How to secure vinyl post caps

The bubble doesn't necessarily mean it wasn't glued, but rather that air became trapped under the vinyl while it was being put down - which means that the people putting it down didn't do it properly.

When installing vinyl, it should be unrolled slowly, with even pressure being applied along the length of the floor as it's being unrolled (slow, tedious work) and then when it's down a floor roller should be used over the entire floor, working from the center to the edges, to push air out.

Big bubbles means this wasn't done - it was put down in a hurry. If the adhesive has set up already, it is almost impossible that they'll be able to pull it up again w/o destroying the vinyl.

The underlayment won't need removal, but the existing vinyl will need to be removed and the underlayment cleaned and scraped smooth before the replacement is applied.

If you have municipal trash collection, you'll want to contact the company in charge of pickup. It's quite common for them to have a website, which typically has information about how to handle various types of waste.

If you're not sure who handles the collection. That information is usually available on the town/city website, or by calling the town/city.

If you take your waste to the dump (not sure if folks still have to do this), you could simply ask someone on your next trip.