mine February 2023 12 Prior to beginning activities on the site, the boundaries of the affected area will be clearly marked. Signs and markers will be posted at the mine entrance listing the name of the Operator, Western Slope Materials, and the operation name, “North Hangs Mine”; a statement that a reclamation permit for the operation has been issued by the Colorado Mined Land Reclamation Board; and the DRMS permit number. The current access to the property will be used for mining (Maps C-1 & C-2). Internal roads and ramps will be used throughout the life of the mining operation as needed and will all be reclaimed. Map C-2 shows the total mining extents. Map C-4 shows a snapshot of mining and reclamation activity as it progresses. Topsoil and overburden will be stripped at North Hangs Mine and placed in stockpiles and berms. This stripping will take place in advance of mining of areas but is not anticipated to happen all at once. Map C-3 shows the topsoil stripping in advance of mining in the cross sections. Berms will be installed at the start of operations on the site as part of stormwater controls (Maps C-2). Further details on the berms can be seen on Map G-1. Topsoil that is stripped and not required for the construction of the berms will be immediately placed as part of contemporaneous reclamation, stockpiled on-site in the topsoil storage area, or shipped offsite. Temporary stockpiles of overburden or topsoil required for reclamation will typically be 20 feet in height. Temporary stockpiles will be located in the designated area shown on Map C-2. Overburden present on site will be stripped during mining and either placed directly on mined out ground as part of reclamation, stored in the stockpile area, or be sold as fill. Mining to final slopes and the direct placement of overburden onto reclamation slopes will reduce the need to stockpile overburden material and shorten the time that it will take to reclaim the mine. Details on topsoil and overburden quantities and material balance can be found in the CDRMS permit exhibits attached as Appendix 4. The groundwater table is roughly seven feet below ground level based on site investigations. Since groundwater will be exposed/encountered during mining, the entire pit will be dewatered using a pump. Details regarding this dewatering can be found in CDRMS Exhibit G in Appendix 4. Throughout the mine life the minimum setbacks shown on Map C-2 will be maintained. All mining will be within the 100-year floodplain, but no permanent fill will take place in this area. A floodplain impact analysis has been conducted and can be found in this application with the Floodplain Development Permit. Storm water control berms and stockpiles will be present during mining but removed during reclamation. Additionally, the excavation of topsoil and overburden from the site will create storage volume for storm and flood events onsite. See Map G-1 and Exhibit G of the CDRMS application in Appendix 4 for more information on surface water management. Further details of mining and reclamation activities can be found in the CDRMS permit application in Appendix 4. North Hangs Mine February 2023 13 Wetlands Western Slope Materials commissioned a wetlands survey of the site conducted by Environmental Solutions Inc (ESI) prior to any disturbance to determine the extent of wetlands that are present onsite. This survey is attached to the CDRMS application Exhibit J. Figure 4. shows the extent of wetlands as mapped during a survey conducted by Environmental Solutions Inc, see the attached ‘Wetlands Delineation Report’, found in Appendix 7. Area A will be mined in such a manner as to leave a setback of at least 35 feet from all existing wetlands. Prior to the initiation of Area B mining, Area A will be back-filled and allowed to revert to wetlands (see Map F-1). These backfilled portions of Phase 1 will be intentionally developed as wetlands to mitigate anticipated future wetland disturbances onsite. This new wetland area will be 5.9 acres in size, larger than the 3.8 total acres of wetlands that are currently cataloged as existing on the site. By creating a wetland that is larger than the total amount of wetlands currently on the site, WSM is assuring that mining that disturbs wetlands will not have an overall deleterious effect on the wetlands on the site. It is in this manner that the overall area of wetlands contained within the affected parcel will either remain the same or will increase in size as mining progresses. The value of the property as a wildlife area will be greatly enhanced with this increase in wetland, groundwater lake and edge habitat (see Wildlife/Vegetation below). No wetland disturbance will take place prior to USACOE approval of a mitigation plan. Figure 3. Existing 3.8 acres of wetlands as determined during site survey. Figure 5. indicates the extent of wetlands that will exist after all reclamation is complete. The wetlands in the southeast section of the site will be completed prior to the start of Area B mining. This wetland will encompass 5.9 acres. North Hangs Mine February 2023 14 Figure 4. Final extent of proposed wetlands after reclamation is complete. Figure 5 gives the existing view that an automobile driver traveling eastbound on I-70 has of the wetland area on the southeastern portion of the permit area. During Area A mining, this area of the site, excluding the existing wetlands, will be mined first. Prior to the start of mining in Area B, this area will be backfilled and allowed to revert to wetlands. The total area that will be allowed to convert to wetlands prior to the start of Area B is 5.9 acres, more than the 0.23 acres of wetlands currently existing in this area, and more than the total of 3.8 acres of wetlands mapped on the entire site by Environmental Solutions Inc. By completing the reclamation of this section of the site prior to the start of Area B, WSM will be achieving two goals: 1) reducing the visual impacts of mining to the I-70 travel corridor and 2) mitigating the effects of mining on the site’s wetlands inventory. North Hangs Mine February 2023 15 Figure 5. View of existing wetlands captured from perspective of automobile driver looking northeast from eastbound I-70. This view will remain essentially unchanged after this area is mined and reclaimed. Prior to disturbing any wetlands onsite, the applicant will secure any applicable US Army Corps of Engineers permits. Conditional approval of this SUP and Mitigation Plan will enable WSM to obtain the required US Army Corps of Engineers permits. Western Slope Materials plans to have constructed and enlarged the total area of wetlands on the site before any wetlands are disturbed. Water Consumption Water for the operation will be purchased as needed. Exposure of groundwater and dewatering of the mine will require a substitute water supply plan (SWSP), augmentation plan, and a gravel well permit. Water consumption for the North Hangs Mine will fall into five main categories. • Control Dust on the Haul Roads and Excavation Areas • Control Dust for Crushing and Screening Plant Operations North Hangs Mine February 2023 16 • Wash Plant Operations • Loss of groundwater to evaporation Due to the fact that the majority of mining will take place below the water table, material excavated from the mine will be inherently wet and thus pose a low risk of generating excessive dust. Water application for dust control on haul roads and excavation areas will take place as needed. Active stockpiles and others may require additional watering to ensure material stays wet. Additional watering may be needed during very dry windy conditions during mining operations. The facility manager will determine when and where this is needed during operations. Long term topsoil stockpiles will be vegetated to minimize water consumption for dust control as well as to prevent soil loss from said stockpiles. The crushing/screening plant uses water to control dust with water sprays at the entrance and on the screen deck. It is anticipated that the material will not require a large amount of water to control dust during processing due to its inherently wet nature. The wash plant will be used to remove fines from the material. This will produce fines in the bottom of the wash ponds adjacent to the plant. These ponds will be inspected monthly for capacity. Fines will need to be removed periodically from the wash ponds. The frequency of this clean out will depend on production rates. Fines removed from the wash ponds via cleanout will either be sold as a product or mixed in with the backfill in the pits. These fines will never be placed outside of storm water controls. An augmentation plan will be required to offset the evaporative losses from the groundwater lakes created as part of the final use of the mine. Until such an augmentation plan is in place and approved by the State of Colorado, no groundwater exposure will take place. WSM proposes to have the SUP and the Mitigation Plan conditionally approved prior to the finalization of an augmentation plan, which will be in place before the start of mining (see timeline Table 1). Similarly, the CDRMS permit will be limited to above groundwater excavation until an augmentation plan is approved. Water augmentation plans in the State of Colorado require approval from the Colorado Division of Water Resources and Colorado water courts. This process involves months of review and public comment in most cases. Furthermore, the water requirements for augmentation are dependent on approved mining and reclamation plans from State and Local permits. Therefore, water augmentation plans are typically pursued following the issuance of State reclamation permits and Local land use approval. Western Slope Materials will apply for its water augmentation plan once the Garfield County use permit and Colorado Division of Reclamation, Mining, and Safety permit are issued. To facilitate conditional approval of the Garfield County use permit, a will-serve letter from West Divide water conservancy district is included to demonstrate that water is available to meet North Hangs augmentation needs when the time comes. North Hangs Mine February 2023 17 Timetable An approximate maximum timetable for the North Hangs Mine operation is shown on Table 2. This timeline will allow Western Slope Materials to satisfy the need for construction material and services in the Colorado River valley and surrounding community. Table 2. Mining Timetable Years Activity 1 Installation of access, development of processing area, and construction of stormwater berms. Installation of landscaping elements. 1-3 Area A mining 3-5 Reclamation of Area A and associated wetland creation. 5-7 Bernudy Ditch reroute via pipe. 10-20 Area B-F mining and reclamation Over the life of the mine, a total of 1.5 million tons of material will be extracted at a rate of roughly 100,000 tons per year. This will result a mine life of approximately 15 years, assuming consistent market conditions. Final reclamation will the final lake configuration shown on Map F- 1. 4. Schedule of Operations Hours of operation at the North Hangs Mine will be limited to Monday thru Saturday, 7am to 7 pm. Operations may be limited during winter months due to freezing conditions and market demands. Only emergency maintenance will take place at night. Lighting to support such emergency work will be downcast and limited. 5. Number of Employees The operation will employ approximately five full time employees. This number may vary based on seasonal demands for products. 6. Equipment and Facilities The anticipated equipment and facilities that will be used at the North Hangs Mine are listed in Table 3. All facilities will be portable, with the exception of the truck scale. Table 3. Typical Onsite Equipment and Facilities Equipment Type Facility Excavator Office trailer North Hangs Mine February 2023 18 Bulldozer Fuel farm Water Truck Crusher/screen On-highway Dump Truck Wash plant Road Grader Truck scale Loader Portable toilets Fuel Tank Mobile Pump County Approval CDPHE APENS/Fugitive Dust USACOE Wetlands permitting CDOT Access Permit & requirements DRMS State of Colorado Mining Permits WATER AUGMENTATION Well permit, augmentation plan, substitute water supply plan. MSHA Federal Mine ID SITE PREP Wetlands, visual mitigation OPERATIONS Road Improvements & Mine Operations FINAL RECLAMATION Process Diagram for Final Permitting and Operations: CWQCC Discharge Permit CO N D I T I O N S OF AP P R O V A L Dust Discharge Wetlands Access Reclaim Water Safety Garfield County Floodplain Development Permit Floodplain