USArray Station Removal Report Form V1.0
STATION CODE: TA.M17K
STATION LOCALE DESCRIPTION: Holitna River, AK
STATION REMOVAL LOG DATE: 05/08/21
STATION/SENSOR DOWN TIME (UTC): 1921 UTC (powered down one day early 05/07/2021 UTC)
REMOVAL DESCRIPTION: Lithium batteries were removed one day earlier than the station removal. Sensor removed and casing cut off 6" below grade. Hut and station infrastructure removed.
ACTIONS TAKEN: Powered the station back up on arrival. Accessed Willard to issue the remove command for the STS5-A.
Sensor casing cutoff 6” below grade with a die grinder with abrasive wheels. The casing was back filled with some rock and site material, and then plugged with a 6" expansion end plug. The remaining hole was filled with dirt.
The hut was packed with the conduit, well cap, casing cut off, mustache mount and any other site debris. Removed the soil thermistor.
LAT/LONG OF SENSOR HOLE: N 61.40090, W 157.43750
SENSOR ORIENTATION MEASUREMENTS:
Measured with OCTANS Unit: 0 degrees (partially pulled on sensor retrieval line prior to measurement so may be slightly errant)
Original orientation: 0.08 degrees using OCTANS
COMMENTS: The casing cutoff process took ~15 minutes and consumed 3 cutoff wheels.
REMOVED:
Q330 TagId – 2029; bc – 5005226
Baler 44 sn – 16518; bc – 5011851
STS5A sn – 130866; bc – 5016456
VIE bc – 5009219
QEP sn – 117056; bc – 5001623
infra SETRA sn – 4596385; bc – 5011511
infra NCPA sn - H111180387; bc – 5011760
Regulator Board sn – 244; bc – 5009882
BGAN Modem sn – 353938030190403; bc – 5018296
BGAN SIM sn – 898709916412350489
XI202 sn – 701; bc – 5018223
WXT520 sn – M4730610; bc – 5018188
Power sys 1.6.4
Charge Controller bc – 5017787
LiFePO4 sn – 5357; bc – 5017326
LiFePO4 sn – 5371; bc – 5017338
LiFePO4 sn – 5406; bc – 5017364
LiFePO4 sn – 5380; bc – 5017433
LiFePO4 sn – 5497; bc – 5017499
LiFePO4 sn – 5504; bc – 5017505
DAMAGE: None
LEFT AT SITE: Cutoff casing below surface.
VISITORS:
- Miner
- Schroder
- Elsass