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Kathleen Harrison, P.G. QSP, QSD, QISP, ToR, REA

Kathleen Harrison is a Principal Geologist based in California with more than 20 years of experience focused on watershed management, stormwater pollution prevention, and erosion control. She is a significant contributor to water resource projects across the United States.

From power companies to petroleum producers to commercial developers, her clients depend upon her in-depth understanding of industrial, construction, and municipal National Pollutant Discharge Elimination System (NPDES) compliance, permitting regulations, and stormwater best management practices (BMPs). When Kathleen joined Geosyntec in 2007, she was immediately immersed in the around-the-clock emergency response efforts following the devastating San Diego wildfires that same year. She quickly identified risks to properties and regional water quality due to increased runoff and erosion, then led planning efforts for erosion restoration and emergency response activities. Kathleen is actively engaged in the changing IGP NPDES regulations and helps client's develop cost-effective strategies to achieve compliance. She is a member of the California Storm Water Quality Association IGP Sub-Committee and was selected to be on the SWRCB's IGP Training Team.  She has been instrumental in developing the SWRCB's training program for the IGP's Qualified Industrial Practitioner (QISP), where she co-chaired development of QISP training content and developing the QISP exam with the SWRCB. 

Kathleen leads multi-disciplinary teams in site investigations and project implementation related to watershed protection and stormwater management. She has been the lead author of multiple environmental assessments, environmental impact statements, and environmental impact reports in accordance with the California Environmental Quality Act and the National Environmental Protection Act (CEQA/NEPA).  Kathleen assist clients prepare and negotiate regulatory permits including California Department of Fish and Wildlife 1600 Streambed Alteration Agreements, U.S. Army Corps of Engineers nationwide and individual 404 and 408 permits, and Regional Water Quality Control Board 401 Water Quality Certifications.

To advance the state of the practice, she also has developed and conducted training courses related to NPDES compliance, including stormwater BMP evaluations and inspections, documentation requirements, erosion and sediment controls. She has been a senior reviewer or lead author on numerous NPDES compliance documents including water quality technical reports, jurisdictional urban runoff management plans, and storm water monitoring plans for industrial, municipal and construction clients.

Contact Kathleen Harrison at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-619-297-1530.

Career Summary: Kathleen Harrison, P.G. QSP, QSD, QISP, ToR, REA

  • Specialties: Watershed and Stormwater Management; Water and Natural Resources Conservation and Restoration; Surface Water and Groundwater Supply Studies and Development; Erosion and Sediment Control
  • Practice Areas: Water and Natural Resources
  • Disciplines: Environmental Sciences, Hydrogeology, Water Resources Sciences
  • Education: B.S., Geologic Sciences, Western Washington University, 1985
  • Registration: California Professional Geologist, 6316; Wetland Delineation and Management Training Certification, U.S. Army Corps of Engineers; California QSD/QSP Storm Water Certification, 01150; California, Registered Environl Asses, CA 4016

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Geosyntec Consultants
Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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