National Geodetic Survey,   Retrieval Date = AUGUST 19, 2002
 LT0501 ***********************************************************************
 LT0501  DESIGNATION -  BLACK MTN RESET
 LT0501  PID         -  LT0501
 LT0501  STATE/COUNTY-  CA/PLUMAS
 LT0501  USGS QUAD   -  FERRIS CREEK (1994)
 LT0501
 LT0501                         *CURRENT SURVEY CONTROL
 LT0501  ___________________________________________________________________
 LT0501* NAD 83(1992)-  40 06 54.00939(N)    120 19 16.43425(W)     ADJUSTED  
 LT0501* NAVD 88     -      2157.0    (meters)    7077.     (feet)  VERTCON   
 LT0501  ___________________________________________________________________
 LT0501  EPOCH DATE  -        1991.35
 LT0501  LAPLACE CORR-          -3.36  (seconds)                    DEFLEC99
 LT0501  GEOID HEIGHT-         -23.11  (meters)                     GEOID99
 LT0501
 LT0501  HORZ ORDER  -  SECOND
 LT0501
 LT0501.The horizontal coordinates were established by classical geodetic methods
 LT0501.and adjusted by the National Geodetic Survey in March 1994.
 LT0501.The horizontal coordinates are valid at the epoch date displayed above.
 LT0501.The epoch date for horizontal control is a decimal equivalence
 LT0501.of Year/Month/Day.
 LT0501
 LT0501.The NAVD 88 height was computed by applying the VERTCON shift value to
 LT0501.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 LT0501
 LT0501.The Laplace correction was computed from DEFLEC99 derived deflections.
 LT0501
 LT0501.The geoid height was determined by GEOID99.
 LT0501
 LT0501;                    North         East     Units   Scale      Converg.
 LT0501;SPC CA 1     -   588,166.786 2,143,103.099   MT  0.99997302 +1 05 51.8
 LT0501;SPC CA 1     - 1,929,677.20  7,031,164.08   sFT  0.99997302 +1 05 51.8
 LT0501;UTM  10      - 4,443,961.403   728,289.078   MT  1.00024161 +1 43 36.3
 LT0501
 LT0501:                Primary Azimuth Mark                     Grid Az
 LT0501:SPC CA 1     -  BLACK MOUNTAIN AZ MK                     234 20 07.2
 LT0501:UTM  10      -  BLACK MOUNTAIN AZ MK                     233 42 22.7
 LT0501
 LT0501|---------------------------------------------------------------------|
 LT0501| PID    Reference Object                     Distance      Geod. Az  |
 LT0501|                                                           dddmmss.s |
 LT0501| DB6322 BLACK MOUNTAIN RM 1                  13.095 METERS 12811     |
 LT0501| LT0502 BLACK MOUNTAIN LOOKOUT 1949          37.751 METERS 18222     |
 LT0501| DB6323 BLACK MOUNTAIN RM 2                  21.195 METERS 19901     |
 LT0501| DB6321 BLACK MOUNTAIN AZ MK                               2352559.0 |
 LT0501| DB6324 BLACK MOUNTAIN RM 3                   7.037 METERS 25055     |
 LT0501| LT0522 THOMPSON PEAK FIRE LOT              APPROX.25.8 KM 3085436.9 |
 LT0501|---------------------------------------------------------------------|
 LT0501
 LT0501                          SUPERSEDED SURVEY CONTROL
 LT0501
 LT0501  NAD 83(1986)-  40 06 54.01813(N)    120 19 16.42558(W) AD(1984.00) 2
 LT0501  NAD 27      -  40 06 54.37000(N)    120 19 12.66000(W) AD(       ) 2
 LT0501  NGVD 29     -      2155.9    (m)         7073.     (f) VERT ANG       
 LT0501
 LT0501.Superseded values are not recommended for survey control.
 LT0501.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 LT0501.See file dsdata.txt to determine how the superseded data were derived.
 LT0501
 LT0501_MARKER: DS = TRIANGULATION STATION DISK
 LT0501_SETTING: 80 = SET IN A BOULDER
 LT0501
 LT0501  HISTORY     - Date     Condition        Report By
 LT0501  HISTORY     - 1977     MONUMENTED       NGS
 LT0501
 LT0501                          STATION DESCRIPTION
 LT0501
 LT0501'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 LT0501'TO REACH THE STATION FROM THE EAST END OF MILFORD, TURN RIGHT,
 LT0501'OFF OF U.S. HIGHWAY 395, AS PER SIGN 2-1/2 LAUFMAN R.S. AND
 LT0501'GO 1.4 MILES TO A FORK.  TURN RIGHT AS PER SIGN LAUFMAN RANGER
 LT0501'STATION AND GO 4.2 MILES TO A FORK.  KEEP STRAIGHT AHEAD,
 LT0501'LEFT, AS PER SIGN BECKWOURTH 25 AND GO 0.8 MILE TO A FORK.
 LT0501'TURN LEFT AS PER SIGN BLACK MT. LOOKOUT 3. MILE AND GO 3.0 MILES
 LT0501'TO THE LOOKOUT AND THE STATION.
 LT0501'
 LT0501'THE AZIMUTH MARK, REFERENCE MARK 1, AND BLACK MOUNTAIN LOOKOUT
 LT0501'WERE RECOVERED IN GOOD CONDITION.  THE STATION MARK AND REFERENCE
 LT0501'MARK 2 WERE FOUND DESTROYED SO REFERENCE MARK 3 WAS SET ON THIS
 LT0501'DATE AND, USING THE DISTANCE TO REFERENCE MARK 1 AND THE
 LT0501'DIRECTIONS TO REFERENCE MARK 1, THE AZIMUTH MARK, AND BLACK
 LT0501'MOUNTAIN LOOKOUT, A NEW STATION MARK WAS SET IN THE SAME
 LT0501'POSITION AS IT WAS FORMERLY.  THE DISTANCE FROM THE STATION MARK
 LT0501'TO BLACK MOUNTAIN LOOKOUT MEASURED ON THIS DATE WAS FOUND TO BE
 LT0501'0.173 M. LONGER THAN THE 1949 MEASUREMENT.  THE 1949
 LT0501'DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITIONS--
 LT0501'
 LT0501'THE STATION MARK SET ON THIS DATE IS AN NGS HORIZONTAL CONTROL
 LT0501'DISK STAMPED BLACK MTN 1949 1977 EPOXIED IN A DRILL HOLE IN THE
 LT0501'1X1-FOOT TOP OF A BOULDER PROJECTING 0.3 FOOT ABOVE THE GROUND
 LT0501'AND IS 18 FEET WEST OF THE CENTERLINE OF THE ROAD, ABOUT 3 FEET
 LT0501'HIGHER THAN THE ROAD, AND 3 FEET SOUTHEAST OF A 2-FOOT CAIRN.
 LT0501'
 LT0501'REFERENCE MARK 1 IS 22 FEET EAST OF THE CENTERLINE OF THE
 LT0501'ROAD, ABOUT 6 FEET HIGHER THAN THE ROAD, AND ABOUT 3 FEET HIGHER
 LT0501'THAN THE STATION MARK.
 LT0501'
 LT0501'REFERENCE MARK 3 IS AN NGS REFERENCE MARK DISK STAMPED BLACK MTN
 LT0501'1949 NO 3 1977 EPOXIED IN A DRILL HOLE IN THE 2X3-FOOT TOP OF A
 LT0501'BOULDER PROJECTING 1 FOOT ABOVE THE GROUND AND IS 34 FEET WEST OF
 LT0501'THE CENTERLINE OF THE ROAD AND ABOUT 1-1/2 FEET HIGHER THAN THE
 LT0501'STATION MARK.
 LT0501'
 LT0501'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 LT0501'4-3/4 MILES SE OF MILFORD.