National Geodetic Survey, Retrieval Date = SEPTEMBER 12, 2002 LT0652 *********************************************************************** LT0652 DESIGNATION - DYER LT0652 PID - LT0652 LT0652 STATE/COUNTY- CA/LASSEN LT0652 USGS QUAD - CANYONDAM (1994) LT0652 LT0652 *CURRENT SURVEY CONTROL LT0652 ___________________________________________________________________ LT0652* NAD 83(1994)- 40 14 21.53207(N) 121 01 57.23462(W) ADJUSTED LT0652* NAVD 88 - 2278.5 (meters) 7475. (feet) VERTCON LT0652 ___________________________________________________________________ LT0652 LAPLACE CORR- 8.92 (seconds) DEFLEC99 LT0652 GEOID HEIGHT- -23.25 (meters) GEOID99 LT0652 LT0652 HORZ ORDER - SECOND LT0652 LT0652.The horizontal coordinates were established by classical geodetic methods LT0652.and adjusted by the National Geodetic Survey in June 1998. LT0652 LT0652.The NAVD 88 height was computed by applying the VERTCON shift value to LT0652.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0652 LT0652.The Laplace correction was computed from DEFLEC99 derived deflections. LT0652 LT0652.The geoid height was determined by GEOID99. LT0652 LT0652; North East Units Scale Converg. LT0652;SPC CA 1 - 601,053.129 2,082,317.943 MT 0.99994833 +0 37 57.3 LT0652;SPC CA 1 - 1,971,955.14 6,831,738.12 sFT 0.99994833 +0 37 57.3 LT0652;UTM 10 - 4,456,175.881 667,357.415 MT 0.99994479 +1 16 16.4 LT0652 LT0652: Primary Azimuth Mark Grid Az LT0652:SPC CA 1 - DYER AZ MK 139 30 12.6 LT0652:UTM 10 - DYER AZ MK 138 51 53.5 LT0652 LT0652|---------------------------------------------------------------------| LT0652| PID Reference Object Distance Geod. Az | LT0652| dddmmss.s | LT0652| DB7220 DYER RM 1 4.881 METERS 11502 | LT0652| DB7219 DYER AZ MK 1400809.9 | LT0652| DB7221 DYER RM 2 16.785 METERS 18905 | LT0652| DB7223 DYER RM 2 31.115 METERS 19514 | LT0652| LT0654 DYER MOUNTAIN LOT 1948 29.590 METERS 20041 | LT0652| DB7222 DYER MOUNTAIN LOT NW CORNER 20625 | LT0652| LT0648 CHESTER STACK APPROX.19.3 KM 2913418.2 | LT0652|---------------------------------------------------------------------| LT0652 LT0652 SUPERSEDED SURVEY CONTROL LT0652 LT0652 NAD 83(1992)- 40 14 21.53207(N) 121 01 57.23462(W) AD(1991.35) 2 LT0652 NAD 83(1986)- 40 14 21.53328(N) 121 01 57.23256(W) AD(1984.00) 2 LT0652 NAD 27 - 40 14 21.93700(N) 121 01 53.37700(W) AD( ) 2 LT0652 NGVD 29 - 2277.5 (m) 7472. (f) VERT ANG LT0652 LT0652.Superseded values are not recommended for survey control. LT0652.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0652.See file dsdata.txt to determine how the superseded data were derived. LT0652 LT0652_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION LT0652_SETTING: 66 = SET IN ROCK OUTCROP LT0652 LT0652 HISTORY - Date Condition Report By LT0652 HISTORY - 1948 MONUMENTED CGS LT0652 HISTORY - 1949 SEE DESCRIPTION CGS LT0652 HISTORY - 1975 SEE DESCRIPTION NGS LT0652 LT0652 STATION DESCRIPTION LT0652 LT0652'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) LT0652'THE STATION IS LOCATED ON DYER PEAK, ABOUT 5 MILES SOUTH LT0652'SOUTHWEST OF WESTWOOD, 5 MILES EAST OF LAKE ALMANOR AND LT0652'10 MILES NORTH NORTHWEST OF GREENVILLE. LT0652' LT0652'STATION MARK IS A STANDARD DISK, STAMPED DYER 1948, SET IN LT0652'OUTCROPPING BEDROCK THAT PROJECTS 2 INCHES. IT IS ON A LT0652'LARGE ROCK OUTCROP ABOUT 5 FEET ABOVE THE ROAD THAT LEADS LT0652'TO THE LOOKOUT. LT0652' LT0652'REFERENCE MARK NUMBER 1 IS A STANDARD DISK, STAMPED DYER LT0652'NO 1 1948, SET IN OUTCROPPING BEDROCK THAT PROJECTS 18 LT0652'INCHES AND IS 6 INCHES HIGHER THAN THE STATION. LT0652' LT0652'REFERENCE MARK NUMBER 2 IS A STANDARD DISK, STAMPED DYER LT0652'NO 2 1948, SET IN OUTCROPPING BEDROCK THAT PROJECTS 3 FEET LT0652'AND IS 6 INCHES LOWER THAN THE STATION. LT0652' LT0652'AZIMUTH MARK IS A STANDARD DISK, STAMPED DYER 1948, SET IN LT0652'OUTCROPPING BEDROCK AND 50 FEET LOWER THAN THE TOP OF A LT0652'PROMINENT ROCKY POINT ABOUT 0.3 MILE SOUTH SOUTHEAST OF THE LT0652'STATION. TO REACH FROM THE STATION WALK ACROSS SADDLE TO THE LT0652'FIRST ROCKY POINT SOUTH SOUTHEAST OF THE STATION. IT IS ABOUT LT0652'A 10 MINUTE WALK. LT0652' LT0652'B.M. (USGS) IS A U.S. GEOLOGICAL SURVEY BENCH MARK AND NOT LT0652'STAMPED. IT IS SET IN OUTCROPPING BEDROCK FLUSH WITH THE LT0652'GROUND AND 5 FEET SOUTH OF THE LOOKOUT TOWER. LT0652' LT0652'R.M. 2 (USGS) IS A U.S. GEOLOGICAL SURVEY REFERENCE MARK, LT0652'STAMPED NO 2, SET IN THE CONCRETE BASE OF THE SOUTHEAST LT0652'CORNER OF THE LOOKOUT TOWER. IT PROJECTS 3 FEET ABOVE THE LT0652'GROUND AND IS THE SAME ELEVATION AS THE STATION. LT0652' LT0652'DYER MTN. L.O. IS A WOODEN TWO STORY STRUCTURE, 14 FEET LT0652'SQUARE AND ABOUT 40 FEET IN HEIGHT. IT HAS A SLOPING ROOF LT0652'WITH A SPIKE ON TOP. THE DISTANCE WAS MADE TO THE CENTER LT0652'OF THE BASE AND THE DIRECTION WAS MADE TO THE SPIKE ON TOP. LT0652' LT0652'THE STATION IS REACHED AS FOLLOWS--FROM THE U.S. POST OFFICE LT0652'IN SUSANVILLE GO WEST ON STATE HIGHWAY 36 FOR 24.2 MILES. LT0652'TURN LEFT, SOUTH, AS PER SIGN QUINCY AND GO 0.6 MILE. TURN LT0652'LEFT, EAST, AND GO 0.8 MILE. TURN RIGHT AS PER SIGN DYER MTN. LT0652'L.O. 9-1/4 AND GO 1.1 MILES. TAKE RIGHT FORK AFTER CROSSING LT0652'R.R. TRACKS AND GO 0.4 MILE. TAKE RIGHT FORK AND GO 0.4 LT0652'MILE. TAKE LEFT FORK AS PER SIGN DYER MTN. L.O. 6.4 AND LT0652'FOLLOW THE MAIN TRAVELED ROAD FOR 7.5 MILES TO THE LOOKOUT LT0652'TOWER AND STATION. LT0652 LT0652 STATION RECOVERY (1949) LT0652 LT0652'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1949 (WRH) LT0652'THE STATION WAS RECOVERED AS DESCRIBED. ALL THE MARKS WERE LT0652'IN GOOD CONDITION. A COMPLETE DESCRIPTION FOLLOWS. LT0652' LT0652'THE STATION IS LOCATED ON THE SUMMIT OF DYER MOUNTAIN. IT IS LT0652'ABOUT 5 MILES AIRLINE SOUTH OF WESTWOOD, ABOUT 8 MILES AIRLINE LT0652'NORTH-NORTHWEST OF GREENVILLE, AND ABOUT 10 MILES AIRLINE LT0652'SOUTHEAST OF CHESTER. THE DYER MOUINTAIN LOOKOUT TOWER IS ON LT0652'THE SAME PEAK. LT0652' LT0652'THE STATION IS 14.5 FEET WEST-SOUTHWEST OF THE FLAG POLE, LT0652'24 FEET EAST OF THE CENTER LINE OF THE ROAD. IT IS A STANDARD LT0652'DISK SET IN A DRILL HOLE IN BEDROCK THAT PROJECTS 8 INCHES LT0652'ABOVE THE GROUND. THE DISK IS STAMPED--DYER 1948. LT0652' LT0652'REFERENCE MARK NUMBER ONE IS 12.5 FEET SOUTH OF THE FLAG LT0652'POLE AND IS ABOUT THE SAME ELEVATION AS THE STATION. IT IS LT0652'A STANDARD DISK SET IN A DRILL HOLE IN BEDROCK THAT PROJECTS LT0652'8 INCHES ABOVE THE GROUND. THE DISK IS STAMPED--DYER NO 1 1948. LT0652' LT0652'REFERENCE MARK NUMBER TWO IS 32 FEET NORTHEAST OF THE NORTHEAST LT0652'CORNER OF THE LOOKOUT TOWER. IT IS A STANDARD DISK SET IN LT0652'A DRILL HOLE IN A SMALL BEDROCK PINNACLE THAT PROJECTS ABOUT LT0652'2 FEET ABOVE THE GROUND AND IS ABOUT 2 FEET LOWER THAN THE LT0652'STATION. THE DISK IS STAMPED--DYER NO 2 1948. LT0652' LT0652'R.M. NO 2 (USGS) IS A STANDARD USGS DISK SET IN A DRILL HOLE LT0652'IN THE SOUTHEAST FOUNDATION OF THE LOOKOUT TOWER AND IS ABOUT LT0652'2-1/2 FEET ABOVE THE ROUND. THE DISK IS STAMPED--NO 2 1935. LT0652' LT0652'THE AZIMUTH MARK IS ON THE NORTHWEST SIDE OF THE FIRST HIGH LT0652'PEAK THAT IS SOUTHEAST OF THE STATION. IT IS ABOUT 4 FEET LT0652'LOWER THAN THE HIGHEST POINT OF THE PEAK. IT IS A STANDARD LT0652'DISK SET IN A DRILL HOLE IN BEDROCK THAT PROJECTS 3 FEET ABOVE LT0652'THE GROUND. THE DISK IS STAMPED--DYER 1948. TO REACH THE LT0652'MARK FROM THE STATION PACK SOUTHEAST AND DOWN INTO A LOW LT0652'SADDLE THEN GO UP TO THE TOP OF THE FIRST PEAK AND THE MARK IS LT0652'ON THE NORTHWEST SIDE OF THE PEAK AS DESCRIBED. LT0652' LT0652'THE DYER MTN. LOOKOUT TOWER IS A TWO STORY WOODEN TOWER THAT IS LT0652'14 FEET SQUARE AT THE BASE AND IS ABOUT 30 FEET TALL. THE LT0652'OUTSIDE OF THE BUILDING IS PAINTED GREY. THE CENTER OF THE BASE LT0652'OF THE TOWER IS 0.68 METER HIGHER THAN THE STATION AND WILL LT0652'SERVICE AS THE SUBSTITUTE STATION. LT0652' LT0652'TO REACH THE STATION FROM THE POST OFFICE IN WESTWOOD GO LT0652'WEST ON THE PAVED ROAD FOR 1.1 MILE TO A ROAD ON THE LEFT. LT0652'TURN LEFT AS PER SIGN DYER MOUNTAIN L.O. 10 AND GO 1.1 MILES TO LT0652'A FORK. TAKE THE RIGHT FORK AS PER SIGN DYER MOUNTAIN L.O. LT0652'8 AND GO 8.3 MILES TO THE SUMMIT OF DYER MOUNTAIN, THE LOOKOUT LT0652'TOWER AND THE STATION AS DESCRIBED. LT0652 LT0652 STATION RECOVERY (1975) LT0652 LT0652'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN) LT0652'THE STATION MARK, AZIMUTH MARK, REFERENCE MARKS 1 AND 2, LT0652'REFERENCE MARK 2 (USGS), AND DYER MOUNTAIN LOOKOUT TOWER 1948 LT0652'WERE RECOVERED IN GOOD CONDITION. THE DISTANCES AND DIRECTIONS LT0652'TO REFERENCE MARK 1, REFERENCE MARK 2, AND REFERENCE MARK LT0652'2 (USGS) MEASURED ON THIS DATE AGREED FAIRLY WELL WITH THE 1948 LT0652'AND 1949 MEASUREMENTS BUT THE DISTANCE TO THE LOOKOUT AND LT0652'THE DIRECTIONS TO THE LOOKOUT AND THE AZIMUTH MARK DIFFERED LT0652'SOMEWHAT WITH THE FORMER MEASUREMENTS. THE PREVIOUS LT0652'DESCRIPTIONS ARE ADEQUATE. LT0652' LT0652'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--4-3/4 MILES LT0652'SSW OF WESTWOOD