Region
United States
163
Colorado
93
Idaho
62
California
56
Florida
54
New Jersey
47
Massachusetts
43
New York (State)
38
Pennsylvania
38
Washington (State)
36
Minnesota
35
Idaho National Laboratory Region
31
Wyoming
30
Illinois
28
Alabama
27
Maryland
27
Michigan
26
Nevada
23
Tennessee
23
South Carolina
21
Texas
21
Arizona
19
Cape Cod
19
Nebraska
18
Utah
18
Kansas
16
Snake River Plain (Idaho and Or.)
16
Montana
15
Ohio
15
Alaska
14
Iowa
14
Mississippi
13
North Carolina
13
Missouri
12
Oklahoma
12
Delaware
11
Indiana
11
Long Island
11
Suffolk County
11
Aberdeen Proving Ground
10
San Joaquin Valley
10
Connecticut
9
Georgia
9
Kentucky
9
Maine
9
New Hampshire
9
New Mexico
9
North Dakota
9
Snake River Plain Aquifer
9
Wisconsin
9
more ...