| OCR Text |
Show Levels found toxic to livestock occurred 11% of the time. Similar levels of exceedance· were found for copper, molybdenum, and cadmium. It should be noted that six samples collected in the Great Salt Lake (GSLEOl, GSLE05, and GSLE06, and GSLW0l, GSLW02, and GSLW03) would require remedial action relative to cadmium. As with the soils data, the concentrations of metals in the bed sediments requiring remediation occurred approximately 50% of the time. In most cases, these levels .occurred adjacent to sources or in ponds and wetlands. 5.3 NATURAL RESOURCE DAMAGE ASSESSMENT • SUMMARY The Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), 42 U.S.C. 9601-9657, and the Clean Water Act (CWA), 33 USC 1251-1376, provide that federal and state agencies who are authorized to act as trustees of natural resources may assess damages ~o natural resources resulting from a ~charge or a release of a haz.ardous substance and may seek to recover those damages. Recently, Natural Resource Damage Assessments have been modified under 43 CFR Subtitle A, Part II where specific guidelines have been provided for several types of assessments (Type A and Type B) . . The most applicable (Type B) for the UCD smelter site have been summariz.ed in Table 5.3-1 of this report. A Type B assessment consists of three phases: (1) Injury determination, (2) Quantification, and (3) Damages. This summary deals with only portions .of (1) and (2) relative to historical information and data collected in this investigation. Table 5.3-1 indicates that a number of natural resources have been damaged as a result of UCD - smelter operations. These injuries extend over a large area including·Kessler Canyon, Little Valley, and Black Rock Canyon. In some cases, injuries have been documented specifically by the data collected while others are inferred based upon observations, past studies, and criteria exceedance. 187 |
