DDW-2024-007079

8/23/23, 2:59 PM State of Utah Mail - Slot Canyons Inn Engineering Report
https://mail.google.com/mail/u/0/?ik=f3bcb897f8&view=pt&search=all&permmsgid=msg-a:r7517735176850000423&simpl=msg-a:r7517735176850000…1/1
J. Paul Wright <[e-mail]>
Slot Canyons Inn Engineering Report
J. Paul Wright <[e-mail]>Wed, Aug 23, 2023 at 2:59 PM
To: Kyler LaRose <[e-mail]>
Cc: "[e-mail]" <[e-mail]>, "[e-mail]" <[e-mail]>, "Devan J.
Shields" <[e-mail]>, Danielle Zebelean <[e-mail]>, Deidre Beck <[e-mail]>
Kyler and Devan,
Thank you for the revised engineering report. I have reviewed it and it addresses most of the items that I was looking for.
So, moving forward, I will need to see that the following items have been addressed and submitted as such in a revised
as-built drawing so that we can have it in our records as complying with our rules (as part of the operating permit). Also,
there are still a few items I need verification on and an exception letter for storage submitted (as stated below):
1) For the home booster pump, since I assume that the water system owner lives in the Cliff House, then this home
booster pump can actually be operated as a facility that is part of the water system, assuming that is the case. Do you
know how and where it is installed (outside the house, in the basement, etc). If that is not the case, then an exception will
need to be requested for this potential cross connection. I have attached the items that need to be submitted for a home
booster pump exception.
2) Can you provide me with a copy of the submersible pump make and model and pump curve for the well pump,
especially since it is providing pressure to the whole system.
3) You have said that the smooth nosed sample tap, check valve, and raising up the well head casing to a minimum of 18
inches above grade are being worked on. I will need to see photos that this has been completed and shown in an as-built
drawing, as opposed to just showing those items as proposed to be installed.
4) You mention that some form of backup power will be purchased or installed, I am just wondering what the water system
has or will do in that regards.
5) A storage exception request letter must be submitted. Along with an operating permit for the water system, any
exceptions needed will also be addressed in that letter.
6) Once the Division has a revised Source Protection Plan, then any exceptions needed there along with an exception for
the reduced surface seal can also be addressed (I assume that Bowen Collins is working on this end of things).
Let me know if you have any questions as you work on getting me these last pieces of information and letter(s) that we
need.
Paul
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Items to submit for home booster exception.pdf
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1/3/24, 1:40 PM State of Utah Mail - Slot Canyons Inn Remaining Items
https://mail.google.com/mail/u/0/?ik=f3bcb897f8&view=pt&search=all&permmsgid=msg-a:r6031239138947673667&simpl=msg-a:r603123913894767…1/1
J. Paul Wright <[e-mail]>
Slot Canyons Inn Remaining Items
J. Paul Wright <[e-mail]>Wed, Jan 3, 2024 at 1:28 PM
To: Kyler LaRose <[e-mail]>
Cc: "Devan J. Shields" <[e-mail]>, "[e-mail]" <[e-mail]>
Hey all,
I have a couple of items I need to be able to get things right in the final approval letter, when that happens.
1) Is the hand drawn sketch a schematic of the small booster pump in the home? If so, I need to know what the make,
model, size (hp), and flow rate is. Is there a pressure tank associated with it as well or are you just using the system
pressure from the pump and HD tanks? If so, that should be shown. Also, since this is a facility owned and operated by
the system, I need to make sure that it meets DDW requirements for booster pumps. Is there a pressure gauge and do
you have a backup for this booster pump if it were to go out?
2) The as-built drawings don't provide any detailed information about the pressure tanks. The report says they are 50
gallon tanks but doesn't give any detail on them. Is that their full capacity or just operating capacity? I need to know the
make and model of the three pressure tanks also.
3) Is Image No. 2 the check valve? If that is the case, is the smooth nosed sample tap (Image No. 3) on the well side
(upstream side) of the check valve (the drawing seems to indicate that the check valve is first, prior to the sample tap) ?
The reason this is important is that if a source sample is ever to be taken, we want to make sure it is a clean source
sample and doesn't have a chance to intermix with pressure tanks, treatment or anything else.
4) What is the height of the well casing above the ground surface. It appears to have been raised, I just want to make
sure it is at least 18 inches, since no measurement was shown in the photo (Image no. 4)
Paul
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--
J. Paul Wright, P.E. | District Engineer | Southwest Utah District
435.986.2590 (office) | 435.680.0163 (cell) | 435.986.2595 (fax)
620 S 400 E #400, St. George, UT 84770
DEQ WEBSITE
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA requirements.
5/16/23, 11:26 AM State of Utah Mail - Slot Canyons Inn Evaluation Report
https://mail.google.com/mail/u/0/?ik=f3bcb897f8&view=pt&search=all&permmsgid=msg-a:r-8319181069661917524&simpl=msg-a:r-83191810696619…1/2
J. Paul Wright <[e-mail]>
Slot Canyons Inn Evaluation Report
J. Paul Wright <[e-mail]>Tue, May 16, 2023 at 11:26 AM
To: Kyler LaRose <[e-mail]>
Cc: "Devan J. Shields" <[e-mail]>
Kyler,
Thanks for submitting this. When I have a chance to take a detailed look at this, I will provide more comments about the
evaluation. There are some things that I noticed up front that should be included or that were evaluated that should be
changed.
1) The hydraulic modeling only showed a peak day analysis. Since the pumping system is essentially providing all the
pressure, a peak instantaneous analysis (peak flow in system and pump station design rate) should also be included and
meet a minimum 30 psi throughout the system.
2) I noticed in the source capacity and well section, you used three wells. The only well that has been submitted for
approval and that a PER has been done for is the newest well (Slot Canyons Inn Well #1). This is the only source that
can be and will be allowed to be connected to the system. All other sources should not be tied to the system at all, or
they will be considered unprotected cross connections. The newest well, you say, pumps at 65 gpm. The source
protection plan (PER) shows only 50 gpm is the rate at which the delineations were done. Also, a 24 hour constant rate
test has not been done. This is needed to establish a safe yield and we set that safe yield at 2/3 of the 24 hour constant
rate pump test rate. If the system wants to be able to use 65 gpm as the source capacity for that well, the PER will have
to be revised at that higher rate and a 24 hour constant rate pump test will have to be done at least at 98 gpm.
Otherwise, the safe yield (source capacity for calculating connections allowed) will have to be reduced quite a bit from
your analysis.
Having said that, if the system wants to separate out the other two wells and use those exclusively for irrigation, that
could help solve many of the capacity issues and also eliminate these sources from being tied into the drinking water
system.
3) No as-built drawings have been provided. We need drawings of the well equipping, treatment system and purpose for
treatment, and tanks that they plan on using in the system, and piping (sizes and lengths) and any other relevant
information. This will help us to evaluate whether these facilities meet our minimum requirements or where physical
deficiencies might exist. The report needs to address in the drawings how they plan on making improvements to resolve
these deficiencies because we cannot approve a system until everything meets the DDW rules.
4) As far as storage goes, since this is a transient system, it is possible that they could get an exception from the storage
requirement, as long as they can prove that they have adequate backup power, capacity in their well exceeding their peak
instantaneous demand,and the same for their booster system. Obviously, storage is the best approach, but an exception
from storage capacity is possible with the right justification.
5) Source protection work is continuing on the well. Deidre Beck with the Division of Drinking Water has been working
with Chris Mikell and Chris DeKorver on this from Bowen Collins. This will need to be worked through and concurred with
before the water system can receive approval.
Paul
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--
J. Paul Wright, P.E. | District Engineer | Southwest Utah District
435.986.2590 (office) | 435.680.0163 (cell) | 435.986.2595 (fax)
620 S 400 E #400, St. George, UT 84770
DEQ WEBSITE
5/16/23, 11:26 AM State of Utah Mail - Slot Canyons Inn Evaluation Report
https://mail.google.com/mail/u/0/?ik=f3bcb897f8&view=pt&search=all&permmsgid=msg-a:r-8319181069661917524&simpl=msg-a:r-83191810696619…2/2
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA requirements.