• Solutions
    NTU provides sediment, erosion and turbidity control monitoring and consulting expertise to the construction industry.
  • Simple Technology
    Using polyacrylamide with simple technology = clean, healthy water
  • Monitoring
    We expect the unexpected!
  • Before and After GeoScrub Bubbles
    Turbidity reduction using polyacrylamide
  • Stormwater Management
    Even in the toughest environments

We use the latest ArcGIS Explorer technology to help you monitor your site's progress and development.

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"Melanie is someone I have known and worked with for many years at NC State University. She demonstrates a high level of expertise, is always well-prepared, and always makes time to ensure her students' questions are answered thoroughly. She is conscientious, enthusiastic, and always a pleasure to work with. I have nothing but the highest regard for Melanie and am honored to have worked with her."
Cathy Smith, Training Coordinator- NC State University

Turbidity Monitoring Services, Raleigh, North Carolina

NTU's goal is to provide experience and knowledge, monitoring, and quality assurance to the construction and development industry to ensure cleaner stormwater discharges from construction sites using the latest technologies. Call us at 919.412.7537 or email us today to find out how we can help you.

Blog Archive

September 16, 2013


High levels of turbidity and fine suspended sediments are often found in stormwater discharges from construction sites even when best management practices (BMPs) for sediment control are in place. This study evaluated turbidity reduction by three check dam types: 1) rock check dam representing a standard BMP, 2) excelsior wattle representing a fiber check dam (FCD), and 3) rock check dam wrapped with excelsior erosion control blanket (rock + excelsior ECB) representing an alternative FCD.