Design and Construction Standards and Specifications

Appendix A:  Standard Details

Use the links below if you wish to open the PDF for a specific series:

• 300 Series
• 400 Series
• 500 Series
• 600 Series
• 700 Series
• 900 Series

Appendix B:  Surface Water Design Manual
You may use the previous version of the Surface Water Design Manual if your project meets both of these criteria:

• Your complete project application was accepted prior to December 30, 2016; and
• Your project will be under construction prior to January 1, 2022.

Appendix C:  General Notes

Appendix D:  Maintenance Standards (Modified Appendix A of King County Surface Water Design Manual)

Appendix E: Sample Forms

Appendix F: Contaminated Soil and Groundwater Protocol