How does water quality within MBNMS compare to applicable water quality standards

and relevant indicator parameters?

Concentrations of Dieldrin in mussels over time (CCLEAN)

Prop

orti

on o

f Sam

ples

Cum ulative frequency d istributions (m ock data)

O cean P lan Standard

Storm D ischarges R ivers Rece iv ing Water Reference

10 20 30 40 50 60 70 80 90

Analyte concentration (ug /L)

Cumulative Frequency Distributions – comparing reference to receiving water (SWAMP)

Cum

ulati

ve D

istr

ibuti

on F

uncti

on

What are the concentrations and loads of constituents of concern

in discharges to the MBNMS?

From First Flush, 2010

Sites indicated in red exceed Basin Plan objectives

Concentrations of zinc in stormwater discharges to the MBNMS

First Flush copper concentrations at each discharge by year

Loads of dieldrin in rivers (green) and wastewater (red) discharges to the MBNMS (From CCLEAN, 2010)

Loads of PBDE in rivers (green and blue) and wastewater (red) discharges to the MBNMS (CCLEAN 2010)

Nitrate loads entering MBNMS from creeks and rivers (CCLEAN)

Wadd

ell C

reek

Scott

Cree

k

Lagu

na C

reek

Moore

Cree

k

San

Lore

nzo

Riv

er

Branc

iforte

Cree

k

Soqu

el C

reek

Porte

r G

ulch

Aptos

Cree

k

Pajar

o R

iver

Te

mblad

ero

Sloug

h

Salina

s R

iver

Ca

rmel

Rive

r @

HW

Y 1

Big

Sur

Rive

r

1.00E+06 d. Nitrate - N

2.01E+06

8.00E+05

6.00E+05

2001-2002 2002-2003 2003-2004 2004-2005 2005-2006

4.00E+05

2.00E+05

0.00E+00

River and wastewater loads

to MBNMS of Nitrate and Ortho-

phosphate

3,200,000

2,800,000

c. N itrate-N

Rivers and Stream s W astewater

2,400,000

2,000,000

1,600,000

1,200,000

Sampling at Tembladero Slough began in 2003-2004

800,000

400,000

0

2001-2002 2002-2003 2003-2004 2004-2005 2005-2006

Year

450 ,000

400 ,000

f. Orthophosphate

Rivers and Streams Wastewater

350 ,000

300 ,000

250 ,000

200 ,000

150 ,000

100 ,000

50,000

0

2003-2004 2004-2005 2005-2006

Year

What are the specific sources of constituents from the discharges that may be contributing to the identified receiving water problems?

Are biological communities affected by water quality conditions within MBNMS?

Comparing biological community health in reference and non-reference areas

Inde

x of

Bio

tic I

Significant statistical relationships between benthic organisms and pollution concentrations

Results of stepwise multiple regressions for the effects of total organic carbon (TOC), silt + clay (fines), concentrations of TOC-normalized DDTs, a discharge quotient for the Pajaro River and time on infaunal densities (CCLEAN, 2010)

T a x o n r 2 p M o d e l

Cossura p y g o d a c ty la ta 0 .2 5 1 7 0 .0 0 1 6 y = 33.59 – 5.71-9 Time – 1.16 DDT – P a ja ro Levinsenia g ra c ilis 0 .4 0 5 1 < 0 .0 0 0 1 y = 10.21 – 0.60 DDT – 0.42 Pajaro + 0.05 F in e s Nephtys c o rn u ta 0 .0 8 1 3 0 .0 3 3 1 y = 14.66 – 3.55-9 T im e Pholoe g la b ra 0 .2 9 8 5 < 0 .0 0 0 1 y = 25.68 – 5.4-9 Time – 0.25 P a ja ro Total P o ly c h a e te s 0 .2 8 8 9 0 .0 0 0 5 y = 19.96 – 2.48-9 Time – 0.35 DDT – 0.24 P aja ro Total C ru s ta c e a n s 0 .3 4 8 9 < 0 .0 0 0 1 y = 6.21 – 9.7-10 Time – 0.30 DDT – 0.0.01 F in e s Total number of o rg a n is m s 0 .3 5 8 9 < 0 .0 0 0 1 y = 19.01 – 2.68-9 Time – 0.28 DDT – 0.15 P aja ro Total number of ta x a 0 .4 3 0 0 < 0 .0 0 0 1 y = 6.54 – 5.9-10 Time – 0.12 DDT – 0.01 Fines + 0.04 P aja ro

How are water quality conditions within MBNMS changing over

time?

PCB concentrations in Monterey Bay (from CCLEAN)

Mussel Watch trends over time

Co

nce

ntr

atio

n(u

g/g

dry

we

igh

t C

on

cen

tra

tion

(ug

/gd

ryw

eig

ht)

Trend of Ni concentration at Pacific Grove Lovers P o int

4 y = 0.0334x - 6 4 .8 34

3 R2

= 0.1451 N i

3

2

2

1

1

0

1980 1985 1990 1995 2000 2005 20 10 Yea r

Trend of Pb concentra tion at Pcific Grove lovers point

y = -0 .0 92 1x + 190.03

16 R2 = 0.0531

14 Pb

12

10

8

6

4

2

0

1980 1985 1990 1995 2000 2005 20 10

Yea r

How are water quality conditions in discharges to MBNMS changing over time?

Nitrate concentrations have been increasing at the Old Salinas River (CCAMP)