1 again, so there is a period where they are up in the top meter or two. 



2 Basically, the fishery modelers, that's basically their hypothesis, that 



3 that is the only significant impact on the fishery business. 



4 DR. AURAND: We went through this Monday. Basically, what they 



5 modelled is a plume going to the surface with some cone shape to it, but 



6 primarily a straight plume and then spreading in the surface. 



7 DR. NEFF: If you have a blow-out introducing oil at the bottom, 



8 obviously, you have a slightly different picture. 



9 DR. AURAND: Even in that case, it still is basically a vertical 



10 plume going to the surface. 



11 DR. NEFF: In the Ixtoc case, they didn't get much oil involved. 



12 I can't imagine an Ixtoc happening on Georges Bank. Hopefully, we've 



13 learned something. 



14 MR. LANE: How about a gas spill? 



15 DR. NEFF: A lot of bubbles. It would soon be yery volatile and 



16 be gone. 



17 DR. AURAND: Last question for either one of them before they 



18 leave. We are going to hold this for reference as we talk. While we 



19 were coming back from lunch, Jim took the opportunity to write down what 



20 we perceived to be the list of impact agents that you would want to talk 



21 about. 



22 While I put all of this together, Jim, maybe you want to run 



23 through what those are. 



24 MR. LANE: I think we just added some. 



25 DR. AURAND: Add or subtract. 



26 MR. LANE: Maybe I'll just run through them quickly. Anybody who 



27 wants to make some additions or corrections may do that. We have only 



28 one toxicity expert and one oil drilling technology left. Dr. Ray, so we 



29 had better pick his brains in a similar fashion, before he has to leave. 



30 Operational discharges, drilling muds, and additives. What I had 



31 originally thought of was simply putting down the volume of these 



32 materials that were released, what the toxic fractions were and whether 



33 we could postulate any mechanism that would bring enough of this stuff 



34 down into the canyon to have a deleterious biological effect. 



271 



