Table 1

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

Monitoring Period: 03/05/2023 00:00 through 03/06/2023 12:18

Air Monitoring

Instrument:
Serial Number

Analyte

Screening Level1

Screening Level
Exceeded?

8-hour Period
Concentration
Range

Average of All
8-hour Periods

8533230504

PM2 5 (mg/m3)

0.035 mg/m3

Yes

0.007 to 0.094

0.032

PM10(mg/m3)

0.035 mg/m3

Yes

0.007 to 0.096

0.036

W01A00001706

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

0.0 to 0.0

0.0

W01A00001710

VOC (ppm)

0.5 ppm

No

0.00 to 0.13

0.03

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

LEL (%)

>5%

No

0.0 to 0.0

0.0

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

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

W01B00002164

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.01

0.00

H2S (ppm)

0.1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

W01B00002170

VOC (ppm)

0.5 ppm

No

0.00 to 0.05

0.02

CO (ppm)

9 ppm

No

0.00 to 0.03

0.01

H2S (ppm)

0.1 ppm

No

0.0 to 0.0

0.0

HCN (ppm)

1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.5

0.2

W01B00002172

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

0.0 to 0.0

0.0

HCN (ppm)

1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

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

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

W01B00002183

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

0.0 to 0.0

0.0

HCN (ppm)

1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

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

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

W01B00002207

VOC (ppm)

0.5 ppm

No

0.00 to 0.03

0.01

CO (ppm)

9 ppm

No

0.00 to 0.00

0.00

H2S (ppm)

0.1 ppm

No

0.0 to 0.0

0.0

HCN (ppm)

1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

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

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0


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Table 1

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

Monitoring Period: 03/05/2023 00:00 through 03/06/2023 12:18

Air Monitoring

Instrument:
Serial Number

Analyte

Screening Level1

Screening Level
Exceeded?

8-hour Period
Concentration
Range

Average of All
8-hour Periods

W01B00002220

VOC (ppm)

0.5 ppm

No

0.00 to 0.01

0.00

CO (ppm)

9 ppm

No

0.00 to 0.01

0.00

H2S (ppm)

0.1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

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

0.0 to 0.0

0.0

W01B00002222

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.25

0.09

H2S (ppm)

0.1 ppm

No

0.0 to 0.0

0.0

LEL (%)

>5%

No

0.0 to 0.0

0.0

W01B00002223

VOC (ppm)

0.5 ppm

No

0.00 to 0.00

0.00

CO (ppm)

9 ppm

No

0.00 to 0.01

0.00

H2S (ppm)

0.1 ppm

No

0.0 to 0.0

0.0

Notes:

1	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


-------
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Plot for [YNG] YOUNC

Summary
Obs Used; 36
Obs Without Wind: 0
Avg Speed: 8.4 mph

Generated: 06 Mar 2023

F8

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W Martin St

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TETRA TECH

Prepared By: TetraTech Inc.

State
Gamelands No
285

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

East Palestine Derailment ER Site
75 E Main St
East Palestine, Columbiana County, OH 44413

Reference Map

Date Saved: 3/6/2023


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