National Geodetic Survey, Retrieval Date = OCTOBER 31, 1999 EV4122 *********************************************************************** EV4122 DESIGNATION - MT BADEN POWELL EV4122 PID - EV4122 EV4122 STATE/COUNTY- CA/LOS ANGELES EV4122 USGS QUAD - CRYSTAL LAKE (1974) EV4122 EV4122 *CURRENT SURVEY CONTROL EV4122 ___________________________________________________________________ EV4122* NAD 83(1992)- 34 21 30.38773(N) 117 45 52.61527(W) ADJUSTED EV4122* NAVD 88 - 2867.3 (meters) 9407. (feet) VERTCON EV4122 ___________________________________________________________________ EV4122 EPOCH DATE - 1991.35 EV4122 LAPLACE CORR- -2.12 (seconds) DEFLEC99 EV4122 GEOID HEIGHT- -31.11 (meters) GEOID99 EV4122 EV4122 HORZ ORDER - SECOND EV4122 EV4122.The horizontal coordinates were established by classical geodetic methods EV4122.and adjusted by the National Geodetic Survey in June 1996. EV4122.The horizontal coordinates are valid at the epoch date displayed above. EV4122.The epoch date for horizontal control is a decimal equivalence EV4122.of Year/Month/Day. EV4122 EV4122.The NAVD 88 height was computed by applying the VERTCON shift value to EV4122.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) EV4122 EV4122.The Laplace correction was computed from DEFLEC99 derived deflections. EV4122 EV4122.The geoid height was determined by GEOID99. EV4122 EV4122; North East Units Scale Converg. EV4122;SPC CA 5 - 1,952,908.73 6,632,706.53 sFT 0.99994546 +0 08 03.0 EV4122;SPC CA 5 - 595,247.772 2,021,652.995 MT 0.99994546 +0 08 03.0 EV4122;UTM 11 - 3,802,165.164 429,686.630 MT 0.99966094 -0 25 53.6 EV4122 EV4122|---------------------------------------------------------------------| EV4122| PID Reference Object Distance Geod. Az | EV4122| dddmmss.s | EV4122| NORTH BALDY AUX 24.532 METERS 00223 | EV4122| NORTH BALDY RS 20.166 METERS 29253 | EV4122|---------------------------------------------------------------------| EV4122 EV4122 SUPERSEDED SURVEY CONTROL EV4122 EV4122 NAD 83(1986)- 34 21 30.38570(N) 117 45 52.61385(W) AD(1984.00) 2 EV4122 NAD 27 - 34 21 30.38150(N) 117 45 49.39780(W) AD( ) 1 EV4122 NGVD 29 - 2866.2 (m) 9404. (f) VERT ANG EV4122 EV4122.Superseded values are not recommended for survey control. EV4122.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. EV4122.See file dsdata.txt to determine how the superseded data were derived. EV4122 EV4122_MARKER: DD = SURVEY DISK EV4122_SETTING: 80 = SET IN A BOULDER EV4122_MAGNETIC: N = NO MAGNETIC MATERIAL EV4122_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO EV4122+STABILITY: SURFACE MOTION EV4122 EV4122 HISTORY - Date Condition Recov. By EV4122 HISTORY - 1955 MONUMENTED CA-037 EV4122 HISTORY - 1978 GOOD CADT EV4122 EV4122 STATION DESCRIPTION EV4122 EV4122'DESCRIBED BY LOS ANGELES COUNTY CALIFORNIA 1955 EV4122'STATION IS ON THE SUMMIT OF MOUNT BADEN POWELL IN THE SAN EV4122'GABRIEL MOUNTAINS AND ON THE BRINK OVER LOOKING MINE GULCH, EV4122'18 FEET S OF AN IRON FLAG POLE OR MAST. EV4122' EV4122'STATION IS A STANDARD USGS 4-INCH BRASS TABLET, INSCRIBED MARK EV4122'U.S. GEOLOGICAL SURVEY IN COOPERATION WITH LOS ANGELES COUNTY EV4122'ELEV ABOVE SEA LEVEL R. 93 1929 CEMENTED TO A GRANITE 7-INCH EV4122'SQUARE STONE EXTENDING 4 INCHES ABOVE THE SURFACE. EV4122' EV4122'R.M. 1 IS A STANDARD 4-INCH COUNTY SURVEYOR REFERENCE MONUMENT EV4122'CEMENTED TO A LARGE ROCK AND IS N 25 DEG 21 MIN 37 SEC, 79.78 EV4122'FEET FROM THE STATION. EV4122' EV4122'R.M. 2 IS A USGS STANDARD BRASS TABLET STAMPED NORTH BALDY EV4122'USGS 1930, ABOUT 15 FEET BELOW THE SUMMIT AND CEMENTED TO A EV4122'LARGE BOULDER. IT IS N 67 DEG 24 MIN 30 SEC W, 66.14 FEET FROM EV4122'STATION. EV4122' EV4122'MOUNT BADEN POWELL E-5 AUX IS A STANDARD COUNTY SURVEYOR TABLET EV4122'STAMPED NORTH BALDY AUX MOUNT BADEN POWELL E-5 R.E. 63 1954 EV4122'CEMENTED TO A LARGE BOULDER, 84.345 FEET NNW FROM STATION. EV4122' EV4122'TO REACH STATION FROM VINCENT GAP TAKE TRAIL TO THE SUMMIT EV4122'OF MT. BADEN POWELL. EV4122 EV4122 STATION RECOVERY (1978) EV4122 EV4122'RECOVERY NOTE BY CALTRANS 1978 (RLS) EV4122'THE STATION MARK AND REFERENCE MARK NO. 2 WERE RECOVERED IN GOOD EV4122'CONDITION AS DESCRIBED BY THE LOS ANGELES COUNTY SURVEYOR IN 1955. EV4122'REFERENCE MARK NO. 1 WAS SEARCHED FOR AND NOT FOUND. NORTH BALDY AUX EV4122'1954 WAS USED AS REFERENCE MARK NO. 3 AND A NEW DESCRIPTION FOLLOWS. EV4122' EV4122'THE STATION IS LOCATED ON THE SUMMIT OF MOUNT BADEN POWELL IN THE SAN EV4122'GABRIEL MOUNTAINS AND ON THE BRINK OVER LOOKING MINE GULCH, 18 FEET EV4122'SOUTH OF A 4 INCH IRON PIPE. THE STATION IS 15 MILES, AIRLINE, SOUTH EV4122'EAST FROM LITTLEROCK, 10 MILES, AIRLINE, WEST FROM WRIGHTWOOD, 22 EV4122'MILES, AIRLINE, NORTH OF POMONA. EV4122' EV4122'TO REACH THE STATION FROM THE INTERSECTION OF BIG PINES ROAD (COUNTY EV4122'ROAD N-4) AND THE ANGELES CREST HIGHWAY (STATE ROUTE 2) AT THE BIG EV4122'PINES RANGER STATION, GO WEST ON ANGELES CREST HIGHWAY FOR 5.1 MILES EV4122'TO VINCENT GAP AND A PARKING AREA ON THE LEFT. TURN LEFT ONTO THE EV4122'PARKING AREA, PARK, END OF TRUCK TRAVEL. BEGIN A 4 MILES AND 3 TO 4 EV4122'HOUR PACK AND HIKE UP THE---MOUNT BADEN POWELL TRAIL---, A 2800 FEET EV4122'GAIN IN ELEVATION, TO THE TOP OF THE MOUNTAIN AND THE STATION. EV4122' EV4122'THE STATION IS A STANDARD U.S. GEOLOGIAL SURVEY DISK STAMPED---R 93 EV4122'1929--- CEMENTED ON THE TOP OF A 1 FOOT TRIANGULAR GRANITE ROCK THAT EV4122'PROJECTS 6 INCHES ABOVE THE GROUND. EV4122' EV4122'REFERENCE MARK NO. 2 IS A STANDARD U.S. GEOLOGICAL SURVEY DISK EV4122'STAMPED---NORTH BALDY RS 1930---CEMENTED IN THE TOP OF A 1 FOOT BY EV4122'2 FOOT ROCK OUT CROPPING THAT PROJECTS 1 FOOT ABOVE THE GROUND. IT IS EV4122'66 FEET WEST AND 8 FEET LOWER THAN THE STATION. EV4122' EV4122'N. BALDY AUX IS A LOS ANGELES COUNTY DISK STAMPED---MT. BADEN EV4122'POWELL E-5 N. BALDY AUX 1954---CEMENTED ON THE TOP OF A 1 FOOT SQUARE EV4122'GRANITE ROCK THAT PROJECTS 1 FOOT ABOVE THE GROUND. IT IS 80 FEET EV4122'NORTH AND 3 FEET LOWER THAN THE STATION.