Proficiency Testing Results

Billings Certifications

• Alaska Certification 2022-2023
• Colorado Certification 2017-2018
• Florida NELAC Certification 2017 – 2018
• Idaho Certificate 2017
• Louisiana Certifications 2017 – 2018
• Montana Certification 2017-2018
• Nebraska Certifications 2017-2018
• Nevada Certifications 2022-2023
• North Dakota Certifications 2017 – 2018
• South Dakota Certifications 2017
• Texas Certification 2017-2018
• USEPA Region VIII Certification 2016
• Radon Certification 2016-2018
• USDA Soil Permit 2017-2020

Helena Certifications

• Montana Drinking Water Certification 2020
• USEPA Region VIII Drinking Water Certification 2016
• Helena USDA Soil Permit

Gillette Certifications

• •USEPA Region VIII Drinking Water Certification 2023-2026

• Drinking Water PT Results
  WS-296 Results, WS-302 Results, WS-308 Results
  
• Waste Water, DMRQA, and NPDES PT Results
  WP-318 Results, WP-324 DMRQA Results, WP-331 Results, WP-336 DMRQA Results
  
• Soil and Underground Storage Tank PT Results
  Soil-115 Results, Soil-117 Results, Soil-119 Results, Soil-121 Results
  
• Agriculture and Mining Overburden PT Results
  2022 NAPT Soil Program 1st Quarter, 2022 NAPT Soil Program 3rd Quarter
  

• Drinking Water PT Results
  WS18-4 Results, WS19-2 Results, WS19-4 Results
• Waste Water, DMRQA, and NPDES PT Results
  WP18-3B Results, WP19-1 DMRQA Results, WP19-3B Results
• Agriculture and Mining Overburden PT Results
  2018 NAPT Soil Program 3rd Quarter, 2019 NAPT Soil Program 1st Quarter
• UST Program
  LPTP18-S3 Results, LPTP19-S1 Results, LPTP19-S3 Results

  
  

• • Drinking Water PT Results
    WS-306 Results, WS-312 Results, WS-318 Results
  • Waste Water, DMRQA, and NPDES PT Results
    WP-324 Results, WP-330 Results, WP-336 Results
  • Soil and Underground Storage Tanks PT Results
    SOIL-119 Results, SOIL-121 Results, SOIL-123 Results
  • Radiochemistry PT Results
    RAD MAPEP Series 46 Results, RAD MAPEP Series 47 Results, RAD MAPEP Series 48 Results, RAD-128 Results, RAD-130 Results, RAD-132 Results

• Drinking Water PT Results
  WS-314 Results, WS-320 Results, WS-326 Results
• Waste Water, DMRQA, and NPDES PT Results
  WP-330 Results, WP-336 Results, WP-342 Results
• Soil and Underground Storage Tanks PT Results
  R31709 Results, R34382 Results, R35038 Results, SOIL-119 Results, SOIL-121 Results,
  SOIL-123 Results, LPTP23-S2 Results

EPA Method 537.1

Isotope Dilution LC-MS/MS