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  PUBLIC WORKS DIRECTOR
    Thomas R. Flinn
    1810 East Hazelton Avenue
    Stockton, CA 95205
    (209) 468-3000 Phone
    (209) 468-2999 Fax
      E-Mail Us

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Nurseries                                          BMP IC-7

This Fact Sheet provides Best Management Practices (BMPs) that are recommended for facilities that grow and sell plants and conduct other landscaping activities.           

Potential Pollutant Sources
The following activities are potential sources of pollutants:
·         
Irrigation
·         
Garden waste disposal
·         
Chemical usage 

Pollutants may include:
·         
Nutrients (fertilizers, plant wastes)
·         
Pesticides
·         
Heavy metals (copper, lead, and zinc)
·         
Sediments


Pollution Prevention  
Implementation of pollution prevention measures may reduce or eliminate the need to implement other more costly or complicated procedures. 

The following pollution prevention principles apply to most facilities:
  • Use alternative, safer, non-toxic, and/or recycled products;
  • Reduce storm water flow across the site and redirect flows away from storm drains, gutters, and streets;
  • Reduce the use of water and/or use dry methods;
  • Recycle and reuse waste products and waste flows; and

Best Management Practices and Procedures  

GENERAL  
      
Maintain facility grounds and move or cover activities and materials to prevent contact with storm water.  
      
Promote native plants when possible to help conserve water filter impurities, reduce the need for toxic pesticides, fertilizers, and herbicides.  
      
Stencil on-site storm drains.  

IRRIGATION  
      
Use intermittent (pulse) or drip irrigation to conserve water and prevent discharges.
      
Regularly inspect irrigation systems for leaks to prevent excessive runoff from occurring.
      
Convert paved or bare soil areas to vegetation that will slow runoff (turf grasses or other comparable plant materials), if feasible.
      
Group plants with similar water needs together to improve irrigation efficiency.
      
During warm summer months, irrigate only after 6 PM and before 11 AM to reduce evaporation.

GARDEN WASTE DISPOSAL  
      
As of June 1, 2004, it is illegal to place green waste in the street.
      
Do not dispose of garden wastes in streets, waterways, or storm drains. 

CHEMICAL USAGE  

Storage and Disposal  
      
Implement storage requirements for pesticide, herbicide, and fertilizer products with guidance from the local fire department and/or County Agricultural Commissioner.
      
Provide secondary containment for chemical storage.
      
Dispose of empty containers according to the instructions on the container label. 

Pesticide Usage  
      
Follow manufacturers’ recommendations and label directions.
      
Use the minimum amount of chemicals needed for the job.
      
Use pesticides only if there is an actual pest problem (not on a regular preventative schedule).  Avoid the use of copper-based pesticides, if possible.
      
Do not apply pesticides if rain is expected or if wind speeds are above 5 mph.
      
Do not mix or prepare pesticides within 100 feet of any well, stream, or pond.
      
Do not dispose of unused pesticides by washing them down the drains.  Dispose of unused pesticides as hazardous waste.
      
Employ techniques to minimize off-target applications (e.g. spray drift) of pesticides, including consideration of alternative application techniques.
      
Careful soil mixing and layering techniques using a topsoil mix or composted organic material can be used as an effective measure to reduce herbicide use and watering. 

Fertilizer Usage  
      
Periodically test soils to determine proper fertilizer use.
      
If feasible, spread out applications of controlled-release fertilizers and use split applications of soluble fertilizers over the growing season.
      
Work fertilizers into the soil rather than dumping or broadcasting them.
      
Transition from the use of soluble fertilizers to controlled-release fertilizers.  Use slow release fertilizers whenever possible to minimize leaching.  Reduce or eliminate routine leaching of crops. 

SPILL CONTROL  
      
Develop and maintain a spill response plan.
      
Place an adequate stockpile of spill cleanup materials where it will be readily available.
      
Spot clean leaks and drips routinely.
      
Clean leaks, drips, and other spills with as little water as possible.  Use rags for small spills, a damp mop for general cleanup, and dry absorbent material for larger spills.
      
Sweep pavement and sidewalk if chemicals are spilled on these surfaces before applying irrigation water.
      
Keep the spill from entering the street, gutter, or storm drain.
      
Do not use bleach or disinfectants if there is a possibility that rinse water could flow to a street, gutter, or storm drain.

Employee Training  
·         
Train employees on these practices.
·         
Train staff on the proper maintenance of the facility.
·         
Train employees on the facility’s spill control plan and proper spill containment and cleanup procedures.
·         
Establish a regular training schedule, train all new employees, and conduct annual refresher training.
·         
Use a training log or similar method to document training.

PHONE NUMBERS

San Joaquin County Stormwater Management   468-3055
San Joaquin County Sanitary Sewer Agency     468-3090
City of Stockton Stormwater Management
         937-8791
City of Stockton Sanitary Sewer Agency           937-8750
 
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