Seal with lid and set timer for 20 minutes to pressure cook.Pulling it all togetherI store these two separately.

Option 1:The additional Cost for everything extra needed plus water proofing driveway side would be $5577.50Option 2:The additional Cost for everything extra needed without water proofing would be $2587.50**************************************************************I have asked the PM how much additional cost if I chose Option 2 with interior membrane to seal the wall as this is the way I am currently leaning and the PM will send out another company for quotes for the interior membrane.

I would also install sweeps on the inside of all doors on the bottom and redo the insulation (I can't remember the name-but the squishy stuff on the door frame that creates a seal when the door is closed). 

Since there is additional work needed our vendor has sent me 2 estimates of extra costs below.Option 1:The additional Cost for everything extra needed plus water proofing driveway side would be $5577.50Option 2:The additional Cost for everything extra needed without water proofing would be $2587.50**************************************************************I have asked the PM how much additional cost if I chose Option 2 with interior membrane to seal the wall as this is the way I am currently leaning and the PM will send out another company for quotes for the interior membrane.

It's even recommended that delivery boxes be left outside for two days, then picked-up with gloved hands, placed in a plastic trash bag, sealed, thrown away, followed by hand washing. 

When was the parking lot last paved, sealed? 

@Troy Seals figure out a good system that works for you and get in the habit of documenting as much as you can.

Or a seal around a vent pipe?

A bit of time air sealing and adding insulation as much as possible will go a long way to minimize system costs.

In our unit, we have sealed up all 'holes' we can find.