Clayton L. Duvall
Guam,USA
Summary
Resourceful GIS Specialist and UXO Technician with over 4 years of experience, currently leading GIS operations at Environmental Chemical Corporation. Skilled in utility locating, ground penetrating radar (as a geophysics technician), and delivering high-quality GIS map packages in collaboration with cross-functional teams. Developed and delivered dozens of map packages supporting work plans, proposals, and final reports for projects across Guam, Tinian, Saipan, Wake Island, Kwajalein, and Okinawa. Proven track record in high-stress, hazardous environments, including unexploded ordnance recovery and safety-compliant field operations. Certified in project management (CAPM) and trained in HAZWOPER safety, leveraging technical expertise and leadership to ensure safe and successful project outcomes.
Overview
17
17
years of professional experience
1
1
Certification
Work History
UXO Tech II /GIS Specialist /Geophysics Technician
Environmental Chemical Corporation
11.2022 - Current
- Resourceful and driven GIS Specialist and Unexploded Ordnance Technician level II with over 4 years of field and mapping experience in hazardous site clearance, utility locating, and geospatial data management.
- Currently responsible for leading GIS operations within Environmental Chemical Corporation’s Munitions Response Division, managing all GIS work for projects in Guam and Tinian.
- Contributed to dozens of munitions response work plans and proposal mapping packages for sites on Guam, Saipan, Wake Island, Kwajalein, and Okinawa.
- Proficient in integrating ground penetrating radar (LMX-200) and sub-meter/survey-grade GPS/GIS tools to deliver precise subsurface utility locating and mapping solutions.
- Recognized for strong work ethic, teamwork, and consistent high-quality project delivery.
UXO Tech I /GIS Technician
Relyant Global
06.2021 - 11.2022
- Served as an Unexploded Ordnance Technician level I, performing subsurface clearance and safe recovery of handfuls of munitions, including naval gunship projectiles, hand grenades, and Japanese mortars on multiple sites across Guam.
- Conducted safe and thorough UXO operations, following rigorous safety protocols and collaborating closely with field teams to identify and neutralize explosive hazards.
- Recognized for reliability and adaptability, leading to additional responsibilities in GIS mapping and data collection.
- Under mentorship from senior GIS and field staff, developed foundational GIS skills using survey-grade equipment and mapping software, contributing to the creation of accurate geospatial deliverables.
- Gained a reputation for safety, teamwork, and eagerness to expand technical knowledge—laying the groundwork for transition to GIS and geophysics roles.
Maintenance Engineer
Alupang Cove Condominiums
07.2008 - 06.2021
- Maintained facility interior and exterior systems, ensuring safe and efficient operations for the 215 unit buildings tenants and staff.
- Conducted routine inspections and repairs to maximize longevity of building equipment and systems.
- Managed errands for equipment, supplies, and administrative tasks, including bank deposits and procurement.
- Collaborated with management to plan and execute necessary repairs and services to keep building systems running smoothly.
- Served as team leader for Sky Climber suspended scaffolding rig operations, ensuring safety and productivity during high-elevation tasks.
- Oversaw all resident manager responsibilities during absences and emergencies, maintaining tenant relations and operational continuity.
Education
Certified Associate in Project Management - Project Management
Project Management Institute
Newtown Square, PA05-2025
Google Project Management Certificate - Project Management
Google
Mountain View, CA09-2024
GIS Specialization Certificate - Geospatial Information Systems
University of California, Davis
Davis, CA05-2023
Unexploded Ordnance Technician Level I - Munitions Response
University of Tennessee
Knoxville, TN05-2021
Skills
Team Collaboration & Communication: Excel in working within diverse, cross-functional teams in both field and office settings Skilled at clear communication and fostering positive working relationships
Independent Problem Solving: Proven ability to work autonomously, identify challenges, and implement solutions effectively in high-pressure, dynamic environments
Field Safety & Risk Management: Experienced in maintaining rigorous safety protocols in hazardous environments, including UXO clearance and construction sites
Technical Mapping & GIS: Advanced GIS and GPS data collection, spatial analysis, and map production to support project planning and execution
Utility Locating & GPR: Proficient in ground penetrating radar (Sensors & Software LMX-200) and utility locating equipment for accurate subsurface mapping
Mechanical & Systems Maintenance: Practical skills in facility maintenance, mechanical systems, and field equipment operations
Project Management Principles: Trained in project lifecycle, scheduling, risk management, and stakeholder communication, integrating Agile methodologies as needed
Adaptability & Learning: Fast learner, continuously up-skilling in new technologies and best practices for GIS, project management, and field operations
Leadership & Initiative: Proactive in leading projects and guiding teams, with experience as a GIS department lead and site safety oversight
Creative & Technical Balance: Combines precision from technical roles with creativity and flexibility developed through musical training
Certification
Core Certifications
- Certified Associate in Project Management (CAPM) – PMI, valid through May 2028
- UXO Technician I Training – Relyant Global / University of Tennessee, May 2021
- GIS Specialization Certificate – UC Davis, May 2023
- Google Project Management: Professional Certificate – Completed September 2024
Safety & Compliance Certifications
- HAZWOPER 40-Hour Certification – May 2021
- HAZWOPER 8-Hour Refresher – February 2025
- OSHA 1910.120 Physical Certification – December 2024
- First Aid/CPR/AED – Heartsaver Certified – Valid through January 2026
- Anti-Terrorism Level 1 Awareness Training – Joint Knowledge Online (JKO), completed January 2024
- EPA Construction General Permit Site Inspector Training Course – Completed March 2024, valid through May 2027
- ECATTS Environmental & Construction Safety Courses – March 2024
Timeline
UXO Tech II /GIS Specialist /Geophysics Technician
Environmental Chemical Corporation
11.2022 - Current
UXO Tech I /GIS Technician
Relyant Global
06.2021 - 11.2022
Maintenance Engineer
Alupang Cove Condominiums
07.2008 - 06.2021
Certified Associate in Project Management - Project Management
Project Management Institute
Google Project Management Certificate - Project Management
Google
GIS Specialization Certificate - Geospatial Information Systems
University of California, Davis
Unexploded Ordnance Technician Level I - Munitions Response
University of Tennessee
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