was established on Guam in November 2010 anticipating to participate in the so-called Marine Relocation/Military Buildup with the objective of bringing services, not historically used, to the island in which to establish a toe hold and from which to expand into more traditional services thereby gaining market share

Geophysical Engineering

OYO and its group of companies owns various geophysical instruments and have qualified professionals and technicians that can be deployed for any type of geophysical or geological surveys.

Subsurface Utility Engineering (SUE)

Metal Detector Cable Locator Ground Penetration Radar

A new engineering technology that involves a cost-effective collection, depiction, and management of existing subsurface utilities that may exist in any particular area. OYO owns the most sophisticated instruments such as the ground penetration radar (GPR), the pipe/cable locator, and the metal detector, also known as the magnetometer, in locating the exact locations of underground utilities.

Rebar Detection (Structural Concrete Evaluation)


OYO Pacific has an instrument called the Structure Scan which is manufactured by GSSI, another member of OYO Group. The equipment can determine the exact locations, depths, and sizes of reinforcing bars as deep as 20 inches thick which would be applicable to any concrete building structure.

Geophysical/Geological Exploration

OYO and its group of companies own various geophysical instruments which can be used for any type of geophysical or geological surveys. OYO can provide the most appropriate instruments that can measure geologic features, determine the engineering properties of soils and rocks, and the detection of hidden cultural features. Geologic features may include faults, bedrock flows, discontinuities and voids, and groundwater.

OYO Pacific can provide the instruments such as seismic refraction and seismic reflection instruments to facilitate geologic mapping by determining the compressional pressure (also known as the primary waves (P-waves)) and the secondary (also known as the transverse or shear wave (S-wave)) velocities of soils and rocks over a large area in comparison to the conventional method of subsurface soil exploration using drilling equipment which will require extensive clearing to access the site. We can also out-source highly technical, well-qualified professional geophysical engineers and technicians from our subsidiary companies to perform and to conduct any type of geophysical/geological engineering investigation, if necessary.

Geotechnical Engineering

Geotechnical Consultation & Special Inspection

OYO currently employs a registered professional engineer, who has more than 37 years of progressive experience in providing geotechnical and foundation engineering, construction material testing, special inspection, quality control (QA/QC) services in Guam, Northern Mariana Islands, Palau, Fed. States of Micronesia, the Philippines, and Central and Northern California.

He was involved in numerous phases of work-related geotechnical and foundation engineering for various type of infrastructures development projects including military facilities in California, Guam, and Philippines.

Foundation Design

Forensic Evaluation

Consultation, Quality Control, & Inspection

Subsurface Drilling & Logging

Value Engineering

Having the advantage of new technologies, company resources, and professional capabilities, OYO Pacific can provide value engineering services for any development project that may need to be further evaluated for other alternative designs that can be developed in the context of economics, structural integrity, and/or time constraint.

Civil Services

OYO Corporation is experienced in the preparation of technical infrastructure reports and construction documents for large and small residential, commercial, mixed-use, and industrial site developments. By working with municipal jurisdictions, we have prepared numerous technical studies and final design documents for such project types as: transportation facilities including roadways; bicycle and pedestrian paths; and wet facilities (storm water, potable water, waster water, and reclaimed water) and dry facilities (underground power, communication and natural gas lines). We understand each utilities place and importance within an overall infrastructure master plan and how to evaluate each infrastructure component in an ever scrutinizing regulatory environmental that requires increasing efficiency and sustainability. We provide technical analysis to meet demanding regulatory requirements and adhere to a disciplined and detailed approach in the preparation of construction documents using the CAD applications as needed.

Geoenvironmental Engineering