Scientific Investigations Report 2008–5162
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5162
Version 1.1, December 2008
Table 7. Concentrations of selected chemicals of potential concern in bottom sediment collected on August 31, 2005 from Park Avenue detention basin 1, South Lake Tahoe, California, and sediment toxicity screening values for protection of benthic aquatic life.
[Probable effect level: From Smith and others, 1996. Effective range: From Long and Morgan, 1991. Severe effect level: From Persaud and others, 1993. Consensus-based probable effect concentration: From Ingersoll and others, 2000. Abbreviations: µg/g, microgram per gram; ft, foot; <, less than]
| Constituent | Sediment concentration (µg/g) |
Probable effect level (µg/g) |
Effect range, median (µg/g) |
Severe effect level (µg/g) |
Consensus-based probable effect concentration (µg/g) |
|
|---|---|---|---|---|---|---|
| 0–0.2 ft depth sample |
1.5–1.7 ft depth sample |
|||||
| Cadmium | 0.62 | 0.22 | 3.53 | 9 | 10 | 4.98 |
| Copper | 120 | 38 | 197 | 390 | 110 | 149 |
| Lead | 54 | 19 | 91.3 | 110 | 250 | 128 |
| Mercury | 0.12 | .04 | 0.486 | 1.3 | 2 | 1.06 |
| Nickel | 27 | 12 | 36 | 50 | 75 | 48.6 |
| Zinc | 480 | 79 | 315 | 270 | 820 | 459 |
| Anthracene | 0.3 | <0.01 | – | 0.96 | 3.7 | 0.845 |
| Benz[a]Anthracene | 0.4 | <0.01 | 0.385 | 1.6 | 1.48 | 1.05 |
| Benzo[e]Perylene | 0.6 | <0.01 | – | – | – | – |
| Benzo[g,h,i]Perylene | 0.4 | <0.01 | – | – | – | – |
| Chrysene | 0.5 | <0.01 | 0.862 | 2.8 | 4.6 | 1.29 |
| 1,6-dimethyl Naphthalene | 0.2 | <0.01 | – | – | – | – |
| 2,6-dimethyl Naphthalene | 0.2 | <0.01 | – | – | – | – |
| 2-ethyl Naphthalene | 0.1 | <0.01 | – | – | – | – |
| Fluoranthene | 1.0 | <0.01 | 2.355 | 3.6 | 10.2 | 2.23 |
| 4,5-methylene Phenanthrene | 0.2 | <0.01 | – | – | – | – |
| 1-methyl Phenanthrene | 0.2 | <0.01 | – | – | – | – |
| Perylene | 0.4 | <0.01 | – | – | – | – |
| Phenanthrene | 0.8 | <0.01 | 0.515 | 1.38 | 9.5 | 1.17 |
| Pyrene | 1.0 | <0.01 | 0.875 | 2.2 | 8.5 | 1.52 |
| 2,3,6-trimethyl Naphthalene | 0.2 | <0.01 | – | – | – | – |
U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/sir/2008/5162
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