Sorry for late reply ka, PSP confirm information as following
1. Result of all item test for B-100 and Ethanol since 2013 never off spec . (Refer e-mail Khun Suwimol)
2. PSP follows procedure to drain bottom of every compartment before pump to storage tank.
3. PSP have never tested Ethanol content.
Please contact me if you need more information. Thank you ka.