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   Counties page > Hg in Conterminous US > Hg in central US

Mercury in Counties of the Central US

Fremont Co.: Hg= 0.017 +/- 0.014 ppm Tripp Co.: Hg= 0.017 +/- 0.005 ppm Shannon Co.: Hg= 0.032 +/- 0.006 ppm Niobrara Co.: Hg= 0.023 +/- 0.012 ppm Natrona Co.: Hg= 0.018 +/- 0.008 ppm Allamakee Co.: Hg= 0.031 +/- 0.004 ppm Winneshiek Co.: Hg= 0.030 +/- 0.003 ppm Kossuth Co.: Hg= 0.035 +/- 0.004 ppm Lincoln Co.: Hg= 0.026 +/- 0.003 ppm Mitchell Co.: Hg= 0.032 +/- 0.003 ppm Turner Co. Hutchinson Co. Charles Mix Co.: Hg= 0.038 +/- 0.004 ppm Gregory Co.: Hg= 0.040 +/- 0.009 ppm Converse Co.: Hg= 0.020 +/- 0.010 ppm Douglas Co. Fall River Co.: Hg= 0.028 +/- 0.008 ppm Crawford Co.: Hg= 0.017 +/- 0.005 ppm Todd Co. Bennett Co. Sioux Co.: Hg= 0.058 +/- 0.039 ppm O Cerro Gordo Co.: Hg= 0.039 +/- 0.010 ppm Hancock Co.: Hg= 0.041 +/- 0.004 ppm Clay Co.: Hg= 0.037 +/- 0.004 ppm Palo Alto Co.: Hg= 0.036 +/- 0.004 ppm Chickasaw Co.: Hg= 0.031 +/- 0.003 ppm Floyd Co.: Hg= 0.033 +/- 0.002 ppm Grant Co.: Hg= 0.018 +/- 0.005 ppm Iowa Co.: Hg= 0.023 +/- 0.010 ppm Yankton Co.: Hg= 0.038 +/- 0.004 ppm Bon Homme Co.: Hg= 0.036 +/- 0.007 ppm Union Co.: Hg= 0.031 +/- 0.003 ppm Clay Co.: Hg= 0.034 +/- 0.003 ppm Fayette Co.: Hg= 0.034 +/- 0.003 ppm Clayton Co.: Hg= 0.033 +/- 0.005 ppm Sioux Co.: Hg= 0.016 +/- 0.008 ppm Dawes Co.: Hg= 0.015 +/- 0.005 ppm Sheridan Co.: Hg= 0.017 +/- 0.008 ppm Cherry Co.: Hg= 0.010 +/- 0.000 ppm Keya Paha Co.: Hg= 0.015 +/- 0.007 ppm Boyd Co.: Hg= 0.044 +/- 0.015 ppm Cherokee Co.: Hg= 0.043 +/- 0.003 ppm Plymouth Co.: Hg= 0.038 +/- 0.005 ppm Buena Vista Co.: Hg= 0.035 +/- 0.003 ppm Pocahontas Co.: Hg= 0.040 +/- 0.007 ppm Wright Co.: Hg= 0.038 +/- 0.003 ppm Franklin Co.: Hg= 0.038 +/- 0.004 ppm Humboldt Co.: Hg= 0.036 +/- 0.004 ppm Butler Co.: Hg= 0.031 +/- 0.007 ppm Bremer Co.: Hg= 0.031 +/- 0.003 ppm Holt Co.: Hg= 0.022 +/- 0.008 ppm Knox Co.: Hg= 0.024 +/- 0.009 ppm Cedar Co.: Hg= 0.031 +/- 0.006 ppm Brown Co.: Hg= 0.010 +/- 0.000 ppm Lafayette Co.: Hg= 0.035 +/- 0.006 ppm Rock Co.: Hg= 0.013 +/- 0.003 ppm Dixon Co.: Hg= 0.031 +/- 0.003 ppm Dubuque Co.: Hg= 0.025 +/- 0.004 ppm Delaware Co.: Hg= 0.036 +/- 0.014 ppm Webster Co.: Hg= 0.040 +/- 0.004 ppm Buchanan Co.: Hg= 0.030 +/- 0.003 ppm Black Hawk Co.: Hg= 0.032 +/- 0.005 ppm Goshen Co.: Hg= 0.018 +/- 0.017 ppm Platte Co.: Hg= 0.013 +/- 0.006 ppm Woodbury Co.: Hg= 0.040 +/- 0.007 ppm Ida Co.: Hg= 0.041 +/- 0.003 ppm Sac Co.: Hg= 0.039 +/- 0.005 ppm Calhoun Co.: Hg= 0.036 +/- 0.005 ppm Hamilton Co.: Hg= 0.032 +/- 0.003 ppm Hardin Co.: Hg= 0.039 +/- 0.006 ppm Grundy Co.: Hg= 0.063 +/- 0.034 ppm Dakota Co.: Hg= 0.031 +/- 0.001 ppm Jo Daviess Co.: Hg= 0.021 +/- 0.005 ppm Box Butte Co.: Hg= 0.018 +/- 0.005 ppm Pierce Co.: Hg= 0.025 +/- 0.006 ppm Antelope Co.: Hg= 0.021 +/- 0.007 ppm Carbon Co.: Hg= 0.020 +/- 0.007 ppm Albany Co.: Hg= 0.019 +/- 0.008 ppm Jackson Co.: Hg= 0.030 +/- 0.009 ppm Wayne Co.: Hg= 0.032 +/- 0.004 ppm Benton Co.: Hg= 0.028 +/- 0.003 ppm Linn Co.: Hg= 0.032 +/- 0.007 ppm Tama Co.: Hg= 0.035 +/- 0.007 ppm Jones Co.: Hg= 0.026 +/- 0.004 ppm Thurston Co.: Hg= 0.027 +/- 0.003 ppm Sweetwater Co.: Hg= 0.022 +/- 0.008 ppm Monona Co.: Hg= 0.030 +/- 0.008 ppm Crawford Co.: Hg= 0.032 +/- 0.006 ppm Carroll Co.: Hg= 0.037 +/- 0.010 ppm Boone Co.: Hg= 0.036 +/- 0.004 ppm Marshall Co.: Hg= 0.043 +/- 0.007 ppm Greene Co.: Hg= 0.030 +/- 0.002 ppm Story Co.: Hg= 0.034 +/- 0.006 ppm Carroll Co.: Hg= 0.014 +/- 0.003 ppm Grant Co.: Hg= 0.010 +/- 0.000 ppm Hooker Co.: Hg= 0.010 +/- 0.000 ppm Madison Co.: Hg= 0.022 +/- 0.005 ppm Stanton Co.: Hg= 0.026 +/- 0.007 ppm Cuming Co.: Hg= 0.026 +/- 0.004 ppm Wheeler Co.: Hg= 0.011 +/- 0.001 ppm Garfield Co.: Hg= 0.017 +/- 0.004 ppm Thomas Co.: Hg= 0.010 +/- 0.000 ppm Loup Co.: Hg= 0.011 +/- 0.001 ppm Blaine Co.: Hg= 0.010 +/- 0.000 ppm Burt Co.: Hg= 0.029 +/- 0.010 ppm Clinton Co.: Hg= 0.028 +/- 0.004 ppm Garden Co.: Hg= 0.012 +/- 0.003 ppm Morrill Co.: Hg= 0.011 +/- 0.002 ppm Scotts Bluff Co.: Hg= 0.010 +/- 0.000 pp Cedar Co.: Hg= 0.030 +/- 0.003 ppm Boone Co.: Hg= 0.019 +/- 0.005 ppm Harrison Co.: Hg= 0.054 +/- 0.058 ppm Shelby Co.: Hg= 0.032 +/- 0.005 ppm Dallas Co.: Hg= 0.030 +/- 0.004 ppm Polk Co.: Hg= 0.033 +/- 0.003 ppm Audubon Co.: Hg= 0.038 +/- 0.011 ppm Guthrie Co.: Hg= 0.030 +/- 0.006 ppm Jasper Co.: Hg= 0.036 +/- 0.004 ppm Iowa Co.: Hg= 0.032 +/- 0.011 ppm Poweshiek Co.: Hg= 0.037 +/- 0.009 ppm Johnson Co.: Hg= 0.027 +/- 0.003 ppm Rock Island Co.: Hg= 0.018 +/- 0.004 ppm Scott Co.: Hg= 0.031 +/- 0.007 ppm McPherson Co.: Hg= 0.010 +/- 0.000 ppm Arthur Co.: Hg= 0.010 +/- 0.000 ppm Colfax Co.: Hg= 0.024 +/- 0.004 ppm Platte Co.: Hg= 0.022 +/- 0.007 ppm Dodge Co.: Hg= 0.057 +/- 0.062 ppm Custer Co.: Hg= 0.014 +/- 0.005 ppm Greeley Co.: Hg= 0.011 +/- 0.001 ppm Valley Co.: Hg= 0.015 +/- 0.005 ppm Logan Co.: Hg= 0.010 +/- 0.000 ppm Banner Co.: Hg= 0.011 +/- 0.001 ppm Washington Co.: Hg= 0.474 +/- 0.629 ppm Laramie Co.: Hg= 0.018 +/- 0.010 ppm Muscatine Co.: Hg= 0.024 +/- 0.006 ppm Henry Co.: Hg= 0.016 +/- 0.004 ppm Nance Co.: Hg= 0.019 +/- 0.005 ppm Warren Co.: Hg= 0.028 +/- 0.005 ppm Madison Co.: Hg= 0.039 +/- 0.005 ppm Washington Co.: Hg= 0.028 +/- 0.004 ppm Keokuk Co.: Hg= 0.026 +/- 0.005 ppm Mahaska Co.: Hg= 0.031 +/- 0.005 ppm Marion Co.: Hg= 0.032 +/- 0.003 ppm Pottawattamie Co.: Hg= 0.041 +/- 0.028 p Cass Co.: Hg= 0.038 +/- 0.004 ppm Adair Co.: Hg= 0.043 +/- 0.011 ppm Butler Co.: Hg= 0.020 +/- 0.005 ppm Saunders Co.: Hg= 0.039 +/- 0.053 ppm Cheyenne Co.: Hg= 0.016 +/- 0.004 ppm Louisa Co.: Hg= 0.032 +/- 0.008 ppm Keith Co.: Hg= 0.015 +/- 0.008 ppm Polk Co.: Hg= 0.024 +/- 0.005 ppm Merrick Co.: Hg= 0.030 +/- 0.008 ppm Lincoln Co.: Hg= 0.013 +/- 0.006 ppm Kimball Co.: Hg= 0.019 +/- 0.005 ppm Sherman Co.: Hg= 0.033 +/- 0.018 ppm Howard Co.: Hg= 0.014 +/- 0.003 ppm Douglas Co.: Hg= 0.211 +/- 0.167 ppm Mercer Co.: Hg= 0.022 +/- 0.012 ppm Deuel Co.: Hg= 0.019 +/- 0.004 ppm Sarpy Co.: Hg= 0.019 +/- 0.002 ppm Hamilton Co.: Hg= 0.023 +/- 0.010 ppm Jefferson Co.: Hg= 0.028 +/- 0.005 ppm Henry Co.: Hg= 0.025 +/- 0.005 ppm Wapello Co.: Hg= 0.030 +/- 0.002 ppm Clarke Co.: Hg= 0.041 +/- 0.008 ppm Monroe Co.: Hg= 0.032 +/- 0.003 ppm Lucas Co.: Hg= 0.033 +/- 0.004 ppm Mills Co.: Hg= 0.029 +/- 0.004 ppm Montgomery Co.: Hg= 0.040 +/- 0.012 ppm Adams Co.: Hg= 0.036 +/- 0.010 ppm Union Co.: Hg= 0.033 +/- 0.005 ppm Knox Co.: Hg= 0.019 +/- 0.003 ppm Des Moines Co.: Hg= 0.024 +/- 0.005 ppm Henderson Co.: Hg= 0.028 +/- 0.004 ppm Warren Co.: Hg= 0.027 +/- 0.006 ppm Cass Co.: Hg= 0.020 +/- 0.004 ppm Dawson Co.: Hg= 0.015 +/- 0.006 ppm Buffalo Co.: Hg= 0.019 +/- 0.006 ppm York Co.: Hg= 0.022 +/- 0.004 ppm Seward Co.: Hg= 0.016 +/- 0.005 ppm Hall Co.: Hg= 0.014 +/- 0.002 ppm Lancaster Co.: Hg= 0.015 +/- 0.004 ppm Perkins Co.: Hg= 0.018 +/- 0.007 ppm Routt Co.: Hg= 0.038 +/- 0.015 ppm Moffat Co.: Hg= 0.029 +/- 0.022 ppm Jackson Co.: Hg= 0.035 +/- 0.009 ppm Sedgwick Co.: Hg= 0.018 +/- 0.004 ppm Logan Co.: Hg= 0.016 +/- 0.006 ppm Weld Co.: Hg= 0.027 +/- 0.013 ppm Larimer Co.: Hg= 0.031 +/- 0.014 ppm Fremont Co.: Hg= 0.027 +/- 0.002 ppm Page Co.: Hg= 0.038 +/- 0.013 ppm Van Buren Co.: Hg= 0.026 +/- 0.004 ppm Taylor Co.: Hg= 0.032 +/- 0.005 ppm Davis Co.: Hg= 0.027 +/- 0.004 ppm Ringgold Co.: Hg= 0.031 +/- 0.005 ppm Decatur Co.: Hg= 0.037 +/- 0.009 ppm Appanoose Co.: Hg= 0.024 +/- 0.004 ppm Wayne Co.: Hg= 0.027 +/- 0.005 ppm Lee Co.: Hg= 0.027 +/- 0.007 ppm Otoe Co.: Hg= 0.014 +/- 0.004 ppm Phillips Co.: Hg= 0.016 +/- 0.005 ppm Fulton Co.: Hg= 0.020 +/- 0.010 ppm Frontier Co.: Hg= 0.010 +/- 0.000 ppm Chase Co. Hayes Co. Gosper Co.: Hg= 0.010 +/- 0.000 ppm Adams Co.: Hg= 0.013 +/- 0.003 ppm Fillmore Co.: Hg= 0.016 +/- 0.003 ppm Clay Co.: Hg= 0.015 +/- 0.003 ppm Saline Co.: Hg= 0.016 +/- 0.005 ppm Kearney Co.: Hg= 0.014 +/- 0.003 ppm Phelps Co.: Hg= 0.015 +/- 0.004 ppm Hancock Co.: Hg= 0.013 +/- 0.004 ppm McDonough Co.: Hg= 0.018 +/- 0.005 ppm Clark Co.: Hg= 0.014 +/- 0.005 ppm Scotland Co.: Hg= 0.014 +/- 0.005 ppm Schuyler Co.: Hg= 0.015 +/- 0.005 ppm Putnam Co.: Hg= 0.012 +/- 0.003 ppm Atchison Co.: Hg= 0.018 +/- 0.004 ppm Mercer Co.: Hg= 0.013 +/- 0.005 ppm Nodaway Co.: Hg= 0.019 +/- 0.011 ppm Harrison Co.: Hg= 0.013 +/- 0.005 ppm Worth Co.: Hg= 0.014 +/- 0.002 ppm Nemaha Co.: Hg= 0.012 +/- 0.002 ppm Morgan Co.: Hg= 0.022 +/- 0.010 ppm Gage Co.: Hg= 0.012 +/- 0.002 ppm Johnson Co.: Hg= 0.011 +/- 0.001 ppm Grand Co.: Hg= 0.037 +/- 0.027 ppm Yuma Co.: Hg= 0.013 +/- 0.004 ppm Washington Co.: Hg= 0.016 +/- 0.004 ppm Gentry Co.: Hg= 0.012 +/- 0.002 ppm Sullivan Co.: Hg= 0.010 +/- 0.000 ppm Red Willow Co.: Hg= 0.010 +/- 0.001 ppm Furnas Co.: Hg= 0.010 +/- 0.000 ppm Harlan Co.: Hg= 0.012 +/- 0.002 ppm Hitchcock Co.: Hg= 0.011 +/- 0.001 ppm Nuckolls Co.: Hg= 0.012 +/- 0.002 ppm Thayer Co.: Hg= 0.013 +/- 0.002 ppm Franklin Co.: Hg= 0.012 +/- 0.002 ppm Webster Co.: Hg= 0.012 +/- 0.001 ppm Dundy Co.: Hg= 0.010 +/- 0.000 ppm Jefferson Co.: Hg= 0.012 +/- 0.002 ppm Adair Co.: Hg= 0.010 +/- 0.000 ppm Knox Co.: Hg= 0.013 +/- 0.002 ppm Schuyler Co.: Hg= 0.011 +/- 0.001 ppm Grundy Co.: Hg= 0.010 +/- 0.000 ppm Holt Co.: Hg= 0.018 +/- 0.006 ppm Boulder Co.: Hg= 0.165 +/- 0.143 ppm Pawnee Co.: Hg= 0.010 +/- 0.000 ppm Richardson Co.: Hg= 0.020 +/- 0.007 ppm Lewis Co.: Hg= 0.010 +/- 0.000 ppm Rio Blanco Co.: Hg= 0.022 +/- 0.011 ppm Adams Co.: Hg= 0.012 +/- 0.002 ppm Daviess Co.: Hg= 0.010 +/- 0.000 ppm Andrew Co.: Hg= 0.011 +/- 0.002 ppm Cass Co.: Hg= 0.013 +/- 0.002 ppm Brown Co.: Hg= 0.010 +/- 0.001 ppm Garfield Co.: Hg= 0.027 +/- 0.008 ppm De Kalb Co.: Hg= 0.010 +/- 0.000 ppm Macon Co.: Hg= 0.010 +/- 0.000 ppm Linn Co.: Hg= 0.011 +/- 0.002 ppm Cheyenne Co.: Hg= 0.013 +/- 0.004 ppm Rawlins Co.: Hg= 0.012 +/- 0.003 ppm Jewell Co.: Hg= 0.021 +/- 0.005 ppm Smith Co.: Hg= 0.020 +/- 0.006 ppm Phillips Co.: Hg= 0.023 +/- 0.006 ppm Decatur Co.: Hg= 0.013 +/- 0.003 ppm Republic Co.: Hg= 0.022 +/- 0.008 ppm Washington Co.: Hg= 0.014 +/- 0.003 ppm Norton Co.: Hg= 0.016 +/- 0.004 ppm Marshall Co.: Hg= 0.012 +/- 0.002 ppm Adams Co.: Hg= 0.034 +/- 0.033 ppm Nemaha Co.: Hg= 0.016 +/- 0.005 ppm Brown Co.: Hg= 0.031 +/- 0.006 ppm Doniphan Co.: Hg= 0.020 +/- 0.004 ppm Livingston Co.: Hg= 0.011 +/- 0.002 ppm Shelby Co.: Hg= 0.012 +/- 0.002 ppm Marion Co.: Hg= 0.014 +/- 0.003 ppm Gilpin Co.: Hg= 0.120 +/- 0.052 ppm Eagle Co.: Hg= 0.045 +/- 0.020 ppm Summit Co.: Hg= 0.046 +/- 0.017 ppm Jefferson Co.: Hg= 0.044 +/- 0.023 ppm Denver Co.: Hg= 0.054 +/- 0.015 ppm Morgan Co.: Hg= 0.017 +/- 0.003 ppm Clear Creek Co.: Hg= 0.043 +/- 0.020 ppm Pike Co.: Hg= 0.018 +/- 0.010 ppm Buchanan Co.: Hg= 0.016 +/- 0.004 ppm Scott Co.: Hg= 0.016 +/- 0.002 ppm Caldwell Co.: Hg= 0.010 +/- 0.000 ppm Clinton Co.: Hg= 0.011 +/- 0.001 ppm Arapahoe Co.: Hg= 0.030 +/- 0.010 ppm Chariton Co.: Hg= 0.014 +/- 0.004 ppm Ralls Co.: Hg= 0.017 +/- 0.008 ppm Monroe Co.: Hg= 0.014 +/- 0.005 ppm Cloud Co.: Hg= 0.016 +/- 0.004 ppm Jackson Co.: Hg= 0.014 +/- 0.004 ppm Atchison Co.: Hg= 0.020 +/- 0.006 ppm Carroll Co.: Hg= 0.014 +/- 0.005 ppm Randolph Co.: Hg= 0.011 +/- 0.001 ppm Pike Co.: Hg= 0.013 +/- 0.004 ppm Kit Carson Co.: Hg= 0.012 +/- 0.002 ppm Sherman Co.: Hg= 0.011 +/- 0.001 ppm Thomas Co.: Hg= 0.017 +/- 0.004 ppm Park Co.: Hg= 0.035 +/- 0.017 ppm Osborne Co.: Hg= 0.016 +/- 0.004 ppm Sheridan Co.: Hg= 0.020 +/- 0.004 ppm Rooks Co.: Hg= 0.025 +/- 0.004 ppm Mitchell Co.: Hg= 0.016 +/- 0.004 ppm Graham Co.: Hg= 0.017 +/- 0.005 ppm Clay Co.: Hg= 0.017 +/- 0.004 ppm Elbert Co.: Hg= 0.034 +/- 0.013 ppm Riley Co.: Hg= 0.012 +/- 0.002 ppm Lincoln Co.: Hg= 0.023 +/- 0.010 ppm Pottawatomie Co.: Hg= 0.020 +/- 0.004 pp Douglas Co.: Hg= 0.036 +/- 0.012 ppm Platte Co.: Hg= 0.017 +/- 0.003 ppm Ray Co.: Hg= 0.012 +/- 0.002 ppm Greene Co.: Hg= 0.014 +/- 0.003 ppm Clay Co.: Hg= 0.013 +/- 0.002 ppm Jefferson Co.: Hg= 0.013 +/- 0.002 ppm Leavenworth Co.: Hg= 0.016 +/- 0.004 ppm Saline Co.: Hg= 0.015 +/- 0.004 ppm Calhoun Co.: Hg= 0.023 +/- 0.019 ppm Lake Co.: Hg= 0.078 +/- 0.023 ppm Mesa Co.: Hg= 0.020 +/- 0.010 ppm Pitkin Co.: Hg= 0.098 +/- 0.067 ppm Audrain Co.: Hg= 0.012 +/- 0.003 ppm Howard Co.: Hg= 0.016 +/- 0.004 ppm Ottawa Co.: Hg= 0.017 +/- 0.004 ppm Lafayette Co.: Hg= 0.012 +/- 0.003 ppm Jersey Co.: Hg= 0.027 +/- 0.020 ppm Gunnison Co.: Hg= 0.056 +/- 0.023 ppm Boone Co.: Hg= 0.012 +/- 0.003 ppm Jackson Co.: Hg= 0.015 +/- 0.005 ppm Lincoln Co.: Hg= 0.014 +/- 0.003 ppm Geary Co.: Hg= 0.012 +/- 0.002 ppm Lincoln Co.: Hg= 0.017 +/- 0.004 ppm Delta Co.: Hg= 0.054 +/- 0.027 ppm Shawnee Co.: Hg= 0.018 +/- 0.006 ppm Wabaunsee Co.: Hg= 0.016 +/- 0.004 ppm Wyandotte Co.: Hg= 0.019 +/- 0.005 ppm Montgomery Co.: Hg= 0.012 +/- 0.002 ppm Logan Co.: Hg= 0.016 +/- 0.005 ppm Wallace Co.: Hg= 0.012 +/- 0.003 ppm Russell Co.: Hg= 0.020 +/- 0.010 ppm Dickinson Co.: Hg= 0.023 +/- 0.011 ppm Ellis Co.: Hg= 0.019 +/- 0.006 ppm Gove Co.: Hg= 0.023 +/- 0.005 ppm Trego Co.: Hg= 0.014 +/- 0.002 ppm El Paso Co.: Hg= 0.028 +/- 0.011 ppm Teller Co.: Hg= 0.064 +/- 0.038 ppm Douglas Co.: Hg= 0.015 +/- 0.004 ppm Callaway Co.: Hg= 0.010 +/- 0.001 ppm Cooper Co.: Hg= 0.015 +/- 0.002 ppm Johnson Co.: Hg= 0.026 +/- 0.005 ppm Chaffee Co.: Hg= 0.049 +/- 0.019 ppm Cheyenne Co.: Hg= 0.024 +/- 0.006 ppm Warren Co.: Hg= 0.013 +/- 0.004 ppm St. Charles Co.: Hg= 0.031 +/- 0.026 ppm Saline Co.: Hg= 0.022 +/- 0.006 ppm Pettis Co.: Hg= 0.017 +/- 0.004 ppm Johnson Co.: Hg= 0.011 +/- 0.002 ppm Moniteau Co.: Hg= 0.013 +/- 0.003 ppm St. Louis Co.: Hg= 0.028 +/- 0.010 ppm Ellsworth Co.: Hg= 0.017 +/- 0.004 ppm Morris Co.: Hg= 0.011 +/- 0.001 ppm Osage Co.: Hg= 0.020 +/- 0.004 ppm Cass Co.: Hg= 0.014 +/- 0.004 ppm Lyon Co.: Hg= 0.018 +/- 0.009 ppm Cole Co.: Hg= 0.014 +/- 0.002 ppm Franklin Co.: Hg= 0.014 +/- 0.003 ppm Miami Co.: Hg= 0.016 +/- 0.003 ppm Gasconade Co.: Hg= 0.011 +/- 0.002 ppm Franklin Co.: Hg= 0.016 +/- 0.005 ppm Osage Co.: Hg= 0.011 +/- 0.001 ppm Wichita Co.: Hg= 0.015 +/- 0.004 ppm Scott Co.: Hg= 0.020 +/- 0.003 ppm Lane Co.: Hg= 0.015 +/- 0.003 ppm Greeley Co.: Hg= 0.013 +/- 0.003 ppm Ness Co.: Hg= 0.019 +/- 0.006 ppm Fremont Co.: Hg= 0.051 +/- 0.039 ppm Rush Co.: Hg= 0.020 +/- 0.003 ppm Barton Co.: Hg= 0.015 +/- 0.003 ppm Morgan Co.: Hg= 0.015 +/- 0.005 ppm Montrose Co.: Hg= 0.025 +/- 0.013 ppm Kiowa Co.: Hg= 0.028 +/- 0.007 ppm McPherson Co.: Hg= 0.021 +/- 0.006 ppm Marion Co.: Hg= 0.021 +/- 0.008 ppm Henry Co.: Hg= 0.014 +/- 0.003 ppm Benton Co.: Hg= 0.013 +/- 0.002 ppm Crowley Co.: Hg= 0.034 +/- 0.009 ppm Rice Co.: Hg= 0.016 +/- 0.005 ppm Pueblo Co.: Hg= 0.030 +/- 0.014 ppm Chase Co.: Hg= 0.016 +/- 0.005 ppm Jefferson Co.: Hg= 0.019 +/- 0.009 ppm Bates Co.: Hg= 0.012 +/- 0.002 ppm Saguache Co.: Hg= 0.066 +/- 0.093 ppm Coffey Co.: Hg= 0.023 +/- 0.007 ppm Miller Co.: Hg= 0.014 +/- 0.003 ppm Anderson Co.: Hg= 0.016 +/- 0.007 ppm Linn Co.: Hg= 0.017 +/- 0.006 ppm Pawnee Co.: Hg= 0.019 +/- 0.008 ppm Ouray Co.: Hg= 0.054 +/- 0.027 ppm Maries Co.: Hg= 0.013 +/- 0.003 ppm Camden Co.: Hg= 0.026 +/- 0.009 ppm Prowers Co.: Hg= 0.027 +/- 0.008 ppm Bent Co.: Hg= 0.022 +/- 0.007 ppm Otero Co.: Hg= 0.032 +/- 0.008 ppm Finney Co.: Hg= 0.013 +/- 0.004 ppm Custer Co.: Hg= 0.043 +/- 0.010 ppm Kearny Co.: Hg= 0.014 +/- 0.005 ppm Hamilton Co.: Hg= 0.013 +/- 0.003 ppm Hodgeman Co.: Hg= 0.014 +/- 0.002 ppm Stafford Co.: Hg= 0.022 +/- 0.008 ppm St. Clair Co.: Hg= 0.013 +/- 0.003 ppm Crawford Co.: Hg= 0.031 +/- 0.014 ppm Washington Co.: Hg= 0.034 +/- 0.015 ppm Harvey Co.: Hg= 0.023 +/- 0.011 ppm Reno Co.: Hg= 0.034 +/- 0.028 ppm Greenwood Co.: Hg= 0.022 +/- 0.005 ppm Phelps Co.: Hg= 0.023 +/- 0.008 ppm Hinsdale Co.: Hg= 0.040 +/- 0.024 ppm Edwards Co.: Hg= 0.016 +/- 0.006 ppm Butler Co.: Hg= 0.033 +/- 0.015 ppm St. Francois Co.: Hg= 0.031 +/- 0.012 pp Hickory Co.: Hg= 0.014 +/- 0.004 ppm Vernon Co.: Hg= 0.016 +/- 0.008 ppm Woodson Co.: Hg= 0.017 +/- 0.005 ppm Allen Co.: Hg= 0.023 +/- 0.013 ppm Bourbon Co.: Hg= 0.026 +/- 0.008 ppm Pulaski Co.: Hg= 0.020 +/- 0.009 ppm Huerfano Co.: Hg= 0.042 +/- 0.016 ppm Gray Co.: Hg= 0.019 +/- 0.005 ppm Mineral Co.: Hg= 0.029 +/- 0.007 ppm San Juan Co.: Hg= 0.084 +/- 0.054 ppm Ford Co.: Hg= 0.016 +/- 0.003 ppm Sedgwick Co.: Hg= 0.034 +/- 0.029 ppm Dallas Co.: Hg= 0.024 +/- 0.009 ppm Cedar Co.: Hg= 0.015 +/- 0.005 ppm Laclede Co.: Hg= 0.028 +/- 0.009 ppm Rio Grande Co.: Hg= 0.038 +/- 0.008 ppm Polk Co.: Hg= 0.015 +/- 0.006 ppm Pratt Co.: Hg= 0.026 +/- 0.006 ppm Las Animas Co.: Hg= 0.029 +/- 0.013 ppm Dent Co.: Hg= 0.025 +/- 0.010 ppm Alamosa Co.: Hg= 0.036 +/- 0.017 ppm Iron Co.: Hg= 0.033 +/- 0.009 ppm Stanton Co.: Hg= 0.014 +/- 0.005 ppm Haskell Co.: Hg= 0.011 +/- 0.001 ppm Grant Co.: Hg= 0.012 +/- 0.003 ppm Kiowa Co.: Hg= 0.017 +/- 0.005 ppm Wilson Co.: Hg= 0.018 +/- 0.004 ppm Neosho Co.: Hg= 0.017 +/- 0.005 ppm Kingman Co.: Hg= 0.043 +/- 0.033 ppm Crawford Co.: Hg= 0.043 +/- 0.015 ppm Costilla Co.: Hg= 0.049 +/- 0.021 ppm Barton Co.: Hg= 0.026 +/- 0.009 ppm Baca Co.: Hg= 0.027 +/- 0.009 ppm La Plata Co.: Hg= 0.030 +/- 0.012 ppm Elk Co.: Hg= 0.024 +/- 0.006 ppm Texas Co.: Hg= 0.029 +/- 0.009 ppm Reynolds Co.: Hg= 0.032 +/- 0.014 ppm Dade Co.: Hg= 0.039 +/- 0.022 ppm Webster Co.: Hg= 0.022 +/- 0.007 ppm Wright Co.: Hg= 0.038 +/- 0.007 ppm Sumner Co.: Hg= 0.030 +/- 0.013 ppm Cowley Co.: Hg= 0.025 +/- 0.010 ppm Meade Co.: Hg= 0.013 +/- 0.002 ppm Clark Co.: Hg= 0.017 +/- 0.004 ppm Barber Co.: Hg= 0.027 +/- 0.020 ppm Greene Co.: Hg= 0.019 +/- 0.007 ppm Archuleta Co.: Hg= 0.033 +/- 0.010 ppm Shannon Co.: Hg= 0.039 +/- 0.018 ppm Conejos Co.: Hg= 0.035 +/- 0.010 ppm Morton Co.: Hg= 0.011 +/- 0.002 ppm Stevens Co.: Hg= 0.010 +/- 0.000 ppm Seward Co.: Hg= 0.010 +/- 0.001 ppm Montgomery Co.: Hg= 0.017 +/- 0.003 ppm Harper Co.: Hg= 0.023 +/- 0.013 ppm Labette Co.: Hg= 0.024 +/- 0.009 ppm Comanche Co.: Hg= 0.025 +/- 0.008 ppm Jasper Co.: Hg= 0.050 +/- 0.028 ppm Cherokee Co.: Hg= 0.051 +/- 0.020 ppm Wayne Co.: Hg= 0.030 +/- 0.005 ppm Chautauqua Co.: Hg= 0.055 +/- 0.037 ppm Lawrence Co.: Hg= 0.058 +/- 0.078 ppm Carter Co.: Hg= 0.033 +/- 0.010 ppm Christian Co.: Hg= 0.043 +/- 0.052 ppm Douglas Co.: Hg= 0.021 +/- 0.009 ppm Newton Co.: Hg= 0.110 +/- 0.061 ppm Howell Co.: Hg= 0.029 +/- 0.006 ppm Beaver Co.: Hg= 0.012 +/- 0.003 ppm Harper Co.: Hg= 0.014 +/- 0.002 ppm Cimarron Co.: Hg= 0.014 +/- 0.007 ppm Union Co.: Hg= 0.017 +/- 0.005 ppm Woods Co.: Hg= 0.051 +/- 0.031 ppm Rio Arriba Co.: Hg= 0.030 +/- 0.016 ppm San Juan Co.: Hg= 0.693 +/- 2.529 ppm Craig Co.: Hg= 0.025 +/- 0.007 ppm Ottawa Co.: Hg= 0.058 +/- 0.033 ppm Osage Co.: Hg= 0.014 +/- 0.006 ppm Nowata Co.: Hg= 0.018 +/- 0.004 ppm Washington Co.: Hg= 0.017 +/- 0.005 ppm Kay Co.: Hg= 0.014 +/- 0.006 ppm Grant Co.: Hg= 0.013 +/- 0.004 ppm Alfalfa Co.: Hg= 0.021 +/- 0.016 ppm Texas Co.: Hg= 0.010 +/- 0.000 ppm Colfax Co.: Hg= 0.035 +/- 0.039 ppm Taos Co.: Hg= 0.024 +/- 0.010 ppm Stone Co.: Hg= 0.277 +/- 0.376 ppm Barry Co.: Hg= 0.359 +/- 0.622 ppm Butler Co.: Hg= 0.040 +/- 0.010 ppm Oregon Co.: Hg= 0.026 +/- 0.008 ppm Ripley Co.: Hg= 0.034 +/- 0.007 ppm Woodward Co. Taney Co.: Hg= 0.024 +/- 0.010 ppm Ozark Co.: Hg= 0.014 +/- 0.004 ppm McDonald Co.: Hg= 0.051 +/- 0.014 ppm Delaware Co.: Hg= 0.055 +/- 0.055 ppm Noble Co.: Hg= 0.013 +/- 0.003 ppm Rogers Co.: Hg= 0.030 +/- 0.009 ppm Garfield Co.: Hg= 0.013 +/- 0.003 ppm Ellis Co.: Hg= 0.010 +/- 0.000 ppm Pawnee Co.: Hg= 0.012 +/- 0.002 ppm Mayes Co.: Hg= 0.038 +/- 0.020 ppm Major Co. Dallam Co.: Hg= 0.012 +/- 0.004 ppm Sherman Co.: Hg= 0.012 +/- 0.003 ppm Lipscomb Co. Ochiltree Co. Hansford Co. Benton Co.: Hg= 0.083 +/- 0.043 ppm Fulton Co.: Hg= 0.031 +/- 0.012 ppm Carroll Co.: Hg= 0.028 +/- 0.010 ppm <