[Code of Federal Regulations]
[Title 15, Volume 3]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 15CFR946.10]

[Page 281-288]
 
                  TITLE 15--COMMERCE AND FOREIGN TRADE
 
CHAPTER IX--NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT 
                               OF COMMERCE
 
PART 946_MODERNIZATION OF THE NATIONAL WEATHER SERVICE--Table of Contents
 
Sec. 946.10  Liaison officer.

    Prior to restructuring a field office, the Responsible Meteorologist 
shall designate at least one person in the affected service area to act 
as a liaison officer for at least a 2-year period whose duties shall be:
    (a) Provide timely information regarding the activities of the NWS 
which may affect service to the community including specifically 
modernization and restructuring activities; and
    (b) Work with area users, including persons associated with general 
aviation, civil defense, emergency preparedness, and the news media, 
with respect to the provision of timely weather warnings and forecasts.

 Appendix A to Part 946--National Weather Service Modernization Criteria

    I. Modernization Criteria for Actions Not Requiring Certification

          (A) Commissioning of New Weather Observation Systems

            (1) Automated Surface Observation Systems (ASOS)

    Purpose: Successful commissioning for full operational use requires 
a demonstration, by tests and other means, that the ASOS equipment, as 
installed in the field office, meets its technical requirements; that 
the prescribed operating, maintenance, and logistic support elements are 
in place; that operations have been properly staffed with trained 
personnel and that the equipment can be operated with all other 
installed mating elements of the modernized NWS system.

    Note: It may be necessary to incorporate work-arounds to complete 
some of the items listed below in a timely and cost-effective manner. A 
work-around provides for an alternative method of meeting a 
commissioning criteria through the application of a pre-approved 
operational procedure implemented on a temporary basis, for example, by 
human augmentation of the observation for the occurrence of freezing 
rain, until such time as a freezing rain sensor has been accepted for 
operational use with ASOS. The ASOS Plan referenced below includes a 
process for recommending, approving, and documenting work arounds and 
requires that they be tracked as open items until they can be eliminated 
by implementation of the originally intended capability.

    References: The criteria and evaluation elements for commissioning 
are set forth and further detailed in the NWS-Sponsored Automated 
Surface Observing System (ASOS) Site Component Commissioning Plan (the 
ASOS Plan), more specifically in Addendum I, Appendix D of the ASOS Site 
Component Commissioning Evaluation Package (the ASOS Package).
    Criteria: a. ASOS Acceptance Test: The site component acceptance 
test, which includes objective tests to demonstrate that the ASOS, as 
installed at the given site, meets its technical specifications, has 
been successfully completed in accordance with item 1a, p. D-2 of 
Appendix D of the ASOS Package.

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    b. Sensor Siting: Sensor sitings provide representative observations 
in accordance with Appendix C of the ASOS Package, Guidance for 
Evaluating Representativeness of ASOS Observations and item 1b, p. D-2 
of Appendix D of the ASOS Package.
    c. Initialization Parameters: Initialization parameters are in 
agreement with source information provided by the ASOS Program Office, 
in accordance with item 1c, pp. D-2 & D-3 of Appendix D of the ASOS 
Package.
    d. Sensor Performance Verification: Sensor performance has been 
verified in accordance with the requirements stated in the ASOS Site 
Technical Manual and item 1d, p. D-3 of the ASOS Package.
    e. Field Modification Kits/Firmware Installed: All critical field 
modification kits and firmware for the site as required by attachments 
3a & b (pp. D-45 & D-46) or memorandum issued to the regions, have been 
installed on the ASOS in accordance with item 1e, p. D-4 of Appendix of 
the ASOS Package.
    f. Operations and Maintenance Documentation: A full set of 
operations and maintenance documentation is available in accordance with 
items 2a-h, pp. D-5 & D-6 of Appendix D of the ASOS Package.
    g. Notification of and Technical Coordination with Users: All 
affected users have been notified of the initial date for ASOS 
operations and have received a technical coordination package in 
accordance with item 2i, pp. D-6 & D-7 of Appendix D of the ASOS 
Package.
    h. Availability of Trained Operations Personnel: Adequate operations 
staff are available, training materials are available, and required 
training has been completed, per section 3.2.3.1 of the ASOS Plan, in 
accordance with items 3a-c, p. D-8 of Appendix D of the ASOS package.
    i. Maintenance Capability: Proper maintenance personnel and support 
systems and arrangements are available in accordance with items 4a-e, 
pp. D-9 & D-10 of Appendix D of the ASOS Package.
    j. Performance of Site Interfaces: The equipment can be operated in 
all of its required modes and in conjunction with all of its interfacing 
equipment per the detailed checklists of items 5a-b, pp. D-11 & D-19 of 
Appendix D of the ASOS Package.
    k. Support of Associated NWS Forecasting and Warning Services: The 
equipment provides proper support of NWS forecasting and warning 
services and archiving, including operation of all specified automatic 
and manually augmented modes per the checklist, items 6a-e, pp. D-20 to 
D-29, of Appendix D of the ASOS Package.
    l. Service Backup Capabilities: Personnel, equipment, and supporting 
services are available and capable of providing required backup readings 
and services in support of operations when primary equipment is 
inoperable in accordance with items 7a-g, pp. D-30 to D-32, of Appendix 
D of the ASOS Package.
    m. Augmentation Capabilities: Personnel are available and trained to 
provide augmentation of ASOS observations in accordance with 
augmentation procedures, items 8a-c, p. D-33 of Appendix D of the ASOS 
Package.
    n. Representativeness of Observations: Observations are 
representative of the hydrometeorological conditions of the observing 
location as determined by a period of observation of at least 60 days 
prior to commissioning in accordance with Appendix C and item 6e, pp. D-
27 to D-29 of Appendix D of the ASOS Package.

                        (2) WSR-88D Radar System

    Purpose: Successful commissioning for full operational use requires 
a demonstration, by tests and other means, that the WSR-88D radar 
system, as installed in the field office, meets its technical 
requirements; that the prescribed operating, maintenance, and logistic 
support elements are in place; that operations have been properly 
staffed with trained personnel; and that the equipment can be operated 
with all other installed mating elements of the modernized NWS system.

    Note: It may be necessary to incorporate work-arounds to complete 
some of the items listed below in a timely and cost-effective manner. A 
work-around provides for an alternative method of meeting a 
commissioning criteria through the application for a pre-approved 
operational procedure implemented on a temporary basis. The WSR-88D Plan 
referenced below includes a process for recommending, approving, and 
documenting work arounds and requires that they be tracked as open items 
until they can be eliminated by implementation of the originally 
intended capability.

    Reference: The criteria and evaluation elements for commissioning 
are set forth and further detailed in the NWS-Sponsored WSR-88D Site 
Component Commissioning Plan (the 88D Plan) and an Attachment to that 
Plan, called the WSR-88D Site Component Commissioning Evaluation Package 
(the WSR-88D Package).
    Criteria: a. WSR-88D Radar Acceptance Test: The site component 
acceptance test, which includes objective tests to demonstrate that the 
WSR-88D radar, as installed at the given site, meets its technical 
specifications, has been successfully completed in accordance with items 
1a-f, p. A-2 of Appendix A of the WSR-88D Package.
    b. Availability of Trained Operations and Maintenance Personnel: 
Adequate operations and maintenance staffs are available, training 
materials are available, and required training has been completed in 
accordance with items 2a-h, pp. A-3 & A-4 of Appendix A of the WSR-88D 
Package.

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    c. Satisfactory Operation of System Interfaces: The system can be 
operated in all of its required modes and in conjunction with all of its 
interfacing equipment in accordance with items 3a-e, p. A-5 of Appendix 
A of the WSR-88D Package.
    d. Satisfactory Support of Associated NWS Forecasting and Warning 
Services: The system provides proper support of NWS forecasting and 
warning services, including at least 96 percent availability of the 
radar coded message for a period of 30 consecutive days prior to 
commissioning in accordance with items 4a-kk, pp. A-6 to A-17 of 
Appendix A of the WSR-88D Package.
    e. Service Backup Capabilities: Service backup capabilities function 
properly when the primary system is inoperable in accordance with items 
5a-e, p. A-18 of Appendix A of the WSR-88D Package.
    f. Documentation for Operations and Maintenance: A full set of 
operations and maintenance documentation is available in accordance with 
items 6a-n, pp. A-19 to A-25 of Appendix A of the WSR-88D Package.
    g. Spare Parts and Test Equipment: A full complement of spare parts 
and test equipment is available on site in accordance with items 7a-e, 
p. A-26, of Appendix A of the WSR-88D Package.

                (B) Decommissioning an Outdated NWS Radar

    Purpose: Successful decomissioning of an old radar requires 
assurance that the existing radar is no longer needed to support 
delivery of services and products and local office operations.
    References: The criteria and evaluation elements for decommissioning 
are set forth and further detailed in the NWS-Sponsored Network and 
Local Warning Radars (Including Adjunct Equipment) Site Component 
Decommissioning Plan (the Plan), more specifically in Appendix B to that 
Plan, called the Site Component Decommissioning Evaluating Package, and 
in Section 3.3 of the Internal and External Communication and 
Coordination Plan for the Modernization and Associated Restructuring of 
the Weather Service.
    Criteria: a. Replacing WSR-88D(s) Commissioning/User Service 
Confirmation: The replacing WSR-88D(s) have been commissioned and user 
confirmation of services has been successfully completed, i.e., all 
valid user complaints related to actual system performance have been 
satisfactorily resolved, in accordance with items 1a-c, p. B-10 of 
Appendix B of the Plan.
    b. Operation Not Dependent on Existing Radar: The outdated radar is 
not required for service coverage, in accordance with items 2a-c, p. B-
11 of Appendix B of the Plan.
    c. Notification of Users: Adequate notification of users has been 
provided, in accordance with items 3a-f, pp. B-12 & B-13 of Appendix B 
of the Plan.
    d. Disposal of Existing Radar: Preparations for disposal of the old 
existing radar have been completed, in accordance with items 4a-d, pp. 
B-14 & B-15 of Appendix B of the Plan.

    (C) Evaluating Staffing Needs for Field Offices in Affected Areas

    References: The criteria and evaluation elements are set forth and 
further detailed in the ASOS and WSR-88D Evaluation Packages and in the 
Human Resources and Position Management Plan for the National Weather 
Service Modernization and Associated Restructuring (the Human Resources 
Plan).
    Criteria: 1. Availability of Trained Operations and Maintenance 
Personnel at a NEXRAD Weather Service Forecast Office or NEXRAD Weather 
Service Office: Adequate operations and maintenance staffs are available 
to commission a WSR-88D, specifically criterion b. set forth in section 
I.A.2. of this Appendix which includes meeting the Stage 1 staffing 
levels set forth in chapter 3 of the Human Resources Plan.
    2. Availability of Trained Operations and Maintenance Personnel at 
any field office receiving an ASOS: Adequate operations and maintenance 
staff are available to meet the requirements for commissioning an ASOS, 
specifically criteria h and i set forth in section I.A.1 of this 
Appendix.

     II. Criteria for Modernization Actions Requiring Certification

(A) Modernization Criteria Common to all Types of Certifications (Except 
                                as Noted)

    1. Notification: Advanced notification and the expected date of the 
proposed certification have been provided in the National Implementation 
Plan.
    2. Local Weather Characteristics and Weather Related Concerns: A 
description of local weather characteristics and weather related 
concerns which affect the weather services provided to the affected 
service area is provided.
    3. Comparison of Services: A comparison of services before and after 
the proposed action demonstrates that all services currently provided to 
the affected service area will continue to be provided with no 
degradation of services.
    4. Recent or Excepted Modernization of NWS Operations in the 
Affected Service Area: A description of recent or expected modernization 
of NWS operations in the affected service area is provided.
    5. NEXRAD Network Coverage: NEXRAD network coverage or gaps in 
coverage at 10,000 feet over the affected service area are identified.

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    6. Air Safety Appraisal (applies only to relocation and closure of 
field offices at an airport): Verification that there will be no 
degradation of service that affects aircraft safety has been made by 
conducting an air safety appraisal in consultation with the Federal 
Aviation Administration.
    7. Evaluation of Services to In-state Users (applies only to 
relocation and closure of the only field office in a state): 
Verification that there will be no degradation of weather services 
provided to the state has been made by evaluating the effect on weather 
services provided to in-State users.
    8. Liaison Officer: Arrangements have been made to retain a Liaison 
Officer in the affected service area for at least two years to provide 
timely information regarding the activities of the NWS which may affect 
service to the community, including modernization and restructuring; and 
to work with area weather service users, including persons associated 
with general aviation, civil defense, emergency preparedness, and the 
news media, with respect to the provision of timely weather warnings and 
forecasts.
    9. Meteorologist-In-Charge's (MIC) Recommendation to Certify: The 
MIC of the future WFO that will have responsibility for the affected 
service area has recommended certification in accordance with 15 CFR 
946.7(a).
    10. Regional Director's Certification: The cognizant Regional 
Director has approved the MIC's recommended certification of no 
degradation of service to the affected service area in accordance with 
15 CFR 946.8.

    (B) Modernization Criteria Unique to Consolidation Certifications

    1. WSR-88D Commissioning: All necessary WSR-88D radars have been 
successfully commissioned in accordance with the criteria set forth in 
section I.A.2. of this Appendix.
    2. User Confirmation of Services: All valid user complaints related 
to actual system performance have been satisfactorily resolved in 
accordance with section 3.3 of the Internal and External Communication 
and Coordination Plan for the Modernization and Associated Restructuring 
of the National Weather Service.
    3. Decommissioning of Existing Radar: The existing radar, if any, 
has been successfully decommissioned in accordance with the criteria set 
forth in section I.B. of this Appendix.

     (C) Modernization Criteria Unique to Relocation Certifications

    1. Approval of Proposed Relocation Checklist: The cognizant regional 
director has approved a proposed relocation checklist setting forth the 
necessary elements in the relocation process to assure that all affected 
users will be given advanced notification of the relocation, that 
delivery of NWS services and products will not be interrupted during the 
office relocation, and that the office to be relocated will resume full 
operation at the new facility expeditiously so as to minimize the 
service backup period.
    Specific Elements: a. Notification of and Technical Coordination 
with Users: The proposed relocation checklist provides for the 
notification of and technical coordination with all affected users.
    b. Identification and Preparation of Backup Sites: The proposed 
relocation checklist identifies the necessary backup sites and the steps 
necessary to prepare to use backup sites to ensure service coverage 
during the move and checkout period.
    c. Start of Service Backup: The proposed relocation checklist 
provides for invocation of service backup by designated sites prior to 
office relocation.
    d. Systems, Furniture and Communications: The proposed relocation 
checklist identifies the steps necessary to move all systems and 
furniture to the new facility and to install communications at the new 
facility.
    e. Installation and Checkout: The proposed relocation checklist 
identifies all steps to install and checkout systems and furniture and 
to connect to communications at the new facility.
    f. Validation of Systems Operability and Service Delivery: The 
proposed relocation checklist provides for validation of system 
operability and service delivery from the new facility.
    2. Publishing of the Proposed Relocation Checklist and Evidence form 
Completed Moves: The proposed relocation checklist and the evidence from 
other similar office moves that have been completed, have been published 
in the Federal Register for public comment. The evidence from the other 
office moves indicates that they have been successfully completed.
    3. Resolution of Public Comments Received: All responsive public 
comments received from publication, in the Federal Register, of the 
checklists and of the evidence from completed moves are satisfactorily 
answered.

     (D) Modernization Criteria Unique to Automation Certifications

    1. Compliance with flight aviation rules (applies on airports only): 
Consultation with the Federal Aviation Administration (FAA) has verified 
that the weather services provided after the commissioning of the 
relevant ASOS unit(s) will be in full compliance with applicable Federal 
Aviation Regulations promulgated by the FAA.
    2. ASOS Commissioning: The relevant ASOS unit(s) have been 
successfully commissioned in accordance with the criteria set forth in 
section I.A.1 of Appendix A to the

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Weather Service Modernization Regulations, 15 CFR part 946.
    3. User Confirmation of Services: Any valid user complaints related 
to actual system performance received since commissioning of the ASOS 
have been satisfactorily resolved and the issues addressed in the MIC's 
recommendation for certification.
    4. Aviation Observation Requirement: At sites subject to automation 
certification, all surface observations and reports required for 
aviation services can be generated by an ASOS augmented as necessary by 
non-NWS personnel.
    a. The ASOS observation will be augmented/backed-up to the level 
specified in Appendix B as described in the Summary Chart of the FAA's 
Weather Observation Service Standards.
    b. The transition checklist has been signed by the appropriate 
Region Systems Operations Division Chief (applies to service level A, B 
and C airports only).
    c. Thunderstorm occurrence is reported in the ASOS observation 
through the use of a lightning sensor (applies to service level D 
airports only, excluding Homer, Alaska).
    d. Freezing rain occurrence is reported in the ASOS observation 
through the use of a freezing rain sensor. Among service level D 
airports, this criterion is not applicable to Ely, Nevada and Lander, 
Wyoming.
    5. Pilot Education and Outreach Completed: The Air Safety Foundation 
has conducted a pilot education and outreach effort to educate pilots on 
the use of automated observations and measure their understanding and 
acceptance of automated observing systems, and the MTC has had an 
opportunity to review the results of this effort (applies to service 
level D airports only).
    6. General Surface Observation Requirement: The total observations 
available are adequate to support the required inventory of services to 
users in the affected area. All necessary hydrometeorological data and 
information are available through ASOS as augmented in accordance with 
this section, through those elements reported as supplementary data by 
the relevant Weather Forecast Office(s), or through other complementary 
sources. The adequacy of the total surface observation is addressed in 
the MTC's recommendation for certification.

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[GRAPHIC] [TIFF OMITTED] TR21JY97.000

       (E) Modernization Criteria Unique to Closure Certifications

    1. Consolidation Certification: If the field office proposed for 
closure has or will be consolidated, as defined in Sec. 946.2 of the 
basic modernization regulations, this action has been completed as 
evidenced by the approved

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certification or can be completed as evidenced by all of the 
documentation that all of the requirements of sections II.A. and II.B of 
this Annex have been completed.
    2. Automation Certification: If the field office proposed for 
closure has or will be automated, as defined in Sec. 946.2 of the basic 
modernization regulations, this action has been completed as evidenced 
by the approved certification or can be completed as evidenced by 
documentation that all of the requirements of sections II.A. and II.C. 
of this Annex has been completed.
    3. Remaining Services and/or Observations: All remaining service 
and/or observational responsibilities, if applicable to the field office 
proposed for closure, have been transmitted as addressed in the MIC's 
recommendation for certification.
    4. User Confirmation of Services: Any valid user complaints received 
related to provision of weather services have been satisfactorily 
resolved and the issues addressed in the MIC's recommendation for 
certification.
    5. Warning and Forecast Verification: Warning and forecast 
verification statistics, produced in accordance with the Closure 
Certification Verification Plan, have been utilized in support of the 
MIC's recommendation for certification.

[59 FR 9923, Mar. 2, 1994 as amended at 61 FR 39865, July 31, 1996; 61 
FR 53311, Oct. 11, 1996; 62 FR 38903, July 21, 1997]

                 Appendix B to Part 946--Airport Tables

------------------------------------------------------------------------

------------------------------------------------------------------------
``A'' Level Service Airports:
  *Akron, OH..................................  CAK
  *Albany, NY.................................  ALB
  *Atlanta, GA................................  ATL
  *Baltimore, MD..............................  BWI
  *Boston, MA.................................  BOS
  Charlotte, NC...............................  CLT
  *Chicago-O'Hare (AV), IL....................  ORD
  Cincinnati, OH..............................  CVG
  Columbus, OH................................  CMH
  *Dayton, OH.................................  DAY
  *Des Moines, IA.............................  DSM
  *Detroit, MI................................  DTW
  *Fairbanks, AK..............................  FAI
  *Fresno, CA.................................  FAT
  *Greensboro, NC.............................  GSO
  *Hartford, CT...............................  BDL
  Indianapolis, IN............................  IND
  *Kansas City, MO............................  MCI
  *Lansing, MI................................  LAN
  Las Vegas, NV...............................  LAS
  Los Angeles (AV), CA........................  LAX
  *Louisville, KY.............................  SDF
  *Milwaukee, WI..............................  MKE
  *Minneapolis, MN............................  MSP
  *Newark, NJ.................................  EWR
  *Oklahoma City, OK..........................  OKC
  Phoenix, AZ.................................  PHX
  *Portland, OR...............................  PDX
  *Providence, RI.............................  PVD
  *Raleigh, NC................................  RDU
  *Richmoind, VA..............................  RIC
  *Rochester, NY..............................  ROC
  *Rockford, IL...............................  RFD
  *San Antonio, TX............................  SAT
  San Diego, CA...............................  SAN
  *San Francisco, CA..........................  SFO
  *Spokane, WA................................  GEG
  *Syracuse, NY...............................  SYR
  Tallahassee, FL.............................  TUL
  Tulsa, OK...................................  TUL
``B'' Level Service Airports:
  *Baton Rouge, LA............................  BTR
  *Billings, MT...............................  BIL
  *Charleston, WV.............................  CRW
  *Chattanooga, TN............................  CHA
  Colorado Springs, CO........................  COS
  Daytona Beach, FL...........................  DAB
  El Paso, TX.................................  ELP
  Flint, MI...................................  FNT
  Fort Wayne, IN..............................  FWA
  Honolulu, HI................................  HNL
  *Huntsville, AL.............................  HSV
  *Knoxville, TN..............................  TYS
  *Lincoln, NE................................  LNK
  Lubbock, TX.................................  LBB
  *Madison, WI................................  MSN
  *Moline, IL.................................  MLI
  *Montgomery, AL.............................  MGM
  *Muskegon, MI...............................  MKG
  *Norfolk, VA................................  ORF
  Peoria, IL..................................  PIA
  *Savannah, GA...............................  SAV
  *South Bend, IN.............................  SBN
  Tucson, AZ..................................  TUS
  *West Palm Beach, FL........................  PBI
  *Youngstown, OH.............................  YNG
``C'' Level Service Airports:
  Abilene, TX.................................  ABI
  Allentown, PA...............................  ABE
  Asheville, NC...............................  AVL
  Athens, GA..................................  AHN
  Atlantic City, NJ...........................  ACY
  Augusta, GA.................................  AGS
  Austin, TX..................................  AUS
  Bakersfield, CA.............................  BFL
  Bridgeport, CT..............................  BDR
  Bristol, TN.................................  TRI
  Casper, WY..................................  CPR
  Columbia, MO................................  COU
  Columbus, GA................................  CSG
  Dubuque, IA.................................  DBQ
  Elkins, WV..................................  EKN
  Erie, PA....................................  ERI
  Eugene, OR..................................  EUG
  Evansville, IN..............................  EVV
  Fargo, ND...................................  FAR
  Fort Smith, AR..............................  FSM
  Grand Island, NE............................  GRI
  Helena, MT..................................  HLN
  Huntington, WV..............................  HTS
  Huron, SD...................................  HON
  Kahului, HI.................................  OGG
  Key West, FL................................  EYW
  Lewiston, ID................................  LWS
  Lexington, KY...............................  LEX

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  Lynchburg, VA...............................  LYH
  Macon, GA...................................  MCN
  Mansfield, OH...............................  MFD
  Meridian, MS................................  MEI
  Olympia, WA.................................  OLM
  Port Arthur, TX.............................  BPT
  Portland, ME................................  PWM
  Rapid City, SD..............................  RAP
  Redding, CA.................................  RDD
  Reno, NV....................................  RNO
  Roanoke, VA.................................  ROA
  Rochester, MN...............................  RST
  Salem, OR...................................  SLE
  Santa Maria, CA.............................  SMX
  Sioux City, IA..............................  SUX
  Springfield, IL.............................  SPI
  Stockton, CA................................  SCK
  Toledo, OH..................................  TOL
  Waco, TX....................................  ACT
  Waterloo, IA................................  ALO
  Wilkes-Barre, PA............................  AVP
  Williamsport, PA............................  IPT
  Wilmington, DE..............................  ILG
  Worcester, MA...............................  ORH
  Yakima, WA..................................  YKM
``D'' Level Service Airports:
  Alamosa, CO.................................  ALS
  Alpena, MI..................................  APN
  Astoria, OR.................................  AST
  Beckley, WV.................................  BKW
  Caribou, ME.................................  CAR
  Concordia, KS...............................  CNK
  Concord, NH.................................  CON
  Ely, NV.....................................  ELY
  Havre, MT...................................  HVR
  Homer, AK...................................  HOM
  Houghton Lake, MI...........................  HTL
  International Falls, MN.....................  INL
  Kalispell, MT...............................  FCA
  Lander, WY..................................  LND
  Norfolk, NE.................................  OFK
  Sault Ste. Marie, MI........................  SSM
  Scottsbluff, NE.............................  BFF
  Sheridan, WY................................  SHR
  St. Cloud, MN...............................  STC
  Tupelo, MS..................................  TUP
  Valentine, NE...............................  VTN
  Victoria, TX................................  VCT
  Wichita, Falls, TX..........................  SPS
  Williston, ND...............................  ISN
  Winnemucca, NV..............................  WMC
------------------------------------------------------------------------
* Long-line RVR designated site.


[62 FR 38905, July 21, 1997]

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