Document g7LJ3peY6pgGb7K2VQObO823

UST Inspection Report Prairie Knights Quik Mart Date of Report: Inspection Date & Time: Weather: Facility Owner: Facility Owner Address: Facility Address: Facility Phone: Facility Representative: EPA Facility ID Number: Reason for Inspection: Inspector(s): October 25, 2023 September 26, 2023, at 2:30 p.m. Central Daylight Time (CDT) Cloudy, ~ 65 degrees Fahrenheit Prairie Knights Casino - Standing Rock Sioux Tribe 7392 ND-24 Ft. Yates, North Dakota 58538 7392 ND-24 Ft. Yates, North Dakota 58538 3040011 Routine compliance inspection Marta Grabowski, EPA Andy Woodward, EPA UST System Description The Prairie Knights Quik Mart (Facility) is a Tribally-owned gas station and convenience store located on the Standing Rock Reservation in Fort Yates, North Dakota. The fuel at this Facility is sold to the public. The Environmental Protection Agency's Facility records indicate that the Facility has three, double-walled, jacketed steel underground storage tanks (UST) installed in May 2022. Tank 1 has a 15,000-gallon capacity and contains regular unleaded gasoline. Tank 2 has a 10,000-gallon capacity and contains premium unleaded gasoline. Tank 3 has an 8,000-gallon capacity and contains diesel fuel. Facility piping is pressurized, double-walled flex plastic. Inspection Narrative On September 26, 2023, the EPA UST program personnel conducted an inspection at Prairie Knights Quik Mart in Fort Yates, North Dakota. The EPA last inspected the Facility on November 4, 2020, and they selected it for routine re-inspection. Ms. Grabowski spoke with a Facility representative on September 11, 2023, to schedule the inspection. She also sent a follow-up email (see Attachment A). 3040011-Prairie Knights Quik Mart Page 1 of 3 9/26/2023 UST Inspection The EPA inspection team arrived at the Facility at 2:30 p.m. CDT. They were met by a Facility representative. Ms. Grabowski introduced herself and presented her inspector credentials. Ms. Grabowski filled out a Notice of Inspection (NOI) (see Attachment B) and she requested a signature. Ms. Grabowski explained that the NOI serves as documentation of consent for the EPA to conduct an inspection. In addition, she said that she would provide the NOI to the Facility at the end of the inspection. EPA inspectors conducted a physical inspection of the UST system as well as a review of Facility records. Photographs of UST system components taken during the inspection are in Attachment C. Copies of operation and maintenance records are in Attachment D. Tank Leak Detection Tank leak detection is conducted by sensors connected to a Franklin Fueling Systems EVO 550 automatic tank gauge (ATG). The sensors are designed to detect liquid in the tanks' interstitial space. Monthly sensor status records from five of the past 12 months were maintained onsite at the time of the inspection, and a sensor status history printed during the inspection contained all 12 months of passing records. The ATG console and in-tank probes are also setup to perform continuous statistical leak detection for each tank. Documentation of annual operability testing of the ATG system and sensors was not provided. Piping Leak Detection Piping leak detection is achieved by electronic automatic line leak detectors (ALLD) and interstitial monitoring. There are sensors located in each submersible turbine pump (STP) sump and under dispenser containment (UDC) sump, which are designed to detect any liquid that accumulates in the containment sumps. Documentation of annual operability testing for ALLDs and sump sensors was not provided. Cathodic Protection Cathodic protection (CP) is not required at the Facility since the tanks and piping are constructed with noncorrosive material. Periodic Testing/Inspection of Spill and Overfill Prevention Equipment The tanks were installed in May 2022, including new, double-walled spill buckets, and new drop tubes with overfill prevention valves. Triennial spill and overfill prevention equipment testing records were not provided. Periodic Operation & Maintenance (O&M) Walkthrough Inspections Records of monthly walkthrough inspections were provided for the past 12 months. Annual walkthrough requirements were last checked and documented on June 1, 2023. Operator Training Class A/B operator training certification was maintained at the Facility at the time of inspection. No Class C training documentation was provided. 3040011-Prairie Knights Quik Mart Page 2 of 3 9/26/2023 UST Inspection Financial Responsibility The Facility uses a private commercial insurance policy as its financial responsibility mechanism. The current policy expires on August 25, 2024. Physical Observations The inspection team viewed the spill buckets/fill pipes, one dispenser, submersible turbine pump (STP) sumps and ATG console. The spill buckets for Tank 1 contained approximately three inches of liquid. All other components appeared to be in good condition. Inspection Conclusions and Recommendations At the end of the inspection, Ms. Grabowski filled out an Onsite Deficiency Identification Form (see Attachment E), which represents the EPA staff's initial compliance recommendations at the time of the inspection. Prior to departing the Facility, Ms. Grabowski stated that a full inspection report would be forthcoming, which includes the inspection checklist (see Attachment F). Ms. Grabowski provided the Facility representative with the NOI form and the deficiency form and retained carbon copies of both forms for recordkeeping. Inspection Report Attachments A. Record of communication for scheduling the inspection B. Notice of Inspection C. Photo log D. Facility O&M Documents E. Onsite Deficiency Identification Form F. Inspection checklist Signature Lead Inspector MARTA GRABOWSKI Date: 2023.10.25 16:16:26 -06'00' Digitally signed by MARTA GRABOWSKI Marta Grabowski Date of signature 3040011-Prairie Knights Quik Mart Page 3 of 3 9/26/2023 UST Inspection