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Data sets for: Variations on a method for evaluating decadal-scale changes in the groundwater quality of two GAMA coastal study units 2004-2014, California GAMA Priority Basin Project

Dates

Publication Date
Time Period
2004
Time Period
2005
Time Period
2014

Citation

Kent, R.H., 2018, Data sets for: Variations on a method for evaluating decadal-scale changes in the groundwater quality of two GAMA coastal study units 2004-2014, California GAMA Priority Basin Project: U.S. Geological Survey data release, https://doi.org/10.5066/F7GH9GF5.

Summary

The U.S. Geological Survey collected samples from 50 public supply wells during two distinct sampling episodes (2004-2005 and 2014) on the North-Central California coast. During each sampling episode, the samples were analyzed for 160 water-quality constituents, including water-quality indicators, nutrients, major and minor ions, trace elements, volatile organic compounds, and pesticide compounds. The paired-sample results were submitted to an evaluation method to determine whether or not step trends had occurred in the concentrations of each constituent. Quality-control samples were collected at a subset of the wells. The datasets presented here consist of a list and description of the 160 constituents, an Excel workbook which details [...]

Contacts

Point of Contact :
Robert H Kent
Originator :
Robert H Kent
Metadata Contact :
Robert H Kent
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
California Water Science Center

Attached Files

Click on title to download individual files attached to this item.

Table01.Constituents.xlsx 29.36 KB
Table02.DataProcessingExample.xlsx 27.53 KB
Table03_WaterQualityIndicators.xlsx 24.83 KB
Table04_Perchlorate_Nutrients.xlsx 18.88 KB
Table05_MajorIons.xlsx 24.29 KB
Table06_TraceElements.xlsx 31.31 KB
Table07VolatileOrganicCompounds.xlsx 15.81 KB
Table08_Pesticides.xlsx 14.26 KB
Table09Isotopes.xlsx 18.5 KB
Table10_BlankDetects.xlsx 15.91 KB
Table11_Replicates.xlsx 40.91 KB
Table12_SpikeRecoveries.xlsx 14.51 KB
Table13_QCsummary.xlsx 22.07 KB
Data_sets_for_Variations_on_a_method_for_evaluating_decadal-scale_changes_in_the_groundwater_quality_of_two_GAMA_coastal_study_units_2004-2014_California_GAMA_Priority_Basin_Project.xml
Original FGDC Metadata

View
198.12 KB
Table Explanations.Aug2018rev..docx 57.88 KB

Purpose

These data supplement the Scientific Investigations Report titled: "Variations on a method for evaluating decadal-scale changes in the groundwater quality of two GAMA coastal study units 2004-2014, California GAMA Priority Basin Project" by providing a table of constituents evaluated for that study, groundwater and quality-control sample results, as well as a table summarizing quality-control sample results and an Excel workbook demonstrating the step-trend evaluation method described in that report.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7GH9GF5

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