DERR-2025-002502

Allison Stanley <[e-mail]>
Contaminates of concern
5 messages
Trevor Schwaab <[e-mail]>Tue, Feb 4, 2025 at 12:24 PM
To: Allison Stanley <[e-mail]>
Cc: Jeremy Bell <[e-mail]>
Hi Allison,
I wanted to quickly clarify we have all the contaminates of concern listed with the addional metals that you
requested.
Our current list is as follows:
Acenaphthene
Anthracene
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Chrysene
Dibenz(a,h)anthracene
Fluoranthene
Fluorene
Indeno(1,2,3-cd)pyrene
Naphthalene
Pyrene
Lead
I will add anmony, arsenic, copper, zinc, and n. Did you want any other CoC's added?
Thank you,

Trevor Schwaab
Laboratory Manager

MT2 – Firing Range Experts
14045 West 66th Avenue
Arvada, CO 80004
303-619-2061
www.mt2.com

4/7/25, 9:27 AM State of Utah Mail - Contaminates of concern
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1823156003495240903&simpl=msg-f:18231560034952409…1/4
Allison Stanley <[e-mail]>Tue, Feb 4, 2025 at 3:22 PM
To: Trevor Schwaab <[e-mail]>
Cc: Jeremy Bell <[e-mail]>
Hi Trevor,
Thanks for following up. For metals, we would also ask for iron to be added (I think I missed it on the call, so my
apologies).
Also, as Bill had mentioned, our goal is to remain consistent with the Beaver Mountain gun range VCP site that we've
worked on with SITLA. With that project, our PAH analysis also included 1,Methylnaphthalene, Indene, 2-
Methylnaphthalene, Acenaphthylene, benzo (g,h,i) perylene, and Phenanthrene. I've included that suite of PAHs below.
Thanks again for meeting with us this morning. I will be sending out a follow-up email which will summarize what we
talked about in a little more depth. I'll get that out either tomorrow or Thursday.
Thanks,
Allison
[Quoted text hidden]
--
Allison Stanley
Environmental Scientist II | VCP/Brownfields Section
P: [phone]
environmentalresponse.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
Trevor Schwaab <[e-mail]>Wed, Feb 5, 2025 at 1:22 PM
To: Allison Stanley <[e-mail]>
4/7/25, 9:27 AM State of Utah Mail - Contaminates of concern
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1823156003495240903&simpl=msg-f:18231560034952409…2/4
Cc: Jeremy Bell <[e-mail]>
Hi Allison,
I can not for the life of me find the addional organics you requested on any of the RSL lists. What are the levels you
would like them below?
Thank you,

Trevor Schwaab
Laboratory Manager

MT2 – Firing Range Experts
14045 West 66th Avenue
Arvada, CO 80004
303-619-2061
www.mt2.com

From: Allison Stanley <[e-mail]>
Sent: Tuesday, February 4, 2025 3:22 PM
To: Trevor Schwaab <[e-mail]>
Cc: Jeremy Bell <[e-mail]>
Subject: Re: Contaminates of concern

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Allison Stanley <[e-mail]>Mon, Feb 10, 2025 at 2:16 PM
To: Trevor Schwaab <[e-mail]>
Hi Trevor,
No worries, I've attached a PDF of the most current EPA RSL table below (Nov 24). The Residential and Industrial RSLs
for the PAHs can be found on page 9. You can also find the table on EPA's webpage, "Regional Screening Levels (RSLs)
- Generic Tables" under (TR=1E-06 THQ=1.0).
4/7/25, 9:27 AM State of Utah Mail - Contaminates of concern
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1823156003495240903&simpl=msg-f:18231560034952409…3/4
Also, I apologize for the late email. I meant to respond last week but the webpage was down for maintenance. The follow-
up email from our discussion last week is also on its way, I am just passing it through my manager first.
Thanks!
Allison
[Quoted text hidden]
RSLs Summary Table.pdf
5624K
Trevor Schwaab <[e-mail]>Mon, Feb 10, 2025 at 2:45 PM
To: Allison Stanley <[e-mail]>
Hi Allison,
No worries! I checked the table you sent to make sure I wasn't looking at an older version and I sll cannot find
1,Methylnaphthalene, Indene, 2-Methylnaphthalene, Acenaphthylene, benzo (g,h,i) perylene, and Phenanthrene
listed. I double checked all the tables I could find on the EPA lisngs and they do not appear to be there either.
Did Beaver Mountain list any RSL's for those specific compounds? I checked some previous analysis I had done on PAH
for a different project and those compounds are available in the tesng suite but I cannot find anything from the EPA
for screening levels. I would be more than happy to include them in the reporng but I would like to list a project
criteria for those compounds if they are available.
Thank you,

Trevor Schwaab
Laboratory Manager

MT2 – Firing Range Experts
14045 West 66th Avenue
Arvada, CO 80004
303-619-2061
www.mt2.com

From: Allison Stanley <[e-mail]>
Sent: Monday, February 10, 2025 2:16 PM
To: Trevor Schwaab <[e-mail]>
[Quoted text hidden]

[Quoted text hidden]
4/7/25, 9:27 AM State of Utah Mail - Contaminates of concern
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1823156003495240903&simpl=msg-f:18231560034952409…4/4