National Geodetic Survey, Retrieval Date = SEPTEMBER 14, 2002 LT0759 *********************************************************************** LT0759 DESIGNATION - LATOUR LT0759 PID - LT0759 LT0759 STATE/COUNTY- CA/SHASTA LT0759 USGS QUAD - VIOLA (1995) LT0759 LT0759 *CURRENT SURVEY CONTROL LT0759 ___________________________________________________________________ LT0759* NAD 83(1992)- 40 36 27.97229(N) 121 42 32.35475(W) ADJUSTED LT0759* NAVD 88 - 2055.3 (meters) 6743. (feet) VERTCON LT0759 ___________________________________________________________________ LT0759 EPOCH DATE - 1991.35 LT0759 LAPLACE CORR- 14.00 (seconds) DEFLEC99 LT0759 GEOID HEIGHT- -24.48 (meters) GEOID99 LT0759 LT0759 HORZ ORDER - SECOND LT0759 LT0759.The horizontal coordinates were established by classical geodetic methods LT0759.and adjusted by the National Geodetic Survey in March 1994. LT0759.The horizontal coordinates are valid at the epoch date displayed above. LT0759.The epoch date for horizontal control is a decimal equivalence LT0759.of Year/Month/Day. LT0759 LT0759.The NAVD 88 height was computed by applying the VERTCON shift value to LT0759.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0759 LT0759.The Laplace correction was computed from DEFLEC99 derived deflections. LT0759 LT0759.The geoid height was determined by GEOID99. LT0759 LT0759; North East Units Scale Converg. LT0759;SPC CA 1 - 641,550.736 2,024,626.518 MT 0.99990247 +0 11 25.0 LT0759;SPC CA 1 - 2,104,821.04 6,642,462.17 sFT 0.99990247 +0 11 25.0 LT0759;UTM 10 - 4,496,018.270 609,218.657 MT 0.99974683 +0 50 25.3 LT0759 LT0759: Primary Azimuth Mark Grid Az LT0759:SPC CA 1 - LATOUR RM 4 AZIMUTH 290 37 53.3 LT0759:UTM 10 - LATOUR RM 4 AZIMUTH 289 58 53.0 LT0759 LT0759|---------------------------------------------------------------------| LT0759| PID Reference Object Distance Geod. Az | LT0759| dddmmss.s | LT0759| DB8073 LATOUR RM 1 29.377 METERS 14724 | LT0759| LT0758 LATOUR LOOKOUT HOUSE 1948 31.630 METERS 14854 | LT0759| DB8074 LATOUR RM 1 15430 | LT0759| DB8075 LATOUR RM 2 5.215 METERS 23112 | LT0759| DB8076 LATOUR RM 3 5.268 METERS 23115 | LT0759| DB8072 LATOUR AZ MK 2412221.4 | LT0759| DB8077 LATOUR RM 4 AZIMUTH 2904918.3 | LT0759|---------------------------------------------------------------------| LT0759 LT0759 SUPERSEDED SURVEY CONTROL LT0759 LT0759 NAD 83(1986)- 40 36 27.97630(N) 121 42 32.35525(W) AD(1984.00) 2 LT0759 NAD 27 - 40 36 28.41200(N) 121 42 28.39800(W) AD( ) 2 LT0759 NGVD 29 - 2054.3 (m) 6740. (f) VERT ANG LT0759 LT0759.Superseded values are not recommended for survey control. LT0759.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0759.See file dsdata.txt to determine how the superseded data were derived. LT0759 LT0759_MARKER: Z = SEE DESCRIPTION LT0759_SETTING: 0 = UNSPECIFIED SETTING LT0759 LT0759 HISTORY - Date Condition Report By LT0759 HISTORY - 1948 MONUMENTED CGS LT0759 HISTORY - 1973 SEE DESCRIPTION NGS LT0759 HISTORY - 1974 SEE DESCRIPTION NGS LT0759 LT0759 STATION DESCRIPTION LT0759 LT0759'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) LT0759'STATION IS LOCATED ABOUT 12 MILES NORTHEAST OF SHINGLETOWN, LT0759'ABOUT 6 MILES NORTH OF VIOLA ON THE HIGHEST PART OF LATOUR BUTTE, LT0759'A HIGH PROMINENT PEAK THAT HAS A HEAVY GROWTH OF BRUSH ON ITS LT0759'SIDES AND A BARE ROCKY TOP. LT0759' LT0759'STATION IS REACHED AS FOLLOWS--FROM VIOLA GO WEST, ON STATE LT0759'HIGHWAY 44, FOR 6.5 MILES TO SIDE ROAD ON THE RIGHT (N) AT LT0759'SIGN LATOUR BUTTE 12. TURN RIGHT (N), AS PER SIGN LATOUR BUTTE LT0759'12 AND GO 0.7 MILE TO FORK. TAKE RIGHT FORK AT SIGN RITS S MILL LT0759'AND GO 0.5 MILE TO CROSSROAD AND SIGN RITTS MILL 2. CONTINUE LT0759'STRAIGHT AHEAD AND GO 2.2 MILES TO SIGN LATOUR LOOKOUT 8. LT0759'CONTINUE STRAIGHT AHEAD (N) AND GO 3.0 MILES TO A T ROAD. LT0759'TAKE RIGHT FORK, AS PER SIGN LATOUR LOOKOUT 5, AND GO 2.3 LT0759'MILES TO THE AZIMUTH MARK ON THE LEFT (E) SIDE OF ROAD NEAR LT0759'TREE WITH TRIANGULAR BLAZE. CONTINUE 0.5 MILE TO FORK AT LT0759'SIGN LATOUR L O SPIKE CAMP. TAKE LEFT FORK AND GO 2.1 MILES LT0759'TO STATION ON THE HIGHEST PART OF MOUNTAIN. LT0759' LT0759'STATION, STAMPED LATOUR 1948 IS A STANDARD USC AND GS BRONZE LT0759'TRIANGULATION DISK THAT IS SET IN THE TOP OF 1 FOOT SQUARE LT0759'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND. IT IS ABOUT LT0759'30 FT. SOUTH OF THE NORTH END OF THE MOUNTAIN AND 5 FT. WEST LT0759'OF TELEPHONE POLE. LT0759' LT0759'AZIMUTH MARK, STAMPED LATOUR 1948 IS A STANDARD USC AND GS LT0759'BRONZE DISK CEMENTED IN DRILL HOLE IN BEDROCK THAT IS FLUSH LT0759'WITH THE GROUND. IT IS ON THE EAST BANK OF ROAD, 2.6 METERS LT0759'EAST OF THE CENTERLINE OF ROAD, 5 METERS SOUTHWEST OF TREE WITH LT0759'TRIANGULAR BLAZE, AND ABOUT 5 FEET HIGHER THAN THE ROAD. LT0759' LT0759'R.M. 1, STAMPED LATOUR NO 1 1948 IS A STANDARD USC AND GS LT0759'REFERENCE DISK CEMENTED IN A DRILL HOLE IN THE CONCRETE FLOOR OF LT0759'LOOKOUT HOUSE. IT IS ABOUT THE SAME ELEVATION AS THE STATION. LT0759' LT0759'R.M. 2, STAMPED LATOUR NO 2 1948 IS A STANDARD USC AND GS BRONZE LT0759'DISK THAT IS BRAZED TO THE TOP OF A 2 INCH IRON PIPE THAT LT0759'PROJECTS ABOUT 2 INCHES ABOVE THE GROUND. IT IS ON THE EAST LT0759'EDGE OF MOUNTAIN AND ABOUT THE SAME ELEVATION AS THE STATION. LT0759' LT0759'LATOUR LOOKOUT HOUSE IS A WOODEN BUILDING, PAINTED WHITE, LT0759'THAT IS 12 FT. SQUARE AND ABOUT 20 FT. IN HEIGHT. THE APEX LT0759'OF THE ROOF WAS INTERSECTED. LT0759 LT0759 STATION RECOVERY (1973) LT0759 LT0759'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN) LT0759'THE STATION MARK, REFERENCE MARK 1, AND LATOUR LOOKOUT HOUSE LT0759'1948 WERE RECOVERED IN GOOD CONDITION. THE PIPE ON WHICH THE LT0759'REFERENCE MARK 2 DISK WAS BRAZED WAS FOUND SOLID IN THE GROUND LT0759'BUT WAS BENT OVER AND THE DISK WAS MISSING. REFERENCE MARK LT0759'3 WAS ESTABLISHED ON THE PIPE ON THIS DATE. THE AZIMUTH LT0759'MARK WAS FOUND TO HAVE BEEN GRADED OUT OF THE GROUND SO A NEW LT0759'AZIMUTH MARK WAS ESTABLISHED ON THIS DATE. THE DISTANCES LT0759'AND DIRECTIONS TO REFERENCE MARK 1 AND LATOUR LOOKOUT HOUSE LT0759'1948 MEASURED ON THIS DATE AGREED WITH THE 1948 MEASUREMENTS. LT0759'THE 1948 DESCRIPTION IS ADEQUATE WITH THE FOLLOWING LT0759'ADDITIONS-- LT0759' LT0759'REFERENCE MARK 3 IS A CROSS CUT IN TOP OF A 1-INCH STEEL PIPE LT0759'BENT OVER AT A RIGHT ANGLE AND PARALLEL WITH THE GROUND. IT LT0759'IS STAMPED R.M. 3, IS AT THE SOUTHWEST EDGE OF A LEVELED AREA LT0759'AND IS ABOUT 1 FOOT LOWER THAN THE STATION MARK. LT0759' LT0759'THE AZIMUTH MARK SET ON THIS DATE IS A NGS REFERENCE MARK DISK LT0759'STAMPED LATOUR 1948 NO 4 1973 CEMENTED IN A DRILL HOLE IN THE LT0759'TOP OF A 2X3-FOOT BOULDER PROJECTING 1/2 FOOT ABOVE THE GROUND LT0759'AND IS 23 FEET NORTH OF THE CENTER LINE OF THE ROAD LEADING TO LT0759'THE LATOUR LOOKOUT, 3.6 FEET EAST OF A METAL WITNESS POST, AND LT0759'ABOUT 5 FEET HIGHER THAN THE ROAD. LT0759' LT0759'TO REACH THE AZIMUTH MARK FROM THE STATION SITE GO SOUTHEAST, LT0759'WEST, AND NORTHWEST ON THE LATOUT LOOKOUT ROAD 1.1 MILES TO THE LT0759'MARK ON THE RIGHT (NORTH). LT0759 LT0759 STATION RECOVERY (1974) LT0759 LT0759'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (PRL) LT0759'STATION MARK, REFERENCE MARK 1, REFERENCE MARK 3, AND REFERENCE LT0759'MARK 4-AZIMUTH MARK WERE ALL RECOVERED AS DESCRIBED. LT0759' LT0759'R.M. NO. 1 IS A STANDARD USGS DISK STAMPED R.M. 1 SET IN A DRILL LT0759'HOLE IN A 2-BY-3-FOOT ROCK PROJECTING 2 FEET ABOVE GROUND.