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4. Adjacent and Nearby Properties <br />4.1 General Off -Site Description <br />Zoning: The Site vicinity is zoned agricultural in all directions. <br />Adjacent Site Use: <br />North Undeveloped <br />South Undeveloped <br />East Active Gold Mine <br />West Undeveloped <br />General Regional Property Use: <br />The properties in the Site vicinity are comprised of undeveloped land and part of a mining district. <br />There is a mining structure on the property adjacent to the north of the Site. During his interview, Mr. Jeff <br />Gaul clarified that this structure was moved to this location within the last year as part of the historical <br />preservation program for CC&V Mining. No mining has been conducted at this northern adjacent property <br />in association with this structure. Additionally, Mr. Gaul clarified that block retention structures observed on <br />the southern adjacent property were part of former mining activities from the Little Bess and Maid of <br />Orleans mines. Lastly, Mr. Gaul indicated that two groundwater wells observed on the southern adjacent <br />property were active wells installed in 2013 to monitor groundwater quality. Mr. Gaul provided one set of <br />data from the groundwater monitoring wells, which were sampled for general chemistry, inorganic cations <br />and anions, and metals. Data indicate the depth to water in the shallow groundwater monitoring well is <br />approximately 52 feet bgs and depth to water in the deep groundwater monitoring well was over 400 feet <br />bgs. Sample results from the shallow well indicate the concentration of sulfate in the groundwater was 966 <br />milligrams per liter (mg/1), which exceeds the secondary drinking water standard of 250 mg/I. Sulfate is a <br />contaminant associated with mining activities, although the source of the sulfate could be natural. No other <br />parameters exceeded the applicable standards. No sample data was included from the deep groundwater <br />monitoring well, the information provided stated there was insufficient flow in the well. <br />4.2 Sensitive Environmental Off -Site Uses (Current and Historical) <br />No facilities were identified in the agency database search (Appendix A) (GeoSearch, 2015b). During the off - <br />Site reconnaissance and review of the GeoSearch database, regulatory agency files, groundwater flow <br />direction, distance from the Site, and historical information, or a combination thereof, one establishment <br />with the potential to impact the Site was identified. <br />Table 4-1 Sensitive Environmental Off -Site Uses <br />From To Address/Distance Use <br />Unknown Present Eastern Adjacent Property Gold Mine <br />1,900 feet East of the Site <br />Phase I Environmental Site Assessment Page 12 <br />Squaw Gulch <br />Teller County Road 88, Cripple Creek, Colorado