lol no worries. examine any weed roots nearby for root aphids and it's best to sieve/riddle the soil and keep a close eye on it as it comes through for any grubs/cutworms.
the main thing is knowing what good topsoil is - and im sure you are well qualified to judge that
VG
Good virgin topsoil? The way I determine is as follows.
If you lay on the ground and stick your dick in a hole, and a tree grows out of your ass, it's good..... very good.