1 National Geodetic Survey, Retrieval Date = OCTOBER 3, 2005 JS4673 *********************************************************************** JS4673 FBN - This is a Federal Base Network Control Station. JS4673 DESIGNATION - HPGN CA 10 12 JS4673 PID - JS4673 JS4673 STATE/COUNTY- CA/AMADOR JS4673 USGS QUAD - TRAGEDY SPRING (1992) JS4673 JS4673 *CURRENT SURVEY CONTROL JS4673 ___________________________________________________________________ JS4673* NAD 83(1998)- 38 38 00.19068(N) 120 10 36.07725(W) ADJUSTED JS4673* NAVD 88 - 2340.9 (meters) 7680. (feet) GPS OBS JS4673 ___________________________________________________________________ JS4673 EPOCH DATE - 2004.69 JS4673 X - -2,508,640.386 (meters) COMP JS4673 Y - -4,314,312.439 (meters) COMP JS4673 Z - 3,962,053.014 (meters) COMP JS4673 LAPLACE CORR- 9.56 (seconds) DEFLEC99 JS4673 ELLIP HEIGHT- 2316.71 (meters) (09/13/05) GPS OBS JS4673 GEOID HEIGHT- -24.16 (meters) GEOID03 JS4673 JS4673 HORZ ORDER - A JS4673 ELLP ORDER - FOURTH CLASS I JS4673 JS4673.ITRF positions are available for this station. JS4673.The horizontal coordinates were established by GPS observations JS4673.and adjusted by the National Geodetic Survey in September 2005. JS4673.This is a SPECIAL STATUS position. See SPECIAL STATUS under the JS4673.DATUM ITEM on the data sheet items page. JS4673.The horizontal coordinates are valid at the epoch date displayed above. JS4673.The epoch date for horizontal control is a decimal equivalence JS4673.of Year/Month/Day. JS4673 JS4673.The orthometric height was determined by GPS observations and a JS4673.high-resolution geoid model. JS4673 JS4673.The X, Y, and Z were computed from the position and the ellipsoidal ht. JS4673 JS4673.The Laplace correction was computed from DEFLEC99 derived deflections. JS4673 JS4673.The ellipsoidal height was determined by GPS observations JS4673.and is referenced to NAD 83. JS4673 JS4673.The geoid height was determined by GEOID03. JS4673 JS4673; North East Units Scale Factor Converg. JS4673;SPC CA 2 - 608,903.947 2,158,739.481 MT 0.99994550 +1 08 58.3 JS4673;SPC CA 2 - 1,997,712.37 7,082,464.45 sFT 0.99994550 +1 08 58.3 JS4673;SPC CA 3 - 736,827.644 2,028,152.588 MT 1.00004774 +0 11 52.6 JS4673;SPC CA 3 - 2,417,408.70 6,654,030.62 sFT 1.00004774 +0 11 52.6 JS4673;UTM 10 - 4,279,876.348 745,754.248 MT 1.00034380 +1 45 48.9 JS4673 JS4673! - Elev Factor x Scale Factor = Combined Factor JS4673!SPC CA 2 - 0.99963663 x 0.99994550 = 0.99958215 JS4673!SPC CA 3 - 0.99963663 x 1.00004774 = 0.99968436 JS4673!UTM 10 - 0.99963663 x 1.00034380 = 0.99998031 JS4673 JS4673 SUPERSEDED SURVEY CONTROL JS4673 JS4673 NAD 83(1998)- 38 38 00.18843(N) 120 10 36.07489(W) AD(1998.50) A JS4673 ELLIP H (04/06/00) 2316.71 (m) GP(1998.50) 3 1 JS4673 NAD 83(1986)- 38 38 00.17128(N) 120 10 36.05682(W) AD(1984.00) 1 JS4673 NAD 83(1992)- 38 38 00.18625(N) 120 10 36.07146(W) AD(1991.35) B JS4673 ELLIP H (05/15/92) 2316.67 (m) GP(1991.35) 4 2 JS4673 NGVD 29 (07/08/94) 2339.9 (m) 7677. (f) GPS OBS JS4673 JS4673.Superseded values are not recommended for survey control. JS4673.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JS4673.See file dsdata.txt to determine how the superseded data were derived. JS4673 JS4673_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SGH4575479876(NAD 83) JS4673_MARKER: DD = SURVEY DISK JS4673_SETTING: 66 = SET IN ROCK OUTCROP JS4673_SP_SET: IN A DRILL HOLE IN BEDROCK JS4673_STAMPING: HPGN CALIF STA. 10-12 1991 JS4673_MARK LOGO: CADT JS4673_PROJECTION: FLUSH JS4673_MAGNETIC: N = NO MAGNETIC MATERIAL JS4673_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD JS4673+STABILITY: POSITION/ELEVATION WELL JS4673_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR JS4673+SATELLITE: SATELLITE OBSERVATIONS - August 26, 2003 JS4673 JS4673 HISTORY - Date Condition Report By JS4673 HISTORY - 1991 MONUMENTED CADT JS4673 HISTORY - 19910528 GOOD NGS JS4673 HISTORY - 19920622 GOOD NOS JS4673 HISTORY - 19960919 GOOD CADT JS4673 HISTORY - 19980715 GOOD NGS JS4673 HISTORY - 19990507 GOOD NGS JS4673 HISTORY - 20030826 GOOD CADT JS4673 JS4673 STATION DESCRIPTION JS4673 JS4673'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991 JS4673'THE STATION IS LOCATED ABOUT 20 MI (32.2 KM) SOUTHWEST OF SOUTH LAKE JS4673'TAHOE AND 5 MI (8.0 KM) SOUTHWEST OF THE DAM AT SILVER LAKE. JS4673'TO REACH THE STATION FROM THE DAM AT SILVER LAKE, GO SOUTHWESTERLY FOR JS4673'4.3 MI (6.9 KM) ON STATE HIGHWAY 88 TO DEVILS GARDEN VISTA POINT. JS4673'CONTINUE FOR 0.35 MI (0.56 KM) ON HIGHWAY 88 TO A ROAD CONNECTION JS4673'AND THE STATION ON THE RIGHT. THE ROAD CONNECTION LOOPS BACK JS4673'APPROXIMATELY PARALLEL TO HIGHWAY 88 TO THE EAST. JS4673'THE STATION IS A 3.5 IN DIAMETER CADT BRASS DISK SET AT THE WESTERLY JS4673'END OF A BEDROCK OUTCROPPING ABOUT 1 X 2 FOOT AND ABOUT 0.5 FT JS4673'(0.2 M) ABOVE GROUND. LOCATED 57.8 FT (17.6 M) NORTH OF THE JS4673'CENTERLINE STRIPE OF HIGHWAY 88, 50.2 FT (15.3 M) EAST OF THE ROAD JS4673'CONNECTION EDGE OF PAVEMENT NEAR THE MIDPOINT OF THE CURVE, 33.0 FT JS4673'(10.1 M) SOUTH OF THE ROAD CONNECTION EDGE OF PAVEMENT AT THE JS4673'TANGENT PORTION GOING EAST AND 3.2 FT (1.0 M) SOUTHWEST OF A JS4673'FIBERGLASS WITNESS POST. JS4673 JS4673 STATION RECOVERY (1992) JS4673 JS4673'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992 JS4673'RECOVERED IN GOOD CONDITION. JS4673 JS4673 STATION RECOVERY (1996) JS4673 JS4673'RECOVERY NOTE BY CALTRANS 1996 (PTD) JS4673'THE STATION WAS RECOVERED WITH THE FOLLOWING ADDITION. THE STATION IS JS4673'LOCATED ON THE NORTH SIDE OF STATE HIGHWAY 88, 2.1 MI (3.4 KM) EAST OF JS4673'THE INTERSECTION OF HIGHWAY 88 AND MORMON EMIGRANT TRAIL (IRON JS4673'MOUNTAIN ROAD) . JS4673 JS4673 STATION RECOVERY (1998) JS4673 JS4673'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (CSM) JS4673'THE STATION IS LOCATED ABOUT 20 MI (32.2 KM) SOUTHWEST OF SOUTH LAKE JS4673'TAHOE, 5 MI (8.0 KM) SOUTHWEST OF THE DAM AT SILVER LAKE AND 9.5 MI JS4673'(15.3 KM) EAST OF THE ENTRANCE TO THE BEAR RIVER RESERVOIR. TO REACH JS4673'THE STATION FROM THE DAM AT SILVER LAKE, GO SOUTHWESTERLY FOR 4.3 MI JS4673'(6.9 KM) ON STATE HIGHWAY 88 TO DEVILS GARDEN VISTA POINT. CONTINUE JS4673'FOR 0.35 MI (0.56 KM) ON HIGHWAY 88 TO A ROAD CONNECTION AND THE JS4673'STATION ON THE RIGHT. THE ROAD CONNECTION LOOPS BACK APPROXIMATELY JS4673'PARALLEL TO HIGHWAY 88 TO THE EAST. THE STATION IS A 3.5 IN DIAMETER JS4673'CADT BRASS DISK SET AT THE WESTERLY END OF A BEDROCK OUTCROPPING ABOUT JS4673'1 FT (0.3 M) X 2 FT (0.6 M) AND ABOUT 0.5 FT (15.2 CM) ABOVE GROUND. JS4673'LOCATED 57.8 FT (17.6 M) NORTH OF THE CENTERLINE STRIPE OF HIGHWAY 88, JS4673'50.2 FT (15.3 M) EAST OF THE ROAD CONNECTION EDGE OF PAVEMENT NEAR THE JS4673'MIDPOINT OF THE CURVE, 33.0 FT (10.1 M) SOUTH OF THE ROAD CONNECTION JS4673'EDGE OF PAVEMENT AT THE TANGENT PORTION GOING EAST, 34.8 FT (10.6 M) JS4673'NORTH-NORTHEAST OF THE CENTER OF A 3 FT (0.9 M) BY 5 FT (1.5 M) METAL JS4673'UNDERGROUND CABLE JUNCTION BOX AND 33.1 FT (10.1 M) NORTH-NORTHEAST OF JS4673'A FIBERGLASS WITNESS POST. JS4673 JS4673 STATION RECOVERY (1999) JS4673 JS4673'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (CSM) JS4673'RECOVERED AS DESCRIBED. JS4673 JS4673 STATION RECOVERY (2003) JS4673 JS4673'RECOVERY NOTE BY CALTRANS 2003 (RLM) JS4673'THE STATION WAS RECOVERED AS DESCRIBED. THIS STATION WAS OCCUPIED AS JS4673'PART OF A CALTRANS NORTH REGION OFFICE OF SURVEYORS GPS HEIGHT JS4673'MODERNIZATION PROJECT. 1 National Geodetic Survey, Retrieval Date = OCTOBER 3, 2005 AC9222 *********************************************************************** AC9222 DESIGNATION - M 1 USGS RESET AC9222 PID - AC9222 AC9222 STATE/COUNTY- CA/AMADOR AC9222 USGS QUAD - IRISH HILL (1962) AC9222 AC9222 *CURRENT SURVEY CONTROL AC9222 ___________________________________________________________________ AC9222* NAD 83(1998)- 38 22 42.83615(N) 120 59 05.91004(W) ADJUSTED AC9222* NAVD 88 - 89.83 (meters) 294.7 (feet) LEVELING AC9222 ___________________________________________________________________ AC9222 EPOCH DATE - 2004.69 AC9222 X - -2,577,410.936 (meters) COMP AC9222 Y - -4,292,081.234 (meters) COMP AC9222 Z - 3,938,508.408 (meters) COMP AC9222 LAPLACE CORR- 4.11 (seconds) DEFLEC99 AC9222 ELLIP HEIGHT- 60.08 (meters) (09/13/05) GPS OBS AC9222 GEOID HEIGHT- -29.69 (meters) GEOID03 AC9222 AC9222 HORZ ORDER - A AC9222 VERT ORDER - THIRD ? AC9222 ELLP ORDER - FOURTH CLASS I AC9222 AC9222.The horizontal coordinates were established by GPS observations AC9222.and adjusted by the National Geodetic Survey in September 2005. AC9222.This is a SPECIAL STATUS position. See SPECIAL STATUS under the AC9222.DATUM ITEM on the data sheet items page. AC9222.The horizontal coordinates are valid at the epoch date displayed above. AC9222.The epoch date for horizontal control is a decimal equivalence AC9222.of Year/Month/Day. AC9222 AC9222.The orthometric height was determined by differential leveling. AC9222.The vertical network tie was performed by a horz. field party for horz. AC9222.obs reductions. Reset procedures were used to establish the elevation. AC9222 AC9222.The X, Y, and Z were computed from the position and the ellipsoidal ht. AC9222 AC9222.The Laplace correction was computed from DEFLEC99 derived deflections. AC9222 AC9222.The ellipsoidal height was determined by GPS observations AC9222.and is referenced to NAD 83. AC9222 AC9222.The geoid height was determined by GEOID03. AC9222 AC9222; North East Units Scale Factor Converg. AC9222;SPC CA 2 - 579,521.083 2,088,689.171 MT 0.99999005 +0 38 23.8 AC9222;SPC CA 2 - 1,901,312.09 6,852,641.06 sFT 0.99999005 +0 38 23.8 AC9222;UTM 10 - 4,249,741.014 676,008.895 MT 0.99998153 +1 15 04.9 AC9222 AC9222! - Elev Factor x Scale Factor = Combined Factor AC9222!SPC CA 2 - 0.99999057 x 0.99999005 = 0.99998062 AC9222!UTM 10 - 0.99999057 x 0.99998153 = 0.99997210 AC9222 AC9222 SUPERSEDED SURVEY CONTROL AC9222 AC9222 NAD 83(1992)- 38 22 42.83226(N) 120 59 05.90323(W) AD(1991.35) 1 AC9222 ELLIP H (06/13/97) 60.14 (m) GP(1991.35) 4 2 AC9222 AC9222.Superseded values are not recommended for survey control. AC9222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. AC9222.See file dsdata.txt to determine how the superseded data were derived. AC9222 AC9222_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SFH7600949741(NAD 83) AC9222_MARKER: DD = SURVEY DISK AC9222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT AC9222_STAMPING: M1 1923 RESET 1970 AC9222_MARK LOGO: USGS AC9222_MAGNETIC: N = NO MAGNETIC MATERIAL AC9222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO AC9222+STABILITY: SURFACE MOTION AC9222_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR AC9222+SATELLITE: SATELLITE OBSERVATIONS - August 27, 2003 AC9222 AC9222 HISTORY - Date Condition Report By AC9222 HISTORY - 1970 MONUMENTED CADH AC9222 HISTORY - 19920610 GOOD CADT AC9222 HISTORY - 19940120 GOOD CADT AC9222 HISTORY - 20030827 GOOD CADT AC9222 AC9222 STATION DESCRIPTION AC9222 AC9222'DESCRIBED BY CALTRANS 1992 (PDG) AC9222'TEXT SUPERSEDED BY LATER RECOVERY. AC9222 AC9222 STATION RECOVERY (1994) AC9222 AC9222'RECOVERY NOTE BY CALTRANS 1994 (JCB) AC9222'THE STATION IS LOCATED AT THE INTERSECTION OF STATE HIGHWAY 104 AND AC9222'IONE-MICHIGAN BAR ROAD, ABOUT 31 MI (49.9 KM) SOUTHEAST OF SACRAMENTO, AC9222'12 MI (19.3 KM) WEST-NORTHWEST OF JACKSON AND 4 MI (6.4 KM) NORTHWEST AC9222'OF IONE. TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 16 AC9222'AND 49, ABOUT 10 MI (16.1 KM) NORTHWEST OF JACKSON, GO WEST ON HIGHWAY AC9222'16 FOR 0.3 MI (0.5 KM) TO A SIDE ROAD LEFT, STATE HIGHWAY 124. TURN AC9222'LEFT AND GO SOUTH ON HIGHWAY 124 FOR 8.0 MI (12.9 KM) TO A AC9222'T-INTERSECTION WITH STATE HIGHWAY 104. TURN RIGHT AND GO NORTHWEST ON AC9222'HIGHWAY 104 FOR 3.3 MI (5.3 KM) TO THE Y-INTERSECTION WITH AC9222'NORTHWEST-BOUND IONE-MICHIGAN BAR ROAD ON THE RIGHT AND THE STATION ON AC9222'THE LEFT. THE STATION IS 0.1 MI (0.2 KM) SOUTHEAST OF THE AC9222'T-INTERSECTION OF HIGHWAY 104 AND SOUTHEAST-BOUND IONE-MICHIGAN BAR AC9222'ROAD. THE STATION IS A USGS BENCH MARK DISK SET IN A CONCRETE POST AC9222'FLUSH WITH THE GROUND, 70 FT (21.3 M) (MEASURED ALONG THE CENTERLINE AC9222'OF HIGHWAY 104) SOUTHEAST OF THE POINT WHERE THE SOUTHWEST EDGE OF AC9222'PAVEMENT OF NORTHWEST-BOUND IONE-MICHIGAN BAR ROAD JOINS THE NORTH AC9222'EDGE OF PAVEMENT OF HIGHWAY 104, 30.3 FT (9.2 M) NORTHEAST OF A BARBED AC9222'WIRE AND WIRE MESH R/W FENCE, 29.6 FT (9.0 M) SOUTHWEST OF THE AC9222'CENTERLINE OF HIGHWAY 104, 1.3 FT (0.4 M) WEST OF A METAL WITNESS POST AC9222'AND LEVEL WITH HIGHWAY 104. THIS STATION WAS OCCUPIED AS PART OF A AC9222'CALIFORNIA HPGN DENSIFICATION SURVEY. AC9222 AC9222 STATION RECOVERY (2003) AC9222 AC9222'RECOVERY NOTE BY CALTRANS 2003 (DWM) AC9222'THE STATION WAS RECOVERED AS DESCRIBED. THIS STATION WAS OCCUPIED AS AC9222'PART OF A CALTRANS NORTH REGION OFFICE OF SURVEYORS GPS HEIGHT AC9222'MODERNIZATION PROJECT.