Final answer:
The Supremacy Clause of the United States Constitution will determine the outcome when there is a conflict between a federal EPA decision and a state law.
Step-by-step explanation:
When there is a direct conflict between a decision by a federal Environmental Protection Agency (EPA) administrator and a Hawaii state law, the Supremacy Clause of the United States Constitution will come into play. The Supremacy Clause states that federal law is the supreme law of the land and takes precedence over state law in certain situations. In this case, the decision by the EPA administrator, being a decision made by a federal agency, would generally supersede the Hawaii state law.
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