Stormwater Management Plan Document Library

The Stormwater Management Plan (SWMP) program implementation requires numerous codes, ordinances policies, procedures, guidance manuals, checklists, forms, mapping, and other related documents. Throughout the city's current SWMP, the relevant documents are noted within each program category or best management plan (BMP). The referenced documents have been compiled into this SWMP document library.

Please note that this page is continually being updated. You may reach out to Audrey Meeker to request information or ask for assistance at 971-204-4656 or via email.

Phase 1 Municipal Separate Storm Sewer System (MS4) Permit SWMP Requirements

A.1.a. Public Education & Outreach

• Public Education and Outreach Strategy (PDF)

A.1.b. Public Involvement & Participation

• Public Education and Outreach Strategy - SWMP BMP Element 4 (PDF)
• Public Involvement and Participation Approach - SWMP BMP Element 5 (PDF)
• Public Education and Outreach Strategy (PDF)

A.1.c. Illicit Discharge Detection & Elimination (IDDE)

• Illicit Discharge Detection and Elimination Standard Operating Procedure (SOP) (PDF)
• Oregon City Municipal Code (OCMC) - IDDE Ordinances
  • Chapter 8
    • 8.08.020 - Nuisances affecting health
    • 8.08.050 - Enforcement
  • Chapter 13
    • 13.12 - Stormwater Management
    • 13.12.150 - Penalties and Enforcement
• MS4 Mapping and additional mapping information can be provided upon request
• Recommended Illicit Discharge Detection and Elimination YouTube Videos (Pablo Martos 2022)
  • Module 1: MS4 Permit Compliance Workshop (17 minutes, 43 seconds)
  • Module 2: MS4 Permit Compliance Workshop (18 minutes, 01 second)
  • Module 3: MS4 Permit Compliance Workshop (44 minutes, 01 second)
• Illicit Discharge Detection and Elimination Program Procedures
  • Complaint Form and Tracking
  • Complaint investigation and response and enforcement procedures; reference Illicit Discharge Detection and Elimination SOP (PDF) section 3.1.3
  • Spill Response Plan (PDF) - Spill prevention, containment and response procedures and processes
• Dry Weather Field Screening Program; reference the Illicit Discharge Detection and Elimination SOP (PDF) for the following:
  • Priority locations
  • Field screening and analysis procedures
  • Pollutant parameter action level
  • Lab Analysis
• Municipal Staff Training Strategy (PDF)

A.1.d. Construction Site Runoff Control

• Erosion and Sediment Control Ordinance was adopted by Resolution 15-14
• Addendum to the Clackamas County Erosion Prevention and Sediment Control Planning and Design Manual, December 2008 (PDF)
• NPDES MS4 Phase I Permit - Clackamas Group
• Erosion and Sediment Control Plan requirements:
  • Erosion and Sediment Control
  • Stormwater and Grading Design Standards
  • Addendum to the Clackamas County Erosion Prevention and Sediment Control Planning and Design Manual, December 2008 (PDF)
• Construction Site Inspection Procedures
  • City Code 17.47 - Erosion and Sediment Control
  • City Code 13.12 - Stormwater Management
  • Minimum triggers: Within the boundaries of the city, any grading or soil disturbance associated with a development activity that disturbs 1,000 square feet or greater is required to obtain an erosion and sediment control (ESC) permit from the City. This requirement is consistent with Metro's Urban Growth Management Plan, Title 3 and the City's National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit
  • Inspection Documentation and Follow-up Procedures (PDF) - Chapter 6 of the Erosion and Sediment Control Planning and Design Manual (PDF)
• Erosion and Sediment Control Escalating Enforcement and Response Procedures (PDF)

A.1.e. Post Construction Site Runoff for New Development & Redevelopment

• Post-Construction Stormwater Management Requirements - Stormwater and Grading Design Standards Manual (PDF)
  • Low Impact Development (LID)/Green Stormwater Infrastructure (GI) Strategy - 2.2.4 Stormwater Management Strategy, Page 38 (PDF)
  • Design Standards for Retention and Water Quality - Chapter 4 (PDF)
  • Water Quality Benefit Offset Program - 1.4.3 Stormwater Site Design Incentives (PDF)
• Procedures for Stormwater Plan Review and Approval - Chapter 1 (PDF)
• Internal Checklists for erosion and Sediment Control Plan Reviews, Land Use Plan Review, and Engineering Design Submittal Plan Reviews:
  • Engineering Development Services Checklists
  • City of Oregon City Engineering Plan Review Checklist for Public Works Construction (PDF)
  • City of Oregon City Engineering Stormwater Review Checklist for Public Works Construction (PDF)
• Long Term Operations and Maintenance (O&M) Procedures Associated with Structural Stormwater Controls - Chapter 8 (PDF)
• Staff Training and Education Strategy (PDF)

A.1.f. Pollution Prevention & Good House Keeping for Municipal Operations

• Procedures for Inspection, Maintenance and Cleaning of the MS4 (PDF) (CB, inlets, water quality facilities, pipes, etc.)
• Strategy for Pollution Prevention in Municipal Facilities and Operations
  • O&M Roads and associated storm-water controls, ditches, pipes and bridges and procedures to control the application
    • Standard Operating Procedure for Inspection and Maintenance of Stormwater Infrastructure (PDF)
• Winter Maintenance and Operations Program (for public roads)
  • Winter Weather Plan (PDF)
  • Winter Weather Response Map (PDF)

A.1.g. Industrial & Commercial Facilities

• Industrial/Commercial Facility Strategy (PDF)
• Municipal Staff MS4 Training Strategy - August 2022 (PDF)