Document gDj7E6eyomadM9JNnB7RYpXza

Sierra Club v. EPA 18cv3472 NDCA yellow highlight ED 002061 00115261-00001 Geosyn tec1 t ' :>1" m - August 2 Meeting Agenda '*# a * Review DQOs and overall objectives * DQOs Where do we have alignment SMA Delineation and Allocation Support Other Technical Discussions * Downtown Reach and Sediment Traps * Surface Water and Analytes Redline edits to the draft AOC and Statement of Work Alignment and Next steps 2 Confidential: For Pw poses of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 WI ED 002061 00115261-00002 Meetings June July Aug Statement of Work Work Plan SAP/QAPP Field Work 3 Confidential: For Pw poses of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA 2017 Schedule Sept Oct Nov Dec Bathymetry Surface Water Tier 1 ED 002061 00115261-00003 Data Quality Objectives: identia orP u m ettiement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00004 Geosyntec1 oe m utants DQO Alignment Task Site-wide Bathymetry SMA Footprint Pre-RD Group DQOs _____________ Site-wide and Segment-wide Trends Upstream Background Conditions i3i Inform Future ICs EPA Conceptual Sampling for Baseline and SMAs X Surface Sediment Sampling X X (1.2) X X Fish Tissue Sampling (SMB) X Surface Water Sampling X Subsurface Sediment Coring X X X X X X Fish Acoustic Tracking Study X Camera Survey of Anglers X Porewater Sampling Upstream X Notes: (1) Evaluate trends by comparing the 2018 dataset to the 2004 dataset and other relevant datasets from the last 10 to 20 years. (2) We could adapt the 200 site-wide samples to meet EPA plan - unbiased, stratified random design per 8 segments. (3) Upstream and Downtown Reach (combined) represent what is coming into the site and what is achievable [new bullet], Confidential: For Putposes o1 Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00005 Geosyntec0* C O S S llltM ItS Site-wide Bathymetry Surface Sediment Sampling Pre-RD Group Plan l l l l l l l l l l l BMl l l l x PU! EPA Plan x Fish Tissue Sampling (SMB) X X Anadromous and Migratory Fish and Other Biota Tissue X Surface Water Sampling X X Subsurface Sediment Coring X X Fish Acoustic Tracking Study Camera Survey of Anglers Porewater Sampling Upstream Downtown Reach X x Sediment Traps 6 Confidential: For Pw poses of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Where Do We Have Alignment pie font = additional topics for discussion today Description Site-wide coverage Adjust to unbiased robust sampling program for 8 segments plus SMA sampling at 300 ft spacing for allocation, focused COCs SMB tissue sampling for focused COCs for trend analysis; whole body and calculate fillet; discuss Downtown Reach Not proposed 8 transects. 3 events, 3 samples per transect, for trend analysis, focused COCs, use passive samplers, discuss DLs/anaivies 90 SMA cores to fill data gaps needed for allocation, 2 ft increments, focused COCs, TOC, grain size See memo, results will inform tissue data analysis and use of SMB to monitor remedy effectiveness See memo; results could be useful for development of ICs 8 stations, metals, help determine PVV background for COC metals Move some samples into Downtown Reach In fine-grained areas, focused COCs Consider 2 traps at upstream transects RM 11 S and RM 18, 3 events, focused COCs, line of evidence for COC migration into Tier 1 ED 002061 00115261-00006  ta h i* Geosyiitec6* Surface Sediment Plan Progress and Potential Alignment 580 samples total 320 unbiased (randomly placed) samples 40 unbiased samples/segment (8 segments) Same SMA sample density as original plan Note: The 80 unbiased samples located in the SMAs also serve SMA delineation data needs Sample Plan 484 Plan Revised Plan Samples used for SMA Unbiased sam oles Delineation Additional Total sam p les Total Samples Unbiased added to in SM As Total Samples Sam p les SM As to (SMA samples (Total Unbiased Unbiased (inside + increase + Unbiased Unbiased + sam ples in sam ples outside sam p lin g sam ples in Additional SMAs outside SMAs SMAs) density SMAs) SMA samples) so ISO 200 284 334 484 80 240 320 260 340 580 8 Confidential: For Pw poses of Settlement Negotiatbns Only WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00008 Geosyntec1 oiiisiltEiis Overview of Revised Plan Approach Recommendation Maintain original SMA sampling approach Add 120 unbiased samples to the original 484 plan Features Mid-way effort between 484 and ERA plan Improves power for Pre-RD data objectives Addresses ERA data objectives to reasonable degree SMA Only 484 Plan | Revised Plan | EPA Plan (Figure 2, June Sample Plan 6 Plan) Q, E& Vi SMA Only 484 Plan | Revised Plan | EPA Plan =; (Figure 2, June Sample Plan 6 Plan) 9 Confidential: For Pw poses of Settietnenf Negotiations Only ` Sample plan, sizes, and costs in these slides for the Site (River Mile 1.9 to River Mile 11.8). Sierra Club v. EPA 18cv3472 NDCA Tier 1 \ wi-mrm \ ED 002061 00115261-00009 Geosyntec Revised/Proposed Plan: Changes Split 4 segments to 8 segments, split down the middle of river Rolling river miles not necessary for recovery trends over time Segments may get optimized in the future with composite sampling Add 120 unbiased samples to improve power in 8 segments Re-occupy 2004 locations (~100 locations) Enable comparisons to 2004 Stratification of unbiased samples: higher sample numbers in shoals relative to navigational channel 10 Confidential: For Pwposes of Settietnenf Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00010 Geosyntec1 'O i" M: : Revised/Proposed Plan: Evaluation Evaluated the plan's ability to address Data Quality Objectives (next slide) Evaluation for each of the 8 segments* using power analysis/Monte Carlo simulations similar to that used by EPA (Appendix A of June 6 sampling plan) See supporting slides ` Compromise plan is also sufficiently robust to analyze Swan Island Lagoon as a subset of Segment 2E. 11 Confidential: For Puiposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA 1 ED 002061 00115261-00011 Geosyntec ; ' O:!1"M: Data Quality Objectives Data Quality O b je ctiv e s Delineate SM As Recovery Trends Approach Pre-RD Group EPA Resolution Revised Plan P re -R D in v e s tig a tio n (th is e ffo rt), th e n m o re d e ta ile d s a m p lin g b a se d o n in itia l re s u lts ; E x p e c te d p r e c is io n o f + / - ~ 3 0 % in S M A s F u ll-h ig h re s o lu tio n d e lin e a tio n K e e p to P re -R D c h a ra c te riz a tio n a n d n o te h ig h -r e s o lu tio n w ill lik e ly fo llo w 7 P la n w ill e v e n tu a lly s a tis fy b o th a p p ro a c h e s C o m p a re 2004 d ata to 2018 d ata; C o m p a re 2 0 1 8 d ata to fu tu re L o o k in g fo r la rg e d iffe r e n c e s d a ta , c o m p a re fu tu re tim e (~40% ) o v e r 1 4 -y e a r p e rio d p o in ts ; L o o k in g fo r la rg e d iffe re n c e s (~ 4 0 % ) o v e r 1 0 - y e a r p e rio d U se u n b ia s e d d a ta a p p ro a c h fo r 8 s e g m e n ts , b u t a ls o re o ccu p atio n s o f 2 0 0 4 lo c a tio n s , s a m e p re c is io n d e s ire d S S a tis fie s p re c is io n o b je c tiv e a n d E P A d e s ire fo r u n b ia s e d a p p ro a c h SWACs U p d a te S W A C s; S W A C s s h o u ld be N o n e sta te d a s / m o re p re c is e th a n p re v io u s SW ACs None needed S a tis fie s o b je c tiv e s Pre- vs Postrem edy Com parisons D e te c t la rg e d iffe r e n c e s (4 0 % ) fo r D e te c t s lig h t d iffe r e n c e s (2 0 % ) P re - v s P o s t-re m e d y s e g m e n ts w ith s ig n ific a n t S M A in a ll s e g m e n t s d iffe r e n c e s s h o u ld b e la rg e c o v e ra g e (e .g ., 2 0 % o r m o re in t h e m o s t s ig n if ic a n t re m e d ia tio n ) s e g m e n t s , 4 0 % p r e c is io n is ad eq u ate V S a tis fie s o b je c tiv e w ith s a m p le s iz e s o p tim iz e d fo r e x p e c te d d iffe re n c e s Post-remedy vs Background Com parisons N o n e stated 12 Confidential: For Pwposes of Settlement Negotiatbns Only E q u iv a le n c y E v a lu a tio n (9 0 % U C L o n E q u iv a le n c y v a lu e s h o u ld b e le ss th a n ~ 1 .5 a s s u m in g e q u iv a le n t p o s t re m e d y c o n d itio n s ) None needed V S a tis fie s o b je c tiv e s WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00012 Geosyiifec6* 1 Summary/Discussion Sampling Plan and Benefits m Improves statistical power of original 484 plan in developing SWACs and quantifying natural recovery since 2004, and allows an improved 8-segment spatial scale analysis Incorporates ERA'S DQOs for pre- vs post-remedy comparisons and post-remedy vs background comparisons Captures recent technical progress made during the "statistical group" discussions: Evaluation of sampling plans on the basis of 8 segments Randomized placement method with some shift to re-occupy 80-100 of the 2004 stations Stratification of the unbiased samples between navigational channel and shoals Represents a reasonable compromise to balance sampling costs and effort with statistical power to address critical DQOs Pre-RD ERA Group Plan Plan Surface Sediment Sampling X X Description us! to unbiased robust samp n for 8 seqpients plus SMA sampling at 300 ft spacing for allocation, focused COCs 13 Confidential: For Pwposes of Settietnenf Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00013 SMA Samplin Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00014 Geosyntec i ' 'O 1 " ' - s; SMA Sampling Plan Current SMA sampling plan (~334 surface samples, 90 cores) is sufficient for a scoping-level analysis of SMA Statistical power analysis shows count is robust Responsive to requests of allocation team and meets needs of allocation group (confirmed) Re-baseline the SMA footprints to evaluate current conditions and run these data through the decision tree 15 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 WI ED 002061 00115261-00015 G eosyntec1 ;'i **: Entire Program Surface sediment cores, fish tissue, and surface water (approximate locations) M 16 Confidential: For Purposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 Active Footprint it i- J .i ft Ci-i-? Fset 0 1.300 2.000 3.900 4,SOS ED 002061 00115261-00016 Geosyntec1 COSSllltMItS Rationale for Grab Placement in SMAs Several considerations Regular spacing/ coverage across active footprint (~250 ft) Re-occupy some old stations More stations near steep chemical gradients to reduce uncertainty 17 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA SI'PS between rm a and 5E = proposed = recent sampling since the RIFS Triangles = cores Circles = grabs IIW B mHBW Tier 1 ED 002061 00115261-00017 Geosyntec ; ' >0 1"M: Rationale for Core Placement * Several considerations Lack of horizontal samples at boundaries, ~300 ft spacing Strong concentration gradient over short distance New nearshore areas included in Alt F Mod Isolated active areas/blobs proposed for dredging but without any subsurface data Tag bottom, define vertical extent Rely on best professional judgment * Note: plan not optimized with surface grab or recently completed studies (Swan Island, RM 5-6, RM 11E) 18 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 WI ED 002061 00115261-00018 Geosyntec1 'O ' - 's; B River bottom line based oo 2004 bathymetry extracted at the cross-line only. CROSS-SECTION B-B' .'1' A Blue conceptually represents water column, sediment points shown within water column .are nearshore/riverbank samples. B' Horizontal distance from cross-section origin (ft) Approach: -K - Vertical Profile Core Analysis Proposed Vertical Control Sampling Location Cross-section is based on aggregating sediment data that is located within a 275-ft buffer around the individual center cross-section line then plotting on a 3X vertical exagration scale for visual clarity. If ,:f ;;:f S> Lk< Sfociare Proposed Core Location Existing Core ^ location * fu ll 4fl > >/f h i if , h-J '.99>K/ K * V Ef fill A ' A ',J ! lilitifl'tji; yiwfifiiOfisi'.sI 19 Confidential: For Purposes of Settlement !-------- 1-------- r WU o 0.05 I -------1-------i------- 1 0.1 0.2 Miles \ Sierra Club v. EPA 18cv3472 NDCA Tier 1 Sediment concentration point located at the ending depth Portland Harbor Site Vertical Profile Analysis ED 002061 00115261-00019 Fgu*3 4 -27i, lo fai Fy aptfs o Cottimmi Csm PoMm - Rte.SF a. J > v ^W h O Rt Proposed Core Locations Exampie RM 5SE No existing cores in dredge footprint 1 core nearby horizontal and vertically bounded to 10ft Sierra Club v. EPA 18cv3472 NDCA Tier 1 ;g .S i::i:f j; j toixw zxiX'S ED_002061_00115261 -00020 Rgare 3,4~27k. T*at PAH Depth of ConiaminatioR Cc*e PnsOfes - RM6W i -.0 Sierra Club v. EPA 18cv3472 NDCA Proposed Core Locations Example RM 6W I K * Lots of cores, so focus A on boundaries and gradients On left side - add core at edges and within dredge footprint On right side - refine gradient between max PAH concentration of 3000 to -1000 mg/kg * Spacing is about 230 ft * Could optimize the spatial coverage Tier 1 ED 002061 00115261-00021 Figure 3.4-ils. PCS Depili of C492 Sierra Club v. EPA 18cv3472 NDCA Tier 1 Proposed Core Locations Example RM 91V Fill data gap to refine vertical and horizontal extents in dredge area All cores vertically unbounded except for C492 which was shortest core Data gap - no cores in shallow area LWIVIC24 had cone >750 ppb PCB but vertically unbounded and >400 ft from shore Also, no bathymetry nearshore (data gap) ED 002061 00115261-00022 I- PCS Desm of 111 Cere HilPll R.M3.5E: OB K a - & fR t `roposed Core Locations Example R i! 3.5E s* Isolated area with no existing cores ii dredge footprint 1 Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00023 Geosyntec^ ` u Proposed Core Locations - Example RM 5 to 6Nav - good coverage already exists = proposed = recent sampling since the RIFS 24 Confidential: For Pwposes of Settlement Negotiations Only Triangles = cores Circles = grabs Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00024 Geosyn tec1 t ' 'O :>1" M: Overview: Sediment Sampling 1 ^ * The Pre-RD group scope satisfies DQOs for SMA delineation and baseline dataset to evaluate recovery trends * Pre-RD Group scope for SMA delineation is sufficient (and will be further augmented with additional sampling) Sediment core density sufficient for allocation EPA effort is 100% design level (to be completed later) Willing to discuss unbiased sampling plan in 8 segments based on recent discussions with John Kern, EPA consultant New data will go through decision tree to refine the SMA footprints; including a re-evaluation of Alt F mod footprint reflecting new data 25 Confidential: For Pwposes of Settlement Negotiatbns Only WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00025 Geosyiifec6* 1 Summary/Discussion of SMA sampling plan Pre-RD scope in SMA areas: 334 grab samples 90 cores in SMA Sample count sufficient for allocation and reduces uncertainty in horizontal and vertical extent of active footprints Could move/slide the proposed stations for more optimization Do we have consensus? Pre-RD Group Plan Surface Sediment Sampling X Subsurface Sediment Coring X 26 Confidential: For Pwposes of Settlement Negotiatbns Only ERA Plan X X Description Adjust to unbiased robust sampling program for 8 segments plus SMA sampling at 300 ft spacing, focused COCs 90 SMA cores to fill data gaps needed for allocation, 2 ft increments, focused COCs, TOC, grain size Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00026 Downtown Reach Considerations (surface sediment and sediment traps) 27 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 mmiMsmMm ED 002061 00115261-00027 Geosyntec0, * Downtown Reach Pr evi ous Surface Sediment Sampling Studies Previous investigations: 2008 investigation by ODEQ included 81 surface grabs and 36 subsurface sediment samples to identify target cleanup areas 2010 (Phase II) another sampling event by ODEQ in focus areas 2014 Kleinfelder investigation Several sediment cleanup investigations under ODEQ: RM 12.2W (former Portland Gas Manufacturing MGP Facility) RM 13,1 and 13,5E (PGE, one cap in 2015, other in design) RM 13.6 (Zidell property, completed 2011) RM 15W 28 Confidential: For Purposes o f Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00028 Geosyntec1 iX- Downtown Reach Historical Sediment Sampling Locations .* *>* ` * * * **+ * Figwre i Sediinerii Sampling L-saORS Overview B-wmom'i Por&asd Sedi:ment C h a ra cte r safer* P h a se i Field and Data Report $#? Potfianci. Oregon LEGEND ij:....ii [KsO -hase ?Facj'-sAreas DP5C Ptsa-s i;l Sedirffisni: Saraais Losaticn 0 5j3fnjs;a aarapis Lnsns.o-t'iy -ist; Sar^e rehMad DPSC Phase i 5*dsrai*rc?Sampf* @ ^ a = st i * r'-ev*. E'sfin=g: Sttftjwefft. iSarripta Leatirt l*-3 vii r.t/.jilar.if-'Je thsf Bata and f-aaijjfes * .?.& -5 4$ Acto& itaas. CAiBte wri >esncanfi, ar ... ....Cssfnms.**** 3li ii w tr ^ipefoe- ... *....5tcfrwas+'Pelina AhiWOi^sa: =kx-sr iP ^ l R -E 3' ^ f L 2 r je r t f ? Appro'airasse v^uuuuuuuuuu^ - T Z -^ ni V 2 " fsaa -------Rfve.-SsiiijRisi! *A6P MfYFFSS" 29 Confidential: For Purposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00029 Geosyntec0, * a : - ' ; n a r r r ' ; Sediment Trap Sampling Summary o f 2007 Round 3 4 o f the Ri Four sediment traps deployed near RM 11.9 and 16.5 Sampled quarterly to evaluate quantity of accumulated sediment and analyze for total PCB Aroclors and Congeners in select samples 30 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00030 Geosyntec1 EPA's Plan for Downtown Reach Sampling m Downtown Reach is between RM 119 and 16.5, bounded by the Site and Upstream Reach EPA's Sampling Plan proposes: 60 surface sediment samples (0 to 30 cm) (Table 3 says 30 samples) 4 sediment trap samples 30 SMB tissue samples (15 from each side, five 3-fish carp composites) 6 surface water samples in Downtown Reach at RM 11.8 and RM 16.5 Traps colocated with surface water, 2 samples per transect, 3 SW samples per transect at 2 depths, quarterly for 1 year Analyze for all sediment and surface water COCs (ROD Table 17) plus TOC and DOC at Year 0 (surface water) 3 1 Confidential: For Purposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 SSiigiiissjiisS i; SSteC' ; ED 002061 00115261-00031 Geosyiitec6* M! Summary/Discussion Downtown Reach - Sediment Sampling If sampled, ensure fine grained/mobile materials are targeted (most likely to be transported downstream to Site) Target soft, fine grained sediment with higher % fines and TOC Before each event, do a pre-survey to identify areas of soft sediment; sample these areas as spatially-randomized, non-fixed locations Include sediment traps to assure that fine grain/mobile materials suspended in the water column are characterized 40 samples appropriate for statistical robustness (downtown and upstream combined) Overall, move the upstream sample area to include the Downtown Reach could be beneficial to help characterize upstream sources to the Site, determine what is achievable, and may be used for equivalency analysis 32 Confidential: For Pwposes of Settlement Negotiatbns Only WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00032 Geosyiitec6* ' ' ,i Summary/Discussion Downtown Reach - Other Media Surface water sampling - alignment with two upstream transects in Pre-RD scope plan SMB tissue sampling - initially proposed 10 SMB samples in upstream area, add 15 to achieve EPA target in upstream/ downtown combined for equivalency analysis (Table A-1) Pre-RD group and EPA in alignment on value of incorporating the Downtown Reach into the sampling design Downtown Reach Sediment Traps Pre-RD Group EPA Plan X X 33 Confidential: For Pwposes of Settlement Negotiatbns Only Description IVlove some samples Into Downtown Reach in fine-qrained areas, focused COCs; add 15 SMB samples : traps at two upstream transects at RlVl 11.8 and RM 16, 3 events,! focused COCs, line of evidence for COC migration into site Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00033 Surface Water Sampling! Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00034 Geosyn tec1 t ' 'O :>1" M: Overview: Surface Water Sampling * ^ The Pre-RD group and EPA are in general alignment on transects, 3 seasonal sampling events, and 3 locations per transect, total and dissolved testing Our plan is different, we propose vertical compositing and EPA plan has near-surface and near-bottom samples We differ in analyte list and passive sampling methods 35 Confidential: For Pwposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 WI ED 002061 00115261-00035 Geosyiitec6* .,, ,, ,, i'a n .', Surface W ater Sampling P 4 Plan for Pre-RD Studies Background-based surface water cleanup levels not established in the ROD due to the lack of data available; all COCs For baseline sampling, use peristaltic pump and XAD high volume samplers at 5 transects near site boundary (RM 1.9, upper Multnomah, 6, 11.8, and 16.5) Each transect will have 3 sample locations: east-channel, midchannel, and west-channel At each sample location, single-point near bottom samples and single-point near surface samples will be collected Semipermeable membrane device (SPMD) samplers will be deployed at RM 1.9, RM 6 and RM 11.8 36 Confidential: For Pwposes of Settlement Negotiatbns Only WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00036 Geosyiitec6* :, i ' ' l i Summary of Surface W ater Sampling Pre-RD Group Proposed Baseline Plan 8 transects Add transects within Site, one per river segment, sensitive RM 1.8, Multnomah channel entrance near RM 3, RM 4, RM 7, Swan Island Lagoon, RM 8.8, RM 11.6, and RM 16.2 Three vertically-averaged composite samples per transect 3 sampling events - high, low, flood Focused COCs (RGBs, dioxins/furans, PAHs, DDx) * Peristaltic pump and PE passive sampling for good detection limits Pre-RD Group Plan EPA Plan Surface Water Sampling X X D e scrip tio n 8 transects, 3 events, 3 samples per transect, for trend analysis, focused COCs, use passive sarnplers discuss 3 7 Confidential: For Putposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00037 Analyte List Ccw-mAr.* T ; ^ " Q lA /^ a r Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00038 EPA's Analyte Plan All COCs with Cleanup Levels in the ROD Sediment and Sediment Tran ail COCs (ROD Table 17} Surface water COCs (ROD Table 17) usina XAD and SPMD Metals Pesticides PAHs - PCBs - SVOCs Dioxins/furans TpH TBT Metals Pesticides PAHs PCBs - SVOCs Dioxins/furans Plus TOC and DOC at Year 0 TOC W h e re w e h ave alig n m e n t Tissue COCs (ROD Table 17) Metals (Arsenic, Hg) Pesticides - PAHs PCBs - SV O C s (BEHP, PCP) Dioxins/furans - PBDEs 3 9 Confidential: For Puiposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00039 Geosyntec Summary/Discussion Analyte List * Analysis of only Focused COC list (RGBs, DDx, PAHs, dioxins/furans) in sediment, tissue and surface water will (benefits): * Provide data on same COCs for all media, allowing for comparison across media (only 5 COCs have cross-media data) * Provide the most applicable and useful data on risk drivers at the Site for RAOs not met at T=0 * Monitor COCs with site-wide distributions; other COCs best managed with SMA design/monitoring * Provide a manageable amount of data for trend analysis and remedial design FS Section 2.2.1: "focused COCs are those that the distribution encompasses the majority of the spatial extent of contaminants posing the majority of risk as identified in the baseline risk assessments" 4 0 Confidential: For Puiposes of Settlement Negotiations Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00040 Wrap Up and Next Steps Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00041 Geosyntec Scope Alignment R evisit and sum m arize scope items Bathymetry Pre-RD Group Plan X Surface Sediment Sampling AY Fish Tissue Sampling (SMB) AY Other Biota Tissue EPA Plan AY AY X Description Site-wide coverage Adjust to unbiased robust sampling program for 8 segments (~300 samples) plus SMA sampling at 300 ft spacing focused COCs SMB tissue sampling for focused COCs for trend analysis; whole body and calculate fillet; add Downtown Reach? Not proposed Current Status Surface Water Sampling X Subsurface Sediment Coring X Fish Acoustic Tracking Study AY Camera Survey of Anglers X PW Sampling Upstream X Downtown Reach Sediment Traps Ay 8 transects, 3 events, 3 samples per transect, for trend analysis, focused COCs, add passive samplers AY 90 SMA cores to fill data gaps needed for allocation, 2 ft increments, focused COCs, TOC, grain size See memo, results will inform tissue data analysis and use of SMB to monitor remedy effectiveness See memo; results could be useful for development of ICs 8 stations, metals, help determine PW background for COC metals X 40 grabs in fine-grained areas, focused COCs, 15 SMB X Place 2 traps at two upstream transects at RM 11.8 and RM 16, 3 events, focused COCs, line of evidence for COC migration into site 42 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00042 Meetings June July Aug Statement of Work Work Plan SAP/QAPP Field Work 43 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA 2017 Schedule Sept Oct Nov Dec Bathymetry Surface Water Tier 1 ED 002061 00115261-00043 Geosyntec0* ! : , i '' .................... . QlIGStionS related to schedule and statement of work ^ : ................... SSSSS < :< :.....................................................:TM :...................... S S i............ | !:| | ............................................................ Work Plan Attached to Statement of Work (SOW) Contents of Work Plan QAPP and SAP build upon RI/FS documents, amendments as needed Data analysis and evaluation Tier II data validation 44 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 WI m W-WWi ij j te-XWX ED 002061 00115261-00044 Geosyntec ; ' 'O 1 " ' - s; AOC Elements Focused well-defined tasks and goals Timely implementation Safeguards to ensure efficiency (e.g., expert panel) Support allocation Common understanding that we follow the data 45 Confidential: For Pwposes of Settlement Negotiatbns Only WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00045 Geosyntec0* : i||^ Next Steps How do we get to September Alignment of work items by end of August So, we can write the Work Plan in September Weekly meetings to refine scope Schedule meeting to review red line edits of AOC and SOW Summary meeting notes of consensus points 46 Confidential: For Pwposes of Settlement Negotiatbns Only WI Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00046 Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00047 48 'OSesfSwk CWtiemiai: Forp Ptjtp , Sierra Club V. E P A 18cv3472 n d ca Tier 1 mm Zoomed-in Haps ED 002061_00115261-00048 49 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 Zoomed In Maps RM 1.8 to 4 I SiHP ED 002061 00115261-00049 Geosyntec ; ' O ;! 1" M ; Zoomed In Maps RM 4 to 6.5 50 Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00050  , -mV m \Pii Zoomed In Maps RM 6.7 to 8.5 51 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00051 Geosyntec ; ' O ;! 1" M ; Zoomed In Maps Swan Island Lagoon L&g^nd ^rr^rwwfl -ta i-rM c rin w r t * i ran a.ir*; ^ j i> " )>"<'* sr v S; i i t i r K:-srf" l rr-tfi :>VMJ ns'TwjiSm i 'rLV.'j.d 'Vw5:v... wi MJ. iSvlj: 4->i fc'rv a;Tfv"iii,s,i"'Htf U '-tff .....I O 't :N^v| h'|;i ; -i., -s tiiC ^ $$$;! '.Tirs ..... T^*-?**3H>7fil TR: *** A liiji i-' i't.M'i'll Siv<'J: | I i'JunnM 52 Confidential: For Pwposes of Settlement Negotiatbns Only tes-; Sc.<r<*5- EM ri;1riSito.C-->cE?.* Sr.ri: i=ir;rs--k*.!'';MFP!^rhii"P, .PTiA, A*r- H ' i l l ' K i C i i : .!>:m C i " ! : .!! i ? PArfiMp^TsiaiMtlVl A F MNoidssTanftfSlh1m( ApikjyL^Ach}t:fef ml (Y!*ar:int i Rvfis?<1 ii'.rtvy- eu&vntec^ Ci.K .ii ,i.ni .'7 Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00052 Lgend -V<9*rxe t f l ; .<ITH fr ! " !' fSH Mr* | v ' C.yr- ?Tf(` .& rwe^rate ?: UltimifocaiM*! Uxtrt[34; * H'/: ~yy.Ji*Sarn? ..... JA'j-d ''kiTiw-. ''&i s'iVa: ait'jjfc! rj- i kJ-m fc'>: j'" rrc *::>. t : i --.w tf ms :riN^I &'!.> > 5 *.tti Ozj> c*->?r ......... 'ShVXi 'A J .*!<S.I -- ? 0- ? 'C :` -0 S a - K:*7 0 1 TF: - --- /d#!?..:t, SvE.^-l^v j I V.fcMi.e.ft*- i'tl<iriJ 53 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 Zoomed In Maps RM9 to 11 Htslss: Sassrif: 3i;ri* E-^ WjJsKBibi.^i'CSy* s?Jl*^?r "n. ^ri*. .rvsr Awi,",?i^ f:.;':; H-l!l` wGli; .)*! :! >.;i~:v^l 1-, PAr&8*|KfrMi!5i*t<hl.'ft F Mttd TfiiTShai'miofpeli*gyL<Ae^<rltgtlim<*iYtsifairmit i P-rrtlvd -hrr>v C eo syntec^ ',,.'..<1 ACsi 2017 f: i3-:'~ 1* ED 002061 00115261-00053 Geosyntec1 i! - - r ' - s; Zoomed In Maps RM 10 to 12 - V Le-Sjeiffd E:-tylxlv V t /(('(i IfijiiS ii ti. KJa f:v.- C:>': t it: .& "WH S i'jrfaiv Sefflc I tarr&Es-,<-%$: ft n:: ik- k ^r-ryvMl"' 'rr:*" Vjtfdr'.'i'* Waott'iifrir,- * h'vL "CJ *>>:'! ;;si.;fif4svFK'c M i ' <> 11<:*i' v "KIT --s?.x-' '4* '.far !: sk-:*<* ; ! ::i> A lii-?!.A'fcHifjtTMfUn* fia*F-vrli) i OtljiPI J V v.k ! "j: tixcl it- : 'ifi'Kr -Ka: ri~j-. Ak1>i&'lLl !3V,, di e01: JlCf G*"r.': 111. Proposittl ipTiSHdas^gn: Bampte Locations and ie m a tiv E PMod tcctonotacjy.AsstQinment l-^Jl&V Gewwril;- R g ti's 1f 54 Confidential: For Pwposes of Settlement Negotiatbns Only Sierra Club v. EPA 18cv3472 NDCA Tier 1 ED 002061 00115261-00054