Table 1
Community Roving Air Monitoring Results Summary Table
East Palestine Derailment Emergency Response
East Palestine, Ohio
Monitoring Period: 05/09/2023 08:08 to 05/09/2023 16:31
VOC (ppm)
PM2 5 (mg/m3)1
PM10 (mg/m3)1
Location
Date/Time
Screening Levels
0.5 ppm
0.035 mg/m3
0.070 mg/m3
PCR-N-03
5/9/2023 8:16
0
0.01
0.016
5/9/2023 11:00
0
0.007
0.01
PCR-N-04
5/9/2023 8:57
0
0.011
0.015
5/9/2023 11:44
0
0.009
0.013
PCR-N-05
5/9/2023 9:09
0
0.01
0.012
5/9/2023 11:55
0
0.008
0.011
PCR-N-06
5/9/2023 8:47
0
0.01
0.013
5/9/2023 11:34
0
0.009
0.013
PCR-N-07
5/9/2023 8:22
0
0.009
0.012
5/9/2023 11:05
0
0.008
0.011
PCR-N-08
5/9/2023 8:27
0
0.009
0.011
5/9/2023 11:11
0
0.009
0.012
PCR-N-09
5/9/2023 8:33
0
0.009
0.012
5/9/2023 11:18
0
0.007
0.009
PCR-N-10
5/9/2023 8:38
0
0.01
0.013
5/9/2023 11:25
0
0.017
0.019
PCR-N-11
5/9/2023 9:16
0
0.01
0.013
5/9/2023 12:04
0
0.01
0.015
PCR-N-12
5/9/2023 9:22
0
0.009
0.013
5/9/2023 12:10
0
0.008
0.01
PCR-N-13
5/9/2023 8:53
0
0.019
0.04
5/9/2023 11:40
0
0.009
0.014
PCR-S-01
5/9/2023 10:46
0
0.008
0.011
5/9/2023 16:31
0
0.008
0.01
PCR-S-04
5/9/2023 10:39
0
0.008
0.01
5/9/2023 16:18
0
0.01
0.012
PCR-S-05
5/9/2023 10:23
0
0.007
0.009
5/9/2023 16:07
0
0.01
0.017
PCR-S-06
5/9/2023 10:13
0
0.009
0.014
5/9/2023 15:56
0
0.01
0.014
PCR-S-07
5/9/2023 10:07
0
0.013
5/9/2023 15:49
0
0.011
0.015
PCR-S-08
5/9/2023 9:32
0
0.01
0.013
5/9/2023 14:00
0
0.018
0.032
PCR-S-09
5/9/2023 10:28
0
0.007
0.011
5/9/2023 16:14
0
0.009
0.012
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 r5_eastpalestine@epa.gov
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Table 1
Community Roving Air Monitoring Results Summary Table
East Palestine Derailment Emergency Response
East Palestine, Ohio
Monitoring Period: 05/09/2023 08:08 to 05/09/2023 16:31
Location
Date/Time
VOC (ppm)
PM2 5 (mg/m3)1
PM10 (mg/m3)1
Screening Levels
0.5 ppm
0.035 mg/m3
0.070 mg/m3
PCR-S-10
5/9/2023 8:08
0
0.01
0.012
5/9/2023 10:54
0
0.007
0.01
PCR-S-14
5/9/2023 9:49
0
0.014
0.022
5/9/2023 14:09
0
0.015
0.024
PCR-S-15
5/9/2023 9:56
0
0.027
0.045
5/9/2023 14:16
0
0.009
0.01
PCR-S-16
5/9/2023 9:38
0
0.008
0.01
Notes:
Highlighted indicate detections above screening levels
Grey cells indicate no measurement was collected for that specific parameter
1 - Site-Specific Public Health Screening Levels for particulate matter are based on 24-hour time-weighted
averages (TWAs). Fixed discrete monitoring readings are discrete readings, and so do not represent
conditions over a full 24-hour period. 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.
mg/m - milligrams per cubic meter
PM2 5 - particles that are 2.5 micrometers and smaller
PM10 - particles that are 10 micrometers and smaller
ppm - parts per million
TWA - time-weighted average
VOC - volatile organic compounds
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O Roaming Air Monitoring Locations
Derailment Location
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East Palestine Derailment ER Site
East Palestine, Columbiana County, OH 44413
Figure 1
Roaming Air Monitoring
Community Locations
TETRA TECH
Prepared For: EPA
Prepared By: TetraTech Inc.
Reference Map
Location
Date Saved: 5/9/2023
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