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The freshwater and siltation ponds will remain open during the life of the mine and will be <br /> reclaimed following the cessation of mining at the site. <br /> Stage 2(Cell 3): Mining will begin in the southwest corner of the cell by the Nix house and <br /> proceed counter clockwise around the oil and gas facilities.Assuming the same mining rates <br /> as Stage 1, Stage 2 is expected to take 4 to 5'/2 years. <br /> Stage 3(Cell 4):Mining will begin in the north and progress south. It should take <br /> approximately 3 to 4 years. <br /> Stage 4(Cells 5, 6, & 7):Mining will start in the north of Cell 5 and will continue clockwise to <br /> end at the west end on Cell 7. Mining in this stage should take approximately 3'/2 to 5 <br /> Reclamation will begin after mining is complete. <br /> Following the completion of each stage,excepting stage 1, reclamation of that stage will begin <br /> concurrent with mining of the subsequent stage. Upon completion of Stage 4, Stage 1 will <br /> begin reclamation. Please refer to the Mining Plan Map in Exhibit C for phase areas to be <br /> mined,locations and areas. <br /> (� Use Mining Plan Map in conjunction with narrative to present: <br /> (i.) Nature, depth and thickness of the deposit and thickness and type of overburden to be <br /> removed <br /> The overburden at the site typically consists of two sub-units;a surficial brown clayey to silty <br /> sand that overlies a buff silty sand. These sub-units are described below. <br /> Surfiicial brown clayey to silty sand with local sandy clay: The surficial brown clayey to silty <br /> sand sub-unit is typically approximately 1 to 2 feet in thickness but locally is as thick as 8 <br /> feet. This sub-unit is usually slightly moist to moist, medium dense to dense with the top 6 <br /> to 8 inches containing significant organics. Of the samples tested,the percent passing the <br /> No. 200 sieve ranged from 16.6%to 74.7%. Atterberg Limits testing <br /> resulted in Liquid Limits of 19 to 31 and Plasticity Indices of 3 to 11. <br /> Buff silty sand: The brown surficial sub-unit is underlain by the buff silty sand sub-unit. The <br /> buff silty sand sub-unit ranges from approximately 4 to 14 feet thick and is slightly moist to <br /> moist becoming wet at the water table. The silty sand is very loose to medium dense and <br /> locally becomes clayey with depth. Of the samples tested,the percent passing the No.200 <br /> sieve ranged from 10.9%to 39.1%. Atterberg Limits testing indicated the material was <br /> granular non-plastic. <br /> The sand and gravel is present throughout the site underlying the overburden and overlying <br /> the bedrock. This unit typically consists of gravelly,fine to coarse grained sand locally <br /> grading to sandy gravel. Where gravels were encountered,the size was typically'/<to 2 <br /> inches. This unit is typically medium dense to dense, but is also locally very loose to loose. <br /> This deposit ranges in thickness from approximately 26 feet to 60 feet. The sands are clean <br /> with fines content(silt and clay)generally ranging from approximately 2.0 to 4.1 percent <br /> averaging 3.0 percent(Big Rock Exploration, 2019). Local clay lenses were reported within <br /> the deposit by Big Rock Exploration (2019). <br /> (ii.) Nature of the stratum immediately beneath the material to be mined in sedimentary <br /> deposits <br /> Nix—Gravel Mine—MLRB 112 Permit Amendment <br /> Exhibit D-3 Page 13 of 126 <br />