Refueling Spillage Control For Small Off-Road Engines Air Resources Board August 6, 1998 Dean Bloudoff

Refueling Spillage Control Workshop The Components of Refueling Emissions Performance Specifications for ‘Spill- Proof’ refueling system. Preliminary Test Data. Spillage Emissions Inventory.

Components of Refueling Emissions Equipment Refueling Spillage. Vapor Displacement During Refueling Event. Container Spillage During Transport and Storage. Container Diurnal and Breathing or Resting Losses. Missing: Container Vapor Displacement

Equipment Categories Lawn and Garden - 4,487,694 Pleasure Craft (Recreational Marine) - 858,480 Recreational Equipment (Off-Road) - 471,238 Light Commercial Equipment - 296,117 Industrial Equipment - 6,972

Emissions Reductions Conservative Estimate Approximately 15 TPD of Hydrocarbons (HC). HC Emissions Only. Gasoline Fueled 2 and 4 Stroke Engines. Assume 100% Container Fills For hp. Assume Container Refueling For Some Categories >25 hp (ex: Personal Watercraft).

‘ Spill-Proof’ Container Performance Specifications Automatic Fuel Shut-Off To Prevent Overfilling. Container Closed When Not In Use (with or without nozzle attached). Container Vented Only Through Nozzle. Ability To Recover Displaced Refueling Vapors. Minimum Fuel Flow Rate (1 L in 15 Sec?). One Year Warranty.

Implementation Proposed Regulation Adopted By ARB Spring ‘99. Mfgr’s Comply w/ New Regulation Jan. 1, 2001 (Proposed). Average Container Life Span 6 years. Full Compliance by 2007.

Preliminary Test Data Developed Test Bench to Quantify HC Emissions. Conducted Controlled Refueling Tests.

Prototype Test Bench

Test Bench Data HC Emissions Using Portable 1 Sec Intervals. Constant Flow Rate In Duct, Monitored w/ Velocity Sensor. Ambient Temp and Pressure, Duct Temp. Container Weighed Before & After Refueling Event.

DRAFT ONLY

Conventional vs. Spillproof Data DRAFT ONLY

Spillage Emissions Inventory Assume 100% Container Fills For hp. Assume 100% Pump Fills >25 hp. Two Exceptions To Above: Personal Watercraft & Off-Road Recreation. Assume All Refuelings Are Fill-Ups

Spillage Emissions Factors Refueling Event: 17 g/event Transport & Storage: 20 g/gal Container Diurnal & Breathing: 1g/gal/day Displaced Vapor: 1g/gal

Next Steps Consensus Needed On Performance Specs. New Products Needed For Larger Container Openings. Emissions Data. Economic Impact Survey.

Tentative Regulatory Schedule Emissions Inventory Presented For Board Consideration December ‘98. January ‘99 Workshop For Proposed Control Measure. Staff Report For Proposed Control Measure Will Be Issued 45 Days Prior to Board Consideration in Spring ‘99.

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