Klamath Falls Maintenance Plan                       

Klamath Falls was one of seven areas in Oregon that violated public health standards for particulate matter in Oregon based on data collected in the 1980's and was designated nonattainment by the Environmental Protection Agency (EPA).  PM₁₀ refers to particles in 10 microns in diameter and smaller.  Particles of this size can lodge deep in the lungs for weeks and months and can aggravate asthma, heart disease and other circulatory and respiratory conditions.

DEQ studied Klamath Falls to assess its future air quality.  DEQ in consultation with the community determined the need to continue efforts started in the 1990's to reduce particulate pollution such as PM₁₀.  A plan was prepared by DEQ in October 2002 and sent to EPA for approval.  DEQ's plan, formally called a State Implementation Plan, is presented at the link below.  EPA approved the Klamath Falls plan in December 2003 and redesignated the Klamath Falls nonattainment area to attainment for the PM₁₀ standards.

Reports

• State Implementation Plan Revision for Particulate Matter (PM₁₀ in the Klamath Falls Urban Growth Boundary, October 2002.

     Appendices

• D6-1, Technical Analysis Protocol
• D6-2, Klamath Falls Urban Growth Boundary Monitoring Network Sites (Map)
• D6-3, PM₁₀ Saturation Survey
• D6-4, Emission Inventory and forecast
• D6-5, Conformity Process
• D6-6, Historical and Projected Population, Households, Employment and Weather (2.21 MB)
• D6-7, Klamath County Ordinance and Other Agreements (6.05 MB)
• D6-8, Design Value and 2015 Projections

• EPA Federal Register.  "Approval and Promulgation of Air Quality Implementation Plans; State of Oregon; Klamath Falls PM-10 Nonattainment Area Redesignation to Attainment and Designation of Areas for Air Quality Planning Purposes", October 2003

For more information contact Larry Calkins in Hermiston at 541-567-8297 x25 or by email

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