4. Solid biomass which is wood or wholly derived from wood (except energy crops) meets the land criteria if—E+W+S
(a)at least 70% of the consignment was obtained from a sustainable source;
(b)where more than one consignment is used in a quarterly period, at least 70% of the solid biomass used was obtained from a sustainable source; or
(c)the solid biomass was certified under an environmental quality assurance scheme which ensures that at least 70% of the solid biomass certified by that scheme was obtained from a sustainable source.