LOCATIONS SUBMITTING DATA FOR 1990
 
 
 
 State                          Location                           Code 
 
 
 District of Columbia           Washington Monument Grounds        DC1
 Idaho                          Post Falls                         ID2
 Illinois                       Carbondale                         IL2
 Indiana                        West Lafayette                     IN1
 Kentucky                       Lexington                          KY1 

 Maryland                       Beltsville                         UB1 
 Maryland                       Silver Spring                      MD1 
 Michigan                       East Lansing                       MI1
 Missouri                       Columbia                           MO1 
                                (mechanical wear applied Spring, Fall)
 Nebraska                       Lincoln                            NE1

 New Jersey                     North Brunswick                    NJ1
 New Jersey                     Adelphia                           NJ2 
 New York                       Ithaca                             NY1
 Ohio                           Marysville                         OH2
 Oregon                         Hubbard                            OR1 

 Oregon                         Corvallis                          OR2
 Rhode Island                   Kingston                           RI1 
 South Dakota                   Brookings                          SD1
 Virginia                       Blacksburg                         VA1