On July 1, 2026, the Ventura Countywide Stormwater Quality Management Program released Revision 1 of the 2025 Technical Guidance Manual (TGM). This revision includes minor updates and corrections to various equations, figures, and narrative text within the document. A detailed summary of all revisions is provided in the Revision Tracker located on PDF page 3 of the 2025 TGM – Revision 1 document located here https://vcstormwater.org/publications/manuals/tech-guide-manual/.
