FLMs, PSD Increment, and AQRVs: the Oregon experience WESTAR Fall Technical Conference Seattle September 2003 Philip Allen, Oregon DEQ

Overview Class I Area Increment & AQRVs Oregon’s permit process EPA & FLMs Class I areas Standards and criteria levels Example results

Federal Class I Areas: Oregon and Washington (NPS, Forest Service Region 6)

U.S.D.A. Forest Service Regions Region 6

Single Source NSR AQ Analysis Scope –Class II NAAQS and PSD Increment –Class I NAAQS, PSD Increment, AQRVs Comments/input on the AQ analysis –Recommendations from FLM and other agencies (states, EPA as available) –Final recommendation based on DEQ review of impacts vs. standards, and FLM and other comments.

Protocol Development Final Protocol AQ Analysis by consultant Review Completed DEQ Review < 45 days since Completeness Protocol Review Target is < 21 days DEQ Review DEQ: Single source AQ Analysis Timeline FLM Input FLM Input Application submittal Completeness Determination Completeness Determination < 10 days DEQ Review

Protocol Development Initial informal discussions with consultant –Location of proposed source –Type and availability of met data –Availability of background data –Provide consultant initial guidance Protocol meeting –Scheduled in coordination with DEQ Regional Office –Attended by HQ AQ analyst, RO permit engineer, FLM, client, modeling consultant, and other client consultants.

Protocol Development (cont.) Protocol meeting scope –Type and size of new or modified source –Applicable AQ standards Class II and Class I NAAQS and PSD Increment Class I AQRV analysis required or requested ? –Models for near-source impact analysis and long range transport Aermod-Prime/ISCPrime Calpuff Lite/Calpuff Other

Protocol Development (cont.) Protocol meeting scope (cont.) –Met data Screening met NWS On-site –Background data –Competing sources

Class I Area Visibility Monthly f(RH)

Class I Area Monthly Reference Background

Protocol guidance: AQRV calculations

AQRV Criteria Levels

PM10 speciation

Modeling guidance: Postutil visibility parameters

Modeling guidance: Calpost visibility parameters

Modeling guidance: Postutil deposition parameters

Class I Area Impacts EPA regulated –NAAQS –PSD Increment Federal Land Manager (FLM) regulated –Air Quality Related Values (AQRVs) S deposition N deposition Visibility –Ammonium Sulfate [(NH 4 ) 2 SO 4 ] –Ammonium Nitrate [NH 4 NO 3 ] –Particulate Matter (PM) –Ozone [O3]

Example: Class I PSD Increment

Example: Class I AQRVs - Deposition

Example: Class I AQRVs – Visibility

How it has worked for DEQ and FLMs California-Oregon Border (COB) project –Pacific Power –Bonanza (~ 30 km ESE of Klamath Falls) –Gerhart Wilderness Class I Area deposition ~> DAT Klamath Generation Facility (KGF) –Visibility ~> 5% –Offsets Pope and Talbot (Halsey) –Visibility ~> 5% –Deposition <= DAT

How it has worked for DEQ and FLMs DEQ views Class I PSD and AQRV analysis as a collaborative effort with EPA and the FLMs DEQ provides the door to FLM review: from protocol to application submittal prepare the source and their consultant for the FLM review of AQRV impacts Coordination with FLMs throughout process –Prevents surprises at end (get problems addressed early) –Consultant and source know what is expected –Accelerates review of the application –Fosters culture where FLM is considered the expert on AQRVs, and manager of their respective Class I areas.