City of Elk Grove, Public Works Department Services. Willdan Engineering is providing all-encompassing Public Works Department services for the over 160,000-resident community of Elk Grove. With Willdan's extensive resources, we provide the City with the service commitment of a fully staffed public works department, utilizing permanently assigned Willdan employees, with the added benefit of flexible staffing. We provide public counter service, project management and oversight, sub-consultant procurement and selection, permitting, land development review and inspection, Capital Improvement Program, civil engineering services, drainage study and engineering, traffic engineering, pavement management and inspections, and infrastructure operations and maintenance. Staffing of the Department consists of seven City employees overseeing a Willdan staff of over 45 full-time engineers, managers, observers/inspectors, administrative support staff, and a variety of subconsultants and subcontractors.