National Park Service policy allows waivers for educational and scientific groups engaged in the study of resources specifically related to the park. These waivers can be granted to such groups if it is determined that the proposed visit is not primarily recreational in nature.
Fee waivers must be applied for at least one month prior to your planned visit. This link provides the guidelines and materials you will need to include with your application
Complete an Educational Fee Waiver Application and FAX it to (760) 786-2217.