# MDE MARYLAND DEPARTMENT OF THE ENVIRONMENT 1800 Washington Boulevard • Baltimore MD 21230 410-537-3000 • 1-800-633-6101 • www.mde.maryland.gov LanyHogan Governor Boyd Rutherford Lieutenant Governor
Mr. Shawn M. Garvin Regional Administrator 

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U.S. Environmental Protection Agency, Region III 1650 Arch Street (3RAOO) Philadelphia, Pennsylvania 19103-2029 Dear Mr. Garvin: 

### RECEIVED**t~.J** 

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## l 2 015 Ben Grumbles Secretary

EPA. R GGION Ill OFFICEOFRW !ONAL**AL>MINili'I'I~A'l'OR** 

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## DEC 2 ? 

## 2015 DivisionJ)iroctQr:l3APOO) The purpose of this letter is to submit the enclosed State ImplementatiOn Plan**~~IP)** Revision #15-05 concerning Maryland's opacity regulations. This SIP revision includes new regulations and amendments under COMAR 26.11.01 General Administrative Provisions and new regulations under a new chapter COMAR 26.11

.31 Quality Assurance Requirements for Continuous Opacity Monitors (COMs). The actions included in this SIP revision are described in detail in paragraphs 2 through 5 of this letter. Amendments to another chapter COMAR 26.11.09.01 and 05 were'·coinpleted as part of the same administrative process and these regulations are mentioned in this package. Due to evolving EPA guidance regarding opacity SIPs, COMAR 26.11.09.01 and .05 will be revised before these regulations are submitted as a SIP revision. COMAR 26.11.09.01 and .05 are not part of this SIP revision. The Department also requests that Technical Memorandum 90-01 (TM) which embodies the current enforcement policies and quality assurance criteria be removed from the SIP. The first action ofthis SIP Revision added new definitions and aligned requirements for continuous opacity monitors (COMs) and continuous emission monitors (CEMs) into two separate regulations. The action amended Regulations .01 and .05, repealed existing Regulations .10 and .11 and adopted new regulations .10 and .11 under COMAR 26.11.01 General Administrative Provisions. The Notice ofProposed Action was published in the 

### Maryland Register on January 29, 2010. A public hearing was held on March 3, 2010. The action was adopted on Apri114, 2010. The Notice ofFinal Action was published on May 7, 2010 and the new regulations and amendments became effective on May 17, 2010. All administrative procedures were properly followed throughout the adoption process. The second action of this SIP revision adopted quality assurance requirements for CO Ms. The action adopted new Regulations .01- .12 under a new chapter COMAR 26.11.31 Quality Assurance Requirements for Continuous Opacity Monitors. The Notice of Proposed Action was published in the 

### Maryland Register on January 14, 2011. A public hearing was held on February 15, 2011. The action was adopted on May 16, 2011. The Notice ofFinal Action was published on June.3, 2011 and the new Regulations became effective on June 13, 2011. All administrative procedures were properly followed throughout the adoption process. The third action ofthis SIP revision made minor revisions to the regulations addressing COMs and CEMs. The action amended Regulations .10 and .11 under COMAR General Administrative

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### Mr. Shawn Garvin Page2 Provisions. The Notice of Proposed Action was published in the Maryland Register 

### on January 14, 2011. A public hearing was held on February 15, 2011. The action was adopted on July 29, 2011. The Notice ofFinal Action was published on August 12, 2011 and the amendments became effective on August 22, 2011. All administrative procedures were properly followed throughout the adoption process. The fourth action of this SIP revision affected one CO MAR chapter. It 

### amended Regulations .10 and .11 under COMAR General Administrative Provisions. The Notice of Proposed Action was published in the Maryland Register 

### on April22, 2011. A public hearing was held on July 11, 2011. The action was adopted on July 29, 20 1 1. The Notice of Final Action wa published on Augu 

### t 12, 2011 and the new regulations became effective on August 22, 2011. All administrative procedures were properly**follow~d** 

### throughout the adoption process. I certify that the electronic copy ofthis SIP submittal (enclosed) is an exact duplicate ofthe official hard copy. If

### you have any questions concerning this SIP action, please feel free to call me at (420) 537-3084 or Mr. 

### George (Tad) S. Abum, Jr., Director ofthe Air and Radiation Management Administration, at 410

-537

-3255.

Secretary

·.

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