OHA Drinking Water Services
OR41
PWS ID: 05246 ---- PGE BEAVER GENERATING STATION
LRAAs and OELs

LRAA = Locational running annual average; OEL = Operational evaluation level. Learn about OELs here.
Averages are subject to change as new data is taken into consideration.

TTHM MCL = 0.080 mg/L,  HAA5 MCL = 0.060 mg/L.  MCL exceedances are indicated with red text.

Monitoring
Period		 Last
Sample		 Sample
Point		 Location TTHM
LRAA		 TTHM
OEL		 HAA5
LRAA		 HAA5
OEL
3Q2025 2DBP-01 GUARD SHACK 0.034 0.023
2Q2025 Jun 18, 2025 2DBP-01 GUARD SHACK 0.035 0.038 0.023 0.026
1Q2025 Mar 13, 2025 2DBP-01 GUARD SHACK 0.034 0.031 0.022 0.021
4Q2024 Dec 12, 2024 2DBP-01 GUARD SHACK 0.032 0.031 0.022 0.019
3Q2024 Sep 18, 2024 2DBP-01 GUARD SHACK 0.034 0.037 0.023 0.024
2Q2024 Jun 17, 2024 2DBP-01 GUARD SHACK 0.031 0.036 0.024 0.026
1Q2024 Mar 14, 2024 2DBP-01 GUARD SHACK 0.034 0.026 0.025 0.022
4Q2023 Dec 07, 2023 2DBP-01 GUARD SHACK 0.032 0.034 0.025 0.024
3Q2023 Sep 13, 2023 2DBP-01 GUARD SHACK 0.031 0.033 0.026 0.026
2Q2023 Jun 08, 2023 2DBP-01 GUARD SHACK 0.033 0.038 0.027 0.030
1Q2023 Mar 21, 2023 2DBP-01 GUARD SHACK 0.027 0.023 0.027 0.023
4Q2022 Dec 13, 2022 2DBP-01 GUARD SHACK 0.029 0.029 0.028 0.027
3Q2022 Sep 15, 2022 2DBP-01 GUARD SHACK 0.029 0.031 0.036 0.030
2Q2022 Jun 16, 2022 2DBP-01 GUARD SHACK 0.029 0.030 0.036 0.039
1Q2022 Mar 10, 2022 2DBP-01 GUARD SHACK 0.032 0.026 0.039 0.033
4Q2021 Dec 29, 2021 2DBP-01 GUARD SHACK 0.033 0.033 0.046 0.046
3Q2021 Jul 28, 2021 2DBP-01 GUARD SHACK 0.043 0.035 0.046 0.040
2Q2021 May 26, 2021 2DBP-01 GUARD SHACK 0.046 0.047 0.051 0.051
1Q2021 Feb 24, 2021 2DBP-01 GUARD SHACK 0.046 0.040 0.052 0.052
4Q2020 Oct 28, 2020 2DBP-01 GUARD SHACK 0.063 0.063 0.052 0.052



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