DDW-2025-000864

Danielle Zebelean <[e-mail]>
Parowan System-Specific Source Sizing Standard
21 messages
Aaron Anderson <[e-mail]>Wed, Sep 20, 2023 at 4:24 PM
To: Michael Newberry <[e-mail]>, Danielle Zebelean <[e-mail]>
Michael/Danielle,

I’m a little behind schedule right now, but I am planning to have an engineering study over to you in the next couple of days covering the proposed system-specific source sizing standardfor Parowan City.

Just wanted to give you a heads up that it will coming your way shortly for review.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

Michael Newberry <[e-mail]>Thu, Sep 21, 2023 at 11:31 AMTo: Aaron Anderson <[e-mail]>
Cc: Danielle Zebelean <[e-mail]>
Sounds good, thanks for the heads up.
Michael Newberry, P.E.
Permitting Section Manager | Division of Drinking Water
P: [phone]
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
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Aaron Anderson <[e-mail]>Fri, Sep 22, 2023 at 4:06 PM
To: Danielle Zebelean <[e-mail]>Cc: Michael Newberry <[e-mail]>, "[e-mail]" <[e-mail]>, "Kelly Stones ([e-mail])" <[e-mail]>
Danielle,

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…1/27
Please find attached the engineering study pertaining to the system-specific source and storage sizing standards for Parowan City.

Thank you for taking the time to review the analysis. Please let me know if you have any questions as you review the study.

Have a great weekend!
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Michael Newberry, P.E.
Permitting Section Manager | Division of Drinking Water
P: [phone]
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

[Quoted text hidden]
State of Utah System Specific Sizing Engineering Study_Parowan City_09.22.2023.pdf351K
Danielle Zebelean <[e-mail]>Fri, Sep 22, 2023 at 5:55 PM
To: Aaron Anderson <[e-mail]>Cc: "Kelly Stones ([e-mail])" <[e-mail]>, Michael Newberry <[e-mail]>, "[e-mail]" <[e-mail]>
Received. Thank you Aaron!
Dani
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--Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
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Danielle Zebelean <[e-mail]>Thu, Sep 28, 2023 at 4:36 PMTo: Aaron Anderson <[e-mail]>
Cc: "Kelly Stones ([e-mail])" <[e-mail]>, "[e-mail]" <[e-mail]>, "J. Paul Wright" <[e-mail]>
Hi Aaron,
Thank you for the report. As a whole I agree with the methodology used in this report to be conservative and base the minimum sizing standards on the homes that use culinary water. I
did have a few comments before moving forward to finalize this.
1. I noticed the historical ERCs in Table 1 are slightly less than what is showing on Parowan's water use report from the Division of Water Rights. How did you calculate these values?Additionally, should Parowan be providing those to Water Rights instead of the auto generated values from the metered water use?
2. With the proposed minimum sizing standards of 1,033 gal/day/ERC and 561 gallons/ERC for source and storage, respectively, the 2022 ERC value of 1,934, and the fire storage of180,000 gallons Parowans total current requirements would be 1,997,822 gal/day or 1,387 gpm for source and 1,264,974 gallons for storage. Parowans total source and storage
capacity right now is 1,777 gpm and 2,000,000 gallons, respectively. We are missing a safe yield for the main canyon spring (WS001) and I did not take into account the racetrackwell (WS006). So they are compliant for both source and storage capacity with the proposed sizing standards.
3. We are currently planning on re-evaluating the source and storage requirements every three years. Is Parowan comfortable that they will need additional engineering reports in thefuture if they want to use what is proposed in the engineering study?
That's all, please let me know if you have any followup questions or comments.
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…2/27
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
Aaron Anderson <[e-mail]>Mon, Oct 9, 2023 at 1:51 PMTo: Danielle Zebelean <[e-mail]>
Cc: "Kelly Stones ([e-mail])" <[e-mail]>, "[e-mail]" <[e-mail]>, "J. Paul Wright" <[e-mail]>
Dani,

Thanks for taking the time to review the report. Below are responses to your questions:

1. 1. I noticed the historical ERCs in Table 1 are slightly less than what is showing on Parowan's water use report from the Division of Water Rights. How did you calculate thesevalues? Additionally, should Parowan be providing those to Water Rights instead of the auto generated values from the metered water use?
I calculated these values by comparing the average annual water use of meters larger than 1” with the water use of ¾” and 1” meters (those that service a typical home). For
instance, residential meters larger than 1” used on average 4.4 times more water than a single-family home, so I scaled those larger meters up to the corresponding # of theERCs. The table below is in the draft Parowan City master plan (2021 ERC calculation). If it would be helpful to add this to the source & storage sizing document, I can do that.
ERC estimates for the other years were then estimated based on historical/projected growth. As far as reporting numbers to the Division of Water Rights, I’m generally in favor ofhaving the city report these values rather than using auto-generated values but would like to know if Dan or Kelly have a preference on this.
Culinary Water System ERCs (2021)
Meter Type Connection Count ERC Multiplier1 ERCs
3/4" and 1" Residential 1,495 1 1,495
Larger than 1" Residential 12 4.4 53
3/4" and 1" Non-Residential 71 1 71
Larger than 1" Non-Residential 29 8 232
Multi User Meter 14 2.6 36
Total 1,887
2. With the proposed minimum sizing standards of 1,033 gal/day/ERC and 561 gallons/ERC for source and storage, respectively, the 2022 ERC value of 1,934, and the fire storage of
180,000 gallons Parowans total current requirements would be 1,997,822 gal/day or 1,387 gpm for source and 1,264,974 gallons for storage. Parowans total source and storagecapacity right now is 1,777 gpm and 2,000,000 gallons, respectively. We are missing a safe yield for the main canyon spring (WS001) and I did not take into account the racetrack
well (WS006). So they are compliant for both source and storage capacity with the proposed sizing standards.
Thanks. Based on my understanding, the yield from the Main Canyon Spring is 80 gpm. The yield from the Racetrack Well is 300 gpm, but the city rarely uses this source.
3. We are currently planning on re-evaluating the source and storage requirements every three years. Is Parowan comfortable that they will need additional engineering reports in thefuture if they want to use what is proposed in the engineering study?
Yes, the city understands that it will need to continue to evaluate water use and update source and storage sizing requirements in the future with new engineering studies.
Hopefully these responses answer your questions.
Thanks,
Aaron
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435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…3/27

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Danielle Zebelean <[e-mail]>Tue, Oct 10, 2023 at 9:25 AM
To: Aaron Anderson <[e-mail]>Cc: "Kelly Stones ([e-mail])" <[e-mail]>, "[e-mail]" <[e-mail]>, "J. Paul Wright" <[e-mail]>
Thank you Aaron,
Yes please add the table to the report. I would prefer that Parowan report those ERC numbers to Brandon Mellor with Water Rights. Also, based on our rules the safe yield is the 25thpercentile of 3 years worth of flow data. Using what they reported to Water Rights the last 4 years the yield would be 92.1 gpm. I can get that added to our database if Parowan agrees.
Once I get the updated report from you I can set the standard for Parowan.
Please let me know if you have any questions. Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMArequirements.
[Quoted text hidden]
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Aaron Anderson <[e-mail]>Mon, Oct 16, 2023 at 8:49 PMTo: Danielle Zebelean <[e-mail]>
Cc: "Kelly Stones ([e-mail])" <[e-mail]>, "[e-mail]" <[e-mail]>, "J. Paul Wright" <[e-mail]>
Dani,

Thanks for all of your help with this. Attached is the updated report including the table showing how the total number of ERCs was calculated.

Please let me know if you have any other questions or if you need any other information.
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1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…4/27
State of Utah System Specific Sizing Engineering Study_Parowan City_10.16.2023.pdf
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Danielle Zebelean <[e-mail]>Thu, Nov 2, 2023 at 9:24 AM
To: Aaron Anderson <[e-mail]>Cc: "Kelly Stones ([e-mail])" <[e-mail]>, "[e-mail]" <[e-mail]>, "J. Paul Wright" <[e-mail]>
Thank you for your patience Aaron,
The end of October was rather busy for me so I am circling back to this now. I am waiting for our water use application to come back online and I will complete this as soon as possible.
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
Aaron Anderson <[e-mail]>Thu, Jun 6, 2024 at 2:53 PMTo: Danielle Zebelean <[e-mail]>
Dani,

I didn’t catch this until now, but I had a question for you on the Parowan City Source and Storage Sizing Requirements. In the approval letter that we received from Marianne Booth last
December for Parowan, it states that the average annual demand per ERC is 204,765 gallons per year per ERC which does not match the value proposed in the engineering study thatwas approved (163,772 gallon per year per ERC).

Would you mind checking on this for me? I’ve attached the engineering study and approval letter.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
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2 attachments
State of Utah System Specific Sizing Engineering Study_Parowan City_10.16.2023.pdf
360K
DDW-2023-040573.pdf
281K
Danielle Zebelean <[e-mail]>Mon, Jun 10, 2024 at 9:16 AM
To: Aaron Anderson <[e-mail]>
Thank you for the follow up Aaron,
You are correct that it should be 163,772 gal/year. I will also update the 561 gal/day to 449 gal/day for the equalization storage. Sorry that I fumbled that. I will get that updated and a new
letter sent out this week.
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…5/27
Danielle Zebelean <[e-mail]>Thu, Jun 13, 2024 at 2:55 PM
To: Aaron Anderson <[e-mail]>
Hi Aaron,
Will you please verify this is correct before I finalize it?
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
11010.pdf29K
Danielle Zebelean <[e-mail]>Mon, Jun 24, 2024 at 9:32 AMTo: Aaron Anderson <[e-mail]>
Hi Aaron,
Following up on this, will you let me know that the report is accurate and then I can finalize and resend the letter.
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
Aaron Anderson <[e-mail]>Mon, Jun 24, 2024 at 9:54 AMTo: Danielle Zebelean <[e-mail]>
Hey Dani,

Sorry for not getting back sooner. In the draft you sent me, it shows the AAD per ERC is 204,765. From the study we submitted, it should be 163,772 (see attachedengineering report).
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435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…6/27

From: Michael Newberry <[e-mail]>
Sent: Thursday, September 21, 2023 11:32 AMTo: Aaron Anderson <[e-mail]>
Cc: Danielle Zebelean <[e-mail]>Subject: Re: Parowan System-Specific Source Sizing Standard

Sounds good, thanks for the heads up.
Michael Newberry, P.E.
Permitting Section Manager | Division of Drinking Water
P: [phone]
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

[Quoted text hidden]
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State of Utah System Specific Sizing Engineering Study_Parowan City_10.16.2023.pdf
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Danielle Zebelean <[e-mail]>Mon, Jun 24, 2024 at 9:58 AM
To: Aaron Anderson <[e-mail]>
Ah the joys of databases. I have it correct on our module, but the changes are not saving on the reports
I will need to work on that. Hopefully by the end of the week I can get the reports to pull the more recent values.
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
Aaron Anderson <[e-mail]>Mon, Jun 24, 2024 at 10:15 AMTo: Danielle Zebelean <[e-mail]>
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…7/27
Sounds good, thanks for your help with this.

Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Danielle Zebelean <[e-mail]>
Sent: Monday, June 24, 2024 9:59 AM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Ah the joys of databases. I have it correct on our module, but the changes are not saving on the reports

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Danielle Zebelean <[e-mail]>Thu, Jul 25, 2024 at 3:17 PM
To: Aaron Anderson <[e-mail]>
Hi Aaron!
Just keeping you in the loop. We are still working on this issue with the database pulling the report values over correctly.
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
Aaron Anderson <[e-mail]>
To: Danielle Zebelean <[e-mail]>
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…8/27
Thanks for the update!

Aaron

From: Danielle Zebelean <[e-mail]>
Sent: Thursday, July 25, 2024 3:17 PM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Hi Aaron!

Just keeping you in the loop. We are still working on this issue with the database pulling the report values over correctly.

Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Jun 24, 2024 at 10:16 AM Aaron Anderson <[e-mail]> wrote:
Sounds good, thanks for your help with this.

Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:17775970725817211…9/27

From: Danielle Zebelean <[e-mail]>
Sent: Monday, June 24, 2024 9:59 AM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Ah the joys of databases. I have it correct on our module, but the changes are not saving on the reports

I will need to work on that. Hopefully by the end of the week I can get the reports to pull the more recent values.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…10/27
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Jun 24, 2024 at 9:55 AM Aaron Anderson <[e-mail]> wrote:
Hey Dani,

Sorry for not getting back sooner. In the draft you sent me, it shows the AAD per ERC is 204,765. From the study we submitted, it should be 163,772 (see attached e

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Danielle Zebelean <[e-mail]>
Sent: Monday, June 24, 2024 9:33 AM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Hi Aaron,

Following up on this, will you let me know that the report is accurate and then I can finalize and resend the letter.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…11/27

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Thu, Jun 13, 2024 at 2:55 PM Danielle Zebelean <[e-mail]> wrote:
Hi Aaron,

Will you please verify this is correct before I finalize it?

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Jun 10, 2024 at 9:16 AM Danielle Zebelean <[e-mail]> wrote:
Thank you for the follow up Aaron,

You are correct that it should be 163,772 gal/year. I will also update the 561 gal/day to 449 gal/day for the equalization storage. Sorry that I fumbled that. I will get that updated and

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…12/27
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Thu, Jun 6, 2024 at 2:53 PM Aaron Anderson <[e-mail]> wrote:
Dani,

I didn’t catch this until now, but I had a question for you on the Parowan City Source and Storage Sizing Requirements. In the approval letter that we received from Marianne Boo
is 204,765 gallons per year per ERC which does not match the value proposed in the engineering study that was approved (163,772 gallon per year per ERC).

Would you mind checking on this for me? I’ve attached the engineering study and approval letter.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Aaron AndersonSent: Monday, October 16, 2023 8:49 PM
To: Danielle Zebelean <[e-mail]>Cc: Kelly Stones ([e-mail]) <[e-mail]>; [e-mail]; J. Paul Wright <[e-mail]>
Subject: RE: Parowan System-Specific Source Sizing Standard

Dani,

Thanks for all of your help with this. Attached is the updated report including the table showing how the total number of ERCs was calculated.

Please let me know if you have any other questions or if you need any other information.

Thanks,
Aaron

From: Danielle Zebelean <[e-mail]>Sent: Tuesday, October 10, 2023 9:26 AM
To: Aaron Anderson <[e-mail]>Cc: Kelly Stones ([e-mail]) <[e-mail]>; [e-mail]; J. Paul Wright <[e-mail]>
Subject: Re: Parowan System-Specific Source Sizing Standard

Thank you Aaron,

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…13/27
Yes please add the table to the report. I would prefer that Parowan report those ERC numbers to Brandon Mellor with Water Rights. Also, based on our rules the safe yield is the
Rights the last 4 years the yield would be 92.1 gpm. I can get that added to our database if Parowan agrees.

Once I get the updated report from you I can set the standard for Parowan.

Please let me know if you have any questions. Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Oct 9, 2023 at 1:51 PM Aaron Anderson <[e-mail]> wrote:
Dani,

Thanks for taking the time to review the report. Below are responses to your questions:

1. 1. I noticed the historical ERCs in Table 1 are slightly less than what is showing on Parowan's water use report from the Division of Water Rights. How did you calculate
instead of the auto generated values from the metered water use?
I calculated these values by comparing the average annual water use of meters larger than 1” with the water use of ¾” and 1” meters (those that service a typical hommore water than a single-family home, so I scaled those larger meters up to the corresponding # of the ERCs. The table below is in the draft Parowan City master plan
sizing document, I can do that. ERC estimates for the other years were then estimated based on historical/projected growth. As far as reporting numbers to the Divisiorather than using auto-generated values but would like to know if Dan or Kelly have a preference on this.
Culinary Water System ERCs (2021)
Meter Type Connection Count ERC Multiplier1 ERCs
3/4" and 1" Residential 1,495 1 1,495
Larger than 1" Residential 12 4.4 53
3/4" and 1" Non-Residential 71 1 71
Larger than 1" Non-Residential 29 8 232
Multi User Meter 14 2.6 36
Total 1,887
2. With the proposed minimum sizing standards of 1,033 gal/day/ERC and 561 gallons/ERC for source and storage, respectively, the 2022 ERC value of 1,934, and the fir1,997,822 gal/day or 1,387 gpm for source and 1,264,974 gallons for storage. Parowans total source and storage capacity right now is 1,777 gpm and 2,000,000 gallon
and I did not take into account the racetrack well (WS006). So they are compliant for both source and storage capacity with the proposed sizing standards.
Thanks. Based on my understanding, the yield from the Main Canyon Spring is 80 gpm. The yield from the Racetrack Well is 300 gpm, but the city rarely uses this sou
3. We are currently planning on re-evaluating the source and storage requirements every three years. Is Parowan comfortable that they will need additional engineering re
Yes, the city understands that it will need to continue to evaluate water use and update source and storage sizing requirements in the future with new engineering stud
Hopefully these responses answer your questions.
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…14/27
Thanks,
Aaron

From: Danielle Zebelean <[e-mail]>
Sent: Thursday, September 28, 2023 4:36 PMTo: Aaron Anderson <[e-mail]>
Cc: Kelly Stones ([e-mail]) <[e-mail]>; [e-mail]; J. Paul Wright <[e-mail]>Subject: Re: Parowan System-Specific Source Sizing Standard

Hi Aaron,

Thank you for the report. As a whole I agree with the methodology used in this report to be conservative and base the minimum sizing standards on the homes that use culina
1. I noticed the historical ERCs in Table 1 are slightly less than what is showing on Parowan's water use report from the Division of Water Rights. How did you calculate th
instead of the auto generated values from the metered water use?2. With the proposed minimum sizing standards of 1,033 gal/day/ERC and 561 gallons/ERC for source and storage, respectively, the 2022 ERC value of 1,934, and the fir
1,997,822 gal/day or 1,387 gpm for source and 1,264,974 gallons for storage. Parowans total source and storage capacity right now is 1,777 gpm and 2,000,000 gallonand I did not take into account the racetrack well (WS006). So they are compliant for both source and storage capacity with the proposed sizing standards.
3. We are currently planning on re-evaluating the source and storage requirements every three years. Is Parowan comfortable that they will need additional engineering re
That's all, please let me know if you have any followup questions or comments.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Fri, Sep 22, 2023 at 5:55 PM Danielle Zebelean <[e-mail]> wrote:
Received. Thank you Aaron!

Dani

On Fri, Sep 22, 2023 at 3:06 PM Aaron Anderson <[e-mail]> wrote:
Danielle,

Please find attached the engineering study pertaining to the system-specific source and storage sizing standards for Parowan City.

Thank you for taking the time to review the analysis. Please let me know if you have any questions as you review the study.

Have a great weekend!
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…15/27

Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Michael Newberry <[e-mail]>
Sent: Thursday, September 21, 2023 11:32 AMTo: Aaron Anderson <[e-mail]>
Cc: Danielle Zebelean <[e-mail]>Subject: Re: Parowan System-Specific Source Sizing Standard

Sounds good, thanks for the heads up.
Michael Newberry, P.E.
Permitting Section Manager | Division of Drinking Water
P: [phone]
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Wed, Sep 20, 2023 at 4:24 PM Aaron Anderson <[e-mail]> wrote:
Michael/Danielle,

I’m a little behind schedule right now, but I am planning to have an engineering study over to you in the next couple of days covering the proposed system-specific sou

Just wanted to give you a heads up that it will coming your way shortly for review.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…16/27

--

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

Danielle Zebelean <[e-mail]>Tue, Nov 12, 2024 at 3:23 PM
To: Aaron Anderson <[e-mail]>
Hi Aaron,
Checking in again. Sadly this is still not fixed. Trying to compete for priority with our two developers to approve the fix. It looks like right now we have it on the schedule for January 2025
for them to circle around to the module.
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
[Quoted text hidden]
Aaron Anderson <[e-mail]>To: Danielle Zebelean <[e-mail]>
Thanks for the update!

Aaron

From: Danielle Zebelean <[e-mail]>
Sent: Tuesday, November 12, 2024 3:24 PM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Hi Aaron,

Checking in again. Sadly this is still not fixed. Trying to compete for priority with our two developers to approve the fix. It looks like right now we have it on the schedule for January 2025 for th

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…17/27
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Thu, Jul 25, 2024 at 4:31 PM Aaron Anderson <[e-mail]> wrote:
Thanks for the update!

Aaron

From: Danielle Zebelean <[e-mail]>
Sent: Thursday, July 25, 2024 3:17 PM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Hi Aaron!

Just keeping you in the loop. We are still working on this issue with the database pulling the report values over correctly.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Jun 24, 2024 at 10:16 AM Aaron Anderson <[e-mail]> wrote:
Sounds good, thanks for your help with this.
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…18/27

Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Danielle Zebelean <[e-mail]>
Sent: Monday, June 24, 2024 9:59 AM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

Ah the joys of databases. I have it correct on our module, but the changes are not saving on the reports

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…19/27
I will need to work on that. Hopefully by the end of the week I can get the reports to pull the more recent values.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Jun 24, 2024 at 9:55 AM Aaron Anderson <[e-mail]> wrote:
Hey Dani,

Sorry for not getting back sooner. In the draft you sent me, it shows the AAD per ERC is 204,765. From the study we submitted, it should be 163,772 (see attache

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Danielle Zebelean <[e-mail]>
Sent: Monday, June 24, 2024 9:33 AM
To: Aaron Anderson <[e-mail]>
Subject: Re: FW: Parowan System-Specific Source Sizing Standard

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…20/27
Hi Aaron,

Following up on this, will you let me know that the report is accurate and then I can finalize and resend the letter.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Thu, Jun 13, 2024 at 2:55 PM Danielle Zebelean <[e-mail]> wrote:
Hi Aaron,

Will you please verify this is correct before I finalize it?

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Jun 10, 2024 at 9:16 AM Danielle Zebelean <[e-mail]> wrote:
Thank you for the follow up Aaron,
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…21/27

You are correct that it should be 163,772 gal/year. I will also update the 561 gal/day to 449 gal/day for the equalization storage. Sorry that I fumbled that. I will get that updated an

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Thu, Jun 6, 2024 at 2:53 PM Aaron Anderson <[e-mail]> wrote:
Dani,

I didn’t catch this until now, but I had a question for you on the Parowan City Source and Storage Sizing Requirements. In the approval letter that we received from Marianne Bis 204,765 gallons per year per ERC which does not match the value proposed in the engineering study that was approved (163,772 gallon per year per ERC).

Would you mind checking on this for me? I’ve attached the engineering study and approval letter.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Aaron Anderson
Sent: Monday, October 16, 2023 8:49 PMTo: Danielle Zebelean <[e-mail]>
Cc: Kelly Stones ([e-mail]) <[e-mail]>; [e-mail]; J. Paul Wright <[e-mail]>Subject: RE: Parowan System-Specific Source Sizing Standard

1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…22/27
Dani,

Thanks for all of your help with this. Attached is the updated report including the table showing how the total number of ERCs was calculated.

Please let me know if you have any other questions or if you need any other information.

Thanks,
Aaron

From: Danielle Zebelean <[e-mail]>
Sent: Tuesday, October 10, 2023 9:26 AMTo: Aaron Anderson <[e-mail]>
Cc: Kelly Stones ([e-mail]) <[e-mail]>; [e-mail]; J. Paul Wright <[e-mail]>Subject: Re: Parowan System-Specific Source Sizing Standard

Thank you Aaron,

Yes please add the table to the report. I would prefer that Parowan report those ERC numbers to Brandon Mellor with Water Rights. Also, based on our rules the safe yield is t
Rights the last 4 years the yield would be 92.1 gpm. I can get that added to our database if Parowan agrees.

Once I get the updated report from you I can set the standard for Parowan.

Please let me know if you have any questions. Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Mon, Oct 9, 2023 at 1:51 PM Aaron Anderson <[e-mail]> wrote:
Dani,

Thanks for taking the time to review the report. Below are responses to your questions:

1. 1. I noticed the historical ERCs in Table 1 are slightly less than what is showing on Parowan's water use report from the Division of Water Rights. How did you calcula
instead of the auto generated values from the metered water use?
I calculated these values by comparing the average annual water use of meters larger than 1” with the water use of ¾” and 1” meters (those that service a typical hmore water than a single-family home, so I scaled those larger meters up to the corresponding # of the ERCs. The table below is in the draft Parowan City master p
sizing document, I can do that. ERC estimates for the other years were then estimated based on historical/projected growth. As far as reporting numbers to the Divirather than using auto-generated values but would like to know if Dan or Kelly have a preference on this.
Culinary Water System ERCs (2021)
Meter Type Connection Count ERC Multiplier1 ERCs
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…23/27
3/4" and 1" Residential 1,495 1 1,495
Larger than 1" Residential 12 4.4 53
3/4" and 1" Non-Residential 71 1 71
Larger than 1" Non-Residential 29 8 232
Multi User Meter 14 2.6 36
Total 1,887
2. With the proposed minimum sizing standards of 1,033 gal/day/ERC and 561 gallons/ERC for source and storage, respectively, the 2022 ERC value of 1,934, and the
1,997,822 gal/day or 1,387 gpm for source and 1,264,974 gallons for storage. Parowans total source and storage capacity right now is 1,777 gpm and 2,000,000 galand I did not take into account the racetrack well (WS006). So they are compliant for both source and storage capacity with the proposed sizing standards.
Thanks. Based on my understanding, the yield from the Main Canyon Spring is 80 gpm. The yield from the Racetrack Well is 300 gpm, but the city rarely uses this s
3. We are currently planning on re-evaluating the source and storage requirements every three years. Is Parowan comfortable that they will need additional engineering
Yes, the city understands that it will need to continue to evaluate water use and update source and storage sizing requirements in the future with new engineering s
Hopefully these responses answer your questions.
Thanks,
Aaron

From: Danielle Zebelean <[e-mail]>
Sent: Thursday, September 28, 2023 4:36 PMTo: Aaron Anderson <[e-mail]>
Cc: Kelly Stones ([e-mail]) <[e-mail]>; [e-mail]; J. Paul Wright <[e-mail]>Subject: Re: Parowan System-Specific Source Sizing Standard

Hi Aaron,

Thank you for the report. As a whole I agree with the methodology used in this report to be conservative and base the minimum sizing standards on the homes that use culi
1. I noticed the historical ERCs in Table 1 are slightly less than what is showing on Parowan's water use report from the Division of Water Rights. How did you calculate
instead of the auto generated values from the metered water use?2. With the proposed minimum sizing standards of 1,033 gal/day/ERC and 561 gallons/ERC for source and storage, respectively, the 2022 ERC value of 1,934, and the
1,997,822 gal/day or 1,387 gpm for source and 1,264,974 gallons for storage. Parowans total source and storage capacity right now is 1,777 gpm and 2,000,000 galand I did not take into account the racetrack well (WS006). So they are compliant for both source and storage capacity with the proposed sizing standards.
3. We are currently planning on re-evaluating the source and storage requirements every three years. Is Parowan comfortable that they will need additional engineering
That's all, please let me know if you have any followup questions or comments.

Thanks!

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…24/27

On Fri, Sep 22, 2023 at 5:55 PM Danielle Zebelean <[e-mail]> wrote:
Received. Thank you Aaron!

Dani

On Fri, Sep 22, 2023 at 3:06 PM Aaron Anderson <[e-mail]> wrote:
Danielle,

Please find attached the engineering study pertaining to the system-specific source and storage sizing standards for Parowan City.

Thank you for taking the time to review the analysis. Please let me know if you have any questions as you review the study.

Have a great weekend!

Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

From: Michael Newberry <[e-mail]>
Sent: Thursday, September 21, 2023 11:32 AMTo: Aaron Anderson <[e-mail]>
Cc: Danielle Zebelean <[e-mail]>Subject: Re: Parowan System-Specific Source Sizing Standard

Sounds good, thanks for the heads up.
Michael Newberry, P.E.
Permitting Section Manager | Division of Drinking Water
P: [phone]
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

On Wed, Sep 20, 2023 at 4:24 PM Aaron Anderson <[e-mail]> wrote:
Michael/Danielle,

I’m a little behind schedule right now, but I am planning to have an engineering study over to you in the next couple of days covering the proposed system-specific s
1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…25/27

Just wanted to give you a heads up that it will coming your way shortly for review.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

--

Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov

Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.

Danielle Zebelean <[e-mail]>Mon, Jan 27, 2025 at 4:36 PM
To: Aaron Anderson <[e-mail]>
Alright! Finally got the bug fixed in the module. Thank you so much for your patience. I will amend the letter today and get it sent out. You can look on waterlink to see that the finalized
standards are the correct numbers now.
Thanks!
Dani Zebelean, P.E.
Environmental Engineer III | Division of Drinking Water
M: [phone]
Hours: M - Th 7 am to 5 pm
drinkingwater.utah.gov
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA
requirements.
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1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…26/27
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Michael/Danielle,

I’m a little behind schedule right now, but I am planning to have an engineering study over to you in the next couple of days covering the proposed system-specific source sizing standard for Parowan City.

Just wanted to give you a heads up that it will coming your way shortly for review.

Thanks,
Aaron

Aaron Anderson, P.E.
_______________________
435.656.3299 Office
435.680.5147 Cell
801.495.2225 Fax
20 N. Main St., Ste. 107
St. George, Utah 84770
www.bowencollins.com

--
[Quoted text hidden]
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1/27/25, 4:36 PM State of Utah Mail - Parowan System-Specific Source Sizing Standard
https://mail.google.com/mail/u/0/?ik=82c167e5f1&view=pt&search=all&permthid=thread-f:1777597072581721184&simpl=msg-f:1777597072581721…27/27