Walden implemented a Supplemental Environmental Project (SEP) to address a violation observed during USEPA’s MS4 inspection at a Highway Yard. At the time of this inspection, the Contractor installing underground storage tanks at the site discharged unfiltered...
The USEPA and NYSDEC conducted comprehensive Municipal Separate Storm Sewer System (MS4) inspections at vehicle maintenance, salt storage, petroleum, and chemical storage facilities in March 2013. In preparation for the scheduled USEPA/NYSDEC inspections, Walden...
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...
Working for a mid western U.S.A Investor-Owned Utility company, Walden developed a renewal and improvement prioritization program for tank coatings. The utility provides drinking water to over 650,000 people in 46 cities and towns. With more than 125 tanks spread...
