1 Site Description Report Sibley Plant 33200 E. Johnson Road Sibley , MO March 3 , 2009 1.0 Background and Objectives The Environmental Protection Agency (EPA) is in the process of developing 316(b) cooling water intake structure requirements that reflect th e best technology available (BTA) for minimizing adverse environmental impact for all existing power plants and manufacturing facilities. As part of this process, EPA staff is visiting electric generators and manufacturers to better understand the cooling water intake structure (CWI S) technologies in use at facilities, including the site

specific characteristics of each facility and how these affect the selection and performance of CWI S technologies. EPA is also visiting facilities to better understand coo ling water use and specific issues or technologies that can affect 316(b) compliance. As part of its site visit to the Lake Road Plant, EPA also collected information on KCP & L Greater Missouri Operations Company ’s ( KCP&L GMO ) Sibley

Plant. 2.0 Facility Descr iption The Sibley Plant is the largest generation facility owned and operated b y KCP&L GMO which operates under the KCP&L brand name
. See Section 10. 0. Sibley is located on the Missouri River in Jackson County approximately 20 miles east of Kansas City
. It occupies approximately 100 acres next to the town of Sibley , Mo and employ s approximately 135 people
. Cooling and process water withdrawals from and wastewater discharges to the Missouri River are regulated under NPDES permit number MO0004871 which e xpired on November 2, 2005
. Sibley submitted its NPDES permit application in a timely manner and is awaiting renewal of its permit by the state. 3.0 Electricity Generation and Transmission The Sibley

Plant has three coal

- fired boilers with a total generatin g capacity of about 466 MW. Units 1 and 2 each have a generating capacity of 5 1 MW while Unit 3 has a generating capacity of approximately 364 MW. The fuel source for the vast majority of power generation at Sibley is a combination (75%/25%) of low/high BTU , low sulfur coal from the Powder River Basin in Wyoming and Colorado. In addition, a ccording to a June 2004 press release , Sibley also receives waste tires that have been shredded by independent companies to be used as a fuel source at this plant
. Since 1997, Sibley has burned2 nearl y 138 million pounds of scrap tires
. According to the press release, a maximum of 5% of Sibley’s power generation is from this alternative fuel source. 4.0 Cooling Water System and Intake Structure Sibley has two CWI S s that provide once

- through cooling water for its generating unit s: one for Units 1/2 and one for Unit 3
. The CWI S s are located in a deep channel on the outer bend of the Missouri River and fi tted with grizzlies (4 x 4s). The combined CWI S for Units 1 and 2 has three standard (i.e., coarse mesh 3/8”) traveling screens. In addition, four circulating water pumps provide a design intake flow per screen of 22,500 gpm (total of 97.2 mgd) of cooling water to the generating unit s . The through

- screen velocit y is 1 .4 feet per second ( fps )
. The CWI S for Unit 3 has four 1⁄4” dual flow screens. Four circulating water pumps provide a design intake flow of 45,000gpm of cooling water per screen to the generating unit (total of 259.2 mgd)
. The through screen velocit y i s 1.4 fps. Facilit y representatives noted they are not aware of any difference in O&M associated with the two different screen ty pes at this facility
. Sibley inspects its traveling screens annuall y. It also cleans and rebuilds one screen annuall y duri ng its routine maintenance outage period . Approximately every 2 years (during a regularl y scheduled outage), Sibley will clean the silt out of the CWI S. 5.0 Impingement and Entrainment Information KCP&L GMO representatives did not provide any information on impingement, entrainment or source water body characterization for this site. 6.0 Cooling Tower Feasibility KCP&L GMO representatives indicated that Sibley has available land for cooling tower placement, but that it is located about 1⁄2 mile from the sit e. 7.0 Debris Handling As with other facilities located on the Missouri River, debris can be significant at Sibley
. 8.0 Repowering/Future Uses Sibley has no short term plans for re

- powering or upgrading.3

9.0 Cooling Ponds Sibley does not have an y cooli ng ponds. 10.0 Ownership S ibley is owned b y KCP&L GMO a subsidiary of Great Plains Energy
. Kansas City Power and Light Company is also a subsidiary

of Great Plains Energy . Both subsidiaries operate under the KCP&L brand name. 11.0 316(a) KCP&L GMO representati ves did not provide any information related to 316(a) for this site
. 12.0 Ash Handling B ottom ash (slag) generated at Sibley is beneficially

used . Fl y ash that is not beneficiall y used is sluiced with river water to a 15 acre ash pond. Sibley cleans out i ts ash pond every few ye ars and transfers the waste material to an on - site landfill. 13.0 Air Emissions Controls Sibley was recently

equipped with a new SNCR and SCR. Facility representatives noted that the some of the new equipment is located in the forme r employee parking lot.