- THURBER ENGINEERING L T D. ALBERTA TRANSPORTATION NORTH CENTRAL REGION- ATHABASCA AREA INSTRUMENTATION MONITORING RESULTS SPRING 2014 SECTION C SITE NC17A: HWY 63:12 TWINNING PROJECT BETWEEN SW18-90-9-W4M AND NW31-90-9-W4M ON HWY 63 NEAR FORT McMURRAY 1. OBSERVATIONS 1.1 Field Program and Instrumentation Status One slope inclinometer (8199-2) was read at the Highway 63: 12 site on May 27 , 2014, by Mr. Chad Gray, C.E. T. , and Mr. Jordan Balfour, G.I.T., both of Thurber Engineering Ltd . (Thurber). The Sl was read using a RST probe with 2 ft. wheelbase and a RST hand-held readout. Inclinometer reading depths were defined as per cable markings with respect to the top of the inclinometer cable clamps. 2. INTERPRETATION 2.1 General 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 Zones of Movement Zones of new movement were not observed since the last set of readings in the fall of 2013. Zones of movement are summarized on Table NC17A-1 at the end of this report. Table NC 17 A - 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. 200, 9636- 51 Avenue, Edmonton , AB T6E 6A5 T: 780 438 1460 F: 780 437 7125 thurber . ca
- T H U R B E R 2.3 Interpretation of Monitoring Results 2.3.1 Preamble The instruments were installed to monitor potential movements in the valley colluvium deposits into which the highway backslopes were cut during the highway twinning project in 1999. The instruments located north of km 3.6 were installed at the higher backslope locations to check for potential movements between the existing Enbridge pipeline and the highway. The highest backslope sections are present at km 2.4 and km 2.7 where some of the colluvium was removed as borrow during highway development. These areas have been subject to backslope slumping. Additional instruments were installed at km 2.4 in January 2009 at a location where a backslope slump is toeing up into and distorting the southbound lanes of the highway. 2.3.2 km 2.4 Instruments SI09-3 located in the highway median, was damaged between the spring 2012 and fall 2012 readings. A casing joint approximately 1.2 m below ground surface was damaged. All of the instruments located within the slide area have previously sheared off. 2.3.3 km 2.7 Instruments The creep movement rate has decreased in Sl99-2 by 2.4 mm/yr to a rate of 1.7 mm/yr over 20.6 to 22.4 m depth. 3. RECOMMENDATIONS 3.1 Future Work The instruments should be read again in the fall of 2014. 3.2 Instrumentation Repairs No repairs are required at this time. Date: July 3, 2014 Client: Alberta Transportation File: 15-16-313 Page 2 of 5 e-file: \\H\15\16-313 rpt N C 1 7 a - Edm
T H U R B E R T A B L E N C 1 7 A -1 S P R I N G 2 0 1 4 - H W Y 6 3 : 1 2 T W I N N I N G P R O J E C T , N E A R F O R T M c M U R R A Y Y I N S T R U M E N T A T I O N S U M M A R D t M ae om ore : ·t d M ay 27 2014 ' TOTAL CHANGE IN CUMULATIVE INCREMENTAL RATE OF RESULTANT MOVEMENT MAXIMUM DATE CURRENT MOVEMENT CURRENT MOVEMENT RATE OF OF SINCE RATE OF DATE AND STATUS SINCE INSTRUMENT# MOVEMENT PREVIOUS PREVIOUS MOVEMENT REINITIALIZED DEPTH OF OFSI PREVIOUS (mm/yr) READING READING (mm/yr) READING MOVEMENT (mm) TO DATE (mm/yr) (mm) . 8 b e t w e e n 1 3 . 3 o v e r 1 . 3m 1 7 t o 3 . 7 m depth O c t . 2 0 0 8 a n d NIA NIA NIA in 12:f direction M a v 2 0 0 9 S h e a r e d off a t M a y 2 6 , 2 0 0 9 S / 9 9 - 1 O c t . 2 2 , 1 9 9 9 p t h 3 . 3 o v e r 1 3 . 5 m 78 . 5 b e t w e e n 3 . 7 m d e 2 2 , 1 9 9 9 a n d t o 1 5 . 3 m d e p t h O c t . NIA N/A NIA in 12:f direction O c t . 2 5 , 1 9 9 9 45.2 over 20.6 m 33.1 between September 1.7 -2.4 8199-2 Nov. 4,1999 to 22.4 m depth Nov. 4 and Operational 1.2 17, 2013 i n 56° direction 10, 1999 NIA NIA NIA NIA NIA S h e a r e d off a t O c t . 2 2 , 1 9 9 9 S e p t . 2 2 , 2 0 0 4 S / 9 9 - 3 2 . 6m d e p t h NIA NIA NIA NIA NIA S h e a r e d off a t J u n . 1 5 , 2 0 0 7 S / 9 9 - 4 O c t . 2 2 , 1 9 9 9 NIA NIA NIA NIA NIA 2 . 1m d e p t h D prov1des approximate locations of the mon1tonng 1nstrumentat1on for th1s s1te . Drawmg 15-16-286-NC 17 A 1n s e c t 1 o n Client: Alberta Transportation Date: July 3, 2014 File: 15-16-313 e-file: \\H\15\16-313 rpt NC17a- Edm Page 3 o f 5
- T H U R B E R TABLE NC17A -1 CONTINUED ... SPRING 2014- HWY 63:12 TWINNING PROJECT, NEAR FORT McMURRAY INSTRUMENTATION SUMMARY T O T A L I N C R E M E N T A L C H A N G E IN C U M U L A T I V E N T R A T E O F R E S U L T A N T M O V E M E C U R R E N T M A X I M U M D A T E C U R R E N T S I N C E M O V E M E N T M O V E M E N T R A T E O F O F R A T E O F D A T E S T A T U S P R E V I O U S S I N C E INSTRUMENT# A N D P R E V I O U S M O V E M E N T R E I N I T I A L I Z E D M O V E M E N T R E A D I N G P R E V I O U S D E P T H O F OFSI (mmlyr) (mmlyr) R E A D I N G (mm) R E A D I N G M O V E M E N T (mmlyr) T O D A T E (mm) 1 6 . 3 over0 . 3 m 7 . 3 b e t w e e n S / 9 9 - 4 R N I A t o 2. 1 d e p t h M a y 2 0 0 9 a n d D e s t r o y e d S e p t . 19 , 2 0 1 1 N / A N I A S e p t . 1 4 , 2 0 0 6 m ( r e p l a c e m e n t f o r $ 1 9 9 - 4 ) in 13ft d i r e c t i o n O c t 2 0 0 9 6 5 . 8 o v e r 1 . m 3 6 . 8 b e t w e e n 7 S I 0 3 - 5 N / A N I A N I A M a y 16 , 2 0 0 3 t o 4 . 8 m d e p t h M a y 2 0 0 9 a n d D e s t r o y e d S e p t . 1 9 , 2 0 1 1 ( r e p l a c e m e n t f o r S l 9 9 - 5 ) O c t o b e r 2 0 0 9 in 4ff direction 1 3 . 6 o v e r 1 2 . 1 m b e t w e e n 7.5 N I A d e p t h M a y 2 0 0 9 a n d D e s t r o y e d S e p t . 19 , 2 0 1 1 N I A N I A S l 9 9 - 6 O c t . 2 3 , 1 9 9 9 to 1 3 . 9 m i n 71 ° d i r e c t i o n O c t . 2 0 0 9 D a m a g e d ! N o d i s c e r n i b l e N o d i s c e r n i b l e N I A N I A N I A J a n . 2 6 , 2 0 0 9 c a n n o t b e M a y 15 , 2 0 1 3 S I 0 9 - 3 m o v e m e n t m o v e m e n t r e p a i r e d 1 1 8 . 6 b e t w e e n 4 9 . 5 over4 . 6 m J u n e 2 3 a n d N I A N I A N I A to 7. 0 m d e p t h J u l y 1 2 0 0 9 S h e a r e d off at S I 0 9 - 5 J a n . 2 6 , 2 0 0 9 O c t . 3 , 2 0 0 9 6 . 0 m d e p t h 183.4 between 89.7 over 8.8 m N I A N I A N I A J u n e 23 and to 11.9 m d e p t h July 1 2009 4 8 7 . 3 b e t w e e n 3 3 . 6 o v e r 14 . 3 S h e a r e d off a t m J u n e 2 3 a n d J u l y 1 , 2 0 0 9 N I A N I A N I A S I 0 9 - 7 J a n . 2 6 , 2 0 0 9 14 . 7 d e p t h t o 1 5 . 5 m d e p t h m J u l y 1 2 0 0 9 471 .9 between 72 .8 over 17.8 m S h e a r e d off a t N I A S I 0 9 - 8 2 6 , 2 0 0 9 J u n e 2 3 a n d J u l y 1 , 2 0 0 9 N I A N I A J a n . t o 2 0 . 2 d e p t h 19 . 8 m d e p t h m J u l y 1 2 0 0 9 A m sect1on D prov1des approx1mate locat1ons of the mon1tonng mstrumentat1on for th1s s1te. Drawmg 15-16-313-NC 1 7 Date: July 3, 2014 Client: Alberta Transportation 15-16-313 File: \\H\15\16-313 rpt NC17a - Edm Page 4 of 5 e-file:
- T H U R B E R TABLE NC17A-2 SPRING 2014- HWY 63:12 TWINNING PROJECT, NEAR FORT McMURRAY POOR BOY READING SUMMARY 0 M . ate on1tored: May 2 7 , 2 0 1 4 Poor Boy Probe Depth CHANGE IN Below Ground Level to MEASURED WATER MAXIMUM Bottom STICKU WATER PREVIOUS LEVEL INSTRUMENT DATE DEPTH CURRENT WATER p of Probe READING SINCE LEVEL LEVEL # INITIALIZED (m) STATUS (m) (m) BGS (m) PREVIOUS BGS (m) READING 4' 3' 2' 1' (m) Sheared 3.50 on Oct. - - - - PB09-1 Jan. 26, 2009 1 1 .67 0.85 off a t 0.95 NIA NIA NIA 3, 2009 m depth Sheared 14 . 61 on - - - - PB09-2 22.70 0.81 off at 3. 81 June 23, NIA NIA Jan. 26, 2009 NIA m depth 2009 Sheared 3.10 on May - - - - off at 4.1 m PB09-4 Jan. 26, 2009 12.67 0.83 NIA NIA NIA 1 0 , 2010 depth Sheared 3.18 on June - - off at 3.9 m - - PB09-6 Jan. 26, 2009 12.10 0.96 NIA NIA NIA 23, 2009 depth 15-16-313-NC 17 A m s e c t 1 o n 0 prov1des approximate l o c a t 1 o n s of the momtonng mstrumentat1on for th1s s1te . O r a w m g Client: Date: July 3, 2014 Alberta Transportation 15-16-313 File: Page 5 of 5 e-file: \\H\15\16-313 rpt NC17a- Edm
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