Benzene Concentrations from 1989 USEPA Guidance Document

Benzene concentrations (ppm) at one background and five compliance wells (four monthly samples for each well).

EPA.89b.benzene.df

Format

A data frame with 24 observations on the following 6 variables.

Benzene.orig

a character vector of the original observations

Benzene

a numeric vector with <1 observations coded as 1

Censored

a logical vector indicating which observations are censored

Month

a factor indicating the month of collection

Well

a factor indicating the well number

Well.type

a factor indicating the well type (background vs. compliance)

Source

USEPA. (1989b). Statistical Analysis of Ground-Water Monitoring Data at RCRA Facilities, Interim Final Guidance. EPA/530-SW-89-026. Office of Solid Waste, U.S. Environmental Protection Agency, Washington, D.C. p.5-18.