08 Excavation and Backfill for Structureshttps://www.codot.gov/business/designsupport/2019-and-2012-m-standards/2012-m-standard-plans/copy_of_2012-m-standards-plans/2012-m-standards-pdfs/08-excavation-and-backfill-for-structureshttps://www.codot.gov/@@site-logo/siteLogo.png