USArray Station Removal Report Form V1.5
STATION CODE: TA.N14K
STATION LOCALE DESCRIPTION: Kuskokwak Creek, AK
STATION REMOVAL LOG DATE (UTC): 5/14/2021
STATION/SENSOR DOWN TIME (UTC): 18:35
REMOVAL DESCRIPTION: Sensor removed. Casing cut off below grade. Hut removed.
ACTIONS TAKEN: Sensor issued "remove" command, log file captured (attached). Sensor orientation was not measured. The sensor and stuff sacks were frozen in place down hole and it required a scissor jack and hot water to break it all free. The lowest frozen stuff sack prevented access to the top of the sensor for orientation measurement. After the instrument and bags were removed, the PVC casing was trimmed to near grade with the Saw-z-all, then cut 6” below grade with the die grinder. A compression cap was tightened onto the top of the casing and buried with local material.
The hut, conduit and all remaining materials were slung back to Bethel
CASING CONDITIONS: The PVC casing was jacked out of the tundra 26”, measured from ground level to top of casing.
SEISMOMETER REMOVAL: There was heavy resistance from a frozen sensor and frozen lower stuff sack. We had the cooperation of 4 people using the scissor jack to pull tension on the sensor rope while boiling hot water was poured down hole.
LAT/LONG OF SENSOR HOLE: N 59.92369, W -161.68518
Distance and azimuth to Hut from Sensor hole: 200", 173.76 degrees
Wind turbine: [not present]
SENSOR ORIENTATION MEASUREMENTS:
Measured with Octans Unit: n/a
Measured with rods on pin: n/a
Casing/wellcap marked with reference orientation: No
SENSOR ORIENTATION: n/a
Sensor orientation from install: 359.89 deg
COMMENTS: Soil temperature sensor was removed. Data loggers labeled and collected for later download.
All take offs and landings were logged for the NWR reporting.
REMOVED:
Q330 TagId – 3149; bc – 5010038
Baler 44 sn – 15294; bc – 5006264
STS5A sn – 130765; bc – 5015440
VIE bc – 5009024
QEP sn – 116815; bc – 5001146
infra SETRA sn – 4495400; bc – 5010728
infra NCPA sn - H110050035; bc – 5002214
Regulator Board sn – 91; bc – 5009695
BGAN Modem sn – 353938030013076; bc – 5016063
BGAN SIM sn – 89870991341257302
XI202 sn – 725; bc – 5018247
WXT520 sn – M2820860; bc – 5017756
Power sys 1.6.4
Charge Controller bc – 5016797
LiFePO4 sn – 5560; bc – 5017623
LiFePO4 sn – 5594; bc – 5017644
LiFePO4 sn – 5596; bc – 5017646
LiFePO4 sn – 5617; bc – 5017666
LiFePO4 sn – 5665; bc – 5017709
LiFePO4 sn – 5672; bc – 5017715
DAMAGE: Soil probe cables chewed, door tape chewed. Casing jacked out of tundra partway. No lasting damage to the surrounding area from station.
LEFT AT SITE: cutoff casing below grade
VISITORS: R. Bierma, K. Schroeder (Recon), J. Elsass (Alpine). T. Bue (Alpine)