How does failing a random drug screen by admitting affect the future of my Driving privileges?

I do have a small handfull of questions regarding this matter. But first a little info to better help you understand the situation.

Two weeks ago I put in my two week notice of quitting my job. June 6th was my 1 year anniversary at this particular job. And my last shift would have been last night to this morning before quitting. Yesterday (sunday night into monday morning) after my shift my name was choosen to take a random drug test. I possess a Class A CDL. And my days off include tues through fri, since I usually work 9pm – 7am sat through mon as a yard goat operator. A CDL is required for this position with the company I was working for.

Apon notice of random drug screen testing I quickly relised I was not going to be able to drive myself, so that itself lessoned my abilities to swing by a store of any kind to pick up some type of detox to clean my UA sample that I was going to be forced to give. Plus that particular dr place usually is anything but speedy on getting people through. So instead of wasting the possible 2 hours of time it would take to do the test. And since I smoked a blunt fri night. And I knew with out a doubt I was going to fail. I admitted "Mostly likely the test will come back dirty due to being at a party and being a little drunk I smoked a blunt" Next thing, phone calls were made by my boss, and I speak with some guy in a different state. Telling me to jot this number down, I do. Its a numbr to a SAP.

The day I was suppose to quit, I was planning on getting out and away from the trucking industry all together. Do to different reasons I have over the past 11yrs and changes that have occured within the trucking industry as a whole and as laws and rules have changed. My work history is close to perfect, my driving history is kind of close to perfect (have had a couple speeding tickets 5+ years ago). Though in all of my life I have never had any kind of buzz while on the job, and I have never been under the influence of anything with in 24hrs of either being on the job, operating any type of machinery, and playing with power tools in my garage.

So here are my questions. Please answer with details if possible and with correct numbering so its easier to read.
1) I understand by admitting it is basically the same as failing or refusing. So from what I understand the fail to comply with company and DOT regulations will be placed on my DAC report.
Is this going to suspend my Class A CDL in AZ?

2) I was planning on reverting my license back to a regular operator’s license in a couple of months. Will this event, in any way shape or form restrict me from being able to revert my license back to a regular class c operators license? Also, would this imput any restrictions on my license if held a regular operators license in AZ?

3) Since I don’t plan on driving a semi truck any longer, not due to this event, but for personal reasons previously mentioned. How could I benefit from the SAP number I was provided? If I was to go that route here in AZ.

4) I was under the impression that time earned at any company, inables you to collect vacation pay. Can this company legally refuse to pay my vacation pay due to early termination, given that the notice to pay my vacation pay was placed in the books on the same date as my 2 week notice quit date?

unless you actually failed the drug test or put in writing that you would fail, you are clean in the eyes of the law.
they can report you refused but that is about it.
there are some states that require vacation time be paid AZ is not one of those states.