You got it. Care must be taken to set the necessary inlet and outlet inverts in order to maintain the leaching affect within the leach field tiles. Too steep or too shallow of a slope on the leach feild tiles would result in a poor design.
Dik,
Thanks for the help. After investigation, the leach field drop box is very the same thing as a stormsewer manhole in which the invert of the incoming pipe is set higher than the outgoing pipe. Its application is used on side slopes that are steep.
I appreciate the help.