Arsenic Concentrations from Example 11-1 of 2009 USEPA Guidance Document

Arsenic concentrations (ppb) at six wells (four observations per well).

EPA.09.Ex.11.1.arsenic.df

Format

A data frame with 24 observations on the following 3 variables.

Arsenic.ppb

a numeric vector of arsenic concentrations (ppb)

Month

a factor indicating the month of collection

Well

a factor indicating the well number

Source

USEPA. (2009). Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities, Unified Guidance. EPA 530/R-09-007, March 2009. Office of Resource Conservation and Recovery Program Implementation and Information Division. U.S. Environmental Protection Agency, Washington, D.C. p.11-3.

USEPA. (2010). Errata Sheet - March 2009 Unified Guidance. EPA 530/R-09-007a, August 9, 2010. Office of Resource Conservation and Recovery, Program Information and Implementation Division. U.S. Environmental Protection Agency, Washington, D.C.