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Details for Benchmark: CZ2155

N 32° 39.678 W 111° 38.230 (NAD 83)

Altitude: 1584.4

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)

Location:
In PINAL county, AZ View Original Datasheet
Designation:
AL 59
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:

Reference Points

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Found in good shape, as described.

[Photos:]
photoCZ2155
photoCZ2155 Wider View
photoCZ2155 Petals

Recovered as described, in good condition.

[Photos:]
photoAL 59 / CZ2155
A close-up of the mark, with the GPSr.
photoAL 59 / CZ2155
A close-up of the mark alone.
photoAL 59 / CZ2155
A wide view of the general area, looking east.

Recovered Station Mark, Reference Mark E, and Reference Mark S in good condition as described with the following update to the description – the Station Mark is flanked on 4 sides by 25 foot concrete petals that form a cross.

To reach the Station from the intersection of I-10 and Toltec Highway – take S. Toltec Highway South for 9 miles to W. Pretzer Road. Turn right West on W. Pretzer Road for 1 mile to S. Toltec Buttes Road. Turn right North on S. Toltec Buttes Road for 1 mile and continue North on the track road to the Station on the right.

[Photos:]
photoCZ2155 - Benchmark – Pinal County, AZ
photoCZ2155 - RME
photoCZ2155 - RMS
photoCZ2155 – South looking North

The cross is visible in the photo. NE corner.

Documented History (by the NGS)

1/1/1966 by DMA (MONUMENTED)
DESCRIBED BY DEFENSE MAP AGENCY 1966 T-9-S. R-7-E. IN SECTION 4 NEAR THE SOUTHWEST CORNER. THE STATION MARK IS A CORPS OF ENGINEERS, U.S. ARMY DISK CENTERED IN THE TOP OF A ROUND CONCRETE POST 8 INCHES IN DIAMETER PROJECTING 0.4 FOOT ABOVE THE SURFACE OF THE GROUND. THE MARK IS STAMPED--AL 59 1966 ARMY MAP SERVICE. THE STATION MARK IS LOCATED 78 FEET NORTH OF EAST-WEST FENCE. 97 FEET NORTH OF THE CENTERLINE OF EAST-WEST DIRT ROAD. 44 FEET EAST OF NORTH-SOUTH FENCE. 56 FEET EAST OF THE CENTERLINE OF NORTH-SOUTH POWERLINE (DOUBLE POLES). TO REACH FROM THE JUNCTION OF STATE ROUTES 84 AND 93 IN CASA GRANDE, ARIZONA, GO SOUTHEAST ON 84 AND 93 FOR 10.2 MILES (TOLTEC). TURN RIGHT AND GO SOUTH ON TOLTEC HIGHWAY FOR 9.0 MILES TO CROSSROAD. TURN RIGHT AND GO 1.0 MILE WEST TO THE STATION SITE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 1993.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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