How do I unlock the landfill?
Where can I get a bikini?
Viewing post in Pawn Pleasure - Free Release comments
The junkyard is unlocked talking with Cassia after the policwoman tell you that some customer could try to sell fake objects and the inspection is unlocked.
For the bikini (I think you mean the one you need to unlock more actions with Cassia) you need to buy it from customers or sometimes you can find it at auction (I found it there)