Supply copies of all sampling data, on-site and off-site, including location map, detection limits (see definitions below), raw data sheets, QA/QC documents, date(s) sampled, analytical method(s) used, well or boring logs, and sampling technique(s). All sampling data is provided in Appendix E of the PA/SI Report. Locations of samples and sampling techniques are provided in Section 5.0 of the PA/SI Report, while boring logs are provided in Appendix B. Locate and identify on a map all known or suspected sources (see definition below). Supply all information about source(s) such as: dates of operation, use, or spillage; amounts of material deposited, stored, or spilled; dimensions of source(s); known or suspected hazardous substances (see definition below), etc. This information is provided in Sections 4.2 and 5.4 of the PA/SI Report. Provide a description of all aquifers beneath the site, including description of overlying materials, depth first encountered, thickness, and composition. In general, few productive aquifers exist in northern and western Arkansas, therefore, public water supplies are usually derived from surface water sources. In contrast, alluvial aquifers are heavily used in eastern Arkansas for agricultural purposes. The exception to this is the numerous hot and cool natural springs which exist in a concentrated area in and around Hot Springs National Park, located virtually in the center of the city of Hot Springs. The famous Hot Springs consist of over forty springs which produce approximately 800,000 gallons per day of water at approximately 610C. The localized aquifer which feeds these springs consists of Bigfork chert and Arkansas novaculite formations located north and northeast of the Station about 3-5 miles. the Station.