The California High-Speed Rail (CHSR) Authority has been issued California Endangered Species Act (CESA) Incidental Take Permits (ITP) for the Merced to Fresno and Fresno to Bakersfield sections of the CHSR project located in the Central Valley. The CHSR Authority oversees compliance with a myriad of environmental commitments required to avoid, reduce, and mitigate potential effects of the project on biological resources through environmental documents, including the EIR/EIS documents and state and federal permits. Focusing on the CESA ITP conditions of approval (COAs), pre-construction surveys, monitoring of resources, trapping, avoidance buffers, burrow/den excavations, and wildlife exclusion fencing are some examples of the measures implemented to address the minimization and full mitigations standard for state-listed species covered in the permits. These measures have resulted in various levels of effectiveness compared to the effort involved in implementation. The extensive linear nature of the CHSR project has been a factor in COA effectiveness, as well as the long timeline, among other factors. This presentation explores the effectiveness of some of the measures intended to minimize and fully mitigate the take of covered species on the CHSR.