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   Counties page > Pb in Conterminous US > Pb in east-central US

Lead in Counties of the East-Central US

La Salle Co.: Pb= 42.4 +/- 26.9 ppm Louisa Co.: Pb= 17.4 +/- 1.1 ppm Mercer Co.: Pb= 18.7 +/- 4.1 ppm Jasper Co.: Pb= 25.7 +/- 6.0 ppm Stark Co.: Pb= 23.0 +/- 2.8 ppm Newton Co.: Pb= 25.3 +/- 3.2 ppm Knox Co.: Pb= 21.7 +/- 4.0 ppm Marshall Co.: Pb= 21.0 +/- 2.6 ppm Livingston Co.: Pb= 22.1 +/- 3.6 ppm Des Moines Co.: Pb= 16.8 +/- 2.0 ppm Henderson Co.: Pb= 21.9 +/- 2.6 ppm Warren Co.: Pb= 19.7 +/- 2.4 ppm Wabash Co.: Pb= 15.0 +/- 2.3 ppm Iroquois Co.: Pb= 23.3 +/- 1.8 ppm Huntington Co.: Pb= 18.2 +/- 6.0 ppm Miami Co.: Pb= 17.3 +/- 6.7 ppm Ford Co.: Pb= 21.8 +/- 3.1 ppm Peoria Co.: Pb= 20.1 +/- 5.0 ppm Woodford Co.: Pb= 25.2 +/- 7.5 ppm Adams Co.: Pb= 17.2 +/- 1.8 ppm Wells Co.: Pb= 18.5 +/- 2.7 ppm White Co.: Pb= 14.9 +/- 3.0 ppm Cass Co.: Pb= 33.5 +/- 17.6 ppm Hardin Co.: Pb= 18.7 +/- 1.5 ppm Lee Co.: Pb= 18.4 +/- 2.6 ppm McLean Co.: Pb= 22.3 +/- 2.3 ppm Tazewell Co.: Pb= 19.5 +/- 3.4 ppm Carroll Co.: Pb= 21.4 +/- 4.4 ppm Benton Co.: Pb= 21.3 +/- 3.9 ppm Mercer Co.: Pb= 17.5 +/- 1.7 ppm Fulton Co.: Pb= 19.4 +/- 6.4 ppm Morrow Co.: Pb= 22.1 +/- 3.5 ppm Marion Co.: Pb= 20.8 +/- 2.6 ppm Auglaize Co.: Pb= 18.1 +/- 1.1 ppm Westmoreland Co.: Pb= 36.0 +/- 15.3 ppm Tuscarawas Co.: Pb= 22.0 +/- 3.2 ppm Grant Co.: Pb= 19.6 +/- 2.4 ppm Hancock Co.: Pb= 17.8 +/- 5.0 ppm McDonough Co.: Pb= 23.4 +/- 3.9 ppm Jefferson Co.: Pb= 24.8 +/- 3.0 ppm Knox Co.: Pb= 15.9 +/- 1.3 ppm Jay Co.: Pb= 17.1 +/- 2.3 ppm Blackford Co.: Pb= 18.2 +/- 3.3 ppm Howard Co.: Pb= 22.6 +/- 3.7 ppm Tippecanoe Co.: Pb= 17.1 +/- 2.4 ppm Logan Co.: Pb= 14.3 +/- 3.5 ppm Union Co.: Pb= 14.5 +/- 2.9 ppm Vermilion Co.: Pb= 22.8 +/- 5.2 ppm Shelby Co.: Pb= 19.7 +/- 1.6 ppm Washington Co.: Pb= 26.5 +/- 3.9 ppm Warren Co.: Pb= 22.3 +/- 4.5 ppm Coshocton Co.: Pb= 18.3 +/- 2.2 ppm Delaware Co.: Pb= 17.8 +/- 1.6 ppm Mason Co.: Pb= 13.6 +/- 2.3 ppm Harrison Co.: Pb= 26.8 +/- 4.3 ppm Clinton Co.: Pb= 16.8 +/- 3.8 ppm Tipton Co.: Pb= 22.2 +/- 3.1 ppm Champaign Co.: Pb= 18.6 +/- 2.9 ppm Brooke Co.: Pb= 33.5 +/- 5.2 ppm Madison Co.: Pb= 18.7 +/- 3.5 ppm Delaware Co.: Pb= 15.6 +/- 3.0 ppm Fountain Co.: Pb= 23.3 +/- 8.1 ppm Darke Co.: Pb= 18.4 +/- 2.5 ppm Bedford Co.: Pb= 22.4 +/- 4.8 ppm Logan Co.: Pb= 18.6 +/- 1.7 ppm Randolph Co.: Pb= 16.3 +/- 1.8 ppm Franklin Co.: Pb= 27.9 +/- 3.1 ppm Somerset Co.: Pb= 21.5 +/- 4.2 ppm Schuyler Co.: Pb= 11.3 +/- 1.9 ppm De Witt Co.: Pb= 21.8 +/- 2.3 ppm Piatt Co.: Pb= 20.7 +/- 1.7 ppm Licking Co.: Pb= 15.3 +/- 1.8 ppm Champaign Co.: Pb= 18.0 +/- 3.6 ppm York Co.: Pb= 27.9 +/- 14.4 ppm Guernsey Co.: Pb= 21.1 +/- 3.1 ppm Hamilton Co.: Pb= 24.9 +/- 9.1 ppm Montgomery Co.: Pb= 15.8 +/- 6.2 ppm Adams Co.: Pb= 19.0 +/- 5.4 ppm Miami Co.: Pb= 17.4 +/- 2.3 ppm Ohio Co.: Pb= 29.2 +/- 1.8 ppm Boone Co.: Pb= 46.7 +/- 41.7 ppm Belmont Co.: Pb= 29.8 +/- 3.5 ppm Muskingum Co.: Pb= 20.6 +/- 2.4 ppm Fulton Co.: Pb= 25.6 +/- 7.7 ppm Menard Co.: Pb= 19.1 +/- 3.0 ppm Vermillion Co.: Pb= 15.9 +/- 8.3 ppm Fayette Co.: Pb= 23.3 +/- 5.1 ppm Franklin Co.: Pb= 18.3 +/- 1.7 ppm Cass Co.: Pb= 13.1 +/- 2.0 ppm Madison Co.: Pb= 17.7 +/- 1.5 ppm Brown Co.: Pb= 12.8 +/- 1.7 ppm Henry Co.: Pb= 15.4 +/- 3.5 ppm Adams Co.: Pb= 24.9 +/- 2.4 ppm Macon Co.: Pb= 20.2 +/- 2.0 ppm Clark Co.: Pb= 18.4 +/- 2.7 ppm Marshall Co.: Pb= 29.3 +/- 8.8 ppm Greene Co.: Pb= 25.6 +/- 2.0 ppm Wayne Co.: Pb= 13.4 +/- 2.8 ppm Sangamon Co.: Pb= 27.2 +/- 4.6 ppm Noble Co.: Pb= 22.3 +/- 1.9 ppm Parke Co.: Pb= 11.2 +/- 2.0 ppm Hancock Co.: Pb= 19.9 +/- 2.4 ppm Fairfield Co.: Pb= 16.9 +/- 0.7 ppm Perry Co.: Pb= 20.0 +/- 4.0 ppm Marion Co.: Pb= 18.8 +/- 6.2 ppm Hendricks Co.: Pb= 36.2 +/- 43.5 ppm Montgomery Co.: Pb= 18.1 +/- 1.4 ppm Preble Co.: Pb= 15.2 +/- 3.2 ppm Edgar Co.: Pb= 13.1 +/- 1.9 ppm Douglas Co.: Pb= 17.2 +/- 2.0 ppm Morgan Co.: Pb= 23.1 +/- 8.5 ppm Monroe Co.: Pb= 26.6 +/- 2.0 ppm Putnam Co.: Pb= 13.6 +/- 3.0 ppm Greene Co.: Pb= 17.4 +/- 1.1 ppm Pike Co.: Pb= 17.3 +/- 2.2 ppm New Castle Co.: Pb= 48.8 +/- 17.1 ppm Christian Co.: Pb= 23.2 +/- 1.5 ppm Pickaway Co.: Pb= 17.1 +/- 2.2 ppm Moultrie Co.: Pb= 21.7 +/- 3.5 ppm Scott Co.: Pb= 16.3 +/- 3.0 ppm Fayette Co.: Pb= 9.5 +/- 0.8 ppm Rush Co.: Pb= 14.5 +/- 4.4 ppm Salem Co.: Pb= 57.7 +/- 20.3 ppm Morgan Co.: Pb= 23.7 +/- 1.3 ppm Atlantic Co.: Pb= 50.4 +/- 24.8 ppm Union Co.: Pb= 11.9 +/- 1.5 ppm Allegany Co.: Pb= 31.1 +/- 5.6 ppm Washington Co.: Pb= 28.2 +/- 9.2 ppm Garrett Co.: Pb= 19.8 +/- 6.3 ppm Cecil Co.: Pb= 24.8 +/- 10.4 ppm Wetzel Co.: Pb= 28.1 +/- 4.8 ppm Harford Co.: Pb= 16.6 +/- 3.3 ppm Monongalia Co.: Pb= 27.1 +/- 2.5 ppm Preston Co.: Pb= 18.7 +/- 4.1 ppm Baltimore Co.: Pb= 24.6 +/- 9.3 ppm Carroll Co.: Pb= 30.4 +/- 5.0 ppm Frederick Co.: Pb= 23.7 +/- 4.4 ppm Fayette Co.: Pb= 14.9 +/- 1.9 ppm Shelby Co.: Pb= 17.4 +/- 3.7 ppm Morgan Co.: Pb= 31.4 +/- 2.1 ppm Ralls Co.: Pb= 21.8 +/- 1.6 ppm Coles Co.: Pb= 18.2 +/- 3.6 ppm Hocking Co.: Pb= 17.1 +/- 4.3 ppm Shelby Co.: Pb= 19.1 +/- 5.1 ppm Mineral Co.: Pb= 31.8 +/- 4.0 ppm Washington Co.: Pb= 24.9 +/- 1.8 ppm Marion Co.: Pb= 32.0 +/- 8.3 ppm Johnson Co.: Pb= 12.8 +/- 4.0 ppm Morgan Co.: Pb= 14.4 +/- 2.4 ppm Berkeley Co.: Pb= 28.2 +/- 1.9 ppm Vigo Co.: Pb= 17.3 +/- 2.9 ppm Clay Co.: Pb= 16.2 +/- 2.9 ppm Tyler Co.: Pb= 26.3 +/- 2.7 ppm Pike Co.: Pb= 21.7 +/- 3.6 ppm Butler Co.: Pb= 17.5 +/- 1.5 ppm Warren Co.: Pb= 17.1 +/- 2.0 ppm Clinton Co.: Pb= 15.1 +/- 1.4 ppm Cumberland Co.: Pb= 66.7 +/- 13.3 ppm Athens Co.: Pb= 24.5 +/- 4.6 ppm Hampshire Co.: Pb= 30.3 +/- 6.9 ppm Franklin Co.: Pb= 14.5 +/- 4.0 ppm Montgomery Co.: Pb= 18.8 +/- 5.6 ppm Macoupin Co.: Pb= 21.6 +/- 8.9 ppm Greene Co.: Pb= 21.4 +/- 3.5 ppm Ross Co.: Pb= 16.6 +/- 1.6 ppm Jefferson Co.: Pb= 22.9 +/- 1.7 ppm Clark Co.: Pb= 11.8 +/- 2.1 ppm Pleasants Co.: Pb= 28.5 +/- 2.3 ppm Owen Co.: Pb= 17.4 +/- 2.7 ppm Harrison Co.: Pb= 37.1 +/- 13.7 ppm Frederick Co.: Pb= 26.6 +/- 4.2 ppm Decatur Co.: Pb= 21.0 +/- 3.3 ppm Taylor Co.: Pb= 37.7 +/- 6.1 ppm Doddridge Co.: Pb= 27.6 +/- 3.9 ppm Wood Co.: Pb= 26.4 +/- 1.5 ppm Kent Co.: Pb= 38.7 +/- 20.9 ppm Calhoun Co.: Pb= 29.9 +/- 11.4 ppm Vinton Co.: Pb= 18.0 +/- 2.9 ppm Ritchie Co.: Pb= 28.9 +/- 3.2 ppm Kent Co.: Pb= 37.5 +/- 6.0 ppm Cumberland Co.: Pb= 22.9 +/- 5.0 ppm Highland Co.: Pb= 14.9 +/- 3.2 ppm Baltimore City Co.: Pb= 42.1 +/- 19.9 pp Howard Co.: Pb= 43.9 +/- 15.3 ppm Monroe Co.: Pb= 22.1 +/- 2.7 ppm Montgomery Co.: Pb= 52.6 +/- 36.3 ppm Bartholomew Co.: Pb= 29.5 +/- 14.2 ppm Brown Co.: Pb= 25.1 +/- 3.8 ppm Grant Co.: Pb= 19.8 +/- 6.4 ppm Cape May Co.: Pb= 28.3 +/- 13.9 ppm Loudoun Co.: Pb= 24.9 +/- 5.8 ppm Hamilton Co.: Pb= 27.1 +/- 11.0 ppm Ripley Co.: Pb= 19.8 +/- 5.4 ppm Dearborn Co.: Pb= 23.2 +/- 8.4 ppm Barbour Co.: Pb= 28.5 +/- 8.6 ppm Tucker Co.: Pb= 14.5 +/- 2.1 ppm Clermont Co.: Pb= 22.9 +/- 4.2 ppm Clarke Co.: Pb= 24.7 +/- 4.7 ppm Jersey Co.: Pb= 29.8 +/- 10.4 ppm Queen Annes Co.: Pb= 37.3 +/- 9.1 ppm Sullivan Co.: Pb= 18.8 +/- 4.1 ppm Brown Co.: Pb= 18.1 +/- 2.7 ppm Hardy Co.: Pb= 22.9 +/- 3.4 ppm Anne Arundel Co.: Pb= 95.8 +/- 66.8 ppm Lincoln Co.: Pb= 30.4 +/- 9.1 ppm Fayette Co.: Pb= 18.1 +/- 6.1 ppm Effingham Co.: Pb= 14.7 +/- 4.3 ppm Jackson Co.: Pb= 17.1 +/- 1.6 ppm Meigs Co.: Pb= 23.9 +/- 1.7 ppm Pike Co.: Pb= 18.7 +/- 4.7 ppm Jennings Co.: Pb= 20.3 +/- 4.5 ppm Wirt Co.: Pb= 24.1 +/- 1.7 ppm Crawford Co.: Pb= 18.3 +/- 4.3 ppm Jasper Co.: Pb= 24.1 +/- 3.3 ppm Greene Co.: Pb= 18.2 +/- 5.9 ppm Lewis Co.: Pb= 27.2 +/- 2.6 ppm Montgomery Co.: Pb= 17.6 +/- 7.6 ppm Boone Co.: Pb= 44.0 +/- 7.5 ppm Caroline Co.: Pb= 38.8 +/- 6.4 ppm Prince Georges Co.: Pb= 63.0 +/- 74.7 pp Campbell Co.: Pb= 41.2 +/- 18.3 ppm Randolph Co.: Pb= 15.0 +/- 3.1 ppm Upshur Co.: Pb= 25.1 +/- 6.7 ppm Gilmer Co.: Pb= 26.1 +/- 1.7 ppm Shenandoah Co.: Pb= 22.6 +/- 2.7 ppm Kenton Co.: Pb= 49.6 +/- 16.4 ppm Jackson Co.: Pb= 26.9 +/- 1.7 ppm Jackson Co.: Pb= 27.9 +/- 9.9 ppm Fairfax Co.: Pb= 60.8 +/- 37.2 ppm Adams Co.: Pb= 16.2 +/- 4.2 ppm Calhoun Co.: Pb= 31.5 +/- 3.7 ppm Warren Co.: Pb= 28.4 +/- 5.1 ppm Gallia Co.: Pb= 21.9 +/- 4.7 ppm Ohio Co.: Pb= 40.1 +/- 6.8 ppm Mason Co.: Pb= 27.0 +/- 2.9 ppm Bond Co.: Pb= 18.8 +/- 4.3 ppm Scioto Co.: Pb= 15.3 +/- 0.9 ppm Fauquier Co.: Pb= 28.1 +/- 3.9 ppm Madison Co.: Pb= 26.0 +/- 7.7 ppm Sussex Co.: Pb= 42.6 +/- 15.2 ppm Warren Co.: Pb= 17.2 +/- 5.2 ppm Lawrence Co.: Pb= 23.3 +/- 5.7 ppm St. Charles Co.: Pb= 30.8 +/- 15.6 ppm Pendleton Co.: Pb= 18.5 +/- 5.4 ppm Talbot Co.: Pb= 35.9 +/- 4.2 ppm Prince William Co.: Pb= 26.8 +/- 5.1 ppm Roane Co.: Pb= 28.8 +/- 4.6 ppm Switzerland Co.: Pb= 27.9 +/- 4.9 ppm Clay Co.: Pb= 15.0 +/- 2.7 ppm Jefferson Co.: Pb= 24.6 +/- 5.1 ppm Knox Co.: Pb= 24.1 +/- 6.1 ppm Braxton Co.: Pb= 29.8 +/- 3.3 ppm Martin Co.: Pb= 20.9 +/- 7.7 ppm Daviess Co.: Pb= 20.1 +/- 9.4 ppm St. Louis Co.: Pb= 40.9 +/- 20.2 ppm Pendleton Co.: Pb= 36.1 +/- 7.2 ppm Rappahannock Co.: Pb= 34.4 +/- 3.0 ppm Gallatin Co.: Pb= 27.9 +/- 6.8 ppm Lawrence Co.: Pb= 26.0 +/- 5.1 ppm Richland Co.: Pb= 18.0 +/- 4.6 ppm Rockingham Co.: Pb= 22.1 +/- 5.1 ppm Lawrence Co.: Pb= 18.4 +/- 1.5 ppm Scott Co.: Pb= 49.9 +/- 12.5 ppm Page Co.: Pb= 30.0 +/- 3.3 ppm Bracken Co.: Pb= 20.5 +/- 3.8 ppm Marion Co.: Pb= 22.3 +/- 5.2 ppm Grant Co.: Pb= 32.3 +/- 4.3 ppm Washington Co.: Pb= 26.2 +/- 7.7 ppm St. Louis City Co.: Pb= 64.0 +/- 17.3 pp Calvert Co.: Pb= 15.1 +/- 5.6 ppm Mason Co.: Pb= 49.5 +/- 30.2 ppm Carroll Co.: Pb= 28.6 +/- 2.1 ppm Greenup Co.: Pb= 17.3 +/- 0.9 ppm Clinton Co.: Pb= 32.0 +/- 6.4 ppm Pocahontas Co.: Pb= 19.6 +/- 3.5 ppm Webster Co.: Pb= 16.9 +/- 2.3 ppm Trimble Co.: Pb= 30.1 +/- 5.1 ppm Lewis Co.: Pb= 18.3 +/- 6.2 ppm Owen Co.: Pb= 28.8 +/- 6.4 ppm Franklin Co.: Pb= 28.2 +/- 21.7 ppm Charles Co.: Pb= 13.2 +/- 4.7 ppm Dorchester Co.: Pb= 28.0 +/- 5.8 ppm Culpeper Co.: Pb= 27.6 +/- 6.0 ppm Orange Co.: Pb= 25.2 +/- 4.9 ppm Putnam Co.: Pb= 28.8 +/- 2.5 ppm Clay Co.: Pb= 20.6 +/- 4.1 ppm St. Clair Co.: Pb= 34.6 +/- 11.1 ppm Madison Co.: Pb= 29.9 +/- 3.7 ppm Kanawha Co.: Pb= 29.0 +/- 3.4 ppm Robertson Co.: Pb= 26.4 +/- 2.9 ppm Wayne Co.: Pb= 21.1 +/- 2.2 ppm Clark Co.: Pb= 44.1 +/- 15.1 ppm Cabell Co.: Pb= 27.3 +/- 4.5 ppm Henry Co.: Pb= 45.9 +/- 10.2 ppm Stafford Co.: Pb= 22.6 +/- 3.6 ppm Highland Co.: Pb= 20.0 +/- 3.5 ppm Harrison Co.: Pb= 43.0 +/- 15.3 ppm Edwards Co.: Pb= 21.5 +/- 2.1 ppm Wabash Co.: Pb= 36.5 +/- 9.5 ppm Wicomico Co.: Pb= 36.0 +/- 7.7 ppm Nicholas Co.: Pb= 14.8 +/- 3.3 ppm Pike Co.: Pb= 45.7 +/- 13.4 ppm Gibson Co.: Pb= 63.2 +/- 23.9 ppm Dubois Co.: Pb= 39.5 +/- 11.5 ppm Fleming Co.: Pb= 41.3 +/- 22.2 ppm Oldham Co.: Pb= 56.7 +/- 13.8 ppm Monroe Co.: Pb= 27.8 +/- 10.3 ppm Washington Co.: Pb= 25.6 +/- 6.8 ppm St. Marys Co.: Pb= 9.4 +/- 3.3 ppm Boyd Co.: Pb= 20.7 +/- 0.8 ppm Carter Co.: Pb= 16.6 +/- 2.5 ppm Jefferson Co.: Pb= 71.9 +/- 91.6 ppm Scott Co.: Pb= 84.4 +/- 23.2 ppm Augusta Co.: Pb= 22.1 +/- 6.6 ppm Jefferson Co.: Pb= 26.0 +/- 6.8 ppm Greene Co.: Pb= 39.1 +/- 6.9 ppm Nicholas Co.: Pb= 34.5 +/- 4.9 ppm Worcester Co.: Pb= 37.5 +/- 15.4 ppm Crawford Co.: Pb= 26.0 +/- 3.2 ppm Harrison Co.: Pb= 21.2 +/- 2.3 ppm Wayne Co.: Pb= 21.3 +/- 8.6 ppm Floyd Co.: Pb= 26.0 +/- 6.4 ppm King George Co.: Pb= 16.3 +/- 3.9 ppm Rowan Co.: Pb= 16.2 +/- 2.1 ppm Orange Co.: Pb= 23.7 +/- 10.0 ppm Jefferson Co.: Pb= 57.0 +/- 20.3 ppm Spotsylvania Co.: Pb= 20.4 +/- 4.4 ppm Lincoln Co.: Pb= 26.0 +/- 4.4 ppm Franklin Co.: Pb= 53.4 +/- 15.7 ppm Bourbon Co.: Pb= 67.7 +/- 24.0 ppm Shelby Co.: Pb= 58.1 +/- 16.0 ppm Bath Co.: Pb= 21.7 +/- 3.9 ppm Somerset Co.: Pb= 42.9 +/- 8.7 ppm Westmoreland Co.: Pb= 20.1 +/- 9.0 ppm Albemarle Co.: Pb= 37.1 +/- 10.2 ppm Lawrence Co.: Pb= 14.8 +/- 3.7 ppm Greenbrier Co.: Pb= 20.3 +/- 6.1 ppm Elliott Co.: Pb= 16.5 +/- 2.2 ppm Perry Co.: Pb= 20.8 +/- 4.2 ppm Bath Co.: Pb= 29.4 +/- 11.7 ppm Fayette Co.: Pb= 11.1 +/- 6.1 ppm White Co.: Pb= 18.7 +/- 1.8 ppm Hamilton Co.: Pb= 19.3 +/- 1.4 ppm Caroline Co.: Pb= 25.9 +/- 4.0 ppm Warrick Co.: Pb= 33.7 +/- 14.0 ppm Boone Co.: Pb= 22.0 +/- 3.9 ppm Posey Co.: Pb= 26.3 +/- 9.6 ppm Randolph Co.: Pb= 17.6 +/- 2.4 ppm Perry Co.: Pb= 20.8 +/- 4.6 ppm Crawford Co.: Pb= 67.2 +/- 73.3 ppm Fayette Co.: Pb= 84.3 +/- 32.3 ppm Washington Co.: Pb= 159.1 +/- 122.0 ppm Spencer Co.: Pb= 20.9 +/- 5.1 ppm Meade Co.: Pb= 28.0 +/- 7.5 ppm Montgomery Co.: Pb= 24.2 +/- 4.3 ppm Vanderburgh Co.: Pb= 48.8 +/- 14.7 ppm Essex Co.: Pb= 26.1 +/- 3.5 ppm Louisa Co.: Pb= 22.1 +/- 3.9 ppm Spencer Co.: Pb= 43.2 +/- 9.7 ppm Anderson Co.: Pb= 52.9 +/- 20.5 ppm Ste. Genevieve Co.: Pb= 36.2 +/- 29.1 pp Franklin Co.: Pb= 25.2 +/- 5.9 ppm Richmond Co.: Pb= 20.5 +/- 3.2 ppm Bullitt Co.: Pb= 24.9 +/- 8.0 ppm Morgan Co.: Pb= 14.1 +/- 2.0 ppm Clark Co.: Pb= 34.8 +/- 10.3 ppm Rockbridge Co.: Pb= 30.0 +/- 8.6 ppm St. Francois Co.: Pb= 193.0 +/- 173.3 pp Menifee Co.: Pb= 13.7 +/- 1.8 ppm Nelson Co.: Pb= 38.6 +/- 12.2 ppm Breckinridge Co.: Pb= 22.2 +/- 8.6 ppm Northumberland Co.: Pb= 19.0 +/- 3.6 ppm Accomack Co.: Pb= 47.1 +/- 14.6 ppm Logan Co.: Pb= 30.8 +/- 11.3 ppm Hanover Co.: Pb= 21.7 +/- 5.6 ppm Hardin Co.: Pb= 12.9 +/- 4.6 ppm Fluvanna Co.: Pb= 26.6 +/- 8.4 ppm Jessamine Co.: Pb= 35.7 +/- 12.4 ppm Johnson Co.: Pb= 12.3 +/- 2.5 ppm Hancock Co.: Pb= 16.3 +/- 1.4 ppm Nelson Co.: Pb= 22.0 +/- 4.8 ppm Raleigh Co.: Pb= 15.1 +/- 2.8 ppm Henderson Co.: Pb= 24.4 +/- 8.7 ppm Mingo Co.: Pb= 16.3 +/- 2.8 ppm King and Queen Co.: Pb= 23.2 +/- 5.5 ppm Mercer Co.: Pb= 29.6 +/- 5.4 ppm Martin Co.: Pb= 8.3 +/- 1.6 ppm Alleghany Co.: Pb= 36.8 +/- 11.3 ppm Jackson Co.: Pb= 25.8 +/- 10.7 ppm Powell Co.: Pb= 19.1 +/- 10.3 ppm Daviess Co.: Pb= 15.4 +/- 1.6 ppm Madison Co.: Pb= 24.4 +/- 5.3 ppm Washington Co.: Pb= 27.3 +/- 3.4 ppm Gallatin Co.: Pb= 16.1 +/- 2.8 ppm King William Co.: Pb= 20.6 +/- 4.7 ppm Saline Co.: Pb= 20.9 +/- 2.6 ppm Perry Co.: Pb= 22.8 +/- 7.5 ppm Goochland Co.: Pb= 24.7 +/- 6.3 ppm Union Co.: Pb= 16.7 +/- 2.9 ppm Magoffin Co.: Pb= 15.2 +/- 2.6 ppm Summers Co.: Pb= 16.8 +/- 6.0 ppm Williamson Co.: Pb= 19.7 +/- 6.3 ppm Wolfe Co.: Pb= 14.5 +/- 3.2 ppm Estill Co.: Pb= 17.7 +/- 5.5 ppm Lancaster Co.: Pb= 20.3 +/- 7.4 ppm Amherst Co.: Pb= 38.8 +/- 10.0 ppm Botetourt Co.: Pb= 41.2 +/- 13.5 ppm Buckingham Co.: Pb= 22.9 +/- 4.2 ppm Wyoming Co.: Pb= 19.3 +/- 7.1 ppm Dent Co.: Pb= 18.3 +/- 11.7 ppm Middlesex Co.: Pb= 29.7 +/- 5.5 ppm Floyd Co.: Pb= 14.7 +/- 5.3 ppm Cumberland Co.: Pb= 20.7 +/- 3.0 ppm Pike Co.: Pb= 14.2 +/- 3.7 ppm Iron Co.: Pb= 43.0 +/- 20.6 ppm Ohio Co.: Pb= 15.9 +/- 1.4 ppm Larue Co.: Pb= 15.2 +/- 2.9 ppm Monroe Co.: Pb= 23.4 +/- 5.0 ppm Marion Co.: Pb= 20.7 +/- 3.7 ppm Lee Co.: Pb= 18.4 +/- 10.0 ppm Boyle Co.: Pb= 29.5 +/- 5.0 ppm Henrico Co.: Pb= 29.3 +/- 7.2 ppm Breathitt Co.: Pb= 13.8 +/- 4.4 ppm Powhatan Co.: Pb= 26.7 +/- 4.4 ppm McLean Co.: Pb= 16.3 +/- 1.2 ppm Craig Co.: Pb= 35.1 +/- 11.1 ppm Webster Co.: Pb= 20.6 +/- 2.7 ppm Madison Co.: Pb= 55.5 +/- 32.6 ppm Lincoln Co.: Pb= 21.6 +/- 5.2 ppm New Kent Co.: Pb= 22.3 +/- 2.1 ppm Grayson Co.: Pb= 13.0 +/- 2.6 ppm Bedford Co.: Pb= 26.0 +/- 10.4 ppm Cape Girardeau Co.: Pb= 19.2 +/- 1.7 ppm Reynolds Co.: Pb= 22.0 +/- 11.5 ppm Gloucester Co.: Pb= 37.9 +/- 6.3 ppm Johnson Co.: Pb= 16.2 +/- 4.3 ppm Union Co.: Pb= 17.3 +/- 3.7 ppm Pope Co.: Pb= 18.5 +/- 3.5 ppm Hardin Co.: Pb= 15.5 +/- 1.1 ppm Bollinger Co.: Pb= 22.4 +/- 5.6 ppm Mercer Co.: Pb= 26.9 +/- 8.3 ppm Jackson Co.: Pb= 15.4 +/- 5.1 ppm Hopkins Co.: Pb= 17.2 +/- 3.7 ppm Chesterfield Co.: Pb= 30.1 +/- 4.1 ppm Northampton Co.: Pb= 39.0 +/- 4.1 ppm Appomattox Co.: Pb= 22.4 +/- 2.8 ppm Casey Co.: Pb= 15.4 +/- 3.0 ppm McDowell Co.: Pb= 28.1 +/- 9.0 ppm Crittenden Co.: Pb= 16.6 +/- 1.4 ppm Mathews Co.: Pb= 49.4 +/- 4.0 ppm Owsley Co.: Pb= 27.5 +/- 33.5 ppm Rockcastle Co.: Pb= 14.2 +/- 2.9 ppm Buchanan Co.: Pb= 16.9 +/- 2.6 ppm Knott Co.: Pb= 11.5 +/- 2.3 ppm Amelia Co.: Pb= 24.0 +/- 7.7 ppm Charles City Co.: Pb= 26.2 +/- 4.0 ppm Taylor Co.: Pb= 14.6 +/- 1.7 ppm Giles Co.: Pb= 26.2 +/- 2.8 ppm Green Co.: Pb= 14.4 +/- 2.8 ppm James City Co.: Pb= 24.7 +/- 2.4 ppm Hart Co.: Pb= 12.9 +/- 4.5 ppm Perry Co.: Pb= 12.7 +/- 4.3 ppm Campbell Co.: Pb= 15.0 +/- 4.6 ppm Livingston Co.: Pb= 20.2 +/- 4.6 ppm Shannon Co.: Pb= 21.9 +/- 2.5 ppm Roanoke Co.: Pb= 26.7 +/- 4.6 ppm Muhlenberg Co.: Pb= 16.0 +/- 2.4 ppm Prince Edward Co.: Pb= 24.7 +/- 3.7 ppm Butler Co.: Pb= 14.5 +/- 2.6 ppm York Co.: Pb= 29.9 +/- 2.3 ppm Caldwell Co.: Pb= 17.2 +/- 1.5 ppm Montgomery Co.: Pb= 20.2 +/- 1.9 ppm Clay Co.: Pb= 17.0 +/- 3.6 ppm Pulaski Co.: Pb= 12.0 +/- 2.4 ppm Edmonson Co.: Pb= 13.7 +/- 3.7 ppm Tazewell Co.: Pb= 18.6 +/- 7.3 ppm Massac Co.: Pb= 20.7 +/- 3.7 ppm Laurel Co.: Pb= 23.0 +/- 10.9 ppm Alexander Co.: Pb= 36.6 +/- 42.4 ppm Pulaski Co.: Pb= 35.5 +/- 18.8 ppm Prince George Co.: Pb= 22.6 +/- 3.6 ppm Leslie Co.: Pb= 15.0 +/- 2.1 ppm Wayne Co.: Pb= 39.2 +/- 56.5 ppm Adair Co.: Pb= 13.0 +/- 1.7 ppm Dickenson Co.: Pb= 16.7 +/- 2.7 ppm Bland Co.: Pb= 19.9 +/- 4.7 ppm Nottoway Co.: Pb= 28.2 +/- 6.2 ppm Letcher Co.: Pb= 22.0 +/- 6.0 ppm Dinwiddie Co.: Pb= 30.9 +/- 5.3 ppm Scott Co.: Pb= 28.8 +/- 40.8 ppm Charlotte Co.: Pb= 18.6 +/- 2.4 ppm Surry Co.: Pb= 27.6 +/- 3.7 ppm Pulaski Co.: Pb= 17.5 +/- 3.4 ppm Franklin Co.: Pb= 19.9 +/- 4.7 ppm Ballard Co.: Pb= 33.3 +/- 8.6 ppm McCracken Co.: Pb= 30.2 +/- 7.2 ppm Wise Co.: Pb= 23.0 +/- 3.5 ppm Warren Co.: Pb= 19.5 +/- 4.4 ppm Russell Co.: Pb= 11.0 +/- 1.2 ppm Metcalfe Co.: Pb= 10.6 +/- 2.3 ppm Lyon Co.: Pb= 19.2 +/- 1.4 ppm Barren Co.: Pb= 15.0 +/- 3.2 ppm Christian Co.: Pb= 15.6 +/- 2.3 ppm Isle of Wight Co.: Pb= 27.1 +/- 1.6 ppm Russell Co.: Pb= 21.7 +/- 4.6 ppm Pittsylvania Co.: Pb= 20.7 +/- 6.3 ppm Stoddard Co.: Pb= 20.9 +/- 5.4 ppm Floyd Co.: Pb= 21.3 +/- 2.6 ppm Hampton : Pb= 29.1 +/- 3.8 ppm Lunenburg Co.: Pb= 20.6 +/- 5.1 ppm Sussex Co.: Pb= 26.4 +/- 4.2 ppm Carter Co.: Pb= 113.0 +/- 175.8 ppm Todd Co.: Pb= 12.8 +/- 1.6 ppm Logan Co.: Pb= 10.7 +/- 1.5 ppm Wythe Co.: Pb= 36.9 +/- 16.8 ppm Mississippi Co.: Pb= 77.8 +/- 80.3 ppm Marshall Co.: Pb= 20.5 +/- 3.2 ppm Halifax Co.: Pb= 19.1 +/- 4.4 ppm Knox Co.: Pb= 21.4 +/- 2.4 ppm Norfolk : Pb= 26.4 +/- 1.3 ppm Virginia Beach : Pb= 38.4 +/- 7.6 ppm Brunswick Co.: Pb= 24.9 +/- 6.5 ppm Harlan Co.: Pb= 36.0 +/- 41.3 ppm Smyth Co.: Pb= 47.4 +/- 24.5 ppm Trigg Co.: Pb= 18.6 +/- 1.8 ppm Wayne Co.: Pb= 11.4 +/- 2.7 ppm Southampton Co.: Pb= 28.0 +/- 3.9 ppm Whitley Co.: Pb= 17.9 +/- 4.1 ppm McCreary Co.: Pb= 17.1 +/- 13.4 ppm Bell Co.: Pb= 20.2 +/- 2.5 ppm Carlisle Co.: Pb= 20.0 +/- 6.0 ppm Graves Co.: Pb= 14.1 +/- 2.6 ppm Suffolk : Pb= 26.2 +/- 3.4 ppm Cumberland Co.: Pb= 10.9 +/- 1.2 ppm Allen Co.: Pb= 18.5 +/- 3.6 ppm Carroll Co.: Pb= 23.9 +/- 3.9 ppm Washington Co.: Pb= 23.2 +/- 4.0 ppm Butler Co.: Pb= 36.8 +/- 43.5 ppm Greensville Co.: Pb= 26.8 +/- 5.9 ppm Lee Co.: Pb= 42.2 +/- 23.4 ppm Mecklenburg Co.: Pb= 20.3 +/- 3.6 ppm Scott Co.: Pb= 24.3 +/- 7.8 ppm Oregon Co.: Pb= 26.2 +/- 6.1 ppm Clinton Co.: Pb= 11.4 +/- 2.9 ppm Simpson Co.: Pb= 18.5 +/- 2.9 ppm Patrick Co.: Pb= 21.3 +/- 4.1 ppm New Madrid Co.: Pb= 20.2 +/- 4.0 ppm Chesapeake : Pb= 30.4 +/- 7.2 ppm Henry Co.: Pb= 20.9 +/- 4.5 ppm Monroe Co.: Pb= 13.1 +/- 3.0 ppm Ripley Co.: Pb= 32.6 +/- 26.6 ppm Grayson Co.: Pb= 35.8 +/- 14.6 ppm Hickman Co.: Pb= 14.6 +/- 4.4 ppm Calloway Co.: Pb= 15.2 +/- 2.8 ppm Stewart Co.: Pb= 16.8 +/- 2.1 ppm Robertson Co.: Pb= 19.0 +/- 3.3 ppm Sumner Co.: Pb= 24.5 +/- 7.9 ppm Fulton Co.: Pb= 15.5 +/- 5.4 ppm Montgomery Co.: Pb= 17.6 +/- 1.9 ppm Macon Co.: Pb= 21.0 +/- 3.9 ppm Dunklin Co.: Pb= 27.7 +/- 4.8 ppm Pickett Co.: Pb= 9.0 +/- 2.5 ppm Clay Co.: Pb= 18.6 +/- 5.4 ppm Sullivan Co.: Pb= 16.0 +/- 3.6 ppm Johnson Co.: Pb= 22.1 +/- 3.7 ppm Scott Co.: Pb= 12.7 +/- 4.4 ppm Claiborne Co.: Pb= 26.3 +/- 4.6 ppm Hancock Co.: Pb= 23.3 +/- 3.2 ppm Hawkins Co.: Pb= 21.0 +/- 4.8 ppm Campbell Co.: Pb= 20.0 +/- 2.6 ppm Ashe Co.: Pb= 21.6 +/- 3.6 ppm Fentress Co.: Pb= 6.0 +/- 2.6 ppm Alleghany Co.: Pb= 22.2 +/- 3.3 ppm Surry Co.: Pb= 21.2 +/- 4.4 ppm Gates Co.: Pb= 27.3 +/- 4.7 ppm Camden Co.: Pb= 29.4 +/- 7.9 ppm Currituck Co.: Pb= 40.6 +/- 12.9 ppm Stokes Co.: Pb= 20.1 +/- 3.5 ppm Northampton Co.: Pb= 19.7 +/- 4.9 ppm Hertford Co.: Pb= 22.6 +/- 5.5 ppm Warren Co.: Pb= 20.8 +/- 8.1 ppm Vance Co.: Pb= 37.5 +/- 7.0 ppm Rockingham Co.: Pb= 23.8 +/- 2.5 ppm Granville Co.: Pb= 23.4 +/- 3.5 ppm Person Co.: Pb= 16.6 +/- 4.0 ppm Caswell Co.: Pb= 22.3 +/- 6.3 ppm Overton Co.: Pb= 8.7 +/- 2.4 ppm Jackson Co.: Pb= 24.6 +/- 9.1 ppm Halifax Co.: Pb= 25.4 +/- 9.4 ppm Carter Co.: Pb= 22.3 +/- 8.4 ppm Obion Co.: Pb= 18.3 +/- 7.9 ppm Lake Co.: Pb= 23.3 +/- 5.0 ppm Weakley Co.: Pb= 22.9 +/- 19.8 ppm Henry Co.: Pb= 13.0 +/- 4.2 ppm Randolph Co.: Pb= 19.6 +/- 4.7 ppm Clay Co.: Pb= 24.4 +/- 7.1 ppm Sharp Co.: Pb= 21.2 +/- 8.5 ppm Trousdale Co.: Pb= 26.4 +/- 6.6 ppm Cheatham Co.: Pb= 16.2 +/- 2.8 ppm Washington Co.: Pb= 12.9 +/- 2.4 ppm Wilkes Co.: Pb= 21.1 +/- 5.1 ppm Union Co.: Pb= 24.1 +/- 2.5 ppm Pemiscot Co.: Pb= 30.1 +/- 13.5 ppm Smith Co.: Pb= 17.2 +/- 2.9 ppm Grainger Co.: Pb= 22.7 +/- 2.1 ppm Greene Co.: Pb= 17.6 +/- 4.0 ppm Davidson Co.: Pb= 18.5 +/- 4.2 ppm Watauga Co.: Pb= 21.4 +/- 3.7 ppm Perquimans Co.: Pb= 29.3 +/- 11.8 ppm Morgan Co.: Pb= 11.1 +/- 6.3 ppm Houston Co.: Pb= 13.9 +/- 2.4 ppm Benton Co.: Pb= 15.4 +/- 2.9 ppm Wilson Co.: Pb= 19.8 +/- 3.7 ppm Chowan Co.: Pb= 27.6 +/- 4.9 ppm Hamblen Co.: Pb= 22.7 +/- 3.7 ppm Dickson Co.: Pb= 13.8 +/- 1.3 ppm Putnam Co.: Pb= 9.6 +/- 2.2 ppm Anderson Co.: Pb= 21.8 +/- 2.9 ppm Yadkin Co.: Pb= 22.1 +/- 4.0 ppm Avery Co.: Pb= 17.1 +/- 5.5 ppm Greene Co.: Pb= 22.4 +/- 5.1 ppm Franklin Co.: Pb= 34.5 +/- 8.7 ppm Forsyth Co.: Pb= 37.4 +/- 9.2 ppm Unicoi Co.: Pb= 17.9 +/- 3.5 ppm Lawrence Co.: Pb= 20.3 +/- 4.8 ppm Guilford Co.: Pb= 14.3 +/- 5.9 ppm Alamance Co.: Pb= 21.2 +/- 6.5 ppm Bertie Co.: Pb= 21.5 +/- 2.5 ppm Dare Co.: Pb= 12.6 +/- 5.1 ppm Humphreys Co.: Pb= 12.2 +/- 1.4 ppm Orange Co.: Pb= 21.2 +/- 3.4 ppm Durham Co.: Pb= 19.7 +/- 2.4 ppm Gibson Co.: Pb= 13.9 +/- 4.3 ppm Dyer Co.: Pb= 17.4 +/- 3.5 ppm Nash Co.: Pb= 30.2 +/- 6.9 ppm Jefferson Co.: Pb= 16.8 +/- 1.8 ppm Knox Co.: Pb= 22.1 +/- 6.1 ppm Cocke Co.: Pb= 19.9 +/- 3.2 ppm Cumberland Co.: Pb= 9.1 +/- 3.1 ppm Mitchell Co.: Pb= 13.3 +/- 4.3 ppm Edgecombe Co.: Pb= 26.2 +/- 7.4 ppm Carroll Co.: Pb= 18.0 +/- 6.6 ppm De Kalb Co.: Pb= 14.5 +/- 2.5 ppm Caldwell Co.: Pb= 22.1 +/- 2.6 ppm Rutherford Co.: Pb= 25.5 +/- 7.0 ppm Tyrrell Co.: Pb= 18.4 +/- 6.2 ppm Yancey Co.: Pb= 22.3 +/- 4.7 ppm White Co.: Pb= 9.7 +/- 2.1 ppm Wake Co.: Pb= 26.4 +/- 11.0 ppm Martin Co.: Pb= 21.7 +/- 2.7 ppm Madison Co.: Pb= 24.9 +/- 3.5 ppm Davie Co.: Pb= 31.2 +/- 6.3 ppm Iredell Co.: Pb= 30.6 +/- 12.8 ppm Williamson Co.: Pb= 19.0 +/- 2.6 ppm Roane Co.: Pb= 16.9 +/- 3.8 ppm Alexander Co.: Pb= 21.1 +/- 2.5 ppm Sevier Co.: Pb= 17.3 +/- 2.6 ppm Washington Co.: Pb= 20.5 +/- 1.7 ppm Davidson Co.: Pb= 28.5 +/- 12.0 ppm Mississippi Co.: Pb= 22.7 +/- 8.8 ppm Crockett Co.: Pb= 18.5 +/- 2.6 ppm Burke Co.: Pb= 21.5 +/- 3.0 ppm Craighead Co.: Pb= 17.0 +/- 2.1 ppm Hickman Co.: Pb= 11.8 +/- 2.7 ppm Cannon Co.: Pb= 21.5 +/- 6.0 ppm McDowell Co.: Pb= 17.1 +/- 3.6 ppm Lauderdale Co.: Pb= 14.6 +/- 3.9 ppm Independence Co.: Pb= 14.2 +/- 4.6 ppm Randolph Co.: Pb= 16.6 +/- 3.5 ppm Loudon Co.: Pb= 33.3 +/- 12.0 ppm Jackson Co.: Pb= 14.8 +/- 2.4 ppm Blount Co.: Pb= 20.6 +/- 11.2 ppm Chatham Co.: Pb= 20.3 +/- 4.2 ppm Wilson Co.: Pb= 28.3 +/- 11.5 ppm Rowan Co.: Pb= 25.1 +/- 5.5 ppm Warren Co.: Pb= 10.8 +/- 1.6 ppm Maury Co.: Pb= 17.8 +/- 3.3 ppm Decatur Co.: Pb= 13.2 +/- 2.7 ppm Perry Co.: Pb= 13.7 +/- 2.2 ppm Pitt Co.: Pb= 19.1 +/- 3.8 ppm Catawba Co.: Pb= 21.8 +/- 3.1 ppm Rhea Co.: Pb= 15.1 +/- 4.4 ppm Henderson Co.: Pb= 12.4 +/- 1.9 ppm Buncombe Co.: Pb= 23.9 +/- 5.2 ppm Haywood Co.: Pb= 16.1 +/- 6.1 ppm Van Buren Co.: Pb= 10.6 +/- 2.6 ppm Johnston Co.: Pb= 19.5 +/- 5.7 ppm Madison Co.: Pb= 9.9 +/- 2.6 ppm Haywood Co.: Pb= 27.7 +/- 3.3 ppm Bledsoe Co.: Pb= 10.2 +/- 3.3 ppm Meigs Co.: Pb= 24.8 +/- 7.3 ppm Beaufort Co.: Pb= 20.9 +/- 5.4 ppm Marshall Co.: Pb= 21.0 +/- 2.5 ppm Poinsett Co.: Pb= 17.7 +/- 2.0 ppm Coffee Co.: Pb= 17.3 +/- 4.0 ppm Hyde Co.: Pb= 20.6 +/- 3.6 ppm Bedford Co.: Pb= 24.6 +/- 2.8 ppm Swain Co.: Pb= 18.7 +/- 3.3 ppm Monroe Co.: Pb= 18.9 +/- 4.4 ppm Lewis Co.: Pb= 12.5 +/- 3.1 ppm Tipton Co.: Pb= 16.8 +/- 2.6 ppm Greene Co.: Pb= 14.6 +/- 3.2 ppm McMinn Co.: Pb= 25.2 +/- 4.9 ppm Lee Co.: Pb= 17.1 +/- 3.0 ppm Rutherford Co.: Pb= 27.0 +/- 5.0 ppm Wayne Co.: Pb= 19.9 +/- 7.4 ppm Chester Co.: Pb= 9.7 +/- 2.8 ppm Cleveland Co.: Pb= 26.4 +/- 7.1 ppm Harnett Co.: Pb= 21.4 +/- 6.0 ppm Lincoln Co.: Pb= 25.9 +/- 4.3 ppm Sequatchie Co.: Pb= 13.8 +/- 2.9 ppm White Co.: Pb= 14.3 +/- 2.5 ppm Grundy Co.: Pb= 11.4 +/- 3.3 ppm Jackson Co.: Pb= 26.3 +/- 2.8 ppm Mecklenburg Co.: Pb= 18.7 +/- 5.3 ppm Moore Co.: Pb= 24.2 +/- 7.9 ppm Montgomery Co.: Pb= 20.0 +/- 8.6 ppm Cabarrus Co.: Pb= 14.8 +/- 6.1 ppm Stanly Co.: Pb= 22.3 +/- 7.2 ppm Henderson Co.: Pb= 20.6 +/- 2.2 ppm Wayne Co.: Pb= 13.0 +/- 4.7 ppm Graham Co.: Pb= 16.2 +/- 4.8 ppm Hamilton Co.: Pb= 29.4 +/- 18.2 ppm Lawrence Co.: Pb= 16.6 +/- 3.5 ppm Giles Co.: Pb= 25.3 +/- 5.0 ppm Cross Co.: Pb= 18.5 +/- 2.5 ppm Woodruff Co.: Pb= 16.7 +/- 1.5 ppm Crittenden Co.: Pb= 17.3 +/- 2.9 ppm Hardeman Co.: Pb= 8.9 +/- 5.4 ppm Lenoir Co.: Pb= 16.7 +/- 4.5 ppm Hardin Co.: Pb= 12.4 +/- 2.1 ppm Transylvania Co.: Pb= 23.6 +/- 3.8 ppm Gaston Co.: Pb= 30.6 +/- 6.3 ppm Craven Co.: Pb= 18.4 +/- 3.3 ppm Moore Co.: Pb= 24.7 +/- 0.9 ppm Shelby Co.: Pb= 19.7 +/- 2.3 ppm Polk Co.: Pb= 27.5 +/- 4.9 ppm Fayette Co.: Pb= 8.5 +/- 3.2 ppm McNairy Co.: Pb= 11.6 +/- 3.0 ppm Lincoln Co.: Pb= 21.2 +/- 2.1 ppm Franklin Co.: Pb= 18.7 +/- 5.8 ppm Pamlico Co.: Pb= 18.6 +/- 4.6 ppm Bradley Co.: Pb= 53.7 +/- 22.6 ppm Macon Co.: Pb= 22.0 +/- 6.2 ppm Marion Co.: Pb= 31.4 +/- 33.6 ppm Sampson Co.: Pb= 20.8 +/- 5.0 ppm Cherokee Co.: Pb= 15.5 +/- 1.9 ppm Polk Co.: Pb= 17.3 +/- 8.6 ppm Cumberland Co.: Pb= 22.5 +/- 4.9 ppm Jones Co.: Pb= 16.4 +/- 3.3 ppm Carteret Co.: Pb= 19.4 +/- 6.1 ppm Greenville Co.: Pb= 26.9 +/- 7.7 ppm Hoke Co.: Pb= 18.2 +/- 4.2 ppm Anson Co.: Pb= 27.3 +/- 6.2 ppm Union Co.: Pb= 25.4 +/- 5.6 ppm Spartanburg Co.: Pb= 32.1 +/- 8.0 ppm Duplin Co.: Pb= 17.3 +/- 3.6 ppm Cherokee Co.: Pb= 22.2 +/- 4.1 ppm Richmond Co.: Pb= 25.7 +/- 6.4 ppm York Co.: Pb= 24.4 +/- 6.2 ppm Clay Co.: Pb= 16.5 +/- 3.7 ppm St. Francis Co.: Pb= 19.1 +/- 3.6 ppm Prairie Co.: Pb= 16.1 +/- 1.5 ppm Pickens Co.: Pb= 19.8 +/- 5.0 ppm Lancaster Co.: Pb= 17.5 +/- 2.9 ppm Oconee Co.: Pb= 19.5 +/- 3.8 ppm Scotland Co.: Pb= 20.5 +/- 6.9 ppm Lauderdale Co.: Pb= 48.9 +/- 55.5 ppm Rabun Co.: Pb= 24.6 +/- 6.3 ppm Limestone Co.: Pb= 28.3 +/- 4.4 ppm Alcorn Co.: Pb= 15.3 +/- 3.6 ppm Tippah Co.: Pb= 18.4 +/- 5.9 ppm De Soto Co.: Pb= 16.8 +/- 4.3 ppm Tishomingo Co.: Pb= 17.5 +/- 3.2 ppm Marshall Co.: Pb= 14.7 +/- 3.7 ppm Benton Co.: Pb= 12.6 +/- 3.5 ppm Towns Co.: Pb= 15.4 +/- 2.7 ppm Madison Co.: Pb= 23.4 +/- 3.5 ppm Jackson Co.: Pb= 36.1 +/- 68.7 ppm Fannin Co.: Pb= 15.8 +/- 1.9 ppm Murray Co.: Pb= 18.0 +/- 3.2 ppm Whitfield Co.: Pb= 27.8 +/- 9.4 ppm Catoosa Co.: Pb= 55.4 +/- 13.5 ppm Union Co.: Pb= 20.1 +/- 2.7 ppm Walker Co.: Pb= 79.2 +/- 79.4 ppm Dade Co.: Pb= 212.0 +/- 122.8 ppm Onslow Co.: Pb= 11.2 +/- 2.1 ppm Robeson Co.: Pb= 17.3 +/- 3.7 ppm Union Co.: Pb= 35.3 +/- 3.2 ppm Colbert Co.: Pb= 22.5 +/- 17.2 ppm De Kalb Co.: Pb= 21.7 +/- 30.8 ppm Bladen Co.: Pb= 16.0 +/- 7.3 ppm Gilmer Co.: Pb= 15.9 +/- 3.6 ppm Habersham Co.: Pb= 28.1 +/- 6.1 ppm Chester Co.: Pb= 24.5 +/- 8.7 ppm Anderson Co.: Pb= 29.2 +/- 5.3 ppm Chesterfield Co.: Pb= 21.1 +/- 3.8 ppm Marlboro Co.: Pb= 19.8 +/- 7.1 ppm White Co.: Pb= 28.7 +/- 4.7 ppm Laurens Co.: Pb= 35.1 +/- 6.4 ppm Lumpkin Co.: Pb= 22.6 +/- 7.5 ppm Pender Co.: Pb= 19.5 +/- 10.3 ppm Stephens Co.: Pb= 26.9 +/- 1.9 ppm Gordon Co.: Pb= 27.1 +/- 7.3 ppm Dillon Co.: Pb= 19.1 +/- 4.2 ppm Dawson Co.: Pb= 24.7 +/- 11.4 ppm Kershaw Co.: Pb= 27.4 +/- 23.0 ppm Fairfield Co.: Pb= 26.0 +/- 7.5 ppm Franklin Co.: Pb= 24.7 +/- 5.0 ppm Darlington Co.: Pb= 25.5 +/- 11.8 ppm Newberry Co.: Pb= 38.5 +/- 11.3 ppm Hall Co.: Pb= 21.0 +/- 2.8 ppm Hart Co.: Pb= 20.6 +/- 4.6 ppm Banks Co.: Pb= 19.5 +/- 2.0 ppm Abbeville Co.: Pb= 22.1 +/- 5.8 ppm Columbus Co.: Pb= 10.4 +/- 4.7 ppm Greenwood Co.: Pb= 23.6 +/- 11.3 ppm New Hanover Co.: Pb= 82.4 +/- 55.5 ppm Brunswick Co.: Pb= 21.6 +/- 26.9 ppm Lee Co.: Pb= 51.9 +/- 119.1 ppm Florence Co.: Pb= 19.6 +/- 7.1 ppm Marion Co.: Pb= 22.3 +/- 5.3 ppm Horry Co.: Pb= 19.9 +/- 7.8 ppm Richland Co.: Pb= 18.3 +/- 5.6 ppm Garrard Co.: Pb= 27.3 +/- 2.1 ppm Woodford Co.: Pb= 78.3 +/- 23.3 ppm Pasquotank Co.: Pb= 22.3 +/- 4.7 ppm Washington Co.: Pb= 100.6 +/- 32.7 ppm

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