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Table 4 Concentrations of volatile compounds exceeding health-based risk levels in samples collected in Arkansas

From: Air concentrations of volatile compounds near oil and gas production: a community-based exploratory study

State/ID

County

Nearest infrastructure

Chemical

Concentration (μg/m3)

ATSDR MRLs exceeded

EPA IRIS cancer risk exceeded

AR-3136-003

Faulkner

355 m from compressor

Formaldehyde

36

C

1/10,000

AR-3136-001

Cleburne

42 m from compressor

Formaldehyde

34

C

1/10,000

AR-3561

Cleburne

30 m from compressor

Formaldehyde

27

C

1/10,000

AR-3562

Faulkner

355 m from compressor

Formaldehyde

28

C

1/10,000

AR-4331

Faulkner

42 m from compressor

Formaldehyde

23

C

1/10,000

AR-4333

Faulkner

237 m from compressor

Formaldehyde

44

C, I

1/10,000

AR-4724

Van Buren

42 m from compressor

1,3-butadiene

8.5

n/a

1/10,000

AR-4924

Faulkner

254 m from compressor

Formaldehyde

48

C, I

1/10,000

  1. C = chronic; I = intermediate.
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Environmental Health

ISSN: 1476-069X