Walden’s Principal designed a tertiary domestic wastewater treatment facility designed to handle daily sanitary wastewater flow from 4,800 employees at this defense plant. Process equipment included a screening system, aerated flow equalization tank, extended...
Walden evaluated the condition of this tertiary wastewater treatment plant which discharged treated wastewater to groundwater and featured denitrification filters. The plant was in poor condition but continued to meet its State Pollutant Discharge Elimination System...
Walden designed a compressed natural gas generator system which is currently being installed at an animal shelter. During emergencies, such as Superstorm Sandy, the animal shelter takes in many animals that cannot be cared for elsewhere due to the damage caused by the...
Many of today’s industries make use of a variety of materials and chemical compounds that may be harmful to humans. Air sampling is routinely used to evaluate potential exposure and to determine remediation and mitigation protocols. One of Walden’s clients operates a...
The Clean Water Act (CWA) also known as the Federal Water Pollution Control Act requires that stormwater discharges associated with industrial activity from a point source to waters of the United States are unlawful, unless authorized by a National Pollutant Discharge...
