Particulates Data

Maximum daily CDF Contribution values and their associated monitoring/weather data.

During CDF dike construction July 2021–June 2024, CDF contribution to particulate emissions was not calculated and is not presented on this page. Monitors AM1 and AM2 were operational during construction. The daily mean values of the individual monitors are presented during this period.

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Date Range

Start

End

Air Monitors

AM1

AM2

Wind-Based Result

Upwind Monitor

Downwind Monitor

CDF Contribution

Action Level: 50 µg/m³

Download

Every record by year in comma-separated format (CSV)

About this Data

To learn more about how ambient air monitoring data is collected, see Real-Time Air Monitoring.

All exceedances of the site’s air monitoring action levels trigger a check of site conditions and an action, as appropriate, which are documented in a report. Please refer to the Actions Taken page for air monitoring action level exceedance reports.

Actual elevated particulate air monitoring data spikes are due to elevated levels of dust, which can be caused by vehicular or equipment traffic on the site unpaved roads, mowing activities, etc. Dredged materials are primarily submerged under water to control both particulate and volatile emissions. The particulate air monitoring equipment occasionally records false elevated data spikes which are typically caused by insects in the air monitoring equipment, fog or snow in the atmosphere, etc.

Action Levels Actions Taken

Monitor	CDF Point Monitored	Locations
M1	Northeast
M2	Southeast
M3	Southwest
M4	Northwest
AM1	Northeast (during dike construction)
AM2	Southeast (during dike construction)