Its not on the chart but in AC 90-100:
"GPS RAIM Prediction[FONT=Times New Roman,Times New Roman]: As described in paragraph 8(a)(5) of AC 90-100, operators should verify RAIM availability prior to using GPS as the basis of operation on RNAV routes and procedures when any GPS satellites are out of service (e.g., "GPS PRN-14 OTS…"). However, a number of operators and GPS manufacturers have notified us that they do not have a means to verify RAIM along the route or procedure. The FAA is developing a RAIM prediction service for general use. Until this capability is operational, a RAIM prediction does not need to be done for any RNAV route conducted where ATC provides radar monitoring or RNAV departure/arrival procedure, which has an associated "RADAR REQUIRED" note charted. Operators may check RAIM availability for RNAV departure/arrival procedures at any given airport by checking approach RAIM for that location. This information is available upon request from a U.S. Flight Service Station (but not DUATS)."[/FONT]