National Geodetic Survey, Retrieval Date = JANUARY 2, 2005 LU2202 *********************************************************************** LU2202 DESIGNATION - PRATT LU2202 PID - LU2202 LU2202 STATE/COUNTY- CA/HUMBOLDT LU2202 USGS QUAD - HARRIS (1969) LU2202 LU2202 *CURRENT SURVEY CONTROL LU2202 ___________________________________________________________________ LU2202* NAD 83(1992)- 40 07 11.95556(N) 123 41 34.32470(W) ADJUSTED LU2202* NAVD 88 - 1187.3 (meters) 3895. (feet) VERTCON LU2202 ___________________________________________________________________ LU2202 EPOCH DATE - 1991.35 LU2202 LAPLACE CORR- 6.14 (seconds) DEFLEC99 LU2202 GEOID HEIGHT- -29.95 (meters) GEOID03 LU2202 LU2202 HORZ ORDER - FIRST LU2202 LU2202.The horizontal coordinates were established by classical geodetic methods LU2202.and adjusted by the National Geodetic Survey in March 1994. LU2202.The horizontal coordinates are valid at the epoch date displayed above. LU2202.The epoch date for horizontal control is a decimal equivalence LU2202.of Year/Month/Day. LU2202 LU2202.The NAVD 88 height was computed by applying the VERTCON shift value to LU2202.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LU2202 LU2202.The Laplace correction was computed from DEFLEC99 derived deflections. LU2202 LU2202.The geoid height was determined by GEOID03. LU2202 LU2202; North East Units Scale Factor Converg. LU2202;SPC CA 1 - 588,743.316 1,855,705.843 MT 0.99997194 -1 06 25.0 LU2202;SPC CA 1 - 1,931,568.70 6,088,261.59 sFT 0.99997194 -1 06 25.0 LU2202;SPC CA 2 - 773,694.783 1,855,689.895 MT 1.00007809 -1 04 02.3 LU2202;SPC CA 2 - 2,538,363.63 6,088,209.26 sFT 1.00007809 -1 04 02.3 LU2202;UTM 10 - 4,441,304.852 440,960.399 MT 0.99964291 -0 26 47.4 LU2202 LU2202! - Elev Factor x Scale Factor = Combined Factor LU2202!SPC CA 1 - 0.99981848 x 0.99997194 = 0.99979042 LU2202!SPC CA 2 - 0.99981848 x 1.00007809 = 0.99989655 LU2202!UTM 10 - 0.99981848 x 0.99964291 = 0.99946145 LU2202 LU2202: Primary Azimuth Mark Grid Az LU2202:SPC CA 1 - PRATT AZ MK 344 44 29.4 LU2202:SPC CA 2 - PRATT AZ MK 344 42 06.7 LU2202:UTM 10 - PRATT AZ MK 344 04 51.8 LU2202 LU2202|---------------------------------------------------------------------| LU2202| PID Reference Object Distance Geod. Az | LU2202| dddmmss.s | LU2202| LU2182 KETTENPOM LOOKOUT TOWER APPROX.19.2 KM 0812614.5 | LU2202| DB6547 PRATT RM 3 19.921 METERS 13538 | LU2202| DB6548 PRATT RM 4 14.165 METERS 18623 | LU2202| DB6546 WEBER RM 2 8.989 METERS 23649 | LU2202| LU2201 WEBER 23.531 METERS 30314 | LU2202| DB6545 PRATT AZ MK 3433804.4 | LU2202|---------------------------------------------------------------------| LU2202 LU2202 SUPERSEDED SURVEY CONTROL LU2202 LU2202 NAD 83(1986)- 40 07 11.93692(N) 123 41 34.32031(W) AD(1984.00) 1 LU2202 NAD 27 - 40 07 12.41686(N) 123 41 30.21947(W) AD( ) 1 LU2202 NGVD 29 (07/19/86) 1186.3 (m) 3892. (f) VERT ANG LU2202 LU2202.Superseded values are not recommended for survey control. LU2202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LU2202.See file dsdata.txt to determine how the superseded data were derived. LU2202 LU2202_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK4096041305(NAD 83) LU2202_MARKER: DS = TRIANGULATION STATION DISK LU2202_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT LU2202 LU2202 HISTORY - Date Condition Report By LU2202 HISTORY - 1942 MONUMENTED CGS LU2202 HISTORY - 1961 GOOD CGS LU2202 HISTORY - 1964 GOOD CGS LU2202 HISTORY - 1969 GOOD USGS LU2202 LU2202 STATION DESCRIPTION LU2202 LU2202'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (JCS) LU2202'STATION IS LOCATED ON PRATT MOUNTAIN, A BALD DIVIDE LYING LU2202'BETWEEN THE N AND S FORKS OF THE EEL RIVER, ABOUT 6 MILES LU2202'ENE OF GARBERVILLE (AIR LINE) AND ONE MILE N OF THE LU2202'GARBERVILLE-HARRIS ROAD. IT IS ON THE SAME HIGH POINT AS THE LU2202'STATE FOREST LOOKOUT TOWER. LU2202' LU2202'THE STATION IS MARKED BY A BRONZE DISK, STAMPED PRATT 1942, LU2202'SET IN TOP OF A 10-INCH SQUARE CONCRETE POST, PROJECTING LU2202'6 INCHES ABOVE THE GROUND. IT IS 40.4 FEET N OF THE N SIDE LU2202'OF THE LOOKOUTS DWELLING HOUSE, AND 77.202 FEET SSE OF THE LU2202'CENTER OF THE LOOKOUT TOWER. LU2202' LU2202'UNDERGROUND MARK IS A BRONZE DISK SET IN CONCRETE. LU2202' LU2202'REFERENCE MARK NO. 1 IS THE U.S.G.S. BENCH MARK AND TRIANGULATION LU2202'STATION WEBER. IT IS A BRONZE U.S.G.S. BENCH MARK AND LU2202'TRIANGULATION STATION DISK, STAMPED WEBER 1932, SET IN BEDROCK, LU2202'FLUSH WITH THE GROUND. IT IS AT THE INTERSECTION OF DIAGONALS LU2202'BETWEEN THE FOOTINGS OF THE TOWER LEGS. THUS APPARENTLY LU2202'UNDER THE CENTER OF THE LOOKOUT. LU2202' LU2202'REFERENCE MARK NO. 2 IS A BRONZE U.S.G.S. DISK, STAMPED NO. 2, LU2202'SET IN AN IRREGULAR MASS OF CONCRETE, IN A DEPRESSION IN LU2202'BEDROCK, FLUSH WITH THE GROUND. THE ARROW POINTS TO U.S.G.S. LU2202'STATION WEBER. IT IS SW OF THE STATION. LU2202' LU2202'THE AZIMUTH MARK IS N OF THE STATION, ON TOP OF A BALD HILL LU2202'WHEREON NUMEROUS BOULDERS AND ROCK OUTCROPS ARE VISIBLE. LU2202'TO REACH FROM THE FORK MENTIONED BELOW, GO N 3.6 MILES, LU2202'LEAVE TRUCK AND WALK TO TOP OF HILL ON RIGHT (E) OF ROAD. LU2202'MARK IS IN A ROCK OUTCROP ABOUT 100 FEET E OF THE HIGHEST LU2202'POINT OF THE HILL, ABOUT 20 FEET W OF A CONSPICUOUS ROCK LU2202'LEDGE. MARKED BY A BRONZE DISK, STAMPED PRATT 1942, SET LU2202'IN TOP OF OUTCROPPING BEDROCK, 1 FOOT ABOVE THE GROUND. LU2202' LU2202'TO REACH FROM GARBERVILLE, GO N ON U.S. HIGHWAY 101 FOR 0.4 LU2202'MILE. TURN RIGHT JUST AFTER CROSSING BEAR GULCH BRIDGE, AND LU2202'GO E ON THE HARRIS ROAD (GRADED) UP THE STEEP AND WINDING LU2202'GRADE 6.8 MILES. TAKE RIGHT FORK (LEFT FORK LEADS TO AZIMUTH-SEE LU2202'ABOVE) AND CONTINUE UPGRADE 1.1 MILES TO TOP OF DIVIDE LU2202'AND A ROAD LEFT AT SIGN PRATT MTN. L.O. TURN LEFT 1.9 MILES LU2202'TO TOP OF MOUNTAIN, LOOKOUT, AND STATION. LU2202 LU2202 STATION RECOVERY (1961) LU2202 LU2202'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (JCC) LU2202'STATION WAS VISITED BY A BUILDING PARTY ONLY. R.M. 1 LU2202'AND 2 WOULD NOT SEE SO THE BUILDING PARTY PUT IN R.M. 3 AND 4. LU2202' LU2202'STATION WAS RECOVERED AS DESCRIBED IN 1942 AND ALL MARKS ARE LU2202'IN GOOD CONDITION. A 14 FOOT STAND WAS BUILT AT THIS TIME LU2202'TO SEE OVER THE GARAGE. LU2202' LU2202'R.M. 3 IS A STANDARD DISK SET IN ROCK 60 FEET SOUTHEAST LU2202'OF THE STATION. IT IS STAMPED PRATT NO 3 1942. LU2202' LU2202'R.M. 4 IS A STANDARD DISK SET IN A CONCRETE STEP 50 LU2202'FEET SOUTHWEST OF THE STATION. IT IS STAMPED PRATT NO 4 1942. LU2202 LU2202 STATION RECOVERY (1964) LU2202 LU2202'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (JJL) LU2202'ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION. DUE LU2202'TO RECENT CONSTRUCTION A 15 FOOT SIGNAL IS REQUIRED TO SEE LU2202'REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2 IS NOT VISIBLE LU2202'FROM THE STATION. THE MEASUREMENT TO REFERENCE MARK NO. 1 LU2202'WAS OBTAINED BY OFF-SETTING 90 DEGREES AT THE STATION AND AT LU2202'THE REFERENCE MARK. REFERENCE MARKS NO. 3 AND NO. 4 WERE LU2202'ESTABLISHED. A COMPLETE DESCRIPTION FOLLOWS-- LU2202' LU2202'THE STATION IS LOCATED ABOUT 13-1/2 MILES WEST-SOUTHWEST OF LU2202'ZENIA, 6 MILES EAST-NORTHEAST OF GARBERVILLE, NEAR THE HIGHEST LU2202'POINT OF WHAT IS LOCALLY KNOWN AS PRATT MOUNTAIN, AND ON LU2202'THE SAME POINT AS THE PRATT MOUNTAIN LOOKOUT TOWER. LU2202' LU2202'TO REACH THE STATION FROM THE POST OFFICE IN GARBERVILLE, GO EAST LU2202'FOR 0.05 MILE TO U.S. HIGHWAY 101. TURN LEFT AND GO NORTH ON LU2202'U.S. HIGHWAY 101 FOR 0.55 MILE TO A Y-FORK. TAKE THE RIGHT FORK LU2202'AND GO EASTERLY ON THE SURFACED AND GRAVELED ROAD FOR 6.55 MILES LU2202'TO A T-ROAD TO THE LEFT. (TO REACH THE AZIMUTH MARK FROM THIS LU2202'POINT, TURN LEFT AND GO NORTHERLY FOR 3.45 MILES TO A BARE, LU2202'PROMINENT HILL ON THE RIGHT, EAST, SIDE OF THE ROAD. LU2202'PACK EAST FOR ABOUT 0.15 MILE TO THE TOP OF THE HILL AND LU2202'THE MARK.) CONTINUE EAST AND SOUTHEAST FOR 1.0 MILE TO A LU2202'REVERSE Y-FORK. TURN SHARP LEFT AND GO NORTHERLY FOR LU2202'0.25 MILE TO A LOCKED GATE. (A STATE FOREST SERVICE KEY IS LU2202'REQUIRED TO PASS THROUGH THE GATE.) PASS THROUGH THE GATE AND LU2202'CONTINUE NORTH FOR 1.7 MILES TO THE TOP OF THE MOUNTAIN LU2202'AND THE STATION. LU2202' LU2202'THE STATION MARK, STAMPED PRATT 1942, IS A STANDARD DISK LU2202'SET IN THE TOP OF A 10-INCH SQUARE, CONCRETE MONUMENT THAT LU2202'PROJECTS 2 INCHES. IT IS 43 FEET NORTH OF THE NORTHEAST CORNER LU2202'OF THE LOOKOUTS LIVING QUARTERS AND 12 FEET NORTHWEST OF THE LU2202'SOUTHWEST CORNER OF THE GARAGE. LU2202' LU2202'REFERENCE MARK NO. 1, STAMPED WEBER 1932, IS A U.S. GEOLOGICAL LU2202'SURVEY BENCH MARK DISK CEMENTED IN A DRILL HOLE IN A BOULDER LU2202'THAT IS FLUSH WITH THE GROUND. IT IS BENEATH AND IN THE LU2202'APPROXIMATE CENTER OF THE PRATT MOUNTAIN LOOKOUT TOWER. LU2202' LU2202'REFERENCE MARK NO. 2, STAMPED NO 2, IS A U.S. GEOLOGICAL LU2202'SURVEY DISK CEMENTED IN A DRILL HOLE IN A BOULDER THAT IS LU2202'FLUSH WITH THE GROUND. IT IS 31 FEET NORTHWEST OF THE NORTHEAST LU2202'CORNER OF THE LOOKOUTS LIVING QUARTERS AND 20 FEET NORTH OF LU2202'THE NORTHWEST CORNER OF THE LIVING QUARTERS. LU2202' LU2202'REFERENCE MARK NO. 3, STAMPED PRATT NO 3 1942, IS A STANDARD LU2202'DISK CEMENTED IN A DRILL HOLE IN A BOULDER THAT IS FLUSH WITH THE LU2202'GROUND. IT IS 54 FEET SOUTHEAST OF THE SOUTHWEST CORNER LU2202'OF THE GARAGE AND 53 FEET EAST OF THE NORTHEAST CORNER OF LU2202'THE LOOKOUTS LIVING QUARTERS. LU2202' LU2202'REFERENCE MARK NO. 4, STAMPED PRATT NO 4 1942, IS A STANDARD LU2202'DISK CEMENTED IN A DRILL HOLE IN THE CONCRETE STEPS OF THE LU2202'LOOKOUTS LIVING QUARTERS. IT IS 4-1/2 FEET SOUTHEAST OF THE LU2202'NORTHEAST CORNER OF THE LIVING QUARTERS. LU2202' LU2202'IT IS 50.91 FEET OR 15.515 METERS BETWEEN REFERENCE MARK NO. 3 LU2202'AND REFERENCE MARK NO. 4. LU2202' LU2202'THE AZIMUTH MARK, STAMPED PRATT 1942, IS A STANDARD DISK LU2202'CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT PROJECTS LU2202'1 FOOT. IT IS ABOUT 100 FEET EAST OF THE HIGHEST POINT OF A LU2202'PROMINENT, BARE HILL AND 20 FEET WEST OF A LOW, ROCKY RIDGE. LU2202 LU2202 STATION RECOVERY (1969) LU2202 LU2202'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1969 LU2202'THE MARK WAS NOT FOUND, BUT WHERE IT SHOULD HAVE BEEN, A ROAD LU2202'HAD BEEN BUILT. THE MARK MUST HAVE BEEN DESTROYED AT THAT LU2202'TIME. ALL OTHER MARKS REFERING TO STATION PRATT WERE FOUND.