Clean Water Rule coverage would produce a 2:1 ratio of benefits to costs in implementation after the final rule. Implementation of the rule will discern any implications for environmental justice communities, though it is clear that "meaningful involvement from minority, low-income, and indigenous populations, as well as other stakeholders, has been a cornerstone of development of the final rule." Specific details that have been clarified by the rule are outlined below. A tributary, or upstream water, must show physical features of flowing water – a bed, bank, and ordinary high water mark – to warrant protection. The rule provides protection for headwaters that
Littlewood's rule rejected. If a continuous distribution formula_14 is used to model the demand, then formula_15 can be calculated using what is called "Littlewood’s rule": This gives the optimal protection limit, in terms of the division of the marginal revenue of both classes. Alternatively bid prices can be calculated via Littlewood's model is limited to two classes. P. Belobaba developed a model based on this rule called Expected marginal seat revenue, abbreviated as EMSR, which is an formula_17-class model Littlewood's rule The earliest Revenue Management model is known as "Littlewood’s rule", developed by Ken Littlewood while working at British Overseas Airways Corporation.