20251110 05510400 1.0 TRUE Guardrail FIELD DATA COLLECTION OF ATTRIBUTES AND POSITION, CONSTRUCTION OF LINES BY SURVEY SECTION. DATA POST PROCESSED TO BASE RECEIVER, PRIMARILY GSM1, IN SOME CASES SKYB FIELD DATA COLLECTION: R. DOMINGUEZ, H. SALDANA, R. MACIAS, D.BOZARTH, M. WITTIG, C. HUBBELL. OFFICE PROCESSING AND PREPARATIONS: J. OWENS, C. PEER, A. SILVA.