SID ALT XING RESTRICTION NOT COMPLIED WITH.

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GND; CLRED TO PUSH; TAXI TO 8R VIA 20-P HOLD SHORT OF 8L; CONTACT TWR HOLDING SHORT OF 8L. PUSHED OFF GATE AT XA00 PST. HOLDING SHORT OF 8L; TWR ADVISES ACR X HOLDING SHORT OF 8R THEY WILL FOLLOW US. TWR TELLS US TO CROSS 8L INTO POS 8R AND HOLD. AS WE START TO CROSS 8L WE NOTICE THAT THE ACR X ACFT HAS PULLED UP TOO FAR ON S-23 TO CLR HIM. WE ADVISE THE TWR; TWR INSTRUCTS US TO TAXI DOWN 8L INTO POS AND HOLD. NOTE: WE ARE NOW USING A DIFFERENT RWY FOR DEP AND HOLDING IN POS; AWAITING DEPS OFF OF 8R. TWR ADVISES CLRED FOR TKOF; ALSO THE TWR GIVES A CLRNC TO MAINTAIN 3000. WE ASK THE TWR IF THE 3000 WAS FOR US AND TWR SAID NO; THAT'S FOR ANOTHER ACFT; MAINTAIN 14000. NOTE: TKOF IS NOW ON 8L; ORIGINAL CLRNC AND DEP PREDICATED ON 8R. MAINTAIN 14000. NEWLY ASSIGNED ALT; DELETES ALL OTHERS; FARS. UNRESTRICTED TO 14000 AT THIS TIME. TKOF COMPLETED AT XX17 PST; TWR ADVISES CONTACT DEP; R TURN TO 255 AS SOON AS PRACTICABLE. TURN STARTED AT 500 FT AGL. CONTACTED DEP; 125.5 DEP; RADAR CONTACT; PROCEED DIRECT TO POM. WE ARE NOW GOING DIRECT TO POM. WE ARE NOW TAKEN OFF OF THE SID (255 HDG; INTERCEPT THE POM 114R). THIS DIRECT CLRNC TO POM FURTHER REINFORCES OUR THOUGHTS OF UNRESTRICTED CLB TO 14000. AS USUAL; GREAT WORK BTWN TWR AND DEP TO EXPEDITE TFC; DUE TO THE DELAYS. DEP CTL; CONTACT LAX CENTER. AFTER CONTACT IS MADE WITH LAX CENTER; WE ARE ASKED BY THE CTLR IF WE HAD AN ALT RESTRICTION OVER POM? WE REPLIED; LAST ALT RECEIVED; MAINTAIN 14000; DIRECT POM. WE ASK IF THERE WAS A PROBLEM; AND CENTER CTLR STATED HE HAD NO PROBLEM; ONT DEP HAD INQUIRED ABOUT THE 8000 RESTRICTION OVER POM. LAX CENTER CTLR STATES; CLB TO 14000. THERE WERE NO CONFLICTS. DEP CLRED US DIRECT POM. HE IS WATCHING THE DEP GATE AND CLB. IF THE CTLR SAW A POTENTIAL ALT PROBLEM COMING UP; WHY DID HE NOT ADVISE AS WE WERE FAST APCHING THE 8000 FT LEVEL? A SUGGESTION THAT MAY HELP PREVENT ALT CONFLICTS IN THE FUTURE: WHEN CLRNC DELIVERY IS ISSUING A CLRNC; THE FIRST ALT RESTRICTION ON THE SID SHOULD BE THE ALT TO MAINTAIN; NOT AN ALT AFTER THE FIRST RESTRICTION. THIS INFO PASSED TO THE TWR.