p. 1 

# OAR Box 1147 Prepped by Ollie Stewart



### Document

Number: 

# 133 ) IV-E-6 Docket Number: 

# A-87-1 1

Printed 4/22/20082:42:55PM

Sheet 133 of 242P. 2 y 

## \Smmt.

^Lr ^ ^ UNITE D STATE S ENVIRONMENTA LPROTECTIO N AGENC Y AN N ARBOR . MICHIGA N 4810 5 

### SE P I 4 I98 7 OFFIC E O F AI R AN D RADIATIO N MEMORANDU

M SUBJECT : Hearing on Californi a Onboard Bil l FROM : Joh

n F . Anderson , Senio r Projec t Manage r Standard s Developmen t an d Suppor t Branc h TO : THRU : Publi c Docke t A-87-1 1

Cheste r J . France , Chie f Standard s Developmen t and/&upp IA'I O n Augus t 26 , 198 7 I attende d hearing s onthe above bill , in respons e t o a reques t fro mAssembl ySpeake r Willi e Brow nfor a technica l exper t (se e 8-13-8 7 lette r attached) . I di d no t actuall ytestify , bu t inconversation s wit hothe r partie s I obtaine d some newinformatio nconcerning breathing an d emptying Attache d measurement s i s a brie f presentatio n o f the Su n Oi l conducte d recently , "Servic e Statio nVen t Emissions" , whichI obtaine d fro mth e author , Mr , Walte r Douthit . Su

n believe s tha t thi s dat a show s that , a t leas t for station s using pressur e relie f valves , ther e ar e no significan t breathing or emptying emissions . I als o me t an

d spok e wit hDr . Richard A . Nichols , who indicate d t o m

e tha t he wa s awar e o f substantia l dat a on emptying los s measurements , wit han d withou t Stag e I I systems . Hi s belief , whic hhe claimed i s substantiate d b ythe data , i s tha t the vapo r spac e insid e the undergroun d tan k i s highl y stratified , withthe uppermos t portio n being essentiall yai r withou t hydrocarbons . I t i s thi s ai r whic hmove s in an d ou t during tan

k emptying , an

d littl e or no vapo r emission s result , eithe r wit hor withou t Stag e I I controls . Dr . Nichol s identifie d on e specifi c repor t fro mthe Sout hCoas t Ai r Qualit yP. 3

Managemen t Distric t ("phas e I I Vapo r RecoveryEvaluatio n Program" , 1979 ) an d sai d tha t he had othe r report s whic hh e woul d sen

d t o me . Dr . Nichol s als o criticize d the recen t NIPE R emptying los s measurement s a s being bot hflawe d (becaus e o f imprope r fue l tan k conditioning ) an d non-representativ e (becaus e o f the undergroun d tan k siz e an

d configuration) . Attachment s cc : Glen

n Passavan tP. 4

" A " CAP'TO L 5*Cf**»" r .*.* C C*v'Fi«ftr-ilA&«jd1 4

•&;*> : 4J5-B07 7 I DISTRIC

TOfTlC E *d s V* N N£5 S AVENU E 5*NFHA*-C:SC 0 CALIFORNI A9410 2

MTS i 357079 4 Z DISTRIC TOfFIC E ;c ? SOUT H BROADWAY SUIT E800 9 Lo s ANGELE S C

A 9001 2 (213 > 620-435 6 

# (tfalifanri aiGegtHlatur e WILLI E LEWI S BROWN , JR .

SPEAKE R O F TH E ASSEMBL Y

.m^m . Augus t 13 , 198 7

Mr . Richar d Wilso n Director , Offic e o f Mobil e Source s U.S . Environmenta l Protectio nAgenc y 40 1 MStreet , S.W . Washington , D.C . 2046 0 Dea r Mr . Wilson : A s yo u know , I amcarryin g legislatio n(A B 792 ) tha t woul d requir e al l ligh t dut yvehicle s sol d i n Californi a t o b e equippe d wit h onboar d control s fo r th e recover yo f refuelin g vapors . Th e bil l wil l b e hear d i n th e Senat e Governmenta l Operation s Committe e o n Augus t 26 . I understan d th e Agenc ymus t remai n neutra l o n stat e contro l strategie s suc ha s onboar d control s an d wil l no t tak e anypositio n c nAB 792 . I would , however , greatl yappreciat e technica l assistanc e fro m

you r Offic e o f Mobil e Source s o n Augus t 2 5 an d 26 . Durin g thes e tw o day s w e wil l nee d a technica l exper t wh o ca n brie f legislator s an d administratio n official s o n th e technica l feasibilit yo f onboar d control s an d th e detail s o f you r propose d vapo r recover yregulation s a s wel l a s respon d t o question s tha t ma y com e u p durin g th e Augus t 2 6 hearing . I f yo u hav e anyquestion s o r nee d additiona l informatio npleas e d o no t hesitat e t o contac t Ken t Stoddard , myenvironmenta l consultant , a t (916 ) 445-8077 . Than k yo u fo r you r assistance . Sincerely ,

WILLI E LEWI S BROWN , J R Speake r o f th e Assembl y WLB:ks mP. 5



## SERVIC E STATIO

N VENT EMISSIONS

WAL T DOUTHI T < I 

## SU

NREFININ

GAN D MARKETIN

GCOMPAN

Y 8/26/8 7 .P. 6



## PURPOS E

TO QUANTIFYTH E VOLUM E O F BREATHIN

GLOSSE S FROMUNDERGROUN D TANK S AT SERVIC E STATIONS WHIL E GASOLINE I S DISPENSE D TO VEHICLE S AN D DURIN GOFF-HOU

RDIURNA

L CONDITIONS .

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### TES T PROCEDURE S

o Conducte d monitorin g o f ven t emission s a t typica l servic e stations . o Monitore d ventin g o f vapor/ai r durin g vehicl e refuelin g wit hSinge r dr yga s meter s . o Monitore d ventin g durin g diurna l conditions . o Monitore d ventin g wit han d withou t pressure/vacuu mcap s o nvents . o Compare d vapor/ai r Singe r mete r reading s wit hamoun t o f dispense d fuel . o Prio r t o monitoring :

- Conducte d routin e mechani c chec k o f servic e statio ndispensin g units , hoses , caps , etc .

- Checke d al l tan k an d Stag e I manifold s fo r tigh t sealing .

- Recorde d undergroun d tan k fue l temperatures .

- Determine d gasolin e RVP .P. 8


### FIGUR E1 SERVIC ESTATION

LAYOU T

MULTI-GRAD EDISPENSE R

CA S METE R

VEN T

UNDERGROUNDSTORAG E TANK S


### -3 -P. 9 —^-Iffrrv+f; •

• • " * • r~ : FIGUR E 2 TESTEQUIPMENT

VEN T

CHEC K VALV E OUTFLOW INFLO W

CHEC K VALV E

DRYTES TMETE R DR YTES TMETE R



### -4 -P.1 0 

### TABL E I VEN T MONITORIN G- CHICHESTE RSUNOC O 7/21/8 7 SERVIC E STATIO NINFORMATIO N o Thre e 8,00 0 gallo nundergroun d tank s o Tan k gauge s prio r t o test :

- EconomyUnleade d 302 1 gal .

- Ultr a Supe r Premiu m313 4 gal .

- Leade d Regula r 327 6 gal . o Tan k gasolin e temperature s 8 3 ± 1 o Ambien t temperatur e rang e - 9 0 t o 9 5 F o Tes t tim e - 11:0 0 A.M . t o 2:0 0 P.M . o Stag e I Ven t Ca p i nplac e (Islan d vent) . Singl e mete r i nuse . DATA : Vol . o f Vol . o f Vol . o f Fue l Ai r Draw nVapor/Ai r Dispense d Thr u Ven t Exhale d 340. 3 gal . 128. 3 gal . 0 RATIO : 128. 3 = .3 8

340. 3
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## TABL E I I VEN T MONITORING- PHILADELPHI APIK E SUNOC O 7/24/8 7 SERVIC E STATIONINFORMATION o Thre e 6,00 0 gallo nundergroun d tank s o Tan k gauge s prio r t o test :

- Econom

yUnleade d 317 3 gal .

- Ultr a Supe r Premium325 8 gal .

- Leade d Regula r 346 9 gal . o Tan k gasolin e temperature s 8 0 ± 1 o Ambien t temperatur e range , 9 1 - 10 0 F o Tes t tim e - 10:0 0 A.M . t o 2:0 0 P.M . o Stag e I ven t cap i nplac e (roo f vent) . Dua l Singe r mete r setup . 1 

## DATA :

Vol . o f Fue l Dispense d 520. 9 gal . RATIO : •



## Vol . o f Ai r Draw n Thr u Ven t 228. 1 gal . 228. 1 .4 4 Vol . o f Vapor/Ai r Exhale d 0
520. 9 -6
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## TABL E II I CONTINUOU S VENT MONITORIN G PHILADELPHI APIK E SUNOC O . ADDITIONAL SERVIC E STATIO NINFORMATIO

N Fue l Tank RVP Tem

p
o Econom

yUnleade d 11. 3 ps i 8 4 F
o Ultr a Supe r Premiu m11. 4 ps i 8 4 F
o Leade d Regula r 11. 0 ps i 8 4 F

- /
-TABL E II I (continued )

DATA : )

, ^ 7/2 7

High 850 0 2:0 0 7/2 7 4PMt o 9P M ambien t temp . 9 4 F ga l fue l drop a t P.M . 9P Mt o 7/2 8 7A

M Vo l o f

Fue l Dispd

.(«"•!• ) 211.0 8

- Vo l o f

Ai r Draw n thru Ven t .(K*l. ) 15.1 6

0 Vo l o f

Vapo r Emitte d (Rai. ) 25.3 0

29.6 6 Lo wambien t temp . 7 2 F 7/2 8 7AM-t o 9P M Hig hambien t temp . 8 9 F 7/2 8 9P Mt o 7/2 9 7AM Lo wambien t temp . 7 0 F 7/2 9 7AMt o 9P M Hig hambien t temp . 9 0 F 7/2 9 9P Mt o 7/3 0 7A M Lo wambien t temp . 6 8 F 7/3 0 7AMt o 9P M Hig hambien t temp . 9 0 F 7/3 0 9P Mt o 7/3 1 7A M Lo wambien t temp . 6 9 F 2135.6 8 681.5 0

1599.4 7 450.3 8

1673.3 3 655.2 1 2.4 0 .3 3

1.5 8

2 1

RATIO : (Volum e Fue l Dispense d fro m7/2 8 = 178 7 = .3 3

Volum e o f Ai r Thr u Vent ) 540 7
NOTE : Atmospheri c Pressur e Range : 29.9 5 t o 30.1 6
* ' Stag e I certifie d greate r tha n905 5 efficiency . 

### -8 -P.1 4 

## TABL E I V VEN T MONITORINGBROOKHAVE NSUNOC O SERVIC E STATIO NINFORMATION o Thre e 8,00 0 gallo n underground tank s o N o pressure/vacuumven t valv e o Ambien t Temperatur e 7 5 - 8 4 F Atmospheri c Pressur e 30.3 " H g Tan k RV P Temp . o Econom

yUnleade d 11. 8 ps i 8 3 F Ultr a Supe r Pre m

11. 2 ps i 82° F Leade d Regula r 10. 5 ps i 8 3 F o Tes t tim e - 11:3 0 A.M . t o 3:0 0 P. M

r ' 

## DATA : t l[ 

## Vol . o f i Fue l * Dispense d

381. 5 gal . Vol . o f

Ai r Drawn Thr u Ven t 116. 3 gal . Vol . o f

Vapor/Ai r Exhale d 0 RATIO : 116. 3 = 0. 3

381. 5
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### SUMMAR YAN D CONCLUSION S

o Durin g norma l fuelin g o f vehicle s n o ven t emission s observed . Insignifican t ven t emission s durin g non operatin g diurna l condition s a t servic e stations . Volum e o f ai r in-breathin g throug hth e ven t t o undergroun d tank s i s significantl yles s tha nth e amoun t o f gasolin e dispense d - suggestin g equilibriu mcondition s ar e preserve d i n th e undergroun d tan k durin g refueling . Fue l deliver yt o undergroun d tank s caus e ven t emission s withi nefficienc ylimit s > 90% . Expec t significan t variatio ni n emission s dependen t o nStag e I syste m an d deliver yprocedures . . Pressure/Vacuu mcap s beneficial .

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