Oregon

Wellhead Protection Program

Guidance Manual

TABLE OF CONTENTS

Oregon's Wellhead Protection Process Diagram (Use Your Browser's Back Arrow to Return)

Chapter 1 GENERAL INFORMATION (Topic Listing)

Chapter 2 OREGON'S WELLHEAD PROTECTION RULES(Topic Listing)

Chapter 3 PROCEDURE FOR IMPLEMENTATION(Topic Listing)

Chapter 4 REFERENCES AND ADDITIONAL RESOURCES(Topic Listing)

Chapter 5 WELLHEAD PROTECTION GLOSSARY(Topic Listing)

APPENDICES

LIST OF TABLES

LIST OF FIGURES

Acknowledgments

Acronyms
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Chapter 1 GENERAL INFORMATION Return to: TABLE OF CONTENTS

• Need for Wellhead Protection
• Federal Requirements
• Program Development
• Statutory Authorities
  • Department of Environmental Quality (DEQ)
  • Oregon Health Division (OHD)
• Overview of Implementation

• How Do We Develop a Wellhead Protection Plan?
• What Are The Incentives for State Certification?
• Roles and Responsibilities
  • Department of Environmental Quality (DEQ)
  • Oregon Health Division (OHD)
  • Water Resources Department (WRD)
  • Department of Land Conservation and Development (DLCD)
  • Department of Agriculture (ODA)
  • Department of Economic Development (DED)
  • Department of Transportation (DOT)
  • Oregon State Fire Marshal (SFM)
  • Responsible Management Authorities (RMA)
• Signatories and Jurisdictional Issues

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Chapter 2 WELLHEAD PROTECTION RULES Return to: TABLE OF CONTENTS

• DEQ's and OHD's Rules
  • DEQ - OAR 340-40-140 through 340-40-210
  • OHD - OAR 333-61-020, -050, -057, and -065

Chapter 3 PROCEDURE FOR IMPLEMENTATION Return to: TABLE OF CONTENTS

Step 1 Initiating Wellhead Protection in Your Community

• Optional Pre-Plan Assessment

Step 2 Assemble Team

Step 3 Delineate Protection Area

• Overview
• Delineation Basics
  • What Can Water Systems Do Now?
  • Request for Proposal
• Delineation Method Requirements
  • Sources of Information
  • Parameters Common to All Delineation Methods
  • Calculated Fixed Radius
  • Conceptual Model Development
  • Porous Media Assumption
  • Analytical Techniques with Hydrogeologic Mapping
  • Numerical Methods
  • Evaluation of Delineation Techniques
• Factors That May Influence The Delineated Area in The Future
  • Susceptibility Analysis
• Delineation References

Step 4 Inventory Potential Sources of Contamination

• Groundwater Contaminants
• Recruiting Volunteers
• Methodology
• Inventory References

Step 5 Develop Management Approach

• Groundwater Protection Basics
• Methodology
  • Commercial/Industrial Management Options
  • Agricultural/Rural Management Options
  • Residential/Municipal Management Options
  • Miscellaneous Management Options

Step 6 Develop Contingency Plan

Step 7 Planning for Future Public Water System Needs

• New Groundwater Source

Step 8 Submit Plan to DEQ for Certification

• Suggested Outline of Wellhead Protection Plan Report
  
• Certification of Your Plan
  
• Update Procedure
  
• Decertification Procedure
  
  

Chapter 4 REFERENCES AND ADDITIONAL RESOURCES
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Chapter 5 WELLHEAD PROTECTION GLOSSARY
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APPENDICES Return to: TABLE OF CONTENTS

Appendix A Examples of Delineation Methods
Appendix B Agency Resources List
Appendix C Examples of Inventory Forms/Maps
Appendix D Federal and State Mandates Related to Groundwater
Appendix E Example Ordinance for Creating a Wellhead Protection Area District
Appendix F Introduction to Pollution Prevention
Appendix G Sample Letter of Property Owners/Operators & Examples
Appendix H Household Hazardous Waste Fact Sheet & Oregon's Waste Reduction Assistance Program
Appendix I Example Contingency Plan Response

LIST OF TABLES Return to: TABLE OF CONTENTS

• Table 1-1 Contaminants and Maximum Levels
  
• Table 1-2 Contamination Response vs. Wellhead Protection Plan Costs
  
• Table 2-1 Index of Information on Rule Requirements
  
• Table 3-1 Input Requirements for WHPA Models
  
• Table 3-2 Potential Sources of Groundwater Contaminants
  
• Table 3-3 Ranking the Potential Contaminant Sources
  
• Table 3-4 General Management Tools Available for the Wellhead Protection Area
  
• Table 3-5 General Best Management Practices (BMPs)
  
• Table 3-6 Agricultural/Rural On-Farm Assessments
  
• Table 3-7 Agricultural/Rural Best Management Practices Groundwater Protection Assessments
  
• Table 3-8 Agricultural Principles, Strategies, and Example BMPs for Groundwater Protection
  

LIST OF FIGURES Return to: TABLE OF CONTENTS

• Figure1-1 Examples of Groundwater Contamination Sources
  
• Figure 1-2 Overview of Implementation
  
• Figure 3-1 Zone of Contribution (ZOC) or Capture Zone, Zone of Influence (ZOI) and Wellhead Protection Area (WHPA)
  
• Figure 3-2 Delineation Flow Chart
  
• Figure 3-3 Components of the Calculated Fixed Radius Equation
  
• Figure 3-4 Effect of Fracture Anisotropy on the Orientation of the Zone of Contribution to A Pumping Well
  
• Figure 3-5 Wellhead Protection Delineation Using Hydrogeologic Boundaries
  
• Figure 3-6 Modification of Capture Zone of Primary Production Well (P) as A Result of Proximal Well
  
• Figure 3-7 Aquifer Susceptibility Analysis
  
• Figure 3-8 Example of Using the Susceptibility Analysis in Wellhead Protection Strategies
  
• Figure 3-9 Example Inventory Map
  
• Form 3-1 Wellhead Protection Inventory Form  

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