regularly which is why the quarter quality is so good and would remain -- we expect council member tatiana kostanian: remain that way with the placement of these blocks. -- we expect it to remain that way with the placement of the blocks. there is no chemical disturbance really anticipated with the placement of these blocks. >> i think that's -- that's more my experience and the more i think you hear from the experts, i think that more questions are raised. i understand where you're coming from. but i think that it cuts both ways. just like, you know, we're talking about having a sense that there might be some impact. quite frankly, the way i would describe what i've heard is that in some respects the experts also had a sentence of how far they needed to go to understand, you know, when to stop the analysis. i think there is a very good argument that, in fact, testing should have been done. other colleagues would have a difference of opinion. but i think that the fact that -- that as was noted earlier that there was even no definition of what it meant for something to be material. i think that raise