A state certified Professional Engineering firm specializing in engineering, environmental, educational, consulting, energy, fuel, chemical, management, waste, design, and property services.

engine oils, trans hydraulic, Lubricants, bio- hydraulic fluid, corrosion inhibitor, bio diesel, hydrostatic, bar & chain oils, turbine drip oils, metalworking, lubricating grease, food grade lubricant, food grade grease, additives, rock drill, biobased o

* General contracting/construction management * New construction * Renovation, remodel, alteration and upgrade * Design/Build * IDIQ * LEED * Green building/sustainable design * Janitorial * Facilities O&M * Grounds maintenance * Infrastructure

Retrograde, Ltd. provides Specialized Engineering, EH&S and Response Services to clients in the Federal, Industrial, Municipal and Private sectors.

remediation, characterization, consulting, D&D, R&D, radiation, nuclear measurement, proliferation, homeland security, WMD, hazardous waste, spent fuel, transportation, transuranic, project management, program management

hydrogeology, environmental

Asbestos, mold, lead abatement.

nuclear, licensing, quality, corrective, action, radiation, regulatory, protection, engineering, services, energy

SAFEGUARDS, SECURITY, SAFETY

ORAC certifications

environmental, consulting, remediation, pretreatment, permitting

Air, Water, Waste, Consulting, Environmental, Construction, Maintenance, Permitting, Evaluate, Audit, Evaluation, Liaison, Administration, Products, Services, Staffing, Negotiation, Studies, Modeling, Testing, Monitoring, Repair

tritium, hydrogen, fuel cell, test stand, amplifier, fixture, PEM, SOFC, service, calibration, bubbler, ion chamber, electrometer, fussion, isotope, nuclear, radiation, tester, consulting

Asbestos, Lead-Based Paint, OSHA, EPA, Training, Safety, Environmental

Assessment, remediation, groundwater, PST, UST, LUST

Engineering

Environmental, remediation, management systems, pollution control, pollution prevention

Security, Oversight, Cyber, Protection, Radioactive, Transportation, Policy, Budget

scanning, plotting, printing, AutoCAD support, drawinng printing, spec book printing, paper AutoCAD, digitizing paper, pdf to AutoCAD

process engineering, process design