Air Quality Monitoring

Phase 2 Year 4 dredging operations occurred between May 7 and November, 2014. Backfilling continued into December 2014. Monitoring was conducted daily for river and Processing Facility operations during the dredging season. Daily monitoring at the Processing Facility will continue until all sediment is transported off site.  For Phase 2 air quality data, click on the calendar below. Phase 1 data is available by clicking on the link at the bottom of the page. Phase 2 dredging operations will resume in spring 2015.

 

PollutantPerformance StandardMonitoring Frequency
PCBs (Residential Areas) 0.11 micrograms per cubic meter Continuous Monitoring
Daily (24-hour) basis
PCBs (Commercial/Industrial Areas) 0.26 micrograms per cubic meter Continuous Monitoring
Daily (24-hour) basis

Goal of the Standard

The goal of the air quality performance standard is to minimize the effects on people’s health and the environment from air emissions during the cleanup. Since PCBs are the primary pollutant in the sediment the performance standard, displayed at right, sets the limits for PCBs in the air.

How the Standard Works

  • Regular monitoring at multiple locations
  • Taking action to minimize air quality effects
  • Reporting and notification by the cleanup team to EPA

How the Air Monitoring Results are Recorded

Air monitoring is conducted at the Processing Facility and within River Locations where active dredging is occurring. There are multiple air monitors at the Processing Facility and within each of these River Locations. A result of "Typical" is reported when all monitors within the Processing Facility or River Locations have results that are under the standard. A result of "Exceedance" is reported when one or more of the individual monitors has a result exceeding the standard.

As of December 2, 2014:

  • Processing Facility - 99.36% of the results under the standard (Typical)
  • River Operations - 99.91% of the results under the standard (Typical)

 

Calendar (Please click on data for more information)

View Most Recent Data
«    December 2014    »
SundayMondayTuesdayWednesdayThursdayFridaySaturday
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Processing Facility: Typical
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Processing Facility: Typical
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Legend:

Typical Operations: All monitors with daily total PCB results under the standard.

Exceedance Level: One or more monitors with daily total PCB results exceeding standard.

 

View Phase 1 Monitoring