Toxic Contaminants in the Gulf of Maine, Volume 55
3 pages matching ppm at Casco in this book
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20 highest acres Assessment Boston Bay Boston Harbor area Boston Harbor Boston Boston Harbor sites Brewster Island Cape Cod Bay Casco Bay chemical contaminants Clarks Island coastal waters concen Deer Island Dorchester Bay estuaries fish livers five Boston Harbor flounder livers range Folger Point Gap Head Gulf of Maine Harbor area sites Harbor Boston Harbor Heptachlor highest mean concentration highest nationally levels of copper longhorn sculpin Maine sites mean concentration level Merrimack River metals Muscongus Bay mussel tissue Narraguagus Bay national mean nationwide Nauset Harbor NMFS NOAA's National NS&T winter flounder Passamaquoddy Bay Penobscot Bay Pickering Island point sources ppm at Casco ppm at Quincy Quincy Bay remaining Gulf sites Salem and Boston Salem Harbor samples second highest mean sediment data SEDIMENTS MUSSELS FISH square miles STATUS AND TRENDS Stover Point substantially higher tCdane top five toxic contaminants tPAH tPCB trations winter flounder livers winter flounder sites zinc