Surveying and Layout Services

The contract encompasses comprehensive surveying and layout services for infrastructure projects under Caltrans District 4, specifically focused on Sonoma. The work includes performing topographic and as-built surveys to document existing conditions and completed construction elements, staking out precise locations for traffic beacons and crosswalks, and verifying site grades to ensure full compliance with ADA accessibility standards. All surveying tasks will be executed using advanced precision equipment such as GPS receivers and robotic total stations to guarantee high accuracy and reliability in data collection and layout execution. The services are classified under NAICS code 541370, indicating they fall within the specialized engineering surveying and mapping services category, and are structured as a subcontract under a larger project initiated on July 7, 2026. The performance location is centered in Sonoma, with no specified city or state boundaries beyond this, and all deliverables must meet Caltrans standards for public infrastructure safety and accessibility.