Ill. Admin. Code tit. 35, pt. 742, subpt. L, app C, tbl. K

Current through Register Vol. 48, No. 49, December 6, 2024

Table K - Parameter Estimates for Calculating Water-Filled Soil Porosity ([THETAw])

Soil Texture^a	Saturated Hydraulic Conductivity, K_s (m/yr)	1/(2b+3)^b
Sand	1,830	0.090
Loamy Sand	540	0.085
Sandy Loam	230	0.080
Silt Loam	120	0.074
Loam	60	0.073
Sandy Clay Loam	40	0.058
Silt Clay Loam	13	0.054
Clay Loam	20	0.050
Sandy Clay	10	0.042
Silt Clay	8	0.042
Clay	5	0.039

^a The appropriate texture classification is determined by a particle size analysis by ASTM D2488-93 as incorporated by reference in Section 742.210 and the U.S. Department of Agriculture Soil Textural Triangle shown in Appendix C, Illustration C.

^b Where b is the soil-specific exponential parameter (unitless)

Ill. Admin. Code tit. 35, pt. 742, subpt. L, app C, tbl. K

Amended at 31 Ill. Reg. 4063, effective February 23, 2007