▁as ist encias ▁( mission ▁assistance ▁out posts ). ▁ ▁Sh el ved ▁plans ▁for ▁additional ▁mission ▁ch ains ▁▁ ▁Work ▁on ▁the ▁coast al ▁mission ▁chain ▁was ▁concluded ▁in ▁ 1 8 2 3 , ▁completed ▁after ▁Ser ra ' s ▁death ▁in ▁ 1 7 8 4 . ▁Pl ans ▁to ▁build ▁a ▁twenty - second ▁mission ▁in ▁Santa ▁Rosa ▁in ▁ 1 8 2 7 ▁were ▁can ce led . ▁ ▁The ▁Rev . ▁Pedro ▁Est é van ▁T á pis ▁proposed ▁establish ing ▁a ▁mission ▁on ▁one ▁of ▁the ▁Channel ▁Islands ▁in ▁the ▁Pacific ▁Ocean ▁off ▁San ▁Pedro ▁Har bor ▁in ▁ 1 7 8 4 , ▁with ▁either ▁Santa ▁Catal ina ▁or ▁Santa ▁Cruz ▁( known ▁as ▁Lim ú ▁to ▁the ▁T ong va ▁residents ) ▁being ▁the ▁most ▁likely ▁locations , ▁the ▁reasoning ▁being ▁that ▁an ▁off sh ore ▁mission ▁might ▁have ▁attract ed ▁potential ▁people ▁to ▁convert ▁who ▁were ▁not ▁living ▁on ▁the ▁main land , ▁and ▁could ▁have ▁been ▁an ▁effective ▁measure ▁to ▁restrict ▁sm ugg ling ▁operations . ▁Governor ▁José ▁Jo aqu ín ▁de ▁Arr ill aga ▁approved ▁the ▁plan ▁the ▁following ▁year , ▁however ▁an ▁out break ▁of ▁sar amp ión ▁( me as les ) ▁killing ▁some ▁ 2 0 0 ▁T ong va ▁people ▁couple d ▁with ▁a ▁scarc ity ▁of ▁land ▁for ▁agricult ure ▁and ▁pot able ▁water ▁left ▁the ▁success ▁of ▁such ▁a ▁vent ure ▁in ▁doubt , ▁so ▁no ▁effort ▁to ▁found ▁an ▁island ▁mission ▁was ▁ever ▁made