i ~ EDMONTO~ - • • THURBER ENGINEERING LTC . GEOTECHNICAL ENVIRONMENTAL • MATERIALS ALBERTA TRANSPORTATION NORTH CENTRAL REGION- ATHABASCA AREA INSTRUMENTATION MONITORING RESULTS F A L L 2 0 0 8 S E C T I O N C S I T E N C 1 7 a : H W Y 6 3 : 1 2 T W I N N I N G P R O J E C T B E T W E E N S W 1 8 - 9 0 - 9 - W 4 M A N D N W 3 1 - 9 0 - 9 - W 4 M O N H W Y 6 3 N E A R F O R T M c M U R R A Y 1 . O B S E R V A T I O N S 1.1 F i e l d P r o g r a m a n d I n s t r u m e n t a t i o n S t a t u s Five slope inclinometers (SI99-1 , 99-2, 99-4R, 99-6 and 03-5) were monitored at Highway 63:12 site on October 7, 2008, by Mr . Justin Sousa and Mr. Niels Rasmussen, of Thurber Engineering Ltd. (Thurber). The Sis were read using an RST Digitilt probe with 2 ft wheelbase and an RST hand-held and SINCO Datamate readouts, respectively. Inclinometer reading depths were defined as per cable markings with respect to the top of the inclinometer cable clamps with the exception of SI99-4R, which was read from the top of the casing. 2 . I N T E R P R E T A T I O N 2.1 G e n e r a l Sl plots A and B directions are presented in Section D and are summarized below. Where movement has been recorded the resultant plot (X direction) and rate of movement have also been provided. 2 . 2 Z o n e s of M o v e m e n t There is a possible new zone of movement occurring in the upper 6 m of 8199-1 . Zones of new movement were not observed in the other Sis since the last set of readings in the Spring 2008. S u i r e 200 . \ ! 5 3 6 5 1 A • J e n u e . E D M O N T O N . AB . C a n a d J T6E fj;l.5 T 780 -4: ;s 1460 F. 78D-J37 -71 25 w w w . t h u r b e r .ca • CALG . I ' , R Y • FORT i \ l cMURRAY • VANCOuVER • VICTORIA • T O RONT O • K A i V l L O O PS • S Q U A M I S H
- T H U R S E R E N G I N E E R I N G L T C . 1 1 1 1 Zones of movement are summarized on Table NC17a - 1 at the end of this report. Table NC17a- 1 also provides a historical account of the total movement that has occurred at this site since the initialization of the slope inclinometers, the depth of movement, and the maximum rate of movement. 2.3 Interpretation of Monitoring Results The movement rates have generally slightly increased as compared to the last readings in the spring 2008. The maximum rate of movement recorded along the previously identified movement zones during this site visit was 5.1 mm/yr in SI03-5. Slope inclinometers Sl99-2, SI99-4R and Sl99-6 have registered current rates of movement of 3.4 mm/yr, 4.6 mm/yr and 1.9 mm/yr, respectively. Sl99-1 shows a possible new zone of movement on the upper 6 m of the Sl with an incremental movement of 2.4 mm since spring 2008. RECOMMENDATIONS 3 . 3 . 1 Future Work The instruments should be read again in the Spring 2009. The next reading for Sl99-1 should help to confirm whether a new zone of movement is occurring in the upper 6 m. 3.2 Instrumentation Repairs No instruments need to be repaired at this time. C l ient: Alberta Transportation Date: November 26, 2008 Fil e: 15-1 6-215 Page 2 of 4 e-file: 08\15\16-215 rpt NC17a
~UREIER ENGINEERING I.. TO. .. Jill TABLE NC17A -1 FALL 2008- HWY 63:12 TWINNING PROJECT, NEAR FORT McMURRAY INSTRUMENTATION SUMMARY Date Monitored· October 7 2008 TOTAL CUMULATIVE INCREMENTAL CHANGE IN RESULTANT MOVEMENT RATE OF MAXIMUM DATE CURRENT MOVEMENT CURRENT SINCE MOVEMENT DATE RATE OF OF RATE OF AND STATUS PREVIOUS SINCE I N S T R U M E N T # MOVEMENT PREVIOUS MOVEMENT REINITIALIZED DEPTH OF OFSI READING PREVIOUS (mm/yr) READING (mm/yr) MOVEMENT (mm) READING TO DATE (mm/yr) (mm) 2.4 over 0.0 m 19.9 between Oct. 22, 1999 and to 6.1 m depth 2.4 7.6 7 . 1 i n 123° direction Oct. 25, 1999 Sl99-1 Oct. 22 . 1999 Operational May 14, 2008 3. 25 over 13.5 m 78.5 between No discernable to 15.3 m depth Oct. 22, 1999 and N/A N/A movement in 123° direction Oct. 25, 1999 31 .7 over 20.6 m 33.1 between Nov. 4 and Operational May 14, 2008 1.4 0.2 Sl99-2 Nov. 4,1999 to 22.4 m depth 3.4 in 56° direction 10, 1999 NIA N IA N /A NIA NIA Sheared off at Sept. 22, 2004 S/99-3 Oct. 2 2 , 1999 2.6m depth NIA N/A N /A N I A N /A Sheared off at N/A N /A N /A N IA NIA Jun. 15, 2007 S/99-4 Oct. 22, 1999 2. 1m depth 5.9 over 0.3 m 4.6 between S/99-4R 3 .1 May 2008 and Operational May 14, 2008 1.9 4.6 Sept. 14,2006 to 2.1 m depth (replacement for Sl99-4) in 135° direction Oct 2008 33.4 over 1.7 m 10.8 between SI03-5 Oct. 2005 and Operational May 14, 2008 2.2 5.1 0.7 May 16, 2003 to 4.8 m depth (replacement for Sl99-5) i n 46° direction May 2006 5.4 over 12 .1m 3.4 between 1.9 1.8 May 2005 and Operational May 14, 2008 0.8 Sl99-6 Oct. 23, 1999 to 13.9 m depth Oct. 2005 in 71 ° direction o n 0 prov1de a sketch of the approximate location of the momtonng mstrumentat1on for th1s s1te . F1gure 1 A 1n s e c t 1 Date: November 26, 2008 Client: Alberta Transportation Page 3 of 4 15 - 16 - 215 File: 08\15 \16-215 rpt NC17a e-file:
A TRANSPORTATION ALBERT NORTH CENTRAL REGION- ATHABASCA AREA (CE143/06) INSTRUMENTATION MONITORING FIELD SUMMARY (NC 17A) J a n u a r y 2009 Readout: Sinco Location: HWY 63: 12, Twinning (km's 2 to 9) Extension: 2.75" File Number: 15-16-220 Temp: N / A Probe: SJNCO Read by: L A Cable: RST 300ft SLOPE INCLINOMETER (SI) READINGS Remarks Stickup Depth from top Azimuth of Current Bottom GPS Location Date Sl# (ft) of casing (ft) A+ Groove Depth Readings (UTM) B- A+ A- B + Longitude (W) Latitude {N) 374 -370 -393 380 26-Jan-09 3.5 36-6 Sl09-3 6294971 473427 -523 522 -844 845 26-Jan-09 4.1 40-6 SJ09-5 6294972 473397 833 -832 1154 -1162 26-Jan-09 3.1 5 0 - 6 SI09-7 6295117 473372 1338 68-6 -1638 1636 -1324 6294930 473342 26-Jan-09 2.6 SI09-8 STANDPIPE PIEZOMETER (SP) READINGS P o o r Boy Probe Depth Stick-up Water level below Total length PB# GPS Location Date p i p e to bottom of probe (m) (m) top of pipe (m) of pipe (m) below top o f ( U T M ) 1' 4' 3' 2' Latitude (N) Longitude (W) 11.67 11.67 I 1.67 5.78 11.67 11.67 6295200 473413 26-Jan-09 0.85 PB09-l 22.70 22.70 19.70 19.80 22.70 26-Jan-09 0.81 16.09 PB09-2 6295216 473351 12.67 12.67 12.67 4.48 12.67 12.67 6294942 473393 26-Jan-09 0.83 PB09-4 12.10 12.10 4.48 12.10 12.10 12.10 473398 26-Jan-09 0.96 PB09-6 6295002 INSPECTOR REPORT ON 26-JAN-09
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