
ARM Group LLC
Hummelstown, PAPrecise. Responsive. Solutions.
Project: Annapolis Landfill Solar
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Precise. Responsive. Solutions.
Project: Annapolis Landfill Solar

Utility Engineering & Infrastructure Design
Service detail: Utility Engineering Design

Advanced Infrastructure Design, Inc. (AID) is a consulting engineering practice established in 1998. Headquartered in Hamilton, New Jersey, with an office in Philadelphia, Pennsylvania, it is staffed by licensed Professional Engineers, scientists, researchers, and technicians. The practice specializes in transportation infrastructure preservation, deploying advanced non-destructive testing (NDT) technologies to evaluate and design solutions for roads, bridges, tunnels, airports, substructures, foundations, and parking structures. It is led by President Mojgan Mohtashami, PhD, MBA.
Service detail: Pavement Engineering
Multi-Discipline Engineers and Consultants
Service detail: Design Services

Engineering Excellence for the Future
Service detail: Civil Engineering & Permitting
Transforming Ideas Into Reality®
Service detail: Environmental Services

Providing concise and cost-effective engineering solutions
Service detail: Civil/Site Engineering

Building on a Foundation of Excellence
Project: Friendship Park Design

A Proven Leader in Utility Engineering
Service detail: Electrical Utility Infrastructure Design
Leake Engineering, LLC is a multi-discipline engineering consulting practice headquartered in Philadelphia, Pennsylvania, with licensure in all 50 states. Originating in 2007 on Leake Avenue in New Orleans near the Army Corps of Engineers district during post-Katrina rebuilding, the practice subsequently relocated its primary operations to the Greater Philadelphia area. It serves commercial, residential, multi-family, industrial, and government clients nationwide. Core services span structural engineering, civil engineering, geotechnical investigations, and field inspection services.
Service detail: Structural Engineering

People Helping People Solve Complex Infrastructure Challenges
Project: City of Sarasota Lift Station 87

Built on firm foundations
Project: One World Trade Center
Engineers Who Understand Your Business
Project: Adaptive Reuse of North Riverfront Historic Industrial Portfolio
The Core Foundation of Your Solutions
Service detail: Engineering

Partners for What's Possible
Project: I-95 Central Access Philadelphia (CAP)

RETTEW is an industry-leading engineering consulting firm offering more than 600 engineering, environmental, surveying, planning, safety, and related technical services across a diverse range of markets including transportation, energy, development, utilities, oil and gas, healthcare, and industrial sectors. Founded in 1969, RETTEW partners with public and private clients to deliver innovative, efficient solutions on schedule and on budget.
Service detail: Civil Engineering

Over 30 Years of Engineering Innovation and Excellence
Project: Seneca Falls DRI
The Lexis Group, LLC is a Harrisburg, Pennsylvania civil engineering and professional services practice offering subsurface utility engineering (SUE), civil engineering, site design, land planning, survey and mapping, landscape architecture, and construction inspection and management. Its management team carries over 65 years of combined A/E industry experience serving transportation agencies, state and local governments, commercial and industrial developers, healthcare campuses, and land development clients.
Service detail: Subsurface Utility Engineering (SUE)
Technical Skill. Creative Spirit.
Project: Waterfront Walkway Seawall

Designing the Future
Service detail: Civil, Mechanical & Electrical Engineering

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.
Project: La Salle University Stormwater Management