Background

The Mendenhall Valley, Alaska, area was designated nonattainment for PM₁₀ and classified as moderate upon enactment of the Clean Air Act Amendments in 1990.

On June 22, 1993, Alaska submitted a PM₁₀ attainment plan, and EPA announced it’s proposed approval of the plan on December 22, 1993 (58 FR 67754 (PDF)(6 pp, 826 K, About PDF)).

On March 24, 1994, EPA approved the Mendenhall Valley PM₁₀ attainment plan (59 FR 13884 (PDF)(3 pp, 410 K)).

Summary

The plan relies on control strategies needed to assure attainment of the PM₁₀ National Ambient Air Quality Standards (NAAQS). The strategy focuses on control of wood smoke emissions, and fugitive dust sources.

Rules

• Ordinance of the City and Borough of Juneau, Serial No. 91-52, January 6, 1992, amending Wood smoke control code to lower the particulate count threshold, and to prohibit the burning in woodstoves of substances other than paper, cardboard and untreated wood.
• Ordinance of the City and Borough of Juneau, Serial No. 91-53, January 6, 1992, amending the woodsmoke control fine schedule to increase the fines for violations of the woodsmoke control code.
• Ordinance of the City and Borough of Juneau, Serial No. 93-01, February 8, 1993, setting boundaries for regrading and surfacing.
• Ordinance of the City and Borough of Juneau, Serial No. 93-06, April 5, 1993, setting boundaries for regrading and surfacing.
• By Resolution of the City and Borough of Juneau, Serial No. 1612, December 7, 1992, adopting Memorandum of Understanding between ADEC, ADOT and CBJ, January 6, 1993, sharing responsibility and authority for resolving the PM-10 nonattainment problems associated with road dust in the Mendenhall Valley.
• Ordinance of the City and Borough of Juneau, Serial No. 93-39am, November 17, 1993, creating Local Improvement District No. 77 of the City and Borough, setting boundaries for drainage and paving of streets in the Mendenhall Valley.

Contingency Measures

• City and Borough of Juneau Building Code amended to require R-30 ceilings and R-19 walls and floors. Formulas adopted for percentage of window coverage allowed.
• City and Borough of Juneau regulations disallow woodstoves as sole heat source and require back-up heat system to 70 degrees fahrenheit.
• Additional road paving projects.
• Inducements to reduce stove and fireplace use and additional public information on residential wood stoves.

EPA Effective Date

April 25, 1994