Time series of trichloroethene (TCE) concentrations (mg/L) taken at 2 separate
wells. Some observations are annotated with a data qualifier of
J (estimated detected concentration).
A data frame with 30 observations on the following 5 variables.
a factor indicating the date of collection
a Date object indicating the date of collection
a factor indicating the well number
a numeric vector indicating the TCE concnetrations (mg/L)
a factor indicating the data qualifier
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.9-3.
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.
Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.