John D. Hynes & Associates, Inc.


Geotechnical Services

John D. Hynes & Associates, Inc. provide geotechnical exploration and consulting services on a broad spectrum of projects, including but not limited to:

  • Dredge-Basin and Lagoon Systems
  • Residential Structures
  • Beachfront Condominiums
  • Complete Hospital Projects & Additions
  • Schools and Institutional Projects
  • Bridges
  • Shopping Centers
  • Expansions to Industrial Plants
  • Water Towers
  • Transmission Towers
  • Underground Structures
  • Airport and Marina Projects
  • Shoreline Improvement System
  • Utility-Line Systems
  • Power Plant Systems
  • Office Buildings



Additionally, the firm's engineering staff has designed many soils-related structures such as foundations, retaining walls, pile caps, bridge abutments, shoring systems, and pavements.

Environmental Services

John D. Hynes & Associate's evaluates surface and subsurface conditions at sites with known or suspected soil and (or) groundwater contamination. Environmental projects typically consist of a limited site study followed, if contamination is detected, by a more detailed study, and then by design and installation of an appropriate and cost-effective system to remediate the contamination. Our Staff at John D. Hynes & Associates work closely with local, state and federal agencies that oversee the cleanup of contaminated sites so a project moves quickly to closure.

Environmental services include, but are not limited to:

  • Comprehensive studies at federal Superfund and state-equivalent sites
  • Evaluation of facilities with concerns such as hazardous substances or leaking underground storage tanks
  • Lead-based paint testing
  • Phase I Environmental Site Assessments and Transaction Screenings for real property transfers
  • Hydrogeological services include:
    • shallow and deep aguifer testing for water-supply and sewage disposal projects
    • evaluation of groundwater flow systems and contaminated-transport processes
    • evaluation of soil conditions and field testing for spray irrigation studies
    • installation of piezometers and monitoring wells, often to depths of 125 feet



Construction Inspection & Materials Testing Services

John D. Hynes & Associates provide a full range of construction inspection and materials testing services that include, but not limited to:

Construction Inspections

  • Soils /Compaction Inspections
  • Concrete Testing
  • Footing Inspections
  • Structural Steel Inspections
  • Masonry Inspections
  • Roofing Inspections
  • Asphalt Testing
  • Fireproofing Inspection
  • Piling Inspection
  • Pile Load Test Evaluations


Materials Testing

  • Compressive Strength Tests for Concrete, Mortar and Grout
  • Standard or Modified Proctor Tests
  • CMU Prism Compression Tests
  • Sieve Analysis
  • Atterberg Limits (Liquid and Plastic)
  • California Bearing Ratio (CBR) Tests
  • Organic Content Test by Loss on Ignition
  • pH Tests for Soils
  • Specific Gravity Tests for Asphalt Concrete Cores
  • Block Absorption Equivalent Thickness Tests


Materials testing is performed in accordance with the applicable ASTM, AASHTO, or Military Specification standards. Our field and laboratory services are supervised by registered professional engineers. John D. Hynes & Associates Materials Testing laboratory has been inspected and approved by the American Association of State Highway and Transportation Officials (AASHTO).

Drilling Services

Experienced drill crews and state-of-the-art equipment at John D. Hynes & Associates enable the firm to drill test borings and set monitoring wells at sites and under conditions of wide-ranging difficulty:

  • along shorelines
  • in marshlands
  • through piers
  • from bridges
  • from floating platforms
  • inside structures
  • on hill slopes