Ambient Air Sampled on Top of Parkers Chapel Water Tower on 9/24/76 and 9/25/76 

Table 4.23. VOLATILE ORGANICS IDENTIFIED IN AMBIENT AIR TAKEN ON PARKER'S CHAPEL WATER TOWER NEAR EL DORADO, ARKANSAS

Chromatographic Peak No.

Elution Temperature Celsius

Compound

1

43

butane + dichlorodifluoromethane

2

47

acetaldehyde

2A

47

isopentane

3

48

trichlorofluoromethane

4

49

propanal + C5H10 isomer

5

49

n-pentane

5A

50

acetone

5B

50

C5H10 isomer

6

51

dichloromethane + fluorotrichloromethane

6A

52

isopropanol

6B

54

C6H12 isomer

7

55

2-methylpentane

8

57

3-methylpentane

8A

57

C6C12 isomer

9

58

hexafluorobenzene 

10

59

n-hexane

10A

59

chloroform

11

62

perfluorotoluene

11A

63

methylcyclopentane

12

64

1,1,1-trichloroethane

12A

65

butanal isomer

12B

66

C7H14 isomer

12C

66

C6H10

13

67

benzene

13A

67

carbon tetrachloride

14

68

cyclohexane

14A

69

C7H14 isomer

15

69

2-methylhexane

15A

70

2,3-dimethylpentane

16

71

3-methylhexane

16A

72

methyl isopropyl ketone

17

72

dimethylcyclopentane isomer + pentanal

18

73

methylhexane isomer + trichloroethylene

19

73

C7H14 isomer

20

75

n-heptane

20A

77

C7H14 isomer

21

79

methylcyclohexane

21A

80

C8H16 isomer

22

81

2,4-dimethylhexane

23

83

1,2,3-trimethylcyclopentane

23A

83

C8H16 isomer

24

85

trimethylpentane isomer

24A

86

C8H16 isomer

25

86

toluene

25A

87

2,3-dimethylbenzene

26

88

2-methylheptane

26A

88

4-methylheptane

27

89

3-methylheptane

27A

90

1,trans-2-dimethylcyclohexane

28

91

1,cis-2-dimethylcyclohexane

29

92

C9H20 isomer

29A

92

hexanal

30

93

C8H16 isomer

30A

94

C8H16 isomer

31

95

n-octane

31A

96

tetrachloroethylene

31B

96

C8H16 isomer

31C

98

C8H16 isomer

32

99

C9H20 isomer

32A

100

silane compound  (BKG)

33

101

2,4-dimethylheptane

34

102

2-methyloctane or 2,4-dimethylheptane

35

102

ethylcyclohexane

36

103

C9H20 isomer

36A

104

C9H18 isomer

36B

105

trimethylcyclohexane isomer

36C

106

C9H20 isomer

37

107

ethylbenzene

37A

107

trimethylcyclohexane isomer

37B

108

4-methyloctane

38

109

p-xylene

38A

110

C9H20 isomer

39

110

m-xylene

40

111

3-methyloctane

40A

112

styrene + C9H18 isomer

40B

112

dimethylpentanol (tent.) isomer

41

113

o-xylene

41A

114

n-heptanal

42

115

methyl ethylcyclohexane isomer

42A

116

C9H18 isomer

43

117

n-nonane

44

118

C9H18 isomer

44A

119

C10H20 isomer

45

120

isopropylbenzene

45A

120

dimethyloctane isomer

46

121

tetramethylhexane isomer

47

122

C10H22 isomer

47A

123

C10H20 isomer

48

123

propylcyclohexane

49

124

C10H22 isomer

49A

125

C10H20 isomer

50

125

n-propylcyclohexane

50A

126

C10H20 isomer

51

127

p-ethyltoluene

51A

128

C10H22 isomer

52

128

m-ethyltoluene

52A

129

C10H22 isomer

53

129

C11H24 isomer

54

130

C11H24 isomer

55

131

3-methylnonane

56

133

dimethyloctane isomer

56A

133

C11H24 isomer

57

134

0-ethyltoluene

57A

135

C10H20 isomer

57B

136

C11H22 isomer

58

137

n-decane

58A

138

C4-alkyl benzene isomer

59

138

C11H24 isomer

59A

139

C11H22 isomer

59B

139

1,2,3-trimethylbenzene

60

140

C11H24 + C4-alkyl benzene isomer

61

141

C11H24 isomer

62

142

C12H26 isomer

63

143

butylcyclohexane

63A

144

C12H26 ismomer

64

145

C4-alkyl benzene isomer

64A

145

C12H26 isomer

64B

146

n-butylbenzene + propyltoluene isomer

64C

146

C11H22 isomer

65

147

C12H26 isomer

66

148

C11H24 isomer

67

149

C12H26 isomer

68

149

C12H26 isomer

69

150

C11H22 isomer

70

151

C11H24 isomer

70A

151

C12H24 isomer

71

152

C11H22 isomer

71A

153

C11H24 isomer

72

153

nonanal

72A

154

C11H22 isomer

73

155

n-undecane

73A

157

C12H24 isomer

73B

163

C12H26 isomer

73C

165

C13H28 isomer

73D

170

C12H26 isomer

73E

173

n-dodecane (tent.)

73F

191

C15H32 isomer

 

SOURCE:  EPA-560-6-78-002

The above listed chemicals are published without concentration levels.  I submitted a FOIA request for the concentration levels on Friday, January 28, 2005.  I restated this FOIA request for clarity on February 1, 2005.