1
 --0001 **********************************************************************
 --0001  SSN         -  0001
 --0001  DESIGNATION -  FLAGPOLE                                          
 --0001  PID         -  HV8181
 --0001  STATE/COUNTY-  VA/CAROLINE                 
 --0001  COUNTRY     -  US
 --0001  USGS QUAD   -  RAPPAHANNOCK ACADEMY
 --0001
 --0001                         *CURRENT SURVEY CONTROL
 --0001  ______________________________________________________________________
 --0001* NAD 83((198) POSITION- 38 12 06.20   (N) 077 22 28.69   (W)   HD_HELD1
 --0001* NAVD 88 ORTHO HEIGHT -    67.542  (meters)     221.59  (feet) ADJUSTED
 --0001  ______________________________________________________________________
 --0001  GEOID HEIGHT    -        -32.57  (meters)                     GEOID12
 --0001  DYNAMIC HEIGHT  -         67.501 (meters)      221.46  (feet) COMP
 --0001  MODELED GRAVITY -    980,023.3   (mgal)                       NAVD 88
 --0001
 --0001  VERT ORDER      -  FIRST CLASS I
 --0001
 --0001
 --0001.Warning - This is a preliminary description created by Windesc!
 --0001
 --0001.The horizontal coordinates were established by differentially corrected
 --0001.hand held GPS obs and have an estimated accuracy of +/- 3 meters.
 --0001
 --0001.The orthometric height was determined by differential leveling and.
 --0001
 --0001.The geoid height was determined by GEOID12.
 --0001
 --0001.The dynamic height is computed by dividing the NAVD 88
 --0001.geopotential number by the normal gravity value computed on the
 --0001.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 --0001.degrees latitude (g = 980.6199 gals.).
 --0001
 --0001.The modeled gravity was interpolated from observed gravity values.
 --0001
 --0001;                    North         East    Units  Estimated Accuracy
 --0001;SPC VA N     - 2,059,994.    3,598,567.      MT  (+/- 3 meters HH1 GPS)
 --0001
 --0001                          SUPERSEDED SURVEY CONTROL
 --0001
 --0001.Superseded survey control exists for this station but is not shown.
 --0001
 --0001
 --0001.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 --0001.See file dsdata.txt to determine how the superseded data were derived.
 --0001
 --0001_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9207230862(NAD 83)
 --0001
 --0001_MARKER: F  = FLANGE-ENCASED ROD
 --0001_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10FT+ OR 3.048M+)
 --0001_STAMPING: FLAGPOLE 1982                                     
 --0001_MARK LOGO: NGS   
 --0001_MAGNETIC: N = NO MAGNETIC MATERIAL
 --0001_PROJECTION: RECESSED 4 CENTIMETERS
 --0001_STABILITY: B = PROBABLY HOLD POSTION/ELEVATION WELL
 --0001_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 --0001+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2013
 --0001
 --0001  HISTORY     - Date     Condition        Report By
 --0001  HISTORY     - 1982     MONUMENTED       NGS   
 --0001  HISTORY     - 19910819 GOOD             NGS   
 --0001  HISTORY     - 19920824 GOOD             NGS   
 --0001  HISTORY     - 19940815 GOOD             NGS   
 --0001  HISTORY     - 19990210 GOOD             USPSQD
 --0001  HISTORY     - 20020116 GOOD             USPSQD
 --0001  HISTORY     - 20050928 GOOD             VADOT 
 --0001  HISTORY     - 20070926 GOOD             VADOT 
 --0001  HISTORY     - 20081119 GOOD             NGS   
 --0001  HISTORY     - 20100420 GOOD             NGS   
 --0001  HISTORY     - 20130320 GOOD             NGS   
 --0001
 --0001                          STATION DESCRIPTION
 --0001
 --0001'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982
 --0001'0.6 KM (0.35 MI) EAST ALOG COUNTY ROUTE 610 FROM THE JUNCTION WITH
 --0001'STATE ROUTE 2, JUST SOUTH OF THE POST OFFICE IN CORBIN, TO A FORK,
 --0001'THENCE0.6 KM (0.35 MI) EAST ALONG BURMA ROAD TO THE MARK ON THE
 --0001'GROUNDS OF THE DEPARTMENT OF INTERIOR, FREDERICKSBURG GEOMAGNETIC
 --0001'CENTER.  53.6 METERS NORTH FROM THE CENTER OF BURMA ROAD,
 --0001'24.5 METERS SOUTHWEST FROM A POWERLINE POLE, 1.11 METERS SOUTH FROM
 --0001'A STEEL FLAG POLE. 
 --0001' 
 --0001                          STATION RECOVERY (1991)
 --0001
 --0001'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 --0001'RECOVERED IN GOOD CONDITION. 
 --0001' 
 --0001                          STATION RECOVERY (1992)
 --0001
 --0001'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 --0001'MARK IS LOCATED AT THE U.S.G.S. FREDERICKSBURG GEOMAGNETIC CENTER,
 --0001'LOCATED ABOUT 16.1 KM (10.0 MI) NORTH OF BOWLING GREEN, 14.0 KM
 --0001'(8.7 MI) SOUTH-SOUTHEAST OF FREDERICKSBURG AND 1.2 KM (0.7 MI) EAST
 --0001'OF CORBIN.  TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 17 SOUTH
 --0001'BYPASS AND STATE HIGHWAY 2, LOCATED ABOUT 9.7 KM (6.0 MI)
 --0001'SOUTH-SOUTHEAST OF FREDERICKSBURG, GO SOUTHERLY ON STATE HIGHWAY
 --0001'2 FOR 4.0 KM (2.5 MI) TO THE INTERSECTION OF COUNTY ROAD
 --0001'610 (PEPMEIER HILL ROAD) ON THE LEFT IN THE SMALL COMMUNITY OF
 --0001'CORBIN.  TURN LEFT AND GO EASTERLY ON COUNTY ROAD 610 FOR 0.7 KM
 --0001'(0.4 MI) TO A Y-JUNCTION WHERE COUNTY ROAD 610 MAKES A SHARP TURN TO
 --0001'THE LEFT AND A SECONDARY ROAD (BURMA ROAD) CONTINUES STRAIGHT AHEAD
 --0001'INTO THE GROUNDS OF THE FREDERICKSBURG GEOMAGNETIC CENTER.  CONTINUE
 --0001'EASTERLY ON BURMA ROAD (U.S. PROPERTY) FOR 0.5 KM (0.3 MI) TO A
 --0001'CIRCLE DRIVEWAY ON THE LEFT.  TURN LEFT AND GO NORTH CURVING TO EAST
 --0001'ON THE DRIVEWAY FOR APPROXIMATELY 135 M (442.9 FT) TO THE MARK ON
 --0001'THE RIGHT BY THE STEEL FLAGPOLE.  MARK IS A PUNCH MARK IN THE TOP OF
 --0001'A STAINLESS STEEL ROD DRIVEN TO REFUSAL (DEPTH UNKNOWN), WITHIN A
 --0001'GREASE-FILLED SLEEVE. THE MARK IS RECESSED 5 CM (2 IN) BELOW THE
 --0001'LOGO CAP, WHICH IS FLUSH WITH GROUND SURFACE.  THE MARK IS 53.8 M
 --0001'(176.5 FT) NORTH OF THE CENTER OF BURMA ROAD, 31.0 M (101.7 FT)
 --0001'SOUTHWEST OF THE SOUTHEASTERNMOST CORNER OF THE OFFICE/MACHINE SHOP
 --0001'FOR N.G.S. INSTRUMENT AND EQUIPMENT SECTION, 26.8 M (87.9 FT) WEST
 --0001'OF A 41 CM (16 IN) DIAMETER WHITE PINE, 26.1 M (85.6 FT) EAST OF A
 --0001'43 CM (17 IN) DIAMETER WHITE PINE AND 1.0 M (3.3 FT) SOUTH OF A
 --0001'STEEL FLAGPOLE. 
 --0001' 
 --0001                          STATION RECOVERY (1994)
 --0001
 --0001'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (LBG)
 --0001'MARK IS LOCATED AT THE U.S.G.S. FREDERICKSBURG GEOMAGNETIC CENTER,
 --0001'LOCATED ABOUT 16.1 KM (10.00 MI) NORTH OF BOWLING GREEN, 14.0 KM
 --0001'(8.70 MI) SOUTH-SOUTHEAST OF FREDERICKSBURG AND 1.2 KM (0.75 MI)
 --0001'EAST OF CORBIN.  TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY
 --0001'17 SOUTH BYPASS AND STATE HIGHWAY 2, LOCATED ABOUT 9.7 KM (6.00 MI)
 --0001'SOUTH-SOUTHEAST OF FREDERICKSBURG, GO SOUTHERLY ON STATE HIGHWAY
 --0001'2 FOR 4.0 KM (2.50 MI) TO THE INTERSECTION OF STATE ROAD
 --0001'610 (PEPMEIER HILL ROAD) ON THE LEFT IN THE SMALL COMMUNITY OF
 --0001'CORBIN.  TURN LEFT AND GO EASTERLY ON STATE ROAD 610 FOR 0.7 KM
 --0001'(0.45 MI) TO A Y-JUNCTION WHERE STATE ROAD 610 MAKES A SHARP TURN TO
 --0001'THE LEFT AND A SECONDARY ROAD (OBSERVATORY ROAD) CONTINUES STRAIGHT
 --0001'AHEAD INTO THE GROUNDS OF THE FREDERICKSBURG GEOMAGNETIC CENTER. 
 --0001'CONTINUE EASTERLY ON OBSERVATORY ROAD (U.S. PROPERTY) FOR 0.5 KM
 --0001'(0.30 MI) TO A CIRCLE DRIVEWAY ON THE LEFT.  TURN LEFT AND GO NORTH
 --0001'CURVING TO EAST ON THE DRIVEWAY FOR APPROXIMATELY 135 M (442.9 FT)
 --0001'TO THE MARK ON THE RIGHT BY THE STEEL FLAGPOLE.  MARK IS A PUNCH
 --0001'MARK IN THE TOP OF A STAINLESS STEEL ROD DRIVEN TO REFUSAL (DEPTH
 --0001'UNKNOWN), WITHIN A GREASE-FILLED SLEEVE. THE MARK IS RECESSED 5 CM
 --0001'(2 IN) BELOW THE LOGO CAP, WHICH IS FLUSH WITH GROUND SURFACE.  THE
 --0001'MARK IS 53.8 M (176.5 FT) NORTH OF THE CENTER OF OBSERVATORY ROAD,
 --0001'31.0 M (101.7 FT) SOUTHWEST OF THE SOUTHEASTERNMOST CORNER OF THE
 --0001'OFFICE/MACHINE SHOP (BUILDING 1) FOR N.G.S. INSTRUMENT AND EQUIPMENT
 --0001'SECTION, 26.8 M (87.9 FT) WEST OF A 41 CM (16 IN) DIAMETER WHITE
 --0001'PINE, 26.1 M (85.6 FT) EAST OF A 43 CM (17 IN)DIAMETER WHITE PINE
 --0001'AND 1.0 M (3.3 FT) SOUTH OF A STEEL FLAGPOLE. 
 --0001' 
 --0001                          STATION RECOVERY (1999)
 --0001
 --0001'RECOVERY NOTE BY US POWER SQUADRON 1999
 --0001'RECOVERED IN GOOD CONDITION. 
 --0001' 
 --0001                          STATION RECOVERY (2002)
 --0001
 --0001'RECOVERY NOTE BY US POWER SQUADRON 2002 (EEC)
 --0001'RECOVERED IN GOOD CONDITION. 
 --0001' 
 --0001                          STATION RECOVERY (2005)
 --0001
 --0001'RECOVERY NOTE BY VIRGINIA DEPARTMENT OF TRANSPORTATION 2005 (JCA)
 --0001'RECOVERED IN GOOD CONDITION. 
 --0001' 
 --0001                          STATION RECOVERY (2007)
 --0001
 --0001'RECOVERY NOTE BY VIRGINIA DEPARTMENT OF TRANSPORTATION 2007 (JCA)
 --0001'RECOVERED IN GOOD CONDITION. 
 --0001' 
 --0001                          STATION RECOVERY (2008)
 --0001
 --0001'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (KLF)
 --0001'RECOVERED AS DESCRIBED. 
 --0001' 
 --0001                          STATION RECOVERY (2010)
 --0001
 --0001'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (KLF)
 --0001'RECOVERED AS DESCRIBED.
 --0001
 --0001                          STATION RECOVERY (2013)
 --0001
 --0001'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY (KLF)
 --0001'THE STATION IS LOCATED ABOUT 6.4 MI (10.3 KM) NORTH-NORTHEAST OF
 --0001'WOODFORD, 5.3 MI (8.5 KM) NORTHEAST OF GUINEA AND 0.8 MI (1.3 KM)
 --0001'EAST-NORTHEAST OF CORBIN.  OWNERSHIP--U.S. GOVERNMENT.
 --0001' 
 --0001'TO REACH FROM THE INTERSECTION OF US 17 AND VA 2, GO SOUTH ON VA
 --0001'2 FOR 2.5 MI (4.0 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO
 --0001'1.6 MI (2.6 KM) TO THE MARK ON THE LEFT.
 --0001' 
 --0001'IT IS 205.6 FT (62.7 M) NORTHEAST OF A TELEPHONE PEDESTAL WITH
 --0001'VAULT, 174.0 FT (53.0 M) NORTH OF OBSERVATORY ROAD, 124.5 FT
 --0001'(37.9 M) SOUTHEAST OF THE SOUTHWEST CORNER OF THE ADMINISTRATION
 --0001'BUILDING, 80.2 FT (24.4 M) SOUTHWEST OF A POWER POLE WITH THREE
 --0001'TRANSFORMERS AND STREET LIGHT NUMBER 17 AND 3.6 FT (1.1 M) SOUTH OF
 --0001'A FLAG POLE.
1
 --0002 **********************************************************************
 --0002  SSN         -  0002
 --0002  DESIGNATION -  CORBIN QUAD 1                                     
 --0002  PID         -  HV8180
 --0002  STATE/COUNTY-  VA/CAROLINE                 
 --0002  COUNTRY     -  US
 --0002  USGS QUAD   -  GUINEA (1966)
 --0002
 --0002                         *CURRENT SURVEY CONTROL
 --0002  ______________________________________________________________________
 --0002* NAD 83((199) POSITION- 38 12 08.57815(N) 077 22 28.45549(W)   ADJUSTED
 --0002* NAVD 88 ORTHO HEIGHT -    66.363  (meters)     217.73  (feet) ADJUSTED
 --0002  ______________________________________________________________________
 --0002  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC12
 --0002  GEOID HEIGHT    -        -32.57  (meters)                     GEOID12
 --0002  DYNAMIC HEIGHT  -         66.323 (meters)      217.59  (feet) COMP
 --0002  MODELED GRAVITY -    980,023.3   (mgal)                       NAVD 88
 --0002
 --0002  HORZ ORDER      -  THIRD
 --0002  VERT ORDER      -  FIRST CLASS I
 --0002
 --0002
 --0002.Warning - This is a preliminary description created by Windesc!
 --0002
 --0002.The horizontal coordinates were established by classical geodetic methods
 --0002.and adjusted by the National Geodetic Survey in November 1994.
 --0002
 --0002.The orthometric height was determined by differential leveling and.
 --0002
 --0002.The Laplace correction was computed from DEFLEC12 derived deflections.
 --0002
 --0002.The geoid height was determined by GEOID12.
 --0002
 --0002.The dynamic height is computed by dividing the NAVD 88
 --0002.geopotential number by the normal gravity value computed on the
 --0002.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 --0002.degrees latitude (g = 980.6199 gals.).
 --0002
 --0002.The modeled gravity was interpolated from observed gravity values.
 --0002
 --0002;                    North         East     Units Scale Factor Converg.
 --0002;SPC VA N     - 2,060,067.495 3,598,571.941   MT  0.99997447   +0 42 08.6
 --0002;SPC VA N     - 6,758,738.106 11,806,314.775 sFT  0.99997447   +0 42 08.6
 --0002;UTM  18      - 4,230,935.642   292,079.132   MT  1.00013245   -1 28 08.6
 --0002
 --0002
 --0002!             -  Elev Factor  x  Scale Factor =   Combined Factor
 --0002!SPC VA N     -   0.99999470  x   0.99997447  =   0.99996917
 --0002!UTM  18      -   0.99999470  x   1.00013245  =   1.00012715
 --0002
 --0002
 --0002:                        Azimuth Mark(s)                  Grid Az
 --0002:SPC VA N     -  CORBIN QUAD 2                             45 33 53.9
 --0002:UTM  18      -  CORBIN QUAD 2                             47 44 11.2
 --0002
 --0002:SPC VA N     -  CORBIN QUAD 4                            135 34 30.6
 --0002:UTM  18      -  CORBIN QUAD 4                            137 44 47.8
 --0002
 --0002|---------------------------------------------------------------------|
 --0002| PID    Reference Object                     Distance      Geod. Az  |
 --0002|                                                           dddmmss.s |
 --0002| HV8179 CORBIN QUAD 2                       122.833 METERS 0461602.6 |
 --0002| HV8182 CORBIN QUAD 4                       149.996 METERS 1361639.2 |
 --0002|---------------------------------------------------------------------|
 --0002
 --0002                          SUPERSEDED SURVEY CONTROL
 --0002
 --0002.Superseded survey control exists for this station but is not shown.
 --0002
 --0002
 --0002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 --0002.See file dsdata.txt to determine how the superseded data were derived.
 --0002
 --0002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9207930936(NAD 83)
 --0002
 --0002_MARKER: DH = HORIZONTAL STATION DISK
 --0002_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 --0002_STAMPING: CORBIN QUAD.1 1981                                
 --0002_MARK LOGO: NGS   
 --0002_MAGNETIC: N = NO MAGNETIC MATERIAL
 --0002_PROJECTION: FLUSH
 --0002_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 --0002+STABILITY: SURFACE MOTION
 --0002_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 --0002+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2013
 --0002
 --0002  HISTORY     - Date     Condition        Report By
 --0002  HISTORY     - 1981     MONUMENTED       NGS   
 --0002  HISTORY     - 19831003 GOOD             NGS   
 --0002  HISTORY     - 19990210 GOOD             USPSQD
 --0002  HISTORY     - 20020116 GOOD             USPSQD
 --0002  HISTORY     - 20090415 GOOD             NGS   
 --0002  HISTORY     - 20121011 GOOD             NGS   
 --0002  HISTORY     - 20130320 GOOD             NGS   
 --0002
 --0002                          STATION DESCRIPTION
 --0002
 --0002'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 --0002'0.6 KM (0.35 MI) EAST ALONG COUNTY ROUTE 610 FROM THE JUNCTIONWITH
 --0002'STATE ROUTE 2, JUST SOUTH OF THE POST OFFICE IN CORBIN, TO A FORK,
 --0002'THENCE 0.5 KM (0.30 MI) EAST ALONG BURMA ROAD TO A CIRCLE DRIVEWAY
 --0002'ON THE LEFT.  THENCE 0.2 KM (0.10 MI) NORTH THEN EAST ALONG THE
 --0002'DRIVEWAY TO THE FREDERICKSBURG GEOMAGNETIC CENTER OFFICE BUILDING ON
 --0002'THE LEFT AND A NARROW PAVED STREET ON THE LEFT.  THENCE 0.1 KM
 --0002'(0.05 MI) NORTH ALONG THE PAVED STREET PASSING BETWEEN THE OFFICE
 --0002'BUILDING AND A FIVE-BAY GARAGE TO THE MARK ON THE LEFT.  35 METERS
 --0002'WEST FROM THE CENTER OF THE PAVED STREET, 26.8 METERS NORTH FROM THE
 --0002'NORTH EDGE OF A LARGE WHITE FRAME BUILDING, 10.8 METERS EAST FROM
 --0002'THE EAST CORNER OF A WEATHER STAND. 
 --0002' 
 --0002                          STATION RECOVERY (1999)
 --0002
 --0002'RECOVERY NOTE BY US POWER SQUADRON 1999
 --0002'RECOVERED IN GOOD CONDITION. 
 --0002' 
 --0002                          STATION RECOVERY (2002)
 --0002
 --0002'RECOVERY NOTE BY US POWER SQUADRON 2002 (EEC)
 --0002'RECOVERED IN GOOD CONDITION. 
 --0002' 
 --0002                          STATION RECOVERY (2009)
 --0002
 --0002'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRL)
 --0002'RECOVERED AS DESCRIBED 
 --0002' 
 --0002                          STATION RECOVERY (2012)
 --0002
 --0002'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 --0002'RECOVERED IN GOOD CONDITION.
 --0002
1
 --0003 **********************************************************************
 --0003  SSN         -  0003
 --0003  DESIGNATION -  CORBIN QUAD 2                                     
 --0003  PID         -  HV8179
 --0003  STATE/COUNTY-  VA/CAROLINE                 
 --0003  COUNTRY     -  US
 --0003  USGS QUAD   -  
 --0003
 --0003                         *CURRENT SURVEY CONTROL
 --0003  ______________________________________________________________________
 --0003* NAD 83((199) POSITION- 38 12 11.33208(N) 077 22 24.80756(W)   ADJUSTED
 --0003* NAVD 88 ORTHO HEIGHT -    67.313  (meters)     220.84  (feet) ADJUSTED
 --0003  ______________________________________________________________________
 --0003  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC12
 --0003  GEOID HEIGHT    -        -32.57  (meters)                     GEOID12
 --0003  DYNAMIC HEIGHT  -         67.272 (meters)      220.71  (feet) COMP
 --0003  MODELED GRAVITY -    980,023.5   (mgal)                       NAVD 88
 --0003
 --0003  HORZ ORDER      -  THIRD
 --0003  VERT ORDER      -  FIRST CLASS I
 --0003
 --0003
 --0003.Warning - This is a preliminary description created by Windesc!
 --0003
 --0003.The horizontal coordinates were established by classical geodetic methods
 --0003.and adjusted by the National Geodetic Survey in November 1994.
 --0003
 --0003.The orthometric height was determined by differential leveling and.
 --0003
 --0003.The Laplace correction was computed from DEFLEC12 derived deflections.
 --0003
 --0003.The geoid height was determined by GEOID12.
 --0003
 --0003.The dynamic height is computed by dividing the NAVD 88
 --0003.geopotential number by the normal gravity value computed on the
 --0003.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 --0003.degrees latitude (g = 980.6199 gals.).
 --0003
 --0003.The modeled gravity was interpolated from observed gravity values.
 --0003
 --0003;                    North         East     Units Scale Factor Converg.
 --0003;SPC VA N     - 2,060,153.488 3,598,659.647   MT  0.99997437   +0 42 10.9
 --0003;SPC VA N     - 6,759,020.235 11,806,602.524 sFT  0.99997437   +0 42 10.9
 --0003;UTM  18      - 4,231,018.264   292,170.047   MT  1.00013199   -1 28 06.4
 --0003
 --0003
 --0003!             -  Elev Factor  x  Scale Factor =   Combined Factor
 --0003!SPC VA N     -   0.99999455  x   0.99997437  =   0.99996892
 --0003!UTM  18      -   0.99999455  x   1.00013199  =   1.00012653
 --0003
 --0003
 --0003:                        Azimuth Mark(s)                  Grid Az
 --0003:SPC VA N     -  CORBIN QUAD 1                            225 33 53.9
 --0003:UTM  18      -  CORBIN QUAD 1                            227 44 11.3
 --0003
 --0003:SPC VA N     -  CORBIN QUAD 4                            174 53 07.3
 --0003:UTM  18      -  CORBIN QUAD 4                            177 03 24.7
 --0003
 --0003|---------------------------------------------------------------------|
 --0003| PID    Reference Object                     Distance      Geod. Az  |
 --0003|                                                           dddmmss.s |
 --0003| HV8182 CORBIN QUAD 4                       193.890 METERS 1753518.2 |
 --0003| HV8180 CORBIN QUAD 1                       122.833 METERS 2261604.8 |
 --0003|---------------------------------------------------------------------|
 --0003
 --0003                          SUPERSEDED SURVEY CONTROL
 --0003
 --0003.Superseded survey control exists for this station but is not shown.
 --0003
 --0003
 --0003.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 --0003.See file dsdata.txt to determine how the superseded data were derived.
 --0003
 --0003_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9217031018(NAD 83)
 --0003
 --0003_MARKER: DH = HORIZONTAL STATION DISK
 --0003_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 --0003_STAMPING: CORBIN QUAD 2 1981                                
 --0003_MARK LOGO: CGS   
 --0003_MAGNETIC: N = NO MAGNETIC MATERIAL
 --0003_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 --0003+STABILITY: SURFACE MOTION
 --0003_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 --0003+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2013
 --0003
 --0003  HISTORY     - Date     Condition        Report By
 --0003  HISTORY     - 1981     MONUMENTED       NGS   
 --0003  HISTORY     - 19831003 GOOD             NGS   
 --0003  HISTORY     - 19990210 GOOD             USPSQD
 --0003  HISTORY     - 20020116 GOOD             USPSQD
 --0003  HISTORY     - 20130320 GOOD             NGS   
 --0003
 --0003                          STATION DESCRIPTION
 --0003
 --0003'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 --0003'0.6 KM (0.35 MI) EAST ALONG COUNTY ROUTE 610 FROM THE JUNCTION WITH
 --0003'STATE ROUTE 2, JUST SOUTH OF THE POST OFFICE IN CORBIN TO A FORK,
 --0003'THENCE 0.5 KM (0.30 MI) EAST ALONG BURMA ROAD TO A CIRCLE DRIVEWAY
 --0003'ON THE LEFT, THENCE 0.2 KM (0.10 MI) NORTH THEN EAST ALONG THE
 --0003'DRIVEWAY TO THE FREDERICKSBURG GEOMAGNETIC CENTER OFFICE BUILDING ON
 --0003'THE LEFT. THENCE 0.4 KM (0.25 MI) EAST AND NORTH PASSING TO THE
 --0003'RIGHT OF A FIVE-BAY GARAGE TO THE END OF THE GRAVEL DRIVE AT
 --0003'BUILDING 8 AND THE MARK ON THE LEFT.  55.2 METERS EAST FROM THE EAST
 --0003'CORNER OF A LARGE WHITE FRAME BUILDING, 37.4 METERS SOUTHWEST FROM
 --0003'THE SUOTHWEST CORNER OF BUILDING 8, 18.7 METERS NORTH FROM A LONE
 --0003'25 CM DIAMETER CEDAR TREE. 
 --0003' 
 --0003                          STATION RECOVERY (1999)
 --0003
 --0003'RECOVERY NOTE BY US POWER SQUADRON 1999
 --0003'RECOVERED IN GOOD CONDITION. 
 --0003' 
 --0003                          STATION RECOVERY (2002)
 --0003
 --0003'RECOVERY NOTE BY US POWER SQUADRON 2002 (EEC)
 --0003'RECOVERED IN GOOD CONDITION.
 --0003
1
 --0004 **********************************************************************
 --0004  SSN         -  0004
 --0004  DESIGNATION -  CORBIN QUAD 4                                     
 --0004  PID         -  HV8182
 --0004  STATE/COUNTY-  VA/CAROLINE                 
 --0004  COUNTRY     -  US
 --0004  USGS QUAD   -  
 --0004
 --0004                         *CURRENT SURVEY CONTROL
 --0004  ______________________________________________________________________
 --0004* NAD 83((199) POSITION- 38 12 05.06241(N) 077 22 24.19459(W)   ADJUSTED
 --0004* NAVD 88 ORTHO HEIGHT -    67.407  (meters)     221.15  (feet) ADJUSTED
 --0004  ______________________________________________________________________
 --0004  LAPLACE CORR    -         -2.53  (seconds)                    DEFLEC12
 --0004  GEOID HEIGHT    -        -32.57  (meters)                     GEOID12
 --0004  DYNAMIC HEIGHT  -         67.366 (meters)      221.02  (feet) COMP
 --0004  MODELED GRAVITY -    980,023.3   (mgal)                       NAVD 88
 --0004
 --0004  HORZ ORDER      -  THIRD
 --0004  VERT ORDER      -  FIRST CLASS I
 --0004
 --0004
 --0004.Warning - This is a preliminary description created by Windesc!
 --0004
 --0004.The horizontal coordinates were established by classical geodetic methods
 --0004.and adjusted by the National Geodetic Survey in November 1994.
 --0004
 --0004.The orthometric height was determined by differential leveling and.
 --0004
 --0004.The Laplace correction was computed from DEFLEC12 derived deflections.
 --0004
 --0004.The geoid height was determined by GEOID12.
 --0004
 --0004.The dynamic height is computed by dividing the NAVD 88
 --0004.geopotential number by the normal gravity value computed on the
 --0004.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 --0004.degrees latitude (g = 980.6199 gals.).
 --0004
 --0004.The modeled gravity was interpolated from observed gravity values.
 --0004
 --0004;                    North         East     Units Scale Factor Converg.
 --0004;SPC VA N     - 2,059,960.375 3,598,676.931   MT  0.99997459   +0 42 11.3
 --0004;SPC VA N     - 6,758,386.664 11,806,659.232 sFT  0.99997459   +0 42 11.3
 --0004;UTM  18      - 4,230,824.604   292,180.004   MT  1.00013193   -1 28 05.9
 --0004
 --0004
 --0004!             -  Elev Factor  x  Scale Factor =   Combined Factor
 --0004!SPC VA N     -   0.99999453  x   0.99997459  =   0.99996912
 --0004!UTM  18      -   0.99999453  x   1.00013193  =   1.00012647
 --0004
 --0004
 --0004:                        Azimuth Mark(s)                  Grid Az
 --0004:SPC VA N     -  CORBIN QUAD 1                            315 34 30.6
 --0004:UTM  18      -  CORBIN QUAD 1                            317 44 47.7
 --0004
 --0004:SPC VA N     -  CORBIN QUAD 2                            354 53 07.3
 --0004:UTM  18      -  CORBIN QUAD 2                            357 03 24.5
 --0004
 --0004|---------------------------------------------------------------------|
 --0004| PID    Reference Object                     Distance      Geod. Az  |
 --0004|                                                           dddmmss.s |
 --0004| HV8180 CORBIN QUAD 1                       149.996 METERS 3161641.9 |
 --0004| HV8179 CORBIN QUAD 2                       193.890 METERS 3553518.6 |
 --0004|---------------------------------------------------------------------|
 --0004
 --0004                          SUPERSEDED SURVEY CONTROL
 --0004
 --0004.Superseded survey control exists for this station but is not shown.
 --0004
 --0004
 --0004.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 --0004.See file dsdata.txt to determine how the superseded data were derived.
 --0004
 --0004_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9218030825(NAD 83)
 --0004
 --0004_MARKER: DH = HORIZONTAL STATION DISK
 --0004_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 --0004_STAMPING: CORBIN QUAD 4 1981                                
 --0004_MARK LOGO: NGS   
 --0004_MAGNETIC: N = NO MAGNETIC MATERIAL
 --0004_PROJECTION: FLUSH
 --0004_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 --0004+STABILITY: SURFACE MOTION
 --0004_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 --0004+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2013
 --0004
 --0004  HISTORY     - Date     Condition        Report By
 --0004  HISTORY     - 1981     MONUMENTED       NGS   
 --0004  HISTORY     - 19831003 GOOD             NGS   
 --0004  HISTORY     - 19990210 GOOD             USPSQD
 --0004  HISTORY     - 20020116 GOOD             USPSQD
 --0004  HISTORY     - 20120314 GOOD             NGS   
 --0004  HISTORY     - 20130320 GOOD             NGS   
 --0004
 --0004                          STATION DESCRIPTION
 --0004
 --0004'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 --0004'0.6 KM (0.35 MI) EAST ALONG COUNTY ROUTE 610 FROM THE JUNCTIONWITH
 --0004'STATE ROUTE 2, JUST SOUTH OF THE POST OFFICE IN CORBIN, TO A FORK,
 --0004'THENCE 0.7 KM (0.45 MI) EAST ALONG BURMA ROAD TO THE SECOND ENTRANCE
 --0004'TO A CIRCULAR DRIVE LEADING TO THE FREDERICKSBURG GEOMAGNETIC CENTER
 --0004'OFFICE BUILDING AND TO THE MARK ON THE LEFT.  15.5 METERS EAST FROM
 --0004'THE CENTER OF THE CIRCULAR DRIVEWAY, 14 METERS NORTH FROM THE CENTER
 --0004'OF BURMA ROAD, 1.9 METERS SOUTHWEST FROM A TELEPHONE POLE OF
 --0004'UNDERGROUND CABLE. 
 --0004' 
 --0004                          STATION RECOVERY (1999)
 --0004
 --0004'RECOVERY NOTE BY US POWER SQUADRON 1999
 --0004'RECOVERED IN GOOD CONDITION. 
 --0004' 
 --0004                          STATION RECOVERY (2002)
 --0004
 --0004'RECOVERY NOTE BY US POWER SQUADRON 2002 (EEC)
 --0004'RECOVERED IN GOOD CONDITION. 
 --0004' 
 --0004                          STATION RECOVERY (2012)
 --0004
 --0004'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 --0004'RECOVERED IN GOOD CONDITION.
 --0004
1
 --0005 **********************************************************************
 --0005  SSN         -  0005
 --0005  DESIGNATION -  WMF                                               
 --0005  PID         -  DM5305
 --0005  STATE/COUNTY-  VA/CAROLINE                 
 --0005  COUNTRY     -  US
 --0005  USGS QUAD   -  
 --0005
 --0005                         *CURRENT SURVEY CONTROL
 --0005  ______________________________________________________________________
 --0005* NAD 83((198) POSITION- 38 12 06.8    (N) 077 22 27.2    (W)   HD_HELD2
 --0005* NAVD 88 ORTHO HEIGHT -    67.449  (meters)     221.29  (feet) ADJUSTED
 --0005  ______________________________________________________________________
 --0005  GEOID HEIGHT    -        -32.57  (meters)                     GEOID12
 --0005  DYNAMIC HEIGHT  -         67.408 (meters)      221.15  (feet) COMP
 --0005  MODELED GRAVITY -    980,023.2   (mgal)                       NAVD 88
 --0005
 --0005  VERT ORDER      -  FIRST CLASS II
 --0005
 --0005
 --0005.Warning - This is a preliminary description created by Windesc!
 --0005
 --0005.The horizontal coordinates were established by autonomous hand held GPS
 --0005.observations and have an estimated accuracy of +/- 10 meters.
 --0005
 --0005.The orthometric height was determined by differential leveling and.
 --0005
 --0005.The geoid height was determined by GEOID12.
 --0005
 --0005.The dynamic height is computed by dividing the NAVD 88
 --0005.geopotential number by the normal gravity value computed on the
 --0005.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 --0005.degrees latitude (g = 980.6199 gals.).
 --0005
 --0005.The modeled gravity was interpolated from observed gravity values.
 --0005
 --0005;                    North         East    Units  Estimated Accuracy
 --0005;SPC VA N     - 2,060,013.    3,598,603.      MT  (+/- 10 meters HH2 GPS)
 --0005
 --0005                          SUPERSEDED SURVEY CONTROL
 --0005
 --0005.Superseded survey control exists for this station but is not shown.
 --0005
 --0005
 --0005.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 --0005.See file dsdata.txt to determine how the superseded data were derived.
 --0005
 --0005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH92103088(NAD 83)
 --0005
 --0005_MARKER: DB = BENCH MARK DISK
 --0005_SETTING: 31 = SET IN PAVEMENT SUCH AS STREET, SIDEWALK, CURB, STEP, APRON, DROP INLET
 --0005_SP_SET: SLAB
 --0005_STAMPING: WMF 1982                                          
 --0005_MARK LOGO: CGS   
 --0005_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 --0005_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 --0005+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2013
 --0005
 --0005  HISTORY     - Date     Condition        Report By
 --0005  HISTORY     - 1982     MONUMENTED       NGS   
 --0005  HISTORY     - 20101027 GOOD             NGS   
 --0005  HISTORY     - 20130320 GOOD             NGS   
 --0005
 --0005                          STATION DESCRIPTION
 --0005
 --0005'DESCRIBED BY NATIONAL GEODETIC SURVEY 2010 (KLF)
 --0005'THE STATION IS LOCATED ABOUT 6.4 MI (10.3 KM) NORTH-NORTHEAST OF
 --0005'WOODFORD, 5.3 MI (8.5 KM) NORTHEAST OF GUINEA AND 0.8 MI (1.3 KM)
 --0005'EAST OF CORBIN. 
 --0005' 
 --0005'TO REACH FROM THE JUNCTION OF US 17 AND VA 2, GO SOUTH ON VA 2 FOR
 --0005'2.52 MI (4.1 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO
 --0005'EAST-SOUTHEAST ON PEPMEIER HILL ROAD FOR 0.43 MI (0.7 KM) TO A FORK.
 --0005'CONTINUE STRAIGHT AND GO EAST ON OBSERVATORY ROAD FOR 0.33 MI
 --0005'(0.5 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO NORTH ON
 --0005'OFFICE DRIVE FOR 0.11 MI (0.2 KM) TO THE STATION ON THE LEFT. 
 --0005' 
 --0005'IT IS 66.2 FT (20.2 M) EAST-NORTHEAST OF A POWER LINE POLE WITH
 --0005'3 TRANSFORMERS, 63.3 FT (19.3 M) NORTHWEST OF A STREET LIGHT POLE,
 --0005'58.3 FT (17.8 M) SOUTHEAST OF THE SOUTHEAST CORNER OF A LOADING
 --0005'DOCK, 49.0 FT (14.9 M) SOUTH-SOUTHEAST OF BENCH MARK DON B, 43.4 FT
 --0005'(13.2 M) WEST-SOUTHWEST OF THE SOUTHWEST CORNER OF A BLOCK BUILDING,
 --0005'16.6 FT (5.1 M) NORTH OF THE CENTERLINE OF OFFICE DRIVE, 2.2 FT
 --0005'(0.7 M) NORTHWEST OF A FIRE HYDRANT INSIDE A SHED AND ABOUT LEVEL
 --0005'WITH THE ROAD.
 --0005
1
 --0006 **********************************************************************
 --0006  SSN         -  0006
 --0006  DESIGNATION -  DON B                                             
 --0006  PID         -  DM5303
 --0006  STATE/COUNTY-  VA/CAROLINE                 
 --0006  COUNTRY     -  US
 --0006  USGS QUAD   -  
 --0006
 --0006                         *CURRENT SURVEY CONTROL
 --0006  ______________________________________________________________________
 --0006* NAD 83((198) POSITION- 38 12 07.3    (N) 077 22 27.3    (W)   HD_HELD2
 --0006* NAVD 88 ORTHO HEIGHT -    68.538  (meters)     224.86  (feet) ADJUSTED
 --0006  ______________________________________________________________________
 --0006  GEOID HEIGHT    -        -32.57  (meters)                     GEOID12
 --0006  DYNAMIC HEIGHT  -         68.497 (meters)      224.73  (feet) COMP
 --0006  MODELED GRAVITY -    980,023.3   (mgal)                       NAVD 88
 --0006
 --0006  VERT ORDER      -  FIRST CLASS II
 --0006
 --0006
 --0006.Warning - This is a preliminary description created by Windesc!
 --0006
 --0006.The horizontal coordinates were established by autonomous hand held GPS
 --0006.observations and have an estimated accuracy of +/- 10 meters.
 --0006
 --0006.The orthometric height was determined by differential leveling and.
 --0006
 --0006.The geoid height was determined by GEOID12.
 --0006
 --0006.The dynamic height is computed by dividing the NAVD 88
 --0006.geopotential number by the normal gravity value computed on the
 --0006.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 --0006.degrees latitude (g = 980.6199 gals.).
 --0006
 --0006.The modeled gravity was interpolated from observed gravity values.
 --0006
 --0006;                    North         East    Units  Estimated Accuracy
 --0006;SPC VA N     - 2,060,028.    3,598,601.      MT  (+/- 10 meters HH2 GPS)
 --0006
 --0006                          SUPERSEDED SURVEY CONTROL
 --0006
 --0006.Superseded survey control exists for this station but is not shown.
 --0006
 --0006
 --0006.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 --0006.See file dsdata.txt to determine how the superseded data were derived.
 --0006
 --0006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH92103089(NAD 83)
 --0006
 --0006_MARKER: DV = VERTICAL CONTROL DISK
 --0006_SETTING: 36 = SET IN A MASSIVE STRUCTURE: MEDIUM SIZE BUILDINGS; TOWER, OVERHEAD SIGN BASES
 --0006_SP_SET: BUILDING
 --0006_STAMPING: DON B 2007                                        
 --0006_MARK LOGO: NGS   
 --0006_MAGNETIC: N = NO MAGNETIC MATERIAL
 --0006_STABILITY: B = PROBABLY HOLD POSTION/ELEVATION WELL
 --0006_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 --0006+SATELLITE: SATELLITE OBSERVATIONS - May 04, 2010
 --0006
 --0006  HISTORY     - Date     Condition        Report By
 --0006  HISTORY     - 2007     MONUMENTED       NGS   
 --0006  HISTORY     - 20100504 GOOD             NGS   
 --0006  HISTORY     - 20130320 GOOD             NGS   
 --0006
 --0006                          STATION DESCRIPTION
 --0006
 --0006'DESCRIBED BY NATIONAL GEODETIC SURVEY 2010 (KLF)
 --0006'THE MARK IS LOCATED ABOUT 6.4 MI (10.3 KM) NORTH-NORTHEAST OF
 --0006'WOODFORD, 5.4 MI (8.7 KM) NORTHEAST OF GUINEA AND 0.9 MI (1.4 KM)
 --0006'EAST OF CORBIN.  OWNERSHIP--U.S. GOVERNMENT. 
 --0006' 
 --0006'TO REACH FROM THE JUNCTION OF US 17 AND VA 2, GO SOUTH ON VA 2 FOR
 --0006'2.58 MI (4.2 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO
 --0006'NORTHEAST ON PEPMEIER HILL ROAD FOR 0.45 MI (0.7 KM) TO A FORK.
 --0006'CONTINUE STRAIGHT AND GO EAST ON OBSERVATORY ROAD FOR 0.30 MI
 --0006'(0.5 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO NORTH ON
 --0006'OFFICE DRIVE FOR 0.10 MI (0.2 KM) TO THE MARK ON THE LEFT IN THE
 --0006'SOUTHEAST CORNER OF THE ADMINISTRATION BUILDING. 
 --0006' 
 --0006'IT IS 48.1 M (157.8 FT) NORTHEAST OF A FLAG POLE, 33.9 M (111.2 FT)
 --0006'NORTHWEST OF A LIGHT POLE NO NUMBER, 20.25 M (66.4 FT)
 --0006'WEST-NORTHWEST OF THE SOUTHWEST CORNER OF A CONCRETE BLOCK GARAGE,
 --0006'18.8 M (61.7 FT) NORTH OF OFFICE DRIVE, 10.9 M (35.8 FT)
 --0006'SOUTH-SOUTHWEST OF THE SOUTHEAST CORNER OF A CONCRETE PAD FOR A
 --0006'1000 GALLON FUEL OIL TANK AND SET VERTICALLY IN THE SOUTH FACE OF
 --0006'THE BUILDING AND ABOUT 1.10 M (3.6 FT) HIGHER THAN THE GROUND.
 --0006