Wastewater Sampling and Permit Maintenance

Walden is serving as the engineering and environmental consultant for our repeat client, an organization that manufactures metallic items for the aircraft industry.

As part of their normal production work, this firm generates significant wastewater, which they then discharge into the local sewer system. Because the firm operates in New York City, they are required to have a Wastewater Discharge Permit to ensure they are managing the effluent wastewater properly. Such permits are issued by the New York City Department of Environmental Protection (NYCDEP).

Walden’s scope of work for this project includes performing regular wastewater sampling at the facility and delivering the samples to a NYS-certified laboratory for analysis while protecting the chain of custody. The contract also requires Walden to perform an analysis of the laboratory reports and prepare a summary table of results.

Walden also prepares the required documentation for submission to the NYCDEP in compliance with the requirements of the client’s wastewater discharge permit. Additionally, the preparation of annual hazardous waste reports are periodically generated by Walden.

As part of the ongoing monthly support services, the monthly inspections of the Spill Prevention Control & Countermeasure (SPCC) Plan best management practices (BMPs) is conducted during the Walden site visits and all hazardous waste and universal waste inspections performed by the client’s staff are reviewed.

In response to a previous notice of violation, Walden has worked closely with the client to prepare a treatment process layout diagram, a process flow plot plan, a process flow diagram, and the product treatment flow diagrams. Walden also identified the locations of floor drains and sewer discharge on those documents, which were subsequently submitted to NYCDEP to settle the violation.

Walden performs an inventory of hazardous materials on-site during monthly site visits and compares the inventory against the NYCDEP reporting thresholds. The Tier II Form and associated Safety Data Sheets (SDS) are prepared for all materials that exceed the threshold planning quantities and the draft Tier II Form is provided to the client for review and approval. Upon approval, Walden staff submit the Tier II Form and associated filing fee to the NYCDEP, LEPC and local Fire Department.

In addition to this work, Walden has performed other tasks for this client. That work has included regular Opacity Testing and providing guidance on regulatory violations. Walden staff also works in partnership with other consultants at the facility to provide guidance and recommendations on emergency action plans for first responders.

Our philosophy of collaboration has resulted in the best value for this client and allows Walden to help ensure permits like the Clean Air Tracking System (CATS) permit, which is also required by NYCDEP, are up to date.