1 DR. RAY: The concentrations--the mud concentration varies 



2 tremendously between early in the hole and late in the hole. 



3 DR. TEAL: That comes to a little under a kilogram per square 



4 meter. 



5 DR. AURAND: All right. Let's see. Table 10, the average 



6 discharges of particulate solids, barium, and chromium from OCS wells. 



7 Georges Bank, eight exploratory wells, total solids in tons, 



8 l,220--drill ing fluid solids only, does not include cuttings. 



9 DR. TEAL: What was the number again? 



10 DR. AURAND: 1,220 drilling fluid solids only. 



11 DR. TEAL: That's tons, so that's a million kilograms, a little 



12 bit less than we figured, so that comes to 1x10^ and 5x10^. 



13 DR. BUTMAN: Let's just use one column. That's a kilogram per 



14 square meter. That's of mud, right? 



15 DR. TEAL: Yes. 



16 DR. BUTMAN: But now there's 200 parts per million chromium in 



17 that. 



18 DR. TEAL: Yes. 



19 MR. LANE: It's in insoluble form. 



20 DR. BUTMAN: So you mix it down 1 centimeter, trying to get a 



21 concentration. 



22 DR. TEAL: So, mix it into a centimeter and-- 



23 DR. BOTHNER: So it's .2 possible meter increase? A meter times a 



24 meter. 



25 DR. TEAL: I think that's right. 



26 DR. BOTHNER: You are putting 200 milligrams in 10* cubic 



27 centimeters. 



28 DR. TEAL 



29 MR. LANE 



30 DR. TEAL 



So, it's .02. 



102 parts per million. 



That's putting it all in and concentrating it in one 



31 square kilometer. The soluble part of that is only a tiny fraction of 



32 the total. We are turning out to have a very small number, even if we 



33 concentrate it all right in the first square kilometer at the head of 



34 the canyon. 



295 



