USEPA Region 9 Laboratory Mercury Monitoring
Flow Diagram

The Region 9 Laboratory is a full service laboratory offering a wide variety of
analyses which can support the work of all the media divisions in Region 9. In the
area of mercury analysis, the laboratory offers both field and fixed lab analyses in
all matrices, including: water, soil, sediment, waste, biota, and air. The laboratory
also maintains field sample collection capability for all the matrices analyzed.
Atmospheric Mercury Vapor Monitoring
Tlie Region 9 Laboratory monitors atmospheric
mercury in the elemental, particulate and reactive
phases. Utilizing a mobile trailer platform, the
laboratory can provide continuous monitoring at
locations throughout the Region. The mobile analytical
capability includes: elemental gaseous mercury, reactive
gaseous mercury, particulate mercury, ozone, NOx,'
CO, and a complete meteorological station. The traileiV
is currently supporting TMDL projects in Arizona and \
California.
Mercury Analysis in Biota

mercury :rnin\ zer. This sy
success on fish and other bi
projects.ioeluanalyses for the Guadalupe _
WakrshfdTMDLrWand-sediment* •
Sulphur Bank Vk-rcurv Min^SW^J^oilsflpPn^e-l^i,
Altoona Mine atfe^&trd Qgl) from an NDEP/NDOW
study of mercury ii£n!h in Nevada .
i SSSjkda,'
Mercury Analysis in Other Matrices

ace Model 7500. Higher
are analyzed on a Leeman Model PS-200. Low
Clo mid level solid matrix samples are'analyzed on
i>iiie"Mi]estone DMA80. For screening of high
level soils, both in the lab and in the field, a
NITON Model 700 XRF is used.

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