Tutor Perini/O&G JV begins construction on LA Metro Purple Line Extension Phase II, US February 26, 2018 | North America Company News Tutor Perini/O&G JV has begun construction on Phase II of the Los Angeles (LA) Metro Purple Line Extension project under a USD1.37-billion construction contract secured in February 2017. ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password