DEPARTMENT of ENVIRONMENT 

and NATURAL RESOURCES 

PMB 2020 

JOE FOSS BUILDING 

523 EAST CAPITOL 

^ PIERRE, SOUTH DAKOTA 57501-3182 

lifilfAC[S.I]REAlPUlC[S. www.state.sd.us/denr 

January 21, 2011 

James B. Martin 

Regional Administrator 

U.S. Environmental Protection Agency, Region 8 

1595 Wynkoop Street 

Denver, CO 80202-1129 

Dear Mr. Martin: 

In a letter from Govemor Daugaard to you dated January 18, 2011 (see enclosure), the secretary 

of the Department of Environment and Natural Resources (DENR) was delegated as Govemor 

Daugaard's designee for the Air Quality Program in South Dakota. In that capacity, I am 

submitting an amendment to South Dakota's State Implementation Plan to address the 

requirements for Regional Haze under Section 308 of 40 CFR Part 51, Requirements for 

Preparation, Adoption, and Submittal of Implementation Plans, Subpart P - Protection of 

Visibility. 

The enclosed package consists of DENR's evaluation of South Dakota's two Class I areas (e.g., 

Badlands and Wind Cave National Parks). The evaluation established the baseline, natural 

conditions, and uniform rate of improvement; an analysis of the IMPROVE monitoring data at 

each Class I area; source apportionment; a Best Available Retrofit Technology (BART) analysis; 

reasonable progress; long term strategy; monitoring strategy, our conunitment to work with EPA, 

federal land managers, other states, and the public on meeting natural conditions by 2064; and a 

commitment to conduct periodic reviews. 

In January 2010, DENR provided the federal land managers, EPA, neighboring states, and others 

a draft copy of South Dakota's Regional Haze Program. After considering all of the preliminary 

comments, DENR held a public hearing in front of the Board of Minerals and Environment on 

September 15, 2010, to take testimony and more comments on the proposed Regional Haze 

Program and adopt Administrative Rules of South Dakota (ARSD) Chapter 74:36:21 - Regional 

Haze Program, which included the BART requirements for Otter Tail Power Company. The 

Board of Minerals and Environment unanimously approved the mles. 
The rule changes were approved by the Legislative Interim Rules Committee on November 17, 

2010, and became effective on December 7, 2010. I have enclosed a fmal copy of the 

Administrative Rules of South Dakota (ARSD) Chapter 74:36:21 which should be attached to 

EPA's current version of the ARSD 74:36 and the supporting documentation to demonstrate the 

mles were revised in accordance with South Dakota's procedures for adopting mles. The 

finalized mles are available on South Dakota's webpage at: 

http://legis.state.sd.us/mles/DisplavRule.aspx?Rule=74:36:21. 

As described in 40 CFR Part 51, Subpart L - Legal Authority, the South Dakota's State 

Implementation Plan must show that it has the legal authority to carry out the plan. I have 

included the Attomey General's letter to you indicating DENR has the authority to implement 

the Regional Haze Program. 

DENR has and will continue to have adequate resources to implement and enforce South 

Dakota's Air Quality Program, including regional haze. I want to thank you in advance for your 

favorable consideration of these requests. Please contact Rick Boddicker at (605) 773-3151, if 

you have any questions. 

Since; 

Steven M. Pimer, P.E. 

Secretary 

Enclosures 

cc w/o enclosures: Nathan Sanderson, Policy Advisor, Govemor Daugaard's Office 

Roxanne Giedd, Deputy Attomey General 

Dick Sweetman, Chairman, Board of Minerals and Environment