National Geodetic Survey, Retrieval Date = OCTOBER 31, 1999 DX1779 *********************************************************************** DX1779 DESIGNATION - SANTIAGO DX1779 PID - DX1779 DX1779 STATE/COUNTY- CA/ORANGE DX1779 USGS QUAD - SANTIAGO PEAK (1988) DX1779 DX1779 *CURRENT SURVEY CONTROL DX1779 ___________________________________________________________________ DX1779* NAD 83(1992)- 33 42 37.95829(N) 117 32 03.07415(W) ADJUSTED DX1779* NAVD 88 - 1734.36 (+/-2cm) 5690.1 (feet) VERTCON DX1779 ___________________________________________________________________ DX1779 EPOCH DATE - 1991.35 DX1779 LAPLACE CORR- 4.80 (seconds) DEFLEC99 DX1779 GEOID HEIGHT- -33.22 (meters) GEOID99 DX1779 DX1779 HORZ ORDER - FIRST DX1779 VERT ORDER - SECOND CLASS 0 (See Below) DX1779 DX1779.The horizontal coordinates were established by classical geodetic methods DX1779.and adjusted by the National Geodetic Survey in June 1996. DX1779.The horizontal coordinates are valid at the epoch date displayed above. DX1779.The epoch date for horizontal control is a decimal equivalence DX1779.of Year/Month/Day. DX1779 DX1779.The NAVD 88 height was computed by applying the VERTCON shift value to DX1779.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DX1779.The vertical order pertains to the superseded datum. DX1779 DX1779.The Laplace correction was computed from DEFLEC99 derived deflections. DX1779 DX1779.The geoid height was determined by GEOID99. DX1779 DX1779; North East Units Scale Converg. DX1779;SPC CA 6 - 2,204,574.38 6,171,134.79 sFT 0.99997568 -0 42 20.5 DX1779;SPC CA 6 - 671,955.615 1,880,965.647 MT 0.99997568 -0 42 20.5 DX1779;UTM 11 - 3,730,190.486 450,501.993 MT 0.99963020 -0 17 47.3 DX1779 DX1779: Primary Azimuth Mark Grid Az DX1779:SPC CA 6 - BOUCHER 2 126 39 12.1 DX1779:UTM 11 - BOUCHER 2 126 14 38.9 DX1779 DX1779|---------------------------------------------------------------------| DX1779| PID Reference Object Distance Geod. Az | DX1779| dddmmss.s | DX1779| DX1777 SANTIAGO ECC 11.831 METERS 03235 | DX1779| DX1778 SANTIAGO RM 1 10.821 METERS 05320 | DX1779| SANTIAGO RM 6 7.053 METERS 05925 | DX1779| DX5081 BOUCHER 2 APPROX.70.7 KM 1255651.6 | DX1779| SANTIAGO RM 7 6.548 METERS 21526 | DX1779| DX4296 RP 1 4.463 METERS 21959 | DX1779| DX4298 SANTIAGO RM 8 3.636 METERS 22733 | DX1779| SANTIAGO AZ MK 2781518.5 | DX1779|---------------------------------------------------------------------| DX1779 DX1779 SUPERSEDED SURVEY CONTROL DX1779 DX1779 NAD 83(1986)- 33 42 37.95621(N) 117 32 03.07429(W) AD(1984.00) 1 DX1779 NAD 27 - 33 42 37.88600(N) 117 31 59.90300(W) AD( ) 1 DX1779 NGVD 29 - 1733.526 (m) 5687.41 (f) ADJUSTED 2 0 DX1779 DX1779.Superseded values are not recommended for survey control. DX1779.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DX1779.See file dsdata.txt to determine how the superseded data were derived. DX1779 DX1779_MARKER: B = BOLT DX1779_SETTING: 80 = SET IN A BOULDER DX1779_MAGNETIC: N = NO MAGNETIC MATERIAL DX1779_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO DX1779+STABILITY: SURFACE MOTION DX1779 DX1779 HISTORY - Date Condition Recov. By DX1779 HISTORY - 1899 MONUMENTED CGS DX1779 HISTORY - 1933 MONUMENTED CGS DX1779 HISTORY - 1939 MONUMENTED CGS DX1779 HISTORY - 1951 MONUMENTED CADH DX1779 HISTORY - 1953 MONUMENTED CGS DX1779 HISTORY - 1955 GOOD NGS DX1779 HISTORY - 1956 GOOD CGS DX1779 HISTORY - 1969 GOOD CA-059 DX1779 HISTORY - 1973 GOOD NGS DX1779 HISTORY - 1974 GOOD NGS DX1779 HISTORY - 1975 GOOD NGS DX1779 HISTORY - 1986 GOOD NGS DX1779 DX1779 STATION DESCRIPTION DX1779 DX1779'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 DX1779'ON HIGHEST AND MOST SOUTHEASTERN PEAK OF SANTIAGO MOUNTAIN, DX1779'1.0 METER (3 FEET) SE OF CENTER OF 75-FOOT FIRE LOOKOUT TOWER. DX1779'OPENING IN CONCRETE PLATFORM ALLOWS ACCESS TO STATION MARK. DX1779'TO REACH FROM INTERSECTION OF SIXTH AND MAIN STREETS IN CORONA, DX1779'GO S 1.3 MILES ON MAIN STREET TO ONTARIO AVENUE, TURN LEFT DX1779'ONTO ONTARIO AVENUE AND PROCEED UP TEMESCAL CANYON 5.9 MILES DX1779'TO OLIVE ORCHARD ON RIGHT AND STANDARD OIL STATION, TURN DX1779'RIGHT AT POINT 100 YARDS BEFORE REACHING FILLING STATION DX1779'AT SIGN SANTIAGO PEAK LOOKOUT 12 MILES--BEDFORD MOTORWAY AND DX1779'CONTINUE 12 MILES TO FIRE LOOKOUT TOWER AND STATION SITE. DX1779'UNDERGROUND MARK IS CENTER OF STONE BOTTLE 3-1/2 FEET BELOW DX1779'SURFACE. AND SURFACE MARK IS COPPER BOLT IN LARGE STONE DX1779'PROJECTING ABOUT 3 INCHES ABOVE TOP OF CEMENT PIER AND DX1779'DEPRESSED 3 INCHES BELOW CONCRETE PLATFORM. ORIGINAL REFERENCE DX1779'MARKS WERE DRILL HOLES IN ROCK FILLED WITH LEAD AT DX1779'FOLLOWING DISTANCES AND AZIMUTHS FROM STATION--10.31 FEET, 199 DX1779'DEG 23 MIN. 12.65 FEET, 273 DEG 48 MIN. 26.70 FEET, 25 DEG DX1779'41 MIN. AND 8.35 FEET, 105 DEG 10 MIN. IN 1923, STANDARD DX1779'REFERENCE DISK WAS ESTABLISHED IN ROCK OUTCROP 10.880 METERS DX1779'(35.70 FEET) FROM STATION IN AZIMUTH 233 DEG 20 MIN. IN DX1779'1929, ORIGINAL REFERENCE MARKS WERE NOT RECOVERED. DX1779'STATION SANTIAGO, ECCENTRIC IS 10.528 METERS (34.54 FEET) FROM DX1779'STATION IN AZIMUTH 240 DEG 27 MIN. DX1779 DX1779 STATION RECOVERY (1939) DX1779 DX1779'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (ANS) DX1779'ON THE HIGHEST AND MOST SOUTHEASTERN PEAK OF SANTIAGO MOUNTAIN, DX1779'1 METER SE OF CENTER OF 75 FOOT STEEL FIRE LOOKOUT TOWER. DX1779'OPENING IN CONCRETE PLATFORM ALLOWS ACCESS TO STATION MARK. DX1779' DX1779'UNDERGROUND MARK IS CENTER OF STONE BOTTLE 3-1/2 FEET BELOW DX1779'SURFACE. SURFACE MARK IS A COPPER BOLT IN LARGE STONE PROJECTING DX1779'ABOUT 3 INCHES ABOVE TOP OF CEMENT PIER, AND DEPRESSED 3 INCHES DX1779'BELOW CONCRETE PLATFORM. DX1779' DX1779'SANTIAGO ECCENTRIC 1939 IS A STANDARD DISK SET IN DRILL HOLE DX1779'6 INCHES FROM THE NW CORNER OF A 6 FOOT BY 6 FOOT CONCRETE DX1779'PLATFORM AT THE NW CORNER OF LOOKOUT HOUSE, AND APPROXIMATELY DX1779'9 FEET FROM THE NW CORNER OF THE HOUSE. MARK IS STAMPED, DX1779'SANTIAGO ECCENTRIC 1939, AND IS ABOUT 5 FEET LOWER THAN THE DX1779'STATION MARK. DX1779' DX1779'REFERENCE MARK NO. 1, 1923 IS A STANDARD DISK SET IN ROCK DX1779'OUTCROP, STAMPED REFERENCE MARK NO. 1 1923. DX1779' DX1779'ORIGINAL REFERENCE MARKS ARE LOST. DX1779' DX1779'ALL STATIONS WERE OBSERVED FROM 4 FOOT STAND AT SANTIAGO DX1779'1899, EXCEPT IDA 1939 WHICH WAS OBSERVED FROM SANTIAGO ECCENTRIC DX1779'1939 FROM A 4 FOOT STAND. LIGHT WAS SHOWN TO ALL STATIONS DX1779'FROM A 4 FOOT STAND AT SANTIAGO 1899 EXCEPT LIGHT SHOWN TO DX1779'IDA 1939 FROM 4 FOOT STAND AT SANTIAGO ECCENTRIC 1939, AND DX1779'LIGHT SHOWN TO MOCK (METROPOLITAN WATER DISTRICT 1931) 1939 DX1779'WHICH WAS SHOWN FROM SANTIAGO ECCENTRIC NO. 2 (TEMPORARY DX1779'ECCENTRIC) MOCK (METROPOLITAN WATER DISTRICT 1931) 1939 WAS DX1779'NOT OBSERVED FROM EITHER STATION AT SANTIAGO. DX1779' DX1779'REACHED FROM THE JUNCTION OF HIGHWAYS 395, 74, AND 71 IN DX1779'ELSINORE BY GOING NW ON HIGHWAY 71, 10.3 MILES. TURN LEFT OFF DX1779'71 ON INDIAN TRUCK TRAIL. GO 0.5 MILE, TAKE LEFT FORK. GO DX1779'7.5 MILES, TAKE RIGHT FORK. GO 2.4 MILES, TURN SHARP LEFT, GO DX1779'0.5 MILE TO LOOKOUT TOWER AND END OF TRUCK TRAVEL. DX1779 DX1779 STATION RECOVERY (1951) DX1779 DX1779'RECOVERY NOTE BY CA DIV OF HIGHWAYS 1951 (RBF) DX1779'STATION WAS RECOVERED IN GOOD CONDITION. MARK WAS UNSTAMPED. DX1779'SANTIAGO ECCENTRIC AND ALL REFERENCE MARKS ARE MISSING DUE DX1779'TO CONSTRUCTION OF TELEPHONE COMPANY BUILDING. DX1779 DX1779 STATION RECOVERY (1953) DX1779 DX1779'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (RAG) DX1779'STATION MARK WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION. DX1779'THE ORIGINAL LOOK-OUT TOWER HAS BEEN REMOVED AND A NEW ONE DX1779'MOUNTED ATOP A RADIO-TELEPHONE MICRO-WAVE STATION HAS BEEN DX1779'CONSTRUCTED IN ITS STEAD. THE STATION MARK IS 19.6 FEET WEST DX1779'OF THE SOUTHWEST CORNER OF THE MICRO-WAVE BUILDING. DX1779' DX1779'THE ORIGINAL MARKS WERE NOT RECOVERED AND REFERENCE MARK 1, DX1779'STAMPED SANTIAGO R.M. NO 1 1939, WAS SEARCHED FOR AND NOT FOUND. DX1779' DX1779'SANTIAGO ECCENTRIC WAS SEARCHED FOR AND NOT RECOVERED. DX1779' DX1779'REFERENCE MARKS 6, 7 AND 8 WERE ESTABLISHED THIS YEAR. DX1779' DX1779'REFERENCE MARK 6, A STANDARD REFERENCE MARK DISK CEMENTED DX1779'IN A DRILL HOLE IN THE CONCRETE FOUNDATION FOR STEPS OF THE DX1779'MICRO-WAVE BUILDING IS STAMPED SANTIAGO NO 6 1899. IT IS DX1779'7.050 METERS, 23.13 FEET, EAST-NORTHEAST OF STATION IN AZIMUTH DX1779'239 DEG 23 MIN. DX1779' DX1779'REFERENCE MARK 7, A STANDARD REFERENCE MARK DISK CEMENTED DX1779'IN A DRILL HOLE IN LARGE ROCK OUTCROP, IS STAMPED SANTIAGO DX1779'NO 7 1899. IT IS 6.538 METERS, 21.45 FEET, SOUTH-SOUTHWEST DX1779'OF STATION IN AZIMUTH 35 DEG 33 MIN. DX1779' DX1779'REFERENCE MARK 8, A STANDARD REFERENCE MARK DISK CEMENTED IN DX1779'A DRILL HOLE IN THE CONCRETE ROOF OF THE MICRO-WAVE BUILDING, DX1779'IS 17.031 METERS, 55.88 FEET, FROM STATION IN AZIMUTH 195 DEG DX1779'33 MIN 37 SEC. THE MARK, STAMPED SANTIAGO NO 8 1899, IS DX1779'4.10 FEET EAST OF THE WEST EDGE OF ROOF, 4.41 FEET SOUTH DX1779'OF THE NORTH EDGE OF ROOF AND IT WAS NECESSARY TO USE THIS DX1779'MARK AS AN ECCENTRIC POINT TO OBSERVE UPON STATIONS JURUPA, DX1779'ARMADA AND CLOUD. DX1779' DX1779'STATION WAS REACHED AS FOLLOWS--FROM THE LINCOLN HIGH SCHOOL DX1779'IN EL MODENO DRIVE EAST ON CHAPMAN AVENUE FOR 2.9 MILES DX1779'TO CROSS-ROADS. TURN RIGHT AS PER SIGN, SILVERADO 10, DX1779'AND DRIVE 5.9 MILES TO FORKS. KEEP LEFT FORK, SILVERADO CANYON DX1779'ROAD, AND CONTINUE 4.6 MILES TO THE VILLAGE OF SILVERADO. DX1779'CONTINUE STRAIGHT AHEAD THROUGH THE VILLAGE OF SILVERADO AND DX1779'UP THE CANYON FOR 0.2 MILE TO THE END OF THE MACADAM ROAD. DX1779'CONTINUE BLADED ROAD UP CANYON 0.2 MILES TO FORKS. KEEP RIGHT DX1779'FORK, UP CANYON, AND DRIVE 6.4 MILES TO FORKS AND SIGNS DX1779'READING, MAIN DIVIDE T.T., SANTIAGO PEAK 4. KEEP RIGHT FORK DX1779'AND CONTINUE 3.1 MILES TO SUMMIT OF PEAK AND STATION. DX1779' DX1779'OBSERVATIONS WERE MADE FROM 4 FOOT STANDS SET OVER THE TRUE DX1779'STATION AND REFERENCE MARK 8. DX1779 DX1779 STATION RECOVERY (1955) DX1779 DX1779'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1955 DX1779'20.2 MI S FROM CORONA. DX1779'THIS BENCH MARK MAY BE REACHED FROM THE CITY HALL BY GOING 7.2 DX1779'MILES SOUTHEAST ALONG STATE HIGHWAY 71, THENCE 5.8 MILES DX1779'SOUTHWEST ALONG THE BEDFORD CANYON MOTORWAY, THENCE 6.8 MILES DX1779'SOUTHEAST ALONG THE MAIN DIVIDE TRUCK TRAIL, AND THENCE 0.5 DX1779'MILE WEST ALONG A ROAD LEADING TO SANTIAGO PEAK LOOKOUT. IT IS DX1779'AT SANTIAGO PEAK LOOKOUT, UNDERNEATH THE STEEL TOWER, AT THE DX1779'CENTER OF A CONCRETE SLAB, 3 INCHES BELOW THE SURFACE OF THE DX1779'SLAB, AND COVERED WITH A STEEL PLATE. A COPPER BOLT. DX1779'NOTE-- THIS BENCH MARK IS KNOWN AS SANTIAGO PEAK TRIANGULATION DX1779'STATION. DX1779 DX1779 STATION RECOVERY (1956) DX1779 DX1779'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (RLE) DX1779'THE ORIGINAL STATION WAS RECOVERED AND FOUND IN GOOD CONDITION. DX1779'THE ORIGINAL UNITED STATES FOREST SERVICE LOOKOUT TOWER HAS BEEN DX1779'REMOVED AND A NEW ONE ESTABLISHED ATOP THE RADIO-TELEPHONE DX1779'MICRO WAVE STATION THAT HAS BEEN BUILT TO THE NORTHEAST OF THE DX1779'OLD SITE. HOWEVER PART OF THE CONCRETE SLAB AND THE CONCRETE DX1779'FOOTINGS OF THE OLD LOOKOUT TOWER ARE STILL IN EVIDENCE. DX1779' DX1779'A COMPLETE AND THOROUGH SEARCH WAS MADE FOR THE ORIGINAL DX1779'REFERENCE MARKS AND THE REFERENCE MARK STAMPED SANTIAGO R.M. DX1779'NO 1 1939, BUT THEY COULD NOT BE FOUND AND ARE THOUGHT LOST DX1779'BY CONSTRUCTION WORK. DX1779' DX1779'REFERENCE MARKS NO. 6, 7 AND 8 ESTABLISHED BY ROSS A. GILMORE DX1779'IN 1953 WERE RECOVERED AND FOUND IN GOOD CONDITION. REFERENCE DX1779'MARK NO. 8 COULD NOT BE CHECKED FOR DIRECTION OR DISTANCE DX1779'DURING THIS OCCUPATION AS ADMITTANCE TO THE ROOF OF THE DX1779'MICRO-WAVE BUILDING COULD NOT BE OBTAINED. THE STAMPING DX1779'SANTIAGO NO 8 1899 COULD BE CLEARLY READ FROM THE STEPS DX1779'OF THE LOOKOUT TOWER HOWEVER. DX1779' DX1779'AN AZIMUTH MARK WAS ESTABLISHED BY THIS PARTY. DX1779' DX1779'FOLLOWING IS A NEW AND COMPLETE DESCRIPTION-- DX1779' DX1779'THE STATION IS ON THE HIGHEST AND SOUTHEAST PEAK OF SANTIAGO DX1779'MOUNTAIN IN THE TRABUCO DISTRICT OF THE CLEVELAND NATIONAL DX1779'FOREST, ABOUT 16-1/2 MILES EAST OF TUSTIN, 11-1/2 MILES SOUTH DX1779'OF CORONA, 11 MILES WEST OF ELSINORE AND 8 MILES NORTH OF DX1779'SAN JUAN HOT SPRINGS. IT IS 19.6 FEET WEST OF THE SOUTHWEST DX1779'CORNER OF THE PACIFIC TELEPHONE COMPANY MICRO-WAVE BUILDING DX1779'ON TOP OF A POINT OF ROCK THAT HAS A GRADED ROAD NEARLY DX1779'ENCIRCLING IT. THE SURFACE MARK IS A COPPER BOLT LEADED INTO A DX1779'LARGE STONE PROJECTING ABOUT 3 INCHES ABOVE THE TOP OF A DX1779'CEMENT PIER AND DEPRESSED ABOUT 3 INCHES BELOW THE REMAINS OF DX1779'THE CONCRETE PLATFORM OF THE OLD LOOKOUT TOWER. AN OPENING DX1779'ABOUT 4 INCHES BY 8 INCHES IN THE OLD TOWER PLATFORM ALLOWS DX1779'ACCESS TO THE MARK. THE MARK BEARS NO STAMPING. (NO NOTE). DX1779' DX1779'REFERENCE MARK NO. 6 IS A STANDARD BRONZE DISK CEMENTED IN A DX1779'DRILL HOLE IN THE CONCRETE PLATFORM AT THE WEST ENTRANCE TO DX1779'THE MICRO-WAVE BUILDING AND THE DISK IS STAMPED SANTIAGO DX1779'NO 6 1899. (NO NOTE). DX1779' DX1779'REFERENCE MARK NO. 7 IS A STANDARD BRONZE DISK CEMENTED IN DX1779'A DRILL HOLE IN A LARGE ROCK OUTCROP AND THE DISK IS STAMPED DX1779'SANTIAGO NO 7 1899. (NOTE 12A). DX1779' DX1779'USFS RP 1 IS A UNITED STATES FOREST SERVICE MARK SET IN A DX1779'2 INCH PIPE FILLED WITH CONCRETE AND SET IN A MASS OF CONCRETE DX1779'AND PROJECTS ABOUT 8 INCHES ABOVE THE SURFACE OF THE GROUND. DX1779'THE POINT OBSERVED UPON WAS THE CENTER OF A NAIL IN THE DX1779'TOP OF THE MARK AND THE MARK WAS STAMPED USFS RP1. (NO NOTE). DX1779' DX1779'THE AZIMUTH MARK IS A STANDARD BRONZE DISK CEMENTED IN A DRILL DX1779'HOLE IN A LARGE ROCK OUTCROP, IS NEAR THE CENTER OF A LONG DX1779'EAST-WEST RIDGE, 30 FEET NORTH AND ABOUT 15 FEET ABOVE THE DX1779'CENTER OF THE MAIN DIVIDE TRUCK TRAIL LEADING TO THE STATION DX1779'AND 5 FEET SOUTHWEST OF A CAIRN. THE DISK IS STAMPED SANTIAGO DX1779' DX1779'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY DX1779'NO. 91 AND STATE ROUTE NO. 71 JUST SOUTH OF THE POST OFFICE IN DX1779'CORONA, GO SOUTH AND EAST ON STATE ROUTE NO. 71 FOR 9.9 MILES DX1779'TO THE TELECAL GUARD STATION ON THE LEFT, CONTINUE EASTERLY DX1779'ON STATE ROUTE NO. 71 FOR 2.4 MILES TO A T ROAD RIGHT AND A DX1779'SIGN INDIAN TRUCK TRAIL. HERE TURN RIGHT, ACROSS RAILROAD DX1779'TRACKS AND GO SOUTH ON A GRADED ROAD FOR 0.45 MILE TO A FORK DX1779'AND SIGN COMPTON RANCH, TAKE THE LEFT FORK AND GO EASTERLY DX1779'FOR 0.45 MILE TO A LOCKED GATE AT THE CLEVELAND NATIONAL DX1779'FOREST BOUNDRY. PASS THROUGH THIS GATE AND FOLLOW A WINDING DX1779'ROAD UP THE MOUNTAIN FOR 6.8 MILES TO A ROAD RIGHT AND A SIGN DX1779'SANTIAGO PEAK 4, TURN RIGHT AS PER SIGN AND FOLLOW A DX1779'WINDING ROAD UP THE MOUNTAIN FOR 4.6 MILES TO THE SUMMIT DX1779'AND THE STATION AS DESCRIBED. (NOTE--TO OBTAIN THE KEY DX1779'FOR THE ABOVE MENTIONED LOCKED GATE, GO EAST FROM THE DX1779'JUNCTION OF U.S. HIGHWAY NO. 91 AND STATE ROUTE NO. 71 DX1779'IN CORONA FOR ABOUT 0.7 MILE TO THE CLEVELAND NATIONAL FOREST DX1779'DISTRICT RANGER STATION ON THE LEFT.) DX1779' DX1779'TO REACH THE AZIMUTH MARK FROM THE STATION, FOLLOW THE MAIN DX1779'DIVIDE TRUCK TRAIL TOWARD SILVERADO FOR 2.9 MILES TO A POINT DX1779'JUST AFTER PASSING A LARGE CLEARING TO PERMIT TRAFFIC PASSING DX1779'AND THE MARK ON THE RIGHT IN A LARGE ROCK OUTCROP AS DESCRIBED. DX1779 DX1779 STATION RECOVERY (1969) DX1779 DX1779'RECOVERY NOTE BY ORANGE COUNTY CALIFORNIA 1969 DX1779'THE STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED. THE DX1779'DESCRIPTION TO REACH THE STATION IS ADEQUATE. DX1779 DX1779 STATION RECOVERY (1973) DX1779 DX1779'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (JLC) DX1779'THE STATION MARK, REFERENCE MARKS 6 AND 7, AND U.S. FOREST DX1779'SERVICE REFERENCE POINT 1, AND THE AZIMUTH MARK WERE RECOVERED IN DX1779'GOOD CONDITION. THE DISTANCE AND DIRECTION TO REFERENCE MARKS 6 DX1779'AND 7 AND REFERENCE POINT 1 COMPARED FAVORABLY WITH PREVIOUS DX1779'OBSERVATIONS. THE AZIMUTH MARK COULD NOT BE OBSERVED AT THIS DX1779'OCCUPATION BECAUSE OF AN ANTENNA ON LINE. REFERENCE MARK 8 WAS DX1779'NOT RECOVERED AT THIS OCCUPATION BECAUSE PERMISSION COULD NOT DX1779'BE OBTAINED TO GAIN ENTRANCE TO THE ROOF OF THE BUILDING, DX1779'ALTHOUGH IT IS BELIEVED TO STILL BE INTACT. DUE TO CHANGES IN DX1779'THE AREA, A COMPLETE NEW DESCRIPTION FOLLOWS. DX1779' DX1779'THE STATION IS LOCATED IN NE 1/4 SEC 29, T 5 S, R 6 W, ABOUT 19 DX1779'MILES EAST OF TUSTIN AND 11.5 MILES SOUTH OF CORONA. IT IS ON DX1779'THE HIGHEST PEAK OF SANTIAGO MOUNTAIN. IT IS ON PROPERTY OWNED DX1779'BY THE UNITED STATES FOREST SERVICE, 1440 EAST FIRST STREET, DX1779'ROOM 408, SANTA ANA, CALIFORNIA. PHONE 836 2567 DX1779' DX1779'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 55 DX1779'(NEWPORT FREEWAY) AND CHAPMAN AVENUE IN ORANGE, GO EAST ON CHAPMAN DX1779'AVENUE FOR 4.1 MILES TO A CROSSROAD. TURN RIGHT AND GO SOUTHEAST DX1779'ON SANTIAGO CANYON ROAD FOR 6.9 MILES TO A SIDE ROAD ON THE DX1779'LEFT. TURN LEFT AND GO EAST ON SILVERADO CANYON ROAD FOR 1 MILE DX1779'TO A UNITED STATES FOREST SERVICE OFFICE ON THE RIGHT. CONTINUE DX1779'EAST ON SILVERADO CANYON ROAD FOR 4.8 MILES TO A LOCKED GATE DX1779'AND THE END OF THE PAVED ROAD. PASS THROUGH THE GATE AND DX1779'CONTINUE EAST ON THE GRAVEL ROAD FOR 7.6 MILES TO A FORK. DX1779'TAKE THE LEFT FORK AND GO EAST FOR 0.05 MILE TO A SIDE ROAD ON DX1779'THE RIGHT. TURN RIGHT AND GO SOUTHEAST FOR 1.45 MILES TO THE DX1779'AZIMUTH MARK ON THE LEFT (APPROXIMATELY 0.1 MILE EAST NEAR A DX1779'SMALL BUILDING). CONTINUE ON THE MAIN ROAD EAST AND SOUTH FOR 3.4 DX1779'MILES TO THE TOP OF THE MOUNTAIN AND THE STATION. DX1779' DX1779'THE STATION MARK IS A COPPER BOLT CEMENTED IN A DRILL HOLE IN A DX1779'BOULDER. IT HAS NOW BEEN REINFORCED BY CONCRETE AND PROJECTS DX1779'ABOUT 18 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 36 FEET DX1779'EAST-SOUTHEAST OF THE CENTER OF A TRACK ROAD, 20 FEET DX1779'WEST-NORTHWEST OF THE CENTER OF A TRACK ROAD, AND 12.3 FEET DX1779'WEST-SOUTHWEST OF A FENCE AROUND THE LOOKOUT. IT IS ABOUT 15 DX1779'FEET HIGHER IN ELEVATION THAN THE TRACK ROAD. DX1779' DX1779'REFERENCE MARK 6 IS A STANDARD DISK STAMPED SANTIAGO NO 6 1899, DX1779'CEMENTED IN A DRILL HOLE IN A CONCRETE STEP AT THE NORTHWEST DX1779'CORNER OF THE LOOKOUT AND FLUSH WITH THE SURFACE OF THE STEP. IT DX1779'IS 15.4 NORTHEAST OF THE WEST GATE POST LEADING TO THE LOOKOUT, DX1779'AND 11.2 FEET WEST OF THE FENCE AROUND THE LOOKOUT. IT IS ABOUT DX1779'5 FEET LOWER IN ELEVATION THAN THE STATION. DX1779' DX1779'REFERENCE MARK 7 IS A STANDARD DISK STAMPED SANTIAGO NO 7 1899, DX1779'CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK WHICH PROJECTS DX1779'ABOUT 1 FOOT ABOVE THE SURFACE OF THE GROUND. IT IS 78 FEET DX1779'SOUTHWEST OF THE SOUTHWEST CORNER OF THE LOOKOUT AND 14 FEET WEST DX1779'OF THE CENTER OF THE TRACK ROAD. IT IS ABOUT 3 FEET LOWER IN DX1779'ELEVATION THAN THE STATION AND ABOUT 8 FEET HIGHER IN ELEVATION DX1779'THAN THE TRACK ROAD. NOTE 12C DX1779' DX1779'UNITED STATES FOREST SERVICE REFERENCE POINT 1 IS A BRASS TAB DX1779'WITH A SMALL NAIL HEAD IN THE CENTER AND CEMENTED IN THE TOP OF DX1779'A 2-INCH IRON PIPE WHICH PROJECTS ABOUT 10 INCHES ABOVE THE DX1779'SURFACE OF THE GROUND. THE BRASS TAB IS STAMPED USFS RP 1. IT DX1779'IS 32 FEET EAST OF THE CENTER OF THE TRACK ROAD AND 18 FEET WEST DX1779'OF THE CENTER OF A TRACK ROAD. IT IS ABOUT THE SAME ELEVATION DX1779'AS REFERENCE MARK 7. DX1779' DX1779'THE AZIMUTH MARK IS A STANDARD DISK STAMPED SANTIAGO 1956 1899, DX1779'CEMENTED IN A DRILL HOLE IN A BOULDER THAT IS ABOUT 2 FEET BY 2 DX1779'FEET AND PROJECTS ABOUT 1-1/2 FEET ABOVE THE SURFACE OF THE DX1779'GROUND. IT IS 123 FEET EAST OF THE SOUTHEAST CORNER OF A SMALL DX1779'BUILDING WHICH HAS FIVE ANTENNAS SURROUNDING IT, 16 FEET NORTH DX1779'OF THE CENTER OF THE TRACK ROAD, AND ABOUT 8 FEET HIGHER IN DX1779'ELEVATION THAN THE ROAD. NOTE 17C DX1779' DX1779'HEIGHT OF LIGHT ABOVE STATION MARK 4.8 FEET. DX1779' DX1779'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN DX1779'11.5 MILES SOUTH OF CORONA. DX1779 DX1779 STATION RECOVERY (1974) DX1779 DX1779'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 DX1779'RECOVERED IN GOOD CONDITION. DX1779 DX1779 STATION RECOVERY (1975) DX1779 DX1779'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (ILC) DX1779'NO MEASUREMENT BETWEEN REFERENCE MARKS DUE TO THE TERRAIN. DX1779' DX1779'THE STATION MARK, REFERENCE MARKS 6 AND 7 AND RP 1 (USFS) WERE DX1779'RECOVERED AND FOUND IN GOOD CONDITION. A LONGER MEASUREMENT OF DX1779'.009 METERS COMPARED TO 1956 DATA TO RM 7 WAS NOTED. DIFFERENCE DX1779'OF 0.003 METER LONGER TO OTHER TWO MARKS WERE NOTED COMPARED TO DX1779'1956 DATA. DX1779' DX1779'A DIRECTION AND EDM TO THE AZIMUTH MARK WAS NOT MADE DUE DX1779'OBSTRUCTION CAUSED BY NUMEROUS ANTENNAS SURROUNDING THE HILLTOP. DX1779' DX1779'SEE DESCRIPTION TO SANTIAGO 1899 FOR THE TO REACH. DX1779' DX1779'RM 8 1975 IS NOT THE SAME AS THE RM 8 WHICH WAS ESTABLISHED IN DX1779'1953. THAT RM 8 IS LOCATED ON THE ROOF OF THE NEARBY MICROWAVE DX1779'BUILDING. RM 8 1953 IS 17.031 M (55.88 FT) FROM SANTIAGO IN DX1779'AZIMUTH 195 DEG 33 MIN 37 SEC, 4.10 FT FROM N EDGE OF THE ROOF. DX1779' DX1779'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN DX1779'7 MILES EAST-SOUTHEAST OF SILVERADO. DX1779 DX1779 STATION RECOVERY (1986) DX1779 DX1779'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (MRM) DX1779'THE STATION WAS RECOVERED AT THIS DATE, DX1779'IN GOOD CONDITION. REFERENCE MARKS AND AZIMUTH MARK WERE NOT DX1779'SEARCHED FOR AT THIS DATE. DX1779' DX1779'THE STATION IS LOCATED ABOUT 30.6 KM (19 MI) DX1779'EAST OF TUSTIN, DX1779'18.5 KM (11.5 MI) SOUTH OF CORONA, DX1779'10.5 KM (6.5 MI) SOUTHEAST OF SILVERADO, IN CLEVELAND NATIONAL DX1779'FOREST, ON THE HIGHEST PEAK OF SANTIAGO MOUNTAIN. DX1779'OWNERSHIP--U.S. GOVERNMENT, U.S. FOREST SERVICE, FOR KEY TO LOCKED DX1779'GATE CONTACT CORONA RANGER STATION, 1147 E. 6TH STREET, CORONA CA, DX1779'PHONE 714-776-1811. DX1779' DX1779'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 55 DX1779'(NEWPORT FREEWAY) AND CHAPMAN AVENUE IN ORANGE, GO DX1779'EAST FOR 5.9 KM (3.65 MI) ON CHAPMAN AVENUE TO THE INTERSECTION OF DX1779'NEWPORT BOULEVARD. DX1779'CONTINUE STRAIGHT AHEAD AND GO EAST FOR 0.6 KM (0.35 MI) ON CHAPMAN DX1779'AVENUE TO THE JUNCTION OF SANTIAGO CANYON ROAD. TURN RIGHT AND GO DX1779'SOUTHEASTERLY FOR 11.1 KM (6.9 MI) ON SANTIAGO CANYON ROAD TO DX1779'SILVERADO ROAD ON THE LEFT. TURN LEFT AND GO EASTERLY FOR 9.2 KM DX1779'(5.7 MI) ON SILVERADO ROAD TO THE END OF PAVEMENT AND A LOCKED DX1779'GATE. PASS THROUGH GATE AND GO EAST FOR 12.2 KM (7.55 MI) ON A DX1779'WINDING GRAVEL ROAD TO A FORK. FOLLOW THE LEFT FORK AND GO 0.1 KM DX1779'(0.05 MI) TO A FORK. FOLLOW THE RIGHT FORK AND GO SOUTHWESTERLY DX1779'FOR 7.2 KM (4.5 MI) TO TWO LOCKED METAL GATES. PASS THROUGH THE DX1779'RIGHT GATE AND CONTINUE UPHILL FOR 0.2 KM (0.1 MI) TO A FORK. DX1779'FOLLOW THE LEFT FORK AND GO WESTERLY FOR 152 METERS (500 FT), THEN DX1779'BEAR LEFT AND GO UPHILL FOR 30 METERS (100 FT) ALONG THE FENCE DX1779'ENCLOSED MICROWAVE TOWER TO THE STATION ON THE LEFT, ABOUT 4.6 DX1779'METERS (15 FT) HIGHER THAN THE TRACK ROAD. DX1779' DX1779'THE STATION IS A COPPER BOLT DX1779'THAT IS ---UNSTAMPED---, DX1779'SET INTO THE TOP OF A BOULDER PROJECTING 31 CM ABOVE GROUND THAT HAS DX1779'BEEN REINFORCED WITH CONCRETE. LOCATED DX1779'10.97 METERS (36.0 FT) EAST-SOUTHEAST FROM THE APPROXIMATE CENTER OF DX1779'A TRACK ROAD, DX1779'6.10 METERS (20.0 FT) WEST-NORTHWEST FROM THE APPROXIMATE CENTER OF DX1779'A TRACK ROAD AND DX1779'3.66 METERS (12.0 FT) WEST-SOUTHWEST FROM THE FENCE AROUND MICROWAVE DX1779'AND LOOKOUT TOWER. NOTE, THE 1939 DESCRIPTION STATES THAT THE DX1779'UNDERGROUND MARK IS A STONE BOTTLE. DX1779' DX1779'SALTON TROUGH CRUSTAL-MOTION MONITORING, SOUTHERN CALIFORNIA, DX1779'MAY-JUNE 1986. DX1779' DX1779'THIS STATION SUITABLE FOR GPS SURVEYS. DX1779' DX1779'DESCRIBED BY D.L. SPRANGERS.