S56 CTLR QUESTIONS TWR RELEASE OF ACFT INTO HIS OR HER AIRSPACE WITHOUT COORD.

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SLC LNDG S RWY 16R; RWY 16L; RWY 17. SLC TWR COORD WITH DEP SECTOR FOR AN OPPOSITE DIRECTION DEP. NO COORD WITH THE SECTOR THAT HAD TFC AND AIRSPACE. THE DEPARTING TFC WAS AN ACR FLT. VISUAL SEPARATION WAS APPLIED AS DEP TURNED W THROUGH ARR PATH. RESOLUTION: SLC TWR SHOULD HAVE EFFECTED COORD WITH TWR AND OBTAINED A DEP RELEASE FROM FINAL; TO ENSURE SEPARATION WITH ARRIVING TFC. HAD THE DEP SECTOR NOT VERBALIZED A PENDING OPPOSITE DIRECTION DEP RELEASE; HAD HE NOT LEFT HIS CTL POS TO LOOK AT ACFT SIT DISPLAY; HAD HE NOT GIVEN INDICATION THAT THE DEP WAS ROLLING; WE MAY NOT HAVE BEEN ABLE TO APPLY VISUAL SEPARATION IN A TIMELY MANNER. FACTORS AFFECTING QUALITY OF PERFORMANCE; PERCEPTION; JUDGEMENTS: PERSONALLY; AS THE FINAL SECTOR; ANXIETY FROM RECENT EVENT WITH ACFT ON FEB/SAT/04. ALSO; CONTINUED QUESTIONABLE APPLICATIONS OF WAKE TURB SEPARATION AND STANDARD SEPARATION APPLICATIONS BTWN SUCCESSIVE DEPS OFF SLC. THERE SEEMS TO BE A LACK OF KNOWLEDGE OF ACFT PERFORMANCE; WX CONDITIONS THAT MAY ALTER APPLICATION OF SOME PROCS AND DIRECTIVES. LACK OF ACCOUNTABILITY FOR SUCH FAILURES. SUPPLEMENTAL INFO FROM ACN 610827: ARPT WAS ON A S FLOW. AUTOMATIC RELEASES WERE GIVEN TO THE TWR FOR RWY 16L; RWY 16R AND RWY 17 DEPS. I WAS WORKING THE DEP SECTOR. LCL CTLR CALLED AND STATED 'ACFT IS LOOKING FOR A RWY 34R DEP; CAN YOU APPROVE IT?' I STATED 'I CAN APPROVE IT.' I EMPHASIZED THE WORD 'I' IN ORDER TO CLUE THE LCL CTLR THAT HE WOULD NEED TO GET APPROVAL FROM BOTH ARR CTLRS. I WENT OVER TO THE 2 ARR CTLRS AND LET THEM KNOW WHAT LCL CTLR HAD REQUESTED APPROVAL (APREQ) WITH ME. I ASSUMED THAT LCL DID NOT HAVE AUTOMATIC RELEASES FOR AN OPPOSITE DIRECTION DEP. LCL CTLR LAUNCHED THE HVY ACR FLT WITH A CRJ; FLT X; ON ABOUT A 7 MI FINAL FOR RWY 17. THE ACFT Y MADE A L TURN OFF THE DEP END OF THE RWY ACROSS THE FINAL OF RWY 16R. LCL CTLR XFERRED COMS TO ME AND I STOPPED THE ACFT X AT 8000 FT (HE WAS ORIGINALLY CLBING TO 10000 FT). THERE WAS ANOTHER ACFT AT 11000 FT ABEAM THE ARPT AND THE FINAL CTLR HAD CTL FOR DSCNT. I THEN CALLED THE FINAL CTLR AND LET HIM KNOW ABOUT THE ACFT X AND HIS ALT. AS FAR AS I KNOW; SEPARATION WAS NEVER LOST.