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# OAR Box 1672 Prepped by Charmelle Mathews



### Document

Number: 

# 4 ) ll-A- 3
Docket Number: 

# A-98-1 3

Printed 9/30/2008 11:01:00 AM Sheet 4 of 132P. 2



# v>EP A Unite d State s Environmenta l Protectio n Agency Offic e o f Ai r Qualit y Plannin g an d Standard s Researc h Triangl e Par k N C 2771 1 EPA-450/3-81-003 a

Jul y 198 4

Ai r 

# VO C Emission s fro m Volatil e Organi c Liqui d Storag e Tanks — Backgroun d Informatio n fo r Propose d Standard s Draf t

EI S A-98-/3 1L-A-3

1

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# ... JP. 3



## EPA-450/3-81-003 a



# VO C Emission s fro m Volatil e Organi c Liqui d

Storag e Tank s — Backgroun d Informatio n fo r Propose d Standard s

Emissio n Standard s an d Engineerin g Divisio n

U.S
. ENVIRONMENTA L PROTECTIO N AGENC Y

Offic e o f Ai r an d Radiatio n Offic e o f Ai r Qualit y Plannin g an d Standard s Researc h Triangl e Park
. N C 2771 1

Jul y 198 4 

# 2.P. 4

insurance . Th e tota l annualize dcost , excludin g produc t recover y credits , attributabl e t o eac hregulator y alternativ e i s estimate db y addin g operatin g cost s t o th e annualize dcapita l cost . Th e tota l annualize d cost , includin g produc t recover y credits , i s estimate db y subtractin g th e valu e o f th e recovere dproduc t fro m th e annualize d costs . Cos t effectivenes s i s th e tota l annualize dcos t divide db y th e emissio n reduction s obtaine db y applyin g eac hregulator y alternative . 8. 1 CAPITA L COST S Th e capita l cost s fo r th e regulator y alternative s ar e base doncos t

1 2 3 estimate s obtaine dfro m industr y

vendor s andEP

A reports . ' ' Vendor s wer e contacte dandaske dt o provid e estimate s o f th e cost s t o construc t fixe droo f tanks , externa l floatin g roo f tanks , an dsecondar y

seals , a s wel l a s th e cos t t o instal l interna l floatin g roof s i nfixe droo f tanks . (Se e Table s 8-1 , 8-2 , 8-3 , and8-4. ) Interna l floatin g roo f cos t dat a ar e base dona fourth-quarte r 198 2 surve y o f equipmen t manufacturer' s prices . Othe r cos t estimate s ar e base dondat a collecte di na simila r manne r i nlat e 197 9 andearl y 1980 . Thes e estimate s have bee nscale d 4 base donChemica l Engineerin g genera l cos t indexe s t o reflec t second quarte r 198 2 dolla r estimates . Al l capita l cost s ar e a t leas t equivalen t t o study estimate s (+3 0 percen t accuracy) . Th e capita l cos t o f a ninterna l floatin g roo f depend s mainl y upo n th e liqui dsurfac e area . Therefore , th e capita l cost s fo r thes e device s ar e give nonl y

a s a functio no f th e tan k diameter , whic hi s directl y relate dt o surfac e area . Th e cos t o f a fixe droo f tank , however , i s a functio no f th e volume capacit y o f th e tank* . Tan k an droo f cost s A nestimatin g techniqu e ha s bee ndevelope dt o relat e tank volume t o tan k heigh t an

ddiamete r an

dthereb

y ai dth e compariso no f fixe droo f tan k cost s t o floatin g roo f costs . Th e formul a i s base donth e fac t tha t tan k height s generall y

increas e inabou t 2.6 2 mete r ( 8 foot ) increment s (du e t o th e widt ho f shee t steel ) an dtha t fo r othe r tha nsmal l tanks , th e heigh t t o diamete r rati o rarel y exceed s unit y

i nindustry

practice . Th e formula , whic hha s bee nuse di nth e developmen t o f th e capita l cos t tables , i s a s follows : Tan k capacit y

(V ) i ncubi c meter s 0-4 5 46-9 1 92-30 7 308-1,13 6 1,137-11,59 0 >11,59 0 Tan k heigh t (H ) i nmeter s 2.6 2 5.2 5 7.8 7 10. 5 13. 1 15. 7 Tan k diamete r (D ) inmeter s



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# I

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