Small OffRoad Engines and Large SparkIgnition Engines with

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Small Off-Road Engines and Large Spark-Ignition Engines with less than or equal to One

Small Off-Road Engines and Large Spark-Ignition Engines with less than or equal to One Liter in Displacement Workshop November 14, 2007 1

Outline Background: SORE Proposed changes for SORE Background: LSI Proposed changes for LSI ≤

Outline Background: SORE Proposed changes for SORE Background: LSI Proposed changes for LSI ≤ 1 liter displacement 2

Background: SORE Credits • Production emission credits established in 1998 to provide flexibility during

Background: SORE Credits • Production emission credits established in 1998 to provide flexibility during transitional period of emission standard changes • U. S. EPA considered use of production emission credits at the time, but ultimately did not adopt 3

Proposed Changes: SORE Credits • Elimination of Production Credits – No other program uses

Proposed Changes: SORE Credits • Elimination of Production Credits – No other program uses Production Credits – U. S. EPA does not use Production Credits – Benefit of compliance margin returns to public • Retention of Certification Credits 4

Proposed Changes: SORE Emission Durability Period • Limit durability period to five years or

Proposed Changes: SORE Emission Durability Period • Limit durability period to five years or current number of hours, whichever comes first 5

Proposed Changes: SORE Credit Lifetime • Credit lifetime would approximate useful life of equipment/engine

Proposed Changes: SORE Credit Lifetime • Credit lifetime would approximate useful life of equipment/engine (i. e. , 5 years) • U. S. EPA is also considering limiting credit life 6

Proposed Changes: SORE Discounting Credits • Credits would be discounted by 20% each year

Proposed Changes: SORE Discounting Credits • Credits would be discounted by 20% each year • Encourage manufacturers to use credits early • Encourage manufacturers to introduce cleaner engines earlier 7

Proposed Changes: SORE Existing Credits • Manufacturers who currently own credits would have five

Proposed Changes: SORE Existing Credits • Manufacturers who currently own credits would have five years to use the credits • Credits were expected to be used to ease burden of compliance during transitional period from Tier 1 to Tier 2, but ended up being banked for years 8

Proposed Changes: SORE Other Changes • Require English language contact for warranty concerns •

Proposed Changes: SORE Other Changes • Require English language contact for warranty concerns • Enforcement Bond to ensure anyone selling is doing so in good faith 9

Background: LSI ≤ 1 Liter • May 2006, Board approved more stringent emission standards

Background: LSI ≤ 1 Liter • May 2006, Board approved more stringent emission standards for LSI • LSI ≤ 1 liter displacement not addressed at that time 10

LSI > 1 liter LSI ≤ 1 liter ≥ 225 cc SORE 80 -225

LSI > 1 liter LSI ≤ 1 liter ≥ 225 cc SORE 80 -225 cc Standards in g/k. W-hr Current HC+NOx Standards 11

Proposed Changes: LSI ≤ 1 Liter Exhaust Emission Standards Model Year Engine Disp. Durability

Proposed Changes: LSI ≤ 1 Liter Exhaust Emission Standards Model Year Engine Disp. Durability Period HC+NOx (g/k. W-hr) Carbon Monoxide (g/k. W-hr) > 1. 0 liter 5000 hours or 7 years 2. 7 4. 4 2010 and > 1. 0 liter subsequent 5000 hours or 7 years 0. 8 20. 6 Proposed < 1. 0 liter 2010 and subsequent 1, 000 hours or 2 years 8. 0 549 2007 -2009 12

LSI > 1 liter LSI ≤ 1 liter ≥ 225 cc SORE 80 -225

LSI > 1 liter LSI ≤ 1 liter ≥ 225 cc SORE 80 -225 cc Standards in g/k. W-hr Proposed HC+NOx Standards 13

Proposed Changes: LSI ≤ 1 Liter Evaporative Emission Standards • Required to meet >225

Proposed Changes: LSI ≤ 1 Liter Evaporative Emission Standards • Required to meet >225 cc SORE evaporative emission standards for the near term • This may require the use of low permeation hoses, fuel tanks, and evaporative canisters • May choose performance-based or design-based standards 14

Proposed Changes: LSI ≤ 1 Liter Optional Standards • Would open possibility of funding

Proposed Changes: LSI ≤ 1 Liter Optional Standards • Would open possibility of funding programs • What should the standards be? 15

Information and Contact Information • Board Hearing expected in Spring 2008 Please send comments

Information and Contact Information • Board Hearing expected in Spring 2008 Please send comments to Yun Hui Park email: ypark@arb. ca. gov Or call: (626)450 -6263 16