From the California Invasive Plant Council: Two recent prevention BMP manuals have been published, one for land managers and one for transportation and utility managers.
PDFs of these documents are available for download for free at:
Transportation and Utility Managers
Cal-IPC also has lots of print copies of the land manager manual that they’d like to get out beyond California. They’re charging $10 each to cover printing costs. Please let them know if you want some printed copies. Please contact the sender, Doug Johnson, with any questions: firstname.lastname@example.org