National Geodetic Survey, Retrieval Date = SEPTEMBER 14, 2002 LT0591 *********************************************************************** LT0591 DESIGNATION - DOW LT0591 PID - LT0591 LT0591 STATE/COUNTY- CA/LASSEN LT0591 USGS QUAD - SPALDING TRACT (1995) LT0591 LT0591 *CURRENT SURVEY CONTROL LT0591 ___________________________________________________________________ LT0591* NAD 83(1992)- 40 44 26.11188(N) 120 49 37.57450(W) ADJUSTED LT0591* NAVD 88 - 2057.1 (meters) 6749. (feet) VERTCON LT0591 ___________________________________________________________________ LT0591 EPOCH DATE - 1991.35 LT0591 LAPLACE CORR- 1.01 (seconds) DEFLEC99 LT0591 GEOID HEIGHT- -22.67 (meters) GEOID99 LT0591 LT0591 HORZ ORDER - SECOND LT0591 LT0591.The horizontal coordinates were established by classical geodetic methods LT0591.and adjusted by the National Geodetic Survey in March 1994. LT0591.The horizontal coordinates are valid at the epoch date displayed above. LT0591.The epoch date for horizontal control is a decimal equivalence LT0591.of Year/Month/Day. LT0591 LT0591.The NAVD 88 height was computed by applying the VERTCON shift value to LT0591.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0591 LT0591.The Laplace correction was computed from DEFLEC99 derived deflections. LT0591 LT0591.The geoid height was determined by GEOID99. LT0591 LT0591; North East Units Scale Converg. LT0591;SPC CA 1 - 656,920.272 2,099,054.447 MT 0.99989599 +0 46 01.0 LT0591;SPC CA 1 - 2,155,245.93 6,886,647.80 sFT 0.99989599 +0 46 01.0 LT0591;UTM 10 - 4,512,231.397 683,465.090 MT 1.00001431 +1 25 06.6 LT0591 LT0591: Primary Azimuth Mark Grid Az LT0591:SPC CA 1 - LAVA PEAK 330 28 47.2 LT0591:UTM 10 - LAVA PEAK 329 49 41.6 LT0591 LT0591|---------------------------------------------------------------------| LT0591| PID Reference Object Distance Geod. Az | LT0591| dddmmss.s | LT0591| DB7202 DOW RM 1 5.673 METERS 03106 | LT0591| LT0590 DOW MOUNTAIN LOT 1948 3.249 METERS 06729 | LT0591| DB7203 DOW RM 2 4.984 METERS 10510 | LT0591| LT0608 LAVA PEAK APPROX.11.4 KM 3311448.2 | LT0591|---------------------------------------------------------------------| LT0591 LT0591 SUPERSEDED SURVEY CONTROL LT0591 LT0591 NAD 83(1986)- 40 44 26.11678(N) 120 49 37.58242(W) AD(1984.00) 2 LT0591 NAD 27 - 40 44 26.50000(N) 120 49 33.72100(W) AD( ) 2 LT0591 NGVD 29 - 2055.9 (m) 6745. (f) VERT ANG LT0591 LT0591.Superseded values are not recommended for survey control. LT0591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0591.See file dsdata.txt to determine how the superseded data were derived. LT0591 LT0591_MARKER: Z = SEE DESCRIPTION LT0591_SETTING: 0 = UNSPECIFIED SETTING LT0591 LT0591 HISTORY - Date Condition Report By LT0591 HISTORY - 1948 MONUMENTED CGS LT0591 HISTORY - 1968 SEE DESCRIPTION CADH LT0591 LT0591 STATION DESCRIPTION LT0591 LT0591'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) LT0591'THE STATION IS LOCATED ABOUT 37 MILES SOUTHEAST OF FALL RIVER LT0591'MILLS, 24 MILES NORTH NORTHWEST OF SUSANVILLE, 6 MILES NORTHWEST LT0591'OF EAGLE LAKE, ON A LOW TIMBERED BUTTE WITH HIGHER HILLS TO LT0591'THE NORTH. THE BUTTE IS CALLED DOW BUTTE AND HAS A U.S. LT0591'FOREST SERVICE LOOKOUT TOWER ON THE HIGHEST POINT. LT0591' LT0591'STATION MARK, STAMPED DOW 1948, IS A STANDARD DISK SET IN A LT0591'DRILL HOLE IN THE CONCRETE SIDEWALK LEADING TO THE LOOKOUT LT0591'TOWER. IT IS 4.51 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE LT0591'LOOKOUT TOWER AND FLUSH WITH THE SIDEWALK. LT0591' LT0591'REFERENCE MARK NUMBER 1, STAMPED DOW NO 1 1948, IS A STANDARD LT0591'DISK SET IN A DRILL HOLE IN THE TOP OF THE CONCRETE BASE AT LT0591'THE NORTHEAST CORNER OF THE LOOKOUT. IT IS 4 FEET HIGHER THAN LT0591'THE STATION AND THE SURROUNDING GROUND. LT0591' LT0591'REFERENCE MARK NUMBER 2, STAMPED DOW NO 2 1948, IS A STANDARD LT0591'DISK SET IN A DRILL HOLE IN THE TOP OF THE CONCRETE BASE AT LT0591'THE SOUTHWEST CORNER OF THE LOOKOUT. IT IS 4 FEET HIGHER THAN LT0591'THE STATION AND THE SURROUNDING GROUND. LT0591' LT0591'STATION LAVA PK (USDA) CAN BE USED FOR THE AZIMUTH MARK. LT0591'TO REACH SEE THE DESCRIPTION FOR LAVA PK (USDA). LT0591' LT0591'DOW MTN. LOOKOUT TOWER IS 14 FEET SQUARE, 40 FEET HIGH AND HAS A LT0591'SLOPING ROOF. IT IS A WOODEN ENCLOSED TOWER WITH A STORE LT0591'ROOM UNDER THE LOOKOUT HOUSE. THE DISTANCE AND DIRECTION LT0591'WAS MADE TO THE CENTER OF THE BASE OF THE TOWER. LT0591' LT0591'THE STATION IS REACHED AS FOLLOWS--FROM THE U.S. POST OFFICE LT0591'IN SUSANVILLE GO EAST ON STATE HIGHWAY 36 FOR 0.6 MILE. TURN LT0591'LEFT AS PER SIGN BIEBER AND GO NORTH WEST ON THE BIEBER LT0591'ROAD FOR 33.0 MILES TO A SIDE ROAD ON THE LEFT. TURN LEFT LT0591'AS PER SIGN SHEEPSHEAD 12 AND GO WEST FOR 4.9 MILES. TAKE LT0591'LEFT FORK AT THE EAST EDGE OF LAKE AND GO 0.3 MILE. TAKE LT0591'LEFT FORK AND CONTINUE FOR 0.6 MILE TO A CROSSROAD. TURN RIGHT LT0591'AND GO 1.2 MILES. TAKE RIGHT FORK AS PER SIGN DOW BUTTE LT0591'LOOKOUT AND GO UPHILL TO THE LOOKOUT TOWER AND STATION. LT0591 LT0591 STATION RECOVERY (1968) LT0591 LT0591'RECOVERY NOTE BY CA DIV OF HIGHWAYS 1968 LT0591'STATION WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION. LT0591'STATION WAS LOCATED USING THE ABOVE DESCRIPTION.