Table 18.1--Acid Neutralizing Capacity (ANC) categories for brook trout response
\xce\xbceq/L | Classification | Biological response |
> 50 | "not acidic" | reproducing brook trout populations expected where habitat is suitable |
20 - 50 | "transitional" | extremely sensitive to acidification; brook trout response variable |
0 - 20 | "episodically acidic" | sub-lethal and/or lethal effects on brook trout likely |
< 0 | "chronically acidic" | lethal effects on brook trout likely |



