Not to mention the 18" diameter tree growing out of the chimney.  

We've also used foam in a can in hard to reach areas and contained the foam around the pipes by using larger diameter pvc piping encased around the existing pipe...just need to split the pvc pipe long ways to get it onto the existing pipe and make sure to fill the void area in between.  

There is a tree on the survey that isn't marked with it's DBH (basically, the tree diameter);2.

A very simple (effective, but not attractive) solution to the sump pump (in a situation where you don't have just a cascade of water coming in) -5gal bucket with the bottom mostly cut out (leave a bit of a lip)Automatic sump pump2 bags pea gravel1 bag sandPVC pipe to run out of the crawl space from the sump pumpDig a hole 8-10" larger in diameter than your bucket and about 8-10" deeper than the bucket.Fill the bottom 4" or so with sand, then the next 4-6" with gravel.Set the bucket on top of the gravel, and fill around the bucket with more gravel (Bucket should be empty but for maybe an inch or so of gravel on the lip holding it down)Set the sump pump in the bucket and run the pipe out of the crawl space.This setup will catch and pump an AMAZING amount of water.

The enclosure must not have gaps greater than 4 inches in diameter and must be void of anything that a child under five years old can use as a hand or foothold.

Galvanized rusts from the inside and the pipes inside diameter decreases over time impacting the water flow. - The same issue with pipe material goes for water pipes inside the house.

I think it was 5 or 7 years... so some of that 24"+ diameter clear pine should help offset some of the expense of my other planned development efforts on that lot.

The recommendation is 53 new 12" diameter concrete poured piers.

Earth bag dome 20 ft diameter with bamboo trunk and palm leaf roof, if I built totally by myself and used lumber and dirt from my own land, may cost $5,000 max,.  

Our back flow valve was installed in our basement floor replacing an old small diameter P-trap under the flooring that would hold sludge.