OHA Drinking Water Services
OR41
PWS ID: 00922 ---- VERNONIA, CITY OF
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
3Q2014 Sep 16, 2014 2DBP-01 NEHALEM HWY 0.029 0.041
3Q2014 Sep 09, 2014 2DBP-02 KNOTT ST 0.017 0.019
2Q2014 Jun 16, 2014 2DBP-01 NEHALEM HWY 0.014 0.021
2Q2014 Jun 16, 2014 2DBP-02 KNOTT ST 0.012 0.019
1Q2014 Mar 05, 2014 2DBP-01 NEHALEM HWY 0.007
1Q2014 Mar 05, 2014 2DBP-02 KNOTT ST 0.006
4Q2013 Dec 17, 2013 2DBP-01 NEHALEM HWY 0.004
4Q2013 Dec 17, 2013 2DBP-02 KNOTT ST 0.003