2 Miss. Code. R. 1-4-08-113.04
All filler pipes for petroleum bulk storage tanks and retail station storage tanks shall be identified by painting a sign on the intake pipe cap or within (6) inches thereof in lettering not less than (2) inches in height and not less than one-fourth (1/4) inch in width the following: for B100 biodiesel, the lettering "B100"; for biodiesel blends, the lettering "BXX" (XX indicating blend percentage); for 100% biomass-based diesel, the lettering "BBD100"; for biomass-based diesel blends, the lettering "BBDXX" (XX indicating blend percentage). Nothing in this section shall apply to bulk storage tanks located at marine or pipeline terminals, nor prohibit "color coding" in addition to the lettering, where desired.
2 Miss. Code. R. 1-4-08-113.04