samples: Water-Quality Samples

In mlms: Multilevel Monitoring System Data for Wells in the USGS INL Aquifer Monitoring Network

Water-Quality Samples

Description

Depth-discrete chemical and physical data for groundwater collected from Multilevel Monitoring System (MLMS) wells in the U.S. Geological Survey (USGS) aquifer-monitoring network, Idaho National Laboratory (INL), Idaho.

Usage

samples

Format

A data frame with the following variables:

site_nm

Local site name for a MLMS well.

port_nu

Identifier for the valved measurement port.

site_no

USGS site identification number for a MLMS measurement port.

stime_dt

Start time for the pressure profiling event.

sample_dt

Date and time the water-quality sample was collected, in "America/Denver" time zone. Missing values of time were substituted with "12:00".

parm_short_nm

Parameter short name assigned by the USGS, such as "pH"; followed by 'wu' water, unfiltered or 'wf' water, filtered.

unit_cd

Units of measurement.

pcode

USGS 5-digit parameter code. For example, the parameter code for Tritium is "07000".

remark_cd

Remark code (result level) used to qualify the parameter value. The codes and their meanings are as follows: NA (missing value) is a quantified value; "<" is where the actual value is known to be less than the value reported, that is, the measured concentration is below the reporting limit (RL) and represented as a censored (or nondetection) value. For censored values, the value reported is the RL; and "E" is an estimated value, that is, the actual value is greater than the minimum detection limit (MDL) and less than the laboratory reporting level (LRL).

result_va

Parameter value.

lab_li_va

Lower confidence interval of the result value based on laboratory analysis.

lab_ui_va

Upper confidence interval of the result value based on laboratory analysis.

dqi_cd

Data quality indicator code that indicates the review status of a result. The codes and their meanings are as follows: "R" reviewed and accepted, and "S" provisional (presumed satisfactory).

sample_type_cd

Sample type code that identifies the quality-assurance (QA) type of a sample. The codes and their meanings are as follows: "2" is a blank sample; "7" is a replicate sample taken from the environment; and "9" is a regular sample taken from the environment.

Source

Sample data retrieved from the inldata package using the get_samples function.

Examples

str(samples)

mlms documentation built on April 4, 2025, 4:43 a.m.