About Es²

Es² is a registered engineering firm in Louisiana, Texas, and Florida and provides a wide range of environmental engineering,consulting and science support services for industry and government. Established in 1996, Es² is built around high-end computing technologies such as GPS, Geographic Information Systems (GIS), photogrammetry, remote sensing, and image processing. Current and spatially accurate information and GIS databases provide a powerful science tool for managing and solving today’s environmental challenges from emergency contingency planning to oil spill response and coastal landloss assessments.

Range of Capability

Es² builds on the combined experience of its key personnel in conjunction with its network of associates to create expert teams that can address environmental issues along the Gulf Coast and other regions of the world. Every project is different, and Es² has the capability of establishing and coordinating integrated

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    teams of engineers, marine surveyors, geologists, biologists, ecologists, oceanographers, toxicologists, wildlife and fisheries specialists, contingency planners, spill response managers, professional landmen or field technicians to provide the necessary complement of services needed for the particular project. Our technical expertise and experience in conjunction with our in house computing and graphic capability allow us to produce customized deliverables designed to meet the specific needs of the client.

Client Sectors

Es² personnel are active in the Gulf Coast Oil Spill Response and Environmental Community. We have close working relationships with Industry, State and Federal Agencies and Academia. Our clients include major and independent oil and gas companies, refineries, pipeline companies, marine towing and...

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    barge companies, oil field service companies, law firms, insurance companies, land development companies, as well as other scientific support providers.

Commitment to Excellence

Es² is dedicated to the highest level of professionalism, business integrity, and ethics. We are committed to the belief that no business objective is so important that it will be pursued at the sacrifice of the safety of our employees, associates, clients or the public in general.


Key Personnel
Robert Simmons
Andrew Milanes
David Alford
  • Robert SimmonsRobert Simmons is the president of Es² and has over 30 years of experience in the oil and gas industry, much of which is in the area of oil spill response management. Robert Simmons has a degree in Mechanical Engineering and holds a Professional Engineer (P.E.) registration in Louisiana in both mechanical and environmental engineering. Prior to becoming a consultant in 1998, Robert was employed by Exxon Company USA Production Department for 16 years as an engineer, which included various professional and supervisory assignments in drilling engineering, facility engineering, and other project management. While still at Exxon, he served as a Task Force Operations Manager in Prince William Sound, AK during the Exxon Valdez spill cleanup in 1989 and has been directly involved in the field assessment, management and science support on hundreds of other spills and marine casualties since then. He has developed and conducted numerous spill response drills and customized training sessions on various spill response related topics. Robert is recognized in the Gulf Coast spill response community and is currently retained by the Water Quality Insurance Syndicate (WQIS) as a Surveyor and Principal Consultant to manage and respond to marine pollution incidents involving their insured’s.
  • Andrew MilanesAndrew Milanes has a degree in Civil Engineering and over 23 years of professional experience in civil and environmental engineering. He holds Professional Engineering (P.E.) registrations in Florida, Louisiana, Mississippi, and Texas. He is also a certified GIS professional and his skills in GIS, photogrammetry, and remote sensing technologies allow Es² to develop unique and cost-effective solutions to the environmental needs of our client’s. He has completed hundreds of GIS/Mapping projects for applications including oiling delineation, Natural Resource Damage Assessment (NRDA), historical land loss analysis, beach erosion, pipeline mapping, pipeline repair documentation, and wetland restoration monitoring. Andrew also has extensive fieldwork experience on various projects including marine casualties and spills, oiling assessment and delineation, water and soil sampling, spill over flight photography, in-situ burns, bathymetry and bottom type classification surveys, and GPS surveys.
  • David Alford, GIS Manager at Es², has over 20 years of experience in Geographic Information Systems (GIS) development, implementation and analysis through civil, military, and private projects. David’s breadth of experience in GIS includes environmental resource management, endangered species management plans, utilities/infrastructure systems management, digital cartography and custom programming of web-based ArcGIS Server Applications, including Mobile Applications. A Certified GIS Professional (GISP), David has developed a wide variety of solutions using ESRI's ArcGIS for over 500 environmental projects relating to wetland delineations, Environmental Assessments (EAs), Environmental Impact Statements (EISs), and Biological Assessments (BAs), Phase I Environmental Site Assessments (ESA), and Habitat Evaluation Procedures (HEP). When he’s not building GIS applications, you can find David fishing and exploring along the Louisiana coast and inland waterways.

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What makes working with Es2 so great?

We are a group of consummate environmental professionals who approach all projects, big and small, with diligence and innovation. We are Registered Engineers, Certified GIS Professionals, Experienced Scientists and Technicians who all demand serious and meticulous results.

Backed By Experience

Established in 1996, Es² provides a wide range of engineering and science support services for Industry and the Public Sector built around high-end technologies such as GIS, GPS, image processing, and analytical data processing. Robert Simmons, P.E., President of Es², has over 30 years of experience in the oil and gas industry including 16 years as an engineer at Exxon where he served as a Task Force Operations Manager in Prince William Sound during the Exxon Valdez spill cleanup.  Andrew Milanes, P.E., Vice-President of Es² has 25 years of experience in private consulting providing high-quality services and solutions to his clients.