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 Elimination System (NPDES) permit. New York’s State Pollutant Discharge Elimination System (SPDES) is a NPDES-approved program that issues permits in NYS. Permit holders are required to demonstrate continued compliance with routine stormwater sampling. Walden ensures continued compliance for these clients by providing sample scheduling and on-site sample collection as well as sample analysis review and recommendations as required. One such client, which operates a large private Bus fleet within NYC, did not meet their permit standards. After a detailed review of their operations, the installation of water berms which helps contain contaminates was instituted and stormwater standards were meet, thus ensuring continued permit compliance.