PSD Dates Page

Washington State Department of Ecology

AIR QUALITY

Prevention of Significant Deterioration Baseline Dates

Major Source Baseline Dates were set by rule by EPA in the past.

Pollutant	Date of Baseline
PM/PM10.	January 6, 1975
SO2	January 6, 1975
NOx	February 8, 1988

Minor Source Baseline dates are set for each Air Quality control region of the State, and for each pollutant.

TSP

AQCR	AQCR Name	PSD #	Applicant	City	Date
062	E. WA-Idaho	X79 – 03-M	Murphy Brothers, Inc.	Spokane	3-2-79
193	Portland-SW WA	92-03	Weyerhaeuser	Longview	4-28-92
227	N. WA	X79-07	Boise Cascade Lumber	Kettle Falls	3-20-79
228	Oly-NW WA	X80-02	Puget sound Power & Light	Pt. Whitehorn	8-23-79
229	Puget Sound	X79-9	U.S. Oil & Refining Co.	Tacoma	2-2-79
230	S. Central WA	X77-04	Boise Cascade	Wallula	12-14-77

SO₂

AQCR	AQCR Name	PSD #	Applicant	City	Date
062	E. WA-Idaho	None	Washington State University	Pullman	8-31-79
193	Portland-SW WA	92-03	Weyerhaeuser	Longview	4-28-92
227	N. WA	X82-04	ALCOA	Wenatchee	6-28-81
228	Oly-NW WA	X80-02	Puget sound Power & Light	Pt. Whitehorn	8-23-79
229	Puget Sound	X79-9	U.S. Oil & Refining Co.	Tacoma	2-2-79
230	S. Central WA	X77-04	Boise Cascade	Wallula	12-14-77

NO₂

AQCR	AQCR Name	PSD #	Applicant	City	Date
062	E. WA-Idaho	90-2	Pacific Gas Transmission	Rosalia	2-20-90
193	Portland-SW WA	88-3	James River Corp.	Camas	10-19-88
227	N. WA
228	Oly-NW WA	90-1	Daishowa America	Port Angeles	11-22-89
229	Puget Sound	90-3	Ash Grove Cement West, Inc.	Seattle	3-26-90
230	S. Central WA	92-02	Pacific Gas Transmission	Starbuck	2-11-92

PSD Map

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