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The documents were requested under Metro’s public records policy and posted Monday to GovernmentAttic.org, a watchdog website.

A 2008 audit flagged other problems with the EGR contract, including provisions that locked Metro into a propriety product and made any changes necessary potentially expensive.

A similar situation on a sibling fare card contract with Cubic Transportation Systems, which stopped manufacturing cards compatible with the SmarTrip system, has left it facing a ticking clock as it exhausts its current supply of cards, which will last about a year.

Northrop Grumman IT contracts with local public and quasi-public agencies also have a checkered history. After winning the largest contract ever awarded by Virginia, state agencies were repeatedly rendered unable to perform basic functions as computer systems crashed for days.