August 13 2025, Planning Board Special Meeting Transcript - WEHI

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 17 THE WITNESS: The Langan's number is 1.589 and our number was 1.599. MR. AFRAN: Right. When you said it didn't make that much difference, is that because those numbers were close? THE WITNESS: Yeah, they're very close. MR. AFRAN: Okay. And the same applies to Page 3? THE WITNESS: Yes. Yes. I mean, we're down to a hundredth of numbers, so it's not -- in this analysis not, it's not a big deal. MR. AFRAN: Thank you. Please continue. A. Yes. So we did that same thing on Figure 2, Langan's analysis on the top, this is basically a screen shot from their report, and ours is a screen shot from our analysis at the bottom. So one of the things we then wanted to do, we did a sensitivity analysis using GSI and modifying that and came up with, looking at what happens when you change the GSI, which is geological strength index and reflective of the poor -- and the very poor joint condition. And so we looked at a ten-foot thick layer of bedrock with eager parameters that we changed because that was more reflective of the borings that were