DDW-2024-013120

J. Paul Wright <[e-mail]>
Apple Valley Pipeline Phase II - Review Comments (file #17498, System #27069)
1 message
J. Paul Wright <[e-mail]>Tue, Nov 5, 2024 at 3:30 PM
To: Nathan Wallentine <[e-mail]>
Cc: [e-mail], Apple Valley Mayor <[e-mail]>
Nate,
I have reviewed the plans for the Apple Valley Pipeline Phase II project including the proposed Apple Valley to Cedar
Point Pump Station.
Here is a summary of the project as I gathered from the plans.
The pipeline will include:
1,295 LF of 4-inch DR18 PVC C900 pipe
8,501 LF of 8-inch DR18 PVC C900 pipe
21,777 LF of 8-inch DR14 PVC C900 pipe
Approx 14 isolation gate valves
Approx 11 Air-vacuum release valves
Pump Station with a 250 gallon per minute pumping capacity
Below are my specific comments about the project:
1) As I mentioned on Friday Nov 1, 2024, the pipeline portion of this project looks good from a design perspective. So
work should be able to continue forward with installation of the pipe. Final plan approval for Phase II, including the
pipeline portion will be included in one letter with the pump station.
Pump Station Comments
2) There are four pumps on the pump skid in the pump station. What is the horsepower rating, head rating, pump type
and pump capacity (gpm) of each pump? How many will be used to obtain the 250 gpm station capacity? (It said this is
found in the specifications, but none were submitted with the plans)
3)There needs to be a standard pressure gauge on the discharge side of the pumps and a compound gauge (measuring
both positive and negative pressures) on the suction side of the pumps. This needs to be shown in the details or in your
specs for the pump supplier.
4) Is there backup power provided at the pump station? Since this will technically become the sole source of clean
drinking water for Cedar Point, I am just wondering if this is part of the project.
5) I could not find a site plan or other type of detail showing grading around the pump station. You just need to ensure
that all surrounding ground is graded to drain away from the pump station.
6) It appears you are planning space for future chlorination. However, it does not appear to meet the requirements for gas
chlorination, since it does not have a separate room/closet with all of the ventilation requirements. You will be limited to
liquid types of chlorine (ie, tablet, sodium hypochlorite...) and I just want to make sure that is what you are thinking.
If you have any questions, let me know.
Paul
On Fri, Nov 1, 2024 at 12:51 PM J. Paul Wright <[e-mail]> wrote:
Nate and Tony,
Yes, I have had the plans for about 10 days and my backlog of reviews has been pretty long for the last 6 months or so.
And as you know, we do have up to 30 days to complete our review once a submittal is made. Having said that, I am
11/5/24, 3:31 PM State of Utah Mail - Apple Valley Pipeline Phase II - Review Comments (file #17498, System #27069)
https://mail.google.com/mail/u/0/?ik=f3bcb897f8&view=pt&search=all&permthid=thread-a:r5317818595471268709&simpl=msg-a:r4054176464099124…1/5