hrm houston regional monitoring 1 hazardous air pollutants ambient air monitoring data review air...

HRMHouston Regional Monitoring

1

Hazardous Air Pollutants Ambient Air Monitoring Data Review

Air Toxics: What We Know, What We Don’t Know, and What We Need to Know

October 17-18, 2005 University of Houston Hilton – Houston, Texas


2

Houston Regional Monitoring Network

Houston Regional Monitoring (HRM) A voluntary industry consortium Operates an ambient air quality-monitoring

network in the Houston ship channel area Continuous criteria pollutant data collected for past

24 years, Periodic (24 hour composite samples, every 6th

day) VOC data collected for past 18 years Data gathered and reported to date are

effective in assessing long-term trends for specific pollutants


3

Houston Area Air Monitors

Houston ranks #1 in the number of air monitors in the nation

There are 48 ozone monitors in the Houston-Galveston-Brazoria (HGB) area operated by the TCEQ, City, Harris County, HRM, and other independent sources

There are 32 monitors that measure hazardous air pollutants (HAPs) in HGB


4

Sampling and Analytical Methodology

HRM routinely samples for 157 VOCs at seven sites in Houston Ship Channel

24-hour time averaged canister VOC samples are collected once every 6th day

Samples are analyzed by EPA TO-15 Samples are analyzed by gas

chromatography/mass spectroscopy To date over 9,000 samples have been

collected and reported


5

HGB HAP Monitors

Legend

TCEQ & EISM sites

HRM sites


6

Annual Average Trends for BTEX for HRM Network from 1988 through 2004

0.00

2.00

4.00

6.00

8.00

10.00

12.00

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

Year

An

nu

al A

vera

ge

Co

nce

ntr

atio

n

(pp

b-v

)

o-Xylene

p-Xylene + m-Xylene

Ethylbenzene

Toluene

Benzene


7

Comparison of Selected VOCs in HRM Network (Range of Annual Site Averages) to TCEQ Annual Effects Screening Levels (ESLs) for 2004

0%

20%

40%

60%

80%

100%

120%

Ben

zen

e

Iso

pre

ne*

1,3-

Bu

tad

ien

e

Met

hyl

ene

Ch

lori

de

Sty

ren

e

a-P

inen

e*

Car

bo

n T

et.

Tetr

ach

loro

eth

ylen

e

Ch

loro

form

Met

hyl

t-B

uty

leth

er*

p-D

ich

loro

ben

zen

e

Tolu

ene

n-H

exan

e

n-P

enta

ne

Met

hyl

cycl

op

enta

ne

1,3,

5-T

MB

2-B

uta

no

ne

Eth

ylb

enze

ne*

Tric

hlo

roet

hyl

ene

o-X

ylen

e

p+m

-Xyl

ene

n-D

ecan

e

n-N

on

ane

Ch

loro

pre

ne

Nap

hth

alen

e

Per

cen

t o

f E

SL

Range

Network Average

* ESL Based on Odor

Benzene marginally exceeds the annual ESL at a single site in the HRM Network


8

How does Houston’s air compare to that of other cities for selected

compounds?


9

Comparison of HRM and TCEQ Annual Mean Benzene Measurements (1-01-03 to 12-31-03) with Annual Averages from Selected U.S Cities

(EPA AIRData - Year 2003)

0.01

0.10

1.00

10.00

HR

M 1

HR

M 3

HR

M 4

HR

M 7

HR

M 8

HR

M 1

0H

RM

11

Ald

ine

(C

-8)

Ch

an

ne

lvie

w (

C-1

5)

NW

Ho

us

ton

(C

-26

)B

ay

lan

d P

ark

(C

-53

)G

ale

na

Pa

rk (

A-1

67

)B

ay

tow

n (

A-1

48

)S

ho

re A

cre

s (

A-1

45

)C

linto

n (

C-4

03

)D

ee

r P

ark

(C

-35

)2

53

0 N

17

th A

ve

, Ph

oe

nix

, AZ

22

8 W

. Pa

lm A

ve

, Bu

rba

nk

, CA

Lu

ms

Po

nd

Sta

te P

ark

, DE

51

21

Ga

nd

y, T

am

pa

, FL

N. M

an

nh

eim

, Sc

hill

er

Pa

rk, I

L2

01

Mis

sis

sip

pi,

Ga

ry, I

NW

oo

dw

ord

, Es

se

x, M

D3

90

0 S

. Sa

gin

aw

, Mid

lan

d, M

I4

64

6 H

um

bo

ldt,

Min

ne

ap

olis

, MN

Bla

ir S

t, S

t. L

ou

is, M

OB

ell

La

bs

, NJ

12

0-0

7 1

5th

Av

e, N

Y, N

YN

. Ro

se

law

n, P

ort

lan

d, O

R5

91

7 E

lmw

oo

d, P

hila

de

lph

ia, P

A2

12

Pra

irie

, Pro

vid

en

ce

, RI

Ba

hn

so

n A

ve

, Sio

ux

Fa

lls, S

DN

ue

ce

s B

ay,

Co

rpu

s C

hri

sti

, TX

14

15

Hin

ton

St,

Da

llas

, TX

Cle

ve

lan

d &

Cla

rk, E

l Pa

so

, TX

20

1 H

.O.M

ills

, Po

rt A

rth

ur,

TX

2n

d S

t. &

Wo

od

is, N

orf

olk

, VA

Ch

arl

es

ton

& 1

5th

, Se

att

le, W

A2

30

2 H

oa

rd, M

ad

iso

n, W

I

Ben

zen

e C

on

cen

trat

ion

(p

pb

-v)

HRM Annual Mean TCEQ Annual Mean EPA AIRdata Annual Mean

TX Long-Term ESL = 1.0 ppbv

1 in a Million Risk = 0.039 ppbv

1 in 100,000 Risk = 0.39 ppbv


10

Comparison of HRM and TCEQ Annual Mean n-Hexane Measurements (1-01-03 to 12-31-03) with Annual Averages from Selected U.S Cities (EPA AIRData -

Year 2003)

0.1

1.0

10.0

HR

M 1

HR

M 3

HR

M 4

HR

M 7

HR

M 8

HR

M 1

0

HR

M 1

1A

ldin

e (

C-8

)C

han

nelv

iew

(C

-15

)N

W H

ous

ton

(C

-26

)B

ayla

nd

Pa

rk (

C-5

3)G

alen

a P

ark

(A

-16

7)B

ayto

wn

(A-1

48)

Sho

re A

cre

s (A

-14

5)C

linto

n (

C-4

03)

Dee

r P

ark

(C

-35)

803

N. L

ore

n, A

zus

a, C

A2

28 W

. Pa

lm A

ve

, Bu

rban

k, C

AS

. De

kalb

, De

cat

ur, G

A7

50 D

un

de

e, N

orth

broo

k, I

L2

01 M

iss

issi

pp

i, G

ary

, IN

Wo

odw

ord

& D

orse

y, E

sse

x, M

D3

90 P

ark

land

, Ly

nn, M

A

464

6 H

um

bo

ldt,

Min

ne

apol

is, M

NB

lair

St,

St.

Lo

uis

, MO

200

th S

t &

So

uth

ern,

NY,

NY

212

Pra

irie

, Pro

vid

enc

e, R

IB

ahn

son

Av

e, S

iou

x Fa

lls, S

D1

415

Hin

ton

St,

Da

llas,

TX

Cle

vela

nd

& C

lark

, El P

aso

, TX

201

H.O

.Mill

s, P

ort

Art

hu

r, T

X2

nd S

t. &

Wo

odis

, No

rfol

k, V

A

n-H

exan

e C

on

cen

trat

ion

(p

pb

-v)


TX Long-Term ESL = 150 ppbv


11

Comparison of HRM and TCEQ Annual Mean o-Xylene Measurements (1-01-03 to 12-31-03) with Annual Averages from Selected U.S Cities

(EPA AIRData - Year 2003)

0.00

0.10

0.20

0.30

0.40

0.50

0.60

HR

M 1

HR

M 3

HR

M 4

HR

M 7

HR

M 8

HR

M 1

0H

RM

11

Ald

ine

(C-8

)C

han

nel

view

(C

-15)

NW

Ho

ust

on

(C

-26)

Bay

lan

d P

ark

(C-5

3)G

alen

a P

ark

(A-1

67)

Bay

tow

n (

A-1

48)

Sh

ore

Acr

es (

A-1

45)

Clin

ton

(C

-403

)D

eer

Par

k (C

-35)

2530

N 1

7th

Ave

, Ph

oen

ix, A

Z

228

W. P

alm

Ave

, Bu

rban

k, C

A

Lu

ms

Po

nd

Sta

te P

ark,

DE

5121

Gan

dy,

Tam

pa,

FL

S. D

ekal

b, D

ecat

ur,

GA

750

Du

nd

ee, N

ort

hb

roo

k, IL

201

Mis

siss

ipp

i, G

ary,

IN

Wo

od

wo

rd &

Do

rsey

, Ess

ex, M

D39

0 P

arkl

and

, Lyn

n, M

A

4646

Hu

mb

old

t, M

inn

eap

olis

, MN

Bla

ir S

t, S

t. L

ou

is, M

OB

ell L

abs,

NJ

120-

07 1

5th

Ave

, NY,

NY

N. R

ose

law

n, P

ort

lan

d, O

R

5917

Elm

wo

od

, Ph

ilad

elp

hia

, PA

212

Pra

irie

, Pro

vid

ence

, RI

Bah

nso

n A

ve, S

iou

x F

alls

, SD

1415

Hin

ton

St,

Dal

las,

TX

Cle

vela

nd

& C

lark

, El P

aso

, TX

201

H.O

.Mill

s, P

ort

Art

hu

r, T

X

2nd

St.

& W

oo

dis

, No

rfo

lk, V

A23

02 H

oar

d, M

adis

on

, WI

o-X

ylen

e C

on

cen

trat

ion

(p

pb

-v)



12

Comparison of HRM and TCEQ Annual Mean Chloroform Measurements (1-01-03 to 12-31-03) with Annual Averages from

Selected U.S Cities (EPA AIRData - Year 2003)

0.001

0.01

0.1

1

10

HR

M 1

HR

M 3

HR

M 4

HR

M 7

HR

M 8

HR

M 1

0H

RM

11

Ald

ine

(C-8

)C

han

nel

view

(C

-15)

NW

Ho

ust

on

(C

-26)

Bay

lan

d P

ark

(C-5

3)G

alen

a P

ark

(A-1

67)

Bay

tow

n (

A-1

48)

Sh

ore

Acr

es (

A-1

45)

Clin

ton

(C

-403

)D

eer

Par

k (C

-35)

Lu

ms

Po

nd

Sta

te P

ark,

DE

5121

Gan

dy,

Tam

pa,

FL

S. D

ekal

b, D

ecat

ur,

GA

860

4th

St,

Pea

rl C

ity,

HI

4743

N. M

ann

hei

m, S

chill

er P

ark,

IL20

1 M

issi

ssip

pi,

Gar

y, IN

3900

S. S

agin

aw, M

idla

nd

, MI

4646

Hu

mb

old

t, M

inn

eap

olis

, MN

Bla

ir S

t, S

t. L

ou

is, M

OB

ell L

abs,

NJ

120-

07 1

5th

Ave

, NY,

NY

N. R

ose

law

n, P

ort

lan

d, O

R

5917

Elm

wo

od

, Ph

ilad

elp

hia

, PA

212

Pra

irie

, Pro

vid

ence

, RI

Bah

nso

n A

ve, S

iou

x F

alls

, SD

1415

Hin

ton

St,

Dal

las,

TX

Cle

vela

nd

& C

lark

, El P

aso

, TX

201

H.O

.Mill

s, P

ort

Art

hu

r, T

X

2nd

St.

& W

oo

dis

, No

rfo

lk, V

A23

02 H

oar

d, M

adis

on

, WI

Ch

loro

form

Co

nce

ntr

atio

n (

pp

bv)




1 in 100,000 Risk = 0.09 ppbv


13

How Are 1,3-Butadiene Levels Trending in the Houston Ship

Channel?


14

0.01

0.10

1.00

10.0019

95

1996

1997

1998

1999

2000

2001

2002

2003

2004

Year

Co

nce

ntr

atio

n, p

pb

-v

Site 1

Site 3

Site 4

Site 7

Site 8

Site 10

Site 11

Annual Median 1,3-Butadiene Concentration at HRM Sites

Annual Medians have declined below 1 ppb-V since 2002

Annual Medians have declined below 1 ppb-V since 2002


15

Annualized 1,3 Butadiene Reduction Trend Over

10-Year Period (1995-2004)*Annual Average Annual Median

HRM Site ID Annualized Trend (%) Annualized Trend (%)

HRM 1 – Central Street -4.60% -2.70%HRM 3 – Haden Road -2.50% -2.60%HRM 4 – Sheldon Road -2.40% -2.60%HRM 7 – West Baytown -4.60% -4.80%HRM 8 – LaPorte -5.10% -5.10%HRM 10 – Mont Belvieu -6.40% -7.60%HRM 11 – East Baytown -6.30% -9.40%Overall Network -4.55% -4.97%

* Annualized trend based on linear regression model


16

Comparison of HRM and TCEQ Annual Mean 1,3-Butadiene Concentrations in Houston Compared to Trends from Other

US Cities (1-01-01-03 through 12-31-03) EPA AIRData

0.001

0.01

0.1

1

10

HR

M 1

HR

M 3

HR

M 4

HR

M 7

HR

M 8

HR

M 1

0H

RM

11

Ald

ine

(C

-8)

Cha

nne

lvie

w (

C-1

5)

NW

Ho

usto

n (

C-2

6)

Bay

lan

d P

ark

(C

-53)

Gal

ena

Pa

rk (

A-1

67)

Bay

tow

n (A

-14

8)S

hore

Ac

res

(A-1

45)

Clin

ton

(C

-40

3)D

eer

Par

k (

C-3

5)

253

0 N

17t

h A

ve

, Pho

eni

x, A

ZL

ums

Po

nd S

tate

Pa

rk, D

EP

omp

an

o B

ea

ch

, FL

512

1 G

an

dy,

Ta

mp

a, F

L8

60 4

th S

t, P

ea

rl C

ity, H

I

N. M

an

nhe

im, S

chi

ller

Pa

rk, I

L2

01 M

iss

issi

pp

i, G

ary

, IN

Haz

ard

, KY

Wo

odw

ord

& D

orse

y, E

sse

x, M

D

390

0 S

. Sa

gin

aw

, Mid

land

, MI

464

6 H

um

bo

ldt,

Min

ne

apol

is, M

NB

lair

St,

St.

Lo

uis

, MO

Bel

l La

bs, N

J1

20-0

7 1

5th

Av

e, N

Y, N

YN

. Ro

sela

wn

, Por

tlan

d, O

R

591

7 E

lmw

oo

d, P

hila

delp

hia

, PA

212

Pra

irie

, Pro

vid

enc

e, R

I

Bah

nso

n A

ve

, Sio

ux

Falls

, SD

141

5 H

into

n S

t, D

alla

s, T

X

Cle

vela

nd

& C

lark

, El P

aso

, TX

201

H.O

.Mill

s, P

ort

Art

hu

r, T

X

122

5 M

erri

man

, Po

rt N

ech

es

, TX

2nd

St.

& W

ood

is, N

orf

olk,

VA

Cha

rles

ton

& 1

5th,

Sea

ttle

, WA

Kee

ny

Kn

ob,

WV

230

2 H

oa

rd, M

ad

ison

, WI1,

3-B

uta

die

ne

Co

nce

ntr

atio

n (

pp

b-v

)




1 in 100,000 Risk = 0.15 ppbv


17

Observations and Conclusions

Houston industry working in concert with the TCEQ has been active in collecting long-term (high quality) measurements to assess community exposure

There are over 30 HAP monitors currently operating in the Greater Houston Metropolitan area making this area the most heavily monitored area for hazardous air pollutants in the US

It is expected that emissions of HRVOC and associated HAPs will continue to decline in Houston as new rules are phased in to meet the 8-hour Ozone standard

Long-term measurements of air toxics are expected to continue in order to address questions with regard to community health

HRM will continue to do its part to provide high quality data to better understand air quality issues in the region

Houston’s air quality has dramatically improved and will continue to improve


18

Our Commitment to Air QualityWith more than 40 air monitors, Houston has the most extensive monitoring network in the U.S. The Houston Regional Monitoring Network is an important part of Houston's air monitoring system. HRM is committed to the scientific understanding of air quality in the Houston area. Our efforts focus on demonstrating attainment of all air quality standards.

http://www.houstonairquality.com

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