Re: Standing water in crawlspace
What you do depends on what the problem is.
An 80 year old house would not have lasted this long if sub area water were a constant problem, which means it's a relatively new development. My suspicion is that either landscaping or water handling at the house has compromised drainage.
Make sure that the ground falls away from the house in all directions and that downspouts are directed at least three feet away from the house. My preference for downspouts drains is to direct them into drainage systems (3" corrugate drain line ) that runs to municipal collection systems.
You also mentioned that some of the framing is just inches above the dirt. Excavate that area to a minimum of 8", though 12" or more would be better and 18" optimal. Don't undercut foundations with excavation, cut the dirt at approximately a 30 to 45 degree slope from the side of the foundation to the bottom of the excavation. Leave the dirt undisturbed in at least a 3 foot diameter around central piers OR resupport house, dig out dirt and set a new pier and post.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!