I mean other than improper…or maybe I am wrong.
“…unapproved corrugated drain susceptible to clogs…Recommend repair by a licensed plumbing contractor.”
No issue with two traps dumping into the same line?
That is not an actual double trap situation.
Depends on whose codes you follow however.
was that a 3 bowl sink ?
The vertical in back is the vent pipe.
It looks like it with the garbage disposal, eh, Jim?