Engineering Forms &
Reference Materials

SUPPLEMENTAL DOCUMENTS for
City Plan Review & Permitting

• Affidavit of Responsibility 
• Design Exception Request Form
• Early Grading Agreement
• Engineering Services Agreement
• General Notes
• HB2306 Developer Checklist
• Materials Testing Requirements
• Mode of Delivery Form
• Plan Submittal Checklist
• Proportionality Analysis
• SDC Credit Request Form
• Transportation Impact Study Guidelines
• Tree List (Urban Forestry)
• Trail Development Handbook

HELPFUL LINKS to
External Sources

• Clackamas County GIS
• Clackamas County Transportation Engineering Department
• Clackamas County Roadway Standards
• Clackamas County Storm Water Management
• Clackamas County Septic Program
• Clackamas Fire District #1 – Access and Water Supply Plan Review Submittal
• DEQ 1200-C Permit Application
• Oregon Utility Notification Center
• ODOT Standard Specifications
• WES (Water Environment Services) Home Page
• WES Erosion Prevention Planning and Design Manual
• WES Erosion Prevention and Sediment Control Home Page
• WES Surface Water Management Program Home Page
• WES Stormwater Standards