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Ignatia Wrexham-Bonsu

Underground Utility Locate Technician
Fresno, CA, United States

Professional Summary

Underground Utility Locate Technician with 7+ years locating gas, electric, telecom, water and sewer lines for 811 tickets across the Central Valley. Expert with Radiodetection RD8100, Vivax-Metrotech vLoc3 and ground penetrating radar on congested urban, agricultural and rural right-of-way sites. Maintained zero at-fault damages for 4 straight years while clearing 20+ tickets per day. Trains and mentors new locators on APWA marking standards, safety and ticket documentation.

Employment History

Senior Utility Locate Technician
USIC · Fresno, CA
Jan, 2021 · Present
Locate and mark gas, electric, telecom, water and sewer facilities on 20–28 USA North 811 tickets per day across Fresno and Kings counties Maintained zero at-fault excavation damages for 4 consecutive years across 21,000+ completed tickets Resolve 95% of emergency tickets within 2 hours, supporting PG&E, AT&T and municipal water crews on after-hours call-outs Trained and certified 11 new locators on RD8100/vLoc3 operation, APWA color code and ticket documentation; 10 passed NULCA on first attempt Used GPR and sonde tracing to map 3.2 miles of untoned PVC and abandoned lines, cutting unlocatable-facility tickets by 38% Audit peer ticket photos and GIS notes weekly, raising district documentation compliance from 86% to 99%
Utility Locate Technician
Pacific Locating Services · Visalia, CA
Jun, 2018 · Dec, 2020
Completed 15–22 811 locate tickets per day for gas, fiber, CATV and irrigation facilities across Tulare County Achieved 99.6% on-time ticket completion rate across 3 years and 11,500+ tickets Updated facility records in ArcGIS Field Maps, correcting 400+ mapping discrepancies reported to utility owners Coordinated with excavators on large-project meet tickets for 6 subdivision and highway widening projects Set up compliant traffic control on 300+ roadway locates with zero vehicle incidents
Field Service Helper
Central Valley Underground · Madera, CA
May, 2016 · May, 2018
Assisted crews with potholing, vacuum excavation and daylighting of utilities on 120+ job sites Installed and tested tracer wire on 8 miles of new PVC water and irrigation main Supported confined space entries as attendant, maintaining gas monitor logs with 100% compliance Flagged traffic and maintained equipment, reducing truck downtime 15% through daily inspections

Education

A.S. Construction Technology
Fresno City College · Fresno, CA
Aug, 2014 · May, 2016
Coursework in surveying, blueprint reading, utility systems and construction safety; capstone mapping campus underground utilities with GPR.

Skills

Electromagnetic Locating (RD8100, vLoc3)
Ground Penetrating Radar (GPR)
811 / DigAlert Ticket Management
APWA Color Code Marking
GIS / ArcGIS Field Maps
Sonde & Tracer Wire Locating
Damage Prevention
OSHA Confined Space
Traffic Control & Flagging

Courses

NULCA Professional Locator Certification
NULCA
OSHA 30-Hour Construction
OSHA Training Institute
California Flagger / Traffic Control Certification
ATSSA
CPR / First Aid / AED
American Red Cross
Class C Driver License — Clean Record
California DMV