The California Environmental Quality Act requires that mitigation monitoring and reporting programs (MMRPs) be adopted prior to project approval.

TRA typically prepares the MMRP as a part of preparing the IS/MND or EIR. These plans specify mitigation measures, responsible parties, and expected work products in order to demonstrate that mitigation proposed during environmental review is actually implemented.

TRA also has experience in monitoring mitigation activities, including operational compliance at quarries, restoration work at housing and public facility developments, and special-status plant and animal species monitoring in various habitat settings.