Tackling Track-Out

One of the most visible and often challenging aspects of construction site stormwater management is track-out and the crucial role of street sweeping. Managing track-out and ensuring compliance with your General Construction Permit can be complex. At Accena SWPPP Services we understand the regulations and can help you develop and implement effective track-out control strategies

Q: What exactly is "track-out" and why is it a concern?

A: Track-out refers to the soil, mud, gravel, and other materials that become attached to vehicle tires and undercarriages as they leave your construction site and are then deposited onto public roads. This material can be washed into storm drains during rain events, contributing significant sediment and other pollutants to our local rivers and streams. The General Construction Permit mandates that you implement and maintain effective controls to minimize track-out to prevent this pollution.

Q: My SWPPP mentions "stabilized construction exits." Are these enough?

A: Stabilized construction exits (e.g., aggregate stone pads, metal rumble pads, or FODS) are a primary Best Management Practice (BMP) for minimizing track-out. When properly designed, installed, and maintained, they can significantly reduce the amount of material leaving your site. However, they are often not a complete solution on their own, especially with heavy traffic or during wet conditions. Regular street sweeping is often a necessary supplement to these exits.

Q: When is street sweeping required?

A: You are required to implement measures to prevent track-out and to clean up any track-out that does occur on public roads. The frequency of street sweeping will depend on the level of track-out from your site. If you observe visible deposits of sediment or debris on public roads, you are generally required to clean it up promptly. Your SWPPP will outline the specific BMPs you'll use to control track-out, which often includes a schedule or trigger for street sweeping.

Q: How often should I schedule street sweeping for my construction site?

A: There's no one-size-fits-all answer. The ideal frequency depends on factors like:

• Site activity: Higher traffic volume generally leads to more track-out.

• Soil type: Clay soils tend to stick to tires more than sandy soils.

• Weather conditions: Wet weather significantly increases the potential for track-out.

• Effectiveness of your stabilized construction exit: A well-maintained exit will reduce the need for frequent sweeping.

• Regulatory requirements: Your specific permit might have specific requirements or best practices to follow.

We recommend regular self-inspections of the roads adjacent to your site. If you see visible track-out, it's time to sweep. For many sites, a proactive sweeping schedule (e.g., weekly or bi-weekly) combined with prompt cleanup of any observed track-out is the best approach.

Q: What type of street sweeping equipment is most effective for construction site track-out?

A: Different types of sweepers have different capabilities. Common types include:

• Mechanical Broom Sweepers: Effective for larger debris and heavier sediment.

• Vacuum Sweepers: Excellent for capturing finer particles and dust.

Q: What should I look for when hiring a street sweeping contractor for track-out control?

A: Consider the following:

• Experience with construction site cleanup: They should understand the specific challenges of construction debris.

• Type of equipment: Ensure they have the right sweepers for your needs.

• Dust control measures: They should employ methods to minimize airborne dust during sweeping.

• Compliance with local regulations: They should be aware of proper disposal methods for collected materials.

• Responsiveness and reliability: Timely service is essential for maintaining compliance.

Q: Does sweeping the street fulfill all my track-out control obligations?

A: While street sweeping is a critical component of track-out control, it's usually part of a larger strategy. Your SWPPP should also include preventative measures like stabilized construction exits, wheel washes (if necessary), and site management practices to minimize the initial track-out. Regular inspections and documentation of your track-out control efforts, including street sweeping activities, are also essential for demonstrating compliance.

Q: What are the potential consequences of failing to control track-out from my construction site?

A: Failing to effectively manage track-out can lead to several negative consequences, including:

• Notice of Violation (NOV) from regulatory agencies.

• Fines and penalties.

• Stop-work orders.

• Negative impacts on local waterways and ecosystems.

• Poor public perception of your project.