J.M. Stuart Station

Construction of J.M. Stuart commenced in 1966 with Units 2, 1, and 3 beginning commercial generation in 1970, 1971, and 1972 respectively.{{cite web|url=https://newspaperarchive.com/fairborn-daily-herald-oct-14-1970-p-16/|title=New Stuart Generating Station to Open|newspaper=The Fairborn Daily Herald|date=October 14, 1970|page=16|via=newspaperarchive.com|access-date=April 4, 2018}}{{cite web|url=https://www.epa.gov/sites/production/files/2016-01/documents/dpl316ademonpart1.pdf|title=J.M. Stuart Station 316(a) Demonstration Final|last=Huff|first=Bernard L.|publisher=WAPORA, Inc.|website=EPA.gov|date=September 28, 1976|access-date=December 10, 2017|page=1}} The plant became fully operational with the completion of Unit 4 in 1974. The total cost of building Stuart was $390 million.{{cite news|url=https://newspaperarchive.com/fairborn-daily-herald-jun-12-1974-p-11/|title=Operation is Closer|newspaper=The Fairborn Daily Herald|date=June 12, 1974|page=12|via=newspaperarchive.com|access-date=April 19, 2018}} The plant was named after James M. Stuart, a former chairman of Dayton Power & Light (DP&L). Although the plant's cooling source was the Ohio River, its discharge egressed into Little Three Mile Creek. In the 1980s, Stuart was an early adopter of the prompt gamma neutron activation analysis (PGNAA), a coal analyzer, that increased on-line reliability for the plant.{{cite web|url=http://www.sabiainc.com/pdf/Using%20an%20On-line%20Nuclear%20Analyzer%20to%20Optimize%20the%20Operation%20of%20a%20Coal%20Burning%20Power%20Plant.pdf|title=Using an On-line Nuclear Analyzer to Optimize the Operation of a Coal Burning Power Plant|last1=Foster|first1=Steve|last2=Linsberg|first2=Mark|publisher=SABIA, Inc.|website=sabiainc.com|date=2005|access-date=December 9, 2017|archive-date=August 8, 2017|archive-url=https://web.archive.org/web/20170808125206/http://www.sabiainc.com/pdf/Using%20an%20On-line%20Nuclear%20Analyzer%20to%20Optimize%20the%20Operation%20of%20a%20Coal%20Burning%20Power%20Plant.pdf|url-status=dead}} In August 2014, Duke Energy sold its stake in the coal units to Dynegy.{{cite web|url=http://www.maysville-online.com/news/local/duke-energy-selling-interest-in-stuart-and-killen-stations/article_2c2c5d2f-a0d7-5d67-91e2-38040e50a6de.html|title=Duke Energy selling interest in Stuart and Killen Stations|last=Mitchell|first=Wendy|newspaper=The Ledger Independent|date=August 22, 2014|access-date=February 26, 2018|archive-date=February 27, 2018|archive-url=https://web.archive.org/web/20180227094310/http://www.maysville-online.com/news/local/duke-energy-selling-interest-in-stuart-and-killen-stations/article_2c2c5d2f-a0d7-5d67-91e2-38040e50a6de.html|url-status=dead}} American Electric Power (AEP) held a 26% stake in the coal units through a subsidiary.{{cite web |url=https://www.aep.com/about/MajorBusinesses/GenerationResources/ |title=AEP Generation Resources |access-date=October 14, 2017 |archive-url=https://web.archive.org/web/20171014233652/https://www.aep.com/about/MajorBusinesses/GenerationResources/ |archive-date=October 14, 2017 |url-status=bot: unknown }} Operations at Stuart were transferred from DP&L to AES Ohio Generation in October 2017.{{cite news|url=https://www.daytondailynews.com/business/300-dpl-employees-transfered-aes-ohio-generation/iEQzkB7qECg5DH2lDpUdpM/|title=300 DPL employees to be {{sic|transf|ered|nolink=y}} to AES Ohio Generation|last=Gnau|first=Thomas|newspaper=Dayton Daily News|date=September 22, 2017|access-date=April 19, 2018|archive-date=April 20, 2018|archive-url=https://web.archive.org/web/20180420073949/https://www.daytondailynews.com/business/300-dpl-employees-transfered-aes-ohio-generation/iEQzkB7qECg5DH2lDpUdpM/|url-status=dead}}

DP&L announced plans in March 2017 to close J.M. Stuart along with its sister plant Killen Station due to economic and environmental challenges in an agreement with the Sierra Club and several unnamed parties.{{cite news|url=http://www.maysville-online.com/news/local/dp-l-determined-to-close-j-m-stuart-and-killen/article_99f244ef-b832-5477-aa8b-831b8fe796be.html|title=DP&L determined to close J.M. Stuart and Killen power plants|last=Mitchell|first=Wendy|newspaper=The Ledger Independent|date=March 20, 2017|access-date=December 10, 2017|archive-date=December 11, 2017|archive-url=https://web.archive.org/web/20171211105050/http://www.maysville-online.com/news/local/dp-l-determined-to-close-j-m-stuart-and-killen/article_99f244ef-b832-5477-aa8b-831b8fe796be.html|url-status=dead}} Electricity generation at Stuart ceased on May 24, 2018.{{cite news|url=https://www.peoplesdefender.com/2018/05/24/j-m-stuart-plant-ceases-operations/|title=J.M. Stuart Plant ceases operations|last=Beech|first=Patricia|newspaper=The People's Defender|date=May 24, 2018|access-date=May 25, 2018}} In December 2019, DP&L sold the site to Kingfisher Development for remediation and redevelopment.{{cite news|url=https://www.daytondailynews.com/business/dpl-prepares-sell-two-adams-county-power-plants/zeCwTSouPJUH5u0XiUl0TK/|title=DPL prepares to sell two Adams County power plants|last=Gnau|first=Thomas|newspaper=Dayton Daily News|date=December 16, 2019|access-date=December 18, 2019}}

During construction of Unit 4, a cooling tower was commissioned by Cincinnati Gas and Electric (CG&E) (a forerunner of Duke Energy) in order to meet pollution control mandates set by the State of Ohio.{{cite magazine|title=Pollution: Take heart–we're actually gaining on the stuff|last=Bode|first=Patricia|magazine=Cincinnati Magazine|date=September 1972|page=65|url=https://books.google.com/books?id=DusCAAAAMBAJ&pg=PA65|access-date=April 19, 2018}} Its four smokestacks were upgraded with electrostatic precipitators to prevent fly ash from being released into the atmosphere. Stuart was the test site for the Low-{{NOx}} Cell Burner (LNCB) designed by Babcock & Wilcox. The LNCB project utilized Unit 4 over a duration of 53 months from 1990 to 1994. The test confirmed that a LNCB can reduce nitrogen oxide ({{NOx}}) emissions by more than 50%, but the carbon monoxide (CO) emissions were inconclusive.{{cite report|url=https://digital.library.unt.edu/ark:/67531/metadc623309/m2/1/high_res_d/167201.pdf|title=Full-Scale Demonstration of Low-NO_x Cell Burner Retrofit|publisher=United States Department of Energy (DOE)|date=July 1994|doi=10.2172/167201|access-date=October 27, 2017|last1=Eckhart|first1=C.F.|last2=Kitto|first2=J.B.|last3=Kleisley|first3=R.J.}} Each unit at Stuart was retrofitted with selective catalytic reduction (SCR) systems between 2003 and 2004 by Black & Veatch. The SCRs were installed to comply with the Clean Air Act's 1990 amendments and Ohio's {{NOx}} State Implementation Plan (SIP).{{cite news|url=http://www.power-eng.com/articles/2003/01/black-veatch-completing-scr-project-for-dayton-power-light.html|title=Black & Veatch completing SCR project for Dayton Power & Light|publisher=Power Engineering|date=January 31, 2003|access-date=December 9, 2017}} Flue-gas desulfurization (FGD) equipment, designed by Black & Veatch with assistance from the Chiyoda Corporation was installed at J.M. Stuart in 2008. The FGD equipment reduced 97% of the plant's sulfur dioxide ({{SO2}}) emissions.{{cite news|url=http://www.power-eng.com/articles/print/volume-112/issue-10/features/go-take-a-bath.html|title=Go Take a Bath|last=Blankinship|first=Steve|publisher=Power Engineering|date=October 1, 2008|access-date=January 15, 2018}} In order to support the FGD process, a {{convert|900|ft|m|0|abbr=on}} smokestack was constructed.{{cite news|url=http://www.maysville-online.com/news/dp-l-constructs-two-plants-to-facilitate-construction-of-station/article_80a96b4f-d6c0-5bcf-94ad-553c928dcd7b.html|archive-url=https://web.archive.org/web/20180116081318/http://www.maysville-online.com/news/dp-l-constructs-two-plants-to-facilitate-construction-of-station/article_80a96b4f-d6c0-5bcf-94ad-553c928dcd7b.html|url-status=dead|archive-date=January 16, 2018|title=DP&L constructs two plants to facilitate construction of station's new stack|last=Mitchell|first=Wendy|newspaper=The Ledger Independent|date=August 29, 2005|access-date=January 15, 2018}}

An electrical arc flash killed two employees in October 1994.{{cite news|url=https://scholarworks.bgsu.edu/cgi/viewcontent.cgi?article=6759&context=bg-news|title=One killed, three injured in power plant accident|page=3|newspaper=The BG News|date=November 1, 1994|access-date=October 14, 2017}}{{cite news|url=https://infoweb.newsbank.com/apps/news/document-view?p=WORLDNEWS&t=stp%3ANewspaper%21Newspaper/pubname%3ACNPB%7CCPDB%7C122AFBBA107AC9E4%7CCLDB%7CDDNB%21Multiple%2520Sources%2520%285%29&sort=YMD_date%3AD&page=3&fld-base-0=alltext&maxresults=20&val-base-0=J.M.%20Stuart&docref=news/0F51AE0C1667EDB6|title=DP&L Agrees to OSHA Fine, Safety Improvements|newspaper=Dayton Daily News|date=May 4, 1995|via=newsbank.com|access-date=January 14, 2018|page=7B}} DP&L was levied a $295,000 fine by the Occupational Safety and Health Administration (OSHA) for hazardous safety practices.

A worker was killed in July 2006 when a pile of fly ash slipped back into the pond burying the equipment and the worker.{{cite news|url=http://www.maysville-online.com/news/bracken-county-man-killed-in-ash-pond-slide-at-dp/article_12612753-294d-536b-b0b0-7454ef814eae.html|title=Bracken County man killed in ash pond slide at DP&L|last=Mitchell|first=Wendy|newspaper=The Ledger Independent|date=July 25, 2006|access-date=November 3, 2017|archive-date=November 7, 2017|archive-url=https://web.archive.org/web/20171107003618/http://www.maysville-online.com/news/bracken-county-man-killed-in-ash-pond-slide-at-dp/article_12612753-294d-536b-b0b0-7454ef814eae.html|url-status=dead}}

On January 10, 2017, an explosion occurred at Unit 1 injuring six people. The plant had to be temporarily shut down while DP&L investigated and assessed the explosion.{{cite news|url=http://www.wlwt.com/article/explosion-with-injuries-reported-adams-county-plant/8582576|title=6 injured in explosion at Adams County plant; plant closed for 'thorough investigation'|last=Griffin|first=Dan|publisher=WLWT-TV|date=January 10, 2017|access-date=February 20, 2017}}{{cite report|url=http://d18rn0p25nwr6d.cloudfront.net/CIK-0000874761/fbca04bd-b288-4c0c-88bc-55163bfe9fd8.pdf|title=The AES Corporation Fiscal Year 2017 Form 10-K|publisher=AES Corporation|date=February 27, 2018|access-date=March 26, 2018|page=17}} The plant began a restart the following month.{{cite news|url=http://www.maysville-online.com/news/local/restart-testing-beginning-at-damaged-power-plant/article_7d0e00ea-3642-54cd-bbf1-7c6d16b55234.html|title=Restart testing beginning at damaged power plant|last=Mitchell|first=Wendy|newspaper=The Ledger Independent|date=February 14, 2017|access-date=February 20, 2017|archive-date=October 14, 2017|archive-url=https://web.archive.org/web/20171014233727/http://www.maysville-online.com/news/local/restart-testing-beginning-at-damaged-power-plant/article_7d0e00ea-3642-54cd-bbf1-7c6d16b55234.html|url-status=dead}} DP&L never restarted commercial generation of Unit 1 after the incident.

The lands owned by DP&L for J.M. Stuart contain the Greenlee Tract. This tract was used by Native Americans in the past over an 8,000 year period and later settlers in the 19th Century.{{cite web|url=https://www.dpandl.com/images/uploads/archaeological-discoveries-southern-ohio_part1(1).pdf|title=People & Place: Archaeological Discoveries in Southern Ohio – Part 1|publisher=Gray & Pape|access-date=November 3, 2017|archive-date=November 7, 2017|archive-url=https://web.archive.org/web/20171107031653/https://www.dpandl.com/images/uploads/archaeological-discoveries-southern-ohio_part1(1).pdf|url-status=dead}} As DP&L looked to expand its fly ash disposal areas in the 1990s, they funded a study to determine the archaeology resources of the Greenlee Tract.{{cite book|title=A Persistent Place: A Landscape Approach to the Prehistoric Archaeology of the Greenlee Tract in Southern Ohio|last=Purtill|first=Matthew|pages=4–5|publisher=Lulu.com|year=2012|isbn=978-1105873232|url=https://books.google.com/books?id=orzOAwAAQBAJ}} Archaeology was conducted on the tract periodically from 1991 to 2011. Over 200,000 artifacts were collected revealing human activity from the Pre-Columbian era and from the early 19th Century.{{cite web|url=https://www.dpandl.com/images/uploads/archaeological-discoveries-southern-ohio_part2.pdf|title=People & Place: Archaeological Discoveries in Southern Ohio – Part 2|publisher=Gray & Pepe|access-date=November 24, 2017|archive-date=December 1, 2017|archive-url=https://web.archive.org/web/20171201044611/https://www.dpandl.com/images/uploads/archaeological-discoveries-southern-ohio_part2.pdf|url-status=dead}}

The site of Stuart Station also included a small cemetery with the graves of five pioneer families of Adams County - Bradford, Ellis, Grimes, Kimble, and Moore. DP&L, under the direction of Chief Civil Engineer C. Russell Dole, researched the family genealogies, gained permission to remove the graves from the closest kin, and reburied the families at Manchester Cemetery in Manchester, Ohio. A dedication ceremony took place on October 30, 1963.{{Cite journal |last=Hancock |first=Glee |date=May 1963 |title=Grave Movers |journal=Forward: The Magazine of the Dayton Power and Light Company |pages=4–8}}

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• {{webarchive|url=https://web.archive.org/web/20171015044158/http://www.dplinc.com/about/corporate-overview/locations/stuart-station/|date=October 15, 2017|title=DPL Page for Stuart Station}}

Category:Energy infrastructure completed in 1970

Category:Energy infrastructure completed in 1971

Category:Energy infrastructure completed in 1972

Category:Energy infrastructure completed in 1974

Category:Buildings and structures in Adams County, Ohio

Category:Former coal-fired power stations in Ohio

Category:Archaeological sites in Ohio

Category:1970 establishments in Ohio

Category:2018 disestablishments in Ohio

Category:AES Corporation