(1) “Actively-Purged Carbon Canister” means a carbon canister which draws in ambient air to purge adsorbed compounds using a vacuum created by the intake system of the engine.

(2) “ANSI/OPEI B71.10-2013” means ANSI/OPEI B71.10-2013, American National Standard for Off-Road Ground-Supported Outdoor Power Equipment--Gasoline Fuel Systems--Performance Specifications and Test Procedures, published August 26, 2013, and which is incorporated by reference in this Article.

(3) “ANSI/OPEI B71.10-2018” means ANSI/OPEI B71.10-2018, American National Standard for Off-Road Ground-Supported Outdoor Power Equipment--Gasoline Fuel Systems--Performance Specifications and Test Procedures, published November 12, 2018, and which is incorporated by reference in this Article.

(4) “CP-901” means Certification Procedure for Evaporative Emission Control Systems on Engines With Displacement Less Than or Equal to 80 Cubic Centimeters, adopted July 26, 2004, and amended September 18, 2017.

(5) “CP-902” means Certification Procedure for Evaporative Emission Control Systems on Small Off-Road Engines, adopted July 26, 2004, and last amended January 1, 2023.

(6) “Diurnal Emissions” means evaporative emissions resulting from the daily cycling of ambient temperatures and include resting losses, and permeation emissions, as measured according to test procedures incorporated in this Article.

(7) “Equivalent Fuel Line” means a fuel line that permeates less than the nominal fuel line being replaced and less than or equal to 15 grams of ROG per square meter of surface area in contact with fuel per day when tested per SAE J1737, SAE J30, SAE J1527, or, only for fuel lines with inner diameter 4.75 mm or less, SAE J2996 at 40°C or higher, and ambient pressure using LEV III certification gasoline. The fuel defined in 40 CFR Part 1060.515(a)(2) or CE10 may be used as an alternative test fuel.

(8) “Evaporative Emissions” means emissions that result from the evaporation of reactive organic gases into the atmosphere.

(9) “Evaporative Emission Control System” means the fuel system and associated components that are designed to control evaporative emissions.

(10) “Evaporative Family” means small off-road engine or equipment models in the same engine class that are grouped together based on similar fuel system characteristics as they relate to evaporative emissions or zero-emission small off-road equipment grouped together based on similar performance characteristics. For engines with displacement less than or equal to 80 cubic centimeters (cc), all models using fuel tanks and fuel lines constructed by the same process with the same material and the same permeation control may be grouped into one evaporative family. The engine family and the evaporative family may be considered equivalent at the manufacturer's discretion.

(11) “Evaporative Model Emission Limit (EMEL)” means the diurnal or hot soak plus diurnal emission rate declared by the manufacturer for a model within an evaporative family. The declared rate must be based on evaporative emissions test results for the model of engine or equipment within the evaporative family that is expected to exhibit the highest evaporative emission rate relative to the applicable diurnal or hot soak plus diurnal emission standard, obtained by following TP-902.

(12) “Evaporative Family Emission Limit Differential (EFELD)” means the emission rate differential between the diurnal or hot soak plus diurnal emission standard in Tables 1, 2 or 3 of section 2754(a) for the model of engine or equipment within the evaporative family that is expected to exhibit the highest evaporative emission rate relative to the applicable diurnal or hot soak plus diurnal emission standard and the EMEL declared for the model and is applicable to the entire evaporative family represented by the model.

(13) “Executive Order of Certification” means an order signed by the Executive Officer that documents certification of evaporative emission control systems on engines or equipment to the evaporative emission standards of this Article.

(14) “Fuel line” means hose or tubing designed to contain liquid fuel (including molded hose or tubing). This does not include any of the following:

(15) “Holder” means the person to whom the Executive Order of Certification is issued.

(16) “Hot Soak Emissions” means evaporative emissions that occur for the one-hour period following the termination of engine operation.

(17) “LEV III certification gasoline” means certification gasoline fuel for LEV III light-duty vehicles and medium-duty vehicles as defined in part II, section A.100.3.1.2 of the California 2015 and Subsequent Model Criteria Pollutant Exhaust Emission Standards and Test Procedures and 2017 and Subsequent Model Greenhouse Gas Exhaust Emission Standards and Test Procedures for Passenger Cars, Light Duty Trucks, and Medium-Duty Vehicles, as last amended September 2, 2015.

(18) “Manufacturer” means either an engine manufacturer or equipment manufacturer.

(19) “Nominal Capacity” means the volume of fuel indicated by the manufacturer that represents the maximum recommended fill level.

(20) “Nominal Fuel Line” means the fuel line that is used by an engine or equipment manufacturer to certify the evaporative emissions control system on a small off-road engine.

(21) “Organic material hydrocarbon equivalent” means the total mass of hydrocarbon molecules, ethanol, and other organic compounds, as measured under the test procedures incorporated in this Article.

(22) “Passively-Purged Carbon Canister” means a carbon canister which draws in ambient air to purge adsorbed compounds using a vacuum created within the fuel tank.

(23) “Permeation Emissions” means evaporative emissions that result from reactive organic gas molecules penetrating through the walls of fuel system components and evaporating on outside surfaces, as measured by test procedures incorporated in this Article. Permeation emissions are a component of diurnal emissions, as measured by test procedures incorporated in this Article.

(24) “Permeation Rate” means the total mass of reactive organic gas molecules passing through the internal surface area of a fuel tank or fuel line in a 24-hour period, as measured by test procedures incorporated in this Article.

(25) “Production Volume” means the number of engines or equipment units, subject to the requirements of this Article, produced in an evaporative family for which the Holder has a reasonable basis to conclude that sale was or may be made to ultimate purchasers in California. A Holder may estimate production volume through market analysis. An educated and consistent estimate with the best available documentation will be acceptable as the final report of production volume in California.

(26) “Reactive Organic Gases (ROG)” means any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, and excluding the following:

(2) the following low-reactive organic compounds which have been exempted by the U.S. EPA:

(27) “Running Loss Emissions” means evaporative emissions from a small off-road engine that occur while it is being operated.

(28) “SAE J30” means SAE J30, Fuel and Oil Hoses, Revised February 2012, and which is incorporated by reference in this Article.

(29) “SAE J1527” means SAE J1527, Marine Fuel Hoses, Revised February 2011, and which is incorporated by reference in this Article.

(30) “SAE J1737” means SAE J1737, Test Procedure to Determine the Hydrocarbon Losses from Fuel Tubes, Hoses, Fittings, and Fuel Line Assemblies by Recirculation, Revised August 2019, and which is incorporated by reference in this Article.

(31) “SAE J1930” means SAE J1930, Electrical/Electronic Systems Diagnostic Terms, Definitions, Abbreviations, and Acronyms--Equivalent to ISO/TR 15031-2, Revised March 2017, and which is incorporated by reference in this Article.

(32) “SAE J2996” means SAE J2996, Small Diameter Fuel Line Permeation Test Procedure, Issued January 2013, and which is incorporated by reference in this Article.

(33) “SHED” (Sealed Housing Evaporative Determination) means the enclosure and associated equipment used to determine evaporative emissions. A SHED must meet the design specifications in 40 Code of Federal Regulations Part 86.107-96.

(34) “Small Production Volume Tank Exemption” applies to all models with identical tanks produced by an engine or equipment manufacturer with total California production volume of 400 or fewer units per year.

(35) “TP-901” means Test Procedure for Determining Permeation Emissions from Small Off-Road Engine Fuel Tanks, adopted July 26, 2004, and last amended January 1, 2023.

(36) “TP-902” means Test Procedure for Determining Evaporative Emissions from Small Off-Road Engines, adopted July 26, 2004, and last amended January 1, 2023.

(37) “Walk-Behind Mower” means a grass-cutting product which has: