thanks everyone, especially FBR for chiming in. you obviously know your stuff!!
i thought that the minimum volume required for a sample was 60mL and you didn't get any extra. knowing that it's 45mL and you have 1/2 ounce more than you need is definitely very reassuring. also very reassuring that you haven't ever been asked for more, killerweed! thanks for the input!!!

i don't think i'll be too paranoid with just one anymore. plus it's going to be a long line of contractors filing into a site. i don't think they're going to fuck around and play games requiring more piss than is necessary. this a "get 'er done" job and i'm sure they don't want to have to deal with positives any more than the employees who get them.

anyone, i got my AWESOME undies with an inside pocket in them today!! they are REALLY sweet and helpful for not only this, but any time you have to go somewhere with a small bag on you (<1oz or so). i may see how 2 fits in there, but i think i have the confidence to get through with 1 now if it's too uncomfortable.

thanks everyone for the help. this site is a lifesave!

later,
lamposter