| While removing flowlines at the CARRAWAY-MCCALLAN-64S64W 21NWSE (Location ID: 320743), legacy suspected soil impacts were observed. Vertical and horizontal definition is being pursued with conventional excavation, and clearance samples will be collected from the bottom and sidewalls of the trench excavation. Additionally, a previously unmarked 24 inch diameter PVC pipe with a manhole cover was observed adjacent to the former southern crude oil tank, buried under 18 inches of soil. The purpose of the pipe, depth, and type of liquid contents are unknown at this time. A previous spill at this site (Spill/Release Point ID: 159786, Document number: 400884456) in which a valve on the condensate tank cracked and released both condensate and produced water out of containment, was closed August 2015, but contains no mention of the large diameter pipe. |