Hoy’s Marine Site Newport, Oregon Combined Preliminary Assessment/ Site Inspection TDD: 98-07-0011 Contract: 68-W6-0008 September 1999 Region 10 START Superfund Technical Assessment and Response Team Submitted To: David Bennett, Task Monitor U.S. Environmental Protection Agency 1200 Sixth Avenue Seattle, WA 98101 HOY’S MARINE SITE NEWPORT, OREGON COMBINED PRELIMINARY ASSESSMENT/SITE INSPECTION REPORT TABLE OF CONTENTS Section Page 1. INTRODUCTION ............................................................ 1-1 2. SITE BACKGROUND ........................................................ 1-1 2.1 SITE LOCATION .................................................. 1-1 2.2 SITE DESCRIPTION ............................................... 2-2 2.3 SITE OWNERSHIP HISTORY ........................................ 2-2 2.4 SITE OPERATIONS AND WASTE CHARACTERISTICS .................. 2-3 2.5 SITE CHARACTERIZATION ......................................... 2-4 2.5.1 Previous Investigations ......................................... 2-4 2.5.1.1 SRH Associates, Inc. Inspection ............................ 2-4 2.5.1.2 GEM Investigation ..................................... 2-4 2.5.1.3 MFA Inspection ........................................ 2-6 2.5.1.4 ODEQ Inspections ...................................... 2-6 2.6 SUMMARY OF PA/SI INVESTIGATION LOCATIONS .................... 2-8 3. FIELD ACTIVITIES AND ANALYTICAL PROTOCOL .............................. 3-1 3.1 SAMPLING METHODOLOGY ....................................... 3-1 3.1.1 Surface Soil and Grit Samples ................................... 3-2 3.1.2 Intertidal Sediment Samples ..................................... 3-2 3.1.3 Subtidal Sediment Samples ...................................... 3-2 3.2 ANALYTICAL PROTOCOL .......................................... 3-2 3.3 GLOBAL POSITIONING SYSTEM .................................... 3-3 3.4 INVESTIGATION-DERIVED WASTE .................................. 3-3 4. QUALITY ASSURANCE/QUALITY CONTROL ................................... 4-1 4.1 SATISFACTION OF DATA QUALITY OBJECTIVES ...................... 4-2 4.2 QUALITY ASSURANCE/QUALITY CONTROL SAMPLES ................. 4-2 4.3 PROJECT-SPECIFIC DATA QUALITY OBJECTIVES ..................... 4-2 4.3.1 Precision ................................................... 4-2 4.3.2 Accuracy ................................................... 4-2 4.3.3 Completeness ................................................ 4-3 4.3.4 Representativeness ............................................ 4-3 4.3.5 Comparability ............................................... 4-3 4.4 LABORATORY QUALITY ASSURANCE/QUALITY CONTROL PARAMETERS .................................................... 4-3 4.4.1 Holding Times ............................................... 4-3 4.4.2 Laboratory Blanks ............................................ 4-3 4.4.3 Trip Blanks ................................................. 4-4 4.4.4 Rinsate Blanks ............................................... 4-4 10:\T:\98070011\S476 iii TABLE OF CONTENTS (CONTINUED) Section Page 5. ANALYTICAL RESULTS REPORTING AND BACKGROUND SAMPLES .............. 5-1 5.1 ANALYTICAL RESULTS EVALUATION CRITERIA ..................... 5-1 5.1.1 Sample Results Reporting ...................................... 5-2 5.2 BACKGROUND SAMPLES .......................................... 5-2 5.2.1 Background Surface Soil ....................................... 5-2 5.2.1.1 Sample Locations ...................................... 5-2 5.2.1.2 Sample Results ........................................ 5-2 5.2.2 Background Intertidal Sediment .................................. 5-3 5.2.2.1 Sample Locations ...................................... 5-3 5.2.2.2 Sample Results ........................................ 5-3 5.2.3 Background Subtidal Sediment ................................... 5-3 5.2.3.1 Sample Locations ...................................... 5-3 5.2.3.2 Sample Results ........................................ 5-3 6. POTENTIAL SOURCES ...................................................... 6-1 6.1 CONTAMINATED SOIL SOURCES ................................... 6-1 6.1.1 Former Waste Oil Tank Area .................................... 6-1 6.1.1.1 Sample Locations ...................................... 6-1 6.1.1.2 Sample Results ........................................ 6-1 6.1.2 Former Waste and Metal Shaving Disposal Area ..................... 6-2 6.1.2.1 Sample Locations ...................................... 6-2 6.1.2.2 Sample Results ........................................ 6-2 6.1.3 Soil in Front of Main Shop ...................................... 6-2 6.1.3.1 Sample Location ....................................... 6-2 6.1.3.2 Sample Results ........................................ 6-2 6.1.4 Paint Storage Shed Area ........................................ 6-2 6.1.4.1 Sample Locations ...................................... 6-2 6.1.4.2 Sample Results ........................................ 6-3 6.1.5 Spent Sandblasting Grit Storage Shed and Diesel AST Area ............. 6-3 6.1.5.1 Sample Locations ...................................... 6-3 6.1.5.2 Sample Results .................................. 6-3 6.2 SPENT SANDBLASTING GRIT ...................................... 6-4 6.2.1 Sample Location ............................................. 6-4 6.2.2 Sample Results .............................................. 6-4 7. MIGRATION/EXPOSURE PATHWAYS AND TARGETS ............................ 7-1 7.1 GROUNDWATER MIGRATION PATHWAY ............................ 7-1 7.2 SURFACE WATER MIGRATION PATHWAY ........................... 7-1 7.2.1 Pathway Description .......................................... 7-1 7.2.2 Targets .................................................... 7-2 7.2.4 Sample Locations ............................................ 7-3 7.2.5 Intertidal Sediment Sample Results ................................ 7-3 7.2.6 Near-shore Subtidal Sediment Sample Results ....................... 7-4 7.2.7 Off-shore Subtidal Sediment Samples .............................. 7-5 7.3 SOIL EXPOSURE PATHWAY ........................................ 7-5 10:\T:\98070011\S476 iv 7.4 AIR MIGRATION PATHWAY ........................................ 7-6 8. SUMMARY AND CONCLUSIONS .............................................. 8-1 8.1 SOURCES ........................................................ 8-1 8.2 TARGETS ........................................................ 8-1 8.3 CONCLUSIONS ................................................... 8-2 9. REFERENCES .............................................................. 9-1 APPENDICES A PHOTOGRAPHIC DOCUMENTATION B GPS DATA C DATA VALIDATION MEMORANDA AND ANALYTICAL RESULTS 10:\T:\98070011\S476 v LIST OF TABLES Table Page 2-1 Ownership and Operator History ............................................ 2-10 2-2 Summary of 1996 GEM Sample Results ....................................... 2-11 2-3 List of Previous ODEQ Investigations ......................................... 2-13 2-4 1997 ODEQ Sediment Sample Analytical Results ............................... 2-14 3-1 Sample Collection and Analytical Summary ...................................... 3-4 6-1 Surface Soil and Spent Grit Samples . .......................................... 6-5 6-2 Grit Sample Results ....................................................... 6-9 7-1 Groundwater Drinking Water Populations within a 4-Mile Radius ..................... 7-7 7-2 Intertidal Sediment Sample Results ............................................ 7-8 7-3 Subtidal Sediment Sample Results ............................................ 7-10 7-4 Off-shore Subtidal Sediment Sample Results ................................... 7-12 7-5 Resident Population within 1-Mile Radius ..................................... 7-14 7-6 Populations and Wetland Acreage Within a 4-Mile Radius .......................... 7-15 8-1 Comparison of Maximum Sediment Concentrations to Sediment Quality Benchmarks ...... 8-4 10:\T:\98070011\S476 vi LIST OF FIGURES Figure Page 2-1 Site Vicinity Map ........................................................ 2-15 2-2 Site Location Map ....................................................... 2-16 3-1 Surface Soil and Intertidal Sediment Sample Location Map ......................... 3-10 3-2 Subtidal Sediment and Wetland Intertidal Sediment Sample Location Map .............. 3-11 7-1 4-Mile Radius Map ....................................................... 7-16 7-2 15-Mile Map ............................................................ 7-17 7-3 Tracer Analyte Concentration Trends Nearshore Subtidal Sediment Samples ............ 7-18 10:\T:\98070011\S476 vii LIST OF ACRONYMS Acronym Definition %R percent recovery AC adjusted concentration B Detected below the Contract Required Detection Limit but equal to or greater than the instrument detection limit bgs belowground surface AST aboveground storage tank CERCLA Comprehensive Environmental Response, Compensation, and Liability Act cfs cubic feet per second CLP Contract Laboratory Program CRDL/CRQL Contract Required Detection/Quantitation limit DQOS Data Quality Objectives DL Detection Limits E & E Ecology & Environment, Inc. EPA Environmental Protection Agency GPS global positioning system H High bias IDW investigation-derived waste J Estimated concentration K Unknown bias L Low bias LCS Laboratory Control Sample µg/kg micrograms per kilogram µg/L micrograms per liter mg/kg milligrams per kilogram MS/MSD matrix spike/matrix spike duplicate NPL National Priorities List ODEQ Oregon Department