National Geodetic Survey, Retrieval Date = SEPTEMBER 12, 2002 LT0715 *********************************************************************** LT0715 DESIGNATION - DIGGER LT0715 PID - LT0715 LT0715 STATE/COUNTY- CA/TEHAMA LT0715 USGS QUAD - MANTON (1995) LT0715 LT0715 *CURRENT SURVEY CONTROL LT0715 ___________________________________________________________________ LT0715* NAD 83(1992)- 40 25 52.81257(N) 121 47 09.17292(W) ADJUSTED LT0715* NAVD 88 - 1226.7 (meters) 4025. (feet) VERTCON LT0715 ___________________________________________________________________ LT0715 EPOCH DATE - 1991.35 LT0715 LAPLACE CORR- 15.46 (seconds) DEFLEC99 LT0715 GEOID HEIGHT- -25.13 (meters) GEOID99 LT0715 LT0715 HORZ ORDER - SECOND LT0715 LT0715.The horizontal coordinates were established by classical geodetic methods LT0715.and adjusted by the National Geodetic Survey in March 1994. LT0715.The horizontal coordinates are valid at the epoch date displayed above. LT0715.The epoch date for horizontal control is a decimal equivalence LT0715.of Year/Month/Day. LT0715 LT0715.The NAVD 88 height was computed by applying the VERTCON shift value to LT0715.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0715 LT0715.The Laplace correction was computed from DEFLEC99 derived deflections. LT0715 LT0715.The geoid height was determined by GEOID99. LT0715 LT0715; North East Units Scale Converg. LT0715;SPC CA 1 - 621,941.834 2,018,167.366 MT 0.99991932 +0 08 24.0 LT0715;SPC CA 1 - 2,040,487.50 6,621,270.77 sFT 0.99991932 +0 08 24.0 LT0715;UTM 10 - 4,476,340.867 602,983.009 MT 0.99973055 +0 47 14.9 LT0715 LT0715: Primary Azimuth Mark Grid Az LT0715:SPC CA 1 - DIGGER AZ MK 081 09 45.8 LT0715:UTM 10 - DIGGER AZ MK 080 30 54.9 LT0715 LT0715|---------------------------------------------------------------------| LT0715| PID Reference Object Distance Geod. Az | LT0715| dddmmss.s | LT0715| DB7184 DIGGER AZ MK 0811809.8 | LT0715| DB7185 DIGGER RM 1 3.094 METERS 15922 | LT0715| LT0716 DIGGER BUTTE LOT 1948 7.084 METERS 23727 | LT0715| DB7186 DIGGER RM 2 3.640 METERS 26841 | LT0715|---------------------------------------------------------------------| LT0715 LT0715 SUPERSEDED SURVEY CONTROL LT0715 LT0715 NAD 83(1986)- 40 25 52.81229(N) 121 47 09.17268(W) AD(1984.00) 2 LT0715 NAD 27 - 40 25 53.25200(N) 121 47 05.21000(W) AD( ) 2 LT0715 NGVD 29 - 1225.8 (m) 4022. (f) VERT ANG LT0715 LT0715.Superseded values are not recommended for survey control. LT0715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0715.See file dsdata.txt to determine how the superseded data were derived. LT0715 LT0715_MARKER: Z = SEE DESCRIPTION LT0715_SETTING: 0 = UNSPECIFIED SETTING LT0715 LT0715 HISTORY - Date Condition Report By LT0715 HISTORY - 1948 MONUMENTED CGS LT0715 HISTORY - 1972 SEE DESCRIPTION NGS LT0715 HISTORY - 1974 SEE DESCRIPTION NGS LT0715 LT0715 STATION DESCRIPTION LT0715 LT0715'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) LT0715'THE STATION IS LOCATED ON THE SUMMIT OF A ROCKY BUTTE THAT IS LT0715'LOCALLY KNOWN AS DIGGER OR FORWARD BUTTE, THIS IS THE SAME BUTTE LT0715'THAT THE CALIFORNIA STATE FOREST SERVICE LOOKOUT TOWER, DIGGER LT0715'BUTTE, IS ON. IT IS ABOUT 7.5 MILES AIRLINE SOUTHWEST OF THE LT0715'TOWN OF VIOLA, ABOUT 3 MILES AIRLINE WEST OF FORWARD MILL AND LT0715'ABOUT 15.5 MILES AIRLINE WEST SOUTHWEST OF THE SUMMIT OF MOUNT LT0715'LASSEN. LT0715' LT0715'THE STATION IS A STANDARD USGS STATION DISK THAT IS SET IN A DRILL LT0715'HOLE IN SOLID ROCK THAT PROJECTS ABOUT 2 FEET. IT IS 4 FEET LT0715'NORTHWEST OF A SMALL WHITE ENCLOSURE AND 7 FEET EAST OF A WHITE LT0715'POST. THE DISK IS STAMPED DIGGER 1933. LT0715' LT0715'REFERENCE MARK NUMBER ONE IS A STANDARD USGS REFERENCE MARK DISK LT0715'THAT IS SET IN A DRILL HOLE IN A DEPRESSION IN SOLID ROCK. IT LT0715'IS ABOUT 4 FEET LOWER THAN THE STATION AND IS 17 FEET EAST OF LT0715'THE LOOKOUT TOWER. THE DISK IS STAMPED NO 1. LT0715' LT0715'REFERENCE MARK NUMBER TWO IS A STANDARD USGS REFERENCE MARK DISK LT0715'THAT IS SET IN A DRILL HOLE IN A DEPRESSION IN SOLID ROCK THAT LT0715'PROJECTS ABOUT 6 INCHES. IT IS ABOUT 15 FEET EAST SOUTHEAST OF LT0715'THE LOOKOUT TOWER, AND 3 FEET WEST OF A WHITE POST. THE DISK IS LT0715'STAMPED NO 2. LT0715' LT0715'THE AZIMUTH MARK IS A STANDARD AZIMUTH MARK DISK THAT IS SET IN LT0715'A DRILL HOLE IN THE TOP OF A BOULDER THAT PROJECTS 11 INCHES. LT0715'IT IS SET AS DESCRIBED IN NOTE 12C. THE MARK IS 100 YARDS WEST LT0715'OF A ROAD FORK, 20 FEET NORTH NORTHWEST OF THE CENTERLINE OF THE LT0715'ROAD AND 31 FEET NORTH NORTHEAST OF THE INTERSECTION OF A TRACK LT0715'ROAD. THE DISK IS STAMPED DIGGER (USGS) 1948. TO REACH THE LT0715'MARK FROM THE STATION GO EASTERLY AND DOWN GRADE FOR 1.1 MILES LT0715'TO A T-ROAD. TURN LEFT, NORTHERLY, AND GO 1.0 MILE TO THE LT0715'MARK ON THE LEFT AS DESCRIBED. LT0715' LT0715'THE DIGGER BUTTE LOOKOUT TOWER IS A STEEL TOWER THAT IS 20 FEET LT0715'HIGH AND HAS A 12 FOOT BY 12 FOOT WOOD BUILDING ON ITS TOP. LT0715'THERE IS A SMALL WHITE BUILDING WITH A WATER TANK IN IT THAT IS LT0715'SETTING NORTHEAST OF THE CENTER OF THE BASE OF THE TOWER. THIS LT0715'TOWER IS REACHED FROM THE PARKING LOT BY CLIMBING ABOUT 150 FEET LT0715'OF ROCK STAIRWAY. LT0715' LT0715'TO REACH THE STATION FROM VIOLA GO SOUTH ON THE MINERAL ROAD FOR LT0715'0.3 MILE TO A FORK THAT IS JUST AFTER CROSSING BAILY CREEK. TAKE LT0715'THE RIGHT FORK AND GO 4.8 MILES TO A FORK. TURN RIGHT AS PER LT0715'SIGN FORWARD MILL AND GO 3.8 MILES TO THE MILL AND A FORK THAT IS LT0715'TO THE LEFT OF THE LARGE CONVEYOR. TAKE THE LEFT FORK AND GO 0.9 LT0715'MILE TO A FORK. TAKE THE RIGHT FORK AND GO 1.0 MILE TO A FORK LT0715'AND THE AZIMUTH MARK ON THE RIGHT. TAKE THE LEFT FORK AND GO LT0715'1.0 MILE TO A SIDE ROAD. TURN RIGHT, WEST, AND GO 1.1 MILE UP LT0715'GRADE TO THE PARKING LOT AND TURNAROUND. FROM THIS POINT LT0715'CLIMB THE STAIRWAY TO THE LOOKOUT TOWER AND THE STATION AS LT0715'DESCRIBED. LT0715 LT0715 STATION RECOVERY (1972) LT0715 LT0715'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (PRL) LT0715'THE STATION, R.M. 1 AND R.M. 2 WERE RECOVERED AS DESCRIBED. LT0715'THE AZIMUTH MARK WAS NOT SEARCHED FOR. LT0715' LT0715'THE DESCRIPTION IS ADEQUATE. LT0715' LT0715'HEIGHT OF LIGHT ABOVE STATION MARK 3 FEET. LT0715' LT0715'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--7.5 MILES LT0715'SOUTHEAST OF VIOLA LT0715 LT0715 STATION RECOVERY (1974) LT0715 LT0715'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (PRL) LT0715'THE STATION VISITED BY LIGHT KEEPER. STATION MARK, REFERENCE LT0715'MARK 1, AND REFERENCE MARK 2 RECOVERED AS DESCRIBED. DESCRIPTION LT0715'IS ADEQUATE. LT0715' LT0715'HEIGHT OF LIGHT ABOVE STATION MARK 0.3 FEET. LT0715' LT0715'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--7.5 MILES LT0715'SOUTHWEST OF VIOLA