Section 1956.5 - Exhaust Emission Standards and Test Procedures-1979 Model-Year Heavy-Duty Engines and Vehicles(a) The exhaust emissions from new 1979 model-year heavy-duty engines, except engines used in medium-duty vehicles, shall not exceed: Exhaust Emission Standards* (grams per brake horsepower hour) |
| Note | Hydrocarbons | Carbon Monoxide | Oxides of Nitrogen | Hydrocarbons Plus Oxides of Nitrogen |
| 1 | 1.0 | 25 | 7.5 | -- |
| 2 | 1.5 | 25 | 7.5 | -- |
| 3 | -- | 25 | -- | 5 |
| _______ |
* The three sets of standards shall be alternatives. A manufacturer shall have the option of showing compliance with any one of the three sets.
NOTES:
1. Measured by procedures specified in Subpart H (gasoline-powered engines) or Subpart J (diesel-powered engines) of Part 86, Title 40, Code of Federal Regulations, as they existed on September 8, 1977.2. Measured by procedures specified in Subpart D (gasoline and diesel-powered engines) of Part 86, Title 40, Code of Federal Regulations, as they existed on September 8, 1977.3. Measured by the procedures specified in Subpart D, Subpart H, or Subpart J, as applicable, of Part 86, Title 40, Code of Federal Regulations, as they existed on September 8, 1977.(b) The test procedures for determining compliance with these standards are set forth in "California Exhaust Emission Standards and Test Procedures for 1979 and Subsequent Model-Year Heavy-Duty Engines and Vehicles," adopted October 5, 1976, as last amended March 1, 1978.(c) A manufacturer may elect to certify heavy-duty vehicles of less than 10,000 pounds maximum gross vehicle weight rating as medium-duty vehicles under Section 1959.5 of this chapter, in which event heavy-duty emission standards and test procedures shall not apply.(d) This regulation shall remain in effect until December 31, 1989, and as of that date is repealed unless a later regulation deletes or extends that date. Notwithstanding the repeal or expiration of this regulation on December 31, 1989, the provisions of the regulation as they existed prior to such repeal or expiration shall continue to be operative and effective for those events occurring prior to the repeal or expiration.Cal. Code Regs. Tit. 13, § 1956.5
Note: Authority cited: Sections 39600 and 39601, Health and Safety Code. Reference: Sections 39002, 39003, 43000, 43013, 43100, 43101, and 43104, Health and Safety Code.