EPA.92c.zinc.df:
Zinc Concentrations from 1992 USEPA Guidance Document
Description
Zinc concentrations (ppb) at five background wells
(eight samples for each well). Nondetects reported as <7< code="">.
7<>
Format
A data frame with 40 observations on the following 5 variables.
Zinc.orig
- a character vector of original zinc concentrations (ppb)
Zinc
- a numeric vector of zinc concentrations with
<7< code=""> coded as 7
7<>
Censored
- a logical vector indicating which observations are censored
Sample
- a factor indicating the sample number
Well
- a factor indicating the well number
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.30.