STATE OF WASHINGTON 

DEPARTMENT OF ECOLOGY 

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IN THE MATTER OF COMPLIANCE BY 

Kaiser Aluminum &Chemica) Corporation 

Mead Works 

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ORDER No. DE OIAQIS-3285 

With Chapter 70.94 RCW and the Rules and 

Regulations of the Department of Ecology 

To: Mr. Steven G. Anderson 

Kaiser Aluminum & Chemical Corp. 

Mead Works 

E. 2111 Hawthorne Road 

Mead, W A 99021 

RCW 70.94.011, RCW 70.94.331(5), and RCW 70.94.141(3) provide the Department of Ecology the 

authority to issue orders to enforce the Washington Clean Air Act. WAC 175-475 sets statewide ambient 

air quality standards for carbon monoxide (CO), which are equivalent to federal health-based standards.· 

Spokane was already designated nonattainment for CO when the 1990 Amendments to the Clean Air Act 

were enacted on November 15, 1990. Spokane was classified "moderate" because the area had higher CO 

concentrations than the standards set by WAC 17 5-47 5. Because of violations of the CO standard in 

1995, Spokane was reclassified to "serious" and required to submit a revised State Implementation Plan 

(SlP) that met additional nonattainment requirements to ensure that the area would meet the CO standard. 

The Department has updated the SIP for Spokane to meet these requirements. As part of this update, the 

Depanment requested that the Kaiser Aluminum & Chemical Corporation model CO concentrations from 

its Mead Works, which are located within the Spokane CO nonauainment area. 

After evaluating the air quality modeling results, the Department finds that modeling predicts that the 

highest concentrations are near the CO standard. Therefore, the Department is requiring that Kaiser shall 

set an ambient air monitoring station at the location of the highest modeled CO concentration to verify 

continuing attainment of the CO standard. 

For these reasons, and in accordance with RCW 70.94.141(3), IT IS ORDERED that the Kaiser 

Aluminum & Chemical Corporation, Mead Works take the foHowing actions: 

1. Within 30 days of the date of this order. install and maintain an ambient CO monitoring station at 

the top of the hill lying between Fairview Road to the northwest and Gerlach Road to the 

southeast or at a different location as approved by the Department. The monitor sha11 be operated 

and maintained as described in the Washington State Department of Ecology Air Monitoring 

Quality Assurance Plan and Procedures Manual #95-201. 

2. CO monitoring shall be in operation for collecting data even though the smelter is not in 

operation. 

3. Kaiser shall repon CO monitoring data on the Air Monthly report. Kaiser shall report any CO 

excursions above the CO standards to the Department by E-mail within a week of occurrence. 

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Kaiser, Mead Works 

OIAQIS-3285 

Page two 

Failure to comply with this Order may result in the issuance of civil penalties or other actions, whether 

administrative or judicial, to enforce the terms of this Order. 

This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board, P.O. 

Box 40903, Olympja, Washington 98504-0903 within thirty (30) days of your receipt of this Order. 

Your appeal must also be sent to the Department of EcoJogy c/o the Industrial Section, P.O. Box, 

Olympia. Washington 98504-7706. Your appeal alone wiU not stay the effectiveness of this Order. Stay 

requests must be submitted in accordance RCW 43.21B.320. These procedures are consistent with 

ch.43.21B RCW. 

Dated this 24th day of October 2001 at Lacey, Washington. 

c .. f~p.{ulV<~ Industrial Section Manager 

Solid Waste and Financial Assistance Program 

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