AU2257 ***********************************************************************
AU2257  DESIGNATION -  JPW 70 B
AU2257  PID         -  AU2257
AU2257  STATE/COUNTY-  LA/JEFFERSON
AU2257  USGS QUAD   -  NEW ORLEANS EAST (1992)
AU2257
AU2257                         *CURRENT SURVEY CONTROL
AU2257  ___________________________________________________________________
AU2257* NAD 83(1992)-  29 53 52.23196(N)    090 02 37.02572(W)     ADJUSTED
AU2257* NAVD 88     -         1.151  (meters)       3.78   (feet)  READJUSTED
AU2257  ___________________________________________________________________
AU2257  X           -      -4,212.850 (meters)                     COMP
AU2257  Y           -  -5,533,886.888 (meters)                     COMP
AU2257  Z           -   3,160,549.109 (meters)                     COMP
AU2257  LAPLACE CORR-          -0.05  (seconds)                    DEFLEC99
AU2257  ELLIP HEIGHT-         -24.89  (meters)                     GPS OBS
AU2257  GEOID HEIGHT-         -26.02  (meters)                     GEOID99
AU2257  DYNAMIC HT  -           1.150 (meters)       3.77  (feet)  COMP
AU2257  MODELED GRAV-     979,310.1   (mgal)                       NAVD 88
AU2257
AU2257  HORZ ORDER  -  FIRST
AU2257  VERT ORDER  -  * READJUSTED, Code A , SEE BELOW
AU2257  ELLP ORDER  -  FOURTH    CLASS II
AU2257
AU2257.The horizontal coordinates were established by GPS observations
AU2257.and adjusted by the National Geodetic Survey in January 1993.
AU2257
AU2257.The orthometric height was determined by differential leveling
AU2257.and adjusted by the National Geodetic Survey in February 1994.
AU2257.* This is a READJUSTED BENCH MARK height.  Code A indicates a
AU2257.distribution rate of 0.0 thru 1.0 mm/km.
AU2257.The height was derived from older observations constrained to new
AU2257.heights in a crustal motion area.  The height is approximate in
AU2257.relation to other heights in its vicinity.
AU2257
AU2257.The X, Y, and Z were computed from the position and the ellipsoidal ht.
AU2257
AU2257.The Laplace correction was computed from DEFLEC99 derived deflections.
AU2257
AU2257.The ellipsoidal height was determined by GPS observations
AU2257.and is referenced to NAD 83.
AU2257
AU2257.The geoid height was determined by GEOID99.
AU2257
AU2257.The dynamic height is computed by dividing the NAVD 88
AU2257.geopotential number by the normal gravity value computed on the
AU2257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
AU2257.degrees latitude (G = 980.6199 gals.).
AU2257
AU2257.The modeled gravity was interpolated from observed gravity values.
AU2257
AU2257;                    North         East     Units   Scale      Converg.
AU2257;SPC LA S     -   155,643.849 1,124,555.388   MT  0.99992735 +0 38 41.5
AU2257;UTM  15      - 3,311,138.959   785,491.962   MT  1.00060574 +1 28 28.6
AU2257;UTM  16      - 3,311,359.131   206,079.823   MT  1.00066601 -1 31 05.5
AU2257
AU2257                          SUPERSEDED SURVEY CONTROL
AU2257
AU2257  NAD 83(1986)-  29 53 52.24861(N)    090 02 37.02453(W) AD(       ) 1
AU2257  NAD 27      -  29 53 51.50791(N)    090 02 36.77007(W) AD(       ) 1
AU2257  NGVD 29     -         1.3    (m)            4.     (f) GPS OBS
AU2257
AU2257.Superseded values are not recommended for survey control.
AU2257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AU2257.See file dsdata.txt to determine how the superseded data were derived.
AU2257
AU2257_MARKER: DB = BENCH MARK DISK
AU2257_SETTING: 38 = ABUTMENT
AU2257_STAMPING: JPW 70 B
AU2257_MAGNETIC: N = NO MAGNETIC MATERIAL
AU2257_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
AU2257_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
AU2257+SATELLITE: SATELLITE OBSERVATIONS - November 28, 1994
AU2257
AU2257  HISTORY     - Date     Condition        Recov. By
AU2257  HISTORY     - 1986     MONUMENTED       LADTD
AU2257  HISTORY     - 1986     GOOD             LA-051
AU2257  HISTORY     - 19870625 GOOD
AU2257  HISTORY     - 19870630 GOOD
AU2257  HISTORY     - 19941128 GOOD             NGS
AU2257
AU2257                          STATION DESCRIPTION
AU2257
AU2257''DESCRIBED BY LA TRANSP AND DEV 1986 (UNK)
AU2257''THE STATION IS LOCATED AT THE EAST BOUNDRY OF GRETNA, AT THE
AU2257''JUNCTION OF STATE HIGHWAY 23 AND VERRET CANAL IN THE BRIDGE
AU2257''ABUTMENT ONER THE CANAL.
AU2257''OWNERSHIP--LOUISIANA DEPARTMENT OF TRANSPORTATION AND DEVELOPMENT.
AU2257''
AU2257''TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 90 BUSINESS
AU2257''AND STATE HIGHWAY 23 IN GRETNA, GO SOUTHEAST FOR
AU2257''1.79 KM (1.1 MI) ON HIGHWAY 23 TO THE SOUTHEAST END OF THE BRIDGE
AU2257''OVER THE VERRET CANAL AND THE STATION ON THE RIGHT IN THE BRIDGE
AU2257''ABUTMENT.
AU2257''
AU2257''THE STATION IS A STANDARD JEFFERSON PARISH DISK STAMPED---JPW 70 B---
AU2257''SET IN A DRILL HOLE IN THE BRIDGE ABUTMENT.
AU2257''2.0 METERS (0.7 FT) NORTHWEST FROM THE SOUTHEAST END OF THE
AU2257''BANNISTER OF THE BRIDGE.
AU2257
AU2257                          STATION RECOVERY (1986)
AU2257
AU2257''RECOVERY NOTE BY JEFFERSON PARISH LOUISIANA 1986
AU2257''IN GRETNA.
AU2257''THE STATION IS LOCATED ABOUT 3.2 KM (2.0 MI) NORTHWEST OF THE CITY
AU2257''HALL IN GRETNA, OWNERSHIP--THE BRIDGE ACROSS VERRET CANAL, TO REACH
AU2257''THE STATION FROM THE JUNCTION OF THE FRONTAGE ROAD OF THE WEST BANK
AU2257''EXPRESSWAY AND BELLE CHASSE HWY (LA HWY 23), GO SOUTHEAST FOR 1.52 KM
AU2257''(0.95 MI) ON THE SAID HWY TO THE MARK SET ON TOP OF THE SOUTHWEST
AU2257''BRIDGE ABUTTMENT OF THE BRIDGE ACROSS VERRET CANAL.  THE STATION IS A
AU2257''STANDARD JPDPU DISK STAMPED JPW-70-B, SET INTO THE BRIDGE ABUTTMENT,
AU2257''0.5 METERS (1.64 FT) EAST FROM THE BRIDGE FENCE.  THE STATION WAS
AU2257''USED TO OBSERVE GRAVITY BY THE UNIVERSITY OF NEW ORLEANS IN SPRING OF
AU2257''1986.
AU2257
AU2257                          STATION RECOVERY (1987)
AU2257
AU2257''RECOVERED 1987
AU2257''RECOVERED IN GOOD CONDITION.
AU2257
AU2257                          STATION RECOVERY (1987)
AU2257
AU2257''RECOVERED 1987
AU2257''RECOVERED IN GOOD CONDITION.
AU2257
AU2257                          STATION RECOVERY (1994)
AU2257
AU2257''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (GAS)
AU2257''IN TERRYTOWN, AT THE INTERSECTION OF BELLE CHASE HIGHWAY AND WHITNEY
AU2257''AVENUE, IN TOP OF AND 0.5 M (1.6 FT) NORTH OF THE SOUTH END OF THE
AU2257''SOUTHEAST CONCRETE ABUTMENT OF THE HIGHWAY BRIDGE SPANNING VERRET
AU2257''CANAL, 7.2 M (23.6 FT) WEST OF THE EXTENDED CENTERLINE OF THE AVENUE,
AU2257''4.5 M (14.8 FT) SOUTHWEST OF THE CENTERLINE OF THE SOUTHEAST BOUND
AU2257''LANES OF THE HIGHWAY, AND 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE
AU2257''HIGHWAY.