DERR-2025-000103

Leigh Anderson <[e-mail]>
Site Model
6 messages
Leigh Anderson <[e-mail]>Thu, Sep 26, 2024 at 1:59 PM
To: Christopher Nolan <[e-mail]>
Hey Chris, sorry I haven't gotten back to you on this since we spoke, some other sites have been taking up a bunch of my
time.
Here is a sketch of what Scott was thinking in terms of the GW pathways, as well as maybe clarifying what I think you
guys are trying to convey. Under the future use I added "after development" because I think you are showing a scenario
not for the risks in the future, but what you think may remain after development or remediation or controls.
Chris Nolan <[e-mail]>Thu, Sep 26, 2024 at 2:12 PM
To: Leigh Anderson <[e-mail]>
Thanks Leigh. What does the future use receptor change to? I cannot make out writing.

From: Leigh Anderson <[e-mail]>
Sent: Thursday, September 26, 2024 1:59 PM
To: Chris Nolan <[e-mail]>
Subject: [EXTERNAL] Site Model

Hey Chris, sorry I haven't gotten back to you on this since we spoke, some other sites have been taking up a bunch of my
time.
1/5/25, 12:02 PM State of Utah Mail - Site Model
https://mail.google.com/mail/u/0/?ik=5be3741f93&view=pt&search=all&permthid=thread-a:r-7317218652652193329&simpl=msg-a:r-25568731379618…1/3
Here is a sketch of what Scott was thinking in terms of the GW pathways, as well as maybe clarifying what I think you
guys are trying to convey. Under the future use I added "after development" because I think you are showing a scenario
not for the risks in the future, but what you think may remain after development or remediation or controls.
Leigh Anderson <[e-mail]>Thu, Sep 26, 2024 at 2:15 PM
To: Chris Nolan <[e-mail]>
I wrote in "after development" under future use, I thought it might help clarify, since it seemed like you were trying to
convey that for the future use you plan for the exposure pathways to be taken care of by the approaches will pursue.
[Quoted text hidden]
Leigh Anderson <[e-mail]>Thu, Sep 26, 2024 at 2:17 PM
To: Chris Nolan <[e-mail]>
I don't think I changed anything about future use beyond that, future receptors I think should stay the same.
Though now that you mentioned it, is it resident or is it a potential daycare? But then the way these models are done I
think you might put resident for that anyway.
[Quoted text hidden]
Chris Nolan <[e-mail]>Thu, Sep 26, 2024 at 2:51 PM
To: Leigh Anderson <[e-mail]>
Please see if this is correct.
[Quoted text hidden]
DOC023.pdf
142K
Leigh Anderson <[e-mail]>Thu, Sep 26, 2024 at 3:14 PM
To: Chris Nolan <[e-mail]>
1/5/25, 12:02 PM State of Utah Mail - Site Model
https://mail.google.com/mail/u/0/?ik=5be3741f93&view=pt&search=all&permthid=thread-a:r-7317218652652193329&simpl=msg-a:r-25568731379618…2/3
Yep, that looks like what I sent you. I may need to run your revised version by Scott again, though he's not back until
October 7, but hopefully then we can finish this up.
[Quoted text hidden]
1/5/25, 12:02 PM State of Utah Mail - Site Model
https://mail.google.com/mail/u/0/?ik=5be3741f93&view=pt&search=all&permthid=thread-a:r-7317218652652193329&simpl=msg-a:r-25568731379618…3/3