DGL provides professional engineering and surveying services. Specialties consist of: roadways, bridges, drainage, parking lots, traffic operations, land subdivision, site development, industrial structural design and survey/mapping.

Natural Gas, Electric Power & Energy Management

*Natural gas contract brokerage ??lectricity contract brokerage *Utility aggregation ??nergy efficiency assessments & improvement projects ??tility bill auditing ??tility tariff analysis ??nergy market forecasting ??nergy market risk assessmen

Flexible plastic fabricators providing liners for ponds, potable applications and secondary containment of hydrocarbons as well as clean rooms and other customized bags and bladders.

MANUFACTURER OF WASTEWATER TREATMENT SYSTEMS, WASTEWATER DISINFECTION CHEMICALS AND WASTEWATER DECHLORINATION CHEMICALS.

Environmental consulting & engineering services including: environmental due diligence, site investigation, soil & groundwater sampling, remediation design and implementation, permitting & compliance; O&M of wastewater & drinking water systems.

Water Treatment Chemicals Boiler & Cooling Tower service Reverse Osmosis Equipment

Landscape maintenance and installation. Large area mowing. Lawn sprinklers

Production of biodiesel fuel using waste grease, virgin oils and algae as a feedstock

We manufacture and supply filters for all air and liquid applications.

Provide System Integration for control systems in the water/waste water industry. Ability to design, build, verfiy, and startup all related control and instrumentation equipment. Ability to resolve communication issues related to remote monitoring.

Coordinate Electrical/Mechanical construction

Working as a general contractor for misalienus needs for govermental hire. also working on research of renewable energy primarily wind power and invention

Investment Advisory, Investement Supervision, Portfolio Management, Real Estate Investment Management, LEED Green Construction, Property Management

Hazardous and non-hazardous liquid and dry waste transportation services, waste vacuum and management services, dredging, dewatering, excavation, remediation, pit or pond or tank cleaning, high pressure vaccing and waterblasting services

INDUSTRIAL FABRICATION&ERECT PREENGINEERED BUILDING.AIR, WATER&SOUND POLLUTION CONTROL, BLAST MACHINE&COLLECTOR REBUILD, POWER&PROCESS PIPING, INCINERATION&ENERGY RECOVERY EQUIPMENT, CRANE CAB&CONTROL PULPIT, STRUCTURAL STEEL, RIGGING&PREENGINEER BUILDING, CRANE

Full service construction company focusing on 'Green Building'; using recycled materials and products.

ELECTRICAL SUBSTATIONS PACKAGER - OUTDOOR, HIGH VOLTAGE SUBSTATIONS - STEEL, STRUCTURAL; SUBSTATIONS - PACKAGED ASSEMBLIES, OUTDOOR, ELECTRICAL.

We are a certified highway contractor in the State of Ohio, Michigan, Kentucky and West Virginia. We are a certified DBE contractor. We construct type I & II bridges; drainage structures, fencing, signage, and misc. concrete work.

Full service Commercial Diving company.

Special and Advanced Environmental Engineering and Science Services, based on 40 years of experience.

FABRICATION OF SCREW AUGERS AND CONVEYOR SCREWS

Specializing in plumbing, water and sewer line inspection (with cameras) and installation. Clean and repair drains up to 24 inch. Portable toilets and septic and sewage and non-hazardous waste pumping. We also do excavation, brush removal and demolition.

Design and buils of Cleanrooms, Metrology Labs, Gear Labs, Gage Lbas, C.M.M. Rooms, Environmental Chambers, Humidity Chambers, Testing Chambers. laboratories, cleanroom certifications, lab certifications.

design, manufacture, installation of all types of water treatment equipment