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Peak Ranch Resource <br /> August 5, 2020 <br /> Drill Hole Drill Hole • . Note <br /> Drill Hole 9(SE comer) 0-2"Topsoil Completion date note recorded <br /> 2"—1'Silty and sandy Clay <br /> 1'-3'Silty sand with gravel <br /> 3'-10'Dense cobbles with sand and gravels <br /> 10'-12'Sand and gravels <br /> 12'—14'Cobbles with sand and gravels <br /> 14'—34'Sand and gravel with cobbles <br /> 34'-40'Cobbles with sand and gravels <br /> 40'—41'Dense sand <br /> 40'-66'Cobbles with sand and gravels <br /> 7.3 Geology and Resource Discussion <br /> Analysis of the exploration drill hole logs and details of a Natural Resources Conservation Service(NRCS) <br /> site-specific soil report(Exhibit 1) indicate that the deposit is 2 pproximately 50 to 60 feet deep with an <br /> overburden of 12-15 inches and 0-6 inches of topsoil in the area of the deposit. The total depth of material <br /> available to be stripped as topsoil and overburden for replacement during reclamation is approximately 18 <br /> inches. Material balances for reclamation purposes will be calculated using a topsoil depth of six inches. <br /> Overburden depth for material balances purposes is assumed to be 12 inches. <br /> The gravel deposit is underlain by Cretaceous Pierre shale. These estimates are consistent with geologic <br /> mapping conducted in the area and the custom soil survey that was generated for the site using NRCS data <br /> agrees with historical data gleaned from operating the Maryland Creek Ranch site. <br /> Due to the presence of Pierre Shale as the bedrock for the site, mining will not proceed to bedrock. It will stop <br /> at least two feet above the shale to prevent its exposure. <br /> The combination of USGS geological mapping, NRCS data, on-site exploration drill holes, and experience <br /> gained at the currently operating Maryland Creek Ranch site(Maryland Creek Ranch contains a deposit <br /> similar to the alluvial deposit that will be mined at Peak Ranch Resource) give Peak Materials confidence that <br /> this deposit is well characterized and that it will be a sufficient resource to support the mining plan, as <br /> proposed. <br /> 8.0 PRIMARY AND SECONDARY COMMODITIES <br /> The operation will produce raw materials including sand, gravel, and rock. These materials will all be <br /> transported offsite to Maryland Creek Ranch for processing. If any large boulders are found at the Peak <br /> Ranch Resource site, they will be direct shipped to customers using Peak Ranch Resource dump trucks. If <br /> any boulders that exceed 24 tons are found on the site (highly unlikely),they will not leave the site due to <br /> highway transportation weight limits. <br /> No incidental products are being extracted from the Peak Ranch Resource site. <br /> (:reK IR kki—d ASfBf1 tm PL1A' D-8 O TETRA TECH <br />