EPA.89b.loglead.df:
Log-transformed Lead Concentrations from 1989 USEPA Guidance Document
Description
Log-transformed lead concentrations ($\mu$g/L) at two background and four
compliance wells (four monthly samples for each well).
Format
A data frame with 24 observations on the following 4 variables.
LogLead
- Natural logarithm of lead concentrations ($\mu$g/L)
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.5-11.