PRELIMINARY ASSESSMENT GRANT WAREHOUSE RESIDENTIAL AREA Near 3368 NE Martin Luther King, Jr. Blvd. Portland, Multnomah County, Oregon EPA ID No. ORN June 20, 2013 Prepared by: Sarah Miller Site Assessment Specialist Oregon Department of Environmental Quality Prepared for: Joanne LaBaw (M/S ECL-112) Assessment & Brownfields Unit EPA Region 10, Suite 900 1200 Sixth Avenue, Seattle, WA 98101 GENERAL SITE DATA CERCLIS No.: ORSNF0012090 Site Name: Grant Warehouse Areawide Site Address: near 3368 NE Martin Luther King, Jr. Blvd. Portland, Oregon County: Multnomah County Legal Description: Township 01N, Range 1E, (Willamette Meridian) Section 26bb Tax lots: 4003; 4004; 4005; 4006; 3900; 1800; 1900; 2000; 2100; Latitude: North 45.5477 decimal degrees Longitude: West -122.6611 decimal degrees Congressional District: Oregon’s 3rd District Current Owner(s) Various residential properties Operator(s): inactive-(formerly a metallurgical laboratory) Site Contact(s): Portland Development Commission/ City of Portland Housing Authority Directions to site: The site is located on the east side of NE Martin Luther King, Jr. Blvd between NE Ivy St at NE Cook St. Portland, OR Description of Surrounding Properties and Features: See Section 2.1 Ownership History: See Section 2.2 Grant Warehouse Areawide June 20, 2013 CERCLIS No. ORSNF0012090 Page i TABLE OF CONTENTS Section Page 1.0 INTRODUCTION ............................................................................................................................................................ 1 2.0 SITE DESCRIPTION, OPERATIONAL HISTORY, AND WASTE CHARACTERISTICS .................................. 2 2.1 SITE DESCRIPTION .......................................................................................................................................................... 2 2.2 OWNERSHIP AND OPERATIONAL HISTORY ..................................................................................................................... 2 2.3 SOURCE AREAS AND WASTE CHARACTERISTICS ............................................................................................................ 3 3.0 LIMITED SOIL SAMPLING METHODS AND RESULTS ....................................................................................... 4 3.1 SAMPLE COLLECTION METHODS AND RATIONALE ......................................................................................................... 4 3.2 LABORATORY ANALYTICAL METHODS .......................................................................................................................... 4 3.3 SOIL TESTING RESULTS AND DISCUSSION ...................................................................................................................... 4 4.0 GROUNDWATER PATHWAY ..................................................................................................................................... 8 4.1 REGIONAL GEOLOGY AND HYDROGEOLOGY .................................................................................................................. 8 4.2 SITE GEOLOGY AND HYDROGEOLOGY ........................................................................................................................... 8 4.3 GROUNDWATER TARGETS .............................................................................................................................................. 8 4.3.1 Community Water Systems Information ............................................................................................................. 10 4.3.2 Domestic Well Information ................................................................................................................................ 10 4.3.3 Groundwater Resources ..................................................................................................................................... 10 4.4 GROUNDWATER CONCLUSIONS .................................................................................................................................... 10 5.0 SURFACE WATER PATHWAY ................................................................................................................................. 11 5.1 AREA SETTING ............................................................................................................................................................. 11 5.2 SURFACE RUNOFF AND PROBABLE POINT OF ENTRY (PPE) ......................................................................................... 11 5.3 SURFACE WATER TARGETS .......................................................................................................................................... 11 5.4 SURFACE WATER CONCLUSIONS .................................................................................................................................. 12 6.0 SOIL EXPOSURE PATHWAY .................................................................................................................................... 13 6.1 PHYSICAL CONDITIONS ................................................................................................................................................ 13 6.2 SOIL TARGETS .............................................................................................................................................................. 13 6.3 SOIL EXPOSURE PATHWAY CONCLUSIONS ................................................................................................................... 13 7.0 AIR MIGRATION PATHWAY ................................................................................................................................... 14 7.1 LIKELIHOOD OF A RELEASE .......................................................................................................................................... 14 7.2 AIR TARGETS ............................................................................................................................................................... 14 7.3 AIR MIGRATION PATHWAY CONCLUSIONS .................................................................................................................. 14 8.0 SUMMARY AND CONCLUSIONS ............................................................................................................................. 15 9.0 REFERENCES ............................................................................................................................................................... 16 Grant Warehouse Areawide June 20, 2013 CERCLIS No. ORSNF0012090 Page ii TABLE OF CONTENTS (CONTINUED) FIGURES Figure 1 – Site Location Map Figure 2 – Site Map Figure 3 – Site Radial Distance Map Figure 4 – Fifteen Mile Total Distance (TDL) From Probable Point of Entry (PPE) Map Figure 5- Site Map with XRF Property Monitoring Locations Figure 6 - Site Map with XRF Parking Strip Monitoring Locations APPENDICES Appendix A – Sanborn Maps, Aerial Photographs Appendix B – Sample Locations Appendix C – Analytical Report Appendix D – Select Well Logs, Well Log Summary Tables Appendix E –XRF Quality Assurance Appendix F- Endangered and Threatened Species Grant Warehouse Areawide June 20, 2013 CERCLIS No. ORSNF0012090 Page iii ACRONYMS bgs below ground surface cfs cubic feet per second CRB Columbia River Basalt DEQ/ODEQ Oregon Department of Environmental Quality DWP Drinking Water Program EPA U.S. Environmental Protection Agency gpm gallons per minute mg/kg milligrams per kilograms NFA No Further Action OAR Oregon Administrative Rules PA Preliminary Assessment PPE Probable Point of Entry RBC Risk-Based Concentration RDL Reported Detection Limit SHPO Oregon State Historic Preservation Office TDL Total Distance Limit XRF X-Ray Florescence Grant Warehouse Areawide June 20, 2013 CERCLIS No. ORSNF0012090 Page iv 1.0 INTRODUCTION Pursuant to a Cooperative Agreement (V-96089702-0) between the U.S. Environmental Protection Agency (EPA) and the Oregon Department of Environmental Quality (DEQ), the DEQ conducted a Preliminary Assessment (PA) at the Grant Warehouse Residential Area located near NE Fremont and NE Martin Luther King, Jr. Blvd. Portland, Oregon. PAs are intended generally to identify potential hazards at a site, identify sites that require immediate action, and to establish priorities for sites requiring in-depth investigations. The PA is based on readily available information about the site and is not a full investigation or characterization of the site. The PA includes the identification of primary and secondary targets as part of each pathway conclusion. A primary target is a target which has a relatively high likelihood of exposure to a hazardous substance. A secondary target is a target which has a relatively low likelihood of exposure to a hazardous substance. The PA was conducted to identify potential public health and environmental threats related to the site. The PA is based on data derived from the sources listed in the reference section of this report. The scope of the investigation includes review of available file information, interviews, a comprehensive target survey, and limited soil and groundwater sampling. Grant Warehouse Areawide June 20, 2013 CERCLIS No. ORSNF0012090 Page 1 2.0 SITE DESCRIPTION, OPERATIONAL HISTORY, AND WASTE CHARACTERISTICS Grant Warehouse in northeast (NE) Portland was used as an auto repair facility, a welding shop, a lead- acid battery business, and a metallurgical laboratory before being demolished in the mid-2000s. Off site residential soils were screened for metals during an
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