40 C.F.R. § 52.2021

Classification of regions

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The Pennsylvania plan was evaluated on the basis of the following classifications:

Air quality control region	Pollutant
Air quality control region	Particulate matter	Sulfur oxides	Nitrogen dioxide	Carbon monoxide	Ozone (hydrocarbons)
Metropolitan Philadelphia Interstate	I	I	III	I	I
Northeast Pennsylvania-Upper Delaware Valley Interstate	I	II	III	III	III
South Central Pennsylvania Intrastate	I	II	III	III	III
Central Pennsylvania Intrastate	I	III	III	III	III
Southwest Pennsylvania Intrastate	I	I	III	I	I
Northwest Pennsylvania-Youngstown Interstate	I	II	III	III	III

[37 FR 10889, May 31, 1972, as amended at 39 FR 16347, May 8, 1974; 45 FR 33627, May 20, 1980]

Notes of Decisions

Cited in 1 case, 1978–1978 · leading case: United States v. West Penn Power Co., 460 F. Supp. 1305 (W.D. Pa. 1978).

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United States v. West Penn Power Co., 460 F. Supp. 1305 (W.D. Pa. 1978). “This plant exceeded in 1972 and continues to exceed the National Ambient Air Standards for SO2 (40 CFR 52.2021). 4 The Pennsylvania SIP provides for an emission limitation of .”

Annotations are extracted automatically from the opinions in the Syfert caselaw corpus and ranked by authority, recency, and treatment. Dots show Syfertize treatment of the citing case itself.