Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Office of Planning, Environment, & Realty (HEP)
PlanningEnvironmentReal Estate

HEP Events Guidance Publications Awards Contacts

FHWA and EPA National Near-Road Study Las Vegas

24 Appendix - Integrated Sample Data - VOC (TO-15)

SAS Dataset

Variables for VOC Data (samples collected using Summa Canisters: Method TO-15). id = station1, station2, station3, station4 location = 10 meter, 100 meter, 300 meter, Upwind SampleType = Field Blank, Field Control, Field Duplicate, Lab Duplicate, Sample SampleDateTime = Date and Time of Sample Buta_ppb = 1,3-Butadiene (ppb) Benz_ppb = Benzene (ppb) Acrolein_ppb = Acrolein (ppb) Flag_VOC = 0 or 1; 0 = valid data; 1 = invalid data (relates to the entire sample, across all pollutants) Flag_Buta = 0 or 1; 0 = valid data; 1 = invalid data Flag_Benz = 0 or 1; 0 = valid data; 1 = invalid data Flag_Acrolein = 0 or 1; 0 = valid data; 1 = invalid data

FieldComments = text field

AnalysisComments = text field

LabComments = text field

fcom = text field

December 15, 2008 thru December 15, 2009

1,3-Butadiene

SampleType

# of Samples

% by Sample Type

# of Samples w/ No Sample Collection Errors/

Warnings (Flag_Buta = 0)

% of Samples w/ No Sample Collection Errors/Warnings (Flag_Buta = 0)

# of Samples w/ Sample Collection Errors/

Warnings (Flag_Buta = 1)

% of Samples w/ Sample Collection Errors/

Warnings (Flag_Buta = 1)

Field Blank

70

5

55

4

15

1

Field Control

70

5

56

4

14

1

Field Dup

71

5

52

3

19

1

Lab Dup

108

7

89

6

19

1

Sample

1225

79

1019

66

206

13

Total

1544

 

1271

 

273

 
             
             
             

Benzene

           

SampleType

# of Samples

% by Sample Type

# of Samples w/ No Sample Collection Errors/ Flag_Benz Warnings (Flag_Benz = 0)

% of Samples w/ No Sample Collection Errors/ Flag_Benz Warnings (Flag_Benz = 0)

# of Samples w/ Sample Collection Errors/ Warnings (Flag_Benz = 1)

% of Samples w/ Sample Collection Errors/ Warnings (Flag_Benz = 1)

Field Blank

70

5

55

4

15

1

Field Control

70

5

56

4

14

1

Field Dup

71

5

52

3

19

1

Lab Dup

108

7

89

6

19

1

Sample

1225

79

1019

66

206

13

Total

1544

 

1271

 

273

 
             
             

Acrolein

           

SampleType

# of Samples

% by Sample Type

# of Samples w/ No Sample Collection Errors/ AcroleinWarnings (Flag_Acrolein = 0)

% of Samples w/ No Sample Collection Errors/ Acrolein Warnings (Flag_Acrolein = 0)

# of Samples w/ Sample Collection Errors/ Warnings (Flag_ Acrolein = 1)

% of Samples w/ Sample Collection Errors/ Warnings (Flag_ Acrolein = 1)

Field Blank

70

5

28

2

42

3

Field Control

70

5

29

2

41

3

Field Dup

71

5

28

2

43

3

Lab Dup

108

7

54

3

54

3

Sample

1225

79

511

33

714

46

Total

1544

 

650

 

894

 
Updated: 05/21/2013
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000