All businesses listed in this directory provide services to the Middle Peninsula.
- Please search by category or terms related to a company's service. -
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201 Thomas Johnson Drive
Frederick, Maryland 21702, US
201 Thomas Johnson Drive Frederick Maryland 21702 US

Every project is undertaken with a client focused approach, understanding that each client and project is unique. We foster open communication and transparency with our clients to best tailor our methods, while presenting cost-effective solutions, and delivering exceptional results on time and within budget. Our long standing reputation of excellence rests on our commitment to our clients, anticipating their needs, and staying ahead of their expectations. With our core values of integrity, accountability, dedication, respect, and dependability, we strive to provide unparalleled expertise and customer service, and to better the communities in which we live and work. ARRO’s team is comprised of Professional Engineers, GIS Professionals, CAD Professionals, Environmental Professionals, and professionals across various engineering disciplines. From sustaining water resources, to managing public works and developing parks, ARRO has been strengthening and protecting communities since 1946.

Specializing in living shorelines, coastal boardwalks and docks, flood mitigation, stormwater management design, roadway design, environmental compliance, water resources, GIS services, and MS4 compliance.


  • Professional Engineers
  • Professional Geologists
  • Professional Landscape Architects
  • Certified CADD Professionals
  • MS4 Professionals
  • Stormwater Professionals
  • Certified GISP
  • Licensed Operator (water/wastewater)
  • AICP
  • Certified Professional in Erosion and Sediment Control
  • Board Certified Environmental Engineer

Areas of Expertise

  • Costal Erosion Mitigation
  • Stormwater Management Design
  • Project Management
  • Environmental Compliance
  • Construction Management
  • Transportation Engineering
  • Municipal Engineering
  • Public Utility Planning/Design
  • Water Resources – Permitting (local, state, federal)
  • GIS Services



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Showing 9 results
Muscle Wall
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19120 Olde Waterford Road
Hagerstown, Maryland 21742, US
37.47 km
Muscle Wall is… a flood barrier system company that uses durable, hollow, walls that can be quick...
Ellicott Dredges
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1617 Bush Street
Baltimore, Maryland 21230, US
69.32 km
Est 1885 Ellicott Dredges is the nations oldest designer and builder of dredging equipment sold t...
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