The University of California has a number of agreements with publishers for Open Access discounts. Not all of these include LBNL (Springer-Nature, for example, does not), but most of them do. Further information is available at the link below. Contact publications@lbl.gov or library@lbl.gov for assistance. Note that in some cases further information will need to be provided by campus librarians or the publishers themselves.
https://osc.universityofcalifornia.edu/for-authors/open-access-publishing-at-uc/publishing-discounts/
in the bottom right or navigate to