EnvStats (version 2.4.0)

EPA.09.Ex.18.1.arsenic.df: Arsenic Concentrations from Example 18-1 of 2009 USEPA Guidance Document

Description

Arsenic concentrations (ppb) in a single well at a solid waste landfill. Four observations per year over four years. Years 1-3 are the background period and Year 4 is the compliance period.

Usage

EPA.09.Ex.18.1.arsenic.df

Arguments

Format

A data frame with 16 observations on the following 3 variables.

Year

a factor indicating the year of collection

Sampling.Period

a factor indicating the sampling period (background vs. compliance)

Arsenic.ppb

a numeric vector of arsenic concentrations (ppb)