National Geodetic Survey, Retrieval Date = JANUARY 14, 2003 MX0993 *********************************************************************** MX0993 DESIGNATION - WHALEBACK MX0993 PID - MX0993 MX0993 STATE/COUNTY- CA/SISKIYOU MX0993 USGS QUAD - THE WHALEBACK (1986) MX0993 MX0993 *CURRENT SURVEY CONTROL MX0993 ___________________________________________________________________ MX0993* NAD 83(1992)- 41 31 41.68043(N) 122 08 26.27411(W) ADJUSTED MX0993* NAVD 88 - 2600.7 (meters) 8532. (feet) VERTCON MX0993 ___________________________________________________________________ MX0993 EPOCH DATE - 1991.35 MX0993 LAPLACE CORR- 5.51 (seconds) DEFLEC99 MX0993 GEOID HEIGHT- -23.31 (meters) GEOID99 MX0993 MX0993 HORZ ORDER - FIRST MX0993 MX0993.The horizontal coordinates were established by classical geodetic methods MX0993.and adjusted by the National Geodetic Survey in March 1994. MX0993.The horizontal coordinates are valid at the epoch date displayed above. MX0993.The epoch date for horizontal control is a decimal equivalence MX0993.of Year/Month/Day. MX0993 MX0993.The NAVD 88 height was computed by applying the VERTCON shift value to MX0993.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) MX0993 MX0993.The Laplace correction was computed from DEFLEC99 derived deflections. MX0993 MX0993.The geoid height was determined by GEOID99. MX0993 MX0993; North East Units Scale Converg. MX0993;SPC CA 1 - 743,733.933 1,988,263.279 MT 0.99996779 -0 05 31.0 MX0993;SPC CA 1 - 2,440,067.08 6,523,160.44 sFT 0.99996779 -0 05 31.0 MX0993;UTM 10 - 4,597,756.398 571,694.417 MT 0.99966325 +0 34 11.2 MX0993 MX0993: Primary Azimuth Mark Grid Az MX0993:SPC CA 1 - GOOSENEST 342 22 07.3 MX0993:UTM 10 - GOOSENEST 341 42 25.1 MX0993 MX0993|---------------------------------------------------------------------| MX0993| PID Reference Object Distance Geod. Az | MX0993| dddmmss.s | MX0993| CD9432 WHALEBACK RM 1 7.303 METERS 00856 | MX0993| CD9433 WHALEBACK RM 2 8.788 METERS 08615 | MX0993| LT0797 HOGBACK LOOKOUT HOUSE APPROX.72.6 KM 1702958.3 | MX0993| MX0994 GOOSENEST APPROX.22.3 KM 3421636.3 | MX0993|---------------------------------------------------------------------| MX0993 MX0993 SUPERSEDED SURVEY CONTROL MX0993 MX0993 NAD 83(1986)- 41 31 41.67922(N) 122 08 26.27888(W) AD(1984.00) 1 MX0993 NAD 27 - 41 31 42.12700(N) 122 08 22.24500(W) AD( ) 1 MX0993 NGVD 29 - 2599.4 (m) 8528. (f) VERT ANG MX0993 MX0993.Superseded values are not recommended for survey control. MX0993.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. MX0993.See file dsdata.txt to determine how the superseded data were derived. MX0993 MX0993_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TEL7169497756(NAD 83) MX0993_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION MX0993_SETTING: 66 = SET IN ROCK OUTCROP MX0993 MX0993 HISTORY - Date Condition Report By MX0993 HISTORY - 1920 MONUMENTED CGS MX0993 HISTORY - 1948 SEE DESCRIPTION CGS MX0993 HISTORY - 1981 GOOD LOCSUR MX0993 MX0993 STATION DESCRIPTION MX0993 MX0993'DESCRIBED BY COAST AND GEODETIC SURVEY 1920 (EWE) MX0993'ABOUT 15 MILES EAST OF WEED, ON HIGHEST POINT OF BLACK CRATER MX0993'MOUNTAIN, AND AT SOUTHEAST EDGE OF AN OLD CRATER. STATION IS MX0993'SURROUNDED BY A QUITE HEAVY GROWTH OF TIMBER. MARKED BY STANDARD MX0993'STATION DISK IN BEDROCK, NOTE 2. REFERENCE MARKS ARE STANDARD MX0993'REFERENCE DISKS IN BEDROCK, NOTE 12A. ONE IS 7.31 METERS (24.0 MX0993'FEET) FROM STATION IN AZIMUTH 188 DEG 59 MIN. AND OTHER IS MX0993'8.78 METERS (28.8 FEET) FROM STATION IN AZIMUTH 266 DEG 13 MIN. MX0993 MX0993 STATION RECOVERY (1948) MX0993 MX0993'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948 (WRH) MX0993'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND MX0993'IN GOOD CONDITION. A NEW DESCRIPTION FOLLOWS. MX0993' MX0993'THE STATION IS LOCATED ON WHALE BACK MOUNTAIN AND AT THE SOUTHEAST MX0993'EDGE OF AN OLD CRATER, ABOUT 19 MILES SOUTHWEST OF MT. HEBRON, ABOUT MX0993'14-1/2 MILES NORTHEAST OF WEED, AND 4-1/2 MILES SOUTHEAST OF MX0993'COUGAR. MX0993' MX0993'TO REACH, FROM THE CHEVRON STATION IN COUGAR, GO SOUTH, ON U.S. MX0993'HIGHWAY 97, FOR 0.3 MILE TO SIDE ROAD LEFT. TURN LEFT, (AS PER MX0993'SIGN DEER MOUNTAIN), AND GO NORTHEAST, ON OLD PAVED HIGHWAY 3.7 MX0993'MILES TO SIDE ROAD RIGHT AT TOP OF SUMMIT. TURN RIGHT, (AS PER MX0993'SIGN WHALE BACK GRADE), AND GO SOUTHEAST, ON DIRT ROAD 2.1 MILES MX0993'TO A SHARP RIGHT CURVE IN ROAD. THENCE PACK, ALONG TRAIL, AND MX0993'GO SOUTH, TO TOP OF RIDGE AND SADDLE. THENCE PACK, ALONG MX0993'RIDGE, AND GO SOUTHEAST TO HIGHEST POINT AND THE STATION SITE. MX0993' MX0993'THE STATION MARK IS A STANDARD DISK, STAMPED WHALE BACK 1920, MX0993'SET INTO A DRILL HOLE IN A BOULDER 20 INCHES IN DIAMETER WHICH MX0993'PROJECTS ABOUT 24 INCHES. MX0993' MX0993'REFERENCE MARK NUMBER 1 IS A STANDARD DISK, UNSTAMPED, SET INTO MX0993'A DRILL HOLE IN A BOULDER 3 FEET IN DIAMETER WHICH PROJECTS ABOUT MX0993'24 INCHES AND IS ABOUT 12 INCHES HIGHER THAN THE STATION. MX0993' MX0993'REFERENCE MARK NUMBER 2 IS A STANDARD DISK, UNSTAMPED, SET INTO MX0993'A DRILL HOLE IN OUTCROPPING BEDROCK WHICH PROJECTS ABOUT 8 MX0993'INCHES AND IS ABOUT 2 FEET LOWER THAN THE STATION. MX0993 MX0993 STATION RECOVERY (1981) MX0993 MX0993'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1981 MX0993'WHALEBACK 1920 RECOVERED GOOD.