odorize

That final rule was noteworthy partly because of what was not in it: a proposal to clarify when a pipeline has to odorize a lateral line whose length is 50% in a Class 1 or Class 2 location.

Upstream operators are not typically required to odorize, but safety regulations increase along the logistics chain toward consumers.

There is nothing in the regulations that tells how to odorize, when to odorize, or when to monitor.

It is also the only producer, which odorizes its product with mercaptan as a consumer safety measure.