Document xjZKrxXw4nZM3K5zbpD2QMNvm

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595 Wynkoop Street Denver, CO 80202-1129 Phone 800-227-8917 www.epa.gov/region8 Ref: 8WD-SDB January 19, 2024 SENT VIA EMAIL Ms. Andrea Summers, Environmental Analyst Bridger Coal Company-Admin P.O. Box 68 (932 Nine Mile Rd.) Point of Rocks, Wyoming 82942 Andrea.Summers@Pacificorp.com Re: Notice of Noncompliance Disinfectants and Disinfection Byproducts Rule (D/DBPR) Failure to Monitor Disinfection Byproducts PWS ID# WY5601634 NTNC Dear Ms. Summers: The purpose of this letter is to inform you that your public water supply system has failed to conduct required monitoring for the DBPR. Your water system is required to monitor for disinfection byproducts (DBPs) by taking a set of Total Trihalomethane (TTHM) and Haloacetic Acids (five) (HAA5) samples in the distribution system every 90 days according to your approved Stage 2 Monitoring Plan. The U.S. Environmental Protection Agency (EPA) did not receive any acceptable TTHM/HAA5 sampling results for the 4th quarter of the year 2024 collected during the month of November. This is a violation of 40 C.F.R. 141.621 and 141.134 of the National Primary Drinking Water Regulations (NPDWR). It is acknowledged that the system collected TTHM/HAA5 samples on November 1, 2023. Under the Disinfection Byproduct monitoring requirements, 40 C.F.R. 141.132(a)(1) states, "Systems must take all samples during normal operating conditions." Unfortunately, this sample was collected after the chlorination practices were halted for 2 weeks. After the DBP samples were collected, chlorination practices resumed for a few days prior to the collection of the November RTCR sample. Thus, the TTHM/HAA5 samples were not collected in accordance with 40 C.F.R. 141.132(a)(1) and unacceptable for compliance. If not already done, please take the following actions: 1. Notify your customers of this violation within one year after you learn of the violation. The public notice (PN) must be delivered through either posting in conspicuous locations for at least 10 days, by hand delivery, or by mail. Enclosed is a copy of the Tier 3 PN form that contains the mandatory language you are required to use. You may use the EPA Microsoft Word templates available at https://www.epa.gov/region8waterops/reporting-forms-drinking-water-systems-wyoming-and-tribal-lands-epa-region-8#pn. 2. Provide our office with a copy of your public notice and certification within 10 days of completion. 3. Collect all required TTHM/HAA5 samples at approved sampling location(s) during each required sampling period and submit the results to the EPA within 10 days following the end of each calendar quarter. Please send the PN and sampling results to our office using one of the methods listed below. Include your PWS name and PWS ID # on all correspondence. Email: R8DWU@epa.gov Fax: 1-877-876-9101 Mail: Refer to the address at the top of this letter. Please use Mail Code 8WD-SDB on the envelope. You should be aware that repeated violations of the NPDWR may result in formal enforcement action taken against your water system. If formal enforcement action were to be necessary, the Safe Drinking Water Act provides for civil penalties of up to $67,544 per day of violation. We prefer to resolve problems before such formal enforcement is necessary, and we ask your cooperation to rectify problems quickly and effectively. If you have any questions, please contact Seth Tourney, DBP Rule Manager, at (303) 312-6579 or by email at tourney.seth@epa.gov. Sincerely, JUDY BLOOM Digitally signed by JUDY BLOOM Date: 2024.01.19 00:00:50 -07'00' Judy Bloom Supervisor, Drinking Water Section B Water Division Enclosure Tier 3 PN Template cc: Mr. Jon Brown General Manager Bridger Coal Company - Admin jon.brown2@pacificorp.com Ms. Amber George Designated Operator Bridger Coal Company amber.wolfgeorge@pacificorp.com Kodee Vining Contact-Alt. Ac Bridger Coal-Admin kodee.vining@pacificorp.com IMPORTANT INFORMATION ABOUT YOUR DRINKING WATER Monitoring Requirements Not Met for __________________________ (Public Water System Name) Our water system violated several drinking water regulations over the compliance period shown below. Even though these were not emergencies, as our customers, you have a right to know what happened and what we did to correct these situations. We are required to monitor your drinking water for specific contaminants on a regular basis. Results of regular monitoring are indicators of whether or not your drinking water meets health standards. During _________________________, we did not monitor for _____________________________________, (compliance period) (contaminant(s)) and therefore cannot be sure of the quality of your drinking water during that time. What should I do? There is nothing you need to do at this time. The table below lists the contaminant(s) we did not properly test for during the compliance period, how often we are supposed to sample and how many samples we are supposed to take, how many samples we took, when samples should have been taken, and the date on which follow-up samples were taken. Contaminant Required sampling frequency Number of samples taken When samples should have been taken When samples were taken What happened? What is being done? (describe corrective action.) For more information, please contact ____________________________ at _________________ (name of contact) (phone number) or _______________________________________________. Please share this information (mailing address) with all the other people who drink this water, especially those who may not have received this notice directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hands or mail. This notice is being sent to you by __________________________________________. (system) Public Water System ID#: ___________________. Date distributed: _________________. ATTENTION: PWS Operator/Responsible Party For monitoring violations, you must provide public notice to persons served within one year after you learn of the violation (141.204(b)). Community systems must use one of the following methods of delivery (141.204(c)): Hand or direct delivery Mail, as a separate notice or included with the bill Non-community systems must use one of the following methods of delivery (141.204(c)): Posting in conspicuous locations Hand delivery Mail In addition, both community and non-community systems must use another method reasonably calculated to reach others if they would not be reached by the first method (141.204(c)). Such methods could include newspapers, email, or delivery to community organizations. If you post the notice, it must remain posted until the violation is resolved. If the violation has been resolved, you must post the notice for at least one week (141.204(b)). If you mail, post, or hand deliver, print your notice on letterhead, if available. Corrective Actions In your notice, describe corrective actions you took or are taking. This could include information stating that you have since taken or are in the process of taking the required samples. After Issuing the Notice Within ten days after issuing the notice, you must send to EPA a copy of each type of notice, along with a certification (see example below) that you have met all the public notice requirements. Mail copies to: US EPA REGION 8 PUBLIC WATER SYSTEM PROGRAM - 8WD-SDB 1595 Wynkoop Street DENVER CO 80202-1129 Or, you can fax a copy toll-free to 1-(877) 876-9101. Certification of Public Notification I certify that the attached public notification was issued (PWS Operator/Responsible Party) from _____________________________ to . (Date) (Date) The attached notice was issued by _______________________________________________. (Method of delivery) Signature Date ______________________