Baby grubs found! July 3/13- hatched already?

When I sent photos to some experts- a couple of entomologists and a turf specialist- here's what they said

  I think, it is a May/June beetle grub. The adult beetle typically emerge from soil in May/June and lay eggs, those eggs hatch in June/July. - Thurka

1. Was just thinking about this.  It is damn early.  Maybe they are June beetle grubs.  Adults would have emerged 2-4 weeks ago -Pam
2. I am thinking that it may be first instar May/June beetles. -Stacey