Ohio State University Extension Bulletin

Suitability of Ohio Soils for Treating Wastewater

Bulletin 896


Figure 11. Soil unsuitable for waste application—Kokomo Series

a) Description of a single example profile:

Horizon Depth
Inches
Color Texture Structure Consistence Redox Perm.
In/hr
Ap 0-9 very dark
gray
(10Y R3/1)
silty clay
loam
weak fine
and medium
granular
friable   0.6-2
A 9-16 black
(10Y R2/1)
silty clay
loam
moderate
fine and
medium
angular
blocky
firm   0.6-2
Btg1 16-31 dark gray
(5Y R4/1
silty clay
loam
moderate
medium and
fine
subangular
and angular
blocky
firm common
medium
distinct dark
yellowish
brown
(10Y R4/4)
and few
medium
prominent
yellowish
brown
(10Y R5/6)
iron oxide
masses
0.2-0.6
Btg2 31-50 olive gray
(5Y 5/2)
silty clay
loam
moderate
coarse
subangular
blocky
firm common
coarse
prominent
strong
brown
(7.5Y R5/6)
and
yellowish
brown
(10Y R5/8)
iron oxide
masses
0.2-0.6
2C 50-64 brown
(10Y R5/3)
loam massive friable   0.2-0.6

b) Composite profile showing common range of depths for horizons

Figure 11


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