F r o m: Va nd e rs p e k

, S y l v ia @ A RB [ m ai l t o : S y l v ia

. Va nd e r s p e k @ ar b. ca .g ov ]

S en t: W e dn e s d a y

, M arc h 0 9

, 20 16 8 : 0 0 A M

T o: S te c k e l, And r e w < S t e c k e l .And r ew @ e p a .g ov > ; H o ng

, J e a nh ee < H o ng.J e a nh e e @ e p a .g ov >

C c: Su t k u s

, Ca r o l @A RB < c a r o l

. s u t k u s @ ar b. ca

. g ov >; H i cks, Au s t i n@A R B < Au s t i n. H icks @ ar b. ca .g ov >

Sub j e c t: P r o p 1 B B e n e fi t c alc u la t o r i n f o r m a t i o n

T h e P r opos i t i on 1 B G o o ds M o v e m en t E m i ss i ons R educ t i on P r o g r a m ( P r o g r a m ) e m i ss i on r ed u c t i o ns i den t i f i ed

i n t he R ep o r

t on R edu c t

i ons A ch i eved fr

o m I nce n t

i ve

- B ased E

m i ss i on R e duc t

i on M easu r

e s i n t he S an Joaqu i

n

V a ll ey da t ed S ep t e m b e r 22

, 201 4 w e r e ca l cu l a t e d us i ng t h e P r o g r a m ’ s G o ods M o v e m en t O n li ne D a t abase

(G M O D )

. T h e pu r p o se o f G M O D i s t o r a n k p o t en ti a l p r o j e c t s b a sed o n e m i ss i on r edu c t i ons an d co s te f f e c t i v eness

, w h i ch r e s u l t s i n a li s t o f p r o j e c t s t h a t m a y be e li g i b l e f o r P r o g r a m f und i n g

. AR B s t a f f m ad e

ad j us t m e n t s t o t he ca l cu l a t i on m e t hodo l o g i es co n t a i ned i n G M O D t o t a ke i n t o cons i d e r a t i on c o m p li ance

dead li nes i n ARB’ s T r u c k & B u s R e g u l a t i on t o d e t e r m i ne w h i ch po rt i on o f t he r educ t i on s m e e t U

. S

. EPA’ s

d e f i n i t i on o f su r p l u s ( r e f e rr e d t o as “ ea r l y ” an d “ e x tr a ” und e r P r o g r a m g u i d e li nes ). G M O D r e q u i r es app li can t s

t o i nc l ude t he p e r cen t a ge o f v eh i c l e m il es tr a v e l ed i n each spec i f i c tr ad e c o rr i do r f o r eac h p r o j e c t

. I t p r o v i des

t he t o t a l p r o

j e c t e m i ss i o n r edu c t i ons w h i ch a r e n o t appo r t i oned base d on t h e v eh i c l e m il es tr a v e l ed f o r a

spec i f i c t r ade co r r i do r

. S t a ff m ade add i t i ona l ad j u s tm e n t s t o accou n t f o r t h e e m i ss i on r edu c t i ons s p ec i f i c t o t h e

S an Jo a q u i n V a ll e y

tr ad e co r r i do r

. T h i s p r o v i ded a m e t hodo l o g y t o ca l cu l a t e e m i ss i on r edu c t i ons fr o m P r o g r a m

f unded p r o

j e c t s t h a t m e e t U

. S

. EPA’ s c r i t e r i a f o r S I P c r ed i t

.

I n add i t i on t o G M O D

, t h e P r o g r a m a l so ha s t r u c k ca l cu l a t o r s p o s t e d on t h e P r o g r a m w ebs i t e (“ on li ne t r u c k

ca l cu l a t o r s ” )

. T h e P r o g r a m ’ s on li ne t r u c k ca l cu l a t o r s w e r e de v e l oped f o r use b y t h e pub li c t o es t i m a t e

e m i ss i on r edu c t i ons b as ed on r e q u i r ed i np u t s o f m il ea g e

, g r oss v eh i c l e w e i g h t r a t i ng

, o l d e n g i ne m ode l y ea r

, and ne w en g i ne m ode l y ea r

. A s no t e d abo v e

, t h e r e a r e se v e r a l cons i d e r a t i ons t h a t a r e i nc l uded i n ARB s t a ff ’ s

m e t hodo l o g y f o r d e t e r m i n i n g S I P c r ed i t ab l e e m i ss i on r edu c t i ons t h a t a r e no t r e f l ec t e d i n t hese on l i ne

t oo l s

. T hes e d i f

f e r ence s a r e su m m a r i z ed be l o w

. H o w e v e r, bo t h t oo l s p r ov i de a pub li ca l l y access i b l e m e t ho d

t o d e t e r m i ne e s t i m a t e s o f t he e x pec t e d e m i ss i on r educ t i ons fr o m i nd i v i dua l p r o j ec t s

. I n add i t i o n

, a m e m b e r o f

t he pub li c ca n r e q u e s t a nd r ece i v e a ll o f t h e nec e ssa r y i n f o r m a t i o n t h a t w as used i n t h e ca l cu l a t i on sub m it t ed

i n ARB’ s s t a ff r epo r

t

.

· U n li k e G M O D , t h e o n li ne tr u c k ca l cu l a t o r s f o r FY 2007

- 08 a nd FY 200 8

- 09 d o no t t a k e i n t o

cons i de r a t i on c o m p li an c e dead li nes i n ARB’ s T r u ck & B u s R e g u l a t i on

. T h e subs e q ue n t on li ne t r u c k

ca l cu l a t o r s f o r FY 2013

- 1 4 and FY 201 5

- 16 d o t a ke i n t o co n s i de r a t i o n co m p li ance dead li nes t o ca l c u l a t e

r educ t i on s.

· T h e on li ne t r u c k ca l cu l a t o r f o r FY 2008

- 0 9 as s u m es an y p r o j e c t w i t h a 2010 o r ne w e r en g i n e t h a t

m ee t s t h e 0

. 2 N O x s t an d a r d i s a 2010 m ode l y ea r e n g i ne and u ses a m o d e l y ea r 2010 e n g i ne t o

ca l cu l a t e e m i ss i o n r edu c t i ons r e g a r d l ess o f t h e a c t ua l e n g i ne m ode l y ea r o f t he r ep l ace m e n t

tr u c k

. G M O D i nc l udes f u rt h e r r e f i ne m e n t s us i ng t he a c t ua l e n g i ne m ode l y ea r o f t he ne w t r u c k t o

p r o v i de m o r e accu r a t e e m i ss i on r edu c t i ons

.

· T h e on li ne t r u c k ca l cu l a t o r s d o no t t a k e i n t o c ons i de r a t i on t he e m i ss i ons t h a t o ccu r i n eac h sp e c i f i c

tr ad e co r r i do r

. S t a ff ap p o rt i oned t he e m i ss i on r e duc t i on r e su l t s sub m it t e d f o r c r ed i t b a sed o n t h e

pe r cen t o f v eh i c l e m il es t r a v e l ed i n t he S a n Jo a q u i n V a ll e y tr ad e co r r i dor

.

S y l v ia Va nd e r s p e k

, C h i e f

A ir Q u ali ty P la nn i ng Bra n c h

A ir Q u ali ty P la nn i ng a nd S c i e n c e D i v is i o n

A ir R e s o u rc e s B o ar d

( 9 1 6 ) 3 2 4

- 7 1 6 3