| OCR Text |
Show will be addressed under a separate plan. Findings of soil and debris characterization investigations will be compiled by Kennecott and submitted to the United States Environmental Protection Agency (EPA) and Utah Department of Environmental Quality (UDEQ). Kennecott and(or) agency personnel may require additional information be collected subsequent to the initial characterization event and before removal actions are implemented. To date, Kennecott has characterized the Site to the extent practicable (not all sites identified in this Work Plan have been fully characterized), but due to existing decommissioned and operational structures, additional sites may be added to the work scope, if appropriate. Kennecott will conduct the characterization activities, removal actions, demolition, and reclamation with UDEQ and EPA oversight and governed by an Administrative Order on Consent (AOCCERCLA-VIII-95-04). The action is titled the Kennecott North Facilities Soils and Wastewater Treatment Plant Ponds Site Removal Action (NFS/WWTP Removal Action - SSID# 4B). Sampling will progress at each site from characterization sampling (if not previously completed) designed to determine the nature and extent of contamination to post removal sampling, if removal is required. A sufficient number of samples will be collected from a site to adequately characterize and determine the limits of contamination. Samples will be collected using hand tools and if necessary a backhoe to expose sample material. If removal is required, post removal samples will be collected to document the existing soil conditions. Any fill materials associated with a site will be sampled prior to and during placement (one sample per 5000 cubic yards of fill) to ensure that the fill is not contaminated. The samples will be analyzed for the constituents of concern (Section C.4.0) according to EPA methods. All analytical procedures will be consistent with Federal Guidance Solid Waste (SW) - 846 (Test Methods For Evaluating Solid Waste). C.2.0 SITE BACKGROUND AND DESCRIPTION C.2.1 Topography The Kennecott North Facilities are located between the southern shore of the Great Salt Lake and the northern end of the Oquirrh Mountains. The approximate elevation of the Facilities range from 4225 to 4450 feet National Geodetic Vertical Datum of 1929 (NGVD) and generally slope north. The Great Salt Lake is at an elevation averaging 4200 feet NGVD. C.2.2 Meteorology Precipitation data recorded at the Saltair Station at the southern shore of the Great Salt Lake indicate the average precipitation for the North Facilities region is 13.6 inches per year. The average monthly precipitation ranges from a high of 1.8 inches in April to an average low of 0.7 inches in July. Based Appendix C* 2 July 18, 1996 Rev. C |
