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Details for Benchmark: DX4819

N 33° 55.633 W 117° 54.438 (NAD 83)

Altitude: 424.5

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
3 10 10
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

Must Read!

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This was a very interesting recovery. Not wanting to bother firefighters that might have been up all night or something, I have previously refrained from asking permission to go up in their fire training tower. Drove by again today, as they were driving back into the station. Couldn't be sleeping now! Walked over and asked, considerable explaining, phone call to the Battalion Cheif (BC), and we had permission.

Found out that the tower is due for serious refurb, or maybe destruction (budget pending). The stairs and roof are in need of replacement, and the tower is not being used at this time for training. We had to be very careful on the stairs, and the roof is a little soft in places.

Oh, and just as I finished snapping my pics quickly, of course, they had another alarm to respond to! We really hustled down the four floors of stairs, so they could get ready to respond to another potential life saving trip. Keep up the good work, guys!

The mark recovery will be documented on NGS. Other geocachers, please refrain from bothering the firefighters. They have enough to do as is.

[Photos:]
photoDX4819 Disc in Brea, CA
photoDX4819 RM1
photoDX4819 RM2
photoDX4819 RM3
photoDX4819 Mark and RM2
Wide shot looking Southeast
photoDX4819 RM3 Wide shot
Looking Southwest
photoFire Training Tower of DX4819
The marks are on the top of this three story tower.
photoFire Engine leaving
As I walked back to my car, the fire engine leaves on a run. Great timing! I was lucky to get in & out between runs!
photoDX4819 RM1 Wide Shot
Looking North

Documented History (by the NGS)

01/01/1974 by CA-059 (MONUMENTED)
DESCRIBED BY ORANGE COUNTY CALIFORNIA 1974 (JLS) THE STATION IS LOCATED AT THE BREA FIRE STATION. TO REACH THE STATION FROM THE INTERSECTION OF LAMBERT ROAD AND BERRY STREET IN BREA, GO NORTH ON BERRY STREET 0.2 MILE TO CITY OF BREA FIRE STATION ON THE WEST SIDE OF BERRY STREET. STATION IS ON TOP OF THE THREE STORM CINDER BLOCK DRILL TOWER. STAIRWAY IS ON NORTH SIDE OF TOWER. STATION MARK IS A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-10 1973. THE STATION MARK IS EPOXIED FLUSH WITH THE ROOF ABOUT 6 FEET NORTHWEST OF THE SOUTHEAST CORNER OF THE DRILL TOWER. REFERENCE MARK 1 IS A 3-3/4 IN OCS ALUMINUM DISK STAMPED RM 1 3-10-10 1973. IT IS 3.5 FEET SOUTH OF THE ROOF DOORWAY EPOXIED TO THE ROOF, 1.5 FEET SOUTH OF A 3 INCH DIAMETER WATER HYDRANT, 4.8 FEET WEST OF THE EAST PARAPET WALL, AND 5.871 METERS SOUTHEAST TO RM 2. REFERENCE MARK 2 IS A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-10 1973 RM 2, EPOXIED TO THE ROOF ABOUT 0.7 FEET NORTHWEST OF THE SOUTHEAST CORNER OF THE ROOF AND 4.176 METERS TO RM 3. REFERENCE MARK 3 IS A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-10 1973 RM 3, EPOXIED TO THE ROOF, 0.6 FEET NORTHEAST OF THE SOUTHWEST CORNER OF THE ROOF AND 6.557 METERS NORTHEAST TO RM 1. FIRE CHIEF, KENNETH L. STAGGS, (714-529-4951) MUST BE CONTACTED TWENTY-FOUR HOURS PRIOR TO OCCUPATION. PRESENT SURVEYING EQUIPMENT WILL NOT INTERFERE WITH THE ALARM SYSTEM. HEIGHT OF LIGHT ABOVE STATION MARK 1.50 METERS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1996. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day.
  • 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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