Surface nitrate + nitrite (f.ig/L) Surface nitrate + nitrite (|.ig/L) 
400 
400 
300 
200 
100 
0 
Figure 3.2.14. Mean +1 SD surface nitrate + nitrite compared among (A) all, 
California, Oregon, and Washington sample locations, and (B) California 
NMS, California non-NMS, Olympic Coast NMS, and Washington-Oregon 
non-NMS sample locations. 
48 
