Bechtel Jacobs was established as the environmental management contractor for DOE's Oak Ridge operations (including sites in Paducah, Kentucky and Piketon, Ohio, in addition to Oak Ridge) in 1997, when a $2.5 billion management and integration contract was issued to the company. In 2003 Bechtel Jacobs was awarded a new 5-year cost-plus-incentive-fee contract with an estimated value of $1.8 billion.[1] Bechtel Jacobs was replaced as the environmental remediation contractor for the Portsmouth Gaseous Diffusion Plant site in Piketon in 2005, after DOE awarded a new contract to LATA/Parallax Portsmouth, LLC, a joint small business venture of Los Alamos Technical Associates (LATA) and Parallax, Inc.[2][3] Bechtel Jacobs involvement at the Paducah Gaseous Diffusion Plant site ended in 2006 after DOE entered into a new contract with Paducah Remediation Services LLC (a partnership of Shaw Environmental and Infrastructure and Portage Environmental) for environmental management work there.[4] Bechtel Jacobs' role in Oak Ridge ended in 2011 after the environmental management contract for DOE properties there was awarded to UCOR, a partnership of URS Corporation and CH2M Hill.[5]