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Exhibit G <br /> Page 2 <br /> • One well(Permit No. 3738)located in the NW 1/4 of the SW 1/4 of Section 2 was constructed in 1959 as a <br /> domestic well and was reported to have a static water level at approximately 25 ft-bgs at the time of <br /> drilling. This stock well will be plugged and abandoned prior to mining. <br /> The mining depth will be limited to the economic depth profile of the sand resource,which is anticipated to range <br /> from approximately 20-ft.to 30-ft.maximum depth in most areas. Two groundwater wells were identified in areas <br /> currently scheduled for mining(Permit Nos.378 and 310849). The static groundwater levels for these wells are <br /> approximately 25 to 55 ft-bgs(based on original well records).Based on this information,the depth to the primary <br /> aquifer underlying the Site,and reviewing topographic elevations described by the Barnesville, CO USGS <br /> topographic map,groundwater is not expected to be disturbed by the planned mining activity(CO DWR,2017). <br /> Therefore,operations are not expected to result in any negative disturbance of the identified groundwater system. <br /> Presence of Wetland and Waterbodv Features <br /> CSC completed a wetland and waterbody delineation in October 2023 to identify the spatial extent and location of <br /> wetlands,streams,and other aquatic resources within the Permit Area. For purposes of this Exhibit,CSC considers <br /> "Study Area"and"Permit Area"to be effectively equivalent,and such terms are or may be used interchangeably. <br /> The wetland delineation and determination surveys were conducted in accordance with the Regional Supplement to <br /> the Corps of Engineers Wetland Delineation Manual: Great Plains Region Version 2.0(USACE 2010),Corps of <br /> Engineers Wetlands Delineation Manual Technical Report Y-87-1 (USACE 1987),and subsequent guidance <br /> documents(USACE 1991a,b; 1992). Wetlands are classified by type using the Classification of Wetlands and <br /> Deepwater Habitats of the United States,commonly referred to as the Cowardin classification system(Cowardin et <br /> al., 1979). The approach recognizes the three parameters of hydrology,vegetation,and soils to identify and delineate <br /> wetland boundaries. Representative sampling points were selected to characterize habitat and plant communities and <br /> defined bed and bank features were used as criteria to identify streams. Aquatic resources that were identified in the <br /> field were mapped utilizing a GPS unit with sub-meter accuracy. <br /> CSC followed the September 2023 WOTUS rule to evaluate the jurisdiction of wetlands and waterbodies.Under this <br /> rule,the USACE recognizes jurisdictional determinations for wetlands and aquatic resources that are relatively <br /> permanent,standing or continuously flowing bodies of water with a continuous surface connection to a jurisdictional <br /> water(e.g.,traditional navigable water,territorial seas,interstate water). Wetlands and aquatic resources determined <br /> by the USACE as having no continuous surface connection with jurisdictional waters are deemed non jurisdictional. <br /> Based on recent USACE guidance and the USACE's 2008 A Field Guide to the Identification of the Ordinary High- <br /> Water Mark(OHWM) in the Arid West Region of the Western United States(Lichvar and McColley 2008), <br /> delineated waterbodies were identified by the presence of bed and bank or other Ordinary High Water Mark <br /> (OHWM)indicators. The USACE criteria to identify jurisdictional determinations for waterbodies include the <br /> continuous presence of OHWM indicators and downstream connectivity to jurisdictional waterbodies.Downstream <br /> connectivity for delineated waterbodies in the field would be determined based on the continuous presence of an <br /> OHWM and connection to downstream waterbodies. Outside the Permit Area where land access was not available, <br /> aerial imagery was used to supplement field observations in determining adjacent surface water resources and <br /> downstream connectivity.For delineated features that did not have a continuous bed and bank or continuous <br /> evidence of an OHWM,these features were determined not to have downstream connectivity. <br /> Prior to survey,a desktop analysis was conducted to assess the likelihood of occurrence and probable location of <br /> wetlands and waterbodies within the Permit Area.According to the U.S. Department of Agriculture(USDA)Natural <br /> Resources Conservation Service(NRCS)digital soil survey mapping of Weld County,there are three mapped soil <br /> Colorado Sand Company II,LLC <br /> Kersey Mine Construction Material Regular(112)Operation Reclamation Permit Application <br /> June 7,2024 <br />