The 2021 Permit allowed the development of a Coordinated Integrated Monitoring Program (CIMP). A CIMP specifies approaches for meeting the objectives of the Permit’s Monitoring Reporting Program and allows water quality monitoring for Regional Permit and TMDL (Total Maximum Daily Load) activities to be combined to eliminate duplicative or wasteful efforts.
The Ventura County Permittees worked together to develop a CIMP to detail the receiving water monitoring, stormwater outfall-based monitoring, non-stormwater outfall-based monitoring, and all TMDL monitoring requirements, either by incorporation or by reference. The CIMP details the monitoring approach, including monitoring locations, constituents, and frequency.
The CIMP was submitted to the Regional Board by the due date of September 11, 2023. Revisions to the CIMP in response to Regional Board comments were submitted on April 15, 2024, June 16, 2024, and January 27, 2025. The CIMP was approved on May 12, 2025. A request to add a missing footnote for the monitoring tables was approved on December 23, 2025, and a revised CIMP incorporating this change was submitted in January 2026. Monitoring transitioned from 2010 Permit requirements to the CIMP during the 2025-2026 monitoring year.