OHA Drinking Water Services
OR41
PWS ID: 00878 ---- TIGARD, CITY OF
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-I EP FOR ASR WELL 3 2981 1,1,1-TRICHLOROETHANE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2985 1,1,2-TRICHLOROETHANE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2977 1,1-DICHLOROETHYLENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2378 1,2,4-TRICHLOROBENZENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2980 1,2-DICHLOROETHANE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2983 1,2-DICHLOROPROPANE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2990 BENZENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2982 CARBON TETRACHLORIDE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2989 CHLOROBENZENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2380 CIS-1,2-DICHLOROETHYLENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2964 DICHLOROMETHANE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2992 ETHYLBENZENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2968 O-DICHLOROBENZENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2969 P-DICHLOROBENZENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2996 STYRENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2987 TETRACHLOROETHYLENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2991 TOLUENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2979 TRANS-1,2-DICHLOROETHYLENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2984 TRICHLOROETHYLENE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2976 VINYL CHLORIDE Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025
EP-I EP FOR ASR WELL 3 2955 XYLENES, TOTAL Yearly1/1/2026 - 12/31/2026 266 1 0 10/27/2025