Unless otherwise allowed (see [[#5.4|5.4]] and [[#6.17|6.17]]), the heating fuel oils shall consist of conventional hydrocarbons (i.e. petroleum-derived from natural gas liquid condensates, crude oil, heavy oil, shale oil and oil sands), synthetic hydrocarbons (see [[#9.13|9.13]]) or mixtures of conventional and synthetic hydrocarbons and may include naturally occurring non-hydrocarbons. <br> | Unless otherwise allowed (see [[#5.4|5.4]] and [[#6.17|6.17]]), the heating fuel oils shall consist of conventional hydrocarbons (i.e. petroleum-derived from natural gas liquid condensates, crude oil, heavy oil, shale oil and oil sands), synthetic hydrocarbons (see [[#9.13|9.13]]) or mixtures of conventional and synthetic hydrocarbons and may include naturally occurring non-hydrocarbons. <br> |