Pricing Installation of Stack Pipe at Seepage Pits

Location is Suffolk County New York, USA.
Two seepage pits used in septic system. Depth might be somewhat lower than normal because the waste main line is below the basement cement floor in a ranch type house. Foundation wall is approximately 6 feet tall and extends about 3 feet above grade level.
Water table is at 15 feet.
Any idea as to typical cost for installation of stack pipe for two pits ?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.