You can find a wealth of resources related to the summer internship search process here, including:
GHD Summer Internship Guide
Statement of Work (SOW) Form Template
ACH Enrollment Form (Electronic Funds Transfer Authorization)
W-9 Tax Form (for U.S. Citizens) - use your SSN as your Tax ID number
Substitute W-8 BEN/BEN-E Tax Form (for International Students)
January 12th, 2023 - Internship Kick-Off Session