Assessment of Dam Safety Coal Combustion Surface Impoundments (Task 3): Northern States Power Company Minnesota, Sherburne County Power Station, Becker, Minnesota. (Final Report)

摘要

CHA was contracted by Lockheed Martin (a contractor to the United States Environmental Protection Agency) to perform site assessments of selected coal combustion surface impoundments (Project no. 0-381 Coal Combustion Surface Impoundments/Dam Safety Inspections). As part of this contract, CHA was assigned to perform a site assessment of Northern States Power Company-Minnesota's (d/b/a of Xcel Energy) Sherburne County Power Station, located in Becker, Minnesota. CHA made a site visit on September 16, 2009 to inventory coal combustion surface impoundments at the facility, to perform visual observations of the impoundment dikes, and to collect relevant information regarding the Bottom Ash Pond, Pond No. 1, Pond No. 2 and Pond No. 3 impoundments.