Document EqkQDwzNK4XJy6rzEzjxwp5zb

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 10 1200 Sixth Avenue, Suite 155 Seattle, WA 98101 WATER DIVISION February 9, 2023 Mr. Chico Holliday Warm Springs Tribes P.O. Box 1196 Warm Springs, OR 97761 Re: Violations for Failure to Monitor and Report Sidwalter, PWS ID 104101101 Dear Mr. Holliday: The EPA did not receive sample results for the regulated drinking water contaminants in the table below as required under the National Primary Drinking Water Regulations (NPDWR). As a result, Sidwalter is in violation of the NPDWRs. Violation Monitoring and Reporting Monitoring and Reporting Monitoring and Reporting Monitoring and Reporting Compliance Period 1/1/2020-12/31/2022 1/1/2022-12/31/2022 1/1/2020-12/31/2022 1/1/2020-12/31/2022 Analyte IOC Nitrate SOC VOC Citation 40 CFR 141.23 40 CFR 141.23 40 CFR 141.24 40 CFR 141.24 To return to compliance you must either: 1. Submit sample results if a sample was collected during the monitoring period. OR 1. Collect samples according to your current monitoring schedule and submit the results to EPA. 2. Notify customers of this violation within one year in your Consumer Confidence Report (CCR). This letter serves as initial notification of non-compliance under the Safe Drinking Water Act for the regulation and time period cited. EPA supports compliance assistance and encourages early action to return to compliance. Issues not addressed in a timely manner may be referred to enforcement. Prior to an enforcement action for the cited violation(s), EPA Region 10 will offer government-to-government consultation, in accordance with the EPA Policy on Consultation and Coordination with Indian Tribes. Please contact the Groundwater and Drinking Water Section at (206) 553-6253 or R10TribalDW@epa.gov to determine next steps or if you have questions. Sincerely, KAREN BURGESS Digitally signed by KAREN BURGESS Date: 2023.02.09 21:20:50 -08'00' Karen Burgess, Manager Groundwater and Drinking Water Section cc: Laddie Folster, IHS Spokane District Office