Table 1

Community Continuous Air Monitoring Results
East Palestine Derailment Site
East Palestine, Columbiana County, Ohio

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 webpages,
please contact the Region 5 Public
Information Officer on-call at:
R5_EastPalestine@epa.gov

Monitoring Period: 04/02/2023 00:00 through 04/02/2023 23:59

Air Monitoring

Instrument:
Serial Number

Analyte

Screening Level1

Screening Level
Exceeded?

8-hour Period
Concentration Range

Average of All
8-hour Periods

8533230503

PM2 5 (mg/m5)

0.035 (mg/nO

No

0.001 to 0.009

0.004

PM10 (mg/m1)

0.070 (mg/m )

No

0.001 to 0.013

0.005

8533230504

PM2 5 (mg/m5)

0.035 (mg/nO

No

0.010 to 0.034

0.020

PM10 (mg/m1)

0.070 (mg/m )

No

0.018 to 0.047

0.032

8533230702

PM2 5 (mg/m5)

0.035 (mg/nO

No

0.003 to 0.011

0.006

PM10 (mg/m1)

0.070 (mg/m )

No

0.004 to 0.012

0.006

W01A00000609

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01A00002175

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01A00002182

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002162

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002164

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002170

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002172

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002181

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002183

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002206

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002208

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002209

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002220

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.04

0.02

W01B00002221

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002222

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01B00002223

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

W01A00002181

VOC (ppm)

0.5 (ppm)

No

0.00 to 0.00

0.00

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.

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:

mg/m - 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
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 r5_eastpalestine@epa.gov


-------
East Palestine
Cemetery

Jimtown

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Summary
x Obs Used: 23
Obs Without Wind: 3
Avg Speed: 9.5 mph

Generated: 07 Apr 2023

It

TETRA TECH

Prepared By: TetraTech Inc.

Figure 1

Continuous Air Monitoring
Community Stations

Legend

0 Continuous Air Monitoring Locations with DustTrak
[¦"] Continuous Air Monitoring Locations

h Derailment Location

One Mile Radius

Reference Map

East Palestine Derailment ER Site
East Palestine, Columbiana County, OH 44413

Miles

Date Saved: 4/4/2023


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