825 NE Mul tnomah, 15 00 LCT Portland, OR 97232 phone (503) 8 13-5036 May 22, 2014 Via E-Mail Sean Sheldrake U.S. Environmental Protection Agency 1200 Sixth Avenue, Suite 900 M/S ECL-115 Seattle, WA 98101 [email protected] Re: Supplemental RI/FS Work at the River Mile 1 lE Project Area Portland Harbor Superfund Site (PHSS) Transmittal of the Final Porewater Sampling and Analysis Plan Dear Mr. Sheldrake: Attached for your review and approval is the Final Porewater Sampling and Analysis Plan (SAP) for the River Mile 1 lE Project Area. The Final SAP addresses the final round of comments that the U.S. Environmental Protection Agency (EPA) transmitted to the River Mile (RM) 1 lE on April 25, 2014. To assist with the review of the document, we have attached a copy of the comment table that EPA and the RMl lE Group have been exchanging that denotes (in red) where the SAP has been updated to address each ofEPA's comments. Please do not hesitate to contact me if you have any questions. I Jacqueline Thi ell Wetzsteon RMl lE Project Coordinator ec: River Mile 1 lE Respondents AOC Notice Recipients (Paragraph 97.c through m) Paul Fuglevand Porewater Sampling and Analysis Plan River Mile 11 East Willamette River Portland, Oregon May 2014 Prepared for RM11E GROUP Prepared by Smmc• & Engmnring for th• Environment DALTON OLMSTED FUGLEVAND DOF Water Solutions, Inc. This page intentionally left blank. Porewater Sampling and Analysis Plan Page ii River Mile 11 East - Portland, Oregon May 2014 Contents Section 1. Introduction ............................................................................................................................. 1 1.1 Purpose and Objectives ............................................................................................................. 1 1.2 Summary of Existing Sediment Data ...................................................................................... 2 1.3 SAP Preparation ......................................................................................................................... 2 Section 2. Porewater Study Design ......................................................................................................... 3 2.1 Data to Inform Remedy Selection .................................................................................................. 3 2.1.1 Remedial Design Models ........................................................................................................ 3 2.1.2 Inputs to the Model ................................................................................................................... 4 2.2 Sampling Methods ........................................................................................................................... 6 2.3 Porewater Sampling Program ........................................................................................................ 6 2.3.1 Defining the Sampling Area .................................................................................................... 6 2.3.2 Porewater Sampling Stations ................................................................................................. 8 2.4 Preliminary Remediation Goals as Design Inputs .................................................................... 10 Section 3. Project Organization ............................................................................................................. 11 3.1 Team Organization and Responsibilities ................................................................................... 11 3.1.1 Project Manager (PM) .......................................................................................................... 11 3.1.2 Field Director (FD) ................................................................................................................. 11 3.1.3 Sampling and Analysis Coordinator (SAC) ....................................................................... 12 3.1.4 Field Support .......................................................................................................................... 12 3.1.5 Data Validation and Management Support ....................................................................... 12 3.1.6 Senior Chemist ........................................................................................................................ 13 3.1.7 Laboratory Services................................................................................................................ 13 3.2 Regulatory Oversight ................................................................................................................... 13 3.3 Health and Safety .......................................................................................................................... 14 Section 4. Field Activities to Support Porewater Sampling ......................................................... 15 4.1 Overview of the Porewater Sampling Approach ................................................................ 15 4.2 Sample Location and Sample Designations ......................................................................... 16 4.3 Navigation and Sample Locating .......................................................................................... 16 4.4 Field Porewater Reconnaissance Survey .............................................................................. 16 4.5 Field Deployment and Retrieval Methods ........................................................................... 17 Porewater Sampling and Analysis Plan Page iii River Mile 11 East - Portland, Oregon May 2014 4.6 Post-Processing PE Samplers ................................................................................................. 20 4.7 Sediment Core Sample Processing ........................................................................................ 20 4.8 Sample Handling, Custody, and Transport ......................................................................... 21 4.9 Cultural Resource Monitoring ............................................................................................... 21 Section 5. Laboratory Analyses ........................................................................................................ 22 5.1 Chemical Analyses ................................................................................................................... 22 5.2 Porewater Samplers ................................................................................................................. 22 5.3 Sediment Analyses ................................................................................................................... 23 5.3.1 Conventionals ................................................................................................................... 23 5.3.2 PCB Aroclors and Congeners ......................................................................................... 24 5.3.3 Black Carbon ..................................................................................................................... 24 5.3.4 Standard Reference Material .......................................................................................... 24 5.4 Laboratory QA/QC Procedures ............................................................................................ 24 5.5 Archived Samples ........................................................................................................................ 25 Section 6. Data Management ............................................................................................................ 26 6.1 Field Data Management .......................................................................................................... 26 6.1.1 Field Documentation ....................................................................................................... 26 6.1.2 Sample Identification ....................................................................................................... 26 6.2 Electronic Data Management ................................................................................................. 27 Section 7. Schedule and Reporting ....................................................................................................... 28 Section 8. References ............................................................................................................................... 29 Porewater Sampling and Analysis Plan Page iv River Mile 11 East - Portland, Oregon May 2014 List of Tables and Figures Tables Table 2-1 Two Carbon Equilibrium Partitioning and Cap Model Parameters and Data Source Table 2-2 Physical Characteristics and Total PCB Concentrations of Select Sediment Samples Table 2-3 Location and Rationale for the Porewater Sampling Locations Table 2-4 Portland Harbor Superfund Site Preliminary Remediation Goals (EPA Recalculation March 2014) Table 3-1 Project Contact Information Table 4-1 Sample Media, Number of Samples, and Analyte Groups Table 4-2 Sample Coordinates, Location ID, and Sample ID Table 4-3 Specific Samples, Analyses, Assigned Lab, and Station Labeling Table 4-4 Container and Preservation Requirements, Holding Times for Samples Table 5-1 Range of properties of 13C-labelled PCB Congeners used as Performance Reference Compounds and Recovery Standards Table 5-2 Data Quality Goals for PCB Congeners in Polyethylene Table 5-3 Sample Preparation and Analysis Method Summary for Sediment Samples Table 5-4 Parameters Used to Evaluate Data Quality