Draft Recontamination Assessment Report, River Mile 11 East, May 2018; RA Report)
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FIGURE 2 Total PCB RAL Exceedance Areas RiverMile 12to 10 WillamRiver ette Portland,Oregon LEGEND T otalPCB RAL Exceeda nceArea Ma ppingArtifact 9 Total PCBs in Surface Sediment6,7 N a vCha nnelRALs: >200ug/kg N ea rshoreug/kg200RALs: - >75 " " Belowug/kg75 RALs:- 0 " " " " " " N on-Detect(PointsOnly) """ " " # " " " # # #" " "" # # " " " Re-OccupiedSupplem entalRI/FS " " " X SurfaceSedim Sam ent ple " " " " RM 10 " " " ExistingSurface Sedim Sam ent ple " " X " X X " " " " X " X " " " " " " " " " " " "" "X " " " " " " " "X " "# # # ExcludedDue Capping/Dredgingto " " " " "X " " " ) " " " " " XX " " " X " " " " " " """ " " " "" X " " # " X " " " " " " X " " " " " X " " " " " All Other Features " " " " " " " " " " " " " " " " " " " " EPASurface Sedim Sam ent ple 8 " " " " " " " " " RM11EProject Area " "" " " " 11 RM " " " " " " " " " (da shedline indica tes " " " " " " " inferredtopof ba nk) " " " " " " RM 12 " " " " " " " " " "" " RiverMile Tenth " " " " " " " " " 4 "" " " AOPC25 " " "# " EPASDU " " U .S. ArmU .S. yCorps ofEngineers " N a viga tionCha nnel Cityof Portland, Oregon MAP NOTES: Date:Octob 2017 er 17, The 4. AOPC bounda25 ryconsistentis with theinform a tionpresented thein The 7. source ofthe sedim da ent theisRM11E ta da described taset in AOPCArea= ofPotential Concern DraftFSreport for thePortland Harbor (Anchor 2012).QEA al., et Sectionofthe 10.2 Supplem entalFieldRI/FS Sam plingand Data FS = FeaFS= sibilityStudy The 5. Total PCB RAL footprints were delinea tedusing thenatural neighb or ReportTotal 2014). PCB (GSI, concentrations were ca lculatedusing the PCBPolychlorinated= Biphenyl interpolationsArcGIS)(in of surface sedim concentrations ent ainma nner PortlandHarbor FS(RA/ba ckground)da rules. ta RALRem= edialAction Level consistentwithused tha t by theLower Willam Group ette theinDraft FSfor the EPA sam8. plesreflect all “Total PCB (Calc’d)” results for surface sedim ent RI = Rem= RI edialInvestiga tion PortlandHarbor. fromtheSCRA Datab a seda tedFeb ruaand2016 ryprovided8, Appendixin A3 o 1. The 1. loca of tionsall fea turesshown are approxim a te. For consistency6. with thePortland Harbor "Total PCB"RI/FS, concentrations oftheFinal Rem edialInvestiga tionReport for Portland Harbor 2016).(EPA, 0 500 1,000 2. Aerial 2. photo ba setaken fallin 2013by METRO. shownrely upon PCB congener da where ta ava ilab leand PCB Aroclor da ta No 9. sam pleda present ta supportto regionthis asaSedim Ma ent nagem ent 3. RM11E 3. Project Area includes AOPC and25 theadjacent riverba nkarea to wherePCB congener analysis wa conducted.not s AreaThis ama . is ppingartifact from theGISNa turalNeighb oranalytica process. l Feet thetopof ba nk. DocumPath:P:\Portland\487-DOF\GIS\Project_m ent xds\Recontam ination_Assessment\SMA\EPAextent\Figure2_T otal_PCBs_RAL_ Exceeda nce.mxd FIGURE 3 Total PAH RAL Exceedance Areas River Mile 10 to 12 Willamette River Portland, Oregon LEGEND Total PAH RAL Exceedance Area Total PAHs in Surface Sediment6 Nav Channel RALs: >170,000 ug/kg Nearshore RALs: >13,000 - 170,000 ug/kg Below RALs: 0 - 13,000 ug/kg " " Non-Detect (Points Only) " " " " " """ "# " " # Existing Surface Sediment Sample " # # " " " " # " " # " " " " " " )# Excluded Due to Capping/Dredging " " " " " RM 10 " All Other Features " " " " " " " " "" " " " " " " " " " " " " 7 " " " " # EPA Surface Sediment Sample "" " " " " " " " " " " "" " " " " " " " " " """ " " " "# " " " " " " " " " RM11E Project Area " " " " " " (dashed line indicates " " inferred top of bank) " " " "" " " " " River Mile Tenth " "" " " " " 11 RM " " " " " " " " 4 " " AOPC 25 " " " " " " " " " " EPA SDU " RM 12 " " " " " " " " " "" " " " " " " " " " " " " U.S. Army Corps of Engineers "" " " " " " " " " Navigation Channel " " " " "" " " "" " " MAP NOTES: Date: October 17, 2017 5. The Total PAH RAL footprints were delineated using the natural neighbor 7. EPA samples reflect all 'Total PAHs (calc''d)' results for surface sediment AOPC = Area of Potential Concern interpolations (in ArcGIS) of surface sediment concentrations in a manner from the SCRA Database dated February 8, 2016 and provided in Appendix A3 FS = Feasibility Study consistent with that used by the LWG in the Draft FS for the Portland Harbor of the Final Remedial Investigation Report for Portland Harbor (EPA, 2016). RAL = Remedial Action Level (and shown in Figure 1-2.) 1. The locations of all features shown are approximate. 6. The source of the sediment data is the RM11E dataset described 2. Aerial photo base taken in summer 2014 by METRO. in Section 10.2 of the Supplemental RI/FS Field Sampling and Data o 3. RM11E Project Area includes AOPC 25 and the adjacent riverbank area to Report (GSI, 2014). Total PAH concentrations were calculated using 0 500 1,000 the top of bank. the Portland Harbor FS (RA/background) data rules. 4. The AOPC 25 boundary is consistent with the information presented in the Feet Draft FS report for the Portland Harbor (Anchor QEA et al., 2012). Document Path: P:\Portland\487-DOF\GIS\Project_mxds\Recontamination_Assessment\SMA\EPAextent\Figure3_Total_PAHs_RAL_Exceedance.mxd FIGURE 4 Total DDx RAL Exceedance Areas River Mile 10 to 12 Willamette River Portland, Oregon LEGEND Total DDx RAL Exceedance Area Total DDx in Surface Sediment6 Nav Channel RALs: >650 ug/kg Nearshore RALs: >160 - 300 ug/kg Below RALs: 0 - 160 ug/kg " " Non-Detect (Points Only) " " " " " Conventional Surface Sediment """ "# " " # " # # Sample " " " # " # " " " " " " High-Resolution Surface Sediment " " ( Sample " RM 10 " " " " " " " "!(" ""!( "S!( " " " " " " " " " " "" S Sample Replaced " " " " " " " " # """ " " " " "!( !("S " " "" " " " " " "S!( " " " " " !( " # # Excluded Due to Capping/Dredging " " """ " " " " " " ) " !( " " " All Other Features " " " " " 7 " " EPA Surface Sediment Sample " " "" " " " " " "" " " " 11 RM " " " " " " " " " RM11E Project Area " " " " " " " (dashed line indicates " " " " " inferred top of bank) " " " " " RM 12 " " " " " " " "" " " " " " " River Mile Tenth "" " " " " "" " " " " " 4 " " " AOPC 25 " "" " " "" EPA SDU " U.S." Army Corps of Engineers Navigation Channel City of Portland, Oregon MAP NOTES: Date: October 17, 2017 5. The Total DDx RAL footprints were delineated using the natural neighbor 7. EPA samples reflect all 'Total DDTs (calc''d)' results for surface sediment AOPC = Area of Potential Concern interpolations (in ArcGIS) of surface sediment concentrations in a manner from the SCRA Database dated February 8, 2016 and provided in Appendix A3 FS = Feasibility Study consistent with that used by the LWG in the Draft FS for the Portland Harbor of the Final Remedial Investigation Report for Portland Harbor (EPA, 2016). RAL = Remedial Action Level (and shown in Figure 1-2.) 1. The locations of all features shown are approximate. 6. The source of the sediment data is the RM11E dataset described 2. Aerial photo base taken in summer 2014 by METRO. in Section 10.2 of the Supplemental RI/FS Field Sampling and Data o 3. RM11E Project Area includes AOPC 25 and the adjacent riverbank area to Report (GSI, 2014). Total DDx concentrations were calculated using 0 500 1,000 the top of bank. the Portland Harbor FS (RA/background) data rules. 4. The AOPC 25 boundary is consistent with the information presented in the Feet Draft FS report for the Portland Harbor (Anchor QEA et al., 2012). Document Path: P:\Portland\487-DOF\GIS\Project_mxds\Recontamination_Assessment\SMA\EPAextent\Figure4_Total_DDx_RAL_Exceedance.mxd FIGURE 5 2,3,7,8-TCDD RAL Exceedance Areas River Mile 10 to 12 Willamette River Portland, Oregon LEGEND 2,3,7,8-TCDD RAL Exceedance Area 2,3,7,8-TCDD in Surface Sediment6 Nav Channel RALs: >0.002 ug/kg Nearshore RALs: >0.0006 - 0.002 ug/kg Below RALs: 0 - 0.0006 ug/kg " " Non-Detect (Points Only) Re-Occupied Supplemental RI/FS X Surface Sediment Sample Existing Surface Sediment Sample RM 10 "" " " " "" " "X " " " " "" )# Excluded Due to Capping/Dredging " " " " ")#* " " " ")#* All Other Features " " " " EPA Surface Sediment Sample7 " " RM11E"" Project Area (dashed line indicates " " RM 11 RM inferred" top of bank) " " " River Mile Tenth " RM 12 " AOPC" 254 " " " " EPA SDU " " U.S. Army Corps of Engineers" Navigation Channel " MAP NOTES: Date: October 17, 2017 5. The 2,3,7,8-TCDD RAL footprints were delineated using the natural neighbor 7. EPA samples reflect all '2,3,7,8-Tetrachlorodibenzo-p-dioxin' results for surface AOPC = Area of Potential Concern interpolations (in ArcGIS) of surface sediment concentrations in a manner sediment from the SCRA Database dated February 8, 2016 and provided in FS = Feasibility Study consistent with that used by the Lower Willamette Group in the Draft FS for the Appendix A3 of the Final Remedial Investigation Report for Portland Harbor RAL = Remedial Action Level Portland Harbor. (EPA, 2016). RI = Remedial Investigation 6. The source of the sediment data is the RM11E dataset described 1. The locations of all features shown are approximate. in Section 10.2 of the Supplemental RI/FS Field Sampling and Data o 2. Aerial photo base taken in summer 2014 by METRO. Report (GSI, 2014). Total 2,3,7,8-TCDD concentrations were calculated 0 500 1,000 3. RM11E Project Area includes AOPC 25 and the adjacent riverbank area to using the Portland Harbor FS (RA/background) data rules. the top of bank. Feet 4. The AOPC 25 boundary is consistent with the information presented in the Draft FS report for the Portland Harbor (Anchor QEA et al., 2012). Document Path: P:\Portland\487-DOF\GIS\Project_mxds\Recontamination_Assessment\SMA\EPAextent\Figure5_2378_TCDD_RAL_Exceedance.mxd