National Geodetic Survey, Retrieval Date = OCTOBER 31, 1999 EV9281 *********************************************************************** EV9281 DESIGNATION - CRYSTAL LAKE H 7A EV9281 PID - EV9281 EV9281 STATE/COUNTY- CA/LOS ANGELES EV9281 USGS QUAD - CRYSTAL LAKE (1974) EV9281 EV9281 *CURRENT SURVEY CONTROL EV9281 ___________________________________________________________________ EV9281* NAD 83(1992)- 34 20 42.03347(N) 117 50 23.77035(W) ADJUSTED EV9281* NAVD 88 - 2516.1 (meters) 8255. (feet) VERTCON EV9281 ___________________________________________________________________ EV9281 EPOCH DATE - 1991.35 EV9281 LAPLACE CORR- 7.67 (seconds) DEFLEC99 EV9281 GEOID HEIGHT- -31.23 (meters) GEOID99 EV9281 EV9281 HORZ ORDER - SECOND EV9281 EV9281.The horizontal coordinates were established by classical geodetic methods EV9281.and adjusted by the National Geodetic Survey in June 1996. EV9281.The horizontal coordinates are valid at the epoch date displayed above. EV9281.The epoch date for horizontal control is a decimal equivalence EV9281.of Year/Month/Day. EV9281 EV9281.The NAVD 88 height was computed by applying the VERTCON shift value to EV9281.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) EV9281 EV9281.The Laplace correction was computed from DEFLEC99 derived deflections. EV9281 EV9281.The geoid height was determined by GEOID99. EV9281 EV9281; North East Units Scale Converg. EV9281;SPC CA 5 - 1,947,975.96 6,609,982.26 sFT 0.99994708 +0 05 28.5 EV9281;SPC CA 5 - 593,744.259 2,014,726.622 MT 0.99994708 +0 05 28.5 EV9281;UTM 11 - 3,800,730.476 422,747.694 MT 0.99967356 -0 28 26.0 EV9281 EV9281|---------------------------------------------------------------------| EV9281| PID Reference Object Distance Geod. Az | EV9281| dddmmss.s | EV9281| CRYSTAL LAKE H 7A RM 1 3.141 METERS 14614 | EV9281| CRYSTAL LAKE H 7A RM 2 2.604 METERS 19228 | EV9281|---------------------------------------------------------------------| EV9281 EV9281 SUPERSEDED SURVEY CONTROL EV9281 EV9281 NAD 83(1986)- 34 20 42.03134(N) 117 50 23.76954(W) AD(1984.00) 2 EV9281 NGVD 29 - 2515.0 (m) 8251. (f) VERT ANG EV9281 EV9281.Superseded values are not recommended for survey control. EV9281.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. EV9281.See file dsdata.txt to determine how the superseded data were derived. EV9281 EV9281_MARKER: DS = TRIANGULATION STATION DISK EV9281_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN EV9281+WITH SETTING: PAVEMENT EV9281_MAGNETIC: N = NO MAGNETIC MATERIAL EV9281_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO EV9281+STABILITY: SURFACE MOTION EV9281 EV9281 HISTORY - Date Condition Recov. By EV9281 HISTORY - 1978 MONUMENTED CADT EV9281 EV9281 STATION DESCRIPTION EV9281 EV9281'DESCRIBED BY CALTRANS 1978 (RLS) EV9281'THE STATION IS LOCATED 14 MILES, AIRLINE, SOUTHEAST OF LITTLEROCK, 15 EV9281'MILES, AIRLINE, NORTH-NORTHEAST OF AZUSA AT THE TOP OF MOUNT ISLIP EV9281'WHICH IS SOUTHEAST OF THE JUNCTION OF STATE ROUTE 2 AND STATE EV9281'ROUTE 39. EV9281' EV9281'TO REACH THE STATION FROM THE BIG PINES RANGER STATION NEAR THE INTER EV9281'SECTION OF THE ANGELES CREST HIGHWAY (STATE ROUTE 2) AND THE BIG PINES EV9281'HIGHWAY (COUNTY ROAD N-4), GO WEST ON ANGELES CREST HIGHWAY FOR 10.3 EV9281'MILES TO DAWSON SADDLE AND A CALTRANS HIGHWAY STORAGE BUILDING ON THE EV9281'RIGHT. CONTINUE, WEST, FOR 4.2 MILES TO A SIDE ROAD ON THE LEFT AND A EV9281'LOCKED GATE. THIS IS 500 FEET SOUTHEAST OF THE PINE HOLLOW PICNIC EV9281'AREA. TURN LEFT ONTO THE SIDE ROAD, PASS THROUGH GATE, AND CONTINUE EV9281'UPHILL FOR 1.6 MILES TO A SIDE DIRT ROAD ON THE RIGHT. TURN RIGHT AND EV9281'DESCEND FOR 0.05 MILE TO LITTLE JIMMY CAMP GROUND AND END OF TRUCK EV9281'TRAVEL AT A SIGN MARKED---MT ISLIP TRAIL SUMMIT 8250---. PACK WEST EV9281'THEN SOUTH OUT OF CAMP GROUND ON HIKING TRAIL TO THE SUMMIT AND THE EV9281'STATION A ONE HOUR PACK. THE STATION IS ON THE SITE OF AN ABANDONED EV9281'LOOKOUT TOWER WHERE ONLY THE FOOTINGS ARE LEFT. EV9281' EV9281'THE STATION MARK IS A STANDARD CALIFORNIA DEPARTMENT OF TRANSPORTATION EV9281'DISK STAMPED---CRYSTAL LAKE H 7A 1978---EPOXIED ON A 1 FOOT BY 3 FOOT EV9281'CONCRETE PAD WHICH PROJECTS 1 FOOT ABOVE THE GROUND. THE CONCRETE PAD EV9281'WAS A FOOTING FOR A LADDER LEADING TO THE LOOKOUT TOWER WHICH HAS NOW EV9281'BEEN REMOVED. EV9281' EV9281'REFERENCE MARK NO. 1 IS A STANDARD CALIFORNIA DIVISION OF HIGHWAYS EV9281'(CADH) DISK STAMPED---CRYSTAL LAKE H 7A NO 1 1978---EPOXIED ON THE EV9281'SURFACE OF A SOUTHEASTERLY FOOTING WHICH SUPPORTED A LOOKOUT TOWER EV9281'AT ONE TIME. THE REFERENCE MARK PROJECTS 1.5 FEET ABOVE THE GROUND EV9281'SURFACE AND IS THE SAME ELEVATION AS THE STATION. EV9281' EV9281'REFERENCE MARK NO. 2 IS A STANDARD (CADH) DISK STAMPED---CRYSTAL LAKE EV9281'H 7A NO 2 1978---EPOXIED ON THE SURFACE OF A SOUTHWESTERLY FOOTING EV9281'WHICH SUPPORTED A LOOKOUT TOWER AT ONE TIME. THE REFERENCE MARK EV9281'PROJECTS 1.0 FOOT ABOVE THE GROUND SURFACE AND IS THE SAME ELEVATION EV9281'AS THE STATION.