© 2015 Associated Earth Sciences, Inc.

Associated Earth Sciences, Inc. 2017



The process of identifying, predicting, evaluating, and mitigating the biophysical, social, and other relevant effects of development proposals prior to major decisions being taken and commitments made.

AESI specializes in providing environmental services to support real estate transactions and to manage environmental issues for commercial, governmental, and residential property owners and lending institutions. Our ability to provide both environmental and geotechnical services simplifies contracting for our clients and allows integration of field programs and project management, thereby saving time and money. AESI is experienced at dealing with the Washington State Department of Ecology to provide the correct documentation and interpretation of the regulations in the best interest of our clients.


Services Include but not limited to:


Site Assessment

  • Due Diligence

  • Environmental Site Assessment

  • Remedial Investigations/Feasibility Study (RI/FS)

  • Property Transaction Support

  • Underground Storage Tanks (UST) Assessment

  • Vapor Intrusion Assessment and Mitigation

  • Groundwater Analysis & Modeling


Remediation Services

  • Development and Evaluation of Remedial Alternatives

  • Cleanup Action Plans

  • Remedial Design and Cost Estimates

  • Cost Recovery & Allocation

  • Litigation Support

  • Preparation of Construction Bid Documents & Contractor Over-sight

  • Permitting

  • Waste Characterization and Disposal


Regulatory Analysis, Assistance & Compliance

  • Model Toxics Control Act (MTCA)

  • Department of Ecology Voluntary Cleanup (VCP) Program

  • Pollution Liability Insurance Agency (PLIA) Petroleum Technical           

  • Assistance Program (PTAP)

  • Negotiations with Regulatory     Agencies

  • Spill Prevention, Control and Countermeasure Plans (SPCC)


  • Regulatory Compliance under WAC 173-304 & 173-351

  • Hydrogeologic Studies & Characterization

  • Groundwater Monitoring & Statistical Analysis