Ok, I'm shutting this down (for now).
*FOR BANGKOK ONLY*
According to this slightly outdated flyer, 90 day report and TM30 are at Muang Thong Thani. (Note: Counter J has just moved back to CW).
The GPS location of Muang Thong Thani is 13.
*****
78,100.
*****
33
You *MAY* be able to make a reservation to do the 90 day report at
***********************************************
FOR BANGKOK ONLY.
IF you want to do the 90 day report via mail, you can only send it 15 days before, and you'd send it to CW.
Is the OP using Bangkok? I don't know, because I don't know what CHW and PTT is.
@Chris ****
, if you can let a mod know what PTT and CHW is, we'll reopen the post for you.