National Geodetic Survey, Retrieval Date = APRIL 25, 2000 DB1680 *********************************************************************** DB1680 DESIGNATION - LECH DB1680 PID - DB1680 DB1680 STATE/COUNTY- AZ/YUMA DB1680 USGS QUAD - CIPRIANO PASS DB1680 DB1680 *CURRENT SURVEY CONTROL DB1680 ___________________________________________________________________ DB1680* NAD 83(1992)- 32 22 34.76539(N) 114 12 25.93366(W) ADJUSTED DB1680* NAVD 88 - 357.0 (meters) 1171. (feet) VERTCON DB1680 ___________________________________________________________________ DB1680 LAPLACE CORR- 3.39 (seconds) DEFLEC99 DB1680 GEOID HEIGHT- -33.70 (meters) GEOID99 DB1680 DB1680 HORZ ORDER - THIRD DB1680 DB1680.The horizontal coordinates were established by classical geodetic methods DB1680.and adjusted by the National Geodetic Survey in August 1993. DB1680 DB1680.The NAVD 88 height was computed by applying the VERTCON shift value to DB1680.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DB1680 DB1680.The Laplace correction was computed from DEFLEC99 derived deflections. DB1680 DB1680.The geoid height was determined by GEOID99. DB1680 DB1680; North East Units Scale Converg. DB1680;SPC AZ W - 152,690.433 170,337.437 MT 0.99995615 -0 14 41.4 DB1680;UTM 11 - 3,585,580.350 762,756.114 MT 1.00045147 +1 29 46.8 DB1680 DB1680 SUPERSEDED SURVEY CONTROL DB1680 DB1680 NAD 83(1986)- 32 22 34.77157(N) 114 12 25.94663(W) AD( ) 3 DB1680 NGVD 29 - 356.3 (m) 1169. (f) VERT ANG DB1680 DB1680.Superseded values are not recommended for survey control. DB1680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DB1680.See file dsdata.txt to determine how the superseded data were derived. DB1680 DB1680_MARKER: DD = SURVEY DISK DB1680_SETTING: 66 = SET IN ROCK OUTCROP DB1680_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD DB1680+STABILITY: POSITION/ELEVATION WELL DB1680 DB1680 HISTORY - Date Condition Recov. By DB1680 HISTORY - 1964 MONUMENTED USGS DB1680 DB1680 STATION DESCRIPTION DB1680 DB1680'DESCRIBED BY US GEOLOGICAL SURVEY 1964 DB1680'LOCATED ABOUT 20 MI S. OF WELLTON, 6 MI SW. OF RAVEN BUTTE, 4.6 DB1680'MI N. OF THE MEXICAN BOUNDARY LINE. ON MOST EASTERLY, ROCKY TOP DB1680'OF SMALL GROUP OF ROCKY TOPS THAT FALL IN A GENERAL N.-S. LINE. DB1680'THE TOP IS SLIGHTLY HIGHER THAN ANY OF THE SURROUNDING TOPS. DB1680' DB1680'REACHED BY HELICOPTER. DB1680' DB1680'STATION MARK--STANDARD TABLET STAMPED---LECH 1964---, IN CONCRETE DB1680'IN GRANITE TOP. DB1680' DB1680'RM 1--STANDARD RM TABLET STAMPED---NO 1 1964---, IN CONCRETE IN DB1680'GRANITE OUTCROP, 8.83 FT FROM AND 1.2 FT LOWER THAN STATION MARK. DB1680' DB1680'RM 2--STANDARD RM TABLET STAMPED---NO 2 1964---, IN CONCRETE IN DB1680'GRANITE OUTCROP, 11.21 FT FROM AND 2.5 FT LOWER THAN STATION DB1680'MARK.