47 C.F.R. § 76.53

Current through September 30, 2024
Section 76.53 - Reference points

The following list of reference points shall be used to identify the boundaries of the major and smaller television markets (defined in § 76.5 ). Where a community's reference point is not given, the geographic coordinates of the main post office in the community shall be used.

State and community Latitude Longitude
Alabama:
Anniston33°39'49"85°49'47"
Birmingham33°31'01"86°48'36"
Decatur34°36'35"86°58'45"
Demopolis32°30'56"87°50'07"
Dothan31°13'27"85°23'35"
Dozier31°29'30"86°21'59"
Florence34°48'05"87°40'31"
Huntsville34°44'18"86°35'19"
Louisville31°47'00"85°33'09"
Mobile30°41'36"88°02'33"
Montgomery32°22'33"86°18'31"
Mount Cheaha State Park33°29'26"85°48'30"
Selma24°24'26"87°01'15"
Tuscaloosa33°12'05"87°33'44"
Alaska:
Anchorage61°13'09"149°53'29"
College64°51'22"147°48'38"
Fairbanks64°50'35"147°41'51"
Juneau58°18'06"134°25'09"
Sitka57°02'58"135°20'12"
Arizona:
Flagstaff35°11'54"111°39'02"
Mesa33°24'54"111°49'41"
Nogales31°20'14"110°56'12"
Phoenix33°27'12"112°04'28"
Tucson32°13'15"110°58'08"
Yuma32°43'16"114°37'01"
Arkansas:
El Dorado33°12'39"92°39'40"
Fayetteville36°03'41"94°09'38"
Fort Smith35°23'10"94°25'36"
Jonesboro35°50'14"90°42'11"
Little Rock34°44'42"92°16'37"
California:
Bakersfield35°22'31"119°01'16"
Chico39°44'07"121°49'57"
Concord37°58'46"122°01'51"
Corona33°52'35"117°33'56"
El Centro32°47'25"115°32'45"
Eureka40°48'08"124°09'46"
Fontana34°05'45"117°26'29"
Fresno36°44'12"119°47'11"
Guasti34°03'48"117°35'10"
Hanford36°19'51"119°38'48"
Los Angeles34°03'15"118°14'28"
Modesto37°38'26"120°59'44"
Monterey36°35'44"121°53'39"
Oakland37°48'03"122°15'54"
Palm Springs33°49'22"116°32'46"
Redding40°34'57"122°23'34"
Sacramento38°34'57"121°29'41"
Salinas36°40'24"121°39'25"
San Bernardino34°06'30"117°17'28"
San Diego32°42'53"117°09'21"
San Francisco37°46'39"122°24'40"
San Jose37°20'16"121°53'24"
San Luis Obispo35°16'49"120°39'34"
San Mateo37°34'08"122°19'16"
Santa Barbara34°25'18"119°41'55"
Santa Maria34°57'02"120°26'10"
Stockton37°57'30"121°17'16"
Tulare36°12'31"119°20'35"
Ventura34°16'47"119°17'22"
Visalia36°19'46"119°17'30"
Colorado:
Colorado Springs38°50'07"104°49'16"
Denver39°44'58"104°59'22"
Durango37°16'29"107°52'25"
Grand Junction39°04'06"108°33'54"
Montrose38°28'44"107°52'31"
Pueblo38°16'17"104°36'33"
Sterling40°37'29"103°12'25"
Connecticut:
Bridgeport41°10'49"73°11'22"
Hartford41°46'12"72°40'49"
New Britain41°40'02"72°47'08"
New Haven41°18'25"72°55'30"
Norwich41°31'36"72°04'31"
Waterbury41°33'13"73°02'31"
Delaware:
Wilmington39°44'46"75°32'51"
District of Columbia:
Washington38°53'51"77°00'33"
Florida:
Clearwater27°57'56"82°47'51"
Daytona Beach29°12'44"81°01'10"
Fort Lauderdale26°07'11"80°08'34"
Fort Myers26°38'42"81°52'06"
Fort Pierce27°26'48"80°19'38"
Gainesville29°38'56"82°19'19"
Jacksonville30°19'44"81°39'42"
Largo27°54'54"82°47'32"
Leesburg28°48'43"81°52'30"
Melbourne28°04'41"80°36'29"
Miami25°46'37"80°11'32"
Ocala29°11'34"82°08'14"
Orlando28°32'42"81°22'38"
Panama City30°09'24"85°39'47"
Pensacola30°24'51"87°12'56"
St. Petersburg27°46'18"82°38'16"
Sarasota27°20'05"82°32'29"
Tallahassee30°26'30"84°16'50"
Tampa27°56'58"82°27'26"
West Palm Beach26°42'36"80°03'05"
Georgia:
Albany31°34'36"84°09'22"
Athens33°57'34"83°22'39"
Atlanta33°45'10"84°23'37"
Augusta33°28'20"81°58'00"
Chatsworth34°46'08"84°46'10"
Cochran32°23'18"83°21'18"
Columbus32°28'07"84°59'24"
Dawson31°46'33"84°26'20"
Macon32°50'12"83°37'36"
Pelham31°07'42"84°09'02"
Savannah32°04'42"81°05'37"
Thomasville30°50'25"83°58'59"
Waycross31°12'19"82°21'47"
Wrens33°12'21"82°23'23"
Guam:
Agana13°28'23"144°45'00"
Hawaii:
Hilo19°43'42"155°05'30"
Honolulu21°18'36"157°51'48"
Wailuku20°53'21"156°30'27"
Idaho:
Boise43°37'07"116°11'58"
Idaho Falls43°29'39"112°02'28"
Lewiston46°25'05"117°01'10"
Moscow46°43'58"116°59'54"
Pocatello42°51'38"112°27'01"
Twin Falls42°33'25"114°28'21"
Illinois:
Aurora41°45'22"88°18'56"
Bloomington40°28'58"88°59'32"
Carbondale37°43'38"89°13'00"
Champaign40°07'05"88°14'48"
Chicago41°52'28"87°38'22"
Decatur39°50'37"88°57'11"
Elgin42°02'14"88°16'53"
Freeport42°17'57"89°37'07"
Harrisburg37°44'20"88°32'25"
Jacksonville39°44'03"90°13'44"
Joliet41°31'37"88°04'52"
La Salle41°19'49"89°05'44"
Moline41°30'31"90°30'49"
Mount Vernon38°18'29"88°54'26"
Olney38°43'47"88°05'00"
Peoria40°41'42"89°35'33"
Quincy39°55'59"91°24'12"
Rockford42°16'07"89°05'48"
Rock Island41°30'40"90°34'24"
Springfield39°47'58"89°38'51"
Urbana40°06'41"88°13'13"
Indiana:
Bloomington39°09'56"86°31'52"
Elkhart41°40'56"85°58'15"
Evansville37°58'20"87°34'21"
Fort Wayne41°04'21"85°08'26"
Gary41°35'59"87°20'07"
Hammond41°35'13"87°27'43"
Indianapolis39°46'07"86°09'46"
Lafayette40°25'11"86°53'39"
Marion40°33'17"85°39'49"
Muncie40°11'28"85°23'16"
Richmond39°49'49"84°53'26"
Roanoke40°57'50"85°22'30"
St. John41°27'00"87°28'13"
South Bend41°40'33"86°15'01"
Terre Haute39°28'03"87°24'26"
Vincennes38°40'52"87°31'12"
Iowa:
Ames42°01'36"93°36'44"
Cedar Rapids41°58'48"91°39'48"
Davenport41°31'24"90°34'21"
Des Moines41°35'14"93°37'00"
Dubuque42°29'55"90°40'08"
Fort Dodge42°30'12"94°11'05"
Iowa City41°39'37"91°31'52"
Mason City43°09'15"93°12'00"
Sioux City42°29'46"96°24'30"
Waterloo42°29'40"92°20'20"
Kansas:
Ensign37°38'48"100°14'00"
Garden City37°57'54"100°52'20"
Goodland39°20'53"101°42'35"
Great Bend38°22'04"98°45'58"
Hays38°52'16"99°19'57"
Hutchinson38°03'11"97°55'20"
Pittsburg37°24'50"94°42'11"
Salina38°50'36"97°36'46"
Topeka39°03'16"95°40'23"
Wichita37°41'30"97°20'16"
Kentucky:
Ashland38°28'36"82°38'23"
Bowling Green36°59'41"86°26'33"
Covington39°05'00"84°30'29"
Elizabethtown37°41'38"85°51'35"
Hazard37°14'54"83°11'31"
Lexington38°02'50"84°29'46"
Louisville38°14'47"85°45'49"
Madisonville37°19'45"87°29'54"
Morehead38°10'53"83°26'08"
Murray36°36'35"88°18'39"
Newport39°05'28"84°29'20"
Owensboro37°46'27"87°06'46"
Owenton38°32'11"84°50'16"
Paducah37°05'13"88°35'56"
Pikesville37°28'49"82°31'09"
Somerset37°05'35"84°36'17"
Louisiana:
Alexandria31°18'33"92°26'47"
Baton Rouge30°26'58"91°11'00"
Houma29°35'34"90°43'09"
Lafayette30°13'24"92°01'06"
Lake Charles30°13'45"93°12'52"
Monroe32°30'02"92°06'55"
New Orleans29°56'53"90°04'10"
Shreveport32°30'46"93°44'58"
West Monroe32°30'51"92°08'13"
Maine:
Augusta44°18'53"69°46'29"
Bangor44°48'13"68°46'18"
Calais45°11'04"67°16'43"
Orono44°53'15"68°40'12"
Poland Spring44°01'42"70°21'40"
Portland43°39'33"70°15'19"
Presque Isle46°40'57"68°00'52"
Maryland:
Baltimore39°17'26"76°36'45"
Cumberland39°39'01"78°45'45"
Hagerstown39°38'39"77°43'15"
Salisbury38°21'56"75°35'56"
Massachusetts:
Adams42°37'30"73°07'05"
Boston42°21'24"71°03'25"
Cambridge42°21'58"71°06'24"
Greenfield42°35'15"72°35'54"
New Bedford41°38'13"70°55'41"
Springfield42°06'21"72°35'32"
Worcester42°15'37"71°48'17"
Michigan:
Allen Park42°15'12"83°12'57"
Battle Creek42°18'58"85°10'48"
Bay City43°36'04"83°53'15"
Cadillac44°15'10"85°23'52"
Cheboygan45°38'38"84°28'38"
Detroit42°19'48"83°02'57"
Escanaba45°44'45"87°03'18"
Flint43°00'50"83°41'33"
Grand Rapids42°58'03"85°40'13"
Jackson42°14'43"84°24'22"
Kalamazoo42°17'29"85°35'14"
Lansing42°44'01"84°33'15"
Marquette46°32'37"87°23'43"
Mount Pleasant43°16'12"84°46'31"
Muskegon43°14'17"86°15'02"
Onondaga42°26'41"84°33'43"
Saginaw43°25'52"83°56'05"
Sault Ste. Marie46°29'58"84°20'37"
Traverse City44°45'47"85°37'25"
University Center43°33'31"83°59'09"
Minnesota:
Alexandria45°53'06"95°22'39"
Appleton45°12'00"96°01'02"
Austin43°39'57"92°58'20"
Duluth46°46'56"92°06'24"
Hibbing47°25'43"92°56'21"
Mankato44°09'49"94°00'09"
Minneapolis44°58'57"93°15'43"
Rochester44°01'21"92°28'03"
St. Cloud45°33'35"94°09'38"
St. Paul44°56'50"93°05'11"
Walker47°05'57"94°35'12"
Mississippi:
Biloxi30°23'43"88°53'08"
Bude31°27'46"90°50'34"
Columbus33°29'40"88°25'33"
Greenwood33°31'05"90°10'55"
Gulfport30°22'04"89°05'36"
Jackson32°17'56"90°11'06"
Laurel31°41'40"89°07'48"
Meridian32°21'57"88°42'02"
Oxford34°22'00"89°31'07"
State College33°27'18"88°47'13"
Tupelo34°15'26"88°42'30"
Missouri:
Cape Girardeau37°18'29"89°31'29"
Columbia38°57'03"92°19'46"
Hannibal39°42'24"91°22'45"
Jefferson City38°34'40"92°10'24"
Joplin37°05'26"94°30'50"
Kansas City39°04'56"94°35'20"
Kirksville40°11'37"92°34'58"
Poplar Bluff36°45'20"90°23'38"
St. Joseph39°45'57"94°51'02"
St. Louis38°37'45"90°12'22"
Sedalia38°42'08"93°13'26"
Springfield37°13'03"93°17'32"
Montana:
Anaconda46°07'40"112°57'12"
Billings45°47'00"108°30'04"
Butte46°01'06"112°32'11"
Glendive47°06'42"104°43'02"
Great Falls47°29'33"111°18'23"
Helena46°35'33"112°02'24"
Kalispell48°11'45"114°18'44"
Miles City46°24'34"105°50'30"
Missoula46°52'23"113°59'29"
Nebraska:
Albion41°41'23"97°59'53"
Alliance42°06'04"102°52'08"
Bassett42°35'00"99°32'10"
Grand Island40°55'33"98°20'23"
Hastings40°35'21"98°23'20"
Hayes Center40°30'36"101°01'18"
Hay Springs42°41'03"102°41'22"
Kearney40°41'58"99°04'53"
Lexington40°46'30"99°44'41"
Lincoln40°48'59"96°42'15"
McCook40°12'02"100°37'32"
Merriman42°55'07"101°42'02"
Norfolk42°01'56"97°24'42"
North Platte41°08'14"100°45'43"
Omaha41°15'42"95°56'14"
Scottsbluff41°51'40"103°39'00"
Superior40°01'12"98°04'00"
Nevada:
Elko40°50'00"115°45'41"
Henderson36°02'00"114°58'57"
Las Vegas36°10'20"115°08'37"
Reno39°31'27"119°48'40"
New Hampshire:
Berlin44°28'20"71°10'43"
Durham43°08'02"70°55'35"
Hanover43°42'03"72°17'24"
Keene42°56'02"72°16'44"
Lebanon43°38'34"72°15'12"
Littleton44°18'22"71°46'13"
Manchester42°59'28"71°27'41"
New Jersey:
Atlantic City39°21'32"74°25'53"
Burlington40°04'21"74°51'47"
Camden39°56'45"75°07'20"
Glen Ridge40°48'16"74°12'14"
Linden40°37'57"74°15'22"
Newark40°44'14"74°10'19"
New Brunswick40°29'38"74°26'49"
Paterson40°54'51"74°09'51"
Trenton40°13'16"74°45'28"
Vineland39°29'13"75°01'17"
Wildwood38°59'18"74°48'43"
New Mexico:
Albuquerque35°05'01"106°39'05"
Carlsbad32°25'09"104°13'47"
Clovis34°24'11"103°12'08"
Portales34°10'58"103°20'10"
Roswell33°23'47"104°31'26"
New York:
Albany42°39'01"73°45'01"
Binghamton42°06'03"75°54'47"
Buffalo42°52'52"78°52'21"
Carthage43°58'50"75°36'26"
Elmira42°05'26"76°48'22"
Garden City40°43'26"73°38'03"
Ithaca42°26'33"76°29'42"
Jamestown42°05'45"79°14'40"
New York40°45'06"73°59'39"
North Pole44°23'59"73°51'00"
Norwood44°45'00"75°59'39"
Oneonta42°27'21"75°03'42"
Patchogue40°45'56"73°00'42"
Plattsburgh44°42'03"73°27'07"
Riverhead40°55'06"72°39'51"
Rochester43°09'41"77°36'21"
Schenectady42°48'52"73°56'24"
Syracuse43°03'04"76°09'14"
Utica43°06'12"75°13'33"
Watertown43°58'30"75°54'48"
North Carolina:
Asheville35°35'42"82°33'26"
Chapel Hill35°54'51"79°03'11"
Charlotte35°13'44"80°50'45"
Columbia35°55'06"76°15'04"
Concord35°24'29"80°34'45"
Durham35°59'48"78°54'00"
Fayetteville35°03'12"78°52'54"
Greensboro36°04'17"79°47'25"
Greenville35°36'49"77°22'22"
Hickory35°43'54"81°20'20"
High Point35°57'14"80°00'15"
Jacksonville34°45'00"77°25'54"
Linville36°04'06"81°52'16"
New Bern35°06'33"77°02'23"
Raleigh35°46'38"78°38'21"
Washington35°32'35"77°03'16"
Wilmington34°14'14"77°56'58"
Winston-Salem36°05'52"80°14'42"
North Dakota:
Bismark46°48'23"100°47'17"
Devils Lake48°06'42"98°51'29"
Dickinson46°52'55"102°47'06"
Fargo46°52'30"96°47'18"
Minot48°14'09"101°17'38"
Pembina48°58'00"97°14'37"
Valley City46°55'31"98°00'04"
Williston48°08'47"103°36'59"
Ohio:
Akron41°05'00"81°30'44"
Athens39°19'38"82°06'09"
Bowling Green41°22'37"83°39'03"
Canton40°47'50"81°22'37"
Cincinnati39°06'07"84°30'35"
Cleveland41°29'51"81°41'50"
Columbus39°57'47"83°00'17"
Dayton39°45'32"84°11'43"
Kettering39°41'22"84°10'07"
Lima40°44'29"84°06'34"
Lorain41°27'48"82°10'23"
Marion40°35'14"83°07'36"
Newark40°03'35"82°24'15"
Oxford39°30'28"84°44'26"
Portsmouth38°44'06"82°59'39"
Springfield39°55'38"83°48'29"
Steubenville40°21'42"80°36'53"
Toledo41°39'14"83°32'39"
Youngstown41°05'57"80°39'02"
Zanesville39°56'59"82°00'56"
Oklahoma:
Ada34°46'24"96°40'36"
Ardmore34°10'18"97°07'50"
Lawton34°36'27"98°23'41"
Oklahoma City35°28'26"97°31'04"
Sayre35°17'34"99°38'23"
Tulsa36°09'12"95°59'34"
Oregon:
Coos Bay43°22'02"124°13'09"
Corvallis44°34'10"123°16'12"
Eugene44°03'16"123°05'30"
Klamath Falls42°13'32"121°46'32"
La Grande45°19'47"118°05'45"
Medford42°19'33"122°52'31"
Portland45°31'06"122°40'35"
Roseburg43°12'34"123°20'26"
Salem44°56'21"123°01'59"
Pennsylvania:
Allentown40°36'11"75°28'06"
Altoona40°30'55"78°24'03"
Bethlehem40°37'57"75°21'36"
Clearfield41°01'20"78°26'10"
Erie42°07'15"80°04'57"
Harrisburg40°15'43"76°52'59"
Hershey40°17'04"76°39'01"
Johnstown40°19'35"78°55'03"
Lancaster40°02'25"76°18'29"
Philadelphia39°56'58"75°09'21"
Pittsburgh40°26'19"80°00'00"
Reading40°20'09"75°55'40"
Scranton41°24'32"75°39'46"
Wilkes-Barre41°14'32"75°53'17"
York39°57'35"76°43'36"
Puerto Rico:
Aguadilla18°25'53"67°09'18"
Arecibo18°28'26"66°43'39"
Caguas18°13'59"66°02'06"
Fajardo18°19'35"65°39'21"
Mayaguez18°12'16"67°08'36"
Ponce18°00'51"66°36'58"
San Juan18°26'55"66°03'55"
Rhode Island:
Providence41°49'32"71°24'41"
South Carolina:
Allendale33°00'30"81°18'26"
Anderson34°30'06"82°38'54"
Charleston32°46'35"79°55'53"
Columbia34°00'02"81°02'00"
Florence34°11'49"79°46'06"
Greenville34°50'50"82°24'01"
Spartanburg34°57'03"81°56'06"
South Dakota:
Aberdeen45°27'31"98°29'03"
Brookings44°18'38"96°47'53"
Florence45°03'14"97°19'35"
Lead44°21'07"103°46'03"
Mitchell43°42'48"98°01'36"
Pierre44°22'06"100°20'57"
Rapid City44°04'52"103°13'11"
Reliance43°52'45"99°36'18"
Sioux Falls43°32'35"96°43'35"
Vermillion42°46'52"96°55'35"
Tennessee:
Chattanooga35°02'41"85°18'32"
Jackson35°36'48"88°49'15"
Johnson City36°19'04"82°20'56"
Kingsport36°32'57"82°33'44"
Knoxville35°57'39"83°55'07"
Lexington35°38'58"88°23'31"
Memphis35°08'46"90°03'13"
Nashville36°09'33"86°46'55"
Sneedville36°31'46"83°13'04"
Texas:
Abilene32°27'05"99°43'51"
Amarillo35°12'27"101°50'04"
Austin30°16'09"97°44'37"
Beaumont30°05'20"94°06'09"
Belton31°03'31"97°27'39"
Big Spring32°15'03"101°28'38"
Bryan30°38'48"96°21'31"
College Station30°37'05"96°20'41"
Corpus Christi27°47'51"97°23'45"
Dallas32°47'09"96°47'37"
El Paso31°45'36"106°29'11"
Fort Worth32°44'55"97°19'44"
Galveston29°18'10"94°47'43"
Harlingen26°11'29"97°41'35"
Houston29°45'26"95°21'37"
Laredo27°30'22"99°30'30"
Longview32°28'24"94°43'45"
Lubbock33°35'05"101°50'33"
Lufkin31°20'14"94°43'21"
Midland31°59'54"102°04'31"
Monahans31°35'16"102°53'26"
Nacogdoches31°36'13"94°39'20"
Odessa31°50'49"102°22'01"
Port Arthur29°52'09"93°56'01"
Richardson32°57'06"96°44'05"
Rosenberg29°33'30"95°48'15"
San Angelo31°27'39"100°26'03"
San Antonio29°25'37"98°29'06"
Sweetwater32°28'24"100°24'18"
Temple31°06'02"97°20'22"
Texarkana33°25'29"94°02'34"
Tyler32°21'21"95°17'52"
Victoria28°48'01"97°00'06"
Waco31°33'12"97°08'00"
Weslaco26°09'24"97°59'33"
Wichita Falls33°54'34"98°29'28"
Utah:
Logan41°44'03"111°50'11"
Ogden41°13'31"111°58'21"
Provo40°14'07"111°39'34"
Salt Lake City40°45'23"111°53'26"
Vermont:
Burlington44°28'34"73°12'46"
Rutland43°36'29"72°58'56"
St. Johnsbury44°25'16"72°01'13"
Windsor43°28'38"72°23'32"
Virginia:
Bristol36°35'48"82°11'04"
Charlottesville38°01'52"78°28'50"
Goldvein38°26'54"77°39'19"
Hampton37°01'32"76°20'32"
Harrisonburg38°27'01"78°52'07"
Lynchburg37°24'51"79°08'37"
Norfolk36°51'10"76°17'21"
Norton36°56'05"82°37'31"
Petersburg37°13'40"77°24'15"
Portsmouth36°50'12"76°17'54"
Richmond37°32'15"77°26'09"
Roanoke37°16'13"79°56'44"
Staunton38°09'02"79°04'34"
Virgin Islands:
Charlotte Amalie18°20'36"64°55'53"
Christiansted17°44'44"64°42'21"
Washington:
Bellingham48°45'02"122°28'36"
Kennewick46°12'28"119°08'32"
Lakewood Center47°07'37"122°31'15"
Pasco46°13'50"119°05'27"
Pullman46°43'42"117°10'46"
Richland46°16'36"119°16'21"
Seattle47°36'32"122°20'12"
Spokane47°39'32"117°25'33"
Tacoma47°14'59"122°26'15"
Yakima46°36'09"120°30'39"
West Virginia:
Bluefield37°15'29"81°13'20"
Charleston38°21'01"81°37'52"
Clarksburg39°16'50"80°20'38"
Grandview37°49'28"81°04'20"
Huntington38°25'12"82°26'33"
Morgantown39°37'41"79°57'28"
Oak Hill37°58'31"81°08'45"
Parkersburg39°15'57"81°33'46"
Weston39°02'19"80°28'05"
Wheeling40°04'03"80°43'20"
Wisconsin:
Eau Claire44°48'31"91°29'49"
Fond Du Lac43°46'35"88°26'52"
Green Bay44°30'48"88°00'50"
Janesville42°40'52"89°01'39"
Kenosha42°35'04"87°49'14"
La Crosse43°48'48"91°15'02"
Madison43°04'23"89°22'55"
Milwaukee43°02'19"87°54'15"
Rhinelander45°38'09"89°24'50"
Superior46°43'14"92°06'07"
Wausau44°57'30"89°37'40"
Wyoming:
Casper42°51'00"106°19'22"
Cheyenne41°08'09"104°49'07"
Rawlins41°47'23"107°14'37"
Riverton43°01'29"108°23'03"

47 C.F.R. §76.53

37 FR 3278, Feb. 12, 1972, as amended at 37 FR 13866, July 14, 1972; 51 FR 18451, May 20, 1986; 51 FR 44608, Dec. 11, 1986; 54 FR 25716, June 19, 1989; 56 FR 49707, Oct. 1, 1991