35 Ill. Adm. Code 560.202
Method of Application
Section 560
Section 560.202 Method of
Application
Surface application may be used
when the land slope is no greater than 5% or when the yearly average soil loss
is less than 5 tons per acre (regardless of slope) as determined by the
Universal Soil Loss Equation (see Appendix B). Injection or surface application
with immediate incorporation should be used when the land slope is greater than
5% and the yearly average soil loss is greater than 5 tons/acre. However, even
at land slopes less than 5%, soil losses and associated pollution may reach an
unacceptable level.