lower duwamish waterway remedial investigation report, maps sec 5-8 ri/final_ldw_ri… ·  ·...

18
Slip 4 Kellogg I. Slip 1 Slip 3 Slip 2 Upper Turning Basin Slip 6 Harbor I. M1 M2 M3 M4 2.2 0.1 5.3 5.2 5.1 4 .9 4 . 8 4 . 7 4 .6 4.5 4.4 4.3 4.2 4.1 3.9 3.8 3.7 3.6 3. 5 3.4 3.3 3 .2 3. 1 2 .9 2 .8 2 .7 2.6 2 .5 2.4 2.3 5. 4 2.1 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 5. 5 0.0 5.0 4. 0 3.0 2 .0 1.0 Prepared by CEH, 07/15/2010; MAP #2379; W:\Projects\00-08-06_Duwamish_RI\data\gis\Phase2 RI\ERA Summary ± Map 5-1. Modeling areas in the LDW used in the fish exposure assessment and the food web model Modeling area M1 M2 M3 M4 Navigation channel River mile LLC Wind Ward environmental 0 0.25 0.5 Miles 0 0.25 0.5 Kilometers

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Slip 4

Kellogg I.

Slip 1

Slip 3

Slip 2

Upper Turning Basin

Slip 6

Harbor I.

M1

M2

M3

M4

2.2

0.1

5.3

5.2

5.1

4.94 .

8

4 .7

4.6

4.5

4.4

4.3

4.2

4.1

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

2.9

2.8

2.7

2.6

2.5

2.4

2.3

5.4

2.1

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

5.5

0.0

5.0

4.0

3.0

2.0

1.0

Pre

pare

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H, 0

7/15

/201

0; M

AP

#23

79; W

:\Pro

ject

s\00

-08-

06_D

uwam

ish_

RI\d

ata\

gis\

Pha

se2

RI\E

RA

Sum

mar

y

±Map 5-1. Modeling areas in the LDW used inthe fish exposure assessment and the foodweb model

Modeling area

M1

M2

M3

M4

Navigation channel

River mile

LLCWindWardenvironmental

0 0.25 0.5Miles

0 0.25 0.5Kilometers

Slip 1

Slip 2

Kellogg I.

Harbor I.

Slip 3

Exposure

Area 1

Exposure

Area 2

2.2

2.4

2.3

2.1

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

2.0

1.0

Slip 4

Slip 6

UpperTurningBasin

Exposure

Area 3

5.1

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

4.1

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

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2.8

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2.6

2.5

2.4

3.0

5.0

4.0

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ap 2

283;

W:\P

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_Duw

amis

h_R

I\dat

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2 R

I\ER

A S

umm

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±Map 5-2. Spotted sandpiper exposure areas in the LDW

Sandpiper foraging habitat quality

Habitat defined for intertidal zone only

High

Poor

No habitat present

Intertidal area not surveyed for sandpiper foraging habitat

Exposure area

Area 1 (RM 0.0 - RM 1.8)

Area 2 (RM 1.1 - RM 3.1)

Area 3 (RM 3.3 - RM 5.0)

Navigation channel

River mile

±

Scale is the same for each inset map

0 1,000 2,000Feet

0 210 420Meters

LLCWindWardenvironmental

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Kellogg I.

Slip 1

Slip 2

DiagonalAve S

restorationarea

Employee access only;area fenced to keep

out public

Steep bank (riprap) with no public access

from upland side

BP Gypsumowns property;

access controlledby guards anddogs; no public

access

Unfencedindustrial propertywith steep riprap-

covered bank

T-105

Harbor I.

1.0

Herring's HousePark

1

32

Total

risk =

2x10-5

Total

risk =

5x10-5

Total

risk =

3x10-5

LAFARGE CORP

LIPSETT CO LLC

PORT OFSEATTLE

PORT OF SEATTLE

ANDERSON, DOROTHY

PORT OF SEATTLE

GLACIER NORTHWEST INC

DUWAMISH SHIPYARD INC

ALASKA MARINE LINES INC

SEATTLE PARKS DEPT

GENERAL RECYCLINGOF WASHINGTON LLC

BPB GYPSUM INC

KING COUNTY

FEDERALGOVERNMENT

PORT OFSEATTLE

SAINT-GOBAINCONTAINERS

KING COUNTY

KING COUNTY

KING COUNTY

KING COUNTY

LIPSETT CO LLC

PORT OF SEATTLE

PORT OF SEATTLE

GENERAL RECYCLINGOF WASHINGTON LLC

PORT OFSEATTLE

PORT OFSEATTLE

PORT OFSEATTLE

CHEMITHON CORP

PORT OF SEATTLE

GLACIER NORTHWEST INC

LONE STARINVESTORS LLP

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0.1

0.2

0.3

0.4

0.6

0.5

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Slip 3

Slip 4

Unfenced; employees have access to shoreline; signs designating shallow water, no diving, and no lifeguard on duty indicate potentialfor human use; littered

steep bank

Public access trail along bank; muddy shoreline; difficult

to access

a

Employee access only;building immediately adjacent to shoreline

Difficult access;steep riprap bank

1st Ave S Brid

ge

South Park Bridge

Member access

only

Easy public accessat either end of area;shallow bank, mud

flats; employeeaccess only in the

middle, but public couldtheoretically accessfrom either end at

low tide

2.0

3.0

Steep riprap banks, docks

and piers

4

6

Residentialaccess

Residentialaccess

DuwamishWaterway

Park

5

Slip 2

Total

risk =

3x10-5

Total

risk =

9x10-6

Total

risk =

8x10-6

SOUTH PARKMARINA LTDPARTNERS

SILVER BAYLOGGING INC

BOEING

BOEING

SHALMAR GROUP

FOX AVENUE LLC

ESI MGT

GUIMONT GEMO/WILLIAM P

HOPKINS,FREDERICK J

FAM TRS

BOEING

R & A PROPERTIES

PORT OF SEATTLE

LONE STARINVESTORS LLP

GILMUR,JAMES

SEATTLE DOT

PORT OFSEATTLE STATE OF

WASHINGTON

SEATTLE DOT

DUWAMISH TRIBE USA IN TRUSTSEATTLE DOT

MUCKLESHOOTTRIBE

RANIER PETROLEUM CORPORATION

SCS HOLDINGS INC

CLPF-SEATTLEDISTRIBUTION

CENTER LP

SEATAC MARINEPROPERTIES LLC

DOUGLASMANAGEMENT

COMPANY

TROTSKY,HERMAN &

JACQUALINE

HALVORSEN,MARYCATHERINE

BOYERTOWING

INC

BOYERTOWING

INC

CROWLEY MARINE SERVICES INC

LUKAS,BILLIE MACKSENE

KING COUNTY

ELM GROVE LLC

SOUTH PARKMARINA LTDPARTNERS

BOEING

JORGENSEN FORGE CORP

PORT OFSEATTLE

BOEING

3.7

3.6

3.5

2.5

2.4

2.3

1.8

1.9

3.4

3.3

3.2

3.1

2.9

2.8

2.7

2.6

±±

Pre

pare

d by

CE

H, 0

7/15

/201

0; M

ap 2

602;

W:\P

roje

cts\

00-0

8-06

_Duw

amis

h_R

I\dat

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s\P

hase

2 R

I\HH

RA

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UpperTurningBasin

Slip 6

Boeingemployee

access only

Fenced;no public access; steep riprap bank

Fenced

Difficult publicaccess

Memberaccess only

No public access,but area is unfenced

Nopublicaccess

Path alongshore above

riprap-covered steep bank

S. Turning Basin 3 Public Park

Easy accessvia trail

at Hamm Creek

Restoration Area

Muckleshoot Tribe

fenced property

Oxbow Brid

ge

102nd St Brid

ge

7

8

Total

risk =

5x10-6

Total

risk =

7x10-6

PORT OF SEATTLE

SEATTLECITY LIGHT

SEATTLECITY LIGHT

SEATTLECITY LIGHT

MELLON DESIMONE

MUCKLE-SHOOTINDIANTRIBE

BOEING

DELTA MARINE

MELLON TRUSTOF WA-DESIMONE

BOEING

MELLON TRUST REAL ESTATE

BOEING

BOEING

SEATTLE CITY LIGHT

MERRILL CREEK HOLDINGS LLC

CONTAINER PROPERTIES LLC

JORGENSENFORGE CORP

BOEING

BOEING

SEA KINGINDUSTRIALPARK LLC

BOEING

MUSEUMOF FLIGHT

FOUNDATION

BOEING

4.9

4.8

4.4

3.9

4.0

4.7

3.7

4.5

4.3

4.2

4.1

3.8

6

Map 6-1. LDW intertidal areas included in the beach play direct sediment contact exposure scenarios and excess cancer risk estimates

Beach playexposure area

1

2

3

4

5

6

7

8

Intertidal conditions (> -2 ft MLLW)

Marsh

Mud

Riprap

Subtidal (< -2 ft MLLW)

Road

Bridge

Building

Dock/pier

Marina

Taxparcel

a

Navigation channel

River mile

Scale is the same for each inset map

0 0.1 0.2Miles

0 0.1 0.2KilometersLLCWindWard

environmental

Risk = excess cancer risk estimatecPAH = carcinogenic PAHsCOPC = chemical of potential concernD/F TEQ = dioxin and furan toxic equivalent (data available only at beaches 4, 5 and 7)

Excess cancer risk charts for individual beaches compare risks bychemical as a fraction of total risk from all COPCs. Chemicals other thanPCBs, arsenic, cPAHs, and dioxins and furans are not shown on chartsbecause they contribute 1% or less to the total risk. The size of each chartis proportional to the total risk, as defined by the scale in the legend.a Tax parcel information was provided in 2008 by Seattle Public Utilitiesand King County. Some tax parcel polygons were edited to conform tothe LDW shoreline presentation. A comprehensive survey of property-owner records was not conducted.b cPAH concentrations are based on benzo(a)pyrene equivalents. TEQswere calculated with mammalian PEFs for seven individual PAHcompounds (California EPA 1994), using one-half the RL for undetectedcompounds. Because of the potential for increased susceptibility ofchildren to carcinogens with mutagenic activity, as described in EPAguidance (EPA 2005), the risk estimate for beach play RME for cPAHsis based on dose adjustments across the 0-to-6-year age range ofchildren. See Section B.5.1 for more information.

±

!

Intertidal baseline surfacesediment sampling location

Excess cancer risk forindividual beaches

ArseniccPAHb

Total PCBs

D/F TEQ

Total risk = 5 x 10-5

0.9

0.7

0.8

Park are

2.1

2.2

4.

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Kellogg I.

Slip 1

Slip 2

T-105

Harbor I.

1.0

Herring's HousePark

LAFARGE CORP

LIPSETT CO LLC

PORT OFSEATTLE

PORT OF SEATTLE

ANDERSON, DOROTHY

PORT OF SEATTLE

GLACIER NORTHWEST INC

DUWAMISH SHIPYARD INC

ALASKA MARINE LINES INC

SEATTLE PARKS DEPT

GENERAL RECYCLINGOF WASHINGTON LLC

BPB GYPSUM INC

KING COUNTY

FEDERALGOVERNMENT

PORT OFSEATTLE

SAINT-GOBAINCONTAINERS

KING COUNTY

KING COUNTY

KING COUNTY

KING COUNTY

LIPSETT CO LLC

PORT OF SEATTLE

PORT OF SEATTLE

GENERAL RECYCLINGOF WASHINGTON LLC

PORT OFSEATTLE

PORT OFSEATTLE

PORT OFSEATTLE

CHEMITHON CORP

PORT OF SEATTLE

GLACIER NORTHWEST INC

LONE STARINVESTORS LLP

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0.1

0.2

0.3

0.4

0.6

0.5

0.0

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Slip 3

Slip 4

a

1st Ave S Brid

ge

South Park Bridge

2.0

3.0

Slip 2

SOUTH PARKMARINA LTDPARTNERS

SILVER BAYLOGGING INC

BOEING

BOEING

SHALMAR GROUP

FOX AVENUE LLC

ESI MGT

GUIMONT GEMO/WILLIAM P

HOPKINS,FREDERICK J

FAM TRS

BOEING

R & A PROPERTIES

PORT OF SEATTLE

LONE STARINVESTORS LLP

GILMUR,JAMES

SEATTLE DOT

PORT OFSEATTLE STATE OF

WASHINGTON

SEATTLE DOT

DUWAMISH TRIBE USA IN TRUSTSEATTLE DOT

MUCKLESHOOTTRIBE

RANIER PETROLEUM CORPORATION

SCS HOLDINGS INC

CLPF-SEATTLEDISTRIBUTION

CENTER LP

SEATAC MARINEPROPERTIES LLC

DOUGLASMANAGEMENT

COMPANY

TROTSKY,HERMAN &

JACQUALINE

HALVORSEN,MARYCATHERINE

BOYERTOWING

INC

BOYERTOWING

INC

CROWLEY MARINE SERVICES INC

LUKAS,BILLIE MACKSENE

KING COUNTY

ELM GROVE LLC

SOUTH PARKMARINA LTDPARTNERS

BOEING

JORGENSEN FORGE CORP

PORT OFSEATTLE

BOEING

GILMUR,JAMES

3.7

3.6

3.5

3.4

3.3

3.2

2.9

2.8

2.7

2.6

2.5

2.4

2.3

1.8

1.9

3.1

±±

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CE

H, 0

7/15

/201

0; M

ap 2

245;

W:\P

roje

cts\

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8-06

_Duw

amis

h_R

I\dat

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s\P

hase

2 R

I\HH

RA

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UpperTurningBasin

Slip 6

Oxbow Brid

ge

102nd St Brid

ge

PORT OF SEATTLE

SEATTLECITY LIGHT

SEATTLECITY LIGHT

SEATTLECITY LIGHT

MELLON DESIMONE

MUCKLE-SHOOTINDIANTRIBE

BOEING

DELTA MARINE

MELLON TRUSTOF WA-DESIMONE

BOEING

MELLON TRUST REAL ESTATE

BOEING

BOEING

SEATTLE CITY LIGHT

MERRILL CREEK HOLDINGS LLC

CONTAINER PROPERTIES LLC

JORGENSENFORGE CORP

BOEING

BOEING

SEA KINGINDUSTRIALPARK LLC

BOEING

MUSEUMOF FLIGHT

FOUNDATION

BOEING

4.9

4.8

3.7

4.5

4.4

4.3

4.1

3.9

3.8

4.0

4.7

4.2

6

Map 6-2. LDW intertidal areas included in the clam harvesting direct sediment contact exposure scenarios

!

Intertidal baseline surfacesediment sampling location

Clamming access

Shoreline

Boat only

Intertidal conditions (> -2 ft MLLW)

Marsh

Mud

Riprap

Subtidal (< -2 ft MLLW)

Bridge

Building

Dock/Pier

Marina

Tax parcela

Road

Navigation channel

River mile

Scale is the same for each inset map

0 0.1 0.2Miles

0 0.1 0.2KilometersLLCWindWard

environmental

aTax parcel information was provided in 2008 by Seattle Public Utilitiesand King County. Some tax parcel polygons were edited to conform tothe LDW shoreline presentation. A comprehensive survey of property-owner records was not conducted.

±

0.9

0.7

0.8

Park are

2.1

2.2

4.

!(!(!(

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!(

!(!(

!(

!(

!(

!(

!(

!(

!(!(

!(

!(!(

!(

!(!(!(

!(

!(

!(

!(

!(

!(

!(

!(

!( !(

!(

!(

!(

!(

!(

!(

!(!(!(!(!(!(!(!(!(!(!(

!(!(!(!(!(!(!(!(!(!(!(

PortTownsend

WhidbeyIsland

CamanoIsland

PortAngeles

Seattle

BainbridgeIsland

Bremerton

VashonIsland

Tacoma

Vancouver Island, BC

West Beach

CaseInlet

DabobBay

SamishBay

SaratogaPassage

Carr Inlet

DiscoveryBay

SequimBay

Rich Passage

Freshwater Bay Dungeness Bay

WollocherBay

King Co.

Skagit Co.

Whatcom Co.

Pierce Co.

Clallam Co.

Jefferson Co.

Snohomish Co.

Grays HarborCo.

Mason Co.

Kitsap Co.

Island Co.

San Juan Co.

±

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0 5 10Miles

0 5 10KilometersLLCWindWard

environmental

Map 7-1. Locations of surface sediment PCB and dioxin and furan data available for natural background from reference areas prior to 2008

Straight ofJuan de Fuca

!(

PCB and dioxin and furansediment sample location

!( PCB sediment sample location

Background sampling area

Waterbody or river

Note: Puget Sound 2008 survey locations are shown on Map 7-4.

!(!(!(

!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(

!(!(!(!(

!(!(!(

!(!(

!(

!(

!(

!(!(

!(

!(

!(!(!(

!(

!(!(

!(

!(

!(

!(

!(

!(

!(

!(!(!(!(

!(

!(

!(!(

!(

!(!(!(!(!(!(!(

!(!(

!(!(

!(

!(!(!(

!(

!(

!(

!(!(

!(

!(

!(

!(

!(!(

!(

!(

!(

!(!(!(!(!(!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!( !(

!(

!(

!(

!(

!(!(

!(

!(!(

!(!(

!(

!(

!(

!(

PortTownsend

WhidbeyIsland

CamanoIsland

PortAngeles

Seattle

BainbridgeIsland

Bremerton

VashonIsland

Tacoma

Vancouver Island, BC

West Beach

CaseInlet

DabobBay

SamishBay

SaratogaPassage

Carr Inlet

DiscoveryBay

SequimBay

Rich Passage

Freshwater Bay Dungeness Bay

WollocherBay

Mason Co.

Jefferson Co.

King Co.

Clallam Co.

Skagit Co.

Kitsap Co.

Snohomish Co.

Island Co.

Pierce Co.

Whatcom Co.

San Juan Co.

Grays Harbor Co.

Thurston Co.

±

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0 5 10Miles

0 5 10Kilometers

LLCWindWardenvironmental

Map 7-2. Locations of surface sediment arsenic data available for natural background fromreference areas prior to 2008

Straight ofJuan de Fuca

!( Arsenic sediment sample location

Background sampling area

Waterbody or river

Note: Puget Sound 2008 survey locations are shown on Map 7-4.

!(!(!(

!(!(!(

!(

!(

!(!(!(

!(!(!(!(

!(!(!(!(

!(

!(!(!(!(

!(

!(

!(

!(!(

!(

!(!(

!(

!(

!(!(!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!( !(

!(!(!(!(

!(

!(

!(!(

!(

!(!(!(!(!(!(!(

!(!(

!(!(

!(

!(!(!(

!(

!(!(

!(

!(

!(

!(

!(

!(!(

!(

!(

!(

!(!(!(!(!(!(!(!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!(

!( !(

!(

!(

!(

!(

!(!(

!(

!(

!(

!(!(

PortTownsend

WhidbeyIsland

CamanoIsland

PortAngeles

Seattle

BainbridgeIsland

Bremerton

VashonIsland

Tacoma

Vancouver Island, BC

West Beach

CaseInlet

DabobBay

SamishBay

SaratogaPassage

Carr Inlet

DiscoveryBay

SequimBay

Rich Passage

Freshwater Bay Dungeness Bay

WollocherBay

Mason Co.

Jefferson Co.

King Co.

Clallam Co.

Skagit Co.

Kitsap Co.

Snohomish Co.

Island Co.

Pierce Co.

Whatcom Co.

San Juan Co.

Grays Harbor Co.

Thurston Co.

±

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0 5 10Kilometers

LLCWindWardenvironmental

Map 7-3. Locations of surface sediment cPAH dataavailable for natural background from referenceareas prior to 2008

Straight ofJuan de Fuca

!( cPAH sediment sample location

Background sampling area

Waterbody or river

Note: Puget Sound 2008 survey locations are shown on Map 7-4.

#

####

#

#

#

#

#

#

#

#

#

#

PortTownsend

WhidbeyIsland

CamanoIsland

PortAngeles

Seattle

BainbridgeIsland

Bremerton

VashonIsland

Tacoma

Vancouver Island, BC

King Co.

Skagit Co.

Whatcom Co.

Pierce Co.

Clallam Co.

Jefferson Co.

Snohomish Co.

Grays Harbor Co.

Mason Co.

Thurston Co.

Kitsap Co.

Island Co.

San Juan Co.

SS_2

SS_1

SS_0

HC_6

HC_3

HC_2

HC_1

HC_0

AI_1

SJI_3

SJI_1

SJI_0

SJF_3

SJF_2

CPS_5

CPS_4

CPS_3

CPS_1CPS_0

SS_9_C

SS_8_C

SPSB_3

SPSB_2

SPSB_1

SPSB_0

SCPS_5

SCPS_3

SCPS_2

SCPS_1

PSPS_9

PSPS_8

PSPS_3

PSPS_2

PSPS_1

NCPS_4

NCPS_3

NCPS_2

NCPS_1

NCPS_0

AI_5_C

SJI_8_C

SJF_9_C

R_SAM_5

R_SAM_4

R_SAM_3R_SAM_1

R_SAM_0

R_HOL_7

R_HOL_4

R_HOL_3

R_HOL_1

R_HOL_0

R_DAB_5

R_DAB_2

R_DAB_1

R_DAB_0

R_CAR_5

R_CAR_4

R_CAR_1

R_CAR_0

AI_13_C

AI_11_C

SPSB_8_C

SJF_10_C

SCPS_10_C

R_DAB_7_C

R_CAR_6_C

AI_20_C_GS

SJI_20_C_GS

SJF_12_C_GS

±

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0 5 10KilometersLLCWindWard

environmental

Map 7-4. Locations of surface sediment dataavailable for arsenic, PCBs, cPAHs, and dioxinsand furans from the Puget Sound 2008 surveyfor natural background consideration

Puget Sound 2008 survey location

AI

CPS

HC

NCPS

PSPS

R_CAR

R_DAB

R_HOL

# R_SAM

# SCPS

# SJF

SJI

SPSB

SS

Waterbody

Straight ofJuan de Fuca

Map 7-5. Surface sediment sampling locations for arsenic, PCBs, cPAHs, or dioxins and furans - RM 5.0 to RM 7.0

Legend

Navigation channel

cPAH sample location

PCB sample location

Arsenic sample location

#*

River Mile marker

Dioxin and furan sample location")

!(

0 100 20050Meters

0 500 1,000250Feet

Notes:1. An additional sample collected from Springbrook Creek (which enters the Duwamish River at RM 10.2) was included in the dioxin and furan dataset for samples from RM 5.0 - 7.0, but is not shown on this map.

7.1

6.7

7.2

6.8

6.9

6.66.56.

46.3

6.2

6.1

5.9

5.8

7.3

5.6

5.5

5.4

5.3

5.2

5.1

4.9

4.8

5.7

6.0

5.0

7.0

4.7

Map 7-6. Locations of subsurface sediment samples collected as part of the 1990 to 2003 USACE dredged material characterization events±

Legend

Composite core location

Single core location

Navigation channel

River mile

0 500 1,000250Meters

Notes:1. Sampling data provided by USACE (2007).2. Dredge footprints from USACE dredge summary and analysis reports.3. Single sample locations represent stations where a single core was collected

(generally from 0 to 4 ft below the mudline), composited over the length of the core,and analyzed. Composite sample locations represent stations where single coresfrom each of those stations (again, generally from 0 to 4 ft below the mudline) were firstcomposited over the length of the core and then composited with the samples from the coresat other stations prior to analysis.

4. Stations downstream of RM 4.0 not shown.

1997 USACE dredging eventand 1996 core locations

1997 dredging footprint

4.0

5.0

3.0

4.3

3.2

3.4

3.3

4.6

4.5

4.4

3.9

4.1

4.2

4.7 4.8

3.6

4.9

3.1

3.5

5.2

5.1

3.7

3.8

5.3

Core C1

1990 USACE dredging eventand 1990 core locations

4.0

3.0

4.3

3.4

3.3

4.5

4.4

4.6

4.2

4.1

3.9

4.8

4.7

3.6

4.9

3.5

3.7

3.83.2

1990 cores C7,C8

1990 dredging footprint

1992/1994 USACE dredging eventand 1991 core locations

4.0

3.0

4.3

3.2

3.4

3.3

4.6

4.5

4.4

3.9

4.1

4.2

4.7 4.8

3.6

4.9

3.1

3.5

5.2

5.1

3.7

3.8

5.3

Core C1

Core C2

1992 dredging footprint

1994 dredging footprint

1996 USACE dredging eventand 1995 core locations

4.0

3.0

4.3

3.23.3

3.4

4.5

4.4

4.6

4.2

4.1

3.9

4.8

4.7

3.6

4.9

3.5

5.25.1

3.8

3.7

1996 dredging footprint

4.0

3.0

4.3

3.23.3

3.4

4.5

4.4

4.6

4.2

4.1

3.9

4.8

4.7

3.6

4.9

3.5

5.25.1

3.8

3.7

1999/2002 USACE dredging eventand 1998 core locations

Cores C2,C3

Core C1

1999 dredging footprint

2002 dredging footprint

4.0

5.0

3.0

4.3

3.2

3.4

3.3

4.6

4.5

4.4

3.9

4.1

4.2

4.7 4.8

3.6

4.9

3.1

3.5

5.2

5.1

3.7

3.8

5.3

2004/2007 USACE dredging eventand 2003 core locations

2007 dredging footprint

2004 dredging footprint

Map 7-7. Upstream surface water sampling locations

Duwamish River at E Marginal Way S

Green River at Fort Dent

5

405

5

5

99

509

900

599

518

181

509

599

99

Lake Washington

Harbor Island

Kellogg Island

UpperTurningBasin

Southern Boundary of LDW Study Area

Northern Boundary of LDW Study Area

Lower DuwamishW

aterway

0 0.5 10.25Miles

0 0.5 10.25Kilometers

Legend

Navigation channel

King County surface water sampling location

Interstate highway

State highway

405

181

�)�)

�)�)

�)

�)

�)�)

�)

�)

�)

�)�)�)

LakeWashington

PugetSound

Lake Union

ElliottBay

LowerDuwamish Waterway

Seattle

MercerIsland

Sammamish R.

Cedar R.

1a 187 J 1b 63.1 J

2a 13.7 J2b 18.9 J

9a 5.46 J9b 26.1 J

8 53.4 J

3 13.2 J

7 2.59 J

6 2.23 J

5a 14.1 J5b 14.5 J

4 14.7 J

1

9

2

5

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Map 7-8. Dioxin and furan TEQs in surface sediment samples from the greater Seattle area

LLCWindWardenvironmental

Dioxin and furan TEQs were calculated from individual dioxin and furan concentrations withmammalian TEFs, using ½ the reporting limit for undetected dioxin and furan congeners. TheTEQ at location 3 is the average of the original sample value and the field duplicate sample value.

Centroid location numberDioxin and furan TEQ (ng/kg dw)J: estimated

13.2 J3

±0 1.5 3

Miles

0 2.5 5Kilometers

�)

�)

�)

�)

#*

!(

#*

!(

#*#*

#*#*

#*

#*

#*

#*

#*

!(

!(

#*

!(

#*

#*

#*

!(#*

#*

!(

#*

#*

!(

#*

!(

#*

!(

#*

#*

#*

!(

#*

#*

#*

[�

!.

!.

!.

!.

Bremerton

Seattle

Camano Island

WhidbeyIsland

PortTownsend

PortAngeles

Tacoma

KitsapCounty

KingCounty

PierceCounty

SkagitCounty

VashonIsland

JeffersonCounty

ClallamCounty

SnohomishCounty

IslandCounty

MasonCounty

Whatcom County

British Columbia

Vancouver Island

Olympia

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±Map 7-9. Greater Puget Sound samplinglocations for English, rock, and flathead soleanalyzed for PCBs

Fish tissue sample locations

!( Near-urban English sole (West et al. 2001)

!. Non-urban English sole (West et al. 2001)

[�Non-urban English and flathead sole (Gahler et al. 1982; as cited in Cubbage 1992)

#* Non-urban English sole (Era-Miller 2006)

�) Near urban rock sole (Era-Miller 2006)

�) Non-urban rock sole (Era-Miller 2006)

LLCWindWardenvironmental

0 10 20Miles

0 10 20Kilometers

�/

�/�/

�/

�/

�/

�)

�)

�)

�)

!.

!(

!(

!(

#*

#*

Bremerton

Seattle

Camano Island

WhidbeyIsland

PortTownsend

PortAngeles

Tacoma

KitsapCounty

KingCounty

PierceCounty

SkagitCounty

VashonIsland

JeffersonCounty

ClallamCounty

SnohomishCounty

IslandCounty

MasonCounty

Whatcom County

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±Map 7-10. Greater Puget Sound samplinglocations for rockfish species analyzed forPCBs

Rockfish tissue sample locations

!( Near-urban copper rockfish (West et al. 2001)

!. Non-urban copper rockfish (West et al. 2001)

�) Near-urban quillback rockfish (West et al. 2001)

�/ Non-urban quillback rockfish (West et al. 2001)

#* Non-urban yelloweye rockfish (West et al. 2001)

LLCWindWardenvironmental

0 7.5 15Miles

0 7.5 15Kilometers

#*

#*

#*

#*

#*#*

#*#*

#*

#*

!( !(

�/

�/

�/

�/�/

�/�/

�/

Bremerton

Seattle

Camano Island

WhidbeyIsland

PortTownsendPort

Angeles

KitsapCounty

VashonIsland

JeffersonCounty

IslandCounty

MasonCounty

Vancouver Island

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±

Crab and clam tissue sampling locations

�/ Butter clam (Ecology 2000)

�/ Dungeness crab (Ecology 2000)

�/ Littleneck clam (Ecology 2000)

!(Dungeness crab, geoduck, and horse clam (Malcom Pirnie 2007)

#*Butter clam (King County 1995; 2000; 2001; 2005; 2006)

LLCWindWardenvironmental

0 5 10Miles

0 5 10Kilometers

Map 7-11. Greater Puget Sound samplinglocations for crab and clam species analyzedfor PCBs

!(

!(

!(

!(

!(

�)

�)

�)

�)

�)

�)

BainbridgeIsland

Puget Sound

Vashon Island

Olympic PenninsulaOlympic

NationalPark

!(

WhidbeyIsland

!(

!( Port Townsend

Asarco Smelter

Bremerton

!(Olympia

tu101

tu16

!( Port Angeles

��5

��405

��405

��5

��5

��5

tu101

tu2

SP

BI

VI

DU

EP

BL

Seattle

Tacoma

Everett

BellevueBellevue

Federal WayFederal Way

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±Map 7-12. Background areas where tissuesampling for arsenic was conducted as partof the RI

LLCWindWardenvironmental

0 6 12Miles

0 6 12Kilometers

�) Background clam sampling areasBI Fay Bainbridge State Park (2004)SP Seahurst Park, Burien (2004)DU Dungeness NWR (2005)VI Vashon Island (2005)

�) Background English sole, shiner surfperch,and slender crab sampling areas BL Blake Island (2004)EP East Passage (2004)

Area potentially affected byAsarco smelter emissions

a

Duwamish River basin

a Area-Wide Soil Contamination Task Force 2003; based on soil data

Slip 1

Slip 2

Kellogg I.

Harbor I.

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

1.0

C5

C4

C1

C3-2

C2-2

C2-1

C5_North

C4_North

C1_North

C3-2_North

C3-1_North

C2-1_North

C3-1

C2-2_North Slip 4

Slip 3

PublicAccess

C11

C12�)

C7_NorthC8_North

2.2

3.9

3.7

3.6

3.5

3.4

3.3

3.2

3.1

2.9

2.8

2.7

2.6

2.5

2.4

2.3

3.8

2.1

1.9

2.0

3.0

C9C8

C6

C5

C7-2

C7-1

C10-2

C10-1

C6_North

C5_North

C12_North

C11_North

C10-2_North

Slip 6

Upper TurningBasin

5.7

5.6

5.5

5.4

5.3

5.2

5.1

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

4.1

3.9

4.0

5.0

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±Map 8-1. Clam sampling locations and habitatrelative to IDW interpolation of arsenicconcentrations in surface sediment

2004 clam sampling location

2007 clam sampling locationa

Intertidal clam areab

Intertidal clam area plus buffer areab

Interpolated arsenic concentration

in surface sediment (mg/kg dw)c

> 25

> 14 and ≤ 25

> 11 and ≤ 14

> 8.6 and ≤ 11

≤ 8.6

Outside the LDW study area

River mile

Navigation channel

±

±

Scale is the same for each inset map

0 0.1 0.2Miles

0 0.1 0.2Kilometers

LLCWindWardenvironmental

95th percentile = 2575th percentile = 1450th percentile = 1125th percentile = 8.6

a The coordinates for locations C9_North and C10-1_North were notcorrectly recorded because of a malfunctioning GPS, and do notappear on this map.b Areas used to estimate the sediment SWAC in clam/tissue sedimentregressions.c Percentiles were calculated on an area basis as the concentration atwhich a particular percentage of the LDW area has interpolated valuesless than or equal to that concentration (e.g., the 95th percentile is theconcentration at which 95% of the LDW area has interpolatedconcentrations ≤ 25 mg/kg dw). Interpolated concentrations werecalculated including locations with non-detected values. For locationswith non-detects, a value of one-half the RL at that location was used.

Slip 1

Slip 2

Kellogg I.

Harbor I.

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

1.0

C5

C4

C1

C3-2

C2-2

C3-1

C2-1Slip 4

Slip 3

2.2

3.9

3.7

3.6

3.5

3.4

3.3

3.2

3.1

2.9

2.8

2.7

2.6

2.5

2.4

2.3

3.8

2.1

1.9

2.0

3.0

C9C8

C6

C5

C7-2C7-1

C10-2C10-1

Slip 6

Upper TurningBasin

5.7

5.6

5.5

5.4

5.3

5.2

5.1

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

4.1

3.9

4.0

5.0

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±Map 8-2. Clam sampling locations and habitatrelative to IDW interpolation of cPAHconcentrations in surface sediment

2004 clam sampling locationa

Intertidal clam areab

Intertidal clam area plus buffer areab

Interpolated cPAH concentration

in surface sediment (µg/kg dw)c

> 1,100

> 460 and ≤ 1,100

> 260 and ≤ 460

> 130 and ≤ 260

≤ 130

Outside the LDW study area

River mile

Navigation channel

±

±

Scale is the same for each inset map

0 0.1 0.2Miles

0 0.1 0.2Kilometers

LLCWindWardenvironmental

95th percentile = 1,10075th percentile = 46050th percentile = 26025th percentile = 130

a Clams were collected in 2007 but were not analyzed for cPAHs.b Areas used to estimate the sediment SWAC in clam tissue/sedimentregressions.c Percentiles were calculated on an area basis as the concentration atwhich a particular percentage of the LDW area has interpolated valuesless than or equal to that concentration (e.g., the 95th percentile is theconcentration at which 95% of the LDW area has interpolatedconcentrations ≤ 1,100 µg/kg dw). Interpolated concentrations werecalculated including locations with non-detected values. cPAHconcentrations are based on benzo(a)pyrene equivalents. TEQs werecalculated with mammalian PEFs for seven individual PAH compounds(California EPA 1994), using one-half the RL for undetected compounds.