National Geodetic Survey, Retrieval Date = SEPTEMBER 22, 2002 LU2206 *********************************************************************** LU2206 DESIGNATION - CHALKY LU2206 PID - LU2206 LU2206 STATE/COUNTY- CA/HUMBOLDT LU2206 USGS QUAD - BRIDGEVILLE (1969) LU2206 LU2206 *CURRENT SURVEY CONTROL LU2206 ___________________________________________________________________ LU2206* NAD 83(1992)- 40 25 40.34999(N) 123 49 44.91574(W) ADJUSTED LU2206* NAVD 88 - 942.2 (meters) 3091. (feet) VERTCON LU2206 ___________________________________________________________________ LU2206 EPOCH DATE - 1991.35 LU2206 LAPLACE CORR- 9.28 (seconds) DEFLEC99 LU2206 GEOID HEIGHT- -29.82 (meters) GEOID99 LU2206 LU2206 HORZ ORDER - SECOND LU2206 LU2206.The horizontal coordinates were established by classical geodetic methods LU2206.and adjusted by the National Geodetic Survey in March 1994. LU2206.The horizontal coordinates are valid at the epoch date displayed above. LU2206.The epoch date for horizontal control is a decimal equivalence LU2206.of Year/Month/Day. LU2206 LU2206.The NAVD 88 height was computed by applying the VERTCON shift value to LU2206.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LU2206 LU2206.The Laplace correction was computed from DEFLEC99 derived deflections. LU2206 LU2206.The geoid height was determined by GEOID99. LU2206 LU2206; North East Units Scale Converg. LU2206;SPC CA 1 - 623,155.157 1,844,805.414 MT 0.99991974 -1 11 45.8 LU2206;SPC CA 1 - 2,044,468.21 6,052,499.10 sFT 0.99991974 -1 11 45.8 LU2206;UTM 10 - 4,475,578.946 429,667.912 MT 0.99966089 -0 32 15.8 LU2206 LU2206: Primary Azimuth Mark Grid Az LU2206:SPC CA 1 - GRASSHOPPER LOOKOUT TOWER 224 25 43.9 LU2206:UTM 10 - GRASSHOPPER LOOKOUT TOWER 223 46 13.9 LU2206 LU2206|---------------------------------------------------------------------| LU2206| PID Reference Object Distance Geod. Az | LU2206| dddmmss.s | LU2206| DB5700 CHALKY RM 1 5.888 METERS 09231 | LU2206| DB5701 CHALKY RM 2 10.420 METERS 19535 | LU2206| LU2208 GRASSHOPPER LOOKOUT TOWER APPROX.18.5 KM 2231358.1 | LU2206|---------------------------------------------------------------------| LU2206 LU2206 SUPERSEDED SURVEY CONTROL LU2206 LU2206 NAD 83(1986)- 40 25 40.33090(N) 123 49 44.92686(W) AD(1984.00) 2 LU2206 NAD 27 - 40 25 40.82351(N) 123 49 40.78552(W) AD( ) 2 LU2206 NGVD 29 - 941.2 (m) 3088. (f) VERT ANG LU2206 LU2206.Superseded values are not recommended for survey control. LU2206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LU2206.See file dsdata.txt to determine how the superseded data were derived. LU2206 LU2206_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION LU2206_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT LU2206 LU2206 HISTORY - Date Condition Report By LU2206 HISTORY - 1961 MONUMENTED CGS LU2206 HISTORY - 1964 SEE DESCRIPTION CGS LU2206 LU2206 STATION DESCRIPTION LU2206 LU2206'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (JCC) LU2206'THE STATION IS ABOUT 1 MILE WEST OF A PINACLE KNOWN AS CHALK LU2206'ROCK, 3 MILES SOUTH-SOUTHWEST OF BRIDGEVILLE, 1-1/2 MILE LU2206'WEST-NORTHWEST OF THE RANCH HOME OF W. BARNWELL WHO OWNS THE LU2206'LAND AND ON THE HIGHEST POINT OF A DENSELY WOODED HILL WHICH IS LU2206'THE HIGHEST POINT IN THE CHALK MOUNTAINS. LU2206' LU2206'TO REACH THE STATION FROM THE BRIDGE SPANNING THE VAN DUZEN LU2206'RIVER IN BRIDGEVILLE, GO SOUTH AS PER SIGN BLOCKSBURG-ALDERPOINT LU2206'FOR 2.8 MILES TO A SIDE ROAD ON THE RIGHT. TURN RIGHT AND GO 0.5 LU2206'MILE TO THE RANCH HOUSE ON THE LEFT. CONTINUE STRAIGHT AHEAD, LU2206'WEST AND SOUTHWEST UP GRADE FOR 2.3 MILES TO ANOTHER RANCH LU2206'HOUSE ON THE LEFT. CONTINUE WESTERLY, UP GRADE FOR 0.85 MILE LU2206'TO A GATE. PASS THROUGH THE GATE AND CONTINUE STRAIGHT AHEAD LU2206'FOR 0.1 MILE TO A FORK. TAKE THE LEFT FORK, DOWN GRADE, FOR LU2206'0.3 MILE TO A GATE. PASS THROUGH THE GATE AND CONTINUE FOR LU2206'0.15 MILE TO A A DIM SIDE ROAD ON THE RIGHT AT A CURVE IN LU2206'THE ROAD. TURN RIGHT AND GO UP GRADE, SELECTING WAY THROUGH LU2206'TREES, FOR 0.1 MILE TO THE HIGHEST POINT AND THE STATION. LU2206' LU2206'THE STATION MARKS ARE STANDARD DISKS STAMPED CHALKY 1961. LU2206'THE SURFACE MARK IS SET IN THE TOP OF AN 11-INCH SQUARE CONCRETE LU2206'POST PROJECTING 4 INCHES. IT IS 14.2 FEET WEST OF AN OAK TREE LU2206'HAVING A TRIANGULAR BLAZE ON THE WEST SIDE. THE UNDERGROUND MARK LU2206'IS SET IN AN IRREGULAR MASS OF CONCRETE 30 INCHES BELOW THE LU2206'GROUND SURFACE. LU2206' LU2206'REFERENCE MARK 1 IS A STANDARD DISK SET IN THE TOP OF AN 11-INCH LU2206'SQUARE CONCRETE POST PROJECTING 2 INCHES. THE DISK IS STAMPED LU2206'CHALKY NO 1 1961. IT IS 14.2 FEET SOUTH-SOUTHEAST OF THE TREE LU2206'AND ABOUT 1 FOOT LOWER THAN THE STATION. LU2206' LU2206'REFERENCE MARK 2 IS A STANDARD DISK STAMPED CHALKY NO 2 1961 LU2206'CEMENTED IN A DRILL HOLE IN A 1-1/2 BY 2 FOOT ROCK OUTCROP LU2206'PROJECTING 6 INCHES. IT IS 47.2 FEET SOUTHWEST OF THE TREE AND LU2206'ABOUT 1 FOOT LOWER THAN THE STATION. LU2206' LU2206'NO SUITABLE LOCATION FOR AN AZIMUTH MARK. LU2206 LU2206 STATION RECOVERY (1964) LU2206 LU2206'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (JJL) LU2206'ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION. THE 1961 LU2206'DESCRIPTION NOT AVAILABLE AT THIS TIME. A NEW AND COMPLETE LU2206'DESCRIPTION FOLLOWS-- LU2206' LU2206'THE STATION IS LOCATED ABOUT 10 MILES NORTHEAST OF WEOTT, 3 MILES LU2206'SOUTH-SOUTHWEST OF BRIDGEVILLE, ON THE HIGHEST POINT OF A RANGE LU2206'OF MOUNTAINS LOCALLY KNOWN AS THE CHALK MOUNTAINS, AND ON LU2206'PROPERTY OWNED BY THE BARNWELL RANCH. LU2206' LU2206'TO REACH THE STATION FROM THE POST OFFICE IN BRIDGEVILLE, GO EAST LU2206'AND SOUTH ON STATE HIGHWAY 36 FOR 0.05 MILE TO A Y-FORK AND LU2206'SIGN BLOCKSBURG. TAKE THE RIGHT FORK, AS PER SIGN, AND GO LU2206'SOUTHERLY FOR 2.9 MILES TO A THREE-WAY Y-FORK. TAKE THE MIDDLE LU2206'FORK AND GO SOUTHWEST AND WEST FOR 0.5 MILE TO A Y-FORK. TAKE LU2206'THE RIGHT FORK, NORTHWEST, FOR 2.2 MILES TO THE BARNWELL RANCH. LU2206'PASS THROUGH THE GATE AT THE NORTHEAST CORNER OF THE RANCH LU2206'BUILDINGS AND GO NORTHWEST AND NORTH FOR 0.5 MILE TO A BOARD LU2206'GATE. PASS THROUGH THE GATE AND GO NORTHWEST FOR 0.05 MILE LU2206'TO A Y-FORK. TAKE THE LEFT FORK AND GO WESTERLY FOR 0.5 LU2206'MILE TO THE END OF TRUCK TRAVEL. PACK NORTHERLY FOR ABOUT LU2206'0.1 MILE TO THE HIGHEST POINT IN THE VICINITY AND THE STATION. LU2206' LU2206'THE STATION MARK, STAMPED CHALKY 1961, IS A STANDARD DISK SET LU2206'IN THE TOP OF A 10-INCH SQUARE, CONCRETE MONUMENT THAT PROJECTS LU2206'4 INCHES. IT IS 14 FEET WEST OF AN OAK TREE WITH A TRIANGULAR LU2206'BLAZE. (NOTES 1A AND 7A.) LU2206' LU2206'REFERENCE MARK NO. 1, STAMPED CHALKY NO 1 1961, IS A STANDARD LU2206'DISK SET IN THE TOP A 10-INCH SQUARE, CONCRETE MONUMENT THAT LU2206'PROJECTS 1 INCH. IT IS 14 FEET SOUTH OF THE OAK TREE WITH THE LU2206'TRIANGULAR BLAZE. (NOTE 11A) LU2206' LU2206'REFERENCE MARK NO. 2, STAMPED CHALKY NO 2 1961, IS A STANDARD LU2206'DISK CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT LU2206'PROJECTS 3 INCHES. IT IS 47 FEET SOUTHWEST OF THE OAK TREE WITH LU2206'THE TRIANGULAR BLAZE. (NOTE 12A) LU2206' LU2206'IT IS 42.91 FEET OR 13.078 METERS BETWEEN THE REFERENCE MARKS. LU2206' LU2206'NO SUITABLE LOCATION FOR AN AZIMUTH MARK.