On Google Data center operations' Privacy Page you can request and collect all the privacy and GDPR related information that Google Data center operations is providing.
The privacy policy by is a legal document or statement that discloses how Google Data center operations gathers, uses, discloses, and manges their customers' data.
The basis for Design, LLC sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.