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Table 1. (continued) <br />Material and units <br />(in parentheses) <br />UK, Beaulieu estuary <br />Water temperature <12C <br />Inorganic arsenic <br />Suspended arsenic <br />Organoarsen i cal s <br />Water temperature >12C <br />Inorganic arsenic <br />Suspended arsenic <br />Organoarsenicals <br />Concentrationa Referenceb <br />(0.4-0.9) 13 <br />(0.02-0.24) 13 <br />(0.19-0.75) 13 <br />(0.6-1.1) 13 <br />(0.2-0.6) 13 <br />ND 13 <br />SEDIMENTS (mg/kg dry weight) <br />Near sewer outfall <br />From areas contaminated by <br />smelteries, arsenical herbi- <br />cides, or mine tailings <br />Surface <br />Subsurface <br />Upper Mississippi River <br />Lake Michigan <br />Naturally elevated <br />Oceanic <br />Lacustrine <br />35 3 <br />(198-3,500) 1,7,9,14,15 <br />(12-25) 1,7,9,14,15 <br />2.6 (0.6-6.2) 16 <br />(5-30) 1 <br />>500 1,9 <br />33.7 (<0.4-455) 3 <br />(5-26.9) Max. 13,000 3 <br />SNOW (mg/kg) <br />Near smelter <br />>1,000 3 <br />SOIL PORE WATERS (ug/1) <br />Mineralized areas <br />Arsenate <br />Arsenite <br />Monomethyl arsonic <br />acid (MMAA) <br />Total arsenic <br />(79-210) 17 <br />(2-11) 17 <br />(4-22) 17 <br />(93-240) 17 <br />18