National Geodetic Survey, Retrieval Date = OCTOBER 26, 2004 JS3939 *********************************************************************** JS3939 DESIGNATION - LEEK JS3939 PID - JS3939 JS3939 STATE/COUNTY- CA/EL DORADO JS3939 USGS QUAD - LEEK SPRING HILL (1973) JS3939 JS3939 *CURRENT SURVEY CONTROL JS3939 ___________________________________________________________________ JS3939* NAD 83(1992)- 38 37 45.59039(N) 120 16 38.37058(W) ADJUSTED JS3939* NAVD 88 - 2323.93 (+/-2cm) 7624.4 (feet) VERTCON JS3939 ___________________________________________________________________ JS3939 EPOCH DATE - 1991.35 JS3939 LAPLACE CORR- 12.21 (seconds) DEFLEC99 JS3939 GEOID HEIGHT- -24.57 (meters) GEOID03 JS3939 JS3939 HORZ ORDER - FIRST JS3939 VERT ORDER - THIRD ? (See Below) JS3939 JS3939.The horizontal coordinates were established by classical geodetic methods JS3939.and adjusted by the National Geodetic Survey in March 1994. JS3939.The horizontal coordinates are valid at the epoch date displayed above. JS3939.The epoch date for horizontal control is a decimal equivalence JS3939.of Year/Month/Day. JS3939 JS3939.The NAVD 88 height was computed by applying the VERTCON shift value to JS3939.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) JS3939.The vertical order pertains to the NGVD 29 superseded value. JS3939 JS3939.The Laplace correction was computed from DEFLEC99 derived deflections. JS3939 JS3939.The geoid height was determined by GEOID03. JS3939 JS3939; North East Units Scale Factor Converg. JS3939;SPC CA 2 - 608,282.908 2,149,987.526 MT 0.99994606 +1 05 09.9 JS3939;SPC CA 2 - 1,995,674.84 7,053,750.74 sFT 0.99994606 +1 05 09.9 JS3939;SPC CA 3 - 736,351.852 2,019,390.645 MT 1.00004665 +0 08 10.8 JS3939;SPC CA 3 - 2,415,847.70 6,625,284.14 sFT 1.00004665 +0 08 10.8 JS3939;UTM 10 - 4,279,161.257 737,006.201 MT 1.00029179 +1 42 01.8 JS3939 JS3939! - Elev Factor x Scale Factor = Combined Factor JS3939!SPC CA 2 - 0.99963935 x 0.99994606 = 0.99958543 JS3939!SPC CA 3 - 0.99963935 x 1.00004665 = 0.99968599 JS3939!UTM 10 - 0.99963935 x 1.00029179 = 0.99993104 JS3939 JS3939: Primary Azimuth Mark Grid Az JS3939:SPC CA 2 - LEEK AZ MK 339 09 40.6 JS3939:SPC CA 3 - LEEK AZ MK 340 06 39.7 JS3939:UTM 10 - LEEK AZ MK 338 32 48.7 JS3939 JS3939|---------------------------------------------------------------------| JS3939| PID Reference Object Distance Geod. Az | JS3939| dddmmss.s | JS3939| DB2013 LEEK RM 3 AZIMUTH 0230800.4 | JS3939| DB2011 LEEK RM 1 13.190 METERS 04423 | JS3939| JS4650 LEEK LOH 18.985 METERS 22931 | JS3939| JS3943 LEEK SPRINGS LOT 36.521 METERS 25407 | JS3939| DB2012 LEEK RM 2 48.316 METERS 28640 | JS3939| JS3940 LEEK ECC 1.726 METERS 30302 | JS3939| DB2010 LEEK AZ MK 3401450.5 | JS3939|---------------------------------------------------------------------| JS3939 JS3939 SUPERSEDED SURVEY CONTROL JS3939 JS3939 NAD 83(1986)- 38 37 45.56231(N) 120 16 38.35922(W) AD(1984.00) 1 JS3939 NAD 27 - 38 37 45.89600(N) 120 16 34.66600(W) AD( ) 1 JS3939 NGVD 29 (07/19/86) 2322.79 (m) 7620.7 (f) LEVELING 3 JS3939 JS3939.Superseded values are not recommended for survey control. JS3939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JS3939.See file dsdata.txt to determine how the superseded data were derived. JS3939 JS3939_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SGH3700679161(NAD 83) JS3939_MARKER: DS = TRIANGULATION STATION DISK JS3939_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT JS3939_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO JS3939+STABILITY: SURFACE MOTION JS3939 JS3939 HISTORY - Date Condition Report By JS3939 HISTORY - 1940 MONUMENTED CGS JS3939 HISTORY - 1949 GOOD USGS JS3939 HISTORY - 1956 GOOD USGS JS3939 HISTORY - 1957 SEE DESCRIPTION USE JS3939 HISTORY - 1972 SEE DESCRIPTION NGS JS3939 HISTORY - 1973 SEE DESCRIPTION NGS JS3939 HISTORY - 1974 GOOD USGS JS3939 JS3939 STATION DESCRIPTION JS3939 JS3939'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (JCS) JS3939'STATION IS LOCATED IN THE ELDORADO NATIONAL FOREST, ON THE JS3939'SUMMIT OF LEEK SPRING PEAK. STATION IS ABOUT 10 MILES SOUTH JS3939'OF KYBURA, 8-1/2 MILES WEST OF PLASSE. THERE IS A U.S. FOREST JS3939'SERVICE LOOKOUT TOWER NEAR STATION. JS3939' JS3939'REACHED FROM PACIFIC POST OFFICE, A SMALL SETTLEMENT 19 MILES JS3939'EAST OF PLACERVILLE ON U.S. HIGHWAY 50, BY CONTINUING ON JS3939'U.S. HIGHWAY 50 FOR 0.15 MILE TO DIRT ROAD LEADING RIGHT, JS3939'SOUTHEAST UP STEEP GRADE AND SIGN, PLUM CREEK MILL. TAKE JS3939'DIRT ROAD FOR 0.9 MILE TO FORKS. TAKE RIGHT FORK FOR 0.1 MILE JS3939'TO FORKS AND SIGN, HAZEL VALLEY 4.5 DITCH CAMP 1. TAKE RIGHT JS3939'FORK, SOUTH FOR 0.3 MILE TO FORKS. CONTINUE RIGHT (SOUTH) JS3939'ON MAIN TRAVELED ROAD FOR 0.8 MILE TO FORKS AND SIGN GERARDS JS3939'SAWMILL 4, IRON MOUNTAIN 13. TAKE SHARP LEFT FORK, EAST, JS3939'AND GO 3.8 MILES TO FORKS AND SIGN, IRON MOUNTAIN ROAD, IRON JS3939'MOUNTAIN LOOKOUT 9. TAKE EXTREME LEFT FORK (SOUTH) FOR 0.8 JS3939'MILE TO FORKS AND SIGN, SILVER LAKE ROAD. TAKE LEFT FORK JS3939'(SOUTHEAST) FOR 2.9 MILES TO FORKS AND SIGN, IRON JS3939'MOUNTAIN AND SILVER LAKE ROAD. TAKE LEFT FORK, EAST FOR JS3939'1.8 MILES TO SIGN ON RIGHT READING STUMP SPRING - JS3939'ELEVATION 5500 FEET. CONTINUE STRAIGHT AHEAD, EAST, FOR 0.5 JS3939'MILE TO FORKS AND SIGN, BONNETTI TRAIL CAMP CREEK JS3939'2-1/2. TAKE LEFT FORK (EAST) FOR 1.2 MILES TO FORKS AND JS3939'SIGN IRON MT. L.O. 2. TAKE LEFT FORK, EAST FOR 1.0 MILE JS3939'TO FORKS AND SIGN, IRON MT. L.O. SILVER LAKE ROAD. JS3939'TAKE RIGHT FORK, SOUTH, AND FOLLOW SILVER LAKE ROAD SIGNS JS3939'FOR 3.2 MILES. AZIMUTH MARK IS HERE, 15 FEET SOUTHEAST JS3939'OF CENTER OF DIRT ROAD, SET IN OUTCROPPING BEDROCK FLUSH JS3939'WITH THE GROUND. MARK STAMPED LEEK 1940. CONTINUE JS3939'STRAIGHT AHEAD FOR 2.9 MILES TO FORKS AND SIGN, SILVER LAKE JS3939'ROAD, TAKE RIGHT FORK, SOUTH, FOR 2.0 MILES TO FORKS AND JS3939'SIGN LEEK SPRING L.O. 3. TURN RIGHT, SOUTHWEST AND FOLLOW JS3939'SIGNS TO LEEK SPRING LOOKOUT AND STATION. JS3939' JS3939'STATION IS MARKED BY A STANDARD DISK SET IN A SQUARE BLOCK JS3939'OF CONCRETE 170 FEET EAST-NORTHEAST OF THE CENTER OF LEEK JS3939'SPRING LOOKOUT TOWER. MARK STAMPED LEEK 1940. JS3939' JS3939'REFERENCE MARK NO. 1 IS A STANDARD DISK SET IN BEDROCK, JS3939'NORTHEAST OF STATION, ABOUT 4 FEET LOWER THAN STATION MARK, JS3939'FLUSH WITH THE GROUND. STAMPED LEEK NO. 1, 1940. JS3939' JS3939'REFERENCE MARK NO. 2, IS A STANDARD DISK SET IN BEDROCK, JS3939'WEST-NORTHWEST OF STATION, ABOUT 5 FEET LOWER THAN STATION JS3939'MARK. STAMPED LEEK NO. 2, 1940. JS3939' JS3939'AZIMUTH MARK IS A STANDARD DISK SET IN BEDROCK APPROXIMATELY JS3939'5 MILES AIRLINE, NORTH-NORTHWEST OF STATION. LOCATION OF JS3939'AZIMUTH MARK DESCRIBED IN THE BODY OF THE DESCRIPTION. JS3939' JS3939'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE SET AS JS3939'DESCRIBED IN NOTES 1A, 7A, AND 12A. JS3939 JS3939 STATION RECOVERY (1949) JS3939 JS3939'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1949 JS3939'RECOVERED AS DESCRIBED. JS3939'ALL MARKS IN GOOD CONDITION. RMS NOT OBSERVED. JS3939' JS3939'LOH AND LOT--NOT DESCRIBED. JS3939 JS3939 STATION RECOVERY (1956) JS3939 JS3939'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956 JS3939'NO TEXT AVAILABLE. JS3939 JS3939 STATION RECOVERY (1957) JS3939 JS3939'RECOVERY NOTE BY US ENGINEERS 1957 JS3939'STATION RECOVERED AS DESCRIBED, MARK IS 6 INCHES ABOVE GROUND JS3939'LEVEL. REFERENCE MARKS RECOVERED IN GOOD CONDITION. JS3939 JS3939 STATION RECOVERY (1972) JS3939 JS3939'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RMB) JS3939'THE STATION MARK, REFERENCE MARK 1 AND REFERENCE MARK 2 JS3939'WERE FOUND AS DESCRIBED AND IN GOOD CONDITION. THE OLD JS3939'LOOKOUT TOWER HAS BEEN REMOVED AND A NEW ONE HAS BEEN BUILT. JS3939'THE ORIGINAL AZIMUTH MARK WAS NOT FOUND SO A NEW ONE WAS JS3939'SET. A COMPLETE NEW DESCRIPTION FOLLOWS-- JS3939' JS3939'THE STATION IS LOCATED IN THE EL DORADO NATIONAL FOREST, JS3939'ON THE SUMMIT OF KEEK SPRING PEAK ADJACENT TO THE LEEK SPRINGS JS3939'FIRE LOOKOUT TOWER. IT IS ABOUT 9 MILES SOUTHWEST OF SILVER JS3939'LAKE SPILLWAY ON STATE ROUTE 88. IT LIES IN THE SOUTHEAST JS3939'QUARTER OF SECTION 14, T9N, R15E, MOUNT DIABLO MERIDIAN. JS3939' JS3939'TO REACH THE STATION FROM SILVER LAKE SPILLWAY ON STATE JS3939'ROUTE 88 IN AMADOR COUNTY, GO 7.1 MILES SOUTHWEST ON STATE JS3939'ROUTE 88 AND TURN RIGHT ON IRON MOUNTAIN ROAD. GO 1.6 MILES JS3939'WESTERLY ON IRON MOUNTAIN ROAD AND TURN LEFT ON AN EARTH JS3939'ROAD AT A SIGN LEEK SPRINGS L.O. 3. GO 1.45 MILES SOUTHWESTERLY JS3939'ON THE EARTH ROAD TO A ROAD FORKS. TAKE RIGHT FORK AND GO 1.15 JS3939'MILES WESTERLY TO A ROAD FORKS. TAKE RIGHT FORK AND GO 1.0 JS3939'MILE TO THE TOP OF THE HILL AND THE STATION. JS3939' JS3939'TO REACH THE AZIMUTH MARK FROM THE SIGN LEEK SPRINGS L.O. 3 JS3939'MENTIONED IN THE STATION TO REACH, CONTINUE 1.0 MILE WESTERLY JS3939'ON IRON MOUNTAIN ROAD AND TURN LEFT ON AN EARTH ROAD. GO JS3939'1.4 MILES WESTERLY TO A ROAD FORKS. TAKE THE LEFT FORK AND JS3939'GO 0.15 MILE WESTERLY TO THE TOP OF THE GRADE AND THE AZIMUTH JS3939'MARK ON THE LEFT. JS3939' JS3939'THE STATION MARK IS A STANDARD DISK, STAMPED LEEK 1940, SET JS3939'IN A SQUARE BLOCK OF CONCRETE AND IS LOCATED 119.82 FEET JS3939'EAST-NORTHEAST OF THE CENTER OF THE LOOKOUT TOWER. JS3939' JS3939'REFERENCE MARK 1 IS A STANDARD REFERENCE MARK DISK, STAMPED JS3939'LEEK NO 1 1940, SET IN BEDROCK AND IS 4 FEET LOWER THAN THE JS3939'STATION. JS3939' JS3939'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED LEEK NO 2 1940, JS3939'SET IN BEDROCK AND IS 5 FEET LOWER THAN THE STATION. JS3939' JS3939'THE AZIMUTH MARK IS STANDARD REFERENCE MARK METAL DISK, STAMPED JS3939'LEEK 1940 NO 3 1972, CEMENTED IN A DRILL HOLE IN A BOULDER JS3939'THAT PROJECTS 0.8 FOOT ABOVE GROUND AND IS LOCATED NEAR THE JS3939'SUMMIT OF A TREE SCATTERED ROCKY KNOLL, 75 YARDS SOUTH OF JS3939'THE ROAD, 90 FEET SOUTHWEST OF A FENCE, 4 FEET SOUTH OF AND ABOUT JS3939'5 FEET LOWER THAN A LARGE BOULDER THAT IS THE HIGHEST POINT JS3939'ON THE KNOLL. JS3939' JS3939'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--10 MILES SOUTH JS3939'OF KYBURZ JS3939 JS3939 STATION RECOVERY (1973) JS3939 JS3939'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (GAW) JS3939'STATION MARK AND REFERENCE MARKS WERE FOUND IN GOOD CONDITION JS3939'AS DESCRIBED BY R.M. BISHOP IN 1972. JS3939' JS3939'TO REACH STATION FROM STATE HIGHWAY 88 AND IRON MOUNTAIN ROAD, JS3939'GO NORTHWESTERLY 1.6 MILES ON IRON MOUNTAIN ROAD TO ROAD ON LEFT, JS3939'TURN LEFT AND GO 2.7 MILES WESTERLY ALONG MAIN TRAVELED ROAD JS3939'TO LEEK SPRINGS LOOKOUT AND STATION. JS3939' JS3939'STATION MARK IS A STANDARD USC AND GS DISK STAMPED LEEK JS3939'1940 SET IN A CONCRETE BLOCK PROJECTING 6 INCHES, 73.0 FEET JS3939'NORTHEAST OF THE NORTHEAST CORNER OF GARAGE, 120.0 FEET JS3939'EAST-NORTHEAST OF NEW LOOKOUT TOWER. JS3939' JS3939'REFERENCE MARK 1 IS A STANDARD USC AND GS DISK STAMPED LEEK NO. JS3939'1 1940 SET IN BEDROCK NORTHEAST OF STATION AND 2.5 FEET LOWER. JS3939' JS3939'REFERENCE MARK 2 IS A STANDARD USC AND GS DISK STAMPED LEEK NO. JS3939'2 1940 SET IN BEDROCK WEST-NORTHWEST OF STATION AND 7.0 FEET JS3939'LOWER. JS3939' JS3939'AZIMUTH MARK IS A NGS DISK STAMPED LEEK 1940 NO. 3 1972 SET IN JS3939'DRILL HOLE IN LARGE FLAT ROCK PROJECTING 0.8 FOOT, 90 FEET JS3939'SOUTHWEST OF AN ABANDONED WOOD FENCE, SOUTH AND 5 FEET LOWER JS3939'THAN A LARGE BOULDER WHICH IS THE HIGHEST POINT OF KNOLL. JS3939' JS3939'TO REACH AZIMUTH MARK FROM STATION, RETURN TO IRON MOUNTAIN JS3939'ROAD, TURN LEFT (NORTH) AND GO 1.0 MILE TO ROAD ON LEFT, JS3939'TURN LEFT AND GO 1.4 MILES TO CATTLE GUARD, PACK 800 FEET JS3939'WEST ALONG FENCE TO MARK. JS3939' JS3939'HEIGHT OF LIGHT ABOVE STATION MARK 4.46 FEET. JS3939' JS3939'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--10.2 MILES JS3939'S. OF KYBURZ JS3939 JS3939 STATION RECOVERY (1974) JS3939 JS3939'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1974 JS3939'THE LOT WAS DESTROYED. A NEW LOT WAS BUILT ABOUT 120 FT FROM JS3939'STATION AND WAS INTERSECTED BY CDH IN 1972. RECOVERED AS JS3939'DESCRIBED. ALL MARKS IN GOOD CONDITION. NEW TO JS3939'REACH FOLLOWS--TO REACH FROM LUMBERYARD RANGER STATION, DRIVE JS3939'9.05 MI NE. ALONG STATE HWY. 88 TO IRON MTN. RD. TURN LEFT 1.65 JS3939'MI TO SIGN LEEK SPRINGS LOT 3. TURN LEFT ON DIRT RD. 1.15 MI TO JS3939'RD. FORKS. TAKE LEFT FORK 0.2 MI TO RD. FORK. TAKE RIGHT FORK 1.3 JS3939'MI TO STATION ENE. OF LOT.