United States Department of Agriculture
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Table B1. Acres (1,000) Where the Potential Atrazine Leaching Concentration at the Bottom of the Root Zone Exceeds a Multiple of EPA's Maximum Contaminant Level (3 ppb)

NRCS Region/State Acres Treated Multiple of EPA's Maximum Contaminant Level
> 1 > 2 > 3 > 5 > 7 > 10 > 15 > 20 > 25
East Region 3,524 1,702 585 174 103 62 32 10 4 0
Connecticut 48 48 14 3 3 3 2 0 0 0
Delaware 158 139 94 66 59 38 24 9 3 0
Maine 19 5 0 0 0 0 0 0 0 0
Maryland 516 422 324 70 22 11 4 1 0 0
Massachusetts 32 32 9 3 3 2 1 0 0 0
New Hampshire 14 14 3 2 0 0 0 0 0 0
New Jersey 114 66 28 11 3 3 1 0 0 0
New York 979 247 34 11 8 4 0 0 0 0
Pennsylvania 1,464 642 64 5 2 0 0 0 0 0
Rhode Island 2 2 0 0 0 0 0 0 0 0
Vermont 91 51 7 3 2 1 0 0 0 0
West Virginia 88 36 8 1 1 0 0 0 0 0
Midwest Region 39,121 10,931 4,378 2,111 1,242 557 218 87 26 10
Illinois 10,896 2,630 1,497 408 225 82 50 31 10 7
Indiana 5,949 1,640 810 516 259 93 15 12 2 2
Iowa 9,106 1,583 161 82 30 19 1 0 0 0
Michigan 2,470 1,448 848 485 334 144 48 20 4 0
Minnesota 2,704 312 95 72 37 15 0 0 0 0
Missouri 2,736 1,265 500 311 223 88 62 14 10 2
Ohio 3,138 771 89 41 9 7 0 0 0 0
Wisconsin 2,123 1,282 379 198 124 110 41 9 0 0
Northern Plains 13,371 3,754 2,990 1,701 573 549 456 347 21 6
Colorado 506 132 59 45 5 4 0 0 0 0
Kansas 4,230 1,114 924 831 202 195 156 122 7 6
Montana 6 2 2 1 1 1 1 1 1 0
Nebraska 7,480 2,478 1,998 818 362 346 298 223 13 0
North Dakota 29 3 1 1 0 0 0 0 0 0
South Dakota 1,101 20 5 3 3 3 1 1 0 0
Wyoming 18 6 3 3 0 0 0 0 0 0
South Central 6,219 1,302 996 834 374 212 89 11 0 0
Arkansas 320 182 121 79 46 14 1 0 0 0
Louisiana 478 146 78 60 24 7 4 0 0 0
Oklahoma 277 105 45 36 12 6 1 0 0 0
Texas 5,144 868 752 660 292 185 83 11 0 0
Southeast Region 5,926 4,424 3,612 2,394 1,159 754 476 318 119 82
Alabama 306 294 250 208 182 112 47 23 20 14
Florida 114 106 104 98 97 92 78 25 16 4
Georgia 685 662 639 553 496 422 306 259 80 65
Kentucky 1,562 732 559 230 15 3 1 0 0 0
Mississippi 216 162 138 119 64 47 25 3 1 0
North Carolina 1,265 931 772 555 153 36 7 1 0 0
South Carolina 586 489 399 180 75 32 10 7 2 0
Tennessee 798 698 504 338 75 10 3 2 0 0
Virginia 393 351 249 114 4 0 0 0 0 0
West Region 150 67 46 35 20 12 9 4 4 1
Arizona 3 0 0 0 0 0 0 0 0 0
California 22 12 12 9 6 6 3 1 1 1
Hawaii 0 0 0 0 0 0 0 0 0 0
Idaho 25 6 0 0 0 0 0 0 0 0
Nevada 0 0 0 0 0 0 0 0 0 0
New Mexico 50 17 13 11 8 7 6 3 3 0
Oregon 13 8 2 2 2 0 0 0 0 0
Utah 8 0 0 0 0 0 0 0 0 0
Washington 29 23 19 12 4 0 0 0 0 0
US Total 68,309 22,180 12,609 7,249 3,470 2,146 1,279 777 173 99

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