Preventing Stormwater Pollution: Streets and Drainage Maintenance
Employees who maintain and repair our streets and drainage infrastructure can help reduce water pollution by following precautions in their daily activities:
- pavement repair
- paint striping
- storm ditch maintenance
- storm drain inlet cleaning
- Vacuum slurry and cuttings during saw-cutting operations.
- Properly dispose of slurry according to established procedures.
- Require concrete trucks to wash out in designated locations.
- Locate stockpiles of asphalt patching material on a paved surface and cover to prevent contact with rain.
- Mix only necessary amount of material for repairs.
- Sweep up and properly dispose of all unused materials.
- Clean trucks, equipment, and tools in designated wash facilities.
- Use biodegradable products rather than diesel for asphalt patching and cleanup activities.
- When wash facilities are not available, clean equipment over absorbents spread on an impervious surface.
- Promptly sweep up absorbent and dispose according to established procedures.
- DO NOT apply paint when rain is likely or in high winds.
- Waste handling for water-based (latex) paint:
- Pour small quantities of unused paint in open barrels and allow to dry.
- Dispose of dried paint in trash.
- Contain water used for equipment cleaning and dispose in sanitary sewer.
- Waste handling for oil-based paint:
- Unused oil-based paint and solvents must be disposed in accordance with established procedures.
Storm Ditch Maintenance
- Sample and analyze materials removed from ditches if it appears to be contaminated with oil or other pollutants.
- Contaminated sediments must be disposed in accordance with established procedures.
- Unpolluted soil may be used onsite as fill or stockpiled for other land application
- Cover soil stockpiles to prevent erosion and/or install silt fence to capture sediment.
- Prevent erosion by applying grass seed to exposed soils.
- Use turf reinforcement mats to protect channels until vegetation is established.
Storm Drain Inlet Cleaning
- Properly dispose of trash and debris removed from inlets.
- Report suspected dumping or pollution problems to supervisory personnel.
- Apply "NO DUMPING" markers to inlets where there is evidence of dumping.
Report Pollution and Illegal Dumping
- Look for signs of pollution during travel:
- oil sheen on water surface
- excess trash and debris
- colored or cloudy water
- dead or dying fish
- Report suspected pollution problems to supervisory personnel.