Resources

Please check the links below for current forms or contact us to help you with something.

Notice of Intent for Primary Permittee
Notice of Intent for Secondary Permittee
Notice of Intent for Teritary Permittee
Notice of Termination
Disturbed Acreage Fee Letter
NPDES Storm Water Fact Sheet

Terminology

  • NPDES: The National Pollutant Discharge Elimination System (NPDES), a nationally mandated program implemented by each state, is designed to protect waterways from contamination. Developers are required to treat and/or detain stormwater runoff before it is discharged to creeks or storm drains. HydroSpec specializes in ensuring that your project controls stormwater runoff and will meet all federal and state guidelines.
  • Best Management Practices/BMP's: Are actions taken to prevent or reduce the impact of water runoff - either distortion of the terrain or pollution of water - through erosion control.
  • DOT Silt Fence: Made of a combination of woven wire and filter cloth supported by posts, a silt fence allows water to flow from a site at a more controlled pace, ensuring that adjacent land retains its natural topography. The fence also traps sediment from runoff water allowing cleaner water to filter through, which reduces the amount of deposits entering a body of water.
  • Erosion Control Blankets (ECB): A temporary, biodegradable product, the ECB is designed to prevent erosion while vegetation grows on moderate slopes. The blanket is typically used when other ground coverings, such as mulch or seed, would not be as effective. ECBs are made of natural products like straw, wood and coconut, or are synthetic woven materials, such as polypropylene.
  • Geotextile Fabrics: These permeable fabrics, woven or non-woven, are laid directly on the ground and used in conjunction with the existing soil or infill to protect the land on sites. Geotextiles assist in erosion control on any number of projects, including roads, driveways, embankments and retaining structures. The fabrics provide the following benefits:
    • Separating soil or infill from another layer of material - either soil or a surface product; for example, in gravel driveways
    • Filtering sediment from water as it moves through a construction site
    • Draining water away from a surface product to protect against foundation erosion
    • Reinforcing the foundation of a surface product
    • Protecting the soil from by-products of a project - such as chemicals from a facility
  • Driveway Fabrics: a stabilization geotextile is placed between the aggregate and the subgrade to preserve the aggregate and reinforce the surrounding soil. Driveway fabric will also keep mud below the rock from 'pumping' up and keep cleanup to a minimum.
  • Grading Services: HydroSpec uses its own professional crews to prepare sites for implementation of erosion control solutions.
  • Hydroseeding: This process combines grass seed, fertilizer and water to form a liquid treatment that is sprayed on the ground. The primary benefits of hydroseeding over sod are ease of application and its affordability.

    There are two categories of hydroseeding. The first is a high turf quality seed. You would find this grade of hydroseeding on golf courses or in landscaped lawns. The second is used primarily for erosion control. This formula would not be expected to have the longevity of a turf quality mix.

    Straw Blowing is usually applied immediately after hydroseeding. Straw blowing places a protective layer over newly seeded grass or bare ground. The straw protects the land from wind, helps regulate the soil temperature and holds in moisture to reduce the amount of water needed for newly laid ground cover.

  • Polymer Applications: A bonding agent that is applied directly into the water, polymer applications help separate mud from water. As the chemical bonds with the sediment, larger masses form and then sink to the bottom of the body of water, allowing water to run more smoothly and cleaner.
  • RipRap: rock or other material used to armor shorelines against water erosion. Riprap reduces water erosion by resisting the hydraulic attack and dissipating the energy of flowing water or waves. The shape of rock is important. Coarse, angular rock, usually made by crushing or blasting, or from scree, is more effective at ground reinforcement than round river rock. A correct mixture of aggregate size can also aid riprap's ability to create an interlocking structure.