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Region Site Units 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
NE Oregon Hermiston Municipal Airport ppb 28.8 26.1 23.8 21.9 21 19.7 19.3 19.9 21.9 23.5 25.7 28.1 30.9 34.2 37.1 40 41.9 43.4 44.5 44.9 45 44.5 43.3 39.7
Portland Metro Carus Spangler Road ppb 22.5 21.6 20.9 20 19.1 17.6 16.1 16 15.9 16.7 17.9 19.6 22.2 25.4 29 31.8 34.7 36.2 36.7 35.7 34.2 32.2 29.9 27.4
Portland Metro Portland SE Lafayette ppb 20 19.5 18.2 17.1 15.4 13.6 12.7 12.3 12.5 13.5 15.9 19.1 23.1 27.4 31.1 34.4 37.2 38.6 38.2 37.1 34.4 31.4 28.4 25.4
Portland Metro Sauvie Island ppb 12.5 10.3 8.3 6.6 5.4 4.9 5.5 7.2 9.4 11.7 14.9 18.8 23.1 27.2 30.6 32.1 33.7 34.9 34.6 33.1 31 28.5 25.9 24.9
Portland Metro Tualatin Bradbury Court ppb 20.3 19.2 18.6 17.4 15.9 14.4 13.1 12.8 12.8 14 16 19 22.2 25.4 28 29.6 30.9 31.5 30.3 28.5 26.9 24.6 22.6 20.9
SW Oregon Talent ppb 17.1 15.9 14.6 12.6 11.9 11.1 11.2 11.9 13.5 15.7 18.8 23 26.6 30.2 32.7 34.7 36.1 36.6 35.8 33.6 30.6 27.2 24.3 21.2
Willamette Valley Eugene Amazon Park ppb 19.1 16.6 14.1 12 10.2 9.5 8.3 7.8 8.6 10.3 12.7 15.6 18.8 21.8 24.8 27.3 28.2 27.6 26.2 24.2 21.6 18.3 15.1 11.6
Willamette Valley Eugene Saginaw ppb 13.2 10.7 8.6 6.5 4.8 3.8 3.6 3.5 4 5.6 8 11 14.5 17.7 20.7 23.6 26.1 27.1 26.3 24.7 22.3 19.7 16.8 13.6
Willamette Valley Salem State Hospital ppb 21.5 19.9 17.7 15.3 13.1 11.5 9.7 8.7 8.6 9.7 12 15.3 19 22.8 26.7 30 32.9 34.6 34 32 29.2 26.3 23.1 20