▁and ▁Em bra er ▁E - 1 7 5 s . ▁ ▁On ▁June ▁ 2 6 , ▁ 2 0 1 9 , ▁Cont our ▁Airlines ▁announced ▁fl ights ▁to ▁Las ▁Veg as ▁which ▁began ▁October ▁ 1 7 th , ▁ 2 0 1 9 ▁with ▁Em bra er ▁ER J - 1 3 5 s . ▁ ▁On ▁September ▁ 4 , ▁ 2 0 1 9 , ▁Al aska ▁Airlines ▁announced ▁daily ▁fl ights ▁with ▁the ▁ER J - 1 7 5 ▁to ▁Port land , ▁Oregon ▁( start ing ▁on ▁June ▁ 1 8 th , ▁ 2 0 2 0 ), ▁and ▁San ▁Diego ▁which ▁began ▁January ▁ 7 th , ▁ 2 0 2 0 . ▁ ▁Environment al ▁cont am ination ▁In ▁ 2 0 1 5 , ▁the ▁air port ▁was ▁sus pected ▁as ▁a ▁possible ▁source ▁of ▁tr ich lor o eth yl ene ▁or ▁T CE , ▁which ▁was ▁found ▁in ▁nearby ▁water ▁well s . ▁However , ▁an ▁investigation ▁ordered ▁by ▁the ▁Central ▁Coast ▁Regional ▁Water ▁Qu ality ▁Control ▁Board ▁and ▁conducted ▁by ▁a ▁third - party ▁engineering ▁firm ▁found ▁that ▁the ▁air port ▁was ▁not ▁the ▁source ▁of ▁cont am ination . ▁Water ▁Board ▁staff ▁o vers aw ▁the ▁county ' s ▁field ▁investigation ▁activities . ▁An ▁estimated ▁ 4 8 ▁residents ▁had ▁already ▁file d ▁claims ▁against ▁the ▁county ▁for ▁neg lig ence , ▁even ▁though ▁the ▁investigation ▁concluded ▁that ▁the ▁San ▁Luis ▁Ob is po ▁Regional ▁Airport ▁is