If you are working with ten 1L cultures, this does not qualify as large scale. All 10L must be in a single container to qualify as large scale.
Additional requirements need to be addressed when working with large scale cultures. See Appendix K of the NIH Guidelines for details (https://osp.od.nih.gov/wp-content/uploads/NIH_Guidelines.html).
Still have questions? Call the Office of Biological Safety (OBS) at 608-263-2037. We are happy to help!