Street Sweeping

Description Street sweeping gives the City an overall clean appearance, and For More Information: aids in helping reduce traffic accidents and air pollution caused by Division fine particles. Additionally, street sweeping prevents Utilities Department such as sediment particles, organics, oil, grease, trash, 303-655-2121 road salt, and trace metals from entering and/or plugging the [email protected] storm sewer system. Without street sweeping, these pollutants would be otherwise picked up by rainwater and ending impacting ______our ponds and river. Possible Pollutants • Fine-grained sediment The goal of this Standard Operation Procedure (SOP) is to provide guidance for municipal employees to help prevent stormwater • Organics pollution. If services are contracted, this SOP should be provided • Oil and Grease to the Contractor. The contract should specify that the Contractor • Trash is responsible for compliance with all applicable laws. • Road Salt • Metals Procedures • Toxins General Good Housekeeping • Operate all sweepers according to manufacturer’s • Employee/Contractor recommended settings and standards. Training • Do not conduct street sweeping during or immediately • Proper cleanup and after rainstorms. disposal procedures • Dry cleaning methods • Conduct regular maintenance of sweepers in • Stormwater retrofits accordance with the master schedule or as needed (see Heavy Equipment/Vehicle Maintenance procedures). Related Procedures • • Heavy Equipment/Vehicle Do not wash down any streets or curbs for routine Maintenance cleaning. If medians or signs are washed seasonally, • Large Outdoor Festivals & follow the Pressure Washing procedure. Events • Prior to operating the sweeper, perform a routine • Pressure Washing inspection, including checking for leaks. Follow • Street Sweeper Cleaning procedures outlined in Spill Prevention and Response and procedure if a leak is observed. • Spill Prevention and Response • Immediately contain and properly clean up all spills • Vehicle Fueling (see the Spill Prevention and Response procedure).

• Handle sweeper debris as detailed in Street Sweeper SOP - 16 Cleaning & Waste procedures.

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Frequency • Streets are swept in accordance with the Master Route/Schedule. • Schedule can be broken out by areas, season of the year, number of crew members available (i.e., once a year on City-owned parking lots, once a year on residential streets, once a year for alleys, twice a year on roadways, as needed on snow emergency routes). • Increase the frequency of street sweeping in areas prone to and dust/dirt accumulation, sensitive areas (i.e., adjacent to a sensitive waterbody), and areas that have a history of plugging. • Where feasible, schedule additional sweeping at: 1. City’s construction projects (where there is temporary storage of construction materials like dirt, sand, and road base along the roadway). 2. Special events (e.g., street fairs, art shows, and parades) where additional debris is likely to have accumulated. 3. After Park’s crew has completed maintenance activities on medians (grass cutting, landscape planting). 4. After heavy rainstorms in which sediment is present on the streets. 5. After snowmelt events, where large course sediments and garbage have been left behind.

Employee Training • Train applicable employees who perform street sweeping on this written procedure. Include information on how to avoid and report spills to the training. • Periodically conduct refresher training on the SOP for applicable employees who perform street sweeping.

Records The following records could be used to document activities performed: • Annually updated Master Route/Schedule with priority areas for sweeping indicated. • Annually updated Master Route/Schedule with priority areas for sweeping municipal parking lots, sidewalks, and other municipally-owned large outdoor paved surfaces areas. • Log of the number of curb-miles swept each year. • Records of employee training with sign-in sheet.

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