You are here: Home Business Center Design & Construction Project Support The 2019 and 2012 M Standards 2019 M Standard Plans 2019 Project Special Details D-420-1 - Media Filter Drain D-420-1 - Media Filter Drain https://www.codot.gov/business/designsupport/2019-and-2012-m-standards/2019-m-standards-plans/2019-project-special-details/d-420-1 https://www.codot.gov/@@site-logo/siteLogo.png D-420-1 - Media Filter Drain D-420-1 - Media Filter Drain.dgn D-420-1 - Media Filter Drain
D-420-1 - Media Filter Drain https://www.codot.gov/business/designsupport/2019-and-2012-m-standards/2019-m-standards-plans/2019-project-special-details/d-420-1 https://www.codot.gov/@@site-logo/siteLogo.png D-420-1 - Media Filter Drain D-420-1 - Media Filter Drain.dgn D-420-1 - Media Filter Drain