NS Conway yard many years ago. We were allowed a walk through of the turntable area. Answers to a few questions about oil/grease/dirt.
Note the oil absorbent material.
The existing turntable pit was a collect area for any oil or spilled fuel, piped to a treatment facility that removed all oil from any discharge water.
Turntable pit area. Lots of oil and grease.
There was a sander/ hand sander for the pit rail.
Hand sander, yellow.
Oil and fuel spill a major concern. Most oil and fuel spill was limited. This may be the largest spill that we saw. Note that this facility was removed/upgraded 5 or 6 years ago.
We modeled the hand sander.