Watershed reclamation preliminary assessment, surface media investigations, with a review

Page 219

TABLE 5.3-1. A summary of CERCLA issues relative to Natural Resources injuries at the UCD smelter canyons and associated aquatic resources. Documented Probable Possible Unlikely INJURY DB'I'BRMINA'llON PHASB L (A) SURFACE WATER RESOURCES (1) Exceed drinking water standards (1411-1416 of SOWA, or State Standards) (2) Exceed water quality criteria CWA (Section 304(a)(l) (aquatic life protection) or (recreation) (3) Scdfments exceed Section 3001 (SWDA, 42 U.S.C. 6921) (4) Concentration which upon expose cause injury to other natural resources (B, C, D, E) X X X X (B) GROUNDWATER RESOURCES (1) Exceed Drinking Water Standards (2) Exceed Water Quality Criteria (3) Concentrations, which upon exposure cause injury to other natural resources (A, C, D, E) ~~·~:, X X X (C) AIR RESOURCES (1) ·Concentrations exceed standards (Section 112 of the . Qean Air Act, 42 U.S. C. 7412 or State Standards) (2) Concentrations, which upon exposure cause injury to other natural resources (A, B, D, E) X X , (D) GEOLOGIC RESOURCES (1~ Concentration upon exposure have resulted in levels in excess of Section 3001 of SWDA, 42 U.S.C. 692) (2) Raise pH above 8.5 and below 4.0 (3) Raise SAR more than 0.176 (4) Reduce water holding capacity • (5) Reduce soil microbial respiration/plant microbial growth inhibited (6) Reduce or inhibit carbon mineralization by reduction in soil microbial populations (7) Concentrations of substances sufficient to injury grou,:idwater (8) Concentrations of substances sufficient to cause toxic response to soil invertebrates (9) Concentrations of substances sufficient to cause injury to other natural resources (A, B, C, E) X X X •~-·'" '. X x ·. X X X X (E) BIOLOGICAL RESOURCES (1) Concentration of substances sufficient to cause adverse changes in viability (2) Concentrations exceed action or tolerance levels under Section 402 of the Food, Drug and Cosmetic Act (21 U.S.C. 342) in edible portions of organisms, or exceed levels which· State Health agency has issued limits or bans on consumption X X 188 ..·.....