Improved NASM Framework for Food-Processing Wash-Water and Solid Residuals GIS Data

The attached files contain data that was used to create GIS maps that show a comparison between heavy metal standards in North America to Ontario's standards for land application.所附文件包含用于制作地理信息系统（GIS）地图的数据，此类地图用于呈现北美地区重金属标准与安大略省土地施用重金属标准之间的对比情况。