Applying Street Cleaning: Modeling to Represent Monitored Results Caroline Burger, P.E. Earth Tech, Inc.

Factors to Consider 5-year Rainfall Files Winter Season Date Range Street Texture Street Cleaning Frequency Type of Street Cleaner Street Cleaner Productivity Parking Density Parking Controls

Rainfall Data Duluth Green Bay Milwaukee Madison Minneapolis Use 5-year rainfall files Use Winter Season Date Range Parameter files and Winter Season Information can be found on the USGS website

Street Cleaning Frequency One Pass Every Two Weeks One Pass Every Week

Type of Street Cleaner Vacuum Assisted & Regenerative Air Are Modeled the Same Mechanical BroomRegenerative Air Vacuum Assisted

Street Cleaner Productivity Use 1. Coefficients based on street texture, parking density, and parking controls

Parking Densities None: No Parking Light: 1 or 2 cars per block Medium: Cars in approx. 50% of available parking Extensive: Cars in more than 90% of available parking Medium None Extensive

Parking Controls Can the Street Cleaner Reach the Curb? If cars are not allowed to park on the street during cleaning times, or if streets are cleaned when cars are usually not on the streets, the answer is yes.

Alleys Note: Alleys are considered streets in the SLU files. The model assumes street cleaning is applied to alleys. Therefore, if you do not want to model alleys as being cleaned, the alleys must be separated in the.dat file.

Street Cleaning Efficiencies Type of Land Use Parking Density Broom Street Cleaner Vacuum Assisted Cleaner Med. Den. Res. Light7%18% Strip Comm.None10%20% Shopping Ctr.None3%6%

Land Use Parking Density With Parking Controls Without Parking Controls Med. Den. Res. Med.20%8% Strip Com.Med.19%8% DowntownExt.17%13% Street Cleaning Efficiencies Vacuum Assisted Street Cleaner Frequency: 1 / week

Cleaning Frequency Broom Street Cleaner Vacuum Assisted Street Cleaner Light Parking Medium Parking Light Parking Medium Parking 1 \ Month3%2%8%7% 1 st 6 weeks – 1 \ Week; Remaining Season - 1 \ Month 9%7%17%14% 1 \ Week9%7%22%18% Street Cleaning Efficiencies Medium Density Residential No Alleys Land Use

Typical Community-Wide Results Mechanical Broom = 3 – 6 % Vacuum Assisted = 5 – 10 % Street Cleaning Program Downtown cleaned 1 / week Remainder of city cleaned 1 / 2 weeks or 1 / month Parking densities and parking controls varied based on land use

Spring Cleaning Aggressive Spring Cleaning Schedule Once per week for at least 6 weeks Schedule returns to normal after Spring Clean-Up Start as soon as snow melts Clean Entire community Vacuum Assisted Cleaner Average reduction % community-wide

Questions?

Applying Street Cleaning Street Cleaning Form

Applying Street Cleaning Winter Season Date Range Activates Calibrated Coefficients

Applying Street Cleaning Street Source Area Only Output

Applying Street Cleaning Downtown SLU File with Street Cleaning

Applying Street Cleaning Downtown SLU File with Street Cleaning - Output