We are in the process of ensuring this document is accessible to all audiences. If you
need assistance accessing this document, or any material on the EPA East Palestine,
Ohio emergency response web pages, please contact the Region 5 Public Information
Officer on-call at: R5_EastPalestine@epa.gov
Table 1
Work Area Continuous Air Monitoring Results
East Palestine Derailment Site
East Palestine, Columbiana County, Ohio
Monitoring Period: 05/30/2023 00:00 through 05/31/2023 09:39
Air Monitoring
Instrument:
Serial Number
Analyte
Screening Level1
Screening Level
Exceeded?
8-hour Period
Concentration Range
Average of All
8-hour Periods
8533230602
PM2 5 (mg/m3)
0.035 (mg/m3)
Yes2
0.035 to 0.048
0.041
PM10 (mg/m3)
0.070 (mg/m3)
Yes'
0.052 to 0.080
0.065
8533230604
PM2 5 (mg/m3)
0.035 (mg/m3)
Yes2
0.027 to 0.042
0.035
PM10 (mg/m3)
0.070 (mg/m3)
No
0.036 to 0.053
0.044
8533183117
PM2 5 (mg/m3)
0.035 (mg/m3)
Yes2
0.025 to 0.037
0.031
PM10 (mg/m3)
0.070 (mg/m3)
No
0.032 to 0.049
0.039
8533213308
PM2 5 (mg/m3)
0.035 (mg/m3)
Yes2
0.027 to 0.040
0.034
PM10 (mg/m3)
0.070 (mg/m3)
No
0.033 to 0.052
0.043
8533183902
PM2 5 (mg/m3)
0.035 (mg/m3)
No
0.004 to 0.011
0.007
PM10 (mg/m3)
0.070 (mg/m3)
No
0.004 to 0.012
0.008
8533153004
PM2 5 (mg/m3)
0.035 (mg/m3)
No
0.008 to 0.012
0.01
PM10 (mg/m3)
0.070 (mg/m3)
No
0.010 to 0.016
0.013
8533230702
PM2 5 (mg/m3)
0.035 (mg/m3)
Yes2
0.027 to 0.047
0.032
PM10 (mg/m3)
0.070 (mg/m3)
No
0.029 to 0.050
0.034
W01A00000611
VOC (ppm)
0.5 (ppm)
No
0.00 to 0.00
0.00
LEL (%)
>5%
No
0.00 to 0.00
0.00
W01A00002176
VOC (ppm)
0.5 (ppm)
No
0.00 to 0.01
0.00
W01A00002178
VOC (ppm)
0.5 (ppm)
No
0.00 to 0.00
0.00
W01A00002184
VOC (ppm)
0.5 (ppm)
No
0.00 to 0.00
0.00
W01B00002178
VOC (ppm)
0.5 (ppm)
No
0.00 to 0.00
0.00
LEL (%)
>5%
No
0.00 to 0.72
0.18
W01B00002207
VOC (ppm)
0.5 (ppm)
No
0.00 to 0.00
0.00
LEL (%)
>5%
No
0.00 to 0.58
0.03
Notes:
1 Site-Specific Screening Levels stated in the Tetra Tech Air Monitoring and Sampling Plan. Screening levels were modified on March
16, 2023 to reflect updated operation procedures on when to apply mitigation methods to reduce dust. Action levels set by health
departments have not changed.
2 Vehicle traffic observed during monitoring period near monitoring instrument.
Air monitoring measurements have been averaged over a 8-hour time period and summarized above.
Air monitoring is not performed during inclement weather conditions/rain and thunderstorms.
Abbreviations:
> - Greater than
% - Percent
LEL - Lower Explosive Limit
mg/m3 - milligrams per meter cubed
PM2 5 - Particulate Matter, diameter 2.5 micrometers and smaller
PM10 - Particulate Matter, diameter 10 micrometers and smaller
ppm - Parts per million
S/N - Serial number
VOC - Volatile organic compound
We are in the process of ensuring this document is accessible to all audiences. If you need assistance accessing this document, or any
materials on the EPA East Palestine. Ohio emergency response webpages. please contact the Region 5 Public Information Officer on-call
-------
@WMl)O022O9
, 8533230702
{ jMIH
W01B00002207
8533230604 i
¦W0TAQ.Q.0006M
8533183902
W01A00002176
8533230602
W01A00002178
*8533153004'
W01A00002184
W01B00002178
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Plot for [YNG] YOUNG5-OWN
Summary
Obs Used; 33
Obs Without Wind: 0
Avg Speed: 7.9 mph
Generated: 31 May 2023
Reference Map
Legend
0 Continuous Air Monitoring Locations with DustTrak
f«1 Continuous Air Monitoring Locations
Derailment Location
One Mile Radius
East Palestine Derailment ER Site
East Palestine, Columbiana County, OH 44413
Figure 1
Continuous Air Monitoring
Work Area Stations
Prepared For: EPA
Prepared By: TetraTech Inc.
Date Saved: 5/31/2023
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