APPENDIX A: SOIL LOADING RATES FOR LEVEL C TREATMENT
Loading Rates for Determining Bottom Absorption Area for Trenches and Seepage Beds for Effluent Treatment Level C and Absorption Ratios for Determining Mound Absorption Areas using Detail Soil Descriptions
Texture
Texture Group
Structure
Consistence
Soil Loading Rate (gpd/ft2)
Mound Absorption Ratio
Type
Grade
Loading Rates for Determining Bottom Absorption Area for Trenches and Seepage Beds for Effluent Treatment Level C and Absorption Ratios for Determining Mound Absorption Areas using Detail Soil Descriptions
Texture
Texture Group
Structure
Consistence
Soil Loading Rate (gpd/ft2)
Mound Absorption Ratio
Type
Grade
Coarse sand*
1
Single grain
Structureless
Loose
-
1.0
Weakly cemented friable
-
2.0
Cemented-firm
-
-
Medium sand*
2
Single grain
Structureless
Loose
1.20
1.0
Weakly cemented friable
0.60
2.0
Cemented-firm
-
-
Fine sand
3
Single grain
Structureless
Loose
0.60
2.0
Weakly cemented friable
0.24
5.0
Cemented-firm
-
-
Coarse and medium loamy sand*
4
Single grain
Structureless
Loose
1.20
1.0
Weakly cemented friable
0.60
2.0
Cemented-firm
-
-
Fine and very fine loamy sand
5
Single grain
Structureless
Loose
0.60
2.0
Weakly cemented friable
0.24
5.0
Cemented-firm
-
-
Coarse and medium sandy loam
6
Prismatic, blocky, granular
Weak
Very friable, friable
0.45
2.6
Firm
0.24
5.0
Moderate or strong
Very friable, friable
0.78
1.3
Firm
0.45
2.6
Platy
Weak
Very friable, friable
0.45
2.6
Firm
0.24
5.0
Moderate or strong
Very friable, friable
0.45
2.6
Firm
-
-
Massive
Structureless
Very friable, friable
0.24
5.0
Firm
-
-
Fine and very fine sandy loam
7
Prismatic, blocky, granular
Weak
Very friable, friable
0.24
5.0
Firm
0.24
5.0
Moderate or strong
Very friable, friable
0.60
2.0
Firm
0.24
5.0
Platy
Weak
Very friable, friable
0.24
5.0
Firm
-
-
Moderate or strong
Very friable, friable
-
-
Firm
-
-
Massive
Structureless
Very friable, friable
0.24
5.0
Firm
-
-
Loam
8
Prismatic, blocky, granular
Weak
Very friable, friable
0.45
2.6
Firm
0.24
5.0
Moderate or strong
Very friable, friable
0.60
2.0
Firm
0.24
5.0
Platy
Weak
Very friable, friable
0.24
5.0
Firm
-
-
Moderate or strong
Very friable, friable
-
-
Firm
-
-
Massive
Structureless
Very friable, friable
0.24
5.0
Firm
-
-
Silt loam
9
Prismatic, blocky, granular
Weak
Very friable, friable
0.45
2.6
Firm
0.24
5.0
Moderate or strong
Very friable, friable
0.50
2.4
Firm
0.24
5.0
Platy
Weak
Very friable, friable
0.24
5.0
Firm
-
-
Moderate or strong
Very friable, friable
-
-
Firm
-
-
Massive
Structureless
Very friable, friable
0.24
5.0
Firm
-
-
Clay loam, silty clay loam,
sandy clay loam
10
Prismatic, blocky, granular
Weak
Very friable, friable
0.24
5.0
Firm
-
-
Moderate or strong
Very friable, friable
0.45
2.6
Firm
0.24
5.0
Platy
Weak
Very friable, friable
-
-
Firm
-
-
Moderate or strong
Very friable, friable
-
-
Firm
-
-
Massive
Structureless
Very friable, friable
-
-
Firm
-
-
Clay,
silty clay, sandy clay
11
Prismatic, blocky, granular
Weak
Very friable, friable
-
-
Firm
-
-
Moderate or strong
Very friable, friable
0.24
5.0
Firm
-
-
Platy
Weak
Very friable, friable
-
-
Firm
-
-
Moderate or strong
Very friable, friable
-
-
Firm
-
-
Massive
Structureless
Very friable, friable
-
-
Firm
-
-