OHA Drinking Water Services
OR41
PWS ID: 95706 ---- NPS OREGON CAVES NATIONAL MONUMENT O&M
Single Chemical Schedule

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Facility
ID
Facility Name Analyte
Code
Analyte Sampling
Interval
Monitoring
Period
Start
Monitoring
Period
Due Date
Days
Until
Due
Samples
Required
Samples
Received
Last
Sample
Date
Seasonal Sampling
Period
EP-A EP FOR UNNAMED SPRINGS 1074 ANTIMONY, TOTAL Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1010 BARIUM Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1075 BERYLLIUM, TOTAL Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1015 CADMIUM Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1020 CHROMIUM Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1024 CYANIDE Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1025 FLUORIDE Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1035 MERCURY Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1036 NICKEL Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1045 SELENIUM Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1052 SODIUM Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025
EP-A EP FOR UNNAMED SPRINGS 1085 THALLIUM, TOTAL Yearly1/1/2026 - 12/31/2026 264 1 0 11/18/2025