STATE OF IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY

1410 NORTH HILTON. BOISE, IDAHO 83706. (208) 373-0502 JAMES E, RISCH, GOVERNOR TONI HARDESTY, DIRECTOR April 16, 2007

Elin Miller, Regional Administrator MS RA 140 U.S. EPA, Region 10 1200 Sixth Avenue Seattle, WA 98101 Re: State Implementation Plan Rule Revisions' Dear Ms. Miller: Enclosed for your review and approval are an original and four copies ofrevisions to the Departmentof Environmental Quality's (DEQ) Rules for the Control ofAir Pollution in Idaho, IDAPA 58.01.01. DEQ is seeking Environmental Protection Agency (EPA) approval ofthe following revisions as an updateto the contents ofthe Idaho State Implementation Plan (SIP), 40 CFR, Part 52, Subpart N: IDAPA Docket 58-0101-0601 - Regional Haze IDAPA Docket 58-0101-0602 - Annual Incorporation by Reference (2006) IDAPA Docket 58-0101-0603- Prohibition Against Construction of EGUs as defined in 40 CFR 60.24 These revisions tothe state ruleswere promulgated pursuantto the Environmental Protection and Health Act, Idaho Code, Sections 39-101 through 39-130. Review and approval by a DEQ Deputy Attorney Generalwas obtained at appropriate times throughoutthe rulemaking process. Rule adoption was made in accordancewith the requirements ofthe federal Clean AirActand applicable federal regulations. None ofthe revisions included in this submittal reflect a reduction in emission limits. As afollow-up to previous submittals, DEQ forwarded the following rule changes to EPA on May 22, 2003, April 2, 2004, July 13, 2005 and May 5, 2006for inclusion in the Idaho SIP. We understand these documents will be reviewed by your staff in the future. We mention these dockets here only for purposes ofensuring previous submittals do notslipfrom the SIP priority**I~t** 

### . Docket 58-0101-0102 - Soil Vapor Extraction Docket 58-0101-0103 - (a) Hospital/Medical/InfectiousWaste Incinerators, and (b) Annual Incorporation by Reference (2001) Docket 58-0101-0002 - Nonmetallic Mineral Processing Docket 58-0101-0202 - (a) Permitting Clarification, and (b) Annual Incorporation by Reference (2002)EIir1 Miller, EPA Regional Administrator April 16, 2007 Page 2

Docket 58-0101-0301 ­ Docket 58-0101-0304 ­ Docket 58-0101-0401 ­ Docket 58-0101-0402 ­ Docket 58-0101-0503 ­ Docket 58-0101-0505 ­ Docket 58-0101-0506 ­ Docket 58-0101-0507 ­ Docket 58-0101-0508 ­ Annual Incorporation by Reference (2003) New Source Review Permit to Construct Exemptions Annual Incorporation by Reference (2004) Regulated Air Pollutants Annual Incorporation by Reference (2005) Baseline Actual Emissions; Procedure for Transfer of PTC and Tier II Permits PTC Exemptions Facility Emissions Cap Ifyou oryour staffhave questions concerning any ofthese rules, please contact Martin Bauer, Air Quality Division Administrator, at 208-373-0440. Mr. Bauerand his staff are availableto provide assistanceto ensure Idaho's SIP is updated as soon as possible. Sincerely,

# ~I~ Toni Hardesty Director TH/ph Enclosures c: Martin Bauer, DEQ.w

STATE OF IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY

1410 NORTH HILTON. BOISE. IDAHO 83706. (20B) JAMES E. RISCH, GOVERNOR TONI HARDESTY. DIRECTOR

AMENDMENTTO THE RULES FORTHE CONTROLOF AIR POLLU'nON IN IDAHO

Pursuanttothe Environmental Protection and Health Act, Idaho Code 39-101 through 39-130, I herebysubmit amllmdments to the Rules forthe Control ofAir Pollution in Idaho (Air Rules), IDAPA 58.01.01, as edited in the attachments, as a revision to AppendixA3 ofthe Implementation Plan forthe Control ofAir Pollution in the State ofIdaho (Idaho SIP). The changes being submittedwere adopted as pending bythe Board of Environmental Quality and approved by the Idaho Legislature as indicated in the attachment. DATEDthis 16thday ofApril, 2007.

Toni Hardesty Director