NPDES Permit Limits - Site Specific Standards Consultant

Caltha LLP provides specialized consulting support on State and Federal water quality standards, environmental and aquatic toxicology, and setting site-specific water quality standards and NPDES permit limits. For further information go to Caltha's Water Quality / Aquatic Toxicology Webpage, or Caltha's discussion page on current topics related to water quality standards.


Caltha staff have prepared National Ambient Water Quality Criteria for US EPA and have worked with dischargers in many States to evaluate proposed and final State water quality standards. We have expertise in a wide range of chemicals, including metals, organic and inorganic industrial chemicals, pesticides and herbicides. We have also provided expert support in the assessment of nutrient criteria. We work with dischargers and their engineers/consultants in developing site-specific water quality standards, negotiating water quality-based effluent limits (WQBEL) and conducting environmental reviews related to potential impacts on the aquatic environment.

For further information, contact Caltha LLP at:
Email: info@calthacompany.com
Website: http://www.calthacompany.com/