EPA.09.Table.9.3.df | R Documentation |
Arsenic, mercury, and strontium concentrations (mg/L) from a single well
collected approximately quarterly. Nondetects are indicated by the
data qualifier U
.
EPA.09.Table.9.3.df
A data frame with 15 observations on the following 8 variables.
Date.Collected
a factor indicating the date of collection
Date
a Date object indicating the date of collection
Arsenic.mg.per.L
a numeric vector of arsenic concentrations (mg/L)
Arsenic.Data.Qualifier
a factor indicating the data qualifier for arsenic
Mercury.mg.per.L
a numeric vector of mercury concentrations (mg/L)
Mercury.Data.Qualifier
a factor indicating the data qualifier for mercury
Strontium.mg.per.L
a numeric vector of strontium concentrations
Strontium.Data.Qualifier
a factor indicating the data qualifier for strontium
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.9-13.
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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