# Date: November14,2014 Meeting:SouthernCaliforniaGasCompany 

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# I L_NEW STUDIES SHOW LOWER LEAK RATES primarily due to system modernization and better leak detection Leak Rate Comparison 2013 0.60% **~-------------------- ------**  **------ ------**  **------ ------**  **-------** o.so
0 /o I 0.40°/o

I
L i:N 0.30°/o **_,_~** 0.20°/o +--- 0.1 0°/o +---

.4.0 **~** Q.1L70

· 0.00°/o +--- All U.S. Distribution SoCaiGas Territory as SoCaiGas from EDF Reported to EPA Reported to ARB LDC Study M =...

**Sc mp**  **ra[nergy-·**

**~··;:** .:..,-:;;.·_
... -

' **0.053o/c**
**o** SoCaiGas Engineering Analysis Clad to
b e of service

. •Major Ozone (NOx) Emission Sources in South Coast Air Ba s in Heavy Duty Transportation Sources Dominate. Trucks, Rail, Marine and Off Road AL O N E exceed

- 3 50 federa

l s t a n dards! Co mmercinl Harbor Craft Service

/ Commerc

i al Residential Combustion Medium-Duty Tru c ks Light-Dut
y Trucks Light-Dut
y C ars Hea vy - Du ty G a s o line Truck s tvlonufacturing ond lndustnol

1 .... 300 1 - 250 - 200 + 150 Our core market

- Service/ Comme rci a l , Residential & Manufactur

i ng/ In d ustri al - - represents

a SMALL part of the emission inventory. Moving to clean fue

l s NOW

i nto go o ds movement marketplace

is c r itical. o Hea vy Du ty Bu ses • Aircraft L o comotives Large Stati o nary

**~**

1 1 5 tpd N Ox e m issions level needed to .... 100 meet 2023 ozone sta n d ar d ( 1 > • Ocean Goin g V e ss e l s • O ff-Road
E quipm e nt

- 50 • Hea vy -Du ty Die s el Trucks

4 --·-·
,..._ 0 Em iss i ons In rons per day (rpd)
**~** 80 tpd N Ox emiss

i o n s level needed to meet 2032 ozone sta ndard

, . > 1 Em

i ssions = NOx

( n i t rogen oxides ). a precursor to ozone and a p ri mary pollutant regulated by air agencies to reduce ozone le v els . Sou
r ce: 2012 Air Qua li ty Management Plan-South Coast Ai r Qua

l ity Management District M Sowtllenl C. lif • Gu =..., A a> Se mpra Ene r gy u!JIJ1y
•

Glad to be of s ervice.

•Current State GHG Pathway Misses Ozone Deadlines ' ' \ \ ' \ \ ' ' ' ' ' \ \ \ \ ' ' Q __ _ » Ozone reductions need to be achieved Faster and Sooner than c ur rent statewide greenhouse gas reduction goals. Projected Statewide GHG reduction SCAQMD co - benefit NOx reduction from statewide GHG program

< 1 > SCAQMD needed reduction to meet federal ozone standards

< 1 > 2050 CARB Statewide GHG ----- .......... 80 ppb ozone standard (2)

Target 2010 2015 M Sout!Mm C. lifomla Gu c.n,a .., **~** Sempra Energy ubhty•

75 ppb ozone standard

< 2 > 2020 2025 2030 2035 2040 Sourc e: CARB Vision for Cl e an Air Scenario
3 1 South Coast Air Qu a lity M a nagement Di s trict (SCAQMD) 2 part s per billion (ppb)

2045 2050 G l ad to be of service.

•