Glass found in newly graded loam

[bobcat175]

Just had 320 yards dumped and graded. Now finding glass all over. Currently have a large freezer zip-loc bag about full. And that's just from walking around the top layer. I realize that the holes in the loam screens will let glass through but this is a safety issue with kids and pets. What's the RIGHT way to fix this? Should scraping the top layer and covering with more clean loam work? What to do now?

[bobcat175]

anyone?
Is there a way to maybe use a harley power rake then sift/screen it?