Sticking to the low end of government estimates, the National Resources Defense Council says there may be no more than 3.2 billion barrels of economically recoverable oil in the coastal plain of ANWR.

美国国家资源保护委员遵照政府预估范围的下限，称在国家野生动物保护区的沿海平原上，经济上可采石油可能不超过32亿桶。

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Very often, energy firms will search for as much crude as they believe economically recoverable at the current or projected price of oil.

FORBES: America's (Un)Peak Oil