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Details for Benchmark: CZ0615

N 32° 21.862 W 111° 27.711 (NAD 83)

Altitude: 2427.3

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

Location:
In PIMA county, AZ View Original Datasheet
Designation:
POND AZ MK
Marker Type:
azimuth mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Recovered in good condition as described with the following update to the description - the graded road is now paved with macadam.

[Photos:]
photoCZ0615 - Benchmark - Pima County, AZ
photoCZ0615 - Southeast looking Northwest

found in good condition. Also found near-by tribrach, marked 12-B.

[Photos:]
photoCZ0615 marker
photoconcrete pillar with tribrach
phototribrach

Mark found in good. Condition. I didn't look for the Triangulation station or reference marks at this time.

[Photos:]
photoPOND
AM Disk
photoWitness Post

Documented History (by the NGS)

01/01/1962 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1962 TO REACH THE STATION FROM THE POST OFFICE AT CORTARO, DRIVE NORTHWEST ON STATE HIGHWAYS 84 AND 93 FOR 3.7 MILES TO THE AVRA VALLEY ROAD ON THE LEFT. TURN LEFT AND DRIVE WEST ON THE AVRA VALLEY ROAD FOR 15.4 MILES TO A SIDE ROAD ON THE LEFT LEADING TO THE EL PASO NATURAL GAS COMPANY, TUCSON COMPRESSOR STATION. CROSS A CATTLE GUARD AND CONTINUE STRAIGHT AHEAD WEST ON THE MACADAM SURFACED ROAD FOR 4.5 MILES TO A MACADAM SURFACED SIDE ROAD LEFT. TURN LEFT, SOUTHWEST, FOR 0.25 MILE TO A TRACK ROAD ON THE LEFT. TURN LEFT AND DRIVE SOUTHWESTERLY ON THE TRACK ROAD FOR 0.05 MILE TO A CROSSROAD. CONTINUE STRAIGHT AHEAD, SOUTHWEST, ON THE TRACK ROAD FOR 0.5 MILE TO AN EAST-WEST FENCE, A GATE AND THE AZIMUTH MARK. THE AZIMUTH MARK, A STANDARD DISK STAMPED POND 1962, IS SET IN THE TOP OF A CYLINDRICAL CONCRETE MONUMENT, 12 INCHES IN DIAMETER, PROJECTING 3 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 46.5 FEET SOUTHWEST OF THE WEST GATE POST IN THE EAST-WEST FENCE, 19.0 FEET SOUTH OF THE FENCE, 14.0 FEET NORTHWEST OF THE CENTER OF THE ROAD AND 2.0 FEET WEST OF A METAL WITNESS POST WITH SIGN.
01/01/1962 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 23.5 MI W FROM CORTARO. 3.7 MILES NORTHWEST ALONG STATE HIGHWAY 84 FROM THE POST OFFICE AT CORTARO, THENCE 19.0 MILES WEST ALONG THE AVRA VALLEY ROAD, THENCE 0.3 MILE SOUTH ALONG AN OILED ROAD, THENCE 0.5 MILE SOUTH-SOUTHWEST ALONG A GRADED ROAD TO A GATE IN AN EAST-WEST FENCE LINE, 19.4 FEET SOUTH OF AN EAST-WEST FENCE LINE, 15 FEET NORTHWEST OF THE CENTER OF A GRADED ROAD, 1.9 FEET SOUTHWEST OF A METAL WITNESS POST, A BRONZE DISK SET IN THE TOP OF A 12-INCH CONCRETE CYLINDER WHICH PROJECTS 5 INCHES.

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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