DERR-2024-013233

Allison Stanley <[e-mail]>
RE: (EXTERNAL) Dewatering and Anticipated Schedule at Redwood
2 messages
Wyffels, Catherine <[e-mail]>Mon, Dec 16, 2024 at 9:59 AM
To: Allison Stanley <[e-mail]>, "Saunders, Nancy" <[e-mail]>
Allison,

I’ll jump in here with an answer to your question about the groundwater monitoring. I spoke to Nancy about this last week.

The wells will be installed after development is completed, so we can anticipate that groundwater monitoring will start
Spring/Summar 2025.

The City will rely on the status letter report for occupancy purposes. Nancy will update the report this week to include the
latest round of VIMS installations, we will provide you with a copy of the updated report. The complete VIMS Installation
Report will be prepared after all systems have been installed, likely in early 2025.

I will let Nancy jump in on the questions about final remediation report and discharge water.

Thanks,
Catherine

CATHERINE WYFFELS
Air Quality & Environmental Program Manager
(She/Her/Hers)

[phone]

DEPARTMENT of SUSTAINABILITY
SALT LAKE CITY CORPORATION

From: Allison Stanley <[e-mail]>
Sent: Monday, December 16, 2024 9:46 AM
To: Saunders, Nancy <[e-mail]>
Cc: Wyffels, Catherine <[e-mail]>
Subject: (EXTERNAL) Dewatering and Ancipated Schedule at Redwood
12/23/24, 4:36 PM State of Utah Mail - RE: (EXTERNAL) Dewatering and Anticipated Schedule at Redwood
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1818617060751305335&simpl=msg-f:18186170607513053…1/3
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Hi Nancy,

In preparation for the opening date for Redwood Rd, I'm looking to update the file and narrow down on some of the
groundwater work that we did this year.

Would you be able to send over the monthly Discharge Monitoring Reports for the dewatering? Also, could clarify what the
treatment process was for that water before it was discharged? Looking at the NOI for the permit, it looks like culinary
water was added to the 20,000-gallon frac tank to lower the total dissolved solids. Was there any additional treatment for
the water?

Also, I gave Catherine a call about a week ago and asked if there was an anticipated schedule for the final remediation
report and the 2-year groundwater monitoring program that's outlined in the RAP. Do you know if there is a timeframe for
either or these? And are we planning to rely on the status document sent to the City on Nov. 25 until that final remediation
report is completed?

Thank you for your help, I really appreciate it.

Allison
--
Allison Stanley
Environmental Scientist II |
VCP/Brownfields Section
P: [phone]
environmentalresponse.utah.gov
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requirements.

12/23/24, 4:36 PM State of Utah Mail - RE: (EXTERNAL) Dewatering and Anticipated Schedule at Redwood
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1818617060751305335&simpl=msg-f:18186170607513053…2/3
Allison Stanley <[e-mail]>Mon, Dec 16, 2024 at 11:17 AM
To: "Wyffels, Catherine" <[e-mail]>
Thanks Catherine!
[Quoted text hidden]
12/23/24, 4:36 PM State of Utah Mail - RE: (EXTERNAL) Dewatering and Anticipated Schedule at Redwood
https://mail.google.com/mail/u/0/?ik=e22438591e&view=pt&search=all&permthid=thread-f:1818617060751305335&simpl=msg-f:18186170607513053…3/3