| Tanks have not been in use recently at the 21A due to completions of wells on the location; instead, the wells were flowing through temporary seperators to temporary frac tanks. Once flowback activities ceased, tanks were put in production use once again. The following morning, the tanks were gauged as per routine procedure, and tank 83237 (containing condensate and produced water) was missing approximately 20 BBL. At that point, the wells were shut in. There is no visible above-ground leak. |