Remediation Services

  • Phytoremediation
  • Bioremediation
  • Accelerated Chemical Remediation

Environmental Consulting

  • Site Clean-up Evaluation
  • Cost Effective Solutions for Environmental Contamination
  • Permitting

Sustainable and Environmental Planning

  • Sustainable and Environmental Planning
  • Smart Growth Plan Development
  • Strategies for Reducing Stormwater and Ambient Air Pollution
  • Development Services
  • Education for Developers and Policy Makers

Environmental Engineering

  • Green Building Design
  • Low Impact Developments
  • Energy Efficient Systems Integration
  • Water Conservation and Efficiency
  • Improved Indoor Air Quality

We accept government credit cards


Key People


Valentine A. Nzengung Ph.D.
 President and CEO
Phone: 706.202.4296
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Catherine J. Knudsen
VP Federal Programs
Phone: 727.577.6460
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Grace Gray
Operations Manager
Phone: 706.202.8329
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Joe Tan , PG & PE
Project Manager
Phone: 706.316.3525
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David Gomez
Environmental Engineer
Phone: 706.316.3525
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Philip Luo
Project Engineer
Phone: 706.316.3525
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Lucie Saliki
Administrative & Financial
Phone: 706.316.3525
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Corporate Headquarters

337 South Milledge Avenue
Suite 202
Athens, Georgia 30605
Phone: 706-316-3525
Fax 706-353-9270
Email: admin@planteco.com


Florida Office

9205 34th Way
Pinellas Park, FL 33782
Phone: (727) 577-6460
Fax: (727) 577-6485
Email: cathy.knudsen@planteco.com