HomeMy WebLinkAboutDDW-2024-006609
March 18, 2024
Richard Droesbeke
Rendezvous Beach
PO Box 184
Garden City, Utah 84028
Subject:Operating Permit, Pump Station Upgrade (PF001), Hydropneumatic Tank Replacement (HD001), 125K Storage Tank Repair (ST002), Chlorinator Installation (TP001); Rendezvous Beach,
System #17023, File #13346
Dear Richard Droesbeke:
The Division of Drinking Water (the Division) received a request for an Operating Permit for the Pump Station Upgrade (PF001), Hydropneumatic Tank Replacement (HD001), 125K
Storage Tank Repair (ST002), Chlorinator Installation (TP001) from your consultant, Eric
Dursteler, P.E. with Forsgren Engineering on February 29, 2024. The Division issued Plan Approval for this project on April 28, 2023. Photo evidence of the completion of the project
was submitted to the Division. This project has met all the conditions for receiving an operating permit.
Our understanding of the Pump Station Upgrade (PF001) portion of the project was the replacement of the two existing 175 gallon per minute (gpm) booster pumps with two Barmesa 10 HP,
185 gpm at 145 feet TDH booster pumps and installation of a new Barmesa 25 HP, 640 gpm at 140 feet TDH booster pump. Additional work included the re-plumbing of piping, manifolds, valves,
and all appurtenances necessary for the pump upgrades, all NSF/ANSI 61 certified.
Upgrades of the control switches, integration, telemetry, and other appurtenances including the
installation of a VFD for the new 600 gpm pump were installed to support the upgrades to the
booster pumps.
Our understanding of the Hydropneumatic Tank Replacement (HD001) portion of the project was
the removal of the existing inactive hydropneumatic tanks and the installation of two Wessels
FXT-415 115-gallon expansion tanks. Additional work included the re-plumbing of piping,
manifolds, valves, and all appurtenances necessary for the expansion tanks, all NSF/ANSI
61 certified.
Our understanding of the 125K Storage Tank Repair (ST002) was the removal of the existing tar and gravel on the tank roof and installation of Versico 80 mil TPO membrane over the entire
roof and extending down the walls sufficient to seal all wall-roof connection concrete deterioration. Tank repairs also included the replacement of the existing internal ladder with
a TRI-ARC aluminum ladder and the lowering of the elevation of the overflow pipe on the tank wall. All materials necessary for the repairs are NSF/ANSI 60 and 61 certified.
The letter includes the following sections and addenda for the chlorinator portion of the project:
1. Project Summary for Chlorinator (TP001)
2. Operating Permit for Chlorinator (TP001)
3. Monitoring and Reporting Requirements (Addendum 1)
Our understanding of the Chlorinator (TP001) portion of the project was the installation of a sodium hypochlorite chlorinator treatment plant to provide secondary disinfection. The equipment
installed is detailed below. The NSF/ANSI 60 certified 12% sodium hypochlorite will be purchased from Thatcher Chemical. The Chlorinator is identified as TP001 in the Division’s database.
The Chlorinator (TP001) included in this project has been completed according to the following:
The proposed Chlorinator is a sodium hypochlorite system. A Pulsatron MP LMB2 chlorine feed pump will feed 12% concentration solution to a SAF-T-FLO EB-145 injection quill.
This chlorinator will add chlorine to the water from Well #1 (WS001).
This chlorinator is intended to provide secondary disinfection in the distribution system.
Untreated well water is pumped to the 125K Storage Tank (ST002) where it is then pumped and chlorinated into the distribution system.
The proposed sodium hypochlorite for disinfection meets the ANSI/NSF 60 standard.
The proposed design target dose of 2.0 mg/L or ppm (measured as free chlorine) is based on a typical flow of 185 gallons per minute (gpm) from the Pump Station (PF001). The expected
consumption is 0.95 lbs/day.
The chlorine dose will be adjusted by an automatic flow-paced control from water pumped by the Pump Station (PF001).
Operating Permit for Pump Station Upgrade (PF001), Hydropneumatic Tank Replacement (HD001), 125K Storage Tank Repair (ST002), Chlorinator Installation (TP001)
We have received the following information for Pump Station Upgrade (PF001), Hydropneumatic Tank Replacement (HD001), 125K Storage Tank Repair (ST002), Chlorinator Installation (TP001):
Satisfactory bacteriological results as evidence of proper disinfection and flushing.
Evidence of operation and maintenance manual delivery.
Photographic evidence of project completion.
We have determined that all conditions for issuing an operating permit have been met. On this basis, an Operating Permit for Pump Station Upgrade (PF001), Hydropneumatic Tank Replacement
(HD001), 125K Storage Tank Repair (ST002), and Chlorinator Installation (TP001) is hereby issued as constituted by this letter. You may now place the Pump Station (PF001), Hydropneumatic
Tank (HD001), 125K Storage Tank (ST002), and Chlorinator (TP001) in service in your water system.
Please maintain a copy of this letter with your permanent records for future reference.
Secondary Disinfection Requirements
Based on the water system’s bacteriological sample history, Rendezvous Beach is subject to
requirements to disinfect to secondary standards and provide continuous secondary disinfection of
the entire distribution system.
The Division shall be informed by telephone within 8 hours by a water supplier ofthe malfunction of any disinfection facility such that a detectable residual cannot be maintained at
all points in the distribution system per R309-105-18(1)(a).
Please be aware that, if any water source of the Rendezvous Beach water systemis found to require primary disinfection in the future per R309-200-5(7)(a)(i), additional regulations will
apply. This will include submitting disinfection CT information showing compliance with 4-log virus inactivation in accordance with the Ground Water Rule in R309-215-16.
Rendezvous Beachis required to demonstrate ongoing compliance with the secondary disinfection requirements found in Addendum 1 as long as the chlorinator (TP001)is in operation.The issuance
of this Operating Permit resolves your water system’s deficiencies related to fire hydrant pressure deficiency (D012) and secondary disinfection requirement (S001). An updated IPS report
isavailable at https://waterlink.utah.gov. Please contact Jennifer Yee at (385) 515-1501 or jyee@utah.gov for questions related to your water system’s IPS report or deficiencies.
If you have any questions regarding this Operating Permit, please contact Cameron Draney, P.E., of this office, at (385) 271-7039, or Michael Newberry, Permitting and Engineering Support
Manager, at (385) 515-1464.
Sincerely,
Russell Seeley, P.E.
Assistant Director
CLD/LT/mrn/mdbEnclosures – Addendum 1- Monitoring and Reporting Requirementscc:Ben Harker, Bear River Health Department, bharker@brhd.orgEric Dursteler, P.E., Forsgren Engineering,
edursteler@forsgren.comRichard Droesbeke, Rendezvous Beach, richarddroesbeke@utah.govCameron Draney, P.E., Division of Drinking Water, cdraney@utah.govLuke Treutel, Division of Drinking
Water, ltreutel@utah.govMark Berger, Division of Drinking Water, mberger@utah.govJennifer Yee, Division of Drinking Water, jyee@utah.govCDraney 17023 13346 OP Pump Station (PF001), Hydropneumatic
Tank (HD001), 125K Storage Tank (ST002), Chlorinator (TP001)
Addendum 1
Secondary Monitoring and Reporting Requirements
Chlorine Monitoring & Reporting Requirements
The water system is required to meet secondary disinfection requirements. As a part of these requirements, the water system is required to continuously maintain a minimum free chlorine
residual at each chlorinator Point of Entry (POE) into the system and demonstrate a detectable chlorine residual throughout the entire distribution system.
Secondary Disinfection Requirements and Reporting
Chlorine Residual ‒ Point of Entry (POE) to Distribution System
The POE sampling location is identified as EP001 in the Division’s database. A description of his location is needed. Maintain a minimum of 0.2 mg/L residual (measured as free chlorine)
at the POE sampling location. [R309-215-16(3)(b)(iii)(A)(I) and (II)]
The chlorine residual concentration measured at the POE sampling location shall not exceed the maximum residual disinfectant level (MRDL) of 4.0 mg/L (measured as free chlorine). [R309-200-5(3)(c)(iv)]
Record and report the lowest daily value of chlorine residual measured as free chlorine at the chlorinatorPOE sampling location (EP001). [R309-210- 8(3)(a)(ii)]
Our records show that your water system serves 200 people. Please be aware that R309-215-16(3)(b)(iii)(A)(II) requires water systems serving 3,300 people or fewer to monitor the POE
chlorine residuals and take daily grab sample(s). Alternatively, instead of taking daily grab samples, a groundwater system serving 3,300 or fewer people may choose to use an online
analyzer to continuously monitor the POE chlorine residuals entering the distribution system.
Chlorine Residual ‒ Distribution System (DS001)
This water system must maintain a detectable residualthroughout the distribution system. It is recommended to maintain the chlorine residual above 0.1 ppm in the distribution system.
[R309-520-5]
The chlorine residual measured in the distribution system shall not exceed the maximum residual disinfectant level (MRDL) of 4.0 mg/L (measured as free chlorine). [R309-200-5(3)(c)(iv)]
This water system must take a minimum of three (3) chlorine residual samples per weekat varying locations throughout its distribution system (DS001). [R309-105-10(1)(c)]
Distribution system chlorine residuals must be taken in conjunction with total coliform sampling. [R309-215-10(3)]
Disinfection Report Submission
To demonstrate ongoing compliance with secondary disinfection requirements, the water system must complete monthly operational reports for each active chlorinator using a template approved
by the Division.
Operational reports are submitted quarterly. The reports are due to the Division by the 10th day following the end of each reporting month or quarter (i.e., January 10th, April 10th,
July 10th, and October 10th for quarterly reports). The reports can be submitted by hardcopy, fax, or email at DDWReports@utah.gov. Please contact Luke Treutel at (385) 258-6084 or ltreutel@utah.gov
to schedule training regarding proper reporting.
In addition to monthly disinfection reporting, this water system must submit the monthly average of chlorine residual samples taken in the distribution system. Distribution system chlorine
residual monitoring results are due quarterly by the same compliance dates as the monthly disinfection report and can be submitted via an online form found at mrdl.utah.gov.
Records must be maintained for a minimum of 5 years. [R309-105-17(1)]