California Passenger Cars and Light Trucks Emission Certification Standards
for Model Years 2001-2006 

		Vehicle Useful Life
		10 Years / 100,000 Miles
Vehicle Type	Emission Category	THC(a)	NMHC(b)	NMOG(c)	CO	NOx	PM	HCHO
Car	Tier 1	–	0.31	–	4.2	0.6	–	–
	TLEV	–	–	0.156	4.2	0.6	0.08(d)	0.018
	LEV	–	–	0.090	4.2	0.3	0.08(d)	0.018
	ULEV	–	–	0.055	2.1	0.3	0.04(d)	0.011
	ZEV	0.00	0.00	0.000	0.00	0.0	0.00	0.000
LDT1	Tier 1	–	0.31	–	4.2	0.6	–	–
	TLEV	–	–	0.156	4.2	0.6	0.08(d)	0.018
	LEV	–	–	0.09	4.2	0.3	0.08(d)	0.018
	ULEV	–	–	0.055	2.1	0.3	0.04(d)	0.011
	ZEV	0.00	0.00	0.000	0.00	0.0	0	0.000
LDT2	Tier 1	–	0.40	–	5.5	0.97	–	–
	TLEV	–	–	0.20	5.5	0.9	0.10(d)	0.023
	LEV	–	–	0.13	5.5	0.5	0.10(d)	0.023
	ULEV	–	–	0.07	2.8	0.5	0.05(d)	0.013

Source: U.S. Environmental Protection Agency, Office of Transportation and Air Quality, EPA 420-B-00-001.
(Additional resources: www.epa.gov/otaq)

Note: After 2003, Tier 1 and TLEV standards will be eliminated. LDT1 = light truck (6,000 lbs.or less GVWR) up through 3,750 lbs. loaded vehicle weight; LDT2 = light truck (6,000 lbs. or less GVWR) greater than 3,750 lbs. loaded vehicle weight.

(a) THCE for methanol vehicles. Does not apply to CNG vehicles.
(b) THCE for Tier 0 methanol vehicles. NMHCE for other alcohol vehicles.
(c) NMHC for diesel-fueled vehicles.
(d) Diesel-fueled vehicles only.

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