National Geodetic Survey, Retrieval Date = SEPTEMBER 19, 2002 MX1040 *********************************************************************** MX1040 DESIGNATION - BLACK BUTTE MX1040 PID - MX1040 MX1040 STATE/COUNTY- CA/SISKIYOU MX1040 USGS QUAD - CITY OF MOUNT SHASTA (1986) MX1040 MX1040 *CURRENT SURVEY CONTROL MX1040 ___________________________________________________________________ MX1040* NAD 83(1992)- 41 21 58.84254(N) 122 20 52.73640(W) ADJUSTED MX1040* NAVD 88 - 1930.7 (meters) 6334. (feet) VERTCON MX1040 ___________________________________________________________________ MX1040 EPOCH DATE - 1991.35 MX1040 LAPLACE CORR- 0.42 (seconds) DEFLEC99 MX1040 GEOID HEIGHT- -23.51 (meters) GEOID99 MX1040 MX1040 HORZ ORDER - SECOND MX1040 MX1040.The horizontal coordinates were established by classical geodetic methods MX1040.and adjusted by the National Geodetic Survey in March 1994. MX1040.The horizontal coordinates are valid at the epoch date displayed above. MX1040.The epoch date for horizontal control is a decimal equivalence MX1040.of Year/Month/Day. MX1040 MX1040.The NAVD 88 height was computed by applying the VERTCON shift value to MX1040.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) MX1040 MX1040.The Laplace correction was computed from DEFLEC99 derived deflections. MX1040 MX1040.The geoid height was determined by GEOID99. MX1040 MX1040; North East Units Scale Converg. MX1040;SPC CA 1 - 725,802.222 1,970,887.043 MT 0.99993757 -0 13 39.1 MX1040;SPC CA 1 - 2,381,236.12 6,466,151.91 sFT 0.99993757 -0 13 39.1 MX1040;UTM 10 - 4,579,631.205 554,531.091 MT 0.99963659 +0 25 51.3 MX1040 MX1040: Primary Azimuth Mark Grid Az MX1040:SPC CA 1 - BLACK BUTTE AZ MK 054 22 57.6 MX1040:UTM 10 - BLACK BUTTE AZ MK 053 43 27.2 MX1040 MX1040|---------------------------------------------------------------------| MX1040| PID Reference Object Distance Geod. Az | MX1040| dddmmss.s | MX1040| CD9075 BLACK BUTTE AZ MK 0540918.5 | MX1040| MX1039 MOTT AIRPORT BEACON APPROX.12.3 KM 1501208.2 | MX1040| MX1020 SEATTLE SAN FRAN AIRWAY BN 25A APPROX.18.0 KM 1503303.7 | MX1040| CD9076 BLACK BUTTE RM 1 3.549 METERS 18153 | MX1040| MX1038 BLACK BUTTE LOOKOUT HOUSE 22.900 METERS 32737 | MX1040| CD9077 BLACK BUTTE RM 2 6.935 METERS 33253 | MX1040|---------------------------------------------------------------------| MX1040 MX1040 SUPERSEDED SURVEY CONTROL MX1040 MX1040 NAD 83(1986)- 41 21 58.83961(N) 122 20 52.74059(W) AD(1984.00) 2 MX1040 NAD 27 - 41 21 59.29300(N) 122 20 48.69270(W) AD( ) 2 MX1040 NGVD 29 - 1929.6 (m) 6331. (f) VERT ANG MX1040 MX1040.Superseded values are not recommended for survey control. MX1040.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. MX1040.See file dsdata.txt to determine how the superseded data were derived. MX1040 MX1040_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION MX1040_SETTING: 80 = SET IN A BOULDER MX1040 MX1040 HISTORY - Date Condition Report By MX1040 HISTORY - 1952 MONUMENTED CGS MX1040 MX1040 STATION DESCRIPTION MX1040 MX1040'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (WRH) MX1040'THE STATION IS LOCATED NEAR THE BLACK BUTTE LOOKOUT HOUSE ON THE MX1040'SUMMIT OF BLACK BUTTE, A PROMINENT, ROCKY, CONICAL PEAK THAT IS MX1040'ABOUT 1/2 MILE EAST OF U.S. HIGHWAY 99, ABOUT 13 MILES AIRLINE MX1040'NORTHWEST OF MC CLOUD, ABOUT 4 MILES AIRLINE SOUTH-SOUTHEAST OF MX1040'WEED, AND ABOUT 4 MILES AIRLINE NORTH-NORTHWEST OF THE TOWN OF MX1040'MOUNT SHASTA. MX1040' MX1040'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 99 AND MX1040'97 AT THE NORTH EDGE OF WEED, GO SOUTH ON U.S. HIGHWAY 99 TOWARDS MX1040'DUNSMUIR FOR 1.7 MILES TO A SIDE ROAD ON THE LEFT. TURN LEFT MX1040'AS PER SIGN, BLACK BUTTE LOOKOUT AND GO 0.1 MILE TO A T-ROAD. MX1040'TURN RIGHT AND GO 0.5 MILE TO A SIDE ROAD ON THE LEFT. TURN MX1040'LEFT AS PER SIGN, BLACK BUTTE STATION AND GO 0.4 MILE TO A SIDE MX1040'ROAD ON THE RIGHT. TURN RIGHT AND GO 0.3 MILE TO SOME RAILROAD MX1040'TRACKS. CROSS THE TRACKS AND GO 0.1 MILE TO A FORK. KEEP MX1040'STRAIGHT AHEAD, LEFT, AS PER SIGN, BLACK BUTTE L.O. AND GO 1.8 MX1040'MILE TO A CROSS ROAD. KEEP STRAIGHT AHEAD AND GO 0.1 MILE TO MX1040'ANOTHER CROSS ROAD AND THE AZIMUTH MARK. TURN RIGHT AS PER MX1040'SIGN, BLACK BUTTE LOOKOUT AND GO 0.7 MILE TO THE END OF THE MX1040'ROAD. PACK SOUTHWEST ON A GOOD TRAIL ABOUT 2 HOURS TO THE TOP MX1040'OF THE PEAK, THE LOOKOUT HOUSE, AND THE STATION. MX1040' MX1040'THE STATION MARK IS A STANDARD DISK STAMPED, BLACK BUTTE 1952 MX1040'CEMENTED IN A DRILL HOLE IN A BOULDER THAT IS FLUSH WITH THE MX1040'SURROUNDING ROCKS. IT IS 18 FEET NORTH OF A GRANITE TABLET MX1040'ENGRAVED, IN MEMORY OF LEA JAMISON 1896-1949 THAT IS CEMENTED MX1040'TO SOME ROCKS. MX1040' MX1040'REFERENCE MARK NUMBER 1 IS A STANDARD DISK STAMPED, BLACK BUTTE MX1040'NO 1 1952 CEMENTED IN A DRILL HOLE IN A BOULDER THAT PROJECTS 8 MX1040'INCHES ABOVE THE SURROUNDING ROCKS AND IS 3 FEET LOWER THAN THE MX1040'STATION. MX1040' MX1040'REFERENCE MARK NUMBER 2 IS A STANDARD DISK STAMPED, BLACK BUTTE MX1040'NO 2 1952 CEMENTED IN A DRILL HOLE IN A BOULDER THAT PROJECTS 4 MX1040'FEET ABOVE THE SURROUNDING ROCKS AND IS 5 FEET HIGHER THAN THE MX1040'STATION. MX1040' MX1040'THE BLACK BUTTE LOOKOUT HOUSE IS A 12-FOOT SQUARE WOODEN BUILDING, MX1040'PAINTED GREY, ABOUT 15 FEET HIGH, AND IS BUILT ON THE HIGHEST MX1040'POINT OF THE PEAK THAT IS ABOUT 15 FEET HIGHER THAN THE STATION. MX1040' MX1040'THE AZIMUTH MARK IS A STANDARD DISK STAMPED, BLACK BUTTE 1952 MX1040'CEMENTED IN A DRILL HOLE IN A BOULDER THAT IS FLUSH WITH THE MX1040'GROUND. IT IS 20 FEET EAST OF A SIGN, BLACK BUTTE LOOKOUT AND 45 MX1040'FEET EAST-SOUTHEAST OF THE CENTER OF THE CROSS ROAD.