, Volume 24, Issue 3, pp 368–380 | Cite as

Pesticides associated with suspended sediemnts entering San Francisco Bay following the first major storm of water year 1996

  • Brian A. Bergamaschi
  • Kathryn M. Kuivila
  • Miranda S. Fram


Estuaries receive large quantities of suspended sediments following the first major storm of the water year. The first-flush events transport the majority of suspended sediments in any given year, and because of their relative freshness in the hydrologic system, these sediments may carry a significant amount of the sediment-associated pesticide load transported into estuaries. To characterize sediment-associated pesticides during a first-flush event, water and suspended sediment samples were collected at the head of the San Francisco Bay during the peak in suspended sediment concentration that followed the first major storm of the 1996 hydrologic year. Samples were analyzed for a variety of parameters as well as 19 pesticides and degradation products that span a wide range of hydrophobicity. Tidal mixing at the head of the estuary mixed relatively fresh suspended sediment transported down the rivers with suspended sediments in estuary waters. Segregation of the samples into groups with similar degrees of mixing between river and estuary water revealed that transport of suspended sediments from the Sacramento-San Joaquin drainage basin strongly influenced the concentration and distribution of sediment-associated pesticides entering the San Francisco Bay. The less-mixed suspended sediment contained a different distribution of pesticides than the sediments exposed to greater mixing. Temporal trends were evident in pesticide content after samples were segregated according to mixing history. These results indicate sampling strategies that collect at a low frequency or do not compare samples with similar mixing histories will not elucidate basin processes. Despite the considerable influence of mixing, a large number of pesticides were found associated with the suspended sediments. Few pesticides were found in the concurrent water samples and in concentrations much lower than predicted from equilibrium partitioning between the aqueous and sedimentary phases. The observed sediment-associated pesticide concentrations may reflect disequilibria between sedimentary and aqueous phases resulting from long equilibration times at locations where pesticides were applied, and relatively short transit times over which re-equilibration may occur.


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Literature Cited

  1. Agee, B. A. 1986. DDT in the Salinas Valley. A special report on the probable source of technical grade DDT found in the Blanco Drain near Salinas, California. Water Quality Monitoring Report 86-2-WQ. California Water Resources Control Board, Sacramento, California.Google Scholar
  2. Bergamaschi, B. A., D. S. Baston, K. L. Crepeau, andK. M. Kuivila. 1999. Determination of pesticides associated with suspended sediments in the San Joaquin River, California, USA, using gas chromatography-ion trap mass spectrometry.Toxicological and Environmental Chemistry 69:305–319.CrossRefGoogle Scholar
  3. Bergamaschi, B. A., K. L. Crepeau, andK. M. Kuivila. 1997. Pesticides associated with suspended sediments in the San Francisco Bay Estuary, California. Open-File Report 97-24. U.S. Geological Survey, Reston, Virginia.Google Scholar
  4. Blanchard, P. E., andR. N. Lerch. 2000. Watershed vulnerability to losses of agricultural chemicals: Interactions of chemistry, hydrology, and land-use.Environmental Science and Technology 34:3315–3322.CrossRefGoogle Scholar
  5. Brown, L. R. 1997. Concentrations of chlorinated organic compounds in biota and bed sediment in streams of the lower San Joaquin River drainage, California. Open-File Report 98-171. U.S. Geological Survey, Reston, Virginia.Google Scholar
  6. Buchanan, P. A., andD. H. Schoellhamer. 1998. Summary of suspended-solids concentration data, San Francisco Bay, water year 1996. Open-File Report 98-175. U.S. Geological Survey, Reston, Virginia.Google Scholar
  7. California Data Exchange Center. 1998. Data. California Department of Water Resources. California Department of Water Resources, Sacramento, California.Google Scholar
  8. California Department of Pesticide Regulation. 1996. Pesticide use data for 1995 [digital data]. California Department of Pesticide Regulation, Sacramento, California.Google Scholar
  9. California Department of Water Resources. 1986. DAY-FLOW program documentation. Dayflow data summary users guide. California Department of Water Resources, Sacramento, California.Google Scholar
  10. Canuel, E. A., J. E. Cloern, D. B. Ringleberg, J. B. Guckbert, andG. H. Rau. 1995. Molecular and isotopic tracers used to examine sources of organic mater and its incorporation into the food webs of San Francisco Bay.Limnology and Oceanography 40:67–81.Google Scholar
  11. Childress, C. J. O., W. T. Foreman, B. F. Connor, andT. J. Maloney. 1999. New reporting procedures based on longterm method detection levels and some considerations for interpretation of water-quality data provided by the U.S. Geological Survey National Water Quality Laboratory. Open-File Report 99-193. U.S. Geological Survey, Reston, Virginia.Google Scholar
  12. Clarke, J. U. 1998. Evaluation of censored data methods to allow statistical comparison among very small samples with below detection limit observations.Environmental Sciences and Technology 32:177–183.CrossRefGoogle Scholar
  13. Crepeau, K. L., J. L. Domalgalski, andK. M. Kuivila. 1994. Methods of analysis and quality-assurance practices of the U.S. Geological Survey Organic Laboratory, Sacramento, California—Determination of pesticides in water by solid-phase extraction and capillary-column gas chromatography/mass spectrometry. Open File Report 94-362. U. S. Geological Survey, Reston, Virginia.Google Scholar
  14. DiToro, D. D., C. S. Zarba, D. J. Hansen, W. J. Berry, R. C. Swartz, C. E. Cowan, S. P. Pavlou, H. E. Allen, T. A. Nelson, andP. R. Paquin. 1991. Technical basis for establishing sediment quality criteria for nonionic organic chemicals using equilibrium partitioning.Environmental Toxicology and Chemistry 10:1541–1583.CrossRefGoogle Scholar
  15. Domagalski, J. L., andK. M. Kuivila. 1993. Distributions of pesticides and organic contaminants between water and suspended sediment, San Francisco Bay, California.Estuaries 16:416–426.CrossRefGoogle Scholar
  16. Domagalski, J. L., andK. M. Kuivila. 1986. Estimation of distributional parameters for censored trace level water quality data. 1. Estimation techniques.Water Resources Research 22:135–146.CrossRefGoogle Scholar
  17. Goodwin, P., andR. Denton. 1991. Seasonal influences on the sediment transport of the Sacramento River, California.Proceedings of the Institute of Civil Engineers, Part 2 91:163–172.Google Scholar
  18. Helsel, D. R., andR. J. Gilliom. 1986. Estimation of distributional parameters for censored trace level water quality data. 1. Verification and applications.Water Resources Research 22:147–155.CrossRefGoogle Scholar
  19. Horowitz, A. J., K. A. Elrick, andR. C. Hooper. 1989. A comparison of instrumental dewatering methods for the separation and concentration of suspended sediment for subsequent trace element analysis.Hydrological Processes 2:163–184.CrossRefGoogle Scholar
  20. Howard, P. H.. 1991. Handbook of Environmental Fate and Exposure Data for Organic Chemicals, Volume III, Pesticides. Lewis Publishers, Chelea, Michigan.Google Scholar
  21. Jennings, B., D. Schoellhamer, andK. Kuivila. 1997. Optimum sampling strategy for sediment-associated pesticides in Suisun Bay.Newsletter of the Interagency Ecological Program for the Sacramento-San Joaquin Estuary 10:16–20.Google Scholar
  22. Jepsen, R., S. Borglin, W. Lick, andD. L. Swackhamer. 1995. Parameters affecting the adsorption of hexachlorobenzene to natural sediments.Environmental Toxicology and Chemistry 14:1487–1497.CrossRefGoogle Scholar
  23. Jury, W. A., D. D. Focht, andW. J. Farmer. 1987. Evaluation of pesticide groundwater pollution potential from standard indices of soil-chemical adsorption and biodegradation.Journal of Environmental Quality 16:422–428.CrossRefGoogle Scholar
  24. Kenega, E. E.. 1980. Predicted bioconcentration factors and soil sorption coefficients of pesticides and other chemicals.Ecotoxicology and Environmental Safety 4:26–38.CrossRefGoogle Scholar
  25. Kratzer, C. R., andB. N. Biagtan. 1996. Determination of travel times in the lower San Joaquin River basin, California, from dye-tracer studies during 1994–1995. Water-Resources Investigations Report 97-4018. U.S. Geological Survey, Reston, Virginia.Google Scholar
  26. Kratzer, C. R.. 1999. Transport of sediment-bound organochlorine pesticides to the San Joaquin River, California.Journal of the American Water Resources Association 35:957–981.CrossRefGoogle Scholar
  27. Leight, A. K., andR. F. Van Dolah. 1998. Acute toxicity of the insecticides endosulfan, chlorpyrifos, and malathion to the epibenthic estuarine amphipodGammarus palustris (Bousfield).Environmental Toxicology and Chemistry 18:958–964.CrossRefGoogle Scholar
  28. Lick, W., andV. Rapaka. 1996. A quantitative analysis of the dynamics of the sorption of hydrophobic organic chemicals to suspended sediments.Environmental Toxicology and Chemistry 15:1038–1048.CrossRefGoogle Scholar
  29. Liljestrand, H. M., andY. D. Lee. 1992. The distribution of organic pollutants onto suspended sediments, humic materials and fulvic materials in the transverse mixing zone.Water Science and Technology 25:49–56.Google Scholar
  30. Meade, R. H. 1972. Transport and deposition of sediments in estuaries.Journal of the Geological Society of America 133:91–120.Google Scholar
  31. Montgomery, J. H. 1993. Agrochemicals Desk Reference—Environmental Data. Lewis Publishers, Chelea, Michigan.Google Scholar
  32. National Oceanic and Atmospheric Administration. 1995. Climatological data. California, December 1995; ISSN 0145-0069, Volume 099, No. 12. National Oceanic and Atmospheric Administration, Washington, D.C.Google Scholar
  33. Nowell, L. H., P. D. Capel, andP. D. Dileanis. 1999. Pesticides in Stream Sediment and Aquatic Biota. Lewis Publishers, Boca Raton, Florida.Google Scholar
  34. Pereira, W. E., J. L. Domagaiski, F. D. Hostettler, L. R. Brown, andJ. B. Rapp. 1996. Occurrence and accumulation of pesticides and organic contaminants in river sediment, water and clam tissues from the San Joaquin River and Tributaries, California.Environmental Toxicology and Chemistry 15:172–180.CrossRefGoogle Scholar
  35. Rees, T. F., J. A. Leenheer, andJ. F. Ranville. 1991. Use of a single-bowl continuous-flow centrifuge for dewatering suspended sediments: Effect on sediment physical and chemical characteristics.Hydrological Processes 5:201–214.CrossRefGoogle Scholar
  36. Schoellhamer, D. H.. 1996. Factors affecting suspended-solids concentrations in South San Francisco Bay, California.Journal of Geophysical Research 101:12087–12096.CrossRefGoogle Scholar
  37. Schoellhamer, D. H.. 1997. Time series of suspended-solids concentration, salinity, temperature, and total mercury concentration in San Francisco Bay during water year 1996, p. 65–77.In San Francisco Estuary Institute 1996 Annual Report of the Regional Monitoring Program for Trace Substances. San Francisco Estuary Institute. San Francisco, California.Google Scholar
  38. Schubel, J. R., andH. H. Carter. 1984. The estuary as a filter for fine-grained suspended sediment, p. 81–105.In V. S. Kennedy (ed.), The Estuary as a Filter. Academic Press, New York.Google Scholar
  39. Sokal, R. R., andF. J. Rolf. 1981. Biometry, 2nd edition. Freeman and Company, New York.Google Scholar
  40. U.S. Environmental Protection Agency. 1994. Environmental Protection Agency Online Database. U.S. Enviromental Protection Agency, Washington, D.C.Google Scholar
  41. U.S. Environmental Protection Agency. 1996. Drinking water regulations and health advisories. Bulletin 822-B-96-002. U.S. Environmental Protection Agency, Washington, D.C.Google Scholar
  42. Wauchope, R. D., T. M. Buttler, A. G. Hornsby, P. W. M. Augustijn-Deckers, andJ. P. Burt. 1991. The SCS/ARS/CES pesticide properties database for environmental decision-making.Reviews of Environmental Contamination and Toxicology 123:1–164.Google Scholar

Copyright information

© Estuarine Research Federation 2001

Authors and Affiliations

  • Brian A. Bergamaschi
    • 1
  • Kathryn M. Kuivila
    • 1
  • Miranda S. Fram
    • 1
  1. 1.California State UniversityU.S. Geological Survey, Placer HallSacramento

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