Thanks guys' It is a single story house and it is a vent. It is the drain and vent for the kitchen sink. There is a washer drain about 5 feet away but it has it's own vent. Both of which will be moved to new plumbing drain lines. The only other drains for the two bathrooms are 30 feet away at the other end of the house. So I should be able to remove it without effecting any other drains.
Thanks for the help
Thanks for the help