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. Author manuscript; available in PMC: 2018 Sep 19.
Published in final edited form as: Sci Total Environ. 2017 Feb 1;579:1649–1657. doi: 10.1016/j.scitotenv.2016.06.234

Table 1.

Summary statistics for USEPA Office of Water Criteria Continuous Concentrations (CCC).

Pb CCC Cr CCC Cu CCC Lo Cu CCC Hi
Mean 3.8 96 0.55 42
Std Dev 3.2 64 0.59 88
Min 0.29 15 0.019 1.3
Max 13 279 2.3 451

Location-specific CCCs in micrograms per liter, for lead (Pb), chromium (Cr) and copper (Cu) calculated for the 25 sampled sites. CCCs for Pb and Cr were calculated based on water hardness, and the CCC for Cu were calculated using biotic ligand model (BLM)-based software. Not all BLM parameters were measured. Substituting the range of allowable values for missing values in the BLM would result in CCC between CCC Lo and CCC Hi.