National Geodetic Survey, Retrieval Date = DECEMBER 19, 2002 LT0484 *********************************************************************** LT0484 DESIGNATION - OBSERVATION LT0484 PID - LT0484 LT0484 STATE/COUNTY- CA/LASSEN LT0484 USGS QUAD - OBSERVATION PEAK (1989) LT0484 LT0484 *CURRENT SURVEY CONTROL LT0484 ___________________________________________________________________ LT0484* NAD 83(1992)- 40 46 27.29711(N) 120 10 17.65423(W) ADJUSTED LT0484* NAVD 88 - 2428.7 (meters) 7968. (feet) VERTCON LT0484 ___________________________________________________________________ LT0484 EPOCH DATE - 1991.35 LT0484 LAPLACE CORR- 1.11 (seconds) DEFLEC99 LT0484 GEOID HEIGHT- -22.40 (meters) GEOID99 LT0484 LT0484 HORZ ORDER - FIRST LT0484 LT0484.The horizontal coordinates were established by classical geodetic methods LT0484.and adjusted by the National Geodetic Survey in March 1994. LT0484.The horizontal coordinates are valid at the epoch date displayed above. LT0484.The epoch date for horizontal control is a decimal equivalence LT0484.of Year/Month/Day. LT0484 LT0484.The NAVD 88 height was computed by applying the VERTCON shift value to LT0484.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) LT0484 LT0484.The Laplace correction was computed from DEFLEC99 derived deflections. LT0484 LT0484.The geoid height was determined by GEOID99. LT0484 LT0484; North East Units Scale Converg. LT0484;SPC CA 1 - 661,605.385 2,154,331.548 MT 0.99989520 +1 11 44.1 LT0484;SPC CA 1 - 2,170,617.00 7,068,002.75 sFT 0.99989520 +1 11 44.1 LT0484;UTM 10 - 4,517,546.548 738,699.440 MT 1.00030136 +1 50 53.0 LT0484 LT0484: Primary Azimuth Mark Grid Az LT0484:SPC CA 1 - OBSERVATION AZ MK 188 54 49.8 LT0484:UTM 10 - OBSERVATION AZ MK 188 15 40.9 LT0484 LT0484|---------------------------------------------------------------------| LT0484| PID Reference Object Distance Geod. Az | LT0484| dddmmss.s | LT0484| MW0756 BUCK MTN HIGHEST POINT E END APPROX.41.6 KM 0051901.4 | LT0484| LT0483 OBSERVATION PEAK CAIRN 1931 3.200 METERS 07953 | LT0484| DB7433 OBSERVATION RM 1 23.050 METERS 10213 | LT0484| DB7434 OBSERVATION RM 2 5.534 METERS 17521 | LT0484| DB7432 OBSERVATION AZ MK 1900633.9 | LT0484| LT0510 SHAFFER PEAK HIGHEST POINT APPROX.39.7 KM 2032957.5 | LT0484| LT0486 SPANISH SPRINGS PEAK HIGH PART APPROX. 6.7 KM 2421908.1 | LT0484|---------------------------------------------------------------------| LT0484 LT0484 SUPERSEDED SURVEY CONTROL LT0484 LT0484 NAD 83(1986)- 40 46 27.30167(N) 120 10 17.66844(W) AD(1984.00) 1 LT0484 NAD 27 - 40 46 27.66700(N) 120 10 13.89200(W) AD( ) 1 LT0484 NGVD 29 - 2427.5 (m) 7964. (f) VERT ANG LT0484 LT0484.Superseded values are not recommended for survey control. LT0484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. LT0484.See file dsdata.txt to determine how the superseded data were derived. LT0484 LT0484_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TGL3869917547(NAD 83) LT0484_MARKER: DS = TRIANGULATION STATION DISK LT0484_SETTING: 66 = SET IN ROCK OUTCROP LT0484_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD LT0484+STABILITY: POSITION/ELEVATION WELL LT0484 LT0484 HISTORY - Date Condition Report By LT0484 HISTORY - 1931 MONUMENTED CGS LT0484 HISTORY - 1940 SEE DESCRIPTION CGS LT0484 HISTORY - 1953 SEE DESCRIPTION USGS LT0484 LT0484 STATION DESCRIPTION LT0484 LT0484'DESCRIBED BY COAST AND GEODETIC SURVEY 1931 (JB) LT0484'STATION IS ABOUT 35 MILES NE OF SUSANVILLE, 12 MILES ESE OF LT0484'RAVENDALE, AND ON HIGHEST PART OF HIGH, ROUNDED MOUNTAIN, LT0484'KNOWN AS OBSERVATION PEAK. LT0484' LT0484'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS IN LT0484'BEDROCK. LT0484' LT0484'REFERENCE MARK NO. 1 IS 23.10 METERS (75.8 FEET) FROM STATION LT0484'IN AZIMUTH 282 DEG 13 MIN. LT0484' LT0484'REFERENCE MARK NO. 2 IS 5.53 METERS (18.1 FEET) FROM STATION IN LT0484'AZIMUTH 355 DEG 21 MIN. LT0484' LT0484'OBSERVATION PEAK CAIRN IS 3.2 METERS (10 FEET) FROM STATION LT0484'IN AZIMUTH 259 DEG 53 MIN. LT0484' LT0484'AZIMUTH FROM STATION TO SPANISH SPRINGS PEAK, HIGHEST POINT LT0484'IS 62 DEG 19 MIN 10 SEC. LT0484' LT0484'TO REACH FROM SUSANVILLE, GO E 18 MILES TO LITCHFIELD, CONTINUE LT0484'E 3.7 MILES AND TAKE LEFT FORK, GO 27.4 MILES NORTHWARD ON LT0484'ALTURAS ROAD, TURN RIGHT ONTO SIDE ORAD LEADING UP CANYON LT0484'BETWEEN SPANISH SPRINGS PEAK AND SHINNS PEAK, AND FOLLOW LT0484'CANYON ROAD 7.6 MILES TO SMALL RANCH HOUSE, GO 0.3 MILE AND LT0484'TAKE LEFT FORK, GO 0.6 MILE TO TWO HOUSES, AND CLIMB 2 MILES LT0484'VIA ROCK SLIDE IN CENTER OF MOUNTAIN TO STATION SITE. LT0484 LT0484 STATION RECOVERY (1940) LT0484 LT0484'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (JCS) LT0484'STATION FOUND AS DESCRIBED, WITH THE EXCEPTION THAT THE ROCK LT0484'CAIRN IS RAZED, AND AZIMUTH MARK WAS SET AT THE END OF TRUCK LT0484'TRAVEL AND IS STAMPED OBSERVATION 1940. ALL MARKS RECOVERED LT0484'AND FOUND IN GOOD CONDITION. LT0484' LT0484'AZIMUTH MARK IS A STANDARD BRONZE DISK WEDGED IN A DRILL HOLE LT0484'IN A BOULDER, AND IS 50 FEET E OF THE HOUSE AT THE END OF LT0484'TRUCK-TRAVEL. LT0484' LT0484'REACHED FROM LITCHFIELD BY GOING N ON U.S. HIGHWAY 395 FOR LT0484'27.4 MILES FROM THE RAILROAD CROSSING TO A DIRT ROAD LEADING LT0484'RIGHT. THIS POINT IS 9.3 MILES S OF RAVENDALE ON U.S. HIGHWAY LT0484'395. THERE IS NO SIGN AT THIS ROAD. RANCH BUILDINGS CAN BE LT0484'SEEN 1/2 MILE E OF HIGHWAY. TURN RIGHT ON DIRT ROAD AND GO LT0484'0.25 MILE, TAKE LEFT FORK, GO 4.6 MILES, TAKE RIGHT FORK, LT0484'GO 1.55 MILES, PASS THROUGH WIRE GATE, GO 0.45 MILE TO LT0484'ABANDONED RANCH BUILDINGS. CONTINUE EASTERLY 0.6 MILE AND PASS LT0484'THROUGH WIRE GATE, CONTINUE 0.1 MILE, TAKE LEFT FORK, GO 0.2 LT0484'MILE TO THE END OF TRUCK TRAVEL AT RANCH BUILDINGS W OF LT0484'WATER HOLE. STATION IS ON HIGH PEAK TO THE N. PACK NW TO LT0484'THE SLIDE ROCK, THENCE UP THE STEEP SLOPE TO THE TOP AND LT0484'STATION. (A 4-HOUR PACK HORSES CAN BE TAKEN TO THE TOP.) LT0484 LT0484 STATION RECOVERY (1953) LT0484 LT0484'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953 LT0484'TO REACH FROM POST OFFICE IN LITCHFIELD GO E AND N ON U.S. LT0484'395 25.1 MILES TO DEEP FILL IN NEW ROAD. TURN RIGHT ONTO LT0484'SIDE ROAD (ABANDONED PAVED ROAD) AND GO 1.0 MILE TO ROAD JUNCTION. LT0484'TURN RIGHT ONTO DIRT ROAD AND GO 0.3 MILE TO MEADOW. KEEP LT0484'LEFT AND FOLLOW MAIN TRAVELED ROAD 7.3 MILES TO AN ABANDONED LT0484'FARM HOUSE AND LEAVE TRUCK HERE. STATION CAN BE SEEN TO THE LT0484'NNE OF HERE. PACK TOWARD IT AND CLIMB UP LARGE ROCK SLIDE LT0484'ON SW SIDE OF MOUNTAIN TO HIGHEST POINT AND STATION. ABOUT LT0484'A 2.5 HOUR CLIMB.