77 



Last, there are several papers included that look at toxicity and bioaccumulation in the laboratory. Neff s two 

 papers (1989a and b) look at longer term lab studies (99 days) on bioaccumulation and foodchain transfer. They 

 found limited bioaccumulation and little bioavailability with minimal toxicity. More importantly, Neff started 

 initial measurements on sublethal effects, such as growth and metabolic effects, that are critical to making 

 population productions. I suggest that today's workshop participants keep in mind the direction EPA is talcing 

 in biomonitoring of effluents, specifically the emphasis on chronic effects, where growth and fecundity of specific 

 keystone organisms are being measured as indicators and possible explanations for population effects. While 

 these specific EPA procedures may not be useful to MMS programs, the increased need for designed studies to 

 understand population dynamics suggest that we should consider these approaches. 



The proceedings, which are 867 pages, is an excellent source of data pertinent to this workshop. I believe the 

 program committee did an excellent job in selecting the papers and the editors did an excellent job of reviewing 

 the papers. My only criticism is that many studies, which had excellent QA/QC programs, did not describe those 

 programs or results to help us understand the data. We must have good QA/QC data with each study to fully 

 appreciate the data, and MMS and our workshop must emphasize this aspect similarly. 



REFERENCES 



Bakke, T., JA. Berge, K. Naes, F. Oreld, L.O. Reierson, and K. Bryne. 1989a. Long-term recolonization and 

 chemical change in sediments contaminated with oil-based drill cuttings, chapter 25, pp. 495-520. Jn F.R. 

 Engelhardt, J. P. Ray, aned H.H. Gilliam, eds. Drilling wastes. Proceedings, 1988 International Conference 

 on Drilling Wastes. Calgary, Alberta, Canada, April 5-8, 1988. Elsevier Applied Science, NY. 867 pp. 



Bakke, T., JA. Berge, K. Naes, F. Oreld, L.O. Reierson, and K. Bryne. 1989b. Long-term recolonization and 

 chemical change in sediments contaminated with oil-based drill cuttings, chapter 26, pp. 521-544. .In F.R. 

 Engelhardt, J. P. Ray, aned H.H. Gilliam, eds. Drilling wastes. Proceedings, 1988 International Conference 

 on Drilling Wastes. Calgary, Alberta, Canada, April 5-8, 1988. Elsevier Applied Science, NY. 867 pp. 



Boothe, P. N. and B.J. Presley. 1989. Trends in sediment trace element concentrations around six petroleum 

 drilling platforms in the Northwestern Gulf of Mexico, chapter 1, pp. 3-22. Jn F.R. Engelhardt, J. P. Ray, 

 aned H.H. Gilliam, eds. Drilling wastes. Proceedings, 1988 International Conference on Drilling Wastes. 

 Calgary, Alberta, Canada, April 5-8, 1988. Elsevier Applied Science, NY. 867 pp. 



Chenard, P.G., F.R. Engelhardt, J. Blanc, and D. Hardie. 1989. Patterns of oil-based drilling fluid utilization 

 and disposal of associated wastes on the Canadian frontier lands, chapter 5, pp. 119-136. Jn F.R. Engelhardt, 

 J. P. Ray, aned H.H. Gilliam, eds. Drilling wastes. Proceedings, 1988 International Conference on Drilling 

 Wastes. Calgary, Alberta, Canada, April 5-8, 1988. Elsevier Applied Science, NY. 867 pp. 



Davies, J.M., D.R. Bedborough, RAA. Blackman, J.M. Addy, J.F. Appelbee, W.C. Grogan, J.G. Parker, and 

 A. Whitehead. 1989. Environmental effect of oil-based mud drilling in the North Sea, chapter 3, pp. 59- 

 90. Jn F.R. Engelhardt, J.P. Ray, aned H.H. Gilliam, eds. Drilling wastes. Proceedings, 1988 International 

 Conference on Drilling Wastes. Calgary, Alberta, Canada, April 5-8, 1988. Elsevier Applied Science, NY. 

 867 pp. 



DeNagy, A.L. and WA. Telliard. 1989. The analytical methods utilized and results from the analyses of field 

 collected drilling wastes, chapter 18, pp. 359-394. Jn F.R. Engelhardt, J.P. Ray, aned H.H. Gilliam, eds. 

 Drilling wastes. Proceedings, 1988 International Conference on Drilling Wastes. Calgary, Alberta, Canada, 

 April 5-8, 1988. Elsevier Applied Science, NY. 867 pp. 



Engelhardt, F.R., J.P. Ray, and H.H. Gillam, (eds). 1989. Drilling wastes. Proceedings, 1988 International 

 Conference on Drilling Wastes. Calgary, Alberta, Canada, April 5-8, 1988. Elsevier Applied Science, NY. 

 867 pp. 



Erickson, P., B. Fowler, and D J. Thomas 1989. The fate of oil-based drilling muds at two artificial island sites 

 in the Beaufort Sea, chapter 2, pp. 23-58. Jn F.R. Engelhardt, J.P. Ray, aned H.H. Gilliam, eds. Drilling 



