36 CFR § 9.62
When will the NPS grant a temporary access permit?
November 4, 2020
If the Regional Director determines that your proposed reconnaissance surveys will not result in surface disturbance, except for minimal disturbance necessary to perform required surveys, the Regional Director will issue you a temporary access permit within 30 days after receipt of a complete application, unless the Regional Director notifies you that additional time is necessary to evaluate or process your application.