SCAPCA ORDER ISSUED IN ACCORDANCE WITH : RCW 70.94.141 - RCW 70.94.170AND SCAPCA REGULATION I, SECTION 2.01, 2.02, AND 2.05



## ORDER #96-06 ORDER TO ESTABLISH VOLUNTARY EMISSIONS LIMITS FOR KAISER ALUMINUM 

### &_ CHEMICAL CORPORATION'S INDUCTION FURNACES PURSUANT TQ

DATE: DATE MODIFIED.i. DATE MOOIFIED.i. DATE MODIFIED.i. ISSUEDTO: SITE LOCATION.i.

FACILITY CONTACT:
MAILINGADDRESS.i.
SOURCE: WAC 173-400-091 April 24, 1996 May 8, 1996(correctionto Order #) October4, 2000 (Additionof Condition F) October 19, 2000 (correctionto Condition B) KaiserAluminum & Chemical Corporation TrentwoodWorks 15000 EEuclid Avenue Spokane, WA Pat Blau (509)927-6350 P.O. Box 15108 Spokane, WA 99215-5108 Induction Furnaces, RM-21 SecondaryAluminum Production Facility

Kaiser Aluminum & Chemical Corporation (Kaiser) operates a secondary aluminum productionfacilityat 15000E. Euclid Avenue, Spokane, WA. Kaiser's induction furnaces have the potential to emit about 76.2 tons of particulate matter (PM) per year as calculated assuming maximum allowable emissions of 0.1 grains per dry standard cubic foot. As part of the attainment demonstration in the State Implementation Plan (SIP), emissions were modeled, including those from Kaiser's induction furnaces. Kaiser's assumed emissionsfor this modeling exercise were higherthan actual emissions but much lower than the potential to emit. In an effort to maintain the validity of the SIPattainment demonstration, Kaiser has voluntarily requested that PM 10 emissions from the inductionfurnaces be limitedto a level such that Kaiser's potentialto emit will be equal to or less than the levels used for the SIP modeling. As allowed in WAC 173-400-091, Kaiser has requested, in Raymond

### J. Milchovich's letter, dated August 8, 1995,voluntaryemission limits on the induction furnaces' potential to emit. Revisions to the order have been made as requested in Patrick Blau's letter, dated March 10, 1999. Source testing at the facility has shown that PM emissions from the inductionfurnaces are less than 0.020 grains per dry standard cubic foot, corresponding to 83.0 pounds of PM emitted perday. The request has been reviewed by SCAPCA. The following potentialto emit limitationshall be met bythe facility as required in E. below: 1. PM10 emissionsfrom the two inductionfurnaces combined shall not exceed 83.0 pounds per day. To ensurethatthe above emission limit is met, thefacility shall meetthe following: A. Visible emissions, as measured by EPA Reference Method 9, shall not exceed 10% (three-minuteaverage). B. SCAPCA may require testing to verify compliance with the 83.0 pounds per day PM10 emissions limit. Testing shall be done in accordance with EPA reference methods as found in 40 CFR Parts 51 and 60 (1995). PM and/or PM10 emissions shall be determined from the average of three valid 1-hour, or longer, test runs and shall include front and back half particulatematter. PM10 emissions shall be assumed to equal PM emissions unless Kaiser provides appropriate technicaldocumentationto demonstrateotherwise. Upon submittal of such documentation, SCAPCA may revisethe methodfordetermining PM 10emissions. C. An operation and maintenance plan for the induction furnaces' baghouse shall be developed and submitted to SCAPCA for approval within 30 days of the effective date of this order. The plan shall include, at a minimum:

· routine maintenanceactivities, required to keep the control system in proper operating condition, including manufacturer recommended operation and maintenanceprocedures

· a description of recordkeeping activities, including those records being kept, method(s) of recordkeeping, and length of timethat records are kept. D. Maintenancerecords shall be kept for the baghouse. Compliance with this condition may

Kaiser Voluntary Emission limit Induction Furnaces SCAPCA Order #96-06 Date Issued: April 24. 1996 Date Modified: May 8. 1996 Date Modified: October4, 2000 Date Modified: October 19, 2000 Page 2be demonstrated by implementing a computerized preventative maintenance system that regularly schedules and tracks maintenance activities. All records shall be kept for a minimumoftwo years. E. This order shall take effect upon EPA approval of SCAPCA Order 91-01 as· part of the Washington State ImplementationPlan. F. Daily allowable emissions from the inductionfurnaces may be increased above the levels allowed in this order if such increases are approved under SCAPCA's new source review program as being in compliance with WAC 173-400-112 and WAC 173-400-113. Any such approval, issued under SCAPCA's new source review program, shall include new daily allowableemissions levels which supersedethe levels establishedinthisorder. Any proposed deviationfrom this order shall require revision or revocationofthis order. The revisionor revocationshall occurpriortothe deviation. This order does not relieve the proponent of the obligation to comply with all other applicablefederal, state and local regulationsand requirements. The provisions of this authorization are severable and, if any provision of this order, or the applicationof any provisionofthis order to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this order shall not be affectedthereby. This order may be appealedto Pollution Control Hearings Board c/o EnvironmentalHearings Office P.O. Box 40903 42246th Avenue SE, Building #2, Rowe Six lacey,WA 98504-0903 Appeals must be filed within 30 days after receipt ofthis order. Concurrentlya copy of the appeal must be sent to the Spokane County Air Pollution Control Authority, West 1101 College Avenue, Room 403, Spokane, WA 99201. ORDERED BY:

ERIC P. SKELTON DIRECTOR

Kaiser Voluntary Emission limit Induction Furnaces SCAPCA Order #96-06 Date Issued: April 24, 1996 Date Modified: May 8, 1996 Date Modified: October 4, 2000 Date Modified: October 19, 2000 Page 3