National Geodetic Survey, Retrieval Date = JANUARY 11, 2005 LT0636 *********************************************************************** LT0636 DESIGNATION - LADDER LT0636 PID - LT0636 LT0636 STATE/COUNTY- CA/LASSEN LT0636 USGS QUAD - JELLICO (1995) LT0636 LT0636 *CURRENT SURVEY CONTROL LT0636 ___________________________________________________________________ LT0636* NAD 83(1992)- 40 48 37.96739(N) 121 18 24.84774(W) ADJUSTED LT0636* NAVD 88 - 1751.3 (meters) 5746. (feet) VERTCON LT0636 ___________________________________________________________________ LT0636 EPOCH DATE - 1991.35 LT0636 LAPLACE CORR- 7.48 (seconds) DEFLEC99 LT0636 GEOID HEIGHT- -23.61 (meters) GEOID03 LT0636 LT0636 HORZ ORDER - SECOND LT0636 LT0636.The horizontal coordinates were established by classical geodetic methods LT0636.and adjusted by the National Geodetic Survey in March 1994. LT0636.The horizontal coordinates are valid at the epoch date displayed above. LT0636.The epoch date for horizontal control is a decimal equivalence LT0636.of Year/Month/Day. LT0636 LT0636.The NAVD 88 height was computed by applying the VERTCON shift value to LT0636.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0636 LT0636.The Laplace correction was computed from DEFLEC99 derived deflections. LT0636 LT0636.The geoid height was determined by GEOID03. LT0636 LT0636; North East Units Scale Factor Converg. LT0636;SPC CA 1 - 664,256.773 2,058,473.804 MT 0.99989473 +0 27 11.5 LT0636;SPC CA 1 - 2,179,315.76 6,753,509.47 sFT 0.99989473 +0 27 11.5 LT0636;UTM 10 - 4,519,105.443 642,802.133 MT 0.99985100 +1 06 24.2 LT0636 LT0636! - Elev Factor x Scale Factor = Combined Factor LT0636!SPC CA 1 - 0.99972906 x 0.99989473 = 0.99962382 LT0636!UTM 10 - 0.99972906 x 0.99985100 = 0.99958010 LT0636 LT0636: Primary Azimuth Mark Grid Az LT0636:SPC CA 1 - LADDER AZ MK 190 55 43.7 LT0636:UTM 10 - LADDER AZ MK 190 16 31.0 LT0636 LT0636|---------------------------------------------------------------------| LT0636| PID Reference Object Distance Geod. Az | LT0636| dddmmss.s | LT0636| LT0637 LADDER 1948 RM 1 8.060 METERS 05958 | LT0636| LT0635 LADDER BUTTE LOOKOUT 1948 7.215 METERS 09323 | LT0636| DB8050 LADDER RM 2 9.191 METERS 18608 | LT0636| DB8049 LADDER AZ MK 1912255.2 | LT0636| LT0740 MAGEE LOOKOUT APPROX.29.6 KM 2430329.1 | LT0636|---------------------------------------------------------------------| LT0636 LT0636 SUPERSEDED SURVEY CONTROL LT0636 LT0636 NAD 83(1986)- 40 48 37.97618(N) 121 18 24.85526(W) AD(1984.00) 2 LT0636 NAD 27 - 40 48 38.38600(N) 121 18 20.95300(W) AD( ) 2 LT0636 NGVD 29 (07/19/86) 1750.2 (m) 5742. (f) VERT ANG LT0636 LT0636.Superseded values are not recommended for survey control. LT0636.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0636.See file dsdata.txt to determine how the superseded data were derived. LT0636 LT0636_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TFL4280219105(NAD 83) LT0636_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION LT0636_SETTING: 66 = SET IN ROCK OUTCROP LT0636 LT0636 HISTORY - Date Condition Report By LT0636 HISTORY - 1948 MONUMENTED CGS LT0636 LT0636 STATION DESCRIPTION LT0636 LT0636'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) LT0636'THE STATION IS LOCATED ON THE SUMMIT OF LADDER BUTTE. IT IS LT0636'ABOUT 18 MILES AIRLINE SOUTH OF MC ARTHUR, ABOUT 20 MILES LT0636'AIRLINE EAST SOUTHEAST OF BURNEY, ABOUT 8 MILES AIRLINE SOUTHWEST LT0636'OF LITTLE VALLEY AND ABOUT 29 MILES AIRLINE NORTHEAST OF VIOLA. LT0636' LT0636'THE STATION IS A STANDARD STATION DISK THAT IS SET IN A DRILL LT0636'HOLE IN OUTCROPPING BEDROCK THAT IS FLUSH WITH THE SURFACE LT0636'OF THE GROUND. IT IS SET AS DESCRIBED IN NOTE 2. IT IS 15 LT0636'FEET WEST OF THE WEST SIDE OF THE LOOKOUT BUILDING. THE LT0636'DISK IS STAMPED LADDER 1948. LT0636' LT0636'REFERENCE MARK NUMBER ONE IS A STANDARD USGS DISK THAT IS LT0636'CEMENTED IN A DRILL HOLE IN THE TOP OF A LARGE BOULDER THAT LT0636'PROJECTS 3 FEET ABOVE THE GROUND. IT IS 7 FEET NORTH OF THE LT0636'NORTH WALL OF THE LOOKOUT AND IS ABOUT 2-1/2 FEET HIGHER LT0636'THAN THE STATION. THE DISK IS NOT STAMPED. LT0636' LT0636'REFERENCE MARK NUMBER TWO IS A STANDARD REFERENCE MARK DISK LT0636'THAT IS SET IN A DRILL HOLE IN THE TOP OF A BOULDER THAT PROJECTS LT0636'2 FEET ABOVE THE GROUND. IT IS SET AS DESCRIBED IN NOTE 12C LT0636'AND IS ABOUT THE SAME ELEVATION AS THE STATION. THE MARK IS LT0636'ABOUT 18 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE LOOKOUT. LT0636'THE DISK IS STAMPED LADDER NO 2 1948. LT0636' LT0636'THE AZIMUTH MARK IS A STANDARD AZIMUTH MARK DISK THAT IS SET LT0636'IN A DRILL HOLE IN THE TOP OF A BOULDER THAT PROJECTS 4 INCHES LT0636'ABOVE THE GROUND. IT IS SET AS DESCRIBED IN NOTE 12C. THE LT0636'MARK IS 150 YARDS SOUTHWEST OF THE ROAD THAT LEADS TO THE LOOKOUT, LT0636'12 FEET NORTH OF A 10 INCH PINE TREE THAT HAS A TRIANGULAR LT0636'BLAZE ON ITS TRUNK. THE DISK IS STAMPED LADDER 1948. TO LT0636'REACH THE MARK FROM THE STATION FOLLOW THE MAIN TRAVELED ROAD LT0636'DOWN GRADE FOR 1.4 MILES TO A LARGE CLEARING ON THE RIGHT AND LT0636'A CAMP SITE ON THE LEFT. AT THIS POINT THE MARK IS ABOUT LT0636'150 YARDS TO THE SOUTHWEST AS DESCRIBED. LT0636' LT0636'THE LADDER BUTTE LOOKOUT IS A TWO STORY BUILDING THAT IS 14 FEET LT0636'SQUARE AT ITS BASE. IT IS PAINTED WHITE AND ENTRANCE IS MADE LT0636'FROM THE SOUTH SIDE OF THE BUILDING. IT IS ABOUT 24 FEET LT0636'TALL. THIS LOOKOUT HAS NOT BEEN USED FOR SOME TIME AND IS IN LT0636'POOR SHAPE. THE PICTURE POINT FOR THE STATION WILL BE THE LT0636'CENTER OF THE LOOKOUT. THE CENTER OF THE BASE IS 0.46 METERS LT0636'HIGHER THAN THE STATION. LT0636' LT0636'TO REACH THE STATION FROM THE U.S. POST OFFICE IN PITTSVILLE LT0636'GO SOUTH ON THE WESTWOOD ROAD FOR 2.1 MILES TO A T-ROAD LEFT. LT0636'KEEP STRAIGHT AHEAD AS PER SIGN WESTWOOD 66 AND FOLLOW THE LT0636'MAIN TRAVELED ROAD FOR 18.0 MILES TO A ROAD TO THE RIGHT. LT0636'TURN RIGHT AS PER SIGN GOVERNMENT LAKE AND GO 2.7 MILES TO A LT0636'ROAD TO THE RIGHT. TURN RIGHT AS PER SIGN LADDER BUTTE L.O. LT0636'AND FOLLOW THE MAIN TRAVELED ROAD FOR 2.3 MILES TO THE LOOKOUT LT0636'AND THE STATION AS DESCRIBED.