AIR TOXICS MONITORING DATA EPAs Air Quality System (AQS) Ammonia data available but not in AQS Data for All Substances on Appendix O Total Chromium available.

AIR TOXICS MONITORING DATA

EPA’s Air Quality System (AQS)Ammonia data available but not in AQSData for All Substances on Appendix OTotal Chromium available not Hexavalent

Relevance to Rulemaking

While proposed MAAC is based on human health effects, monitoring data is relevant because:

Monitoring data supports need for rulemaking.Monitoring data is “real world”.Monitoring data is more accepted than modeling.

Charts

Region 6 States, KS, CO & MO2004 DataDifferent Monitoring & Analytic Methods Available on DEQ Air Quality website

NOT Research or Publication Quality

Charts (cont.)

AmmoniaArsenicBenzene1,3-ButadieneFormaldehyde

0

20

40

60

80

100

120

140

11 7 8 25 24 55 67 18 58 36 14 31 42 32 17 50 38 4 43 61 34 62 23 30 59 63 2 28 54 20 68 6 13 21

1st max

mean

RfC 144 ppb

The Proposed MAAC value of 2500 ppbwould be a bar over 16 pages tall

Ammonia

Arsenic

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

1st Max

Mean

10x-6.0002 ug/m3

10x-5.002 ug/m3

10x-4.02 ug/m3

Benzene

0

5

10

15

20

25

30

35

1001

B L

ynch

burg

Roa

d

2516

1/2

Tex

as A

venu

e

Clevela

nd A

ve. A

t Clar

k Dr.

800 E

l Vist

a Roa

d & 5

3rd S

treet

Bell

eview

Roa

d

700 W

est S

an F

ranc

isco

Ave

650 R

.E. T

homas

on Lo

op

8715

Ces

sna

Street

9525

Clin

ton

Dr

4510

1/2

Aldi

ne M

ail R

d.

Blair S

t

1071

Lee

sville

Ave

Blair S

t

78th

Ave &

Stee

le St -

Welb

y

3004

N. W

estm

orela

nd

2300

Nor

th Glas

scoc

k

5707

Up

River R

d.

7210

1/2

Bay

way D

rive

201 P

rosp

erity

Sw

1682

2 Kitz

man

1225

Mer

riman

St.,

Port N

eche

s

6400

Biss

onne

t Stre

et

8715

Ces

sna

Street

1682

2 Kitz

man

5296

Sou

thwes

t

1st Max

Mean

10x-4 10ppb

10x-5 1ppb

1,3-Butadiene

0

5

10

15

20

25

30

35

40

45

50LA T

X

LA LA TX

LA TX

LA TX

TX

TX

TX

TX

TX

TX

TX

TX

TX

TX

TX

TX

TX

TX

CO TX

MO TX

TX

TX

OK TX

TX

MO TX

1st Max

Mean

10x-4 1ppb

Formaldehyde

0

5

10

15

20

25

30

TX TX MO TX TX TX LA TX TX MO TX TX TX MO CO TX TX LA CO

1st Max

Mean

10x-4 7ppb

10x-5 .7ppb

Importance

Monitoring essential to SC42

Proposed MAACs are reasonable

Some Toxics Regional/National Problem benzene and 1,3-butadiene