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HomeMy WebLinkAboutDDW-2024-011895 October 9, 2024 Julie Tanner East Grouse Creek Pipeline Co 11700 North 77220 West Box 74 Grouse Creek, Utah 84313 Subject:Operating Permit, Buckskin Tank Chlorinator (TP002); East Grouse Creek Pipeline Co, System #02010, File #12475, FSRF #3F1783 Dear Julie Tanner: The Division of Drinking Water (the Division) received a request for an Operating Permit for Buckskin Tank Chlorinator from your consultant, Eric Dursteler, P.E., with Forsgren Associates, Inc. on September 18, 2024. The Division issued Plan Approval for this project on November 8, 2021. Division staff, Hunter Payne, conducted an onsite construction inspection of this project on October 24, 2022. This project has met all conditions for receiving an operating permit. Our understanding of the project is the installation of a new gas chlorination facility in the vicinity of the system’s Primary Tank (ST001), also known as the Buckskin Tank. The project included installing a new gas chlorination system consisting of two (2) 150-pound chlorine gas cylinders on a dual-cylinder manual scale, a Regal Model 216 automatic switchover gas chlorinator, and a new chlorine solution feed line and injector assembly. The chlorinator was installed inside a new, prefabricated concrete shed equipped with a solar-electric power system for the chlorinator room heating, lighting, and ventilation. A new security fence was installed around the new chlorinator shed and the existing Primary Tank. The Buckskin Tank Chlorinator is identified as TP002 in the Division’s database. The Buckskin Tank Chlorinator (TP002) included in this project has been completed according to the following: The Buckskin Tank Chlorinator is a gas chlorinator intended to provide secondary disinfection. The Buckskin Tank Chlorinator treats water from the Buckskin Spring (WS001). The gaseous chlorine is added to the water within the new chlorination building. The chlorinated water then enters Primary Tank (ST001), also known as Buckskin Tank, and flows into the distribution system. The chlorine gas used for disinfection meets the ANSI/NSF 60 standard. A design target dose of 2.0 mg/L (ppm) of free chlorine is based on a typical flow of 42 gallons per minute (gpm) from Buckskin Spring. The chlorine dose is automatically adjusted by a Regal Series 7000 Smartvalve Gas Feed Regulator based on a flow from the spring. We have received the following information for Buckskin Tank Chlorinator (TP002): Certification of Rule Conformance with plan approval conditions by a professional engineer. Record drawings. Satisfactory bacteriological results as evidence of proper disinfection and flushing. Evidence of operation and maintenance manual delivery. We have determined that all conditions for issuing an operating permit have been met. On this basis, an Operating Permit for Buckskin Tank Chlorinatoris hereby issued as constituted by this letter. You may now place Buckskin Tank Chlorinator (TP002) in service in your water system. Please maintain a copy of this letter with your permanent records for future reference. Secondary Disinfection Requirements The East Grouse Creek Pipeline Company is required to demonstrate ongoing compliance with the secondary disinfection requirements outlined in Addendum 1 of this letter as long as the Buckskin Tank Chlorinator (TP002) is in operation. Monitoring and ReportingIssuance of this Operating Permit changes your water system’s monitoring and reporting requirements. The staff of the Compliance and Monitoring Section will follow up to provide an updated monitoring schedule to you. Please contact Mark Berger, Water Quality/Monitoring and Standards Manager at (801) 641-6457 for questions regarding the monitoring and reporting requirements for your water system. There may be new changes in monitoring and reporting requirements in the future as the Division continues to improve the disinfection monitoring and reporting practices. Failure to adhere to required monitoring and reporting will result in violations and the assessment of IPS points.The issuance of this Operating Permit resolves your water system’s TD25 deficiency “DISINFECTION IS REQUIRED BUT DISINFECTION IS INTERMITTENT OR NOT CONTINUOUS”. 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 Hunter Payne, of this office, at (385) 278-9837, or Michael Newberry, P.E., Permitting and Engineering Support Manager, at (385) 515-1464. Sincerely, Russell Seeley, P.E. Assistant Director HP/mrn/mdbcc:Ben Harker, Bear River Health Department, bharker@brhd.orgEric Dursteler, P.E., Forsgren Associates, Inc., edursteler@forsgren.comJulie Tanner, East Grouse Creek Pipeline Company, egrousecreekpipeline@gmail.comHunter Payne, Division of Drinking Water, hnpayne@utah.govHeather Pattee, Division of Drinking Water, hpattee@utah.govLuke Treutel, Division of Drinking Water, ltreutel@utah.gov Sitara Federico, Division of Drinking Water, sfederico@utah.govJennifer Yee, Division of Drinking Water, jyee@utah.govBrandi Smith, Division of Drinking Water, brandismith@utah.govColt Smith, Division of Drinking Water, acsmith@utah.govhpayne 02010 12475 OP TP002 (1) 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 in the distribution system.  Secondary Disinfection Requirements and Reporting  Chlorine Residual ‒ Point of Entry (POE) to Distribution System The POE sampling location is identified as EP002 in the Division’s database. This location has been identified as a private residence located at 11650 North 77200 West. 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 Buckskin Tank Chlorinator POE sampling location (EP002). [R309-210- 8(3)(a)(ii)] Our records show that your water system serves 70 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.  The monthly operational reports are submitted quarterly. The reports are due to the Division by the 10th day following the end of each reporting quarter (i.e., January 10th, April 10th, July 10th, and October 10th). The reports can be submitted by hardcopy, fax, or by uploading them to the Division’s chlorine residual reporting form which can be found at MRDL.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)]