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Table 1. Overview of Pre-Remedial Design Investigation Studies Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
PD! Study Elem ent Bathymetric Survey
Surface Sediment Sampling for Baseline and SMA Delineation
SMB Fish Tissue Sampling for Baseline
Surface W ater Sampling for Baseline
Subsurface Sedim ent Coring to Refine Remedial Footprint Boundaries Fish Acoustic Tracking Study Camera Survey of Anglers
Downtown/Upstream Reach: Sediment, Surface Water, Tissue, and Trap Sampling to assess incoming loads
Background Po rew ater Sampling
Genera! A p proach and Rationale
Current bed elevations to support the CSM, evaluating changes in sediment bed elevation, and run through decision tree. For SMA delineation and Baseline with Site Total sample count of 640 within Site:
428 unbiased; Full ROD Table 17 Sedim ent COC list 212 SMA samples; Focused COCs only (1) Split 4 segments in half for 8 segment, plus Swan Island. 3-point composite (over small area) Reoccupation of ~ 108 stations Smallmouth bass fish tissue sampling at 95 stations in the Site Individual whole body samples, derive fillet values through relationship Full ROD Table 17 Tissue COCs Seven transects, 3 seasonal events, 3 subsamples per transect Vertical and horizontal compositing along transect Sample with high volume XAD samplers for low MDLs and peristaltic pump for select analytes Full ROD Table 17 Surface W ater COCs, total and dissolved 90 sedim ent cores typically 10 to 15-ft deep and 6-ft in nearshore areas 2-ft sample increments Archive deeper intervals Focused COCs only (1), plus TOC and grain size
Year long study of acoustic tracking of SMB fish movements
Place cameras at several popular fishing spots to capture fishing use patterns over year long period 60 sediment samples collected between RM 11.8 to RM 20 targeting fine grained sediment (30 samples Downtown Reach, 30 samples Upstream Reach) 40 SMB samples (20 in Downtown Reach; 20 in Upstream Reach) Surface w ater transects at RM 11.8 and RM 16.2 3 seasonal sampling events for surface water
Two sediment traps per transect at RM 11.81 and 16.5 (match SW program)
Full ROD Table 17 COCs for each media; all data will be considered; assumes sufficient sediment and fish present 10 locations with 3 composites per location Target placement in representative background areas, locations TBD Naturally-occurring COC metals - arsenic and manganese
Notes: (1): Focused COCs include PCBs, DDx, PAHs, and Dioxins and Furans Abbreviations: COCs - contaminants of concern; SW - surface water; SMA - Sediment Management Area; TOC - Total Organic Carbon; MDL - method detection limits; SMB - smallmouth bass; PCB - polychlorinated biphenyls; DDx - sum of dichlorodiphenyltrichloroethane and its derivatives; PAHs - polycyclic arom atic hydrocarbons; CSM - Conceptual Site Model
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Table 2. Focused COCs with Remedial Action Levels Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Contaminant of Concern
DDx PCBs PAHs cPAHs (BaP eq) 1,2,3,4,7,8 HxCDF 1,2,3,7,8 PeCDD 2,3,4,7,8 PeCDF 2,3,7,8 TCDF 2,3,7,8 TCDD
RALs (Outside Navigation
Channel)
Unit
Cone.
pg/kg
pg/kg
pg/kg
pg/kg
pg/kg
pg/kg
160 75 13,000 NA NA 0.0008 0.2 NA 0.0006
RALs (Navigation Channel)
PTW RALs
Unit
pg/kg
pg/kg pg/kg
pg/kg
pg/kg
pg/kg
Cone.
650 1,000 170,000
NA NA 0.003
1
NA 0.002
Unit
pg/kg
pg/kg
pg/kg
pg/kg pg/kg
pg/kg
pg/kg pg/kg
Cone.
7,050 200 NA 106,000 0.04 0.01 0.2 0.6 0.01
Notes: The Record of Decision notes Alternative F Modified includes application of Alternative F RALs outside of Navigation Channel areas of the site, and application of Alternative B RALs within the Navigation Channel. Abbreviations: cPAH carcinogenic polycyclic aromatic hydrocarbon; DDD dichlorodiphenyldichloroethane; DDE dichlorodiphenyldichloroethene; DDT dichlorodiphenyltrichloroethane; DDx DDD + DDE + DDT; PAH polycyclic aromatic hydrocarbon; PBDE polybrominated diphenyl ether; PCB polychlorinated biphenyl; PeCDD pentachlorodibenzo p dioxin; PeCDF pentachlorodibenzofuran; PTW - principal threat waste; RAL - Remedial Action Levels; TCDD 2,3,7,8 tetrachlorodibenzo p dioxin; TCDF tetrachlorodibenzofurans; pg/kg microgram per kilogram; NA - not available
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Table 3. Sum m ary of Cleanup Levels or Targets by Media Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Contaminant o f Concern
Aldrin Arsenic Benzene BEHP Cadmium Chlordanes Chlorobenzene Chromium Copper Cyanide DDx DDD DDE DDT 1,1 Dichloroethene cis 1,2 Dichloroethene Dieldrin 2,4 Dichlorophenoxyacetic acid Ethylbenzene Hexachlorobenzene Lindane Lead Manganese MCPP Mercury Pentachlorophenol Perchlorate PBDEs FCBs P A ris tPAHs. BaP eri Acenaphthene Acenaphthylene Anthracene Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene lndeno(1,2,3 c,d)pyrene 2 Methylnaphthalene
Surface Water'1'
Unit
Ud/L pg/L
Cone.
0.00000077 0.018
Basis
A A
pg/L
0.2
A
ug/L 0.000081
A
pg/L
100
A
pg/L
2.74
A
ug/L
0.01
pg/L 0.000031
A
pg/L 0.000018
A
pg/L 0.000022
A
pg/L
7.3
R
pg/L 0.000029
A
pg/L
16
R
pg/L
0.03
A
l ig i 0 00000;
A
uq/L '("'012
A
ug/L
0.0012
A
ug/L
0.00012
A
pg/L
0.0012
A
pg/L
0.0013
A
ug/L
0.0013
A
ug/L
0.00012
A
pg/L
0.0012
A
River Bank Soil/Sediment
Fish Tissue Targetl,li
Unit
pg/kg mg/kg
Cone
2 3
Basis Unit
R pg/kg B mg/kg
Cone.
0.06 0.001
Basis
R R
pg/kg
135
R pg/kg
72
R
mg/kg
0.51
R
pg/kg
1.4
R pg/kg
3
R
mg/kg
359
R
pg/kg pg/kg
pg/kg pg/kg
6.1
Pi
114
R
226
R
246
R
3
R
pg/kg
0.07
R pg/kg
0.06
R
pg/kg pg/kg mg/kg
mg/kg
pg tp NfJ kg pg/kg
5 196
0.085
9 23000 '-"i
pg/kg
0.6
R
R
R
R mg/kg 0.031
A
pg/kg
2.5
R
. . 26
R
e "g kg 0 20 ..6> R
B pg/kg
... ,
R
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Table 3. Sum m ary of Cleanup Levels or Targets by Media Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Contaminant o f Concern
Naphthalene Phenanthrene Pyrene Dloxins/Furans (2.3,7,8 TCDD eq) 1,2,3,4,7,8 HxCDF 1,2,3,7,8 PeCDD 2,3,4,7,8 PeCDF 2,3,7,8 TCDF 2,37,8 TCDD Tetrachloroethene Toluene TPH Diesel TPH Diesel (C10 C12 Aliphatic) Tributyltin Trichloroethene 2,4,5 Trlchlorophenol Vanadium Vinyl Chloride Xylenes Zinc
Total COCs
Surface Water (1)
River Bank Soil/Sedim ent (3)
Fish Tissue (4)
Umt
Cone.
Basis Unit
pg/L
12
R
Cone. Basis Unit Cone. Basis
0.0000000
A
pg/kg
?0004
B pg/kg 0 993 R
pg/kg
0.0002
B pg/kg 0.000008 R
pg/kg
0.0003
B pg/kg 0.00003
R
pg/kg
0.00040658 R pg/kg 0.00008
R
I'd Ki
pg/kg
mg/kg
91
R
pg/L
0.063
A
pg/kg
3080
R
Md/L
36.5
R
mq/kq
459
R
27
23
16
Notes: Reference: ROD Table 17 Focused COCs shown in blue (1) Surface Water Cleanup Levels RAOs 3 and 7 (2) Groundwater Cleanup Levels are not shown (3) Sediment Cleanup Levels RAOs 1 and 5 (4) Fish Tissue Targets RAOs 2 and 6 (5) The tissue target is a risk based number and does not represent background levels. Additional data will be collected to determine background fish tissue concentrations for PCBs during design and construction of the Selected Remedy.
(6) The cleanup level for cPAHs of 12 pg/kg is based on direct contact with sediment and is applicable to nearshore sediment. The cleanup level applicable to sediments in the navigation channel is 3,950 pg/kg and is based on human consumption of clams. Abbreviations: A ARAR based number; ARAR Applicable or Relevant and Appropriate Requirement; B Background based number; BEHP bis(2 ethylhexyl)phthalate; BaP eq benzo(a)pyrene equivalent; C carbon; Cone, concentration; cPAH carcinogenic polycyclic aromatic hydrocarbon; DDD dichlorodiphenyldichloroethane; DDE dlchlorodiphenyldichloroethene; DDT dichlorodiphenyltrichloroethane; DDx DDD + DDE + DDT; HxCDF 1,2,3,7,8,9 hexachlorodibenzofuran; MCPP 2 (4 chloro 2 methylphenoxy)propanoic acid; mg/kg milligram per kilogram; PAH polycyclic aromatic hydrocarbon; PBDE polybrominated diphenyl ether; PCB polychlorinated biphenyl; PeCDD pentachlorodibenzo p dioxin; PeCDF pentachlorodibenzofuran; R risk based number; RAO remedial action objective; TCDD 2,3,7,8 tetrachlorodibenzo p dioxin; TCDF tetrachlorodibenzofurans; pg/L microgram per liter; TPH total petroleum hydrocarbons; pg/kg microgram per kilogram;
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Table 4. Project Goals for Pre-Remedial Design Investigation Scope of Work Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
#
P roject Goals
Spatial Scale
M e d ia
Q uestions to A nsw er
Obtain SMA baseline
characterization data adequate
1
SMA specific
to refine the remedial footprint
for allocation purposes
Discrete sediment grabs (0 to 30 cm), bathymetry, sediment cores
Have the active remedial footprints changed since the FS? Can we refine the footprints and reduce uncertainty? Have the elevations changed since the FS, hence the footprint changes through the ROD technology decision tree?
W hat are the extent of footprints above RALs?
Establish current baseline conditions (SWACs, human 2 health risk) to evaluate future remedy performance and progress towards RAOs
Site-wide, segments
Surface sediment, fish tissue (SMB), surface water
W hat are concentrations of COCs prior to remedial activities?
Do results support refinement of the remedial footprint?
W hat are current baseline risks?
3 Evaluate recovery chanaes within the Site
Site-wide, segments
Surface sediment, fish tissue (SMB), surface water
Are Site conditions improving since the RI/FS? Do improvements support the narrative of MNR?
4 Update upstream dataset
Upstream RM 11.8 to 20
Surface sediment, fish tissue (SMB), surface water; porewater
W hat are upstream concentrations of select COCs in sediment and fish tissue, and have they changed since the FS? W hat are background concentrations of naturallyoccurring metals COCs in porewater? How could new data inform future evaluation of remedy performance and w hat is achievable?
Notes: (1) Data collected for each project goal may serve multiple data use objectives (DUOs). Abbreviations: COCs - chemicals of concern; FWM - food web model; FS - feasibility study; RAL - remedial action level; ROD - Record of Decision; SWAC - surface weighted average concentrations; SMB - small mouth bass
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Table 5. Data Use Objectives for Pre-Remedial Design Investigation Studies Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
P roposed S cope Item
Data Use O bjective (DUO)
CSM U pdate SWAC (site and 9 segment)
U pdate Baseline C o n d itio n s R ecovery C hanges Since Ri/FS
Mode! C alibration Active Footprint/ RAL Remedial Technology
Support Allocation C urrent Risk Update Future C om pliance
# Task
Purpose
ti.
c .2
o O "5
c
C
.2
n"
W
SZ
Si
Pre-Design Field Investigation Studies
Site-wide bathymetry survey Surface sediment sampling Fish tissue sampling Surface water sampling Sediment cores Fish acoustic tracking study Camera survey of anglers Porewater sampling
footprint recovery/bkgrd recovery/bkgrd recovery/bkgrd
footprint fish home range
risk/IC bkgrd
Technical Analyses /R eporting
Evaluate current conditions
Evaluate recovery changes Evaluate upstream levels Refine active footprint Evaluate fish home ranges and scale of SWAC estimate
Refine human health consumption risks with current conditions
footprint recovery recovery footprint fish home range
recovery/risk
Data Interpretation Report
all
X
XX XX
XXXX X X X
X
XX X
X
XX X
X
X
XX
X
X
X
X
XX
X
XX
X
X XX
X
X
X
X
X
XX
XX
X
XXXX X X X
XX
X
X
X
X
X
X
X
XX
XX
X
X
XX
X
X
X
X XX
XX X XX XX
XX XX XX XX
Abbreviations: 1C - institutional controls; bkgrd - background; CSM - conceptual site model; SW AC - surface weighted average concentration
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Table 6. Summary of Pre-Remedial Design Investigation Media, Sample Counts, and Analyses for Sediment, Tissue, and Surface Water Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Media
Location Count
Sample IDs
Surface Sediment Unbiased
428 - within Site; 60 - D/U Reach
PDI-SS-BL-01 to PDI-SS-BL-428
Additional Surface
Sediment SMA
212 - within Site
PDI-SS-SMA-01 to PDI-SS-SMA-212
Subsurface Sediment
90 Cores - within Site
PDI-SC-01 to PDI-SC-90
Suspended Sediment (Sediment
Traps)
4 locations (12 samples over 3
rounds)
PDI-ST-R#-01 to PDI-ST-R#-04
Paiametei Aidrin Arsenic BEHP
Cadmium Chlordanes
Copper DDx DDD DDE DDT
Dieidrin Lindane
Lead Mercury PCB congeners (7)
PAHs cPAHs (BaP eq) 1,2,3,4,7,8 HxCDF 1,2,3,7,8 PeCDD 2,3,4,7,8 PeCDF
2,3,7,8 TCDF 2,3,7,8 TCDD
PCDD/Fs TPH Diesel Tributyltin
Zinc
TOC
Grain Size
DDx
PCB congeners (7) PAHs
PCDD/Fs
TOC
Grain Size PCB Aroclors
PCDD/Fs DDx PAHs
TOC
Grain Size Aidrin Arsenic BEHP
Cadmium Chlordanes
Copper DDx DDD DDE DDT
Dieidrin Lindane
Lead Mercury PCB congeners (7)
PAHs cPAHs (BaP eq) 1,2,3,4,7,8 HxCDF 1,2,3,7,8 PeCDD 2,3,4,7,8 PeCDF
2,3,7,8 TCDF 2,3,7,8 TCDD
PCDD/Fs TPH Diesel Tributyltin
Zinc
TOC
Grain Size
Analyte List
Method 8081B 6020B 8270C 6020B 8081B 6020B 8081B 8081B 8081B 8081B 8081B 8081B 6020B 7471A 1668 8270DSIM 8270DSIM 1613B 1613B 1613B 1613B 1613B 1613B 8015B-DRO OrganoTin 6020B Plumb 1981/EPA 9060 PSEP
8081B
1668 8270DSIM
1613B Plumb 1981/EPA
9060 PSEP 8082A 1613 8081 8270DSIM Plumb 1981/EPA 9060 PSEP 8081B 6020B 8270C 6020B 8081B 6020B 8081B 8081B 8081B 8081B 8081B 8081B 6020B 7471A 1668 8270DSIM 8270DSIM 1613B 1613B 1613B 1613B 1613B 1613B 8015B-DRO OrganoTin 6020B Plumb 1981/EPA 9060 PSEP
CD
CO
MDL 0.175 0.0102 136 0.0053 0.0097 0.0608 0.529 0.17 0.529 0.171 0.158 0.344 0.024 0.0037 10 3.3 3.3 5 5 5 1 1 5
1.53 0.144
0.00715
0.1
0.529
10 3.3 5
0.00715
0.1 0.00138
2.48 0.051
3.3
0.00715
0.1 0.175 0.0102
136 0.0053 0.0097 0.0608 0.529
0.17 0.529 0.171 0.158 0.344 0.024 0.0037
10 3.3 3.3 5 5 5
1 1 5
1.53 0.144
0.00715
0.1
CD
CO
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Units gg/kg mg/kg gg/kg mg/kg gg/kg mg/kg gg/kg gg/kg gg/kg gg/kg gg/kg gg/kg mg/kg mg/kg ng/kg gg/kg gg/kg
pg/g
pg/g pg/g pg/g pg/g
pg/g
mg/kg gg/kg mg/kg
%
%
gg/kg
ng/kg gg/kg pg/g
%
% gg/kg
pg/g
gg/kg gg/kg
%
% gg/kg mg/kg gg/kg mg/kg gg/kg mg/kg gg/kg gg/kg gg/kg gg/kg gg/kg gg/kg mg/kg mg/kg ng/kg gg/kg gg/kg pg/g pg/g pg/g pg/g pg/g pg/g mg/kg gg/kg mg/kg
%
%
ED 002061 00116433-00007
Table 6. Summary of Pre-Remedial Design Investigation Media, Sample Counts, and Analyses for Sediment, Tissue, and Surface Water Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Fish Tissue (SMB, whole
body)
Surface W a te r(6)
Porewater
95 - within Site; PDI-SMB-BL-01 to 40 - D/U Reach PDI-SMB-BL-135
7 transects (21 samples over 3
rounds)
PDI-SW-R#-01 to PDI-SW-R#-07
10
PDI-PW-01 to PDI-PW-10
Aldrin Arsenic BEHP Chlordanes
DDx Dieldrin Hexachlorobenzene Mercury Pentachlorophenol PBDEs PCB congeners (7) 1,2,3,4,7,8 HxCDF 1,2,3,7,8 PeCDD 2,3,4,7,8 PeCDF 2,3,7,8 TCDF 2,3,7,8 TCDD PCDD/Fs
Lipids
Aldrin Arsenic BEHP Chlordanes Chromium Copper
DDx DDD DDE DDT Ethylbenzene Hexachlorobenzene MCPP Pentachlorophenol PCBs cPAHs (BaP e q )(7)
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Chrysene
Dibenz(a,h)anthracene
lndeno(1,2,3 c,d)pyrene
Naphthalene
Dioxins/Furans (2,3,7,8 TCDD eq)
Tributyltin Zinc TSS
Turbidity, pH, flow rate velocity, eH, DO Arsenic Manganese redox
8081B
0.5
6020B
0.0203
8270D
11.2
8081B
0.0194
8081B
0.5
8081B
0.5
8270D
5
7471A
0.00739
8270D
63.1
1614
50
1668
2
1613B
5
1613B
5
1613B
5
1613B
1
1613B
1
1613B
5
DCM extraction
gravimetric (NOAA,
1.5
1993)
AXYS Method
0.0048
6020A
0.22
8270C
1.6
AXYS Method
0.0048
6020A
0.378
6020A
1.04
AXYS Method
0.003
AXYS Method
0.003
AXYS Method
0.0024
AXYS Method
0.0026
8260C
0.252
8270D
0.104
81515A
290
8270D
0.271
AXYS Method
0.0048-0.0608
AXYS Method or 8270SIM
0.2818
AXYS Method or 8270SIM
0.1234
AXYS Method or 8270SIM
0.0588
AXYS Method or 8270SIM
0.2818
AXYS Method or 8270SIM
0.2818
AXYS Method or 8270SIM
0.1334
AXYS Method or 8270SIM
0.1324
AXYS Method or 8270SIM
0.1264
AXYS Method or 8270SIM
0.1622
AXYS Method
0.00228
OrganoTin 6020A 2540D
0.045 2.65 NA
field parameter
NA
200.7 200.7 field parameter
0.05 0.264
--
pg/kg-wet mg/kg-wet pg/kg-wet pg/kg-wet pg/kg-wet pg/kg-wet pg/kg-wet
mg/kg pg/kg-wet pg/g-wet ng/kg-wet pg/g-wet pg/g-wet pg/g-wet pg/g-wet pg/g-wet pg/g-wet
%
ng/L gg/L pg/L ng/L gg/L gg/L ng/L ng/L ng/L ng/L gg/L gg/L gg/L gg/L pg/L ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
pg/L
gg/L gg/L NA
NA
gg/L gg/L
Notes: (1) Surface sediment MDLs from EPA Rl (2016) Table 5-2.1; PCB 1668 MDL from Vista Analytical. (2) Subsurface sediment MDLs from EPA Rl (2016) Table 5-2.2 (3) Fish tissue MDLs from EPA Rl (2016) Table 5-6.1; PCB 1668 MDL from Vista Analytical. (4) Surface water MDLs from Portland Harbor RI/FS Round 3A Field Sampling Plan Surface Water Sampling (2006) Table 2-4
(5) Porewater MDL for Mn provided by analytical laboratory (TestAmerica), MDLs for As is MRL reported in Ri/FS Round 3A Field Sampling Plan Surface W ater Sampling (2006) Table 2-4.
(6) Total and dissolved (7) Where MDLs for totals were not available, the highest MDL for individual analyte was used. Abbreviations: BL - baseline; DDx - sum of dichiorodiphenyltrichloroethane and its derivatives; PAHs - polycyclic aromatic hydrocarbon; PCBs polychlorinated biphenyls; PCDD/Fs - polychlorinated dibenzo p dioxins and furans; PDI - Pre-remediai Design Investigation. PSEP Puget Sound Estuary Protocol; PW - porewater: TOC - total organic carbon; D/U - Downtown Upstream Reach; SC - subsurface core; SMB - small mouth bass; SS - surface grab; SW - surface water
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Table 7a. Sediment Cores for Pre-Design Studies Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Alternative F Mod Footpiinl A rea; [Description
New Core i Core
Station
Re Occupy
Old Station
Oiti Station
Core Dept!) (feet bejs)
# of Samples
Estimated Vertical Extent
of C o n ta m in a tio n
(it him)
Focus COCs Above RALs at
Any Depth
Proposed Deep Subsurface Core Locations
1
X
12
6
2
X
12
6
RM 2E
Evraz
3
X
C011-2
12
2
>8.9
4
X
C019-1
12
2
5
X
12
6
RM 2.75E
Blob
6
X
12
6
>8.3
RM 3.5E
Blob
7
X
15
8
>11.2
8
9
RM 3.8E
Slip
10
11
12
RM 4.4W
Blob
13
14
RM 4.5E
Slip
-
RM 4.51E
Slip
15
RM 4.52E
Slip
-
16
RM 5 to 6
Blobs
17
18
RM 5 to 6W Shallow
19
Blobs
20
21
22
RM 5.5E
Sliver
23
24
RM 6W
25
Shallow
Long Band / 26
Inlet
27
28
29
RM 6.5E
Blob
30
31
32
33
RM7W
Blob
34
35
36
37
RM 7.5W
38
39
40
41
42
43
Swan Island
44
45
46
47
48
X
15
8
X
15
8
X
LWMC3
15
2
>12.6
X
15
8
X
15
8
X
C626
15
2
X
15
8
>14.0
No cores needed, plenty of data and all shallow exceedances, Alt F Mod
dredge
X
HC-S-42
15
2
>12.9
No cores needed, plenty of data and all shallow exceedances, Alt F Mod
dredge
X
15
8
>11.5
X
15
8
X
C136
20
2
X
C142
20
2
X
C147
20
2
>16.5
X
C179
20
2
X
15
8
X
15
8
>10.9
X
15
8
X
15
8
X
15
8
>12.8
X
15
8
X
LWMC11
15
2
X
C244
15
2
X
15
8
>10.0
X
15
8
X
15
8
X
15
8
X
15
8
>14.5
X
15
8
X
15
8
X
15
8
X
C690
20
2
>15.8
X
15
8
X
10
8
X
C421
10
2
X
10
8
X
10
8
X
10
8
>7.9
X
10
8
X
10
8
X
10
8
X
10
8
PCBs, DDx
PCBs PCBs, DDx, Dioxin/Furans
PCBs
PAHs PCBs PAH PCBs, PAHs, DDx PAHs PAHs, PCBs, DDx, Dioxin/Furans PCBs, PAHs, Dioxin/Furans, DDx
PAHs, DDx
PCBs, PAHs, DDx
PCBs, DDx, Dioxin/Furans
PCBs, DDx, Dioxin/Furans
PCBs
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Table 7a. Sediment Cores for Pre-Design Studies Portland Harbor Pre-Remedial Design investigation Work Plan Portland, OR
Alternative F Mod Footpiint Area ; D e scrip tio n
Core it
New Core Station
Re Occupy
Old Station
Oil! Station
Core Depth (feet btjs)
49
RIVISto 8.75W
long band
50 51
X X
52
X
53
X
RM 9.8W
54
X
55
X
56
57
X
RM11E
58
59
60
X
X
C450
10
20
20
20
15
15
15
X
LWMC24
15
15
X
C003
15
X
C023
15
15
Proposed Nearshore; Shadow Area Core Locations
RM 2E
Evraz
B-1
X
6
B-2
X
6
RM 3.5E
Blob
B-3
X
6
RM 3.8E
Slip
B-4
X
6
B-5
X
6
RM 3.9E
Blob
B-6
X
6
B-7
X
6
RM 4W
Blob
B-8
X
6
RM 4.52E
Slip
B-9
X
6
RM 4.8W
Blob
B-10
X
6
a of Samples
2 8 8 8 8 8 2 2 8 2 2 2
3 3
3
3 3 3 3 3 3
3
Estimated Vertical Extent
of C o n ta m in a tio n
(it him)
>8.0
>16.2
Focus COCs Above RALs at
Any Depth
PCBs, DDx, Dioxin/Furans
>12.1
PCBs, DDx, Dioxin/Furans
>10
PCBs, DDx
PCBs, DDx
PCBs, DDx, Dioxin/Furans
PCBs
PCBs, DDx, Dioxin/Furans
PAHs PCBs, PAHs
PAHs, PCBs, DDx, Dioxin/Furans
RM 5.5E
Sliver
B-11
X
6
3
PAHs, PCBs, DDx, Dioxin/Furans
RM 5.7W
Sliver
B-12
X
RM 6.2W RM 6.3E RM 6.4W RM 6.5E
Blob
B-13
X
Blob
B-14
X
Blob
B-15
X
Blob
B-16
X
RM 6.7W
Blob
B-17
X
RM 6.8E
Blob
B-18
X
RM 7W
B-19
X
Blob
B-20
X
RM 8.1W
Blob
B-21
X
B-22
X
B-23
X
Swan Island
B-24
X
B-25
X
B-26
X
RM 9E
Sliver
B-2 7
X
RM 9W
Long band B-28
X
B-29
X
RM 10.2W
Sliver
B-30
X
Total it Deep C otes
43
17
Totai # o f Nearshore Coi es
30
o f QA. QC Samples
Total if cl CoiesiSam ples
30
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
6
3
448
Jy 488
PAHs, PCBs, DDx, Dioxin/Furans PAHs, DDx
PCBs, PAHs, DDx PAHs, DDx
PCBs, PAHs, DDx PCBs, DDx, Dioxin/Furans
PCBs, PAHs, DDx PCBs, DDx, Dioxin/Furans PCBs, DDx, Dioxin/Furans
PCBs
PCBs PCBs, DDx, Dioxin/Furans
PCBs
Notes: (1) Archive deeper intervals in nearshore areas. (2) Remedial Action Level Cleanup Concentration:
PCBs = 9.0 pg/kg, total PAHs = 23 mg/kg, DDx = 6.1 pg/kg, 2,3,7,8-TCDD = 0.0002 pg/kg Abbreviations: BLM - below mudline; COC - contaminant of concern; D/F - dioxins/furans; PAH - polycyclic aromatic hydrocarbons
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Table 7b. Rationale for Sediment Core Locations for Pre-Design Studies Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
A lternative F Mod
A ctive F o otprint Area / Core
D esciiption
#
New Core S ta tio n
1
X
2
X
3
RM 2E
Evraz
4
Re Occupy
O ld S ta tio n
X
S um m aiy Rationale
A ddition al R ationale
Better define horizontal gradient extent towards the north end (cores to
Define horizontal extent - north the north do not tag bottom).
end
Better define horizontal towards the navigational channel. C600 does
not tag bottom.
Define vertical extent, reoccupy C 0 1 1-2 which remains unbounded to
Define vertical extent,
10 feet bgs with a concentration of 8,200 pg/kg PCB. Sam ples in
unbounded to 10 ft bgs
proxim ity (C 011-1, RB13, and C602) are all unbounded.
Define vertical extent, reoccupy C019-1 which remains unbounded in
Define vertical extent,
vertical direction with a concentration of 1,100 pg/kg PCB; sam ples in
X
unbounded to 10 ft bgs
proxim ity (C019-2, L.WMC1, and C604) are all unbounded.
5
X
RM 2.75E
Blob
6
X
RM 3.5E
Blob
7
X
8
X
9
X
10
RM 3.8E
Slip
11
X
12
X
13
RM 4.4W
Blob
14
X
RM 4.5E
Slip
-
RM 4.51 E
Slip
15
RM 4.52E
Slip
-
RM 5 to 6
Blobs
16
X
17
X
18
19 Shallow RM 5 to 6W
Blobs 20
Define horizontal extent - Better define the horizontal and vertical extent, previously no cores
southeast end
that tag bottom within 250 feet.
No existing core in the dredge No existing core in the dredge footprint. Nearby core C 061, C613, and
footprint
C614 are vertically unbounded.
No existing core in the dredge No existing core in the dredge footprint. Nearby core C 061, C613, and
footprint
C614 are vertically unbounded.
Define horizontal extent/improve concentration gradient. Spacing
Define horizontal extent
between cores +400 feet. Define Shallow extent.
Define vertical extent, LWMC3 unconfined vertically with a
X
Define vertical extent in A lt I concentration of TPC B at 5,000pg/kg for the entire core depth of 10
dredge footprint
feet bgs.
Define horizontal extent
Define horizontal extent/improve concentration gradient. Spacing between cores +300 feet.
C losest sam ple SED14, is unconfined vertically. Sample
n
approxim ately 3 ft bgs with a concentration of 1,100 pg/kg. Define
horizontal extent between cap and dredge.
Reoccupy C 622 which is vertically unbounded, core went down ~15'
X
Define vertical extent.
bgs with a PAH Concentration of ~150,000 pg/kg.
Define horizontal extent in shallow area
Define Horizontal extent in shallow area. C losest core is unbounded C626. Could move sam ple slightly north into proposed F Mod dredge area that contains no core samples.
No cores needed, plenty of data and all shallow exceedances, Alt I dredge
Reoccupy HC-S-42 which is vertically unbounded, core went to ~5 feet
X
Define vertical extent
bgs with a PAH concentration of 220,000 pg/kg. W ill also help define
horizontal extent in shallow area.
No cores needed, plenty of data and all shallow exceedances, Alt I dredge
Define vertical/horizontal extent
Define vertical/horizontal extent with new cores; some new cores collected in 2014 with good coverage at depth.
Reoccupy C 136 which is vertically unbounded, core went down ~15
X
Define vertical extent
feet bgs with a PAH concentration of 80,000 pg/kg. No other core in
existing dredge footprint.
Reoccupy C 142 which is vertically unbounded, core went down ~10
X
Define vertical extent
feet bgs with a PAH concentration of 240,000 pg/kg.
Reoccupy C 147 which is vertically unbounded, core went down ~15
X
Define vertical extent
feet bgs with a PAH concentration of 250,000 pg/kg.
Reoccupy C 179 which is vertically unbounded, core went down ~10
feet bgs with a PAH concentration of 90,000 pg/kg. Next to C182, also
21
X
Define vertical extent
unbounded vertically with a concentration of -25,000 pg/kg.
22
X
RM 5.5E
S liv e r
23
X
24
X
No existing cores in dredge footprint
No existing cores in dredge footprint, 1 core nearby vertically bounded at 1 0 feet belowground surface; Alt I dredge/cap. No existing cores in dredge footprint, 1 core nearby vertically bounded at 1 0 feet belowground surface; Alt I dredge/cap No existing cores in dredge footprint, 1 core nearby vertically bounded at 1 0 feet belowground surface; Alt I dredge/cap
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Table 7b. Rationale for Sediment Core Locations for Pre-Design Studies Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
A lternative F Mod
A ctive F o otprint Area / Core
D esciiption
#
New Core S ta tio n
25
X
26
X
Shallow
RM 6W Long Band
/ Inlet
27
X
28 29
Re Occupy
O ld S ta tio n
X X
S um m aiy Rationale
A ddition al R ationale
Define vertical extent
Horizontally define navigational channel. CS003 was less than 1 foot bgs, with a concentration of 34,800 pg/kg.
Horizontally define navigational channel extent. No core currently
within proposed dredge footprint.
Horizontal extent along nav Better define concentration gradient. Closest cores ~250 feet away is
channel, define vertical extent DGS-08C (in navigational channel, concentration of 1,800,000 pg/kg).
for proximal cores
Downriver of LW M C 11, unbounded sam ple with a concentration of
8,400,000 pg/kg, and DGS-19SC with a concentration of 4,500,000
pg/kg.
Reoccupy LM W C 11 which is vertically unbounded, core w ent down
Define vertical extent
~10 feet bgs with 8,400,000 pg/kg. Next to GS-B5 also unbounded vertically with concentrations of 1,100,000 pg/kg.
Reoccupy C 244 which is vertically unbounded, core went down ~10
Define vertical extent
feet bgs 250 pg/kg PCB. Southern edge of proposed dredge footprint.
RM 6.5E
Blob
30
X
31
X
32
X
33
X
RM7W
Blob
34
X
35
X
Define horizontal extent
No historical cores collected within Alternative F Mod footprint.
Define vertical/horizontal extent in the low spot near
C291
Better define horizontal gradient. Distance between cores is greater than 300 feet. Two of the four closest cores are unbounded vertically with concentrations of 250 pg/kg and 750 pg/kg PCB.
Define vertical extent
Define vertical extent in proposed dredge area around C 3 1 1, DGS37SC, SD072, and C316; these cores are all unbounded vertically and have PAH concentrations >50,000 pg/kg and as high as 570,000
Define vertical and horizontal extent
pg/kgDefine horizontal extent of proposed dredge area around W B-66, which is unbounded vertically and horizontally and has a 2,3,7,8TCDD concentrations as high as 0.0015 pg/kg.
Define vertical extent
Define vertical extent in proposed dredge area around C679, which is unbounded vertically and has a 2,3,7,8-TCDD concentration 0.003
Define vertical extent
pg/kg. Define vertical extent in proposed dredge area around LW MC14, which is unbounded vertically and has a 2,3,7,8-TCDD concentration 0.002 pg/kg; surrounding unbounded samples are W B-37, W B -41, and SD092 with concentrations as high as 0.007 pg/kg.
RM 7.5W Swan Island
36
X
37
X
38
39
X
40
X
41
42
X
43
X
44
X
45
X
Define vertical/horizontal extent
Define vertical/ horizontal extent
Define vertical and horizontal extent of proposed dredge area south of W B-34. W B -34 is unbounded vertically and has a 2,3,7,8-TCDD concentration 0.001 pg/kg. Define vertical and horizontal extent near C688. C688 is unbounded vertically and has a 1,2,3,7,8-PeCDD concentration >0.001 pg/kg.
Reoccupy C690. C690 had concentrations greater than 0.001 of
X
Define vertical extent
2,3,7,8-TCDD and 1,2,3,78-PeCDD is 0.007 pg/kg, and vertical extent
was unbounded to 15 ft below mudline surface.
No existing core in active Inside proposed dredge area has no core samples.
footprint
Sample near SD133 to define vertical extent in proposed dredge area.
Define vertical extent
SD133 was unbounded vertically and had a PCB concentration of 2,400 pg/kg .
X
Define vertical extent
Define vertical extent
Help determine vertical extent and better cover horizontal area which is over 250 feet from next sam ple location.
Define vertical extent / horizontal gradient
Define vertical extent between C702 and C703 (cores are over 400 feet apart) and C702 is unbounded with a max concentrations of 250 pg/kg of PCB.
Define horizontal and vertical extent between C364 and PSY20C
Define horizontal extent
(cores are over 600 feet apart) and have max PCB concentration of >250 pg/kg and 2,300 pg/kg respectively.
Define vertical extent between C372 and PSY18C (cores are over 400
Define vertical extent
feet apart) and have PCB concentrations of ~200 pg/kg and >500 pg/kg respectively. C372 is also unbounded vertically.
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ED 002061 00116433-00012
Table 7b. Rationale for Sediment Core Locations for Pre-Design Studies Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
A lternative F Mod
A ctive F o otprint Area / Core
D esciiption
#
New Core S ta tio n
Re Occupy
O ld S ta tio n
46
X
47
X
48
X
S um m aiy Rationale
A ddition al R ationale
Define vertical extent Define vertical/horizontal
extent
Refine horizontal gradient
Better define vertical gradient between C379 and PSY11C (cores are over 600 feet apart) and have max PCB concentration of >750 pg/kg and >7.5 pg/kg respectively. Better define vertical gradient near C397. C397 is vertically unbounded and had a max PCB concentration of >500 pg/kg. Better define vertical gradient between C405 and SD141 (cores are over 300 feet apart) and both are vertically unbounded. The max concentration between the two cores was >500 pg/kg of PCB.
49
50
X
RM 8 to
long band
8.75W
51
X
52
X
RM 9.8W
RM11E Shallow Area Cores
53
X
54
X
55
X
56
57
X
58 59
60
X
30
X
Define vertical extent in proposed dredge area around C450, which is
X
Unbounded to 10 ft below unbounded vertically and has a PCB concentration 2,200 pg/kg.
ground surface
Define vertical and horizontal extent of proposed dredge area north collect bank sam ple near C431 east of C 431, edge of dredge area over 300 feet from C431 core.
Define vertical extent
Define shallow horizontal extent west of C455. C455 has a max PCB concentration of 6,000 pg/kg.
Define vertical extent
Define vertical extent in proposed dredge area around LW MC19, which is unbounded vertically and has a PCB concentration 2,200pg/kg. No proposed cores in this area or vertically bounded cores in this dredge area.
Define vertical and horizontal extents in proposed dredge area north
east of C738 and C739; both cores are vertically and horizontally
Cores are vertically
unbounded with max concentrations >500 pg/kg of PCB.
unbounded, but there is 10 ft
of clean overburden; horizontal
extent
Better define vertical gradient between C739 and LW MC24. Both
cores are unbounded, with max concentrations greater than 500 pg/kg
of PCB.
Define vertical and horizontal extents in proposed dredge area west of
Define extent
LMW C24. LW M C24 is vertically unbounded with max concentration >750 pg/kg of PCB.
Define horizontal extent south of LM W C24 which is approxim ately 400
X
Define vertical/ horizontal feet from the shoreline and is unbounded vertically with a max
extent
concentration >750 pg/kg of PCB.
Define horizontal extent
Define vertical and horizontal extent within new dredge footprint. Nearby core sam ples C007 or UC01 were shallow cores (less than a couple feet) and UC01 was unbounded with a PCB concentration close to 500 pg/kg.
Reoccupy C003. C003 had a max PCB concentration close to 1,000
X
Define vertical extent
pg/kg and was vertically unbounded.
Reoccupy C023. C023 had a max PCB concentration of 4,300 pg/kg
X
Define vertical extent
and was vertically unbounded.
Define horizontal/vertical extent
Define horizontal and vertical extents between W R-CD-40 and C778. Cores are over 300 feet apart and W R -C D -40 is unbounded vertically with a PCB concentration >7.5 pg/kg.
Define areas
No existing cores in these areas
A bbreviations: bgs - below ground surface; bml - below mudline; COC - contaminant of concern; PAH - polycyclic aromatic hydrocarbons
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Table 8. Data Interpretation and Analysis Plan Portland Harbor Pre-Remedial Design Investigation Work Plan Portland, OR
Data U tilization Current Conditions and Sediment SWACs for
baseline dataset
D e s c rip tio n Generate summary tables and maps with the new 2018 data and re-baseline the river for sediment, SMB fish tissue, and surface water for focused and selected other COCs. Generate sediment SWACs on a site-wide and other spatial scales using Theissen Polygons for the 640-sample plan, and the statistical mean for both the unbiased 428 and 640 sample plans.
Concentration Changes Over Time
Provide plots(s) of the tissue data over time. Provide surface water data with simple data plots of baseline and previous applicable surface water data. Compare the new 2018 data to the 2004 dataset for sediment, tissue (2002, 2007 and 2012), and surface water media and empirically evaluate changes since the Rl: (1) The new sediment SWAC and arithmetic mean of unbiased dataset will be compared to the 2004 data at site-wide and segment-wide scales to look for differences in the last 14 years. (2) Datasets will also be compared to the Downtown/Upstream Area (are the two populations different, how different, and is site recontamination expected?). (3) 87 surface sediment locations will be re-occupied from 2004, and these two populations will be compared for changes. Note: The data permits statistical comparisons at the site-wide, segment-wide, or RM-scales.
Alt F Mod Active SMA Footprint (1)
Downtown/Upstream Baseline
Background Porewater
Confirm the active remedial footprint using new data collected during the PDI. SMA delineation activity to evaluate these data, bathymetry, and applicable historical data will be run through the ROD decision tree to support allocation. Run the new 2018 surface sediment data and bathymetry data through the ROD decision tree to refine the active remedy footprint. The 2018 core data will be combined with RI/FS subsurface coring data to update the conceptual site model understanding of subsurface contamination, collectively these data will also run through the ROD decision tree to refine the active remedy footprint and dredge volume estimate. Changes in sediment elevation will be a modifying factor for volume estimates to inform the 30% design estimates.
Report data separately to EPA by reach (Downtown / Upstream Reach). Evaluate current upriver conditions by SWAC and summary distribution statistics for other media, for future long-term comparative analysis with Site. Generate tables, maps, and summary statistics for all new 2018 data (sediment, SMB tissue, surface water, and sediment traps) as 2018 baseline conditions. These data may be compared to new site data, and qualitatively compared to older downtown/upstream data to evaluate changes and provide a first look at what may be achievable at the site for focused COCs. Provide porewater data to EPA, provide sufficient data to derive porewater background for metals using the passive porewater samples from the upriver reach or other appropriate background areas (see EPA March 13, 2017 framework).
Provide fish tracking data to be presented as a tabular spreadsheet deliverable that includes location, tag IDs, and time stamps for each of the tagged
fish. Data processing for data report limited to tabular and graphical outputs showing locations/tag IDs of fish movement (e.g. heat maps). Evaluate
Fish Tracking and Camera the fish tracking results to evaluate the home range of SMB. Maps, home range estimates, and summary tables will be generated. Note: results may
Survey Results
inform the fish tissue sampling program and the appropriate scale for calculating baseline conditions with respect to fish; refine understanding o f the
FWM and reduce uncertainty about remedy effectiveness for fish tissue recovery and update calculations o f baseline fish consumption risks. Camera
data will be processed and provided with all Personal Identification Information (PII) removed.
Data Design for Long-term
Monitoring
The PDI Evaluation Report will include an evaluation of the 2017/2018 data for purpose of reducing the list of COCs for future monitoring rounds.
Notes: (1) Pre Design Core data collection will have limitations for characterizing final SMA footprint delineation. Accordingly, any final decision on the SMA footprint will be pending full remedial design and confirmation sampling results obtained during remedy implementation.
Abbreviations:
COCs - chemicals of concern; RI/FS - remedial investigation/feasibiIity study; RAO - remedial action objective; ROD - Record of Decision; SWAC - surface weighted average concentrations; SMB - small mouth bass
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