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Review Checklist for Subsidence Monitoring Report Mlne: Foidel Creek Date this review was completed: 1/16/02 K Permit No.: C-82-056 CDMG reviewer: Tom Kaldenbach Report period: 2"d half 2000 Panel(s) mined during report period: 3 Right and 2 Right Monitorin re uirement g 9 Re ulation citation g In compliance: Yes / no ? Comment Installed and surveyed See comment on monuments prior to 2.05.6(6)(c)(i)(A) Yes 2.05.6(6)(c)(i)(D), below. undermining Located monuments to Total surface strain is determined detect vertical by locating monuments at subsidence and 2.05.6(6)(c)(i)(B) Yes expected points of minimum horizontal displacement. strain (over gateroads) and maximum strain (mid- ane]). Monitored each structure's orientation, 2.05.6(6)(c)(i)(C) Yes location, elevation Monitored each monument and structure 2.05.6(6)(c)(i)(D) Yes at least uarterl Only the three powerlines (all in one corridor) and Middle Creek were undermined during the reporting period. Station H63 Commenced monitoring (pane] 3R) was surveyed 10/25/99 of each monument and and station H64 (pane12R) was structure at least one 2.05.6(6)(c)(i)(D) Yes surveyed 6/9/00, both more than month prior to six months before the powerlines undermining were undermined by each panel. Middle Creek overlying panel 2R was surveyed in 5/99, more than six months prior to undermining in 8/00. Surveyed Hayden-Gore Pass powerline on schedule: daily when pp. 2.05-191.1 and yes longwall face was 500 191.2 of permit ft. before and 1500 ft. after owerline. Surveyed Wolcott Tap- Wolcott (PSC) powerline on schedule depending on longwall location: p. 2.05-191.2 of yes a) advancing within permit 300 ft of line - survey every two days; b) underneath line