EPA.09.Ex.17.4.copper.df: Copper Concentrations from Example 17-4 of 2009 USEPA...

Description Usage Format Source

Description

Copper concentrations (ppb) at three background and two compliance wells (eight monthly measures at the background wells, four monthly measures at the compliance wells).

Usage

1

Format

A data frame with 40 observations on the following 6 variables.

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)

Copper.ppb.orig

a character vector of original copper concentrations (ppb)

Copper.ppb

a numeric vector of copper concentrations with nondetects set to their detection limit

Censored

a logical vector indicating which observations are censored

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.17-21.

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.



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