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EPA.09.Ex.7.1.arsenic.df: Arsenic concentrations from Example 7.1 of 2009 USEPA Guidance Document

Description

Arsenic concentrations (\(\mu\)g/L) at a single well, consisting of: 8 historical observations, 4 future observations for Case 1, and 4 future observations for Case 2.

Usage

EPA.09.Ex.7.1.arsenic.df

Arguments

Format

A data frame with 16 observations on the following 2 variables.

Data.Source

a factor with levels Historical, Case.1, Case.2

Arsenic.ug.per.l

a numeric vector of arsenic concentrations (\(\mu\)g/L)