1 barium in the sediment. When the samples were actually taken for the 



2 • biological work, these were the actual levels of barium seen in the 



3 sediments at the different stations. 



4 They were at 160, 360, 602, 880, and 1,500 meters for this 



5 particular part of the study. The same stations by weak acid leech, you 



6 can see the concentrations and again these are in micrograms/gram dry 



7 weight, ppm. So, you can these relative numbers. 



8 DR. COOPER: What was the background level of that? 



9 DR. RAY: 700 hundred to 900 was background level, they were 



10 measuring in that area. California, along the coast, you will see 



11 numbers like that. Further offshore we have seen numbers as high as 



12 1,500 to 1,800 ppm for background. It's kind of variable depending on 



13 where you are there. 



14 This is just, again, showing the decrease in barium with distance 



15 along those five gradient stations. These are the weak acid leech 



16 numbers that you saw a minute ago. These are pre- and post-drilling. 



17 This 0.18 kilometers is downstream, this 1.5 kilometers is upstream. 



18 Pre- and post-drill you can see at these stations the increase 



19 here, a very definite elevation at the enclosed stations that was 160 



20 meters, 360, and then it starts tapering out. 



21 We are still seeing statistically significant elevated barium out 



22 to about 2,500 meters in this downstream direction in this particular 



23 well. 



24 Just to see some of the patterns in the other metals, zinc, lead, 



25 copper, cadmium and the units they are using in this particular case are 



26 nanimoles/gram. You can multiply these out. This is about 4.9 ppm 



27 here, this one was about 8.7 ppm, this is about 4.1, this is a little 



28 over, this is about .4 down here with the cadmium. 



29 It's just to show the gradient. In the first and second stations, 



30 you could see some spatial elevation that appears to be related to the 



31 drilling. When you get much beyond that 300 to 400 meter range, you are 



32 getting down the level where you really can't detect levels that are 



33 much above the background. 



50 



