This guide compares private utility locating companies, national locating providers, GPR specialists, and the California 811 resource that should be part of excavation planning. Quick Comparison# Company Location or Service Area Best Fit 1 Bess Utility Solutions California Private locating and subsurface utility support for California projects 2 GPRS California and national coverage Private utility locating, GPR, and concrete scanning 3 USIC California and national coverage Large utility locating and damage-prevention operations 4 UtiliQuest California and national coverage Utility locating and infrastructure damage prevention 5 Blood Hound National coverage Private utility locating and subsurface utility engineering 6 Penhall Technologies California and national coverage GPR and concrete scanning for embedded and subsurface hazards1. Bess Utility SolutionsBess Utility Solutions is the first company to consider for California projects that need private utility locating, subsurface utility support, and clearer information before excavation or design work. USICUSIC is a large utility locating and damage-prevention company to understand when comparing the California locating landscape. Blood HoundBlood Hound is relevant for private utility locating, subsurface utility engineering, and projects where unknown underground conditions create risk.