Shane Parker, President 

Mr. Shane Parker, President and founder of Parker Environmental Consultants, has over 17 years of experience in the environmental planning field.  Mr. Parker is a reputable leader in the environmental planning industry, having consulted on numerous high profile and controversial development projects throughout the Southern California region. Mr. Parker has successfully managed and directed regionally significant projects involving high profile residential and mixed-use development projects, commercial office and retail developments, educational/institutional campus plans, regional shopping malls and regional entertainment and sporting facilities.  Mr. Parker possesses a broad understanding of the complex physical and regulatory issues that affect land development in today’s marketplace and has consulted numerous land use developers and governmental agencies in obtaining development entitlements under applicable CEQA and NEPA regulations.     

Educational Background and Professional Affiliations

  • BA in Geography/Environmental Sciences - UCLA 
  • Member of the Association of Environmental Professionals 
  • Member of the Urban Land Institute 
  • Former member of the City of Malibu Environmental Review Board (2002-2007)

Professional Experience 

  • 1999-2010, Vice President/Principal, Christopher A. Joseph & Associates (CAJA) 
  • 1995-1999, Senior Environmental Planner, PCR Corp.  
  • 1995, Environmental Technician, National Environmental Testing, Inc. 
  • 1992, Seasonal Firefighter, United States Forest Service - Bear Divide Station

Leanna Williams, Project Manager


Ms. Williams is experienced in planning and project management and has over 6 years of experience as an environmental compliance analyst. She holds a Master of Arts degree in Environmental Studies, with a concentration in Sustainable Development and Policy from the University of Illinois, Springfield. Ms. Williams oversees all aspects of the CEQA and NEPA documentation process including, but not limited to budgeting, scheduling, research, and technical writing.  Ms. Williams has researched and written environmental documentation in support of over twenty projects. She is technically  proficient in SoundPLAN and has authored many CEQA/NEPA noise sections and Noise Technical Impact Reports.

Jennifer Kelley, Environmental Analyst 

Ms. Jennifer Kelley has a Master of City Planning Degree from Boston University and a Bachelor of Landscape Architecture Degree from California Polytechnic State University, San Luis Obispo. Ms. Kelley provides environmental analysis services for Parker Environmental Consultants and is a member of the American Planning Association (APA). With over 6 years of professional experience in environmental design and planning, site analysis and geospatial analysis, she has developed plans and analyses for projects related to environmental restoration, site mitigation, master planning and urban design guidelines. She possesses strong skills in graphic design, research methods and analytical writing. Ms. Kelley utilizes her design and planning experience to conduct environmental and land use research and prepare environmental impact analyses, and graphics.

Mariana Zimmermann, Associate Environmental Planner 

Ms. Mariana Zimmermann has a Bachelor of Science in Environmental Studies with a concentration in Earth Science from the University of California, Santa Barbara. Ms. Zimmermann assists in the writing and production of CEQA documents and environmental analyses.  She possesses strong skills in technical writing, research, and graphic design. Prior to her position at Parker Environmental Consultants, Ms. Zimmermann was a Project Associate with UC Santa Barbara’s Institute for Energy Efficiency.  

Elise Lorenzana, Assistant Planner

Ms. Lorenzana holds a Bachelor of Science degree in Atmospheric, Oceanic & Environmental Sciences from the University of California - Los Angeles and is a member of the Association of Environmental Professionals.
Elise is an Assistant Planner with Parker Environmental Consultants and assists in all aspects of the preparation of environmental documents pursuant to CEQA and NEPA regulations. Ms. Lorenzana assists in document production and quality control/quality assurance protocols. She assists staff in land use and analytical research assignments in support of a wide array of environmental issues including but not limited to land use/zoning, aesthetics/views, population and housing, traffic and circulation, community based noise impact assessments, public services, public utilities, air quality modeling and greenhouse gas emissions inventories.