In article smV6g.4324$_c1.3146@fed1read05,
BTB wrote:

Did my BFR yesterday and while going over the local sectional, I noticed
something and asked the instructor about it.

It was a dashed blank line, labelled 'underground pipeline'.

Now I have to ask - why if it is underground, is it on the chart ? What
is the possible value of it being there ?

Homeland Security at work. We won't tell you what it is, just where it
is.
Just as the words "Nuclear Powerplant" have been removed, so have the
words "Underground Pipeline".