CHATSWORTH -- Clean it up to the highest standards or face renewed pressure.

That was the message to The Boeing Co. on Wednesday by federal, state and local elected officials who called on the aerospace corporation to purge every inch of the land they own at the Santa Susana Field Laboratory of radioactive and chemical contamination.

Bolstered by an announcement last week that both the Department of Energy and NASA have committed to state cleanup standards for their portion of the 2,849-acre site, elected officials stood outside the entry gate of the property between Chatsworth and Simi Valley and pledged to pressure Boeing to clean up the former Rocketdyne lab.

Congressman Brad Sherman, D-Sherman Oaks, Assemblywoman Julia Brownley, D-Santa Monica, Ventura County Supervisor Linda Parks, and Los Angeles City Councilman Greig Smith all signed a letter addressed to Boeing Chairman and CEO W. James McNerney. State Sen. Fran Pavley, D-Agoura Hills, who was not there, also pledged support.