National Geodetic Survey, Retrieval Date = SEPTEMBER 19, 2002 MW0510 *********************************************************************** MW0510 DESIGNATION - LITTLE HOFFMAN MW0510 PID - MW0510 MW0510 STATE/COUNTY- CA/SISKIYOU MW0510 USGS QUAD - LITTLE GLASS MTN (1988) MW0510 MW0510 *CURRENT SURVEY CONTROL MW0510 ___________________________________________________________________ MW0510* NAD 83(1992)- 41 34 43.35840(N) 121 39 29.92658(W) ADJUSTED MW0510* NAVD 88 - 2229.482 (meters) 7314.56 (feet) ADJUSTED MW0510 ___________________________________________________________________ MW0510 EPOCH DATE - 1991.35 MW0510 LAPLACE CORR- 5.83 (seconds) DEFLEC99 MW0510 GEOID HEIGHT- -22.75 (meters) GEOID99 MW0510 DYNAMIC HT - 2227.709 (meters) 7308.74 (feet) COMP MW0510 MODELED GRAV- 979,745.4 (mgal) NAVD 88 MW0510 MW0510 HORZ ORDER - SECOND MW0510 VERT ORDER - SECOND CLASS 0 MW0510 MW0510.The horizontal coordinates were established by classical geodetic methods MW0510.and adjusted by the National Geodetic Survey in March 1994. MW0510.The horizontal coordinates are valid at the epoch date displayed above. MW0510.The epoch date for horizontal control is a decimal equivalence MW0510.of Year/Month/Day. MW0510 MW0510.The orthometric height was determined by differential leveling MW0510.and adjusted by the National Geodetic Survey in June 1991. MW0510 MW0510.The Laplace correction was computed from DEFLEC99 derived deflections. MW0510 MW0510.The geoid height was determined by GEOID99. MW0510 MW0510.The dynamic height is computed by dividing the NAVD 88 MW0510.geopotential number by the normal gravity value computed on the MW0510.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 MW0510.degrees latitude (g = 980.6199 gals.). MW0510 MW0510.The modeled gravity was interpolated from observed gravity values. MW0510 MW0510; North East Units Scale Converg. MW0510;SPC CA 1 - 749,384.920 2,028,494.314 MT 0.99997885 +0 13 24.3 MW0510;SPC CA 1 - 2,458,607.03 6,655,151.76 sFT 0.99997885 +0 13 24.3 MW0510;UTM 10 - 4,603,871.837 611,846.462 MT 0.99975394 +0 53 25.8 MW0510 MW0510: Primary Azimuth Mark Grid Az MW0510:SPC CA 1 - LITTLE HOFFMAN AZ MK 272 09 25.6 MW0510:UTM 10 - LITTLE HOFFMAN AZ MK 271 29 24.1 MW0510 MW0510|---------------------------------------------------------------------| MW0510| PID Reference Object Distance Geod. Az | MW0510| dddmmss.s | MW0510| CD7860 LITTLE HOFFMAN RM 3 10.281 METERS 00225 | MW0510| MW0917 LITTLE HOFFMAN LOH 1948 6.092 METERS 09702 | MW0510| MW0511 LITTLE HOFFMAN RM 1 6.663 METERS 26513 | MW0510| CD7858 LITTLE HOFFMAN AZ MK 2722249.9 | MW0510| CD7861 LITTLE HOFFMAN RM 4 10.527 METERS 29427 | MW0510| CD7859 LITTLE HOFFMAN RM 2 9.408 METERS 35013 | MW0510|---------------------------------------------------------------------| MW0510 MW0510 SUPERSEDED SURVEY CONTROL MW0510 MW0510 NAD 83(1986)- 41 34 43.36036(N) 121 39 29.92391(W) AD(1984.00) 2 MW0510 NAD 27 - 41 34 43.79400(N) 121 39 25.92900(W) AD( ) 2 MW0510 NGVD 29 - 2228.222 (m) 7310.43 (f) ADJUSTED 2 0 MW0510 MW0510.Superseded values are not recommended for survey control. MW0510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. MW0510.See file dsdata.txt to determine how the superseded data were derived. MW0510 MW0510_MARKER: DS = TRIANGULATION STATION DISK MW0510_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT MW0510_STAMPING: LITTLE HOFFMAN 1948 MW0510_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO MW0510+STABILITY: SURFACE MOTION MW0510 MW0510 HISTORY - Date Condition Report By MW0510 HISTORY - 1948 MONUMENTED CGS MW0510 HISTORY - 1954 SEE DESCRIPTION CGS MW0510 HISTORY - 1954 GOOD NGS MW0510 HISTORY - 1971 SEE DESCRIPTION USFS MW0510 HISTORY - 1974 SEE DESCRIPTION USFS MW0510 HISTORY - 1975 SEE DESCRIPTION NGS MW0510 MW0510 STATION DESCRIPTION MW0510 MW0510'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) MW0510'THE STATION IS ON THE HIGHEST POINT OF A PROMINENT BALD BUTTE MW0510'CALLED LITTLE MT. HOFFMAN. IT IS ABOUT 28 MILES SOUTH SOUTHWEST MW0510'OF THE TOWN OF TULELAKE, 28-1/2 MILES SOUTH OF THE MW0510'CALIFORNIA-OREGON BOUNDRY AND 41 MILES WEST NORTHWEST OF CANBY. MW0510' MW0510'THE STATION MARK, STAMPED LITTLE HOFFMAN 1948, IS A STANDARD MW0510'DISK BRAZED TO THE TOP OF A 1 INCH PIPE AND SET IN A SQUARE MW0510'CONCRETE POST THAT PROJECTS 1 INCH. IT IS 6.2 FEET NORTH NORTHWEST MW0510'OF A WITNESS POST AND 9.0 FEET WEST OF THE LOOKOUT HOUSE. MW0510' MW0510'REFERENCE MARK NUMBER 1, STAMPED LITTLE HOFFMAN NO 1 1948, MW0510'IS A STANDARD DISK AS DESCRIBED IN NOTE 12C. IT PROJECTS MW0510'2 INCHES AND IS 18 INCHES LOWER THAN THE STATION. MW0510' MW0510'REFERENCE MARK NUMBER 2, STAMPED LITTLE HOFFMAN NO 2 1948, MW0510'IS A STANDARD DISK AS DESCRIBED IN NOTE 12C. IT PROJECTS 2 MW0510'INCHES AND IS 6 INCHES LOWER THAN THE STATION. MW0510' MW0510'THE AZIMUTH MARK, STAMPED LITTLE HOFFMAN 1948, IS A STANDARD MW0510'DISK BRAZED TO THE TOP OF A 1 INCH PIPE THAT IS SET IN THE MW0510'GROUND 2-1/2 FEET AND PROJECTING 6 INCHES. IT IS 100 YARDS MW0510'NORTH OF THE BASE OF LITTLE GLASS MT., 27 FEET NORTH OF A MW0510'TREE WITH A TRIANGLE BLAZED ON IT AND 18 FEET SOUTH OF A GRAVEL MW0510'ROAD. TO REACH FROM THE STATION, TAKE ROAD EAST FOR 0.6 MW0510'MILE. TURN LEFT AND GO 1.4 MILES TO THE AZIMUTH MARK ON THE MW0510'LEFT SIDE OF ROAD. MW0510' MW0510'TO REACH THE STATION FROM THE RAILROAD DEPOT IN DORRIS, TAKE MW0510'GRAVEL ROAD EAST AND FOLLOW THE MAIN TRAVELED ROAD AND ALL SIGNS MW0510'TO MEDICINE LAKE FOR 37.2 MILES TO A FORK. TAKE THE LEFT FORK, MW0510'EAST, AND GO 3.4 MILES TO A FORK. TAKE RIGHT FORK AS PER SIGN MW0510'MT. HOFFMAN LOOKOUT AND GO 0.6 MILES TO THE TOP OF LITTLE MW0510'MT. HOFFMAN, THE LOOKOUT HOUSE AND THE STATION. MW0510' MW0510'LOOK OUT HOUSE, LITTLE HOFFMAN MTN., IS A WHITE, WOODEN, 12 MW0510'FEET BY 12 FEET HOUSE WITH A SLOPING ROOF AND A SPIKE ON TOP. MW0510'IT IS ABOUT 15 FEET HIGH WITH A CEMENT FOUNDATION. THE CENTER MW0510'OF THE HOUSE WAS MEASURED TO AND THE ANGLE WAS TAKEN TO THE MW0510'SPIKE ON TOP. MW0510 MW0510 STATION RECOVERY (1954) MW0510 MW0510'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EEJ) MW0510'THE STATION, R.M. 1, AND THE AZIMUTH MARK WERE FOUND IN GOOD MW0510'CONDITION AS DESCRIBED IN LITHO LIST 949, WITH THE FOLLOWING MW0510'EXCEPTION--THE STATION WAS MEASURED IN 1954 AS 12.9 FEET SOUTHWEST MW0510'OF THE NORTHWEST CORNER OF THE LOOKOUT, AND 5.6 FEET NORTHWEST MW0510'OF A WITNESS POST. MW0510' MW0510'A THOROUGH SEARCH WAS MADE FOR R.M. 2 BUT IT WAS NOT RECOVERED. MW0510' MW0510'TO REACH FROM MEDICINE LAKE GUARD STATION GO 2.4 MILES WEST MW0510'ALONG A GRADED ROAD. THEN 0.6 MILE WEST ALONG THE ROAD TO LITTLE MW0510'HOFFMAN AND THE STATION. MW0510' MW0510'TO REACH THE AZIMUTH MARK FROM THE STATION GO 0.6 MILE EAST MW0510'TO THE JUNCTION OF A GRADED ROAD. TURN LEFT AND GO 1.45 MILES MW0510'WEST TO THE AZIMUTH MARK ON THE LEFT SIDE OF THE ROAD. MW0510 MW0510 STATION RECOVERY (1954) MW0510 MW0510'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1954 MW0510'3 MI W FROM MEDICINE LAKE. MW0510'2.4 MILES WEST ALONG A GRADED ROAD FROM MEDICINE LAKE GUARD MW0510'STATION, THENCE 0.6 MILE SOUTHWEST ALONG THE ROAD TO LITTLE MW0510'MT. HOFFMAN LOOKOUT, AT THE LOOKOUT, 22.0 FEET EAST OF LITTLE MW0510'HOFFMAN R.M. 1, 12.9 FEET SOUTHWEST OF THE NORTHWEST CORNER MW0510'OF THE LOOKOUT, 6.3 FEET SOUTHWEST OF THE BASE OF THE FLAG MW0510'POLE, 5.6 FEET NORTHWEST OF A WITNESS POST, ABOUT 2 FEET HIGHER MW0510'THAN THE ROAD, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH MW0510'THE GROUND. MW0510 MW0510 STATION RECOVERY (1971) MW0510 MW0510'RECOVERY NOTE BY US FOREST SERVICE 1971 (JS) MW0510'LITTLE HOFFMAN 1948-GOOD. MW0510' MW0510'NEITHER REF. MARK WAS RECOVERED. ALSO DID NOT CHECK FOR AZM MARK. MW0510' MW0510'WE DID NOT SEARCH TO HARD FOR R.M. 1 OR 2 OR AZM MARK. AS MW0510'WE USED TWIN VIEW (DOE PEAK) AND PORCUPINE BUTTE AS CONTROL. MW0510'BOTH THOSE STATIONS WERE IN GOOD CONDITION. ALSO VISITED LOST MW0510'SPRING AND DID NOT RECOVER EITHER R.M. BUT STATION ITSELF WAS IN MW0510'GOOD CONDITION MW0510 MW0510 STATION RECOVERY (1974) MW0510 MW0510'RECOVERY NOTE BY US FOREST SERVICE 1974 (JS) MW0510'LITTLE HOFFMAN 1948-FAIR. MW0510' MW0510'R.M. NOT FOUND. - TOURIST MW0510' MW0510'R.M. WAS SEARCHED FOR BY ANGLE AND DIST. BUT WERE NOT FOUND. MW0510' MW0510'AZM MARK WAS NOT SEARCHED FOR. MW0510 MW0510 STATION RECOVERY (1975) MW0510 MW0510'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN) MW0510'THE STATION MARK AND AZIMUTH MARK WERE RECOVERED IN GOOD CONDITION. MW0510'REFERENCE MARKS 1 AND 2 WERE NOT FOUND AND HAVE EVIDENTLY MW0510'BEEN DESTROYED SO REFERENCE MARKS 3 AND 4 WERE SET ON THIS DATE. MW0510'LITTLE HOFFMAN LOOKOUT HOUSE 1948 WAS RECOVERED IN GOOD CONDITION MW0510'AND THE DISTANCE AND DIRECTION TO IT MEASURED ON THIS DATE MW0510'AGREED WITH THE 1948 MEASUREMENTS. THE PREVIOUS DESCRIPTIONS MW0510'ARE ADEQUATE WITH THE FOLLOWING ADDITIONS-- MW0510' MW0510'THE STATION MARK IS 15.5 FEET NORTHWEST OF THE SOUTHWEST MW0510'CORNER OF THE LOOKOUT HOUSE AND 13.9 FEET SOUTHWEST OF THE MW0510'NORTHWEST CORNER OF THE LOOKOUT HOUSE. MW0510' MW0510'THE LOOKOUT HOUSE IS A 14-FOOT-SQUARE WOODEN BUILDING. MW0510' MW0510'REFERENCE MARK 3 IS AN NGS REFERENCE MARK DISK STAMPED LITTLE MW0510'HOFFMAN 1948 NO 3 1975 EPOXIED IN A DRILL HOLE IN THE TOP OF MW0510'A BOULDER FLUSH WITH THE GROUND AND IS 31.0 FEET NORTHWEST MW0510'OF THE NORTHWEST CORNER OF THE LOOKOUT HOUSE AND ABOUT 1 FOOT MW0510'LOWER THAN THE STATION MARK. MW0510' MW0510'REFERENCE MARK 4 IS AN NGS REFERENCE MARK DISK STAMPED LITTLE MW0510'HOFFMAN 1948 NO 4 1975 EPOXIED IN A DRILL HOLE IN THE TOP OF MW0510'A BOULDER FLUSH WITH THE GROUND AND IS 38.4 FEET WEST OF THE MW0510'NORTHWEST CORNER OF THE LOOKOUT HOUSE, 1.4 FEET NORTHEAST OF A MW0510'4-INCH-SQUARE WOODEN POST, AND ABOUT 1 FOOT LOWER THAN THE MW0510'STATION MARK. MW0510' MW0510'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--28 MILES MW0510'SSW OF TULELAKE