Table 1

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

Monitoring Period: 03/09/2023 00:00 through 03/10/2023 11:27

Air Monitering

Instrument:
Serial Number

Analyte

Screening Level1

Screening Level
Exceeded?

8-hour Period
Concentration Range

Average of All
8-hour Periods

8533230503

PM2 5 (mg/m3)

0.035 mg/m3

No

0.009 to 0.019

0.013

PM10 (mg/m3)

0.035 mg/m3

No

0.012 to 0.03

0.021

8533230504

PM2 5 (mg/m3)

0.035 mg/m3

No

0.001 to 0.028

0.01

PM10 (mg/m3)

0.035 mg/m3

No

0.003 to 0.029

0.012

8533230702

PM2 5 (mg/m3)

0.035 mg/m3

No

0.005 to 0.031

0.014

PM10 (mg/m3)

0.035 mg/m3

No

0.011 to 0.034

0.021

W01A00002173

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01A00002175

VOC (ppm)

0.5 ppm

No

0.00 to 0.01

0.00

CO (ppm)

9 ppm

No

0.00 to 0.41

0.12

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01A00002181

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 3.16

1.27

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01A00002182

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01A00002185

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

Yes

0.00 to 9.27

3.17

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002162

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002164

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002170

VOC (ppm)

0.5 ppm

No

0.00 to 0.0

0.00

CO (ppm)

9 ppm

No

0.00 to 0.01

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

HCN (ppm)

1 ppm

No

0.00 to 0.00

0.00


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Table 1

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

Monitoring Period: 03/09/2023 00:00 through 03/10/2023 11:27

Air Monitering

Instrument:
Serial Number

Analyte

Screening Level1

Screening Level
Exceeded?

8-hour Period
Concentration Range

Average of All
8-hour Periods

W01B00002172

VOC (ppm)

0.5 ppm

No

0.00 to 0.0

0.00

CO (ppm)

9 ppm

No

0.00 to 0.02

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

HCN (ppm)

1 ppm

No

0.00 to 0.00

0.00

W01B00002181

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002183

VOC (ppm)

0.5 ppm

No

0.00 to 0.01

0.00

CO (ppm)

9 ppm

No

0.00 to 0.0

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.28

0.09

HCN (ppm)

1 ppm

No

0.00 to 0.00

0.00

W01B00002206

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002208

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002220

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

W01B00002221

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

W01B00002222

VOC (ppm)

0.5 ppm

No

0.00 to 0.04

0.01

CO (ppm)

9 ppm

No

0.00 to 0.01

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.00 to 0.00

0.00

HCN (ppm)

1 ppm

No

0.00 to 0.00

0.00

W01B00002223

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.00 to 0.00

0.00


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Table 1

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

Monitoring Period: 03/09/2023 00:00 through 03/10/2023 11:27

Notes:

Site-Specific Action Level stated in the Tetra Tech Air Monitoring and Sampling Plan.
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:

< - Less than
> - Greater than
% - Percent

CO - Carbon Monoxide

H2S - Hydrogen Sulfide

HCN - Hydrogen Cyanide

LEL - Lower Explosive Limit

02 - Oxygen

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 r5_eastpalestine@epa.gov	


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Reference Map

Legend

0 Continuous Air Monitoring Locations with DustTrak
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h Derailment Location

One Mile Radius

Miles

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

Figure 1

Continuous Air Monitoring
Community Stations

TETRA TECH

Prepared For: EPA

Prepared By: TetraTech Inc.

Date Saved: 3/10/2023


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