2 responses to “Elevated toxic metals at community garden site raise concerns”

  1. Stewart Paulson

    In considering any policy changes should consider whether the food in the gardens makes up a significant percentage of intake by the consumer using the garden. And what plants are grown.
    It is likely the lb is from lb gasolline that used to be used.
    Zinc is often from manufacturing and industry I think.
    Other questions are where did the soil originate from. Are they raised or ground level and if a grass is known to concentrate toxic materials rent the plots out for a few years, grow grass to clean the soil by concentrating it in the plants and discard the grass in a environmentally friendly way. Is that possible or a possible aid to keeping metal toxins at acceptable level in the soil.

    1. Ethan

      Hi Stewart,

      Thanks for your comment. Here’s a link to the paper, it may help to answer some of your questions about the methodology of the study: http://www.scielo.cl/scielo.php?pid=S0718-95162014005000052&script=sci_arttext