P. 1 

# OAR Box 1490 Prepped by Charmelle Mathews



### Document

Number: 

# 11 ) IV-B-1 1 Docket Number: 

# A-94-5 2

Printed 8/4/2008 11:51:46

AM Sheet 11 of 273P. 2 

# /W-S2 - H/-&-I I

TO : FROM : DATE : SUBJECT : MEMORANDU M Keit h Barnet t U.S . Environmenta

l Protectio n Agenc

y Kennet h R . Meardon an

d Fran k Meadow s Pacific Environmenta

l Services , Inc . 

### FE B 2 T ?uH 3 EP A AI R DOCKE T Augus t 8 , 200 2 Comments o

n Haberlein' s "Compariso

n o f Massillo n an d Proform " Pe r ou r conversatio n th e othe

r day , th e purpos e ofthi s mem o i s to summariz e th e point s w e discusse

d o n Ro b Haberlein' s Jul

y 26 , 2002 , pape

r entitled "Comparison ofth e Characteristic s ofth e A.R.E . Massillon Plan t an d th e Profor

mLL C West Memphi s Plan

t tha t affec t Captur e o f Emissions. " 1 . The pape

r miscalculate s th e are aofth e buildin g enclosur e tha t woul d b e use

d t o demonstrat

e tha t natura l draf t opening s ar

e les s tha n 5% . Th e pape r use s jus t th e floor dimensions , whe

n th e requiremen

t i s based o n th e su mofth e floor, ceiling , an

d fou r wall s ofth e enclosure . Correctin g thi s calculation , th e tota l surface are afo

r th e barg e cover s enclosur

e i s 93,96 8 squar

e feet . The ope

n are afo r barg e cover s i s 1,37 6 squar e feet , whic

h i s 1.5 % ofth e tota l squar e footag e ofth e buildin

g enclosure . 2 . Th e pape r appear s t o mis-represen

t th e Metho d 20

4 criteri afo

r demonstrating pressur

e differential s insid

e an d outsid e th e enclosure , implyin

g tha t win d velocit y affect s th e abilit y t o mee t thi s criteria . Pressur

e differentia

l refers to th e difference i

n atmospheri c pressur

e insid e an d outsid e th e enclosure . Whe

n measurin g th e pressures , one i s supposed t o shiel d th e device to protec t the sensors fromth e influence fromoutsid e win d an d turbulen t ai r tha t ma y b e cause d b y fans , equipment, o

r machinery . Thi s i s usuall

y don e wit h som e typ e o f "snubber " device . Regardless , th e outside pressur e reading i s independen

t o f wind ; tha t is , yo u ca n have th e sam

e 1P. 3

pressur e reading wit

h no win d an d wit h astron g wind . W

e agre e wit

h th e "win d tunnel " effec

t create d whe

n simultaneousl

y openin g windwar d an d leewar d doors . Doubl e set s o f

door s ar e ofte n used o n building s t o preven

t this . Wha t ma y happen , however , i s tha

t th e actua l effectivenes s ofth e enclosur e ma y b e les s o n wind y day s versu s non-wind

y days . But , thi s doe s not affec t th e abilit y ofth e enclosur

e t o sho w complianc e wit

h th e Metho d 204 criterium . Ifth e criteriu mi s met , th e enclosur

e i s stil l assigne d 100 % capture . Whethe

r i t actuall y achieve s 100 % o r no t i s no t necessaril y th e critica

l poin t fo r ne w sources , but

whethe r or no t a n inspector

ca n objectivel y evaluat e th e enclosur

e agains t th e Metho d 20

4 criterium . 3 . Th e paper' s stronges t

poin t wa s it s abilit

y t o la y out difference s i

n th e processe s betwee n Massillon an

d Profor man d the n ask whethe r o r not Massillon shoul

d b e considered "similar " t o Profor

mi n orde r t o se t th e floor . 4 . Th e difference s cited i

n th e paper , however , d

o no t addres s th e issue o f

whethe r o r not ane w Proform-lik

e facilit y coul d b e abl e t o buil d a n enclosur e tha t me t th e Metho d 20

4 criteria . W e discussed briefl

y th e innovativ e thing s other s have don e (e.g. , th e shi

p buildin g example ) to construc t complian t Metho d 20

4 enclosure s an

d fel t tha t thi s industr

y could b e equall

y innovative (withou t awhole lo t

o f effort) . 5 . W e discusse d whethe

r o r not w e have observed enclosur e fo r part s a s larg e a s barg e covers . W e indicate d tha

t w e ha d not . W e discussed option s tha

t facilitie s could us e t o overcom e som e ofth e siz e issue s cited i

n th e paper . 6 . W e discusse d wha

t ane w facilit y would d o t o addres s atotal enclosur e requiremen

t whe n buildin g ane w facilit y - i t would first

desig n ai r flows t o mee

t worke r exposur e requirements , the

n design wall s aroun

d th e proces s t o mee

t th e Metho d 20

4 criteria , an

d tha t the Metho d 20

4 design shoul

d no t affec t th e ai r flow required t o mee

t worke r exposure .