What was found
CLIMBING OUT OF RNO AT 300 FT AGL BLEED 1 AND 2 OVERPRESSURE EICAS MSG RECEIVED. FOLLOWED QRH PROCEDURE BOTH OVERPRESSURE MSG CAME BACK. RETURNED TO RNO. MAX PRESSURE WAS 100 PSI.DECLARED EMERGENCY FLT CONT. -C/A-CMC FAULT CODE 36146225AM1. PERFORMED ENGINE BLEED SYS OPS CHECK IAW EMB 175 AMM 36-11-00-710-801-A. OPS CHECKS GOOD. NO FURTHER ACTION REQUIRED AMM 36-11-00-710-801-A. OPS CHECKS GOOD. NO FURTHER ACTION REQUIRED