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Field portable X-ray fluorescence and associated quality-control data for paint chips sampled from selected sites in Lakeport, Lake County, California

Dates

Publication Date
Start Date
2022-07-11
End Date
2022-07-12

Citation

Levy, Z.F., Goldrath, D.A., and Alpers, C.N., 2023, Environmental chemistry from selected sites in Lakeport, Lake County, California (version 1.1, August 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P995OFF4.

Summary

This data -release component documents field portable X-ray fluorescence (pXRF) measurements of lead and associated quality-control data for 19 samples of paint chips collected from structures suspected to have legacy coatings of lead-based paint in Lakeport (Lake County, California) during July 11-12, 2022. Environmental samples were collected at selected sites to assess the effects of lead-based paint on soil chemistry. This sampling was made as part of a broader study to attribute sources of lead in soils in cooperation with the California Department of Toxic Substances Control (DTSC) for their Lead-Acid Battery Recycling Facility Investigation and Cleanup (LABRIC) program. Lead concentrations for paint chips measured by pXRF were [...]

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Lakeport_pXRF_QC.txt 1,017 Bytes text/plain
Lakeport_paint.txt 4.66 KB text/plain

Purpose

These data were collected to characterize lead and other elements diagnostic of lead sources in soils potentially affected by weathering of lead-based paint from proximal structures. Apparent concentrations of lead in layered paint chips measured by pXRF are not representative of the concentration of lead for individual paint layers, as the density and thickness of different paint layers can influence the aggregate measurement value. The pXRF data for lead concentrations in sampled paint chips are intended for qualitative screening purposes only. This investigation is part of a broader cooperative study between USGS and DTSC to identify geochemical characteristics of soils affected by lead from battery recycling facilities across California. Results are intended to be used to develop a reliable methodology for attribution of sources of lead in soils across California and not for regulatory compliance monitoring or associated activities.

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  • USGS California Water Science Center

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