Civil Engineering and Land Development.
Trans-Pacific Engineering Corporation (TPEC) is a Lower Gwynedd, Pennsylvania civil and environmental engineering practice delivering full-service solutions for infrastructure, land development, stormwater management, structural design, and environmental remediation. It serves residential, commercial, industrial, and municipal clients across the greater Philadelphia region, combining technical engineering expertise with public outreach and engagement from project inception through construction.
Full-phase civil site engineering covering land development, stormwater management, permitting, and construction support for residential, commercial, and industrial projects.
Civil site engineering from conceptual planning through final design, covering exterior site planning, utility investigation coordination, grading and drainage, erosion and sedimentation control, landscaping plans, and construction bidding and oversight.
Low Impact Development (LID) designs incorporating BMPs and SMPs such as bioretention systems, rain gardens, infiltration systems, subsurface systems, cisterns, and stormwater filtration, supported by watershed analysis, open-channel modeling, and NPDES permitting.
Environmental assessments, remediation support, and treatment engineering spanning subsurface contamination investigations, storage tank compliance, water and wastewater system design, and hazardous waste management for industrial and municipal clients.
Structural design and inspection for civil and architectural projects including pre-engineered buildings, new construction, structural repairs, and construction oversight, with capabilities spanning foundation design, steel and masonry design, pipe support, and thrust block design.
Environmental and engineering assessments, property condition assessments, and construction and special inspections across a broad range of project types.
Professional public outreach and engagement services supporting infrastructure projects with community communication and stakeholder coordination.
Residential · Commercial · Industrial · Infrastructure · Education · Government · Water Supply · Wastewater · Stormwater & Flood Control · Environmental & Remediation
Philadelphia, PA · Education · Client: La Salle University
Bioretention raingarden with forebay and endwall/gabion inlet system designed to manage up to 1.15 million gallons of runoff per storm event exceeding one inch of rainfall, along with additional BMPs across the campus.
Philadelphia, PA · Client: St. Vincent de Paul
Underground stormwater detention basin constructed to manage runoff for an urban institutional site.
Philadelphia, PA · Water Supply · Client: Philadelphia Water Department
Parking lot reconstruction using pervious paving to manage stormwater runoff at a Philadelphia Water Department water treatment facility.
Philadelphia, PA · Water Supply · Client: Philadelphia Water Department
Security improvements including ornamental fencing installation at a Philadelphia Water Department pumping station.