P 235

NGS PID:
LY1224
Coordinates:
N 41.358716° W 75.128366°
Location:
Elevation:
1513.72 ft.
Type:
Bench Mark Disk
Setting:
Boulder
Year Established:
1959
Established By:
NGS
Status:
Recovered
Condition:
Good as of April 17, 2004

Continuing to search for marks in the 235 series, we worked our way north on Route 402 to search for P 235. This was a relatively straightforward find, although several references on the datasheet needed to be corrected. We had plenty of measuring ahead of us! The "dim trail road" mentioned in the 1959 note can no longer be discerned, so we measured a perpendicular distance from the road centerline to the mark. That distance was found to be about 58 feet. We also were unable to find a powerpole marked "X 15" (indeed, there is no longer any pole where "X 15" is described to have been). We did find two marked poles on the western shoulder of Route 402, one north of the mark and one south, that could be used for rough measurements. We measured the distance between each pole and the point on the line between the poles directly west of the mark; measurements are given below. I was excited to find the letters "BM" painted on a tree just a few feet from the mark!

A report on the condition of this survey mark has been submitted to NGS, along with the following recovery note:

The station mark was found in good condition. The dim trail road and powerpole X 15 were not found, but the mark was measured to be approximately 58 feet east of the centerline of Route 402. The station is east of a point between two powerpoles that are 353 feet apart along the west shoulder of the highway: this point is 171 feet south along the shoulder from powerpole PPL Co. 71943 N44506, and 182 feet north along the shoulder from powerpole PPL Co. 71941 N44471.

NGS Bench Mark Disk P 235
NGS Bench Mark Disk P 235
Eyelevel view of the disk in the boulder.
Eyelevel view of the disk in the boulder.
Looking WSW toward Route 402.
Looking WSW toward Route 402.
'BM' painted on tree just several feet from the boulder.
'BM' painted on tree just several feet from the boulder.
The mark is approximately 171 feet south along Route 402 from this pole (measured along the road shoulder).
The mark is approximately 171 feet south along Route 402 from this pole (measured along the road shoulder).
The mark is approximately 182 feet north along Route 402 from this pole (measured along the road shoulder).
The mark is approximately 182 feet north along Route 402 from this pole (measured along the road shoulder).

Recovered in good condition.

This second order vertical control station is set in the top of an outcropping boulder roughly 58 feet east of the centerline of Rt. 402, about level with the blacktop, and about 1 foot above ground level. In addition, it is east of a point between two powerpoles that are 353 feet apart along the west shoulder of the highway. This point is roughly 171 feet south along the shoulder from powerpole number: PP&L Co. 71943 N44506, and roughly 182 feet north along the shoulder from powerpole number: PP&L Co. 71941 N44471. The dim trail road referred to in the 1959 historical description could not be discerned. At the station a Garmin GPSmap76 receiver with remote active antenna was used to record WAAS-corrected coordinates which were 40.8 feet from the scaled coordinates listed in the NGS datasheet. The mark is well exposed, in good condition, and the stamped designation is legible.

~Rich in NEPA~

NGS Bench Mark Disk P 235
NGS Bench Mark Disk P 235
GPSr and the station mark.
GPSr and the station mark.
Eyelevel view of station mark and setting.
Eyelevel view of station mark and setting.
Orientation view, facing west and Rt. 402.
Orientation view, facing west and Rt. 402.