Format
A data frame with 30 observations on the following 5 variables.
Date.Collected
- a factor indicating the date of collection
Date
- a Date object indicating the date of collection
Well
- a factor indicating the well number
TCE.mg.per.L
- a numeric vector indicating the TCE concnetrations (mg/L)
Data.Qualifier
- a factor indicating the data qualifier
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.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.