Ground-water development in East St. Louis area, Illinois. Urbana, IL ...

Table 8.
Drillers Logs of Wells Used in Aquifer Test I
Formation
Test Well 8
From
Clay fill 0 7
Fine sand 7 24
Fine to medium gray sand 24 37
Medium to coarse sand 37 41
Fine sand 41 55
Medium to coarse sand 55 64
Medium sand 64 65
Medium to coarse sand 65 73
Very coarse sand 73 80
Coarse to medium sand with cobbles 80 84
Coarse to medium sand 84 85
Medium to fine sand with gravel 85 90
Medium sand with gravel 90 95
Fine sand with gravel at 103.5 feet 95 103.5
Fine to coarse sand with gravel and
cobbles 103.5 104
Coarse sand to heavy gravel with
cobbles 104 106.9
(unable to drill beyond 106.9 feet
because of heavy cobbles)
Formation
Test Well 9
From
Fill, clay, gravel 0 5
Silt and sandy silt 5 33
Medium gray sand 33 40
Fine sand, gray 40 45
Medium sand, gray 45 50
Coarse sand, gray, trace of clay 50 52
Very coarse sand with gravel 52 56
Medium coarse sand with gravel 56 58
Coarse gravel sand with gravel 58 62
Very coarse sand with gravel 62 63
Coarse sand and very coarse sand 63 72
Coarse to medium sand 72 79
Fine to medium sand with cobbles 79 79.5
Fine sand 79.5 80
Fine to medium sand 80 82
Medium coarse sand with gravel 82 83
Very coarse sand with gravel and
lignite, cobbles at 88 feet 83 89.5
Coarse to medium sand 89.5 98
Very fine sand 98 100
Fine sand with gravel, cobbles at
102 feet 100 102.5
Coarse sand with gravel 102.5 104
Coarse sand with gravel and cobbles 104 113
Formation
Test Well 10
From
Gravel fill, gumbo 0 10
Dark silt 10 32
Fine gray sand 32 33
Dark fine silt 33 36
Medium fine sand 36 43
Fine sand 43 47
(It)
(ft)
(It)
To
To
To
Formation
Test Well 10 (Continued)
From
Dark gray silty sand 47 55
Fine sand 55 57
Medium fine sand 57 74
Very coarse sand with pea gravel
and lignite 74 74.5
Very coarse sand with cobbles 74.5 80
Very coarse sand 80 87
Medium coarse sand with cobbles
from 89 to 91 feet 87 90
Fine sand 90 95
Very fine sand 95 99
Very fine sand with cobbles at 100.5 feet 99 100
Coarse sand with cobbles 100 102
Coarse sand with cobbles 102 103
Coarse sand 103 104
Coarse sand with gravel 104 114
Formation
Test Well 11
From
Mixture of clay, fill, silt, fly ash 0 10
Fine gray silt 10 15
Very fine gray sand 15 20
Fine gray sand 20 25
Fine to medium gray sand 25 40
Medium gray sand 40 45
Medium to fine gray sand 45 52
Medium to coarse sand 52 55
Fine to medium sand 55 61
Medium to fine sand 61 73
Medium sand 73 76
Coarse sand 76 80
Very coarse sand with cobbles 80 87
Medium to coarse sand with cobbles 87 95
Fine to medium sand 95 95.5
Medium to coarse sand with
½-inch gravel 95.5 100
Very coarse sand and gravel with
boulders 100 115
Formation
Well 20
From
Silty sandy gray clay 0 15
Medium gray sand 15 20
Fine gray sand 20 25
Coarse gray sand 25 30
Fine to medium gray sand 30 35
Very fine sand 35 53
Very coarse sand with 2-inch gravel 53 55
Medium sand with gravel 55 57.5
Medium to coarse sand with gravel 57.5 60
Very coarse sand with pea gravel 60 65
Medium to coarse sand with gravel 65 75
Coarse sand 75 80
Very coarse sand with pea gravel 80 83.5
Medium to coarse sand 83.5 85
Very coarse sand with 2-inch gravel 85 107
(ft)
(ft)
(ft)
To
To
To
14