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The climate is semi-arid and is characterized by mild winters with moderate snowfalls which are <br /> seldom heavy enough to cause access problems. The summers are warm with temperatures <br /> occasionally reaching 100°F.Annual precipitation for the area averages approximately 12 inches <br /> occurring mostly during summer thunderstorms;the remaining precipitation comes from winter <br /> snow and spring rain. Vegetation in the area is sparse and consists of junipers and pinion pines <br /> in rocky soils along with sage and other brush, forbs, grasses, and cacti typical of a semi-arid <br /> climate. The site is located in a historic mining district. <br /> The Slick Rock project is in the Canyon Lands Section,east and east-central part,of the Colorado <br /> Plateau physiographic province. The Colorado Plateau is a block of continental crust that has <br /> been tectonically stable since early Paleozoic time. Its stable shelf depositional environment has <br /> allowed thick accumulations of clastic, carbonate, and evaporitic sediments. Beginning <br /> approximately 6 million years ago,the entire Colorado Plateau was subject to epeirogenic uplift <br /> of 4,000-6,000 ft. This geologically rapid uplift caused the existing rivers and streams to <br /> aggressively downcut resulting in the canyon lands topography of today (Hunt, 1956). <br /> Sedimentary strata within the Colorado Plateau host numerous uranium/vanadium deposits. The <br /> majority of the deposits are hosted by the Pennsylvanian Hermosa Formation,the Permian Cutler <br /> Formation, the Triassic Chinle Formation, and the Jurassic Morrison Formation. The <br /> overwhelming majority of the uranium production was from the Morrison Formation, <br /> specifically the Salt Wash Member. In the Salt Wash Member, deposits are concentrated along <br /> a thin, one to several mile-wide arcuate belt that extends from the Gateway district through the <br /> Uravan district and south to the Slick Rock district. <br /> The Slick Rock district lies in the Paradox Basin at the southern edge of the salt anticline region <br /> also called the Paradox Fold and Fault Belt (Kelley, 1958). The district, which covers <br /> approximately 570 mil of the Colorado Plateau, is underlain by about 13,000 ft of sedimentary <br /> strata which lies on metamorphic and igneous rocks of a Precambrian basement.The sedimentary <br /> formations range in age from Cambrian to Late Cretaceous (Shawe, 1970). <br /> Slick Rock Project Groundwater Sampling and Analysis Plan- 2025 <br /> Slick Rock NOI Modification July 2025 <br /> Appendix C Page 3 of 35 <br />