[Imports] Potential Import of Addresses for Thurston County, WA, USA

[Raven King]

Hello:

I discovered that Thurston County, WA publishes a database of addresses
stored as gps pins inside a shape file. 
The data can be found here:
https://gisdata-thurston.opendata.arcgis.com/datasets/thurston-address-points-tcomm?geometry=-122.915%2C47.023%2C-122.914%2C47.023

The license can be seen where it has a link labeled "Custom License"
next to a picture of a lock. I didn't see anything in there that would
prohibit our use of this, but extra eyes are needed. 

The database has 128,639 addresses. My goal would be to import the
entirety of it into OSM, as Thurston county has very few addresses in
OSM. They would be imported as points, since the database has them
stored as points.

The caveats I see are as follows:
* The database probably has some addresses that are wrong. While
everything I could verify has been correct, I only checked about 100
addresses. 
* There may be some overlap with buildings that already had addresses
entered. Since Thurston County has very few addresses in OSM, I don't
see this being a huge issue.

I have never done an import, and I do not know what the process for
both consensus and the actual import would be.

Sincerely,
Raven King