From:
To:

Pane Jensen
Kilob Greg: Pan vamant; Mike Rock

Subject:

RE: McKalla Excavation
Friday, November 30, 2018 2:56:07 PM

Date:

Greg,
Thank you for your help working through this topic. Based on our phone conversation, Terracon will
relocate boring B-9 and boring B-22 and not impact any of the existing bui lding pads.
Thanks,

DANE JENSEN
CAA ICON
C: 720-484-1714

E:

From: Kiloh, Greg [mailto:Greg.Kiloh@austintexas.gov]

Sent: Friday, November 30, 2018 1:15 PM
M ike Rock

Dan Vai llant

Subject: RE: McKalla Excavation
Dane,
The buildings t hat are visible in 2003 were the old chemical plant buildings. They were demolished
around that time, and the area around them was fully excavated during remediation. The Service
Center buildings were never constructed. The steel beams that are being salvaged were intended
for those buildings. The building pads were put in place just before the explosion occurred. They are
t he whitish rectangles visible in the aerial photos after 2006. They are also labeled '6' on the Shaw
Environmental maps.
It appears to me that none of the bore holes are directly in a building pad except for B-22. I think the
topsoil is pretty thin in t hat area, and the bore is shallow, so it probably does not present a problem,
because I doubt there is any topsoi l beneath the pad.
The raised area around B-4 must be a spoil pile, because the only pad in that area is quite small, and
it appears to be south of B-4, closer to the whit e rectangular pad west of B-7.
When it comes to excavation, I think the areas that deserve some caution are the rectangular pads
north of Shaw's general limit of excavation line, that were excluded from the excavation (labeled
'6').
Thanks for the overlays of the bore hole locations. They give me much greater peace of mind by
being able to see exactly where they land .

Greg Kiloh
Redevelopment Project Manager

COA Response Page 328 of 9063