DDW-2024-012976

70 Westview Drive - Richfield, Utah 84701 Phone [phone] XT 314 [e-mail]

State of Utah

SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor
Department of
Environmental Quality
Kimberly D. Shelley Executive Director CENTRAL UTAH DISTRICT John L. Chartier, P.E. District Engineer

October 24, 2024
Troy Robinson
Circleville Water Operator P.O. Box 69 Circleville, UT 84723
Dear Troy Robinson: Subject: RTCR Level 2 Assessment for Circleville Town, Utah#16002 Thank you for taking the time to meet with me on October 24, 2024, to conduct the Level 2 Assessment (L2) of your water system. The L2 was required due to Circleville Town having two level 1 assessments within a 12-month period. Those two assessments occurred in June 2024 and August 2024. Observations:
The Town of Circleville has been working on a water improvement project this summer and some of that work included connecting new pipes into the existing distribution lines below the Town’s storage tanks. It is assumed the contamination of the water system could have come from that work. To the best of the water operator’s
knowledge, the contractor did disinfect the pipelines as required by the project specifications. However, any contaminants that may have been introduced into the distribution system from that work could have spread throughout the entire distribution system since Circleville Town does not chlorinate their water.
The operator’s inspection of the sources and storage tanks, which includes 2 springs, 1 well and 2 concrete tanks, did not reveal any obvious signs of where contamination could have occurred. The triggered source samples taken for the 2 springs were taken at a location below the storage tanks at the first connection on the system. Subsequent investigative samples taken directly from each spring were negative for total coliform. Conclusion: The construction work being done on the system is assumed to be the source of the contamination.

Page 2
Recommendations:
1. Take future combined spring source samples (sampling station SS935) above the storage tanks. 2. Update your bacteriological sampling site plan to identify the triggered source sample locations.
3. Adhere to sanitary sampling protocols, ensuring adequate flushing and disinfection of the sample site using a strong chlorine-based solution. This should include applying the solution, allowing sufficient contact time, flushing the site and then collecting the sample.
Please contact me at [phone] or [e-mail] if you have any further questions. Sincerely,
John L. Chartier, P.E. Department of Environmental Quality Central District Engineer
Cc: Troy Robinson, Circleville Town, [e-mail] Mekeisia Westwood, Circleville Town, [e-mail] Brian Pattee, Division of Drinking Water, [e-mail]
Sitara Federico, Division of Drinking Water, [e-mail] Tammie Allen, Division of Drinking Water, [e-mail]
Eric Larsen, Central Utah Public Health Department, [e-mail]