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HomeMy WebLinkAboutDDW-2024-007722March 11,2024 Jim Smith Wasatch Wing &Clay PO BOX 289, Cedar Valley,Utah 84013 Dear Mr.Smith, Subject:RTCR Level 2 Assessment Wasatch Wing &Clay UTAH25180 I would like to thank Woody,Nick (Biz),and Eli for taking the time to meet with Brian Pattee DDW,Pete Keers DDW,and myself on March 6th,2024,for a Level 2 Assessment (L2)of your water system.Your willingness to accommodate this request is greatly appreciated. Observations: This L2 assessment was triggered by multiple Routine and Repeat TC+EC-samples in the distribution system,January 2024 and in conjunction with a previous L2 assessment triggered in November of 2023. Wasatch Wing &Clay is a Transient Non-Community water system located in Utah County. The system consists of a Well (WS001)and a 25,000-gallon Wet Well Tank (PF001).Wet well supplies a Fire suppression pump system for the Lodge building.Culinary system is a pump pulling water out of wet well into hydropneumatic tanks and then into the distribution system to supply Clubhouse,Bird cleaning shed,landscape irrigation,and multiple frost-free hydrants for animal watering. While performing this L2 assessment it was noticed the check valve had been removed on the main line supplying water from the well to the wet well tank.This line is designed to be removed during non-use freezing conditions.The distribution system does remain pressurized when the well supply is not in use. At the time of this assessment,the system has been working to make some necessary repairs to the system.Caps have been ordered to cover the ends of the pipe to keep them protected when they are disconnected.The system has replaced a threaded hose bib with a smooth-nose sample tap at the well head to ensure a sanitary sample can be collected from that source. 195 North 1950 West •Salt Lake City,UT Mailing Address:P.O.Box 144830 •Salt Lake City,UT 84114-4830 Telephone (801) 536-4200 •Fax (801)536-4211 •T.D.D.(801)536-4414 www.deq.utah.gov Printed on 100%recycled paper Jim Smith Page 2 March 11,2024 Conclusions: 1.TC +samples were likely caused by stagnant water/old water age in both your storage tank and your distribution system.The storage tank does not have an access opening and would be hard to clean dirt and silt out of. 2.Another potential cause could be your Hydropneumatic Tanks harboring silt and dirt which have historically been a problem with water systems. 3.Another possible factor contributing to the TC+samples could be the presence of biofilm buildup in your reservoir and distribution system.Upon inspection,it was observed that the well head check valve contained an orange,rust-like substance,indicative of biofilm formation.Biofilm is known to be a potential trigger for Total Coliform positive (TC+) samples. Recommendations: 1.It is recommended to separate the drinking water system from the lawn irrigation,bird pen water,and fire suppression system.One option is to install a plastic water tank inside the existing building to supply water to the clubhouse and bird cleaning station.This setup would significantly improve the ease of cleaning and maintenance compared to the current drinking water system.(DDW permitting approval required to add tank) 2.Clean Storage Tank ST001 on a regular basis,Disinfect as per AWWA C651 standards as an O&M procedure. 3.Collect water samples when possible after the system has experienced heavy use,such as during a large shoot or event with high water volume usage.The clubhouse's water supply is sourced from a lengthy 2-inch line,which increases the likelihood of water stagnation. 4.When removing temporary hose piping from well to tank store hoses in a sanitary location, cap ends of pipe and disinfect after reinstalling. 5.It is advisable to collect samples from the South Wall tap of the bird cleaning station.This tap is significantly closer to the water tank and wellhead,ensuring that the water is less stagnant in the line.Sampling from this location allows you to collect water directly from the tank,rather than stagnant water that may be sitting in the line running to the clubhouse. 6.Bacteriological Samples:Follow sanitary sampling protocol of sufficient flushing and disinfection,using a strong chlorine-based solution (applying,allowing contact time, flushing,sample collection). Jim Smith Page 3 March 11,2024 7.Inspect the well head building for any openings where pipes or cables enter the structure. We recommend using steel wool and insulating foam to effectively reduce or eliminate the risk of rodents entering the structures. 8.Disinfect and flush Hydropneumatic Tanks on a regular basis,Disinfect as per AWWA C651 standards as an O&M procedure. For engineering questions and review,contact Michael Newberry at (385)515-1464, mnewberry@utah.gov. Feel free to contact me Tom McOmie at (385)552-4446 or tmcomie@utah.gov,with questions or if we can be of further assistance. If you have any questions regarding the work performed,please contact Field Services Section manager,Ryan Dearing,at rdearing@utah.gov (801)419-6785. Sincerely, Tom McOmie Environmental Scientist Utah Division of Drinking Water cc: Tom McOmie,Division of Drinking Water,tmcomie@utah.gov Sitara Federico,Division of Drinking Water,sfederico@utah.gov Chris Martin,DDW Engineer,cmartin@utah.gov Brent Arns,DDW Engineer,barns@utah.gov Daymon Swenson,Utah County Health Department,daymons@utahcounty.gov