National Mussel Watch Monitoring of the California Coast

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National Mussel Watch Monitoring

of the California Coast A collaborative effort between NOAA and California

Dominic Gregorio*, Yujie Jin*, Nathan Dodder**

*State Water Resources Control Board

** Southern California Coastal Water Research Project

1

California Water Quality Monitoring Council Meeting

August 29, 2012

NOAA National Mussel Watch Program

• Historic data, years 1986-2009

• California collaboration initiated in 2007

• Total of 71 sites along CA coastline

• Resident mussels

• Historically, 150 contaminants monitored

To support ecosystem-based management and describe the status and trends of contaminants

2

Why Mussel Watch?

• Mussels are filter feeding bivalves

• Mussels are excellent concentrators of bioaccumulative

pollutants

• Mussels are dominant organisms in rocky intertidal

environments and are important members of the marine

food chain

3

Historical Data

1986 - 2009

4

5

DDT Concentration 2007-2009 at ASBS

0.01

0.1

1

10

100

1000

10000

Po

int

La

Jo

lla

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pp

s R

ee

f

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nd

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uth

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nd

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sta

l C

ove

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te B

ea

ch

New

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rt B

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int

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me

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nd

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z I

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irs

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go

on

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lia P

. B

urn

s

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int

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bos

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el B

ay

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cific

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ve

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rs P

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ye

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rstle

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ch

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ad

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helte

r C

ove

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ma

th R

.

Site

Concentr

atio

n (

ppb/d

ryw

eig

ht)

ASBS Median85 percentile

South North

DDT Status (2007-2009 samples, in or adjacent to ASBS)

Highest concentration statewide

Total DDT Concentration 2007-2009 at enclosed bay and open coastal non ASBS

0

50

100

150

200

250

300

350

400

450T

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na

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dd

ing

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ek

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bo

ldt

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y jett

y

Cre

sce

nt C

ity

Sites

Concentr

ation (

ppb/

dry

weig

ht)

Encolosed bay

Open Coastal non ASBS

Median

85 percentile

6

South North South South North

DDT Status (2007-2009 samples, coast and enclosed bays)

7

DDT trends

Significant decrease at Royal

Palms (White Point)

Highest concentration

Increasing trend,

but not significant

DDT Status and Trends (1986-2009)

8

• Highest DDT concentration in the state was at San

Francisco Bay Emeryville site.

• DDT declined at 26 sites, significantly declined at 13

sites.

• Biggest downward trend at Royal Palms (White Point) on

the Palos Verdes Peninsula

Total BT trend in SF Bay

9

• Total BT declined at 33 out of 35 stations,

• 18 out of 35 stations had significant declines.

• This is undoubtedly due to the phase out of TBT based

hull coatings.

10

Total Butyltin Trend (1986-2005 samples)

Total PCB Concentration 2007-2009 at enclosed bay and open coastal non ASBS

0

100

200

300

400

500

600

700

800

900T

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ive

r E

stu

ary

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nd

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ra B

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ge

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n B

ay

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ua

he

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on

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port

bay P

CH

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dg

e

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n P

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ro H

arb

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each

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ng

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ch

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ta B

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oyo H

on

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n S

ime

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t. 2

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8

Sa

n S

ime

on P

t. 2

00

9

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nte

rey B

ay-

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ss L

and

ing

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nte

rey B

ay-

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ruz

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int

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na

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dd

ing

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ek

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reka

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bo

ldt

Ba

y jett

y

Cre

sce

nt C

ity

Sites

Concentr

ation (

ppb/

dry

weig

ht)

Encolosed bay

Open Coastal non ASBS

Median

85 percentile

11

North South North South

PCBs Status (2007-2009 samples, coast and enclosed bays)

Highest concentration

← statewide

12

PCBs Trend PCB trends

Significant decrease at Royal

Palms (White Point)

Significant decrease at San

Francisco Bay (San Mateo

Bridge)

PCBs Status and Trends (1986-2009)

• Highest concentrations at two sites in San Diego Bay

• PCBs had either no trend or declined at most stations.

• 21 showed no significant trend

• 6 exhibited significant declines.

• Largest statistically significant decline was at Royal

Palms

13

Total PAH Concentration 2007-2009 at enclosed bay and open coastal non ASBS

1

10

100

1000

10000

100000

Tijua

na R

ive

r E

stu

ary

SD

Ba

y C

oro

nad

o B

rid

ge

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y H

arb

or

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nd

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ntu

ra B

rid

ge

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sio

n B

ay

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ua

he

dio

nda

la

go

on

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port

bay P

CH

Bri

dg

e

Sa

n P

ed

ro H

arb

or

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hin

g P

ier

Lon

g B

each

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ah

eim

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ng

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s R

ive

rmou

th

Ma

rin

a D

el R

ey

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n L

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n L

uis

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Ba

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00

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rro B

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um

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an

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00

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Bay Y

erb

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uen

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mery

ville

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ma

les B

ay

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reka

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mo

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r.

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eria

l B

each

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iff

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ef

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ansid

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a P

oin

t

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los V

erd

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ond

o B

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ch

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nta

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ica B

ay

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ria

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te B

ea

ch

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int

San

ta B

arb

ara

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oyo H

on

do

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n S

ime

on P

t. 2

00

8

Sa

n S

ime

on P

t. 2

00

9

Mo

nte

rey B

ay-

Mo

ss L

and

ing

Mo

nte

rey B

ay-

Sa

nta

C

ruz

Po

int

Are

na

Pu

dd

ing

Cre

ek

Eu

reka

-Hum

bo

ldt

Ba

y jett

y

Cre

sce

nt C

ity

Sites

Concentr

ation (

ppb/

dry

weig

ht)

Encolosed bay

Open Coastal non ASBS

Median

85 percentile

14

North South North South

Highest concentration

statewide →

PAH Status (2007-2009 samples, coast and enclosed bays)

Total PAHs Trends (1986-2009)

Trend of Total PAHs concentration at San Simeon Point

San Simeon Point

y = 4.7547x - 9428

R2 = 0.4251

0

50

100

150

200

1980 1985 1990 1995 2000 2005 2010 2015Year

Co

nc

en

tra

tio

n (

ug

/ d

ry g

)15

Total PAHs Status and Trends (1986-2009)

• The largest PAH concentration was at Yerba Buena

Island in San Francisco Bay (2008) following the Cosco

Busan oil spill.

• No clear trend for PAHs • Twenty one out of 35 sites show upward trends, but only 5 of

these were statistically significant increases

• 4 sites had significant declines

16

Summary

• DDT, PCB, and Butyltins have generally decreasing at many stations

• Consistent with the implementation of pollution controls

• No clear trend for Total PAHs

• Highest recent concentrations in SF Bay after oil spill

• Mussel tissue pollutant concentrations vary depending on site

conditions:

• Enclosed bays generally have higher concentrations

• Most ASBS have low concentrations of contaminants, except those near

large watershed sources

17

Mussel Watch Pilot Study:

Contaminants of

Emerging Concern (CECs) - 2010

18

Mussel Watch CEC Pilot Study

• Pioneering study to inform future monitoring efforts on

what CECs should be targeted

• To expand the relevance and utility of the National

Status and Trends Mussel Watch program to regional,

state and local stakeholders

• NOAA applied all its analytical resources toward CA

mussel watch, with a focus on CECs

• Collaborators: NOAA, SCCWRP, SWRCB, SFEI, USGS

Mussel Watch Pilot Study Design

• Many new analytes selected (CECs)

• Traditional pollutants were also analyzed at certain sites to

maintain time series

• Contaminant concentrations were assessed according

to different land uses and proximity to sources

• Resident mussels were sampled Dec. 2009 – May 2010

Candidate Contaminants/Classes Analyte Class Examples No.

analytes

No. Stations

Pharmaceuticals & Personal Care Products (PPCPs)

DEET, fluoxetine, ibuprofen, triclosan

86 All

Industrial and Commercial CECs*

4-nonylphenol, bisphenol A,

BDE47, HBCD

54 Partial

Current Use Pesticides chlorpyrifos, dachthal,

permethrin,

27 All

Legacy Organohalogens & Butyltins

chlordanes, DDTs, endosulfan, PCBs,

TBT

74 Partial

Polycyclic Aromatic Hydrocarbons (PAH)

Phenanthrene, benzo[a]pyrene,

C1-fluorenes

66 Partial

21

Different land uses/sources

• Land uses:

• Agriculture

• Low development

• Mixed development

• Urban

• Sources:

• Storm water discharges

• Sewage Treatment (POTWs)

• No significant sources: ASBS, but note that some ASBS

do have SW or POTW sources

22

23

Concentration comparison of

CEC and legacy pollutants

24

Tissue CEC concentrations by land use category

Example plot - APs

25

Tissue CEC concentrations by land use category

Tissue CEC concentrations by discharge category

26

Conclusions • PBDEs, Alkylphenols (APs) and pharmaceuticals/personal

care products (PPCPs) were the most frequently detected

CECs.

• Urban land use stations generally had higher concentrations

for many CECs (PFCs, APs and PBDEs).

• PPCPs were present in all land uses, including agriculture

• Current use pesticides were highest at agricultural areas,

followed by urban land use.

• CECs had the highest concentrations at stations influenced

by storm water discharges.

• Reinforces the need to monitor selected CECs (PBDEs, PFCs

and APs) in coastal ecosystems, particularly in heavily

urbanized regions.

27

Want to learn more?

• Special Issue of Marine Pollution Bulletin is

being developed to publish all this data.

• SETAC (November, Long Beach) will have a

special session to present on CECs

28

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