A PLIP A was undertaken on 16/09 finding faulty dipping to be the reason for the gain performance. Site are currently using a temporary dipstick. Tank is a low-mid seller that sits in the upper terminal for L/G % and the lower terminal for volume. The Analyst has been asked if new dipsticks are now being used and the date they were first used. Follow up email sent on the 05/01/16. WSM Report was also requested for December which was received on the 06/01/15 and data was corrected for all tanks.