National Geodetic Survey, Retrieval Date = SEPTEMBER 14, 2002 LT0680 *********************************************************************** LT0680 DESIGNATION - HARKNESS LT0680 PID - LT0680 LT0680 STATE/COUNTY- CA/PLUMAS LT0680 USGS QUAD - MT HARKNESS (1995) LT0680 LT0680 *CURRENT SURVEY CONTROL LT0680 ___________________________________________________________________ LT0680* NAD 83(1994)- 40 25 51.90116(N) 121 18 05.66165(W) ADJUSTED LT0680* NAVD 88 - 2453.3 (meters) 8049. (feet) VERTCON LT0680 ___________________________________________________________________ LT0680 LAPLACE CORR- 5.78 (seconds) DEFLEC99 LT0680 GEOID HEIGHT- -23.37 (meters) GEOID99 LT0680 LT0680 HORZ ORDER - SECOND LT0680 LT0680.The horizontal coordinates were established by classical geodetic methods LT0680.and adjusted by the National Geodetic Survey in June 1998. LT0680 LT0680.The NAVD 88 height was computed by applying the VERTCON shift value to LT0680.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0680 LT0680.The Laplace correction was computed from DEFLEC99 derived deflections. LT0680 LT0680.The geoid height was determined by GEOID99. LT0680 LT0680; North East Units Scale Converg. LT0680;SPC CA 1 - 622,127.698 2,059,259.256 MT 0.99991935 +0 27 24.1 LT0680;SPC CA 1 - 2,041,097.29 6,756,086.41 sFT 0.99991935 +0 27 24.1 LT0680;UTM 10 - 4,476,990.087 644,064.858 MT 0.99985548 +1 06 06.0 LT0680 LT0680: Primary Azimuth Mark Grid Az LT0680:SPC CA 1 - WHITE 284 36 01.7 LT0680:UTM 10 - WHITE 283 57 19.8 LT0680 LT0680|---------------------------------------------------------------------| LT0680| PID Reference Object Distance Geod. Az | LT0680| dddmmss.s | LT0680| LT0679 HARKNESS MOUNTAIN LOOKOUT 1948 10.655 METERS 00227 | LT0680| DB7865 HARKNESS RM 1 11.284 METERS 07013 | LT0680| LT0685 WHITE APPROX.14.4 KM 2850325.8 | LT0680| DB7866 HARKNESS RM 2 9.559 METERS 34142 | LT0680|---------------------------------------------------------------------| LT0680 LT0680 SUPERSEDED SURVEY CONTROL LT0680 LT0680 NAD 83(1992)- 40 25 51.90116(N) 121 18 05.66165(W) AD(1991.35) 2 LT0680 NAD 83(1986)- 40 25 51.90466(N) 121 18 05.66063(W) AD(1984.00) 2 LT0680 NAD 27 - 40 25 52.32000(N) 121 18 01.76500(W) AD( ) 2 LT0680 NGVD 29 - 2452.1 (m) 8045. (f) VERT ANG LT0680 LT0680.Superseded values are not recommended for survey control. LT0680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0680.See file dsdata.txt to determine how the superseded data were derived. LT0680 LT0680_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION LT0680_SETTING: 80 = SET IN A BOULDER LT0680 LT0680 HISTORY - Date Condition Report By LT0680 HISTORY - 1948 MONUMENTED CGS LT0680 HISTORY - 1972 SEE DESCRIPTION NGS LT0680 HISTORY - 19990805 GOOD USPSQD LT0680 LT0680 STATION DESCRIPTION LT0680 LT0680'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) LT0680'THE STATION IS LOCATED ON THE SUMMIT OF HARKNESS MOUNTAIN LT0680'THAT IS IN THE LASSEN NATIONAL PARK. IT IS ABOUT 16 MILES LT0680'AIRLINE NROTHEAST OF MINERAL AND ABOUT 9 MILES AIRLINE NORTHWEST LT0680'OF CHESTER. LT0680' LT0680'THE STATION IS A STANDARD STATION DISK THAT IS SET IN A DRILL LT0680'HOLE IN A BOULDER THAT PROJECTS ABOUT 4 INCHES ABOVE THE LT0680'GROUND. IT IS 35 FEET SOUTH OF THE CENTER OF THE LOOKOUT. LT0680'THE DISK IS STAMPED HARKNESS 1948. LT0680' LT0680'REFERENCE MARK NUMBER ONE IS A STANDARD REFEFERENE DISK THAT LT0680'IS SET IN A DRILL HOLE IN THE TOP OF A BOULDER THAT PROJECTS LT0680'3 INCHES ABOVE THE GROUND (AS DESCRIBED IN NOTE 12C). IT IS LT0680'30 FEET EAST SOUTHEAST OF THE SOUTHEAST CORNER OF THE LOOKOUT LT0680'HOUSE, AND IS ABOUT 2 FEET HIGHER THAN THE STATION. THE DISK LT0680'IS STAMPED HARKNESS NO 1 1948. LT0680' LT0680'REFERENCE MARK NUMBER TWO IS A STANDARD REFERENCE MARK DISK LT0680'THAT IS SET IN A DRILL HOLE IN THE SOUTHWEST CORNER OF THE LT0680'CONCRETE PLATFORM THAT THE FLAMO GAS TANKS SET ON. THE MARK LT0680'IS 3 FEET NORTHWEST OF THE SOUTHWEST CORNER OF THE LOOKOUT LT0680'HOUSE AND ABOUT 2 FEET HIGHER THAN THE STATION. THE DISK IS LT0680'STAMPED HARKNESS NO 2 1948., LT0680' LT0680'THE STATION WHITE WILL SERVE AS THE AZIMUTH MARK. FOR THE LT0680'DESCRIPTION OF THE MARK SEE THE DESCRIPTION FOR STATION WHITE. LT0680' LT0680'THE HARKNESS MTN. L.O. IS A TWO STORY STONE BUILDING THAT LT0680'IS ABOUT 16 FEET SQUARE AT ITS BASE. IT HAS AN OBSERVATION LT0680'PLATFORM THAT CIRCLES THE BUILDING AT THE LEVEL OF THE UPPER LT0680'STORY FLOOR. THIS LOOKOUT IS OPERATED BY THE U.S. DEPARTMENT LT0680'OF INTERIOR, PARK SERVICE. LT0680' LT0680'TO REACH THE STATION FROM THE U.S. POST OFFICE IN CHESTER GO LT0680'WEST FOR 0.05 MILE TO A FORK. TAKE THE RIGHT FORK AS PER LT0680'SIGN JUNIPER LAKE 14 AND GO 0.7 MILE TO A FORK. KEEP THE LT0680'RIGHT FORK, NORTH, AS PER SIGN JUNIPER LAKE AND GO 3.8 MILES LT0680'TO A FORK. TAKE THE LEFT FORK, NORTH, AND GO 7.35 MILES TO LT0680'A TRACK ROAD LEFT. TURN LEFT AS PER SIGN MT. HARKNESS LOOKOUT LT0680'STATION 2 MI. AND GO SOUTHWEST AND SOUTH FOR 0.2 MILE TO THE LT0680'END OF THE ROAD. FROM THIS POINT PACK ALONG THE WELL MARKED LT0680'TRAIL TO THE SUMMIT AND THE LOOKOUT AND THE STATION AS LT0680'DESCRIBED. LT0680 LT0680 STATION RECOVERY (1972) LT0680 LT0680'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (PRL) LT0680'THE STATION WAS VISITED BY A LIGHT KEEPER. LT0680' LT0680'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED. LT0680' LT0680'HEIGHT OF LIGHT ABOVE STATION MARK 5 FEET. LT0680 LT0680 STATION RECOVERY (1999) LT0680 LT0680'RECOVERY NOTE BY US POWER SQUADRON 1999 LT0680'RECOVERED IN GOOD CONDITION.