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Clearly America’s First Line of Defense
for Stormwater Pollution Runoff Abatement
Street Sweeping:
Ranger Kidwell-Ross, M.A.
Principal/Editor
WorldSweeper.com
Roger Sutherland, P.E.
Principal/Engineer
Cascade Water Resources
presentation by:
The beginning of street sweeping…
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Street Sweeping Waste Crediting Programs include
Communities located in 14 States Nationwide
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Street Sweeping Waste Crediting Programs
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•Reduction eciency; Mass load reduction; Lane miles swept
•Modeled load reduction
•Percentage of Mass load reduction
•Performance-based compliance
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Street Sweeping Waste Crediting Programs in California
•Orange County and MS4 Co-permittees
•Based on a Reduction eciency -"%
•Includes Bacteria and Sediment
•City of Santa Cruz, California
•Modeled load reduction
•Includes Sediment
•County and City of San Diego and MS4 Co-permittees
•Performance-based compliance
•Includes Cu, Zn, Pb, TKN, TP
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Street Sweeping Related Research Projects
Underway or Planned in Southern California
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Type of Sweeper and Operation Used
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Forward Speed of the Sweeper
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Frequency of Street Cleaning
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How to Increase a Street Sweeping Program’s Ability
to Collect Contaminated Material More Effectively
Plus and minus aspects of street sweeping…
Commonly cited disadvantages:
• Cost of sweepers plus operation and maintenance expense.
• Citizen resistance to vehicle removal requirements.
• Generally, can’t operate during heavy rain & freezing weather.
When it comes to pavement-based pollution removal,
advantages far outweigh:
• No real estate or property owner dislocation costs.
• No infrastructure to develop or maintain.
• No periodic structures or filters to check and maintain.
• And, we now know…
Sweeping is the most effective and costs the least!
Enhance sweeping’s value to your community
Use available software to predict sweeper program needs:
•Software like Sutherland’s SIMPTM can accurately model sweeper
pollutant removal, eliminating need for expensive paired basin
studies.
•Then, optimize value via allocation of sweeping program resources.
•Tip: Add sweeping dept. to stormwater dept. in order to maximize $$.
Analyze your needs to determine correct mix of air and broom
sweepers:
•Use your specific goals to maximize sweeper fleet capabilities.
•Broom sweepers not as efficient at small-micron pickup.
•Vacuum sweepers excel on porous pavement.
•Regenerative air typically best for general city street sweeping.
Street sweepers can include value-added items
• Sweepers may be outfitted with data collection/notification
systems for downed signs, potholes, low limbs, etc.
• Can provide direct notification to repair departments!
• Sweeper hopper graphics can advertise variety of civic goals.
• Sweepers offer both health and safety benefits; proof city is
proud to keep residents healthy, safe and with clean water.
Education minimizes citizen friction
Educate citizens about sweeping’s pollution removal value:
• Touch-a-truck events: Have handouts and tout web info locations.
• Develop grade-specific education modules in schools.
Educate about the “one vehicle equals three car lengths” problem:
• One parked car = three blocked ‘sweeper spaces.’
• Multiple parked cars per block = up to zero sweeping gets done.
• Areas left unswept are both unsightly and unhealthy.
The only way to maximize removal of pavement-based pollution —
and debris — is to move vehicles out of the way of sweepers.
Debris removal by sweepers is by far least expensive
way to keep community pavement looking good:
“With conventional BMPs, particulate matter removal
cost dollars per pound, anywhere from $4 to $41. For
street sweeping the cost for removing a pound of
particulate matter was 10 cents! That’s really the only
thing people need to know.”
— Dr. John Sansalone, principal investigator
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Develop a citizen-friendly car removal program:
Technological advances = very improved outcomes
Internet apps are ‘game changers’ for sweeping programs:
• Phone/computer apps can provide alerts to vehicle owners.
• Uber-like apps can show where sweepers are in real time.
• Citizens can move cars back immediately after sweeper passes.
• Makes environmental value of street sweeping an easier ‘sell.’
Streamlined (less expensive) sweeping program ticketing:
• Ticket via cameras on sweepers; this eliminates parking
enforcement involvement/expense for ticketing.
• Allow residents to re-park after sweeper goes by without penalty.
• Tickets will still pay for significant portion of sweeping program
costs.
To ensure a ‘BMP outcome,’ implement a car removal
program that answers these citizen questions:
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When implementing sweeping, remember…
• Citizen “pushback” is minimized through education.
• A real-time notification system is needed for schedule changes.
• Implement a vehicle removal system that allows immediate re-parking.
• Coordinate ticket writers with sweepers, not a 4-hour window.
Extra Credit: Work to enact regulations in your state to credit sweeping
for pollutant removal. (Florida now offers pollution removal credits
aligned with both MS4 and TMDL compliance!).
Be guided by your knowledge that…
Street sweeping is the first line of defense for
pavement-based pollutant removal.
Roger Sutherland, P.E.
For More Information…
Ranger Kidwell-Ross, M.A.
As of 2020, the two presenters had a combined 87 years of
experience with street sweeping. For assistance with any
aspect of your sweeping program, contact:
Principal/Editor, WorldSweeper.com
Director, World Sweeping Association
ranger@worldsweeper.com
360.739.7323
Principal/Engineer,
Cascade Water Resources
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