Description

Arsenic, mercury, and strontium concentrations (mg/L) from a single well collected approximately quarterly. Nondetects are indicated by the data qualifier U.

Usage

Format

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

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.9-13.

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.