National Geodetic Survey, Retrieval Date = SEPTEMBER 9, 2002 KS1491 *********************************************************************** KS1491 DESIGNATION - COLUMBIA KS1491 PID - KS1491 KS1491 STATE/COUNTY- CA/NEVADA KS1491 USGS QUAD - PIKE (1975) KS1491 KS1491 *CURRENT SURVEY CONTROL KS1491 ___________________________________________________________________ KS1491* NAD 83(1992)- 39 23 25.46774(N) 120 58 01.66482(W) ADJUSTED KS1491* NAVD 88 - 1189.7 (meters) 3903. (feet) VERTCON KS1491 ___________________________________________________________________ KS1491 EPOCH DATE - 1991.35 KS1491 LAPLACE CORR- 11.29 (seconds) DEFLEC99 KS1491 GEOID HEIGHT- -25.14 (meters) GEOID99 KS1491 KS1491 HORZ ORDER - SECOND KS1491 KS1491.The horizontal coordinates were established by classical geodetic methods KS1491.and adjusted by the National Geodetic Survey in March 1994. KS1491.The horizontal coordinates are valid at the epoch date displayed above. KS1491.The epoch date for horizontal control is a decimal equivalence KS1491.of Year/Month/Day. KS1491 KS1491.The NAVD 88 height was computed by applying the VERTCON shift value to KS1491.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) KS1491 KS1491.The Laplace correction was computed from DEFLEC99 derived deflections. KS1491 KS1491.The geoid height was determined by GEOID99. KS1491 KS1491; North East Units Scale Converg. KS1491;SPC CA 2 - 691,851.861 2,088,971.868 MT 0.99992887 +0 39 04.3 KS1491;SPC CA 2 - 2,269,850.65 6,853,568.54 sFT 0.99992887 +0 39 04.3 KS1491;UTM 10 - 4,362,073.332 675,065.630 MT 0.99997736 +1 17 25.4 KS1491 KS1491: Primary Azimuth Mark Grid Az KS1491:SPC CA 2 - COLUMBIA AZ MK 233 37 04.2 KS1491:UTM 10 - COLUMBIA AZ MK 232 58 43.1 KS1491 KS1491|---------------------------------------------------------------------| KS1491| PID Reference Object Distance Geod. Az | KS1491| dddmmss.s | KS1491| KS1492 COLUMBIA HILL LO USFS 1949 8.119 METERS 00832 | KS1491| DB7087 COLUMBIA RM 1 5.061 METERS 02000 | KS1491| KS1493 COLUMBIA HILL LOT 1949 11.641 METERS 02314 | KS1491| DB7088 COLUMBIA RM 2 12.903 METERS 08253 | KS1491| DB7086 COLUMBIA AZ MK 2341608.5 | KS1491|---------------------------------------------------------------------| KS1491 KS1491 SUPERSEDED SURVEY CONTROL KS1491 KS1491 NAD 83(1986)- 39 23 25.45967(N) 120 58 01.65490(W) AD(1984.00) 2 KS1491 NAD 27 - 39 23 25.84400(N) 120 57 57.84100(W) AD( ) 2 KS1491 NGVD 29 - 1188.9 (m) 3901. (f) VERT ANG KS1491 KS1491.Superseded values are not recommended for survey control. KS1491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. KS1491.See file dsdata.txt to determine how the superseded data were derived. KS1491 KS1491_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION KS1491_SETTING: 80 = SET IN A BOULDER KS1491 KS1491 HISTORY - Date Condition Report By KS1491 HISTORY - 1949 MONUMENTED CGS KS1491 HISTORY - 1956 SEE DESCRIPTION CGS KS1491 KS1491 STATION DESCRIPTION KS1491 KS1491'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (WRH) KS1491'THE STATION IS LOCATED ABOUT 13 MILES AIRLINE NORTH NORTHEAST KS1491'OF GRASS VALLEY AND ABOUT 10 MILES AIRLINE NORTH NORTHEAST KS1491'OF NEVADA CITY, ON THE WESTERN END OF A RIDGE AND NEAR THE KS1491'COLUMBIA HILL LOOKOUT TOWER. THERE IS HIGHER TIMBERED GROUND KS1491'TO THE EAST OF THE STATION. KS1491' KS1491'TO REACH THE STATION FROM THE U.S. POST OFFICE IN GRASS VALLEY, KS1491'GO NORTH ON STATE HIGHWAY 49 FOR 1 BLOCK TO A STOP SIGN. KS1491'TURN RIGHT, EAST, AND CONTINUE ON STATE HIGHWAY 49 FOR 15.6 KS1491'MILES TO A CROSS ROAD. TURN RIGHT AS PER SIGN N COLUMBIA 9 KS1491'AND GO FOR 7.5 MILES TO A TRIANGLE BLAZED TREE AND THE AZIMUTH KS1491'MARK ON THE LEFT. CONTINUE STRAIGHT AHEAD FOR 0.8 MILE TO KS1491'A CROSS ROAD. CONTINUE STRAIGHT AHEAD FOR 0.5 MILE TO THE KS1491'LAST CHANCE GROCERY STORE ON THE RIGHT AND A FORK. KEEP KS1491'STRAIGHT AHEAD, LEFT, FOR 0.2 MILE TO A FORK. CONTINUE KS1491'STRAIGHT AHEAD, LEFT, FOR 1.0 MILE TO A FORK. KS1491' KS1491'KEEP STRAIGHT AHEAD, RIGHT, FOR 1.1 MILES TO A SIDE ROAD ON KS1491'THE LEFT. TURN SHARP LEFT AS PER SIGN COLUMBIA HILL LOOKOUT KS1491'AND GO FOR 0.45 MILE TO THE LOOKOUT TOWER AND THE STATION. KS1491' KS1491'THE STATION IS STAMPED COLUMBIA 1949 AND IS A STANDARD BRONZE KS1491'DISK SET IN A DRILL HOLE IN A BOULDER THAT PROJECTS ABOUT KS1491'3 INCHES ABOVE THE GROUND. IT IS 27.0 FEET SOUTH OF THE KS1491'SOUTHWEST CORNER OF THE LOOKOUT TOWER. KS1491' KS1491'REFERENCE MARK NUMBER 1 IS STAMPED COLUMBIA NO 1 1949 AND IS KS1491'A STANDARD BRONZE DISK SET IN A DRILL HOLE IN A BOULDER THAT KS1491'PROJECTS ABOUT 4 INCHES ABOVE THE GROUND. IT IS 10.5 FEET KS1491'SOUTH OF THE SOUTHWEST CORNER OF THE LOOKOUT TOWER AND IS KS1491'ABOUT 6 INCHES HIGHER THAN THE STATION. KS1491' KS1491'REFERENCE MARK NUMBER 2 IS STAMPED COLUMBIA NO 2 1949 AND KS1491'IS A STANDARD BRONZE DISK SET IN A DRILL HOLE IN A BOULDER KS1491'THAT PROJECTS ABOUT 4 INCHES ABOVE THE GROUND. IT IS 27.3 KS1491'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE LOOKOUT TOWER KS1491'AND IS ABOUT THE SAME ELEVATION AS THE STATION. KS1491' KS1491'THE AZIMUTH MARK IS STAMPED COLUMBIA 1949 AND IS A STANDARD KS1491'BRONZE DISK SET IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT KS1491'PROJECTS ABOUT 3 INCHES ABOVE THE GROUND. IT IS ABOUT 28 KS1491'FEET NORTHWEST OF THE CENTERLINE OF THE ROAD AND ABOUT 100 KS1491'YARDS SOUTH OF A 24 INCH PINE TREE WITH A TRIANGLE BLAZE. KS1491' KS1491'COLUMBIA HILL LOOKOUT TOWER IS LOCATED NORTH NORTHEAST OF THE KS1491'STATION AND ON GROUND THAT IS ABOUT 6 INCHES HIGHER THAN KS1491'THE STATION. IT IS A WHITE PAINTED WOODEN BUILDING THAT IS KS1491'ABOUT 12 FEET SQUARE AT THE BASE AND ABOUT 25 FEET HIGH. KS1491' KS1491'THE BENCH MARK IS A STANDARD U.S. DEPARTMENT OF AGRICULTURE KS1491'FOREST SERVICE BRONZE DISK SET IN A DRILL HOLE IN THE TOP KS1491'OF THE CONCRETE STEP THAT IS AT THE SOUTHWEST CORNER OF THE KS1491'LOOKOUT TOWER. IT IS STAMPED F.S.M. COLUMBIA HILL LKT. ELEV. KS1491'L.B.L. 1939 AND IS ABOUT 12 INCHES HIGHER THAN THE STATION. KS1491' KS1491'HEIGHT OF LIGHT ABOVE STATION MARK 1.43 METERS. KS1491 KS1491 STATION RECOVERY (1956) KS1491 KS1491'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (NES) KS1491'THE STATION MARK, BOTH REFERENCE MARKS, THE AZIMUTH MARK, KS1491'AND COLUMBIA HILL (USFS) WERE RECOVERED IN GOOD CONDITION. KS1491'THE ORIGINAL DESCRIPTION IS ADEQUATE. COMPARISONS OF THE KS1491'DISTANCES AND DIRECTIONS TO THE MARKS ARE SHOWN BELOW.