2404 Brown Street Pottstown, PA 19464

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Andrew K. Markoski

Mr. Markoski is currently the Senior Geologist for Patriot Environmental Management, LLC. His responsibilities include the implementation and direct supervision of all geologic and environmental investigations, as well as proposal and cost estimate preparation, project management, and liaison with state and federal regulatory agencies. 


Mr. Markoski has over 25 years of experience within the environmental consulting industry. The majority of this experience has been performed at the level of Geologist/Hydrogeologist and Project Manager, responsible for all facets of project activities, including but not limited to data collection and reporting; budget management; equipment, materials, and subcontractor procurement; and dialogue with regulatory agencies.


His expertise includes:


    • Field oversight and regulatory support for the closure of aboveground and underground storage tank systems in accordance with Pennsylvania and New Jersey Department of Environmental Protection regulations;


    • Numerous soil, water, groundwater, and soil vapor/indoor air sampling techniques relevant to environmental investigations in Pennsylvania, New Jersey, Indiana, New York, and Connecticut;


    • Design, installation, operation, and maintenance of soil and groundwater remediation systems at leaking petroleum storage tank sites in Pennsylvania, New Jersey and Connecticut.


    • Performance of Phase I Environmental Site Assessments for property transactions in accordance with industry standards;.


    • Field oversight of water well drilling activities for testing and production purposes for municipal and commercial clients;


    • Experience in the utilization of surface and borehole geophysical survey techniques for subsurface feature identification and bedrock hydrogeologic interpretation;


    • Coordination and field supervision of test boring investigations for foundation design purposes, as well as soil testing, ground stabilization, and foundation inspection; and,


    • Experience with direct-push, hollow-stem auger, air rotary, and mud rotary drilling techniques for monitoring well installation efforts.


Key Projects:

    • Project Manager responsible for the regulatory stewardship of over 200 underground storage tank sites in Eastern Pennsylvania and South Jersey for major and minor petroleum retailers. The sites were in various stages of regulatory compliance, ranging from site characterization following UST closure to attainment sampling prior to site closure and project completion.


    • Project Manager responsible for the expedited performance of baseline assessments for petroleum releases at over 50 retail petroleum facilities in eastern Pennsylvania following the merger of two major petroleum retailers.


    • Project Manager responsible for the stewardship of several commercial and industrial properties under the Pennsylvania Land Recycling and Environmental Remediation Standards Act (Act 2).


    • Project Geologist responsible for geologic interpretation for the expansion permit at a solid waste facility in southeastern Pennsylvania.


    • Project Geologist providing field oversight for comprehensive environmental investigations at industrial facilities in Pennsylvania, New Jersey, Connecticut, New York, Indiana and Kentucky.


    • Project Manager responsible for the completion of over 100 Phase I and Limited Phase II Environmental Site Assessments in southeastern Pennsylvania for the property development division of a major petroleum retailer.


    • Field Technician responsible for the operation and maintenance of soil and groundwater remediation systems at retail gasoline facilities, bulk storage facilities, and terminals in eastern Pennsylvania and New Jersey.


Memberships and Affiliations:

  • Pennsylvania Professional Geologist PG-003771-E
  • New Jersey Subsurface Evaluator No. 0024392
  • National Water Well Association
  • Indiana Professional Geologist No. IN2513
  • Illinois Professional Geologist No. 196.001396


  • The Pennsylvania State University