Metal exceedances represent the number of monthly mean concentrations that exceeded the prescribed limits for a given month, whereas pH exceedances represent the number of times that the monthly pH range was exceeded.
Les paramètres comprennent l’arsenic (As), le cuivre (Cu), le cyanure (CN), le plomb (Pb), le nickel (Ni), le zinc (Zn), le total des solides en suspension (TSS), le radium 226 total (Ra-226) et le pH.