EPA.92c.arsenic2.df: Arsenic Concentrations from 1992 USEPA Guidance Document

EPA.92c.arsenic2.dfR Documentation

Arsenic Concentrations from 1992 USEPA Guidance Document

Description

Arsenic concentrations (ppb) at three background wells and one compliance well (six monthly samples for each well; first four missing at compliance well). Nondetects reported as <5.

Usage

EPA.92c.arsenic2.df

Format

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

Arsenic.orig

a character vector of original arsenic concentrations (ppb)

Arsenic

a numeric vector of arsenic concentrations with <5 coded as 5

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. (1992c). Statistical Analysis of Ground-Water Monitoring Data at RCRA Facilities: Addendum to Interim Final Guidance. Office of Solid Waste, U.S. Environmental Protection Agency, Washington, D.C. p.60.


EnvStats documentation built on Aug. 22, 2023, 5:09 p.m.