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1st Call Utility Locating is a Northern California private utility locating company specializing in identifying and documenting underground infrastructure before excavation, drilling, coring, construction, and other site work begins.
Core Dynamics GPR Inc. is a California-based subsurface investigation and damage-prevention company specializing in ground-penetrating radar (GPR), private utility locating, concrete scanning, and GPS mapping. The company works with contractors, property owners, engineers, and construction teams that need to identify hidden utilities or structural elements before excavation, drilling, coring, saw cutting, or other potentially destructive work begins.
Quark Scan Inc. is a New Jersey-based subsurface investigation company specializing in underground utility locating, concrete scanning, ground-penetrating radar (GPR), underground storage tank locating, and geophysical surveys. The company primarily supports construction, engineering, environmental, and commercial projects where accurate information about buried or embedded infrastructure is needed before excavation, drilling, coring, saw cutting, or other site work begins.
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Los Angeles, Sacramento, San Diego, Riverside, San Bernardino, Concord, Danville, Lafayette, Brentwood, Novato, Aptos
Orlando, West Palm Beach, Miami, Tampa
Phoenix
Chicago
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