Page:United States Statutes at Large Volume 104 Part 4.djvu/158

 104 STAT. 2474 PUBLIC LAW 101-549—NOV. 15, 1990 SEC. 203. EMISSION STANDARDS FOR CONVENTIONAL MOTOR VEHICLES. (a) STANDARDS. —Section 202 of the Clean Air Act (42 U.S.C. 7521) is amended by adding the following at the end thereof: "(g) LIGHT-DUTY TRUCKS UP TO 6,000 LBS. GVWR AND LIGHT-DUTY VEHICLES; STANDARDS FOR MODEL YEARS AFTER 1993. — "(1) NMHC, CO, AND NOj. — Effective with respect to the model year 1994 and thereafter, the regulations under subsection (a) applicable to emissions of nonmethane hydrocarbons (NMHC), carbon monoxide (CO), and oxides of nitrogen (NO,) from lightduty trucks (LDTs) of up to 6,000 lbs. gross vehicle weight rating (GVWR) and light-duty vehicles (LDVs) shall contain standards which provide that emissions from a percentage of each manufacturer's sales volume of such vehicles and trucks shall comply with the levels specified in table G. The percentage shall be as specified in the implementation schedule below: TABLE G—EMISSION STANDARDS FOR NMHC, CO, AND NO^ FROM UGHT- DUTY TRUCKS OF UP TO 6,000 LBS. GVWR AND UGHT-DUTY VEHICLES Vehicle type LDTs (0-3,750 lbs. LVW) and light-duty vehicles LDTs (3,751-5,750 lbs. LVW) Column A (5 yrs/50,000 i NMHC CO 0.25 3.4 0.32 4.4 mi) NO, 0.4* 0.7" Column B (10 yrs/100,000 mi) NMHC CO NO, 0.31 4.2 0.6* 0.40 5.5 0.97 Standards are expressed in grams per mile (gpm). For standards under column A, for purposes of certification under section 206, the applicable useful life shall be 5 years or 50,000 miles (or the equivalent), whichever first occurs. For standards under column B, for purposes of certification under section 206, the applicable useful life shall be 10 years or 100,000 miles (or the equivalent), whichever first occurs. 2004, in lieu of the 0.4 and 0.6 standards for NO,, the applicable standards for NO, shall be 1.0 gpm. for a useful life of 5 years or 50,000 miles (or the equivalent), whichever first occurs, and 1.25 gpm for a useful life of 10 years or 100,000 miles (or the equivalent) whichever first occurs. ••This standard does not apply to diesel-fueled LDTs (3,751-5,750 lbs. LVW). " IMP L EM ENTATION SCHEDULE FOR TABLE G STANDARDS 1994 1995 after 1995 Model year Percentage * 40 80 100 "(2) PM STANDARD. — Effective with respect to model year 1994 and thereafter in the case of light-duty vehicles, and effective with respect to the model year 1995 and thereafter in the case of light-duty trucks (LDTs) of up to 6,000 lbs. gross vehicle weight rating (GVWR), the regulations under subsection (a) applicable to emissions of particulate matter (PM) from such vehicles and trucks shall contain standards which provide that such emissions from a percentage of each manufacturer's sales volume of such vehicles and trucks shall not exceed the levels
 * In the case of diesel-fueled LDTs (0-3,750 Ivw) and light-duty vehicles, before the model year
 * Percentages in the table refer to a percentage of each manufacturer's sales volume.

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