DDW-2024-007788

Noah Zorsky <[e-mail]>
Herbicide Use - Interlaken Town
3 messages
Interlaken Clerk <[e-mail]>Thu, May 23, 2024 at 9:34 AM
To: Noah Zorsky <[e-mail]>
Cc: Interlaken Mayor <[e-mail]>
Hi Noah-
Wasatch County has sent our town a notice regarding noxious weeds in our community – they would like us to take measures to control the spread. We are most concerned about our water source protection
zones. Someone mentioned a product called Telar Chlorsulfuron (see attached data sheet) as a non-hazardous herbicide. Does the state approve of this product use in our source protection zone 2 (we
wouldn’t use it in source protection zone 1)? If you don’t know, can you please direct me to the proper source?

Thanks,
Bart Smith
Interlaken Town Administrator
[phone]

From: Noah Zorsky <[e-mail]>
Date: Monday, May 13, 2024 at 7:55 AM
To: Interlaken Clerk <[e-mail]>
Cc: Deidre Beck <[e-mail]>, Interlaken Water <[e-mail]>
Subject: Re: Updated Source Protecon Plan

Bart,

Received. Thank you for adding the salt pile to the PCS inventory list. You can expect a formal concurrence letter in the next few weeks.

Noah Zorsky, PG

Environmental Scientist II | Division of Drinking Water

P: [phone]
drinkingwater.utah.gov

M: [phone]
[e-mail]

5/23/24, 12:10 PM State of Utah Mail - Herbicide Use - Interlaken Town
https://mail.google.com/mail/u/0/?ik=d42b33a28c&view=pt&search=all&permthid=thread-f:1799858110447475582&simpl=msg-f:1799858110447475582&simpl=msg-a:r-4815561755553507964&simpl=…1/6
drinkingwater.utah.gov

On Sun, May 12, 2024 at 5:25 PM Interlaken Clerk <[e-mail]> wrote:
Noah – attached please find the updated Interlaken Town Water Source Protection Plan.
Please contact me if you have any questions.

Thanks,
Bart Smith
Interlaken Town Administrator
[phone]

From: Noah Zorsky <[e-mail]>
Date: Wednesday, April 3, 2024 at 8:05 AM
To: Interlaken Clerk <[e-mail]>
Cc: Deidre Beck <[e-mail]>, Interlaken Water <[e-mail]>
Subject: Re: Updated Source Protecon Plan

Thanks for confirming. Since salt piles are considered a potential contamination source (PCS), I'll need this to be added to the updated DWSP plan before I can concur. Please make the following changes to the updated plan and
resubmit:
add salt piles as a new PCS in zone 2 (section 3).
provide a map plotting the location of the new PCS relative to the protection zones and well.
assess the new PCS as controlled or uncontrolled (section 4). A PCS is considered controlled when one of the four control types is applicable: regulatory, best management practices, negligible quantities, or physical controls. If
the salts are stored in a container or on an impervious surface, I would recommend you state that this PCS is controlled through physical controls. I've attached the source protection user's guide pdf. There are templates in the
appendices that you can reference for assessing PCSs.
I can provide a 90-day courtesy for this to be completed before I send a formal disapproval letter.

Let me know if you have any questions.
Noah Zorsky, PG

Environmental Scientist II | Division of Drinking Water

P: [phone]
drinkingwater.utah.gov

M: [phone]
[e-mail]

5/23/24, 12:10 PM State of Utah Mail - Herbicide Use - Interlaken Town
https://mail.google.com/mail/u/0/?ik=d42b33a28c&view=pt&search=all&permthid=thread-f:1799858110447475582&simpl=msg-f:1799858110447475582&simpl=msg-a:r-4815561755553507964&simpl=…2/6
drinkingwater.utah.gov

On Tue, Apr 2, 2024 at 6:23 PM Interlaken Clerk <[e-mail]> wrote:
Hi Noah – sorry for the delay. I’ve been out of town.

Yes, the salt pile was moved into Protection zone 2 in 2020.

Bart Smith
Interlaken Town Administrator
[phone]

From: Interlaken Water <[e-mail]>
Date: Thursday, March 28, 2024 at 9:57 AM
To: Noah Zorsky <[e-mail]>
Cc: Deidre Beck <[e-mail]>, Interlaken Clerk <[e-mail]>
Subject: Re: Updated Source Protecon Plan

Hi Noah,
I am bringing Bart, the Town Clerk in on this conversation as he has the most recent updates about the source protection plan.
Bart, can you answer this question?

Thank you,
Trent
From: Noah Zorsky <[e-mail]>
Sent: Wednesday, March 27, 2024 4:31 PM
To: [e-mail] <[e-mail]>
Cc: Deidre Beck <[e-mail]>
Subject: Re: Updated Source Protecon Plan

Hi Trent,

I'm reviewing the updated DWSP plan for Wells 1 and 2. I have a note from back in 2018 stating that the Major, Lisa Simpkins, had spoken to source protection staff about Interlaken possibly moving a road salt pile into zone 2. Can
you please confirm if a road salt pile was ever moved into any of the protection zones?

Thanks
Error! Filename not specified.Noah Zorsky, PG
5/23/24, 12:10 PM State of Utah Mail - Herbicide Use - Interlaken Town
https://mail.google.com/mail/u/0/?ik=d42b33a28c&view=pt&search=all&permthid=thread-f:1799858110447475582&simpl=msg-f:1799858110447475582&simpl=msg-a:r-4815561755553507964&simpl=…3/6

Environmental Scientist II | Division of Drinking Water

P: [phone]
drinkingwater.utah.gov
Error! Filename not specified.Error! Filename not specified.

M: [phone]
[e-mail]

drinkingwater.utah.gov

On Wed, Mar 27, 2024 at 4:12 PM Deidre Beck <[e-mail]> wrote:

---------- Forwarded message ---------
From: Trent Davis <[e-mail]>
Date: Mon, Sep 12, 2022 at 4:34 PM
Subject: Updated Source Protection Plan
To: Deidre Beck <[e-mail]>

Hi Deidre,
I have an updated source protection plan for Interlaken Town – UTAH26055. I have not had a lot of experience in updating source protection plans so I have leaned on the town clerk who helped with the submittal of the last SPP.
Would you mind looking over the attached documentation and letting me know if this meets the requirements? I would greatly appreciate any guidance you could offer.

Thank you,
Trent Davis

--
Error! Filename
not specified.Deidre Beck, PG, GISP
Environmental Scientist III | Permitting
M: [phone]
5/23/24, 12:10 PM State of Utah Mail - Herbicide Use - Interlaken Town
https://mail.google.com/mail/u/0/?ik=d42b33a28c&view=pt&search=all&permthid=thread-f:1799858110447475582&simpl=msg-f:1799858110447475582&simpl=msg-a:r-4815561755553507964&simpl=…4/6
P: [phone]
drinkingwater.utah.gov
Error! Filename not
specified.
Error! Filename not
specified.

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Telar XP Bayer SDS v2019_201905280815560222.pdf
97K
Noah Zorsky <[e-mail]>Thu, May 23, 2024 at 11:32 AM
To: Interlaken Clerk <[e-mail]>
Cc: Interlaken Mayor <[e-mail]>
Hi Bart,
The DDW does not have the authority to prevent you from using a specific product/chemical. I spoke with the source protection team and we're not sure who would be able to confirm if that herbicide is or is not approved. Perhaps the
manufacturer or EPA would be a better source for that question.
From a source protection standpoint, I must recommend that mechanical removal of weeds is always preferable. If chemicals are necessary, I suggest that you communicate the importance of proper application as it relates to drinking
water in your next town meeting. Specifically, the personnel who will be applying the herbicide should be educated on the importance of using the chemical as directed by the manufacturer's instructions. If chemicals are used, include a
statement in the implementation section of your next updated DWSP plan stating that Interlaken's groundskeepers/maintenance personnel are using best management practices when applying herbicides within the protection zones by
following the manufacturer's instructions.
Thanks
Noah Zorsky, PG
Environmental Scientist II | Division of Drinking Water | Source Protection
P: [phone]
drinkingwater.utah.gov
M: [phone]
[e-mail]
drinkingwater.utah.gov
[Quoted text hidden]
Noah Zorsky <[e-mail]>Thu, May 23, 2024 at 11:40 AM
To: Interlaken Clerk <[e-mail]>
Cc: Interlaken Mayor <[e-mail]>
I've attached the DDW factsheet on pesticides which may provide helpful information on best management practices for herbicides.
5/23/24, 12:10 PM State of Utah Mail - Herbicide Use - Interlaken Town
https://mail.google.com/mail/u/0/?ik=d42b33a28c&view=pt&search=all&permthid=thread-f:1799858110447475582&simpl=msg-f:1799858110447475582&simpl=msg-a:r-4815561755553507964&simpl=…5/6
Noah Zorsky, PG
Environmental Scientist II | Division of Drinking Water | Source Protection
P: [phone]
drinkingwater.utah.gov
M: [phone]
[e-mail]
drinkingwater.utah.gov
[Quoted text hidden]
Pesticide Factsheet.pdf
574K
5/23/24, 12:10 PM State of Utah Mail - Herbicide Use - Interlaken Town
https://mail.google.com/mail/u/0/?ik=d42b33a28c&view=pt&search=all&permthid=thread-f:1799858110447475582&simpl=msg-f:1799858110447475582&simpl=msg-a:r-4815561755553507964&simpl=…6/6