Attachment 5 2013 Industrial Waste Water Report · Clarified water recycled from the industrial...

Attachment 5

2013 Industrial Waste Water Report

March 31, 2014 Alberta Environment & SRD 11th Floor, Oxbridge Place 9820-106 Street Edmonton, Alberta T5K 2J6 Attention: Director Monitoring and Evaluation, Environmental Assurance Syncrude Annual Industrial Wastewater and Industrial Runoff Report 2013 Please find enclosed Syncrude Operating Approval 26-02 (as amended) clause 4.2.24 annual Industrial Wastewater and Industrial Runoff report for Mildred Lake and Aurora North. Please contact me at [email protected] if you have any questions or concerns regarding the content of this report. Sincerely,

Mike McLean Sr. Environmental Technologist Syncrude Canada Ltd.

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SYNCRUDE CANADA LTD.

Mildred Lake Site Aurora North Site

Industrial Wastewater & Industrial Runoff

Annual Report

2013

Submission to: Alberta Environment Northern Region Pursuant to: Syncrude Approval 26-02 clause 4.2.24

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Table of Contents Abbreviations .................................................................................................................. 5 Mildred Lake Water Management Summary 4.2.24(a) .................................................. 6

Surface Water Diversions ......................................................................................... 6 West Interceptor Ditch .............................................................................................. 7 Southwest Sand Storage Facility Surface Drainage ................................................. 7 Mine Drainage .......................................................................................................... 7 South Mine Sump ..................................................................................................... 7 Gravel Pit Dewatering .............................................................................................. 8

Industrial Wastewater Control System Mildred Lake .................................................... 9 Southwest Sand Storage Facility ............................................................................ 10 Coke Deposition ..................................................................................................... 10 Water Management and Conservation at Mildred Lake .......................................... 11

Aurora Water Management Summary 4.2.24(a) .......................................................... 12 Cut-off Wall ............................................................................................................ 15

Industrial Wastewater Control System at Aurora ........................................................ 16 Water Management and Water Conservation Initiatives at Aurora.......................... 18

Volume of liquids discharged to the MLSB and ASB 4.2.24(d)(e)(f)(g) ........................ 19 Mildred Lake & Aurora Domestic Wastewater Treatment System .................................. 27 Parameter Data MLSB, SWSS and Beaver Creek 4.2.24(b) ....................................... 28

MLSB Parameter Data 4.2.24(b) .............................................................................. 30 Historical Water Quality MLSB, SWSS Seepage Control & Beaver Creek ................. 31 Lower Beaver Creek Ecological Risk Assessment (ERA) Summary .......................... 33

Southwest Sand Storage Conversion Project Parameter Data 3.3.16 ......................... 35 Aurora Clean Water Discharge Chemistry & Historical Chemistry Data 4.2.24(b)(j) ..... 44 Mildred Lake Clean Water Discharge Chemistry 4.2.24(b)(j) ....................................... 46 Results and status of any industrial wastewater characterization and review conducted over the previous year 4.2.24(i) ................................................................................... 48 Substances added or consumed in the plants industrial process which may have an effect on the quality of wastewater generated 4.2.24(c) ............................................... 49 Appendix A: Historical Parameter Trends MLSB ........................................................... 53 Appendix B: Historical Parameter Trends MLSB, SWSS, Beaver Creek ....................... 59 Appendix C: Historical Ionic Ratio Trends MLSB, SWSS, Beaver Creek ....................... 65 Appendix D: Historical Parameter Trends Aurora Clean Water Discharge ..................... 67 Appendix E: Historical Parameter Trends Muskeg River ............................................... 70 Appendix F: Water Monthly Report Summary 4.2.24 (h)............................................. 73 Appendix G: Surface Water Diversion Figure 2.6 Mildred Lake & Figure 2.3 Aurora ..... 74

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List of Figures Figure 1: Mildred Lake Plant process water systems ....................................................... 9 Figure 2: Aurora North Plant water flow outline ............................................................. 13 Figure 3: Aurora EMSC Inlet & EMSC Outlet total discharge water quantity .................. 14

List of Tables Table 1: Aurora Clean Water Discharge quantity ........................................................... 14 Table 2: Volume of Liquid (including solids fraction) to Tailings MLSB .......................... 19 Table 3: Extraction Inputs to MLSB, SWSS, EIP, SWIP, and NMSPW .......................... 19 Table 4: Coke Deposited in MLSB ................................................................................. 20 Table 5: Reclaimed water from MLSB and pond levels ................................................. 20 Table 6: Annual quantities of water recycled from MLSB & SWIP ................................. 21 Table 7: SWSS Facility Fluids Inventory ........................................................................ 21 Table 8: Volume of Intersite Recycle water transfer Mildred Lake & Aurora .................. 22 Table 9: Monthly Tailings Volumes Aurora .................................................................... 22 Table 10: Volumes diverted internally at Aurora ............................................................ 23 Table 11: Monthly free water pond elevations Aurora .................................................... 24 Table 12: Monthly volumes mature fine tails (MFT), fine fluid tails (FFT) Aurora ........... 24 Table 13: Monthly volumes recycle water from ASB to Aurora Process......................... 25 Table 14: Vacuum truck disposals to MLSB and ASB during 2013 ................................ 26 Table 15: Parameter data Seepage Control Pond, Beaver Creek at Highway 63 and SWSS Seepage Water 4.2.17(a, c, d) ......................................................................... 28 Table 16: Comparison of Ionic Ratios for Selected Surface Waters (Mildred Lake site) . 29 Table 17: MLSB Parameters 4.2.17(b) ........................................................................ 30 Table 18: SWSS Parameters 3.3.16 ............................................................................ 36 Table 19: Syncrude Mildred Lake and Aurora discharge locations & monitoring sites ... 47 Table 20: Substances added or consumed in Syncrude industrial process ................... 49

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Abbreviations AEPN-E Aurora East Pit North - East AEPN-W Aurora East Pit North - West ASB Aurora Settling Basin BCR Beaver Creek Reservoir CT Composite Tailings CWD Clean Water Ditch DWD Dirty Water Ditch EIP East In-Pit EMSC East Mine Seepage Curtain FFT Fine Fluid Tailings Km3 Thousand cubic metres MFT Mature Fine Tailings MLSB Mildred Lake Settling Basin Mm3 Million cubic metres RCW Recycle cooling water SSP Syncrude Sweet Premium SID Southwest Interceptor Ditch SWSS Southwest Sand Storage Pond WID West Interceptor Ditch WIP West In-Pit Settling Basin

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Mildred Lake Water Management Summary 4.2.24(a) Syncrude’s operations process-affected water and surface runoff drainage water from the plant and mine area is contained within the industrial wastewater control system. This system includes large storage reservoirs that have sufficient retention time to facilitate settling of solids. Clarified water recycled from the industrial wastewater control system accounts for the majority of process water used at Syncrude. Recycle water does not meet all operation requirements (e.g. boiler feed water) and Athabasca River water is diverted for industrial and municipal purposes. Syncrude Mildred Lake water management activities three major components discussed in this report:

Surface Water Diversions o Please refer to Appendix G - Figure 2.6 Mildred Lake (appended)

Industrial Wastewater Control System o Please refer to Figure 1 Mildred Lake Plant Process Water Systems

Domestic Wastewater Treatment System Surface Water Diversions Athabasca River Diversion Syncrude Water Act License 00035216 authorizes annual diversion of 61.67 million cubic metres (Mm3) of water from the Athabasca River for industrial and municipal purposes. Athabasca river water diversion intake is pumped to a sedimentation pond located in the river valley, then directed to Mildred Lake Reservoir where separate intakes are located for plant water and potable water. Athabasca River annual quantity diverted was 43.35 Mm3. Beaver Creek Diversion Syncrude Water Act License 000337436 authorizes direction away from the mining area of Beaver Creek and surface water originating south of the lease. Beaver Creek Reservoir (BCR) receives input from three major sources. Upper Beaver Creek drainage area enters the southern end of BCR. Creek 4 drainage area to the west of BCR flows to the Southwest Interceptor Ditch (SID) and then directed to the northwest of BCR. Also a portion of the upstream Creek 4 is directed into Creek 5 that enters at the southwest of BCR. System consists of Beaver Creek Dam, Beaver Creek Reservoir, Ruth Lake, Poplar Creek Reservoir, Polar Creek Spillway, and interconnecting channels. Beaver Creek Reservoir directed to Poplar Creek annual quantity was 46.85 Mm3. Syncrude Water Act License 000266501 authorizes annual diversion of 12 Mm3 of water from Beaver Creek Reservoir for industrial purposes. Syncrude began the commissioning of the Base Mine Lake, industry’s first full scale demonstration of an aquatic reclamation option. This demonstration will be conducted as per Syncrude’s commitment and subsequent approvals from Alberta Environment and the ERCB. The expectation is that this lake will over time evolve into an aquatic ecosystem and become a value added component of the final lease closure landscape. Water outflow of the lake will be directed to Syncrude's active tailings facilities until such time that it can be safely returned directly to the environment. An end pit lake research initiatives annual report is submitted to AENV. Syncrude Base Mine Lake project diverted from Beaver Creek Reservoir annual quantity of 5.96 Mm3.

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West Interceptor Ditch West Interceptor Ditch (WID) directs surface run-off and other hydrological flows approaching the Mildred Lake Site from west and north. Syncrude Mildred Lake site is dewatered in advance of mining by finger ditching into sedimentation ponds. In 2012, Syncrude re-routed the WID to accommodate mine progression and a new overburden dump. December 2013, Syncrude started construction of a new large capacity WID final sedimentation pond. Water will be pumped from this WID final sedimentation pond to the existing rock gabion structure at the entry to Bridge Creek. Detailed plans and information were submitted to AENV under the Water Act. Muskeg dewatering was not suitable for discharge due to Total Suspended Solids concerns and the annual quantity diverted into the on-site closed circuit was 0.671 Mm3. Southwest Sand Storage Facility Surface Drainage Seepage water and runoff from the SWSS facility is collected in the perimeter Seepage Collection Ditch system, which is routed to the Recycle Pond via the mine dirty water ditch system. Seepage Collection Ditch around the SWSS Facility continues to be maintained to accommodate 100-Year storm event. Routing from the SWSS Facility to the mine dirty water system was changed during 2002 due to the advancement of the W1 Overburden Dump to the northeast of the sand structure. Seepage and runoff from the northern and western slopes of the SWSS Facility will continue to be routed around the north end of the overburden dump. Seepage and runoff from the eastern slope will be directed eastward through a ditch developed in 2002. This development is expected to be compatible with long-term closure of the SWSS Facility and associated structures. Mine Drainage All water that has been in contact with exposed oil sand in the mining areas is collected by a system of ditches, sumps, and pumps. Water collected from the Northwest In-Pit is directed to the Southwest In-Pit Pond (SWIP). Mine drainage system routed water to either to the recycle pond, MLSB through the Effluent Pond, or the West In-Pit (WIP) annual quantity was approximately 0.87 Mm3. South Mine Sump Water from a 1.6 km2 drainage area, that includes the reclaimed overburden dumps along the south perimeter of the base mine, is routed to the south mine sump. During emergency shutdowns the Fine Fluids Tailings (FFT) return line from the East In-Pit to the West In-Pit Settling Basin (WIP) may have to be drained into the South Mine sump. Because of this the water quality cannot be assured and Syncrude directs all water from the south mine sump into the WIP. Water diverted from the South Mine Sump into the WIP annual quantity was not available due to an instrumentation malfunction. AENV reference #276477, October 16th, 2013 the FFT transfer system from East In-Pit to WIP was in operation and an over-pressure condition occurred causing the rupture disc to be activated. As per procedure, approximately 29 Km3 of FFT reported from the rupture disc line to the south mine sump. This release is not expected to have an adverse effect due to the release area water was removed promptly from location and directed to the industrial wastewater control system.

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Gravel Pit Dewatering T-Pit Gravel Pit Dewatering Syncrude “T-Pit” gravel pit dewatering activity is required due to a majority of the gravel is located below the water table. Dewatering is through a pit floor south sump "A" that collects groundwater, surface run-off and then piped to north sump "B" that collects surface run-off water from a nearby reclaimed area. Sump "B" discharge is directed through a transfer pipe, down near the bottom of the escarpment, to a low wetland area and flows through natural drainage approximately one kilometer to the Athabasca River. Although operating approval 26-02 requires T-Pit discharge quarterly sampling, Syncrude samples daily when discharging to ensure there is no adverse effect to the environment. Chloride concentrations remained well below the limit throughout the year. There was no impact on the vegetation observed by visual inspection at the transfer pipe discharge location. T-Pit dewatering system groundwater and surface water run-off discharge annual quantity was 0.967 Mm3. G-Pit Gravel Pit Dewatering The majority of the “G-Pit” gravel pit area was mined out in 2012. There are only two inactive wells that remain DP08-01 and DP08-02. Regular monthly monitoring and annual reporting will continue as required by Water Act License 00235309-00-02 until groundwater wells DP08-01 and DP08-02 are abandoned. There are no plans to use these wells for dewatering purposes or to drill any more wells in the “G-pit” area.

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Industrial Wastewater Control System Mildred Lake Industrial wastewater control system consists of a number of reservoirs of Fine Fluid Tailings (FFT), Mature Fine Tailings (MFT), industrial process wastewater, industrial runoff with interconnecting systems of pumps, pipelines, channels, and seepage collection return systems. Mildred Lake site industrial wastewater containment reservoirs are: Mildred Lake Settling Basin (MLSB), Southwest Sand Storage Facility (SWSS), East Inpit (EIP), Base Mine Lake (BML), South West Inpit (SWIP), and North Mine South Pond West (NMSPW). Figure 1: Mildred Lake Plant process water systems

During 2013, coarse tailings were placed in SWSS, EIP, NMSPW, and SWIP. Volume of tailings material from primary extraction (Plant 5) was 132 Mm3 and tailings material from secondary extraction (Plant 6) was 21 Mm3. After solids removal, the water input to the industrial wastewater control system from tailings annual total was 109 Mm3. During 2013, Composite Tailings (CT) was deposited in SWIP and NMSPW. The CT Plant facility produced CT material from primary extraction tailings and Fine Fluid Tailings taken from SWIP. Annual total of 10.95 Mm3 of CT Slurry was routed to SWIP and 0.35 Mm³ to NMSPW. During 2013, no FFT was transferred to Base Mine Lake. The total FFT inventory in Base Mine Lake at year-end was 191 Mm3 and year-end pond elevation of 308.49. Effluent Pond inputs are the oily water sewer API separator, Plant 5 emergency dump pond, stripped sour water, vacuum distillation unit, cooling towers blow down, upgrading area surface runoff and mine surface drainage. Water pumped from the Effluent Pond to MLSB annual total was 47 Mm3.

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Aurora North oil sands mine and extraction facility is located 35 km to the north. Mildred Lake site process water is routed through the intersite pipeline to Aurora for extraction and tailings slurry purposes. Process water routed to the Aurora site annual total was 21 Mm3 and approximately 5 Mm3 was returned to the Mildred lake site in the Aurora froth product. MLSB, SWIP capacity allows for sufficient settling of solids and process water from the surface zone is routed to the Recycle Pond for re-use. Recycle water provides approximately 85% of Syncrude Plant requirements. Water recycled from the industrial wastewater control system annual total was 168.5 Mm3. Southwest Sand Storage Facility Southwest Sand Storage (SWSS) Facility is located approximately 8 km southwest of the Extraction Plant in the southwest corner of Lease #17 and encompasses an area of approximately 30 km2 with a current perimeter length along the toe of the structure of approximately 20 km. Syncrude deposited approximately 21 Mm3 of tailings and the total cumulated volume at the SWSS facility is approximately 399 Mm3. Fine tailings and process water accumulated from sand placement was transferred to the South West In-Pit (SWIP) storage facility through dredges and a pipeline in Cell 32. The fluid level in the SWSS Facility was approximately 390.84m elevation by year-end. The minimum 2m freeboard and 150m beach above water containment criteria were maintained. Estimated volumes of Mature Fine Tailings and Recycle Water contained within the SWSS Facility are summarized in Table 7. Coke Deposition Coke produced during the upgrading of bitumen is mixed with process water to form slurry. Since January 2000, this coke slurry has been discharged into the MLSB starting at the south end of the west side of the basin and progressing north and easterly as the deposit grows. Yearly sampling campaigns will continue to track and reconcile the volume of the coke deposit to the amount of coke produced in the upgrading operation. Process water in the slurry runs off the coke deposit and mixes with the process water in the MLSB. Coke deposited in MLSB total annual quantity is summarized in Table 4.

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Water Management and Conservation at Mildred Lake Syncrude’s water management practices are based on the objectives of minimizing diversion of water from the Athabasca River, maximizing reuse of process affected water and managing the storage of process-affected water. Annual intensity was 2.76 m3 of river water per m3 Syncrude Sweet Premium (SSP) oil produced.

Year River Water Diverted

Mm3 SSP Produced

Mm3 River Water Diverted m3 /

SSP Produced m3 2009 37.49 16.48 2.28 2010 33.98 17.24 1.97 2011 38.46 16.84 2.28 2012 39.56 16.83 2.35 2013 43.35 15.71 2.76

Annual total river water diversion quantity increased 9.6% when compared to the previous year due to:

Base Mine Lake project reclamation activity water 5.96 Mm3. Sandhill Fen project reclamation activity water 0.22 Mm3 Demineralized water demand increased due to more live steam usage in extraction. Municipal purpose potable water decreased 3.6% when compared to the previous year.

Approximately 85% of the diverted river water was used in the boilers to produce high-pressure steam and as make-up water in the cooling towers. Other diverted river water uses include utility water, firewater, gland-seal water, potable water and reclamation water. Water Conservation Initiatives A monthly score card tracks the river water diversion for industrial use and municipal use. Syncrude continually improves the water conservation management strategy and identifies opportunities for further reducing river water diversion requirements. Sulphur Emissions Reduction Project is using approximately 1 Mm3 of reverse osmosis units reject water that would have otherwise required river water. Recycle of industrial wastewater provides approximately 85% of Syncrude Plant requirements.

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Aurora Water Management Summary 4.2.24(a) In 1998, Aurora dewatering system was initially established to drain shallow groundwater and surface water away from the areas of the East Pit mine excavation and the Aurora Settling Basin starter dike construction. Aurora clean dewatering system drained shallow groundwater and surface water away from the areas of the East Pit mine excavation until December 2002. Water was collected and routed through a series of ditches to a point that flowed onto Albian Sands’ Muskeg River Mine lease, through portions of the old Alsands Drainage system and into a sedimentation pond that discharged to the Muskeg River. Water quality from the dewatering system was monitored by regular sampling of this sedimentation pond discharge. Water quality in the receiving stream (Muskeg River) was also monitored regularly, upstream and downstream of the sedimentation pond discharge. In 2003, Aurora Clean Water Discharge Ditch (CWD) was commissioned that reduced surficial groundwater flow into the mine and maximized clean water directed to the Muskeg River. This CWD was designed so that the base was at the top of the Pleistocene clay, thus effectively intercepting the clean water flowing through the surficial aquifer from the Fort Hills into the East Pit. On the east end of the CWD a large sedimentation pond directed the clean water through an underground pipeline to Stanley Creek. In 2005, construction on the East Pit Passage (EPP) began to replace the clean water ditch and intercept surface water draining to the mine. This ditch ran from west to east with three finger ditches extending south to assist dewatering an increased area and two ponds (1-03 and 1-04) further west that pumped to the ditch. Water then accumulated in a pond on the east end and was pumped through a pipeline to Stanley Creek. EPP commenced pumping in June of 2006 and was decommissioned in January 2008. EPP was then a dirty water pond until it was removed during mining. In 2006, a portion of Stanley Creek was relocated by a pipeline to direct the Stanley Creek around the mine area. During 2006, a six-month test was conducted to determine if the basal aquifer water was suitable for discharge to the environment. Water chemistry was acquired to determine the effectiveness of running basal aquifer water through an aeration pond that was constructed in the West end of the old CWD. Aerated basal water met the discharge requirements and was authorized June 2007 as per Syncrude Operating Approval 26-02-00. Aerated basal water was first discharged to the environment in March 2008. In 2007, construction began on the East Mine Seepage Curtain (EMSC), a series of five horizontal and twelve vertical dewatering wells that cover a total distance of 4250 meters along the north end of East Pit. EMSC intercepts surficial aquifer water before entering the mine. EMSC system began discharging clean water in August 2008. EMSC pumps directly to the environment as suspended solids are not a concern. In 2009, EMSC became fully operational and replaced EPP and pond #1-04 as the main surficial aquifer water collection system for East Pit. In 2008, Syncrude relocated the clean water final discharge points to the environment at the EMSC Inlet and EMSC Outlet. In 2009, a pipeline was completed to direct water to the environment from Centre Pit sedimentation pond #1-05 to the EMSC. In 2010, this pipeline was extended to discharge directly to the EMSC Inlet system discharge. This returned EMSC to a closed system and increases the efficiency of both systems by allowing for higher flow rates. EMSC system was down for maintenance from May 2012 and was returned to the clean water system discharge April 2013.

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In the Centre Pit area the surficial aquifer is thinner, in general, than in the East Pit area. Multiple ditch systems are located in Center Pit to collect water with greater efficiency rather than the single larger systems that were used in East Pit. Center Pit dewatering was conducted for reclamation, overburden removal prior to mining. Centre Pit area surficial water is directed to main collection sedimentation pond #1-05 and pumped via pipeline to the EMSC Inlet system final discharge to the environment. In 2009, Syncrude was limited in the discharge of Basal water due to the mining out the DP Aeration Pond. New aeration technology was approved and individual aeration units are used at each DP well. This has significantly reduced the quantity of basal groundwater stored in tailings. Aurora minimizes number of DP wells pumping as to sustain mine operations. Aurora clean water discharge system benefits are:

A reduction of the operations impact on the surrounding Muskeg River watershed, by returning intercepted waters back to the environment.

Improved mining operation and dewatering through this primary surficial water interception. Improved ability for Aurora to steward to water diversion limit of 20.13 Mm3 per year Syncrude

water act license 00048398. A net reduction of waters being diverted into tailings storage, thus reducing the demand for

increased capacity of the Aurora Tailings Pond and inpit tailings structures. During 2013, Syncrude Aurora discharged 3.60 Mm3 of surficial water and 2.34 Mm3 of basal water for a total discharge to the environment of 5.94 Mm3. Please refer to Appendix G - Figure 2.3 Aurora Surface Water Diversion (appended) Figure 2: Aurora North Plant water flow outline

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Table 1: Aurora Clean Water Discharge quantity

2013 EMSC

Discharge Inlet m3

EMSC Discharge Outlet

m3

Total m3

Jan 101,748 86,363 188,111 Feb 157,696 174,886 332,582 Mar 163,034 202,852 365,885 Apr 234,424 322,845 557,269 May 310,089 298,791 608,880 Jun 213,456 214,881 428,337 Jul 189,078 298,860 487,938 Aug 252,267 260,496 512,763 Sep 279,749 210,110 489,858 Oct 427,757 323,968 751,725 Nov 372,220 322,424 694,644 Dec 181,985 336,200 518,186 Total 2,883,503 3,052,676 5,936,177

Figure 3: Aurora EMSC Inlet & EMSC Outlet total discharge water quantity

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Cut-off Wall Prior to the installation of the cut-off wall approximately 4 Mm3/year of clean water was seeping into the tailings toe ditch. A cut-off wall was installed in 2004 along the north perimeter reduce the inflow of natural surficial water to the Aurora Settling Basin (ASB) In 2004, a total 4200 meters of cut-off wall at an average depth of 8.5 meters was installed. There was 3760m of cut-off wall installed parallel to the toe of the dyke from 400m south of the CWD to the Ramp 3 Sump and 440m of cut-off wall was installed immediately south of the eastern extremity of the CWD. In 2005, this cut-off wall was extended by 1265 m bringing the wall about 450 m south of the Muskeg River Sump. This structure was dug into approximately one meter of clay below the near surface permeable sand units to create an artificial flow barrier between the Aurora tailings pond and the environment. In 2006, another barrier wall of 1,135 linear meters was tied into the 2004 toe of the dyke cutoff wall at Cell # 57, and ran north along the eastern edge of the East Pit. The wall isolated the Clean Water Ditch sedimentation pond, intersected the southern boundary of the Clean Water (East Pit Passage) sedimentation pond and the area between these infrastructures. In 2007, the 2006 cutoff wall had to be relocated due to a change in the mine pit limits. A 972 linear meter barrier wall was installed approximately 150 meters to the east of the 2006 cutoff wall. Additionally four vertical dewatering wells were installed at the northern end of the wall were the surficial sand thickness became too thick for conventional barrier wall technology. The four wells cover the area between the cutoff wall and the EMSC. In 2009, cutoff wall was extended with sheet piles and approximately 55m was added to the north end of the wall to help prevent excessive seepage at the mine face.

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Industrial Wastewater Control System at Aurora Aurora imported 21.97 Mm3 of process recycle water through the intersite pipeline from Mildred Lake plant site during 2013. Import of warm water is essential to the extraction process. Aurora process recycled 90.66 Mm3 from the Aurora Settling Basin (ASB) during 2013. Course tailings slurry to ASB was 9.94 Mm3; AEPN-E 8.56 Mm3 and AEPN-W 83.97 Mm3. Floatation tailings slurry delivered to ASB 12.96 Mm3 during 2013, Diversion of mine dewatering water streams into the Aurora Settling Basin began in 1999. Development of mine dewatering activities has continued. Industrial runoff system in the extraction plant area collects water within the plant area and routes it to the recycle pond. All waters in the mine dirty water system are diverted via a system of surface water ditches to the ASB, AEPN-E, & AEPN-W. The majority of the mine water was diverted to the AEPN-E during 2013. AEPN-E and the AEPN-W are contained within the Dyke 1 system which consists of an internal drainage system. Seepage water from the internal drains is collected to a series of sumps and pumped back into the AEPN-E. Following operational details describe water management at Aurora. Depressurization (DP) wells

Approximately 29% of DP water was directed to tailings during 2013 o DP-22, DP-31, DP41, DP-60, DP-61, and DP-63 to Tailings

Approximately 20% of the DP water was utilized by Aurora plant process during 2013

o DP-01, DP-13, and DP-58 are directed to the Aurora Plant.

Approximately 51% of DP water was discharged to the environment during 2013. o DP-30, DP-34, DP-35, DP-37, DP-50, and DP-63 were discharged to the environment

after individual well aeration treatment. Aurora Settling Basin (ASB) Ramp 3 Sump, West Seepage, North Seepage and the South Seepage ponds collect water from a

system of toe ditches at the base of the ASB. Water collected in these ponds is pumped into the Aurora Settling Basin.

o Water sources for these volumes are as follows: Mine runoff Surficial aquifer water that is intercepted by ditches Seepage from Intra-orebody aquifers Basal Aquifer DP water Seepage through the Tailings Dyke

o Pond flows are recorded by flowmeters or pump curves.

The following pump configurations are at each location: o Ramp 3 Sump: three diesel pumps o West Seepage: one diesel pump, pumping into the ditch to South Seepage o North Seepage: one electric pump, two diesel pumps. o South Seepage: two electric pumps, three diesel pumps

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Water sources pumped into the ASB perimeter seepage ponds

Muskeg River Sump is located outside of the containment of the dirty water ditches and collects any seepage occurring beyond the ditching system from the tailings dyke. Water collected is pumped to the perimeter ditch and flow is direct to the South Seepage pond.

North Seepage and Ramp 3 collect seepage water and then directed into ASB. Ramp 3 collects seepage water from the ASB as well as the east side of the AEPN-E from 19-

15. Seepage water from 19-15 is pumped to Ramp 3 for accurate water volume tracking. South Seepage collects water from West Seepage, Muskeg River Sump, and mine water from

South East pit. Water collected in this sump pumps directly into the ASB. Aurora East Pit North-East (AEPN-E)

Sumps East 1, and 19-05 are directed into the AEPN-E

o Water sources for these volumes are as follows: Mine runoff Surficial aquifer water that is intercepted by ditches Seepage from Intra-orebody aquifers Basal Aquifer DP water Seepage through the internal drainage system of Dyke 1

o Pond flows are recorded by flowmeters and/or pump curves Water sources pumped into the AEPN-E

Sump 19-05 collect surface runoff and ASB seepage Sump East 1 collects the majority of the mine water from within the Aurora fenceline limits along

with any basal water that is stored in tailings. This water is collected in the East 1 sump and pumps up over Dyke 1 into the AEPN-E. Flow meters and a pump curve are placed on this sump for accurate measurement.

Water sources pumped into the Aurora East Pit North-West (AEPN-W) The only sump directed into the AEPN-W is the 49-04, which collects seepage surface runoff. This

sump flow is measured by a weir system that calculates water volume before entering the AEPN-W.

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Water Management and Water Conservation Initiatives at Aurora Syncrude Aurora North mine discharged 3.60 Mm3 of surficial water and 2.34 Mm3 of basal water for a total of 5.94 Mm3 discharged to the environment during 2013. Surficial Water In 2007, Syncrude installed four bentonite slurry cutoff walls covering a length of over 7.5 km to reduce the inflow of natural surficial water to the Aurora Settling Basin (ASB) and the mining area. In 2009, this cutoff wall was extended with the sheet piles to cover a deeper area where excessive seepage was observed. A differential head up to 4.0m was observed in the standpipes around the cutoff walls that demonstrated the interruption of groundwater flow after 2009. East Mine Seepage Curtain (EMSC) and two ditch and sump systems collect surficial water and prevent it from entering the mine. EMSC system consists of five horizontal wells and twelve vertical wells drilled along the north end of the East Pit that cover a total distance of 4250 m. EMSC system routine maintenance commenced May 2012 and EMSC was returned to clean water discharge April 2013. Syncrude is committed to minimizing the influx of surficial water into onsite storage. Prior to mining the Centre Pit area surficial dewatering was conducted by a series of ditches and sumps that are directed to collection sedimentation pond #1-05 and then pumped to the EMSC Inlet system final discharge to the environment. Sedimentation Pond #1-04 is also directed to the EMSC Inlet system final discharge to the environment. A series of ditches and sumps are directed to collection sedimentation pond called “Puhalski” then directed to the EMSC Outlet system final discharge to the environment. EMSC Inlet system discharged 2.88 Mm3 and EMSC Outlet system discharged 3.05 Mm3 for a total surficial water discharge of 5.94 Mm3 during 2013. Depressurization Well (Basal) Water Syncrude uses individual well inline aeration technology for basal groundwater discharged to the environment since November 2009. This has significantly reduced the quantity of basal groundwater stored in tailings. Additional DP wells are added to the system depending on the quality of the water. Aurora minimizes the number of DP wells pumping to Tailings to sustain mine operations. Five DP wells discharged to the environment during 2013. An additional well DP-63 was added to the clean water system in August 2013. Annual total quantity of aerated basal groundwater discharged to the environment was 2.34 Mm3.

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Volume of liquids discharged to the MLSB and ASB 4.2.24(d)(e)(f)(g) There are several sources discharged to the Mildred Lake and Aurora industrial wastewater control systems (MLSB and ASB). Please see the following tables. Table 2: Volume of Liquid (including solids fraction) to Tailings MLSB

2013 Total Liquid to Tailings

Plant 5 Tails

Plant 6 Tails

Plant 23 Gland

Effluent Pond to Tailings

Aurora from

Recycle Pipeline

Coke cells

Mm3 Mm3 Mm3 Mm3 Mm3 Mm3 Mm3 Jan 13.777 7.236 1.909 0.098 3.843 0.141 0.551

Feb 12.569 6.823 1.679 0.089 3.308 0.072 0.599

Mar 12.099 6.219 1.773 0.098 3.191 0.111 0.708

Apr 11.754 6.040 1.837 0.095 2.982 0.088 0.713

May 12.148 7.420 1.628 0.098 2.245 0.025 0.732

Jun 9.015 6.936 1.331 0.095 0 0.100 0.553

Jul 9.926 5.937 0.998 0.098 2.281 0.053 0.559

Aug 9.503 6.930 1.510 0.098 0.281 0.041 0.643

Sep 10.093 6.873 1.588 0.095 0.790 0.017 0.730

Oct 10.420 6.371 1.750 0.098 1.383 0.038 0.780

Nov 10.595 5.984 1.937 0.095 1.910 0.066 0.603

Dec 11.514 6.925 2.032 0.098 1.830 0.068 0.561 Total 133.414 79.692 19.970 1.154 24.045 0.820 7.731

Table 3: Extraction Inputs to MLSB, SWSS, EIP, SWIP, and NMSPW

The values above represent the water portion of the tailings only. Plant 5 tailings are made up of 86% coarse tailings (approximately 52% water by weight) and 10% stream 73

tailings (approximately 74% water by weight). Plant 6 tailings are approximately 80% water by weight.

2013Plant 5 Water

Runoff Mm³

Plant 6 Water

Runoff Mm³

Effluent to

MLSB

Mm³

January 8.55 1.86 1.14

February 7.33 1.64 1.58

March 7.31 1.71 6.55

April 6.94 1.79 8.36

May 7.97 1.58 4.51

June 7.75 1.30 3.75

July 7.01 0.97 3.84

August 7.75 1.47 3.22

September 7.51 1.54 2.74

October 6.73 1.70 2.61

November 6.36 1.89 4.20

December 8.24 1.98 4.07

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Table 4: Coke Deposited in MLSB

Month 2009 2010 2011 2012

2013

Tonnes Tonnes Tonnes Tonnes Tonnes Jan 173,445 174,135 205,978 213,898 185,791 Feb 151,676 177,231 193,106 213,102 171,623 Mar 172,142 204,598 194,909 160,602 187,341 Apr 138,023 197,274 208,388 201,656 183,055 May 163,034 218,682 203,129 163,224 188,787 Jun 187,113 194,710 212,153 154,641 145,945 Jul 224,950 222,589 215,440 212,983 136,008 Aug 243,042 216,763 214,629 211,157 157,341 Sep 220,551 156,417 160,620 192,997 196,696 Oct 225,981 144,114 145,470 202,369 190,507 Nov 247,537 206,345 176,872 177,745 215,756 Dec 232,798 227,607 208,717 198,160 216,362 Total 2,380,292 2,340,465 2,339,411 2,302,534 2,175,212

Table 5: Reclaimed water from MLSB and pond levels

2013RCW from MLSB

Mm³

Total RCW

Supplied Mm³

MLSB Level

m el.

January 12.73 12.73 348.63

February 11.62 11.62 348.81

March 16.68 16.68 348.82

April 18.46 18.46 348.98

May 15.08 15.08 348.81

June 12.87 12.87 349.14

July 11.20 11.20 349.44

August 13.27 13.27 349.27

September 12.90 12.90 349.30

October 11.67 11.67 349.33

November 13.08 13.08 349.28

December 14.91 14.91 349.22

Year End 164.49 164.49 349.22

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Table 6: Annual quantities of water recycled from MLSB & SWIP

Year Recycle Water from

MLSB and SWIP Mm3

2009 164.5 2010 179.1 2011 169.4 2012 156.6 2013 168.5

Table 7: SWSS Facility Fluids Inventory

2013RCW Inv

Mm³

MFT Inv

Mm³

Fluids Inv

Mm³

January 15.93 49.92 65.86

February 15.72 50.23 65.95

March 16.62 50.64 67.25

April 20.86 51.21 72.06

May 20.43 54.44 74.87

June 24.93 54.47 79.39

July 23.63 54.46 78.09

August 25.33 54.50 79.83

September 23.07 54.37 77.45

October 25.62 55.03 80.66

November 22.29 54.86 77.16

December 20.08 71.90 91.97

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Table 8: Volume of Intersite Recycle water transfer Mildred Lake & Aurora

Table 9: Monthly Tailings Volumes Aurora

2013 Month End

Coarse Tailings Slurry to

ASB Mm3

Coarse Tailings Slurry to AEPN-E

Mm3

Coarse Tailings Slurry to AEPN-W

Mm3

Float Tailings Slurry to ASB

Mm3

Jan 0.00 1.31 6.60 0.98 Feb 0.00 2.34 7.32 1.16 Mar 0.02 0.91 8.21 0.85 Apr 0.18 1.40 7.64 1.43 May 0.00 0.69 8.47 1.17 Jun 0.00 0.00 6.91 1.00 Jul 0.13 0.39 6.56 0.72 Aug 0.42 0.00 7.63 1.25 Sep 2.25 0.04 5.44 1.15 Oct 3.24 0.81 4.51 1.01 Nov 1.92 0.68 6.40 1.13 Dec 1.79 0.00 8.29 1.11 Total 9.94 8.56 83.97 12.96

Tailings slurry (water plus solids fraction) Aurora Settling Basin (ASB); Aurora East Pit North-East (AEPN-E); Aurora East Pit North-West (AEPN-W)

2013

RCW from Base Plant

to Aurora

Mm³

Water in Froth from

Aurora to Base Plant

Mm³

January 2.14 0.43

February 2.11 0.41

March 2.09 0.44

April 2.13 0.51

May 1.92 0.44

June 1.56 0.37

July 1.46 0.33

August 1.52 0.41

September 1.46 0.40

October 1.80 0.43

November 1.44 0.45

December 1.51 0.48

Year End 21.13 5.10

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Table 10: Volumes diverted internally at Aurora

2013 South

Seepage to ASB

Ramp 3 to ASB

North Seepage to ASB

19-05 Sump to AEPN-E

East 1 Sump to APEN-E

49-04 to AEPN-W

Monthly Recirculated

Process Affected Water

Volume (ASB)

Monthly Recirculated

Process Affected

Water Volume (AEPN-E and

AEPN-W)

Monthly DP Water to Plant

(Captured Water)

MONTH m3 m3 m3 m3 m3 m3 m3 m3 m3

Jan 314,031 317,722 179,612 216,225 650,009 108,126 811,365 866,234 90,692

Feb 258,629 269,602 193,057 195,300 516,416 333,787 721,288 711,716 71,218 Mar 286,363 307,607 240,126 180,000 391,868 233,876 834,096 571,868 114,603 Apr 395,445 374,692 256,203 209,250 653,263 253,799 1,026,340 862,513 75,042 May 331,804 499,475 219,327 216,225 753,067 133,629 1,050,606 969,292 71,757 Jun 372,840 548,100 254,791 190,000 728,406 202,044 1,175,731 918,406 72,256 Jul 321,220 506,970 196,296 180,000 872,288 211,644 1,024,486 1,052,288 74,183 Aug 310,047 457,639 187,083 216,225 784,096 204,504 954,769 1,000,321 75,776 Sep 315,972 425,341 176,609 150,222 630,576 192,072 917,922 780,798 71,229 Oct 377,693 471,030 219,678 160,000 749,093 222,174 1,068,401 909,093 75,140 Nov 374,547 406,752 160,819 209,250 443,692 172,668 942,118 652,942 71,721 Dec 503,191 343,967 131,777 216,225 375,866 145,785 978,935 592,091 73,487

Total 4,161,782 4,928,896 2,415,378 2,338,922 7,548,640 2,414,108 11,506,056 12,301,670 937,103 Process recirculated volume (reporting to tailings only) (m3) 23,807,726

Net Volume (reported to tailings) (m3) 10,270,032 Net Volume (reporting to tailings and the Aurora plant) (m3) 11,207,135

Water volumes diverted internally to the Aurora Settling Basin (ASB), Aurora East Pit North - East (AEPN-E), Aurora East Pit North - West (AEPN-W) from the perimeter sumps corrected for tailings dyke seepage, also included are the DP well volumes diverted to Aurora Utilities Water Treatment Plant Additional notes:

Seepage volumes for ASB are calculated from data from Ramp 3 Sump by using chloride concentration and input water from the 19-15 seepage pond calculation.

For volume calculations, the estimated % of Settling Basin seepage, which contributes to the volume

measured, is determined by analyzing chloride ions found in Ramp 3 Sump. This chloride concentration is then compared to tailings water, which has a known concentration of chloride, varying between 300 to 400ppm, and fresh water, which has a very low level of chloride. A ratio is calculated and the % of process affected (Tailings Seepage) water is determined.

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Table 11: Monthly free water pond elevations Aurora

2013 Month End

ASB Pond Level meters above sea

level (masl)

AEPN-E Pond Level meters above sea level

(masl)

AEPN-W Pond Level meters above sea level

(masl)

Jan 343.41 254.13 251.78 Feb 343.73 254.28 253.44 Mar 343.87 254.55 254.67 Apr 343.79 256.38 255.20 May 343.50 256.38 259.59 Jun 343.78 257.26 260.50 Jul 343.75 259.13 261.59 Aug 343.98 258.80 261.60 Sep 344.56 258.08 263.17 Oct 345.15 258.10 263.22 Nov 345.27 258.73 263.50 Dec 345.74 259.02 263.43

Table 12: Monthly volumes mature fine tails (MFT), fine fluid tails (FFT) Aurora

2013 Month End

ASB MFT Volumes

(Mm3)

ASB FFT Volume (Mm3)

AEPN-E MFT

Volumes (Mm3)

AEPN-E FFT

Volume (Mm3)

AEPN-W MFT

Volumes (Mm3)

AEPN-W FFT

Volume (Mm3)

Jan 92.59 47.65 13.55 18.74 9.12 0.70

Feb 92.71 49.33 13.74 18.10 9.84 0.80

Mar 92.81 49.94 13.79 18.41 8.43 0.95

Apr 92.99 49.14 13.86 22.90 8.93 0.00

May 93.12 46.98 15.14 15.37 9.68 2.64

Jun 82.60 47.25 15.82 16.63 9.68 2.38

Jul 82.69 46.18 16.42 20.27 9.68 1.11

Aug 82.87 47.10 19.30 16.59 7.42 0.00

Sep 83.16 49.75 21.06 13.09 6.12 0.00

Oct 83.58 51.74 21.28 12.32 6.29 1.16

Nov 84.08 50.71 17.50 20.82 4.71 0.22

Dec 83.93 52.90 20.57 18.52 2.35 0.00

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Table 13: Monthly volumes recycle water from ASB to Aurora Process

Month Recycle Water from ASB to

Aurora Process Mm3

Jan 8.13 Feb 7.58 Mar 7.59 Apr 7.58 May 7.14 Jun 6.74 Jul 7.05 Aug 7.13 Sep 6.88 Oct 8.05 Nov 7.82 Dec 8.97 Total 90.66

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Table 14: Vacuum truck disposals to MLSB and ASB during 2013 Item # Industrial Wastewater Loads from Vacuum Trucks Recycled On-Site

m3 Disposed On-Site

m3

1 Calcium Hydroxide Slurry - 3,887 2 Carbon Waste - 352 3 Chemical / Plant process water mixtures - 4,749 4 Coke / Water mixtures - 12,721 5 Drilling Mud - 15,670 6 Kitchen Liquid Grease - 240 7 Resin Beads from Water Treatment Plant - 529 8 Sand/ Gravel/ Mining Material/ Water Slurry - 164,490 9 Tank Bottom Sludge - 2,507

10 Hydrocarbons from Plant / Site / Research 1,917 - 11 Waste Hydrocarbon Mixtures from Plant / Site - 2,518 12 Wastewater from Plant / Site - 7,830

Total 1,917 215,494

Item #

Descriptions

1 Calcium Hydroxide Slurry and lime-type slurries from Sulphur Emissions Reduction Project, Plant 29 are disposed at the Mildred Lake Settling Basin.

2 Carbon waste in a water solution from the amine plant or potable water plant is disposed at the Mildred Lake Settling Basin.

3 Chemical/ Plant process water solutions consists of oily and other plant water plus solids collected from sumps, surface accumulation and plant processes and are disposed at the Mildred Lake Settling Basin or the Aurora Settling Basin.

4 Coke / Water solutions generated during process equipment cleaning and coke fines filter backwash from the fertilizer plant are disposed at the Mildred Lake Settling Basin or the coke cell also located at Mildred Lake Settling Basin.

5 Drilling mud and cuttings from core hole and other drilling projects are disposed at the Mildred Lake Settling Basin or the Aurora Settling Basin.

6 Kitchen grease sump water is collected and disposed at the Mildred Lake Settling Basin.

7 Resin beads from ion-exchange trains within the water treatment plant are slurried with water and disposed at the Mildred Lake Settling Basin.

8 Sand, gravel and water type mixtures (mostly road run-off) are disposed at the Mildred Lake Settling Basin or the Aurora Settling Basin.

9 Material generated during the cleaning and maintenance of various tanks. This mixture of water, hydrocarbons and sludge is disposed at the Mildred Lake Settling Basin or the Aurora Settling Basin.

10 Hydrocarbon mixtures from the plant, site or research facilities are offloaded at the API recycle system for hydrocarbon recovery.

11 Slurry collected from around site which consists of mainly bitumen or oily waters are disposed at the Mildred Lake Settling Basin or the Aurora Settling Basin.

12 Mixtures from the plant or site which is mainly water or liquids are disposed at the Mildred Lake Settling Basin or the Aurora Settling Basin.

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Mildred Lake & Aurora Domestic Wastewater Treatment System Syncrude Mildred Lake domestic wastewater (sanitary sewage) treatment system has capacity to meet demand during major plant shutdowns activities when maximum personnel are onsite. Mildred Lake domestic wastewater treatment system consists of a collection system, gravity driven sewage treatment lagoon facility, comprised of two anaerobic cells (one stand-by), two mechanically aerobic cells and one sedimentation cell. Treated effluent is monitored and discharged to the Athabasca River. Mildred Lake domestic wastewater treated effluent annual total discharged to the Athabasca River was 272,852 m3. Mildred Lake domestic wastewater system operated within approval limits. Syncrude Aurora North Plant domestic wastewater system consists of a collection system, lift station, a flow equalization / settling tank, a Rotating Biological Contactor (RBC), a secondary clarifier and a treated effluent disinfection system. Due to concerns with CBOD and TSS results exceeding discharge limits to the Aurora Settling Basin, all treated wastewater from the Aurora domestic wastewater system is collected and trucked to the inlet of the Mildred Lake domestic wastewater plant for further treatment since January 2009. Aurora North Plant domestic wastewater treated effluent collected and trucked to the inlet of Mildred Lake domestic wastewater plant for further treatment annual total was 26,857 m3. Further information regarding Mildred Lake and Aurora North Plant domestic wastewater treatment systems are available in the annual domestic wastewater report submitted to AENV as per Syncrude operating approval 26-02 section 4.4.18.

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Parameter Data MLSB, SWSS and Beaver Creek 4.2.24(b) Table 15: Parameter data Seepage Control Pond, Beaver Creek at Highway 63 and SWSS Seepage Water 4.2.17(a, c, d)

SCP-1 TBC-3 SWSS-DECANT MLSB Seepage

Control Pond Beaver Creek at

Hwy 63 SWSS Seepage

From Decant 11-Jul-13 28-Jul-13 25-Jul-13

Parameter Units Result Result Result Alkalinity, Total (as CaCO3) mg/L 333 302 552 Aluminum (Al) mg/L 0.023 <0.010 0.013 Ammonia-N mg/L < 0.05 0.1 5.2 Antimony (Sb) mg/L < 0.0004 < 0.0004 0.00152 Arsenic (As) mg/L 0.00318 0.00072 0.00254 Barium (Ba) mg/L 0.0666 0.086 0.154 Beryllium (Be) mg/L < 0.0005 < 0.0005 < 0.0025 Bicarbonate (HCO3) mg/L 408 368 647 Boron (B) mg/L 0.516 0.0273 1.85 Cadmium (Cd) mg/L < 0.0001 < 0.0001 < 0.0001 Calcium (Ca) mg/L 44.7 120 7.89 Dissolved Inorganic Carbon mg/L 55.8 79.4 110 Carbonate (CO3) mg/L < 5.0 < 5.0 13.3 Chemical Oxygen Demand mg/L 196 50 225 Chloride (Cl) mg/L 64.1 122 546 Chromium (Cr) mg/L 0.00054 < 0.0004 0.0005 Cobalt (Co) mg/L 0.00058 0.00021 0.00465 Conductivity (EC) uS/cm 873 1090 3560 Copper (Cu) mg/L 0.00075 < 0.0006 < 0.0006 Total Kjeldahl Nitrogen mg/L 10.5 0.51 10.5 Dissolved Organic Carbon mg/L 78.7 40.5 47.6 Hardness (as CaCO3) mg/L 166 393 40.2 Hydroxide (OH) mg/L <5 <5 <5 Ion Balance % 89.9 93.7 101 Iron (Fe) mg/L 0.938 0.133 < 0.05 Lead (Pb) mg/L 0.00016 < 0.0001 < 0.00025 Magnesium (Mg) mg/L 13.3 22.7 4.97 Manganese (Mn) mg/L 0.235 0.132 0.054 Mercury (Hg) mg/L < 0.0001 < 0.0001 < 0.0001 Molybdenum (Mo) mg/L 0.00081 0.00013 0.115 Naphthenic Acids mg/L 4.6 < 1.0 61 Nickel (Ni) mg/L 0.00344 0.00081 0.0103 Nitrate+Nitrite-N mg/L < 0.071 < 0.071 < 0.071 Nitrate-N mg/L < 0.05 < 0.05 < 0.05 Nitrite-N mg/L < 0.05 < 0.05 < 0.05 pH pH 8.22 8.14 8.48 Phenols (4AAP) mg/L 0.0324 <0.001 0.0172 Potassium (K) mg/L 3.36 8.98 12.5 Selenium (Se) mg/L < 0.0004 < 0.0004 0.00777

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SCP-1 TBC-3 SWSS-DECANT MLSB Seepage

Control Pond Beaver Creek at

Hwy 63 SWSS Seepage

From Decant 11-Jul-13 28-Jul-13 25-Jul-13

Parameter Units Result Result Result Silver (Ag) mg/L < 0.0002 < 0.0002 < 0.0002 Sodium (Na) mg/L 159 54.1 725 Strontium (Sr) mg/L 0.276 0.325 0.317 Sulfate (SO4) mg/L 30.5 104 413 Total Dissolved Solids mg/L 709 763 2740 Thallium (Tl) mg/L < 0.00005 < 0.00005 < 0.00025 Tin (Sn) mg/L < 0.0002 < 0.0002 < 0.0005 Titanium (Ti) mg/L 0.00146 < 0.0003 0.0015 Uranium (U) mg/L 0.00047 0.00016 0.00968 Vanadium (V) mg/L 0.001 0.0002 0.0021 Zinc (Zn) mg/L 0.0027 < 0.001 < 0.005 Total Organic Carbon mg/L 77.9 41.2 62.5 Total Suspended Solids mg/L 25 <3 144 Luminescent Bacteriological EC 50 (15min) % >100 >100 >100 Luminescent Bacteriological EC 50 (5min) % >100 >100 >100 Benzene mg/L < 0.0005 <0.0005 < 0.0005 Toluene mg/L < 0.0005 <0.0005 <0.0005 Ethylbenzene mg/L < 0.0005 <0.0005 <0.0005 Xylenes (Total) mg/L < 0.00071 < 0.00071 < 0.00071 Table 16: Comparison of Ionic Ratios for Selected Surface Waters (Mildred Lake site)

Concentrations meq/l

Sample

Date Na/Cl Na/(Ca+Mg) (Ca+Mg)/HCO3 Major Cations

Major Anions Cation/Anion

MLSB Surface Water 6-Jun-13 2.43 16.32 0.18 35.26 34.22 1.03 MLSB Seepage Control Pond 25-Jul-13 3.83 2.08 0.50 10.33 9.13 1.13 Beaver Creek at Hwy 63 28-Jul-13 0.68 0.30 1.30 10.45 11.64 0.90

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MLSB Parameter Data 4.2.24(b) Table 17: MLSB Parameters §4.2.17(b)

Parameter Units MLSB Zone1

MLSB Zone2

MLSB Zone3

Date 6-Jun-13 6-Jun-13 6-Jun-13 Depth 1 m 22 m 32 m Elevation (AMSL) (m) 348 327 317 pH 8.18 8.19 8.22 Electrical Conductivity uS/cm 3280 4010 4110 Total Dissolved Solids % by wt. 0.2 0.26 0.26 Total Solids Content g/100g <0.25 69 78 Dissolved Organic Carbon mgC/L 46 50 48 Dissolved Inorganic Carbon mgC/L 130 250 250 Total Carbon (C) mgC/L 176 300 298 Phenols mg/L 0.027 0.035 0.038 Chemical Oxygen Demand mg/L 460 280 250 Chloride mg/L 480 640 740 Carbonate (CO3) mg/L 10 25 27 Bicarbonate (HCO3) mg/L 678 1410 1430 Sulphate mg/L 460 6.9 5.7 Calcium mg/L 22.0 12.4 8.6 Magnesium mg/L 11.1 9.9 8.1 Sodium mg/L 756 938 990 Potassium mg/L 14.6 14.4 11.5 Nitrate mg/L 0.012 0.019 0.009 Nitrite mg/L <0.003 0.021 0.007 Hardness (as CaCO3) mg/L 101 72 55 Ammonia mg/L 14.0 9.6 9.0 Aluminum mg/L 5.6 2.9 4.0 Arsenic mg/L 0.0086 0.018 0.0137 Boron mg/L 2.0 2.8 2.99 Cadmium mg/L 0.000061 <0.00005 0.000093 Copper mg/L 0.012 0.008 0.00553 Zinc mg/L <0.003 0.059 0.060 Chromium mg/L <0.005 0.0049 0.0079 Iron mg/L <0.06 0.33 1.2 Mercury mg/L <0.000002 <0.000002 <0.000002 Nickel mg/L 0.0076 0.0050 0.0066 Lead mg/L <0.001 0.00057 0.00193 Tin mg/L <0.005 <0.005 <0.005 Titanium mg/L 0.017 0.034 0.062 Vanadium mg/L 0.017 <0.010 0.012 Luminescent Bacteria (Microtox) IC50 48 - -

Luminescent Bacteria (Microtox) IC20 <11 - -

Benzene mg/L <0.40 <0.005 0.052 Toluene mg/L <0.40 0.016 0.011 Ethylbenzene mg/L <0.40 <0.02 <0.02 Xylenes (Total) mg/L <0.80 0.048 <0.04

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Historical Water Quality MLSB, SWSS Seepage Control & Beaver Creek Mildred Lake Settling Basin (MLSB) seepage waters are collected at the MLSB Seepage Collection Pond. South West Sand Storage (SWSS) Decant Sump, formerly the External Sump, collects seepage waters from SWSS. Since 1986, these sites have been sampled, along with Beaver Creek at Highway 63, to monitor for any potential impact to Beaver Creek and Athabasca River. Parameter historical data greater than detection limits are trended to monitor for changes in water quality over time. Historical trends for Mildred Lake show data are from 2 different sampling programs:

Mildred Lake Settling Basin samples from the surface zone, mid zone and deep zone.

Surface water samples from MLSB Seepage Collection Pond, SWSS seepage Decant Sump and Beaver Creek at Highway 63.

Historical Water Quality MLSB (Please refer to Appendix A: Trends A1 to A17) Major inputs into the settling basin include Stream 73 middlings (fine tails), Plant 6 tails (froth treatment tailings), three petroleum coke sluice lines and the effluent pond outflow. Relative to 2012, there has been a downward trend in ammonia concentrations in the surface zone. Presently, concentrations are typically between about 15 and 20 mg/L range. This suggests improved operating performance of some of the upgrading units (e.g. sour water strippers) which contribute wastewater to the MLSB. Overall salinity levels have been fairly consistent over the last 10 years. Chloride levels are relatively stable and range between about 400 and 500 mg/L in the surface water zone. Organic constituents present, as assessed by chemical oxygen demand (COD) and phenols, have also remained consistent relative to past years. In summary, process water concentrations of inorganic and organic constituents did not show significant change compared to the recent past. Historical Water Quality MLSB seepage collection pond, SWSS decant sump, & Beaver Creek (Please refer to Appendix B: Trends B1 to B16) MLSB is surrounded by toe ditches which collect runoff and seepage water and directs it either to the Seepage Collection Pond, or to the Recycle Pond. All water collected in the Seepage Collection Pond is pumped back into the MLSB. Concentration trends have decreased for metals, organics, and inorganics with the exception of iron at MLSB Seepage Collection Pond. Seepage from the west side of the SWSS is routed through a series of surface ditches that ultimately deposit SWSS seepage water into the MLSB via the Effluent Pond. Seepage from the east side of the SWSS is routed through surface ditches to the Northwest quadrant of the base mine and pumped to the West In-Pit. Since 2010, SWSS decant sample location was changed. Formerly the discharge line was used for beaching sand and tailings water. Extraction industrial wastewater is now directed from three lines. Source of this water is different and likewise the characteristics which are similar with the SWSS conversion project. Concentration trends have decreased for metals, organics, and inorganics at SWSS decant sump.

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On the Syncrude lease, immediately below the MLSB Lower Seepage Collection Dam, the northeast portion of Beaver Creek begins and follows the original streambed to the Athabasca River. Water chemistry at Beaver Creek has remained generally consistent with historical trends. Monitoring is on-going at the Lower Beaver Creek Ecological Risk Assessment as mentioned in the following section. Concentration trends have remained stable for metals, organics and inorganics at Beaver Creek. Historical Comparisons of Ionic Ratios: MLSB Surface Water, Seepage Control Pond, Beaver Creek (Please refer to Appendix C: Trends C1 to C4) Three ratios, Na/Cl, (Ca+Mg)/HCO3 and Na/(Ca+Mg), were calculated for MLSB Surface Water, MLSB Seepage Control Pond, and Beaver Creek. Trends demonstrate that overall the calculated ionic ratios have remained consistent with previous years for all three sampling locations. Most importantly there have been no changes or significant fluctuations at Beaver Creek.

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Lower Beaver Creek Ecological Risk Assessment (ERA) Summary The following provides an executive summary of the Lower Beaver Creek ERA study for 2013 submitted on March 30, 2014. Golder Associates Ltd. (Golder) was retained by Syncrude Canada Ltd. (Syncrude) to collect water and sediment quality data as per the recommendations provided in the Beaver Creek Ecological Risk Assessment (Golder 2004). The recommendations were provided to ensure that risk management conclusions for Beaver Creek remained the same as those presented in that ERA; that is, there is some evidence for risk to benthic invertebrates immediately downstream of the lower seepage dam, but no risks to wildlife populations, fish or amphibians that use Beaver Creek. On the basis of these conclusions, active mitigation of seepage from the wastewater control system was not required. Beaver Creek ERA report recommended a three-year sediment and water quality study from 2004-2007 which ensured that the risk management conclusions remained valid. However, in 2008, Syncrude requested Golder to continue to assess and document surface water quality and toxicity. Subsequently, it was agreed that the two primary goals for Syncrude to study in 2009 at the Beaver Creek are to evaluate the environmental health of the creek at the site closest to the dam and at the point of discharge; and to determine whether sources (such as native bitumen outcroppings) other than seepage from the Mildred Lake Settling Basin (MLSB) are contributing to the elevated levels of naphthenic acids and chloride in the upper reach of the creek. Also, an amphibian field study to provide information on frog population and a comparative analysis of all available benthic invertebrate data in similar creeks was undertaken. In 2010, Golder continued on regular monitoring of water quality, environmental health of Beaver Creek, toxicity and provided a comparison to previous years. In 2011and 2012, it was indicated that the primary goal of the Beaver Creek study was to continue to monitor the environmental health of the creek at the sites closest to the lower dam and at the point of discharge into Athabasca river. Also, sampling program should comprise total metal analysis and surface water quality analysis. The same primary goal was aimed in 2013 sampling program. The following evaluations were completed to address the above mentioned goals for 2013 sampling program:

Multi- season surface water chemistry sampling were established at various monitoring locations along the creek and toxicity testing on rainbow trout and fathead minnow, and Frog Embryo Teratogenesis Assay (FETAX) testing with Xenopus were carried out at specified locations.

Lower Beaver Creek Ecological Risk Assessment Results Water Quality Beaver Creek was found to be hard and alkalinity was high which are not typical of process-affected water characteristics. However, these high physical properties may lead to a decrease in the toxicity of metals within Beaver Creek. TDS and specific conductivity were also high compared to typical surface waters in the region. Seasonal variation in chloride concentration, specific conductivity and naphthenic acid were observed. Metal concentrations were mostly below guidelines and except for chromium and iron in March at BC-3 and BC-8, while aluminum, iron and chromium concentrations were above

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chronic guideline at the same two locations. Generally, concentrations were within the estimated ranges of background concentration in similar streams located in the region. Concentrations of both chloride and naphthenic acids in March and October 2013 were within the long-term range of values reported in previous years. Generally, in 2013, these concentrations were lowest in October and peaked in March. Iron concentrations are slightly lower in 2013 than those observed in 2012, iron appears to be increasing at BC-8. In March and October 2013, concentrations of total metals for which chronic guidelines were exceeded, were mostly within the long-term ranges of values reported in previous years. Although the spatial pattern observed in 2013 for many of the conventional analytes and major ions showed an initial decrease downstream from origin of creek flows, a subsequent increase in concentrations were observed further downstream, towards the confluence, just before the Athabasca River. These variations highlight the potentially high natural variability of metal concentrations in Beaver Creek. Similarly, concentrations of the chemicals of concern (COCs) identified in the risk assessment were plotted to show trends relative to previous conclusions from past reports. Toxicity Tests Fort Environmental Laboratories (FEL) (Stillwater, Oklahoma) conducted Frog Embryo Teratogenesis Assay – Xenopus (FETAX) toxicity analysis in 2013. Over the years, significant differences between the control, and BC-3 and BC-6 have been observed for the mortality and malformation endpoints. In 2013, no significant differences were observed at any of the sites for the mortality endpoint. Effects of larva growth were observed at BC-6 while there is no observed significant effect on larval growth at any of the other sites. Rainbow Trout and Fathead Minnows Hydro-Qual Laboratories Ltd (Calgary) conducted rainbow trout and fathead minnows tests in 2013. The result shows no recorded acute or chronic mortality in any of the rainbow trout and no-sub-lethally toxic effect recorded in fathead minnows toxicity testing, conducted on samples from Beaver Creek. Syncrude will continue to carry out dewatering at the lower dam downstream area of Beaver Creek and is committed to maintaining an environmentally safe eco-system within its operational leases in the region.

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Southwest Sand Storage Conversion Project Parameter Data 3.3.16 Since 2008, Syncrude conducted field pilot programs at the Mildred Lake site to develop Mature Fine Tails (MFT) centrifuge technology. Syncrude future tailing plans include use of centrifuge technology to reduce MFT inventories contained at the SWSS facility. SWSS receives course tails streams produced by the primary extraction (Plant 5). Current and future volumes of froth treatment tails (Plant 6) will be confirmed to the Mildred Lake Settling Basin (MLSB). Potential future deposits of centrifuge cake will be produced using MFT contained within SWSS facility, and located above water on the SWSS beaches and/or in other dedicated disposal areas. December 2010, Syncrude submitted to AENV a plan and schedule to conduct research and monitoring related to the Southwest Sand Storage (SWSS) Conversion Project as per Syncrude operating approval 26-02 subsection 3.3.14. Syncrude has incorporated the sampling described in the 2010 proposal into the SWSS sampling program. Please see the following tables for SWSS monitoring results 2013.

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Table 18: SWSS Parameters 3.3.16 Properties of Surface and MFT Pore Waters from Syncrude South West Sand Storage Pond (SWSS): July 19, 2013*. Surface Elevation: 390.6m (AMSL). Depth of FFT interface: 3.3m.

Water Zone 1

FINE TAILS ZONE (FFT) 2

Depth DL 1 m 3.5 m 8.5 m 10.5 m

General Elevation (AMSL) (m) 390 387 382 380

pH (units) 8.34 7.89 8.04 8.06

Conductivity (uS/cm) 1 3550 3860 4540 4530

Temperature (°C) 18.5 14.6 9.1 8.8

Dissolved Solids (mg/L)** 2500 2500 2800 2800

Total Solids Content (g/100g) 0.055 16.5 38.8 43.7

Alkalinity (Total as CaCO3) (mg.L-1

)** 0.5 570 1178 706 902

Chemical Oxygen Demand (mg.L-1

)** 5 370 200 240 210

Biological Oxygen demand (mg.L-1

) 2 2 - - -

Dissolved Oxygen (mg.L-1

) 3.9 - - -

Redox Potential (mV) 170 - - -

Phenols (ug.L-1

)** 2 20 48 53 55

Tannin & Lignins (mg.L-1)** 0.4 10 2.6 3 2.8

Cyanide (ug.L-1

)** 1 1.3 1.3 3.2 3

MBAS (mg.L-1

)** 0.1 - 0.4 1.9 0.8

Sulphides (mg.L-1

) 0.002 0.062 0.012 <0.01 0.011

Hydrogen Sulphide (mg.L-1

) 0.002 0.065 0.013 <0.01 0.012

Methyl Hg (ng/L) 0.02 0.047 0.026 0.026 0.050

Dissolved Hg (ng/L) 2 4.3 <2 <2 <2

MeHg as % of Dissolved Hg (%) 0.00 1.1 - - -

Arsenic (As) (ug/L) 0.20 3.80 1.62 17.10 7.47

Selenium (Se) (ug/L) 0.20 10.0 1.38 0.70 1.80

Total Pet. Hydrocarbon (mg.L-1

) 2 <2.0 - - -

Bitumen Content (% by wt) - 0.51 2.70 2.22

Naphtha Content (% by wt) <0.01 <0.01 0.01 0.01

Dis. Inorganic Carbon ((mgC.L-1

)** 1 120 150 240 180

Dis. Organic Carbon (mgC.L-1

)** 2.5 40 45 46 43

Naphthenic Acids (mg.L-1

) 5 60 65 80 75 Major Ion Ratio (∑Cat/∑An meq/meq)

1.06 0.94 1.02 1.04

Hardness (as mg/L CaCO3)** 47 46 54 52

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SWSS Parameters (continued)

Water Zone 1


Depth DL 1 m 3.5 m 8.5 m 10.5 m

Acute Toxicity Rainbow Trout LC50 (% by vol) 71 - - -

Rainbow Trout (% survival at 96 hrs) 0 - - -

Daphnia Magna LC50 (% by vol) >100 - - -

Daphnia Magna EC50 (% immobility) 100 - - -

Microtox IC50 (% by vol) 37 - - -

Microtox IC20 (% by vol) <11 - - -

Nutrients o-Phosphate (ugP.L

-1) 3 44 23 54 53

Total Phosphorous (ugP.L-1

) 3 18 19 58 37

Ammonia (mgN.L-1

) 0.5 6.5 5.9 7.9 6.5

Nitrite (ugN.L-1

) 3 <3 7.1 3 10

Nitrate (ugN.L-1

) 3 <3 18 3 9

Nitrate + Nitrite (ugN.L-1

) 3 <3 25 6 19

Total Nitrogen (mgN.L-1

) 0.5 6.3 5.6 4.0 4.6

Major Ions (mg. L-1) i) Cations (mg.L-1)

Na+ 2.5 855 1120 939 1110

K+ 0.3 15.0 13.1 15.2 14.4

Mg++ 0.2 6.3 7.1 7.7 8.0

Ca++ 0.3 8.2 6.4 8.9 7.6

ii) Anions (mg.L-1)

F- 0.05 3.78 3.70 3.90 3.70

Cl- 5 559 1000 690 900

Br- 0.003 0.42 0.63 0.46 BDL

SO4= 2 439 372 63 199

CO3= 0.5 24 43 10 30

HCO3- 0.5 646 1350 841 1040

* Samples from SWSS, July 19, 2013. Station Coordinates (UTM): 6314590N, 453803E. Surface elevation: 390.6 m (AMSL). 1: Free Water Zone above FFT interface (0.45u filter-passing). 2: Fine Tails Pore Water

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SWSS Parameters Trace Metals

Water Zone 1

Depth DL 1 m 3.5 m 8.5m 10.5 m

Elevation (AMSL) (m) 390 387 382 380

Sodium (Na) 2.5 855 1120 939 1110

Potassium (K) 0.3 15.0 13.1 15.2 14.4

Magnesium (Mg) 0.2 6.3 7.1 7.7 8.0

Calcium (Ca) 0.3 8.2 6.4 8.9 7.6

Sulphur (S) 0.2 162 121 26.5 74.8

Aluminum (Al) 1 4600 2910 1270 2270

Antimony (Sb) 0.1 1.6 1.06 1.4 1.63

Arsenic (As) 0.1 3.8 1.62 17.1 7.47

Barium (Ba) 0.1 170 225 200 193

Beryll ium (Be) 1 <1 0.17 <1 0.15

Boron (B) 100 2200 2630 4430 3860

Cadmium (Cd) 0.025 0.089 0.015 <0.015 0.023

Chromium (Cr) 1 <1 4.1 <1 3.8

Cobalt (Co) 0.025 5.3 4.01 1.5 1.48

Copper (Cu) 0.25 4.8 2.08 4.67 1.37

Iron (Fe) 5 0.39 9.90 <5 <5

Lead (Pb) 0.3 0.72 0.46 <0.3 0.45

Lithium (Li) 2.5 160 202 278 276

Manganese (Mn) 0.25 71 33.0 8.7 11.0

Mercury (Hg) 0.002 0.004 <0.002 <0.002 <0.002

Molybdenum (Mo) 0.25 120 136 63.9 119

Nickel (Ni) 0.1 11 11.8 8.1 7.9

Selenium (Se) 0.2 10 1.38 0.7 1.8

Sil icon (Si) 500 8300 7040 5770 6570

Silver (Ag) 0.025 <0.5 0.023 0.054 0.041

Strontium (Sr) 0.25 330 491 474 488

Thallium (Tl) 0.2 <0.2 <0.2 <0.2 <0.2

Thorium (Th) 2 <2 <2 <2 <2

Tin (Sn) 1 <1 <1 <1 <1

Titanium (Ti) 2.5 5.3 18.2 0 17.4

Uranium (U) 0.1 9.9 7.57 9.01 10.6

Vanadium (V) 1 4.3 7.7 <1 10.8

Zinc (Zn) 3 < 5 5.4 < 5 21.8

Zirconium (Zr) 0.5 1.5 13 9.2 11

**Dissolved: 0.45u fi lter-passing. Analyzed using ICP/MS (except As, Se, Sb by Hydride AA and Hg by Cold Vapour

AA) by Maxxam Analytical. Major Elements are expressed in mg/L, Trace Elements are expressed in ug/L.


Dissolved** Major Elements (mg.L-1)

Dissolved** Trace Elements (ug.L -1)

* Samples from Stationin SWSS, July 19, 2013 Station Coordinates (UTM): 6314590N, 453803E. Surface

elevation: 390.6 m (AMSL). 1: Free Water Zone above FFT interface (0.45u fi lter-passing). 2: Fine Tails Pore

Water centrifuged then fi ltered (0.45u fi lter-passing)

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SWSS Parameters BTEX

Depth DL (ug/L) 1m DL (mg/Kg) 3.5 m 8.5 m 10.5 mElevation (m)

(AMSL)348 347 342 337

Benzene 0.4 <0.40 0.005 <0.005 <0.005 <0.005

Ethylbenzene 0.4 <0.40 0.02 <0.02 <0.02 <0.02

Toluene 0.4 <0.40 0.01 <0.01 <0.01 <0.01

o-Xylene 0.8 <0.80 0.04 <0.04 <0.04 <0.04

m & p-Xylene 0.4 <0.40 0.02 <0.02 <0.02 <0.02

Xylenes (Total) 0.8 <0.80 0.04 <0.04 <0.04 <0.04

F1 (C6-C10) 100 <100 10 <10 <10 <10

F2 (C10-C16) 100 160 10 1900 1700 1300

F3 (C16-C34) 200 300 50 11000 9200 7700

F4 (C34-C50) 200 <200 50 4700 4100 3300F4G-SG (Heavy

Hydrocarbons-Grav.) 500 6900 7700 6100

Solids (g/100g) <0.02 15.0 34.7 39.8

Bitumen (g/100g) <0.01 0.51 2.70 2.22

Naphtha (g/100g) <0.01 <0.01 0.01 0.01

Solids and Hydrocarbon Content (g/100g)**

*BTEX analys is (EPA SW-846) by Maxxam Laboratories , Ca lgary, AB us ing GC/MS (MeOH Ext). EPA Method 8260C. HC Fractions by EPA

Method 3510C

** OWS and Naphtha analys is performed at Syncrude Research, Edmonton.

*Samples from Station in SWSS, July 19, 2013. Station Coordinates (UTM): 6314590N, 453803E. Surface elevation: 390.6 m (AMSL).

1) Surface Zone Samples reported as ug per L. FFT SamplesConcentrations reported as mg per Kg of whole FFT.

Concentrations of BTEX VOCs in Surface and FFT Zones in Syncrude's South West Sand Storage Pond (SWSS):

July 19, 2013*. Surface Elevation 390.6m (AMSL). Depth of FFT interface: 3.3m.

Surface Water

Zone1 Fluid Fine Tails 1 (FFT) Zone

VOLATILE ORGANIC COMPOUNDS (VOC's): BTEX COMPOUNDS* (ug/g of FFT)

Hydrocarbon Fractions

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SWSS Parameters VOC

Depth DL (ug/L) 1m DL (mg/Kg) 3.5 m 8.5 m 10.5 mTPH_F1 (C6-C10) 100 <100 12 <12 <12 <12

TPH_F2 (C10-C16) 100 160 40 1900 1700 1300

1,1,1,2-tetrachloroethane 2 <2.0 2 <2 <2 <2

1,1,1-trichloroethane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,1,2,2-tetrachloroethane 2 <2.0 2 2 2 2

1,1,2-trichloroethane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,1-dichloroethane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,1-dichloroethene 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,2,3-trichlorobenzene 1 – 1 <1 <1 <1

1,2,4-trichlorobenzene 1 <1.0 1 <1 <1 <1

1,2,4-trimethylbenzene 0.5 – 0.5 <0.5 <0.5 <0.5

1,2-dibromo-3-chloropropane 80 <1 0.5 <0.5 <0.5 <0.5

1,2-dibromoethane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,2-dichlorobenzene 0.5 <80 0.5 <0.5 <0.5 <0.5

1,2-dichloroethane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,2-dichloropropane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,3,5-trichlorobenzene 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,3,5-trimethylbenzene 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,3-dichlorobenzene 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,3-dichloropropane 0.5 <0.50 0.5 <0.5 <0.5 <0.5

1,4-dichlorobenzene 0.5 – 0.5 <0.5 <0.5 <0.5

2,2-dichloropropane 0.5 – 0.5 <0.02 <0.02 <0.02

2-Butanone (MEK) 140 <140 2.5 <2.5 <2.5 <2.5

2-chlorotoluene – 0.02 <0.02 <0.02 <0.02

2-Hexanone 100 <100 2.5 <2.5 <2.5 <2.5

2-Nitropropane – 0.02 <10 <10 <10

4-chlorotoluene – 0.02 <0.02 <0.02 <0.02

4-Methyl-2-pentanone (MIBK) 50 <50 1 <1 <1 2.1

Acetone 100 <100 2.5 <2.5 <2.5 <2.5

Acetonitrile – 10 <10 <10 <10

Acridine 0.2 <0.20 0.15 <0.15 <0.15 <0.15

Acrolein 400 <400 10 <10 <10 <10

Acrylonitrile 20 <20 0.5 <0.5 <0.5 <0.5

Bromobenzene – 0.005 <0.005 <0.005 <0.005

Bromochloromethane 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Bromodichloromethane – 0.02 <0.02 <0.02 <0.02

Bromoform 0.5 <0.50 0.03 <0.03 <0.03 <0.03

Bromomethane 2 <2.0 0.05 <0.05 <0.05 <0.05

Carbon disulfide 2 <2.0 0.2 <0.2 <0.2 <0.2

Carbon tetrachloride 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Volatile Organics

Surface Water Zone (ug/L)1 Fluid Fine Tails 1 (FFT) (mg/Kg)

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SWSS Parameters VOC (continued)

Depth DL (ug/L) 1m DL (mg/Kg) 3.5 m 8.5 m 10.5 mChlorobenzene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Chlorodibromomethane 1 <1.0 0.02 <0.02 <0.02 <0.02

Chloroethane 1 <1.0 0.02 <0.02 <0.02 <0.02

Chloroform 0.58 0.58 0.02 <0.02 <0.02 <0.02

Chloromethane 2 <2.0 0.03 <0.03 <0.03 <0.03

cis-1,2-dichloroethene 0.5 <0.50 0.02 0.2 0.2 0.2

cis-1,3-dichloropropene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Cyclohexane – 0.5 <0.5 <0.5 <0.5

Cyclohexanone – 25 <25 <25 <25

Dibromomethane 1 <1.0 0.03 <0.03 <0.03 <0.03

Dichloromethane – 0.03 <0.03 <0.03 <0.03

Dichlorodifluoromethane 1 <1.0 0.02 <0.02 <0.02 <0.02

Dicyclopentadiene 2 <2.0 0.2 <0.2 <0.2 <0.2

Ethyl acetate 20 <20 0.5 <0.5 <0.5 <0.5

Ethyl ether – 0.1 <0.1 <0.1 <0.1

Ethyl methacrylate 10 <10 0.25 <0.25 <0.25 <0.25

Hexachlorobutadiene – 0.06 <0.06 <0.06 <0.06

Hexane – 0.2 <0.2 <0.2 <0.2

Iodomethane 8 <8.0 0.2 <0.2 <0.2 <0.2

Isopropylbenzene – 0.04 <0.04 <0.04 <0.04

Methyl methacrylate 0.5 <0.50 0.03 <0.03 <0.03 <0.03

Methyl-tert-butylether (MTBE) 0.5 <0.50 0.3 <0.3 <0.3 <0.3

n-Butylbenzene 1 <1 0.02 <0.02 <0.02 <0.02

Nitrobenzene 0.5 <0.50 25 <25 <25 <25

n-Propylbenzene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

p-Isopropyltoluene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

sec-Butylbenzene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Styrene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

tert-Butylbenzene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Tetrachloroethene 0.5 <0.50 0.02 0.35 0.34 0.35

Total Trihalomethanes 2 <2 0.02 <0.02 <0.02 <0.02

trans-1,2-dichloroethene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

trans-1,3-dichloropropene 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Trichloroethene 0.5 <0.50 0.02 0.11 0.093 0.093

Trichlorofluoromethane 0.5 <0.50 0.01 <0.01 <0.01 <0.01

Vinyl chloride 0.5 <0.50 0.02 <0.02 <0.02 <0.02

Methanol – 0.5 <0.5 <0.5 <0.5

Ethanol 1 <1.0 1 <1 <1 <1

n-Propanol – 1 <1 <1 <1

Isopropanol – 1 <1 <1 <1

n-Butyl Alcohol – 1 <1 <1 <1

Isobutanol – 1 <1 <1 <1

Volati les by modified headspace US EPA Protocol (Method 8260C) // GC/MS analyses performed by Maxxam Analytics , Ca lgary, AB.

* Samples from Station in SWSS, July 19, 2013. Station Coordinates (UTM): 6314590N, 453803E. Surface elevation: 390.6 m (AMSL).

1) Surface Zone Samples reported as ug per L. FFT SamplesConcentrations reported as mg per Kg of whole FFT.

Surface Water Zone (ug/L)1 Fluid Fine Tails 1 (FFT) (mg/Kg)

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SWSS Parameters PAH

Mol

wt

DepthDL

(ug/L)1m DL (mg/Kg) 3.5 m 8.5 m 10.5 m

Elevation (m) (AMSL) 348 347 342 337Solids Content** (wt%) <0.02 15.0 34.7 39.8Hydrocarbon** (wt%) <0.01 0.51 2.70 2.22

Naphtha** (wt%) <0.01 <0.01 0.01 0.01

PAH CompoundsNaphthalene 128 0.10 <0.1 0.02 <0.02 <0.02 <0.02

1-Methylnaphthalene 142 0.10 <0.1 0.03 <0.03 <0.03 <0.03

2-Methylnaphthalene 142 0.10 <0.1 0.005 0.014 0.011 0.009

C1-Naphthalene 142 0.10 <0.1 0.005 0.044 0.037 0.025

C2-Naphthalene 156 0.10 0.1 0.005 0.25 0.30 0.21

C3-Naphthalene 170 0.10 0.2 0.005 2.20 1.60 0.94

C4-Naphthalene 184 0.10 0.38 0.005 10.0 8.3 5.0

Acenaphthylene 152 0.10 <0.1 0.005 0.016 0.014 <0.005

Acenaphthene 154 0.10 <0.1 0.005 0.22 0.18 0.14

C1-Acenaphthene 168 0.10 <0.1 0.005 0.28 0.24 0.16

Fluorene 166 0.05 0.052 0.005 0.17 0.14 0.06

C1-fluorene 180 0.05 0.19 0.005 2.10 1.80 0.98

C2-fluorene 194 0.05 0.23 0.005 6.2 5.2 3.1

C3-fluorene 208 0.05 0.28 0.005 17.0 15.0 11.0

Biphenyl 154 0.02 <0.02 0.005 <0.005 <0.005 <0.005

C1-biphenyl 168 0.02 0.26 0.005 0.19 0.21 0.15

C2-biphenyl 182 0.02 0.15 0.005 0.97 0.80 0.48

Phenanthrene 178 0.05 0.08 0.10 <0.10 <0.10 <0.10

C1-phenanthrene/anthracene 192 0.05 0.21 0.005 0.82 0.73 0.71




Anthracene 178 0.01 <0.01 0.005 <0.005 <0.005 <0.005

Retene 234 0.05 <0.05 0.005 0.81 0.71 0.48

Dibenzothiophene 184 0.02 <0.02 0.005 0.47 0.41 0.22

C1-dibenzothiophene 198 0.02 0.08 0.005 4.4 3.7 2.1




PAH Concentrations Surface Water

Zone (ug/L)1 Fluid Fine Tails (FFT) (mg/Kg)2

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SWSS Parameters PAH (continued)

Mol

wt

DepthDL

(ug/L)1m DL (mg/Kg) 3.5 m 8.5 m 10.5 m

Fluoranthene 202 0.04 <0.05 0.005 0.11 0.10 0.09

Pyrene 202 0.02 0.07 0.005 0.37 0.31 0.28

C1-fluoranthene/pyrene 216 0.02 0.35 0.005 2.4 2.1 1.7




Benzo(a)anthracene 228 0.01 <0.01 0.005 0.15 0.12 0.10

Chrysene 228 0.01 <0.01 0.005 0.23 0.18 0.11

C1-benzo(a)anthracene/chrysene 242 0.01 0.03 0.005 2.2 1.9 1.6



C4-benzo(a)anthracene/chrysene 284 0.01 <0.01 0.005 0.87 1.00 0.86

Benzo[e]pyrene 252 0.05 <0.01 0.005 0.29 0.25 0.22

Benzo(b&j)fluoranthene 252 0.01 0.015 0.005 0.18 0.16 0.13

Benzo(k)fluoranthene 252 0.01 <0.01 0.03 <0.03 <0.03 <0.03

Benzo(c)phenanthrene 252 0.05 <0.05 0.06 <0.06 <0.06 <0.06

Benzo(a)pyrene 252 0.01 0.011 0.005 0.10 0.09 0.07

Benzo[a]pyrene (equival.) 252 0.01 0.02 0.10 0.20 0.17 0.15

C1-benzo(a)pyrene 266 0.01 0.08 0.005 1.40 1.10 1.00

C2-benzo(a)pyrene 280 0.01 0.06 0.005 1.30 0.98 0.95

Dibenz(a,h)anthracene 278 0.01 <0.01 0.005 0.05 0.04 0.04

Perylene 252 0.05 <0.05 0.005 0.21 0.18 0.15

Benzo(g,h,i)perylene 276 0.10 <0.01 0.005 0.09 0.07 0.06

Dibenzo(a,e)pyrene 302 0.10 <0.1 0.10 − − −

Dibenzo(a,h)pyrene 302 0.10 <0.1 0.10 − − −

Dibenzo(a,i)pyrene 302 0.10 <0.1 0.10 − − −

Dibenzo(a,l)pyrene 302 0.01 <0.1 0.04 − − −

GC/MS analyses performed by Maxxam Analytics, Calgary, AB.

* Samples from Station in SWSS, July 19, 2013. Station Coordinates (UTM): 6314590N, 453803E. Surface elevation: 390.6 m (AMSL).

1: Surface Samples reported as ug per L of whole surface water sample // 2: FFT Samples reported as mg per Kg of whole FFT.

Surface Water

Zone (ug/L)1 Fluid Fine Tails (FFT) (mg/Kg)2

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Aurora Clean Water Discharge Chemistry & Historical Chemistry Data 4.2.24(b)(j) Please refer to Appendix D, E, for historical parameter trends of Aurora clean water discharge and Muskeg River upstream and downstream. Please refer to Appendix F for the data submitted monthly to AESRD. Aurora Clean Water Discharge (Please refer to Appendix D: Trends 1 to 5) Aurora EMSC Inlet system discharge and EMSC Outlet system discharge Total Suspended Solids, Dissolved Oxygen, pH, and Biochemical Oxygen Demand remained consistent with past trends. Ammonia variability was due to increased flow of aerated basal water. Ammonia concentration remained below the daily limit and monthly average limit. Aurora EMSC Inlet system discharge and EMSC Outlet system discharge operated within approval limits during 2013. All clean water sedimentation pond acute lethality test using Rainbow Trout results were 100% survival in 100% discharge sample, with one test exception that was potentially random mortality that can occur due to the laboratory variability of using living organisms. Please see description in the following table. Muskeg River (Please refer to Appendix D: Trends 1 to 5; Appendix E: Trends 6 to 12) Muskeg River has low Dissolved Oxygen content due to reaches that are stagnant and drainage that originates from large areas of muskeg. Total Suspended Solids, pH, Biochemical Oxygen Demand, Ammonia levels between the Muskeg River upstream and downstream sampling locations remained consistent with past trends. Major ion levels are similar between the Muskeg River upstream and downstream sampling locations. Overall the monitoring of Muskeg River remains comparable to previous years.

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Aurora Clean Water Discharge reportable incidents 2013

2013 AENV ref # Description Jul-30 273286 Aurora dewatering EMSC Inlet system required daily sample for pH and TSS was not

collected at the final discharge point on Friday July 26th, 2013 due to new contract sampling personnel misunderstanding and collecting a sample at Pond #1-05. Please note that the EMSC Inlet system final discharge two contributing sedimentation ponds, Pond #1-04 was not discharging and Pond #1-05 discharge sample result was well within limits TSS 4 mg/L and pH 7.87 on July 26th. Aurora dewatering discharge sampling procedure was reviewed with the new to site contract sampling personnel. A manual checklist is also completed each day to ensure required samples are collected.

Aug-14 273937 While reviewing the monthly report, it was noted that Aurora dewatering required daily sample for pH and TSS was not collected at the final discharge point for the EMSC Inlet system and EMSC Outlet system on Monday July 8th due a miscommunication between operations and new contract sampling personnel. Please note that the EMSC Inlet system and EMSC Outlet system final discharge pH and TSS sample daily results were well within operating approval limits. Aurora operations dewatering procedure, field checklist was reviewed and updated. Procedure review with the operations teams was completed.

Nov-19 277748 Aurora Limits §4.2.13 EMSC Inlet discharge sample Rainbow Trout <100% survival. On November 12th, at Aurora North Mine, the routine monthly bioassay "inlet" system discharge sample rainbow trout 96-hour bioassay result was 90% survival in 100% discharge sample. Pond #1-04 was the upstream contributor to the "inlet" system discharge on November 12th. On November 12th, routine monthly bioassay "outlet" system rainbow trout result was 100% survival in 100% discharge sample. On November 13th, the routine monthly bioassay for Pond #1-05 rainbow trout result was 100% survival in 100% discharge sample. Pond #1-05 is a contributor to the "inlet" system discharge, however was not flowing to the “inlet” discharge due to pumping issues on November 12th. Aurora water "inlet" system had normal operation prior to the November 12th bioassay sample. There were no concerns or issues related to the routine sampling and comprehensive lab analysis results (chemical and bioassay tests) prior to and on November 12th. At this time Syncrude has not determined a cause for this November 12th "inlet" system discharge <100% rainbow trout result, however it is potentially random mortality that can occur due to the laboratory variability of using living organisms. On November 19th, "inlet" system resample result for rainbow trout was 100% survival in 100% discharge sample.

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Mildred Lake Clean Water Discharge Chemistry 4.2.24(b)(j) Syncrude Mildred Lake site dewatering was not suitable for discharge due to Total Suspended Solids concerns and was diverted into the on-site closed circuit during 2013. December 2013, Syncrude started construction of a new large capacity WID final sedimentation pond. Water will be pumped from this WID final sedimentation pond to the existing rock gabion structure at the entry to Bridge Creek. Detailed plans and information were submitted to AENV under the Water Act. When commissioned, this WID sedimentation pond discharge point will be sampled prior to mixing with bridge creek as per Syncrude operating approval 26-02 section 4.2.21 (f), monitored as per section 4.2.19 Table 4.2-C, comply with limits in Table 4.2-A and reported as per section 4.2.20.

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Table 19: Syncrude Mildred Lake and Aurora discharge locations & monitoring sites

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Results and status of any industrial wastewater characterization and review conducted over the previous year 4.2.24(i) Syncrude has on-going projects and studies reviewing concepts to further improve overall site water management practices. These include water conservation initiatives to minimize the diversion of river water and the treatment of oil sands process water for return to the environment. A pollution minimization study that included wastewater characterization was submitted to AENV September 2012 as per Syncrude operating approval 26-02 clause 4.2.26. Syncrude’s Research and Development is assessing technologies to treat recycle water to facilitate site wide water management practices and to expedite aquatic reclamation initiatives such as Base Mine Lake. Research and Development initiatives with respect to water management are focused on implementing technologies with minimal environmental footprints that will provide engineered control with respect to tailings water quality and quantity. A biannual (2 year) update report on environmental aspects of tailings research and development is submitted to AENV as per Syncrude operating approval 26-02 clause 6.1.55. Syncrude began the commissioning of the Base Mine Lake, industry’s first full scale demonstration of an aquatic reclamation option. This demonstration will be conducted as per Syncrude’s commitment and subsequent approvals from Alberta Environment and the ERCB. The expectation is that this lake will over time evolve into an aquatic ecosystem and become a value added component of the final lease closure landscape. Water outflow of the lake will be directed to Syncrude's active tailings facilities until such time that it can be safely returned directly to the environment. Currently all wastewater is retained on Mildred Lake site with the exception of treated domestic (sewage) wastewater. An end pit lake research initiatives annual report is submitted to AENV as per Syncrude operating approval 26-02 clause 6.1.58.

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Substances added or consumed in the plants industrial process which may have an effect on the quality of wastewater generated 4.2.24(c) Significant quantities of chemicals are added or consumed by Syncrude operations. Depending on the chemical and its application, losses of chemicals can occur to either product streams, and or industrial wastewater control system at Mildred Lake Settling Basin or Aurora Settling Basin. Table 20: Substances added or consumed in Syncrude industrial process Chemical Amount Units Use Disposal Location Aluminum Sulphate 2311 Tonnes Water treatment Losses to Industrial Wastewater

Control System Ammonium Hydroxide (Aqua Ammonia)

68726 Tonnes 26-1 Ammonium Sulfate production

Ammonium Sulfate product in 48-1

Ammonium Hydroxide (Aqua Ammonia)

659 Tonnes Corrosion control, pH control. Plant 7 Fractionator

Ammonium salt formed is sent to the Wastewater Control System

Asphaltene Solvent (24% IPA/ 76% toluene)

205 Tonnes Cleaning and analytical solvent used in laboratory analysis.

Losses to API Separator where a majority of the hydrocarbon component is reclaimed for recycle to process.

Betz MPH5000 1.0 Tonnes Potable Losses to Industrial Wastewater Control System

BetzDearborn DCL30 5.5 Tonnes RO's Losses to Industrial Wastewater Control System

BetzDearborn DCL32 4.2 Tonnes Potable Losses to Industrial Wastewater Control System

Caustic Soda 3% 10.0 Tonnes Line and Vessel Washes Losses to Industrial Wastewater Control System

Caustic Soda Bulk 50% 36095 Tonnes Extraction process Losses to Industrial Wastewater Control System

Caustic Soda/Sodium Hydroxide Membrane Grade

3593 Tonnes Regeneration of ion exchange resins.

Losses to Industrial Wastewater Control System

CH70 0.2% 1.2 Tonnes Line and Vessel Washes Losses to Wastewater Control System

Chlorine 447 Tonnes Disinfectant for Potable water, Boiler water, and Cooling water

Losses to Wastewater Control System

Citrikleen CA - SAN # 8733, D-Limonene 15-40%, ethanolamine 3-7%, diethylene glycol monobutyl ether 3-7%

63.2 Tonnes Degreaser for various cleaning operations throughout the plant.

To API Separator where a majority of organic portion is reclaimed for recycle to process.

Clearmem 2000 107 Tonnes Water treatment Losses to Industrial Wastewater Control System

Continuum AEC 3151 591 Tonnes Cooling Water treatment Losses to Industrial Wastewater Control System

Corrshield MD4101 1.9 Tonnes Corrosion inhibitor for Aurora closed loop system.


Corrshield MD4102 2.3 Tonnes Corrosion Inhibitor added to VDU cooling water


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Chemical Amount Units Use Disposal Location Cortrol IS3031 56.3 Tonnes Oxygen Scavenger for Base

Mine Extraction Boilers and Aurora Once Through Steam Generators (OTSG)


Cortrol OS5900, 2-Propanamine 20%, N Hydroxy-Dethydroxylamine 20%

2.7 Tonnes Volatile Oxygen Scavenger used in Plant 31 OSTG


Depositrol SF5100, Succinic 15-40%, Hexylene Glucol 10-30%, 2-butoxyethanol 3-7%

7.3 Tonnes Oil Dispersant Used in Cooling Towers


Diethanolamine (DEA) - 1008 Tonnes Plant 11 circulation Losses to Wastewater Control System

Emulsotron X-250 SAN #10817 194 Tonnes Used as a demulsifier in froth treatment to dehydrate diluted bitumen.

50% to Plant 6 tailings in the water phase. Remaining 50% to Plant 7 in the hydrocarbon phase.

FireStop (Slufex SG) 0.6 Tonnes Pyrophoric treatment for Plant 16 Turnaround vessel entry


Flogard MS6210 159 Tonnes Cooling Water treatment Losses to Industrial Wastewater Control System

Flogard POT6103 8.1 Tonnes Potable Losses to Industrial Wastewater Control System

Foamtrl AF 1090 2.7 Tonnes Antifoam used for Cooling Towers


Gas-X (Early Entry3) 5.6 gallons Surfactant for Plant 16 Turnaround


Glycol/Ethylene Glycol 884 Tonnes Used in Motor Vehicles, HVAC Systems and

Waste Glycol disposed of into Wastewater Control System

Hal 10 aluminum sulphate/polymer blend

68.6 Tonnes Potable WTP coagulant Losses to Wastewater Control System

Hydrochloric Acid 5% 30.0 Tonnes Line and Vessel Washes Losses to Wastewater Control System

Hypersperse MDC700 16.1 Tonnes RO's & Potable Losses to Industrial Wastewater Control System

Klaraid CDP1334C 2.3 Tonnes Water treatment Losses to Industrial Wastewater Control System

Kleen MCT 511, SAN #8503 19.3 Tonnes Reverse Osmosis membrane cleaner


Kleen MCT103 13.5 Tonnes RO's Losses to Industrial Wastewater Control System

Maxamine 70B 4.7 Tonnes Antifoam Plant 11 Reports to Oil in three phase separator

Nalclear 8170 16.3 Tonnes Potable WTP polymer Losses to Wastewater Control System

NoNox CDA 0.4 Tonnes Ammonia odors for Plant 16 Turnaround vessel entry


Optisperse ADJ1030 0.8 Tonnes Antifoam agent for Extraction Boilers


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Chemical Amount Units Use Disposal Location Optisperse ADJ5050 13.8 Tonnes pH buffer used at Aurora

OTSG, Base Mine in the Potable water plant and Plant 9's


Optisperse AP0200 20.6 Tonnes Dispersant for Extraction Boilers


Optisperse CL6052 2.3 Tonnes Aurora Losses to Industrial Wastewater Control System

Optisperse HP54674 55.8 Tonnes Plant 9's Losses to Industrial Wastewater Control System

Optisperse HP59910, NaOH 3-7% 8.7 Tonnes Internal Boiler Treatment Chemical, Plant 9-3 Boilers


PhilmPlus 5K1642 13.2 Tonnes Plant 7-3 Losses to Industrial Wastewater Control System

Philmplus 5K35 (Temporary Replacement for 5K48)

9.7 Tonnes Corrosion Inhibitor used in Diluent prep and LC Finer


Polymer 2160 Tonnes Tailings Losses to Industrial Wastewater Control System

Potassium Nitrite 16.5 Tonnes Used in Benfield System Losses to Industrial Wastewater Control System

Potassium Permanganate 0.2 Tonnes Used for water softening system.

Losses to Wastewater Control System (Aurora)

Prochem 4H550 3.6 Tonnes Plant 12's Losses to Industrial Wastewater Control System

QuikTurn 10.4 Tonnes Injected into steam for cleaning, degassing, and degreasing process equipment Emergency Cleaning, Plant 14-0 T/A, Plant 16-4 Emergency, Plant 07-1 DRU, Plant 18-1 RX, Hydrogen Regenerator/Absorber, 9-2 Steam Systems


ReFresh (Sulban) 0.8 Tonnes H2S Scavenger for Vessel entry on Plant 16 Turnaround


Scaletrol PDC9317 182 Tonnes Anti-scalant for Aurora process heaters


Soda Ash 3% 20.0 Tonnes Line and Vessel Washes Losses to Industrial Wastewater Control System

Soda Ash 58% Dense 0.6 Tonnes Washing of stainless steel equipment primarily in the Cokers


Sodium Aluminate Bulk 304 Tonnes Water clarification, coagulant aid.

sludge to Recycle pond/ Wastewater Control System

Sodium Chloride Salt (NaCl) 304 Tonnes Aurora Utilites & Offsites used to regenerate softening units at Water Treatment Plant


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Chemical Amount Units Use Disposal Location Sodium Hypochlorite Bleach, 12.% 32320 Tonnes Disinfectant used in PWP

and Beaver Creek storage tank

Losses to Wastewater Control System (Aurora & Mildred Lake)

Spectrus BD1503, 30-60% diethyl glycol monobutyl ether

157 Tonnes Water based deposit control agent


Spectrus NX1102 199 Tonnes Cooling Towers microbial control agent


Spectrus NX1106 382 Tonnes Intersite Bacteria Control Agent


Steamate NA8280, Dimethylaminopropylamine 55%, Cyclohexylamine 30%, Monoethanolamine 7%

0.8 Tonnes Used in Plant 31 OSTG for pH control


Steamate NA8580 10.8 Tonnes Plant 9's Losses to Industrial Wastewater Control System

Steamate NA8590 1.0 Tonnes Neutralizing amine for Extraction Boilers


Steamate PAS6065, Cyclohexylamine 15-40%, Monoethanolamine (Ethanolamine) 10-30%, Diethylhydroxylamine 7-13%, Diethylaminopropylamine (DMAPA) 5-10%

70.1 Tonnes Oxygen Scavenger, Metal Passivator Plt 9 Boilers


Steamate PAS6066, Cyclohexylamine 15-40%, Morpholine 10-30%, Diethylhydroxylamine 10-30%

97.2 Tonnes Plant 31 Boiler Feed water Corrosion Inhibitor


Sulfuric Acid (solution - 93%) 8694 Tonnes Regeneration of ion exchange resins, pH control in cooling water system.

Used up in process. Excess reports to Recycle pond / Wastewater Control System

Sulphamic Acid (10%) 4.0 Tonnes Line and Vessel Washes Losses to Industrial Wastewater Control System

SyncroSol SST (1-5% Tetrasodium EDTA)

162 Tonnes Washbay Soap Mildred Lake & Aurora


Synfuel Cocktail Mix (DDA) 153 Tonnes Diesel Additive for Plant 14 Losses to Industrial Wastewater Control System

Toluene SAN #3961 18.0 Tonnes Solvent for analysis of lab samples

Oily water sewer to API separator where majority is recovered for recycling to process. Losses to Wastewater Control System (Aurora)

Trisodium Phosphate 26.6 Tonnes Boiler water treatment Losses to Recycle Pond / Wastewater Control System

Vanadium Pentoxide 2.8 Tonnes Used in benfield system Losses to Industrial Wastewater Control System

Water Care OZ90 392 Tonnes Water & Offsites Losses to Wastewater Control System

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Appendix A: Historical Parameter Trends MLSB (Trends A1 to A17)

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Appendix B: Historical Parameter Trends MLSB, SWSS, Beaver Creek

(Trends B1 to B16)

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0100200300400500600700800900

1000

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

mg

/L

Year

CHART B14 Sulfate

MLSB Seepage Beaver Creek SWSS Seepage

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Appendix C: Historical Ionic Ratio Trends MLSB, SWSS, Beaver Creek (Trends C1 to C4)

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Appendix D: Historical Parameter Trends Aurora Clean Water Discharge (Trends 1 to 5)

Trend #1 Total Suspended Solids (TSS) monthly average

Trend #2 Dissolved Oxygen (D.O.) monthly average

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Trend #3 pH monthly average

Trend #4 Biochemical Oxygen Demand (BOD) monthly average

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Trend #5 Ammonia Nitrogen (NH4-N) monthly average

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Appendix E: Historical Parameter Trends Muskeg River (Trends 6 to 12)

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Appendix F: Water Monthly Report Summary 4.2.24 (h)

Please note that Appendix F is appended.

APPENDIX F

Aurora North Mine Mildred Lake Mine

Table 4.2-C

Dewatering Activity Discharge Sedimentation Pond Monitoring

Monthly Reports 2013

Aurora North Mine Comments January 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of: The EMSC Inlet discharge and EMSC Outlet discharge was shutdown December 9th,

2012 to January 7th, 2013 due to the contract lab rainbow trout bioassay result in December. Syncrude believes the contract lab control rainbow trout stock caused this December result. The Aurora water diversion discharge results were 100% survival in 100% concentration after the contract lab changed the control test rainbow trout stock batch. These results are included on page 12 of this report.

All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A

2013 Bioassay sampling schedule

Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River

Downstream

January 12 1 2 - 2 - 1 February 12 - 2 1 2 1 - March 12 1 2 - 2 - 1 April 9 - 2 1 2 1 - May 14 1 2 - 2 - 1 June 11 - 2 1 2 1 - July 9 1 2 - 2 - 1 August 13 - 2 1 2 1 - September 10 1 2 - 2 - 1

October 8 - 2 1 2 1 - November 12 1 2 - 2 - 1 December 10 - 2 1 2 1 -

1 = Chronic toxicity test using Ceriodaphnia and fathead minnows (including Microtox IC metric) 2 = 96-hour Multiple Concentration Acute Lethality Test Using Rainbow Trout

Daily Flows and Parameter Results

Sample Location EMSC Diversion Inlet EMSC Diversion Outlet

Sample Date pH TSS

(mg/L) Flow (m3) pH TSS (mg/L) Flow (m3)

Approval 26-02 Limit 6.0 to 9.5 50 6.0 to 9.5 50

1-Jan-13 0 0 2-Jan-13

Not Discharging

0

Not Discharging

0

3-Jan-13 0 0

4-Jan-13 0 0 5-Jan-13 - - 0 - - 0 6-Jan-13 - - 0 - - 0 7-Jan-13

Not Discharging

0

Not Discharging

0 8-Jan-13 0 0 9-Jan-13 0 0

10-Jan-13 0 0 11-Jan-13 731 1,018 12-Jan-13 7.7 <1.0 2,925 8.0 1 10,175 13-Jan-13 - - 0 - - 0 14-Jan-13 7.6 4 8,045 7.8 6 3,053 15-Jan-13 Not Discharging 731 Not Discharging 1,399 16-Jan-13 7.8 4 8,228 8.0 2 12,210 17-Jan-13 7.9 7 5,028 7.9 17 4,579 18-Jan-13 7.9 7 8,776 Not Discharging 0 19-Jan-13 - - 8,776 - - 4,833 20-Jan-13 - - 4,022 - - 0 21-Jan-13 7.9 6 3,291 7.9 5 5,088 22-Jan-13 8.0 3 2,560 7.9 2 3,307 23-Jan-13 7.9 5 4,571 Not Discharging 0 24-Jan-13 Not Discharging 0 7.9 6 6,105 25-Jan-13 7.9 8 6,034 7.8 7 2,035 26-Jan-13 - - 0 - - 0 27-Jan-13 - - 6,034 - - 11,701 28-Jan-13 7.7 5 7,862 7.8 5 4,070 29-Jan-13 7.9 5 8,045 7.9 5 8,395 30-Jan-13 7.9 4 8,776 Not Discharging 2,289 31-Jan-13 7.9 7 7,313 7.9 5 6,105

Totals 101,748 86,362 Total Flow 188,110

Weekly Parameter

Sample Location Approval

26-02 Limit

CCME

Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date 16-Jan-13 16-Jan-13 22-Jan-13 22-Jan-13 29-Jan-13 29-Jan-13 Anions Alkalinity (Total as CaCO3) (mg/L) 550 290 590 320 586 340 Alkalinity (PP as CaCO3) (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 Bicarbonate (mg/L) 670 360 720 390 715 415 Carbonate (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 Hydroxide (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 Chloride (mg/L) 120 39 16 60 23 50 25 Sulphate (mg/L) 130 53 110 64 79 61 Cations (Dissolved) Calcium (mg/L) 87 62 89 62 59.8 55.9 Iron (mg/L) 0.3 <0.060 0.2 <0.060 0.19 0.02 0.12 Magnesium (mg/L) 18 14 18 13 12.8 13.1 Manganese (mg/L) 0.35 0.21 0.3 0.19 0.147 0.133 Potassium (mg/L) 6.1 2.7 5.8 3.3 5.3 3.3 Sodium (mg/L) 200 82 220 100 234 112 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 5 <2 4 4 3 2 Misc. Inorganics Dissolved Inorganic Carbon (mg/L) 130 72 150 83 162 94 Sulphide (mg/L) 0.31 0.0025 <0.0020 <0.0020 0.073 0.0098 Nutrients Dissolved Nitrate as N (mg/L) 13 0.035 0.22 0.04 0.31 0.058 0.022 Dissolved Nitrite as N (mg/L) 0.06 0.013 <0.0099 <0.0099 <0.0099 <0.0099 <0.0099 Total Phosphate as P (mg/L) 0.16 0.14 0.098 0.091 0.21 0.12

Total Ammonia as N (mg/L) 2.5 daily 1.0 monthly ave

0.9 0.23 0.81 0.33 0.8 0.4

Dissolved Organic Carbon (mg/L) 7.2 7.9 6.3 8.2 10 10

Monthly / Bi-Monthly Parameter

Location Approval

26-02 Limit

CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream Date 12-Jan-13 12-Jan-13 15-Jan-13 15-Jan-13 Anions Alkalinity (PP as CaCO3) (mg/L) <0.50 2.5 <0.50 <0.50 Alkalinity (Total as CaCO3) (mg/L) 310 340 200 160 Bicarbonate (mg/L) 370 410 250 190 Carbonate (mg/L) <0.50 3 <0.50 <0.50 Hydroxide (mg/L) <0.50 <0.50 <0.50 <0.50 Sulphate Dissolved (mg/L) 230 70 <1.0 7.4 Chloride Dissolved (mg/L) 120 2.8 22 3.1 <1.0 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 <2 <2 - - Misc. Inorganics Total Suspended Solids (mg/L) 50 <1.0 1.3 2 <1.0 pH 6.0-9.5 7.65 8.01 7.66 7.93

Dissolved Oxygen (DO) >5 >6.5 weekly 7.97 12.12 6.21 6.21

Sulphide (mg/L) <0.0020 <0.0020 - - Nutrients

Ammonia Total as N (mg/L) 2.5 daily 1.0 monthly ave 0.13 0.18 0.26 0.17

Inorganic Carbon Dissolved (mg/L) 78 85 51 38 Nitrate Dissolved as N (mg/L) 13 0.018 0.022 <0.13 0.44 Nitrite Dissolved as N (mg/L) 0.06 <0.0099 <0.0099 <0.099 <0.0099 Dissolved Organic Carbon (mg/L) 5.7 8.9 25 6.8 Phosphate Total as P (mg/L) 0.035 0.085 0.024 0.068 Physical Parameters Temperature (°C) 0.69 0.58 0.01 0.01

Weekly Parameter Results

Sample Date Sample Location DO (mg/L)

Temperature (OC)

Approval 26-02 Limit >5 >6.5 weekly -

12-Jan-13 EMSC Diversion Inlet 8 0.7 12-Jan-13 EMSC Diversion Outlet 12.1 0.6 16-Jan-13 EMSC Diversion Inlet 8.9 1 16-Jan-13 EMSC Diversion Outlet 11 0 22-Jan-13 EMSC Diversion Inlet 7.5 0.1 22-Jan-13 EMSC Diversion Outlet 9.4 0.5 29-Jan-13 EMSC Diversion Inlet 9 0.1 29-Jan-13 EMSC Diversion Outlet 10.1 0.2


Temperature (OC)

2-Jan-13 Stanley Creek Upstream 12.6 0 3-Jan-13 Stanley Creek Upstream 10.6 0 4-Jan-13 Stanley Creek Upstream 10.8 0 8-Jan-13 Stanley Creek Upstream 13.3 0.2 9-Jan-13 Stanley Creek Upstream 12.1 0 10-Jan-13 Stanley Creek Upstream 12.5 0 15-Jan-13 Stanley Creek Upstream 6.2 0 16-Jan-13 Stanley Creek Upstream 14 0.1 17-Jan-13 Stanley Creek Upstream 11.8 2.4 21-Jan-13 Stanley Creek Upstream 9.9 0.1 22-Jan-13 Stanley Creek Upstream 10.9 0 23-Jan-13 Stanley Creek Upstream 13.8 0 30-Jan-13 Stanley Creek Upstream 11.4 0 31-Jan-13 Stanley Creek Upstream 11.8 1

a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data)

Location CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream

Date 12-Jan-13 12-Jan-13 15-Jan-13 15-Jan-13

Dissolved Metals

Aluminum (mg/L) 0.1 a <0.0010 0.005

Antimony (mg/L) <0.00060 <0.00060

Arsenic (mg/L) 0.005 <0.00020 <0.00020

Barium (mg/L) 0.12 0.11

Beryllium (mg/L) <0.0010 <0.0010

Boron (mg/L) 1.5 0.079 0.48

Cadmium (ug/L) 0.042 b 0.0095 0.0055

Calcium (mg/L) 170 68 58 49

Chromium (mg/L) <0.0010 <0.0010

Cobalt (mg/L) 0.001 <0.00030

Copper (mg/L) 0.003 b 0.0037 0.0059

Iron (mg/L) 0.3 <0.060 0.28 0.52 0.17

Lead (mg/L) 0.0045 b <0.00020 <0.00020

Lithium (mg/L) <0.020 0.046

Magnesium (mg/L) 31 15 15 11

Manganese (mg/L) 0.65 0.22 0.35 0.17

Mercury (ug/L) 0.026 <0.0020 <0.0020

Molybdenum (mg/L) 0.073 <0.00020 0.00023

Nickel (mg/L) 0.118 b 0.0029 0.00052

Phosphorus (mg/L) <0.10 <0.10

Potassium (mg/L) 2.3 3.1 1.3 1.1

Selenium (mg/L) 0.001 <0.00020 <0.00020

Silicon (mg/L) 8.6 7

Silver (mg/L) 0.0001 <0.00010 <0.00010

Sodium (mg/L) 19 110 11 3.9

Strontium (mg/L) 0.32 0.22

Sulphur (mg/L) 75 23

Thallium (mg/L) 0.0008 <0.00020 <0.00020

Tin (mg/L) <0.0010 <0.0010

Titanium (mg/L) <0.0010 0.001

Uranium (mg/L) 0.015 0.00029 0.00012

Vanadium (mg/L) <0.0010 <0.0010

Zinc (mg/L) 0.03 0.0034 0.0074


EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 12-Jan-13 12-Jan-13

Total Metals

Aluminum (mg/L) 0.1 a 0.024 0.092

Antimony (mg/L) <0.00060 <0.00060

Arsenic (mg/L) 0.005 0.00027 0.00026

Barium (mg/L) 0.13 0.11

Beryllium (mg/L) <0.0010 <0.0010

Boron (mg/L) 1.5 0.081 0.47

Cadmium (ug/L) 0.042 b 0.019 0.016

Calcium (mg/L) 170 67

Chromium (mg/L) <0.0010 <0.0010

Cobalt (mg/L) 0.0011 <0.00030

Copper (mg/L) 0.003 b <0.00020 0.00058

Iron (mg/L) 0.3 0.81 1.1

Lead (mg/L) 0.0045 b <0.00020 <0.00020

Lithium (mg/L) <0.020 0.045

Magnesium (mg/L) 32 15

Manganese (mg/L) 0.67 0.22

Mercury (ug/L) 0.026 <0.0020 <0.0020

Molybdenum (mg/L) 0.073 <0.00020 0.00026

Nickel (mg/L) 0.118 b 0.0032 0.00064

Phosphorus (mg/L) <0.10 0.13

Potassium (mg/L) 2.4 3

Selenium (mg/L) 0.001 <0.00020 <0.00020

Silicon (mg/L) 9.1 7.4

Silver (mg/L) 0.0001 <0.00010 <0.00010

Sodium (mg/L) 21 100

Strontium (mg/L) 0.33 0.21

Sulphur (mg/L) 79 23

Thallium (mg/L) 0.0008 <0.00020 <0.00020

Tin (mg/L) <0.0010 <0.0010

Titanium (mg/L) 0.0022 0.0037

Uranium (mg/L) 0.015 0.00028 0.00012

Vanadium (mg/L) <0.0010 0.0012

Zinc (mg/L) 0.03 0.0068 0.013 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data)


EMSC Diversion

Inlet

EMSC Diversion


Extractable Hydrocarbons

F2 (C10-C16 Hydrocarbons) (mg/L) <0.10 <0.10

F3 (C16-C34 Hydrocarbons) (mg/L) <0.10 <0.10

Volatiles

Benzene (ug/L) 370 <0.40 <0.40

Toluene (ug/L) 2 <0.40 <0.40

Ethylbenzene (ug/L) 90 <0.40 <0.40

o-Xylene (ug/L) <0.40 <0.40

m&p-Xylenes (ug/L) <0.80 <0.80

Xylenes (Total) (ug/L) <0.80 <0.80

F1 (C06-C10) - BTEX Purgeable (ug/L) <100 <100

Misc. Organics

Naphthenic Acids (mg/L) <1.0 1.8


EMSC Diversion

Inlet

EMSC Diversion


Polycyclic Aromatic Hydrocarbons

Acenaphthene (ug/L) 5.8 <0.10 <0.10

Acenaphthylene (ug/L) <0.10 <0.10

Acridine (ug/L) 4.4 <0.20 <0.20

Anthracene (ug/L) 0.012 <0.010 <0.010

Benzo(a)anthracene (ug/L) 0.018 <0.0085 <0.0085

Benzo(b&j)fluoranthene (ug/L) <0.0085 <0.0085

Benzo(k)fluoranthene (ug/L) <0.0085 <0.0085

Benzo(g,h,I)perylene (ug/L) <0.0085 <0.0085

Benzo(c)phenanthrene (ug/L) <0.050 <0.050

Benzo(a)pyrene (ug/L) 0.015 <0.0075 <0.0075

Benzo(e)pyrene (ug/L) <0.050 <0.050

Chrysene (ug/L) <0.0085 <0.0085

Dibenz(a,h)anthracene (ug/L) <0.0075 <0.0075

Fluoranthene (ug/L) 0.04 <0.040 <0.040

Fluorene (ug/L) 3 <0.050 <0.050

Indeno(1,2,3-cd)pyrene (ug/L) <0.0085 <0.0085

2-Methylnaphthalene (ug/L) <0.10 <0.10

Naphthalene (ug/L) 1.1 <0.10 <0.10

Phenanthrene (ug/L) 0.4 <0.050 <0.050

Perylene (ug/L) <0.050 <0.050

Pyrene (ug/L) 0.025 <0.020 0.031

Quinoline (ug/L) 3.4 <0.20 <0.20

CCME water quality guidelines for the protection of aquatic life; fresh water; long term (updated 2012)

Location Approval

26-02 Limit

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream Date 12-Jan-13 12-Jan-13 15-Jan-13

Bioassay Ceriodaphnia dubia Chronic Bioassay LC50 (%) >100 >100 >100 Ceriodaphnia dubia Chronic Bioassay LC25 (%) >100 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC50 (%) >100 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC25 (%) 37 >100 >100 Fathead Minnow Chronic Bioassay LC50 (%) >100 >100 >100 Fathead Minnow Chronic Bioassay LC25 (%) >100 >100 >100 Fathead Minnow Chronic Bioassay IC50 (%) >100 >100 >100 Fathead Minnow Chronic Bioassay IC25 (%) >100 >100 >100 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 96 hr Rainbow Trout (% Survival in 100% Discharge Sample) 100% 100 100

Microtox IC50 (15 min, 15C) (%) >91 >91 >91 Microtox IC20 (15 min, 15C) (%) >91 >91 >91

Additional Bioassay Sampling

Location Approval 26-02 Limit

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Date 16-Jan-13 16-Jan-13 17-Jan-13 17-Jan-13

BioAssay 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 >100 >100

96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 >100 >100

96 hr Rainbow Trout (% Survival in 100% Discharge Sample) 100% 100 100 100 100

Location Approval

26-02 Limit

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 22-Jan-13 22-Jan-13 30-Jan-13 31-Jan-13 BioAssay 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 >100 >100

96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 >100 >100

96 hr Rainbow Trout (% Survival in 100% Discharge Sample) 100% 100 100 100 100

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of January.

Aurora North Mine Comments February 2103 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C.

o February 18th samples were not collected due to the statutory holiday.

All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River

Downstream

January 12 1 2 1 2 - 1 February 12 - 2 - 2 1 - March 12 1 2 1 2 - 1 April 9 - 2 - 2 1 - May 14 1 2 1 2 - 1 June 11 - 2 - 2 1 - July 9 1 2 1 2 - 1 August 13 - 2 - 2 1 - September 10 1 2 1 2 - 1 October 8 - 2 - 2 1 - November 12 1 2 1 2 - 1 December 10 - 2 - 2 1 - 1 = Chronic toxicity test using Ceriodaphnia and fathead minnows (including Microtox IC metric)

2 = 96-hour Multiple Concentration Acute Lethality Test Using Rainbow Trout


Sample Location EMSC Diversion Inlet EMSC Diversion Outlet

Sample Date pH TSS (mg/L)

Flow (m3) pH TSS

(mg/L) Flow (m3)


1-Feb-13 Not Discharging 5,668 7.9 3 6,359 2-Feb-13 914 7,631 3-Feb-13 7,496 3,561 4-Feb-13 7.9 5 5,302 7.9 2 10,430 5-Feb-13 8.2 7 2,194 8.1 4 4,579 6-Feb-13 8.0 2 2,103 8.0 3 10,430 7-Feb-13 8.0 1 8,045 Not Discharging 636 8-Feb-13 7.8 7 7,313 7.9 4 10,048 9-Feb-13 5,851 7,886

10-Feb-13 8,776 4,324 11-Feb-13 7.7 4 2,925 7.9 4 8,140 12-Feb-13 8.3 3 8,776 8.1 3 5,596 13-Feb-13 7.9 2 3,474 7.9 3 7,123 14-Feb-13 8.1 3 4,388 8.0 2 2,544 15-Feb-13 7.8 8 3,474 7.9 5 6,868 16-Feb-13 5,851 7,123 17-Feb-13 8,776 3,053 18-Feb-13 * * 3,840 * * 8,903 19-Feb-13 7.9 5 8,776 7.9 3 8,649 20-Feb-13 Not Discharging 2,560 Not Discharging 3,053 21-Feb-13 7.9 2 7,131 8.0 4 9,412 22-Feb-13 Not Discharging 2,377 Not Discharging 1,526 23-Feb-13 8,776 10,430 24-Feb-13 8,776 1,781 25-Feb-13 7.8 <1 8,776 7.8 4 10,430 26-Feb-13 8.0 <2 8,776 Not Discharging 4,960 27-Feb-13 7.9 2 5,485 8.0 6 7,377 28-Feb-13 Not Discharging 1,097 Not Discharging 2,035


* Statutory Holiday

Weekly Parameter

Sample Location Approval 26-02 Limit

CCME

Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date 5-Feb-13 5-Feb-13 19-Feb-13 19-Feb-13 26-Feb-13 27-Feb-13 Anions Alkalinity (Total as CaCO3) (mg/L) 611 386 608 400 600 420 Alkalinity (PP as CaCO3) (mg/L) <5 <5 <5 <5 <0.50 <0.50 Bicarbonate (mg/L) 746 471 742 488 730 510 Carbonate (mg/L) <5 <5 <5 <5 <0.50 <0.50 Hydroxide (OH) (mg/L) <5 <5 <5 <5 <0.50 <0.50 Chloride (mg/L) 120 53 31 52 33 51 34 Sulphate (mg/L) 71 45 74 41 83 41 Cations (Dissolved) Calcium (mg/L) 49 46.4 51.8 45.1 74 50 Iron (mg/L) 0.3 0.04 0.07 0.04 0.05 <0.060 0.081 Magnesium (mg/L) 11.4 12.2 11.9 12.2 17.0 12.0 Manganese (mg/L) 0.098 0.07 0.109 0.05 0.23 0.0066 Potassium (mg/L) 5.7 4.6 5.6 4.6 7.4 5.0 Sodium (mg/L) 257 132 264 141 240 130 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 <2 2 3 2 3 2 Misc. Inorganics Dissolved Inorganic Carbon (mg/L) 152 86 161 110 150 110 Sulphide (mg/L) 0.06 <0.0020 0.05 0.0081 0.028 <0.0020 Nutrients Dissolved Nitrate as N (mg/L) 13 0.04 0.013 <0.013 <0.013 0.058 0.013 Dissolved Nitrite as N (mg/L) 0.06 0.01 <0.0099 <0.0099 <0.0099 <0.0099 0.01 Total Phosphate as P (mg/L) 0.24 0.13 0.23 0.15 0.18 0.12 Total Ammonia as N (mg/L) 2.5 daily

1.0 monthly ave 1.00 0.60 0.90 0.60 0.78 0.57

Dissolved Organic Carbon (mg/L) 10 10 10 11 6.6 6.4

Weekly Parameter

Sample Date Sample Location D.O.

(mg/L) Temperature

(C)

Approval 26-02 Limit >5 daily

>6.5 weekly ave 5-Feb-13 EMSC Diversion Inlet 7.1 0.9 5-Feb-13 EMSC Diversion Outlet 10 0.1 12-Feb-13 EMSC Diversion Inlet 5.5 5.4 12-Feb-13 EMSC Diversion Outlet 11 4.9 19-Feb-13 EMSC Diversion Inlet 7.9 0.7 19-Feb-13 EMSC Diversion Outlet 10.7 0.2 26-Feb-13 EMSC Diversion Inlet 6.8 3 27-Feb-13 EMSC Diversion Outlet 9.7 1.6

Sample Date Sample Location D.O.

(mg/L) Temperature

(C) 1-Feb-13 Stanley Creek Upstream 10.1 0.3 5-Feb-13 Stanley Creek Upstream 14.1 0.1 6-Feb-13 Stanley Creek Upstream 12.3 0.1 7-Feb-13 Stanley Creek Upstream 11.5 0.3 12-Feb-13 Stanley Creek Upstream 12.7 0.1 13-Feb-13 Stanley Creek Upstream 12.3 0.1 14-Feb-13 Stanley Creek Upstream 14.1 0 19-Feb-13 Stanley Creek Upstream 11 0

20-Feb-13 Stanley Creek Upstream 12.7 0.5

21-Feb-13 Stanley Creek Upstream 12.4 0






CCME

Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Date 12-Feb-13 12-Feb-13 12-Feb-13 21-Feb-13 12-Feb-13

Anions Alkalinity (PP as CaCO3) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Alkalinity (Total as CaCO3) (mg/L) 640 390 240 350 170 Bicarbonate (mg/L) 780 480 290 420 210 Carbonate (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Sulphate Dissolved (mg/L) 69 44 <1.0 1.1 9.1 Chloride Dissolved (mg/L) 120 53 33 3.3 3.2 1.3 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 3 3 Misc. Inorganics Total Suspended Solids (mg/L) 50 2.7 3.3 2.0 3.3 13.0 pH 6.0-9.5 8.3 8.1 7.7 7.5 7.9

Dissolved Oxygen (DO) >5 daily >6.5 weekly ave

5.5 11.0 7.3 4.0 12.7

Sulphide (mg/L) 0.041 <0.0020 Nutrients

Ammonia Total as N (mg/L) 2.5 daily 1.0 monthly ave

0.95 0.61 0.34 0.56 0.097

Inorganic Carbon Dissolved (mg/L) 160 100 54 77 39 Nitrate Dissolved as N (mg/L) 2.93 0.15 <0.013 0.17 0.053 0.58 Nitrite Dissolved as N (mg/L) 0.06 <0.0099 <0.0099 <0.0099 <0.0099 <0.0099 Dissolved Organic Carbon (mg/L) 7.5 6.6 22 16 6.6 Phosphate Total as P (mg/L) 0.21 0.12 0.059 0.052 0.086 Physical Parameters Temperature (°C) 5.4 4.9 0.0 0.0 0.1

Location CCME

Guideline EMSC

Diversion Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Date 12-Feb-13 12-Feb-13 12-Feb-13 21-Feb-13 12-Feb-13 Dissolved Metals Aluminum (mg/L) 0.1 a <0.0010 0.0027 Antimony (mg/L) <0.00060 <0.00060 Arsenic (mg/L) 0.005 <0.00020 <0.00020 Barium (mg/L) 0.13 0.082 Beryllium (mg/L) <0.0010 <0.0010 Boron (mg/L) 1.5 1.3 0.94 Cadmium (ug/L) 0.042 b 0.0061 0.0051 Calcium (mg/L) 61 56 62 84 51 Chromium (mg/L) 0.0089 <0.0010 <0.0010 Cobalt (mg/L) <0.00030 <0.00030 Copper (mg/L) 0.003 b <0.00020 0.0002 Iron (mg/L) 0.3 <0.060 0.15 0.32 0.1 <0.060 Lead (mg/L) 0.0045 b <0.00020 <0.00020 Lithium (mg/L) 0.1 0.066 Magnesium (mg/L) 13 14 17 22 12 Manganese (mg/L) 0.2 0.13 0.37 0.5 0.2 Mercury (ug/L) 0.026 <0.0020 <0.0020 Molybdenum (mg/L) 0.073 <0.00020 0.00026 Nickel (mg/L) 0.118 b 0.00064 <0.00050 Phosphorus (mg/L) 0.26 <0.10 Potassium (mg/L) 6.9 5.5 1.3 1.3 1 Selenium (mg/L) 0.001 <0.00020 <0.00020 Silicon (mg/L) 4.3 5.3 Silver (mg/L) 0.0001 <0.00010 <0.00010 Sodium (mg/L) 260 130 12 9.1 4.4 Strontium (mg/L) 0.43 0.43 Sulphur (mg/L) 23 14 Thallium (mg/L) 0.0008 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 Titanium (mg/L) <0.0010 <0.0010 Uranium (mg/L) 0.015 <0.00010 <0.00010 Vanadium (mg/L) <0.0010 <0.0010 Zinc (mg/L) 0.03 <0.0030 <0.0030 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (updated 2012)


EMSC Diversion Inlet

EMSC Diversion

Outlet Date 12-Feb-13 12-Feb-13 Total Metals Aluminum (mg/L) 0.1 a 0.037 0.025 Antimony (mg/L) <0.00060 <0.00060 Arsenic (mg/L) 0.005 <0.00020 <0.00020 Barium (mg/L) 0.13 0.084 Beryllium (mg/L) <0.0010 <0.0010 Boron (mg/L) 1.5 1.2 0.91 Cadmium (ug/L) 0.042 b 0.025 0.019 Calcium (mg/L) 57 54 Chromium (mg/L) 0.0089 <0.0010 <0.0010 Cobalt (mg/L) <0.00030 <0.00030 Copper (mg/L) 0.003 b 0.001 0.00053 Iron (mg/L) 0.3 0.22 0.6 Lead (mg/L) 0.0045 b <0.00020 <0.00020 Lithium (mg/L) 0.094 0.063 Magnesium (mg/L) 13 13 Manganese (mg/L) 0.19 0.14 Mercury (ug/L) 0.026 0.0038 <0.0020 Molybdenum (mg/L) 0.073 <0.00020 <0.00020 Nickel (mg/L) 0.118 b 0.0013 <0.00050 Phosphorus (mg/L) 0.28 0.18 Potassium (mg/L) 6.6 5.3 Selenium (mg/L) 0.001 <0.00020 <0.00020 Silicon (mg/L) 4.1 5 Silver (mg/L) 0.0001 <0.00010 <0.00010 Sodium (mg/L) 250 130 Strontium (mg/L) 0.4 0.41 Sulphur (mg/L) 22 14 Thallium (mg/L) 0.0008 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 Titanium (mg/L) 0.0014 0.0013 Uranium (mg/L) 0.015 <0.00010 <0.00010 Vanadium (mg/L) <0.0010 0.0011 Zinc (mg/L) 0.03 <0.0030 0.0056


EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 12-Feb-13 12-Feb-13 Extractable Hydrocarbons F2 (C10-C16 Hydrocarbons) (mg/L) <0.10 <0.10 F3 (C16-C34 Hydrocarbons) (mg/L) <0.10 <0.10 Volatiles Benzene (ug/L) 370 <0.40 <0.40 Toluene (ug/L) 2 <0.40 <0.40 Ethylbenzene (ug/L) 90 <0.40 <0.40 o-Xylene (ug/L) <0.40 <0.40 m&p-Xylenes (ug/L) <0.80 <0.80 Xylenes (Total) (ug/L) <0.80 <0.80 F1 (C06-C10) - BTEX Purgeable (ug/L) <100 <100 Misc. Organics Naphthenic Acids (mg/L) 5.6 2.8 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (updated 2012)



EMSC Diversion

Outlet Date 12-Feb-13 12-Feb-13 Polycyclic Aromatic Hydrocarbons Acenaphthene (ug/L) 5.8 <0.10 <0.10 Acenaphthylene (ug/L) <0.10 <0.10 Acridine (ug/L) 4.4 <0.20 <0.20 Anthracene (ug/L) 0.012 <0.010 <0.010 Benzo(a)anthracene (ug/L) 0.018 <0.0085 <0.0085 Benzo(b&j)fluoranthene (ug/L) <0.0085 <0.0085 Benzo(k)fluoranthene (ug/L) <0.0085 <0.0085 Benzo(g,h,I)perylene (ug/L) <0.0085 <0.0085 Benzo(c)phenanthrene (ug/L) <0.050 <0.050 Benzo(a)pyrene (ug/L) 0.015 <0.0075 <0.0075 Benzo(e)pyrene (ug/L) <0.050 <0.050 Chrysene (ug/L) <0.0085 <0.0085 Dibenz(a,h)anthracene (ug/L) <0.0075 <0.0075 Fluoranthene (ug/L) 0.04 <0.040 <0.040 Fluorene (ug/L) 3 <0.050 <0.050 Indeno(1,2,3-cd)pyrene (ug/L) <0.0085 <0.0085 2-Methylnaphthalene (ug/L) <0.10 <0.10 Naphthalene (ug/L) 1.1 <0.10 0.16 Phenanthrene (ug/L) 0.4 <0.050 <0.050 Perylene (ug/L) <0.050 <0.050 Pyrene (ug/L) 0.025 <0.020 <0.020 Quinoline (ug/L) 3.4 <0.20 <0.20

Location Approval

26-02 Limit

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River Upstream

Date 19-Feb-13 19-Feb-13 21-Feb-13 Bioassay Ceriodaphnia dubia Chronic Bioassay LC50 (%) >100 Ceriodaphnia dubia Chronic Bioassay LC25 (%) >100 Ceriodaphnia dubia Chronic Bioassay IC50 (%) 93 Ceriodaphnia dubia Chronic Bioassay IC25 (%) 64 Fathead Minnow Chronic Bioassay LC50 (%) >100 Fathead Minnow Chronic Bioassay LC25 (%) >100 Fathead Minnow Chronic Bioassay IC50 (%) >100 Fathead Minnow Chronic Bioassay IC25 (%) >100 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 96 hr Rainbow Trout Screen (% Survival in 100% Discharge Sample) 100 100 100

Microtox IC50 (15 min, 15C) (%) >91 Microtox IC20 (15 min, 15C) (%) >91

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of February.

Aurora North Mine Comments March 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of: EMSC Inlet water level was too low for discharge on March 12th, 20th, 27th, and 28th. EMSC Outlet water level was too low for discharge on March 7th, and 15th. Samples were not collected due to the statutory holiday on March 29th. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River

Downstream January 12 1 2 1 2 - 1 February 12 - 2 - 2 1 - March 12 1 2 1 2 - 1 April 9 - 2 - 2 1 - May 14 1 2 1 2 - 1 June 11 - 2 - 2 1 - July 9 1 2 1 2 - 1 August 13 - 2 - 2 1 - September 10 1 2 1 2 - 1 October 8 - 2 - 2 1 - November 12 1 2 1 2 - 1 December 10 - 2 - 2 1 -

1 = Chronic toxicity test using Ceriodaphnia and fathead minnows (including Microtox IC metric) 2 = 96-hour Multiple Concentration Acute Lethality Test Using Rainbow Trout


Sample Location


EMSC Diversion Outlet


Flow (m3) pH TSS

(mg/L) Flow (m3)


1-Mar-13 8.0 2 8,776 7.9 5 4,579 2-Mar-13 8,776 12,210 3-Mar-13 4,937 1,526 4-Mar-13 7.9 7 5,119 7.9 6 5,851 5-Mar-13 8.0 2 6,582 8.0 5 4,579 6-Mar-13 7.9 2 8,045 7.9 8 9,666 7-Mar-13 7.9 4 8,776 Not Discharging 4,324 8-Mar-13 7.9 5 7,496 7.9 6 8,140 9-Mar-13 3,108 1,781

10-Mar-13 8,776 6,741 11-Mar-13 8.0 2 7,405 8.0 5 5,724 12-Mar-13 Not Discharging 1,463 8.0 3 4,579 13-Mar-13 8.0 1 3,291 8.2 3 6,614 14-Mar-13 7.8 5 8,776 7.8 5 10,175 15-Mar-13 8.0 1 8,776 Not Discharging 0 16-Mar-13 3,108 7,631 17-Mar-13 5,668 5,088 18-Mar-13 8.1 4 8,776 8.1 5 6,105 19-Mar-13 8.0 <1 5,485 8.0 2 5,851 20-Mar-13 Not Discharging 914 7.9 5 4,579 21-Mar-13 8.0 <1 8,776 8.1 3 10,938 22-Mar-13 8.1 9 8,776 8.0 4 3,053 23-Mar-13 4,662 12,019 24-Mar-13 3,291 4,507 25-Mar-13 8.0 18 7,862 7.9 4 11,519 26-Mar-13 8.0 14 2,560 7.9 4 5,008 27-Mar-13 Not Discharging 0 7.7 4 12,019 28-Mar-13 Not Discharging 0 7.9 8 2,504 29-Mar-13 * * 0 * * 10,517 30-Mar-13 0 3,005 31-Mar-13 3,053 12,019


*statutory holiday

Weekly Parameter


CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date 5-Mar-13 5-Mar-13 19-Mar-13 19-Mar-13 26-Mar-13 26-Mar-13 Anions Alkalinity (Total as CaCO3) (mg/L) 630 450 630 440 585 426 Alkalinity (PP as CaCO3) (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 Bicarbonate (mg/L) 770 550 770 530 714 520 Carbonate (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 Chloride (mg/L) 120 48 36 53 37 51 35 Sulphate (mg/L) 72 42 83 44 84 39 Cations (Dissolved) Calcium (mg/L) 62 51 65 54 61 49.3 Iron (mg/L) 0.3 <0.060 <0.060 <0.060 <0.060 <0.01 <0.01 Magnesium (mg/L) 14.0 13.0 14.0 14.0 13.9 13.5 Manganese (mg/L) 0.20 0.10 0.22 0.12 0.20 0.01 Potassium (mg/L) 6.6 5.3 6.5 5.7 3.3 3.4 Sodium (mg/L) 250 130 240 140 221 133 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 4 3 3 3 2 3 Misc. Inorganics Dissolved Inorganic Carbon (mg/L) 150 100 160 100 142 110 Sulphide (mg/L) <0.0020 <0.0020 0.0410 <0.0020 0.0290 <0.0020 Nutrients Dissolved Nitrate as N (mg/L) 13 0.022 0.053 0.013 <0.013 0.058 0.031 Dissolved Nitrite as N (mg/L) 0.06 <0.0099 <0.0099 0.013 <0.0099 <0.0099 <0.0099 Total Phosphate as P (mg/L) 0.18 0.10 0.17 0.10 0.21 0.11

Total Ammonia as N (mg/L) 2.5 daily 1.0 monthly ave

0.78 0.52 0.87 0.63 0.80 0.60

Dissolved Organic Carbon (mg/L) 6.9 7.6 6.1 6.1 10.0 10.0

Weekly Parameter


Temperature (OC)

Approval 26-02 Limit >5.0 daily >6.5 weekly ave

5-Mar-13 EMSC Diversion Inlet 8.5 2.9 5-Mar-13 EMSC Diversion Outlet 12.1 2.1 12-Mar-13 EMSC Diversion Outlet 12.3 1.2 13-Mar-13 EMSC Diversion Inlet 7.8 2.8 19-Mar-13 EMSC Diversion Inlet 7.1 2.9 19-Mar-13 EMSC Diversion Outlet 9.6 0.4 26-Mar-13 EMSC Diversion Inlet 6.5 3.6 26-Mar-13 EMSC Diversion Outlet 7.6 4.2


Temperature (OC)

5-Mar-13 Stanley Creek Upstream 13.7 0.2 6-Mar-13 Stanley Creek Upstream 13.2 0.1 7-Mar-13 Stanley Creek Upstream 12.3 0 12-Mar-13 Stanley Creek Upstream 13.3 0.2 13-Mar-13 Stanley Creek Upstream 13 0 14-Mar-13 Stanley Creek Upstream 13.6 0 19-Mar-13 Stanley Creek Upstream 11.3 0 20-Mar-13 Stanley Creek Upstream 13.8 0 21-Mar-13 Stanley Creek Upstream 12 0.2 26-Mar-13 Stanley Creek Upstream 11.6 0 27-Mar-13 Stanley Creek Upstream 10.8 0.2 28-Mar-13 Stanley Creek Upstream 10.5 0.3


Location Approval

26-02 Limit

CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream Date 13-Mar-13 12-Mar-13 12-Mar-13 12-Mar-13 Anions Alkalinity (PP as CaCO3) (mg/L) <0.50 <0.50 <0.50 <0.50 Alkalinity (Total as CaCO3) (mg/L) 630 410 230 160 Bicarbonate (mg/L) 770 510 280 190 Carbonate (mg/L) <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 Sulphate Dissolved (mg/L) 69 43 <1 8 Chloride Dissolved (mg/L) 120 49 35 3 <1 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 3 3 Misc. Inorganics Total Suspended Solids (mg/L) 50 1 3 <1 9 pH 6.0-9.5 8.0 8.0 7.6 7.9

Dissolved Oxygen (DO) >5.0 daily >6.5 weekly ave 7.8 12.3 6.1 13.3

Sulphide (mg/L) 0.034 <0.0020 Nutrients

Ammonia Total as N (mg/L) 2.5 daily 1.0 monthly ave 0.78 0.60 0.33 0.11

Inorganic Carbon Dissolved (mg/L) 150 98 58 40 Nitrate Dissolved as N (mg/L) 13 0.027 0.120 0.170 0.450 Nitrite Dissolved as N (mg/L) 0.06 0.011 0.011 0.012 <0.0099 Dissolved Organic Carbon (mg/L) 7.4 7.1 22.0 7.5 Phosphate Total as P (mg/L) 0.19 0.11 0.02 0.08 Physical Parameters Temperature (°C) 2.8 1.2 0.0 0.2


EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream Date 13-Mar-13 12-Mar-13 12-Mar-13 12-Mar-13 Dissolved Metals Aluminum (mg/L) 0.1 a 0.0055 <0.0030 Antimony (mg/L) <0.00060 <0.00060 Arsenic (mg/L) 0.005 <0.00020 <0.00020 Barium (mg/L) 0.11 0.078 Beryllium (mg/L) <0.0010 <0.0010 Boron (mg/L) 1.5 1.3 0.9 Cadmium (ug/L) 0.042 b 0.01 0.0077 Calcium (mg/L) 54 53 67 51 Chromium (mg/L) 0.0089 <0.0010 <0.0010 Cobalt (mg/L) <0.00030 <0.00030 Copper (mg/L) 0.003 b <0.00020 0.00028 Iron (mg/L) 0.3 <0.060 <0.060 0.26 0.07 Lead (mg/L) 0.0045 b <0.00020 <0.00020 Lithium (mg/L) 0.089 0.066 Magnesium (mg/L) 13 13 18 12 Manganese (mg/L) 0.18 0.11 0.33 0.20 Mercury (ug/L) 0.026 0.0025 <0.0020 Molybdenum (mg/L) 0.073 <0.00020 <0.00020 Nickel (mg/L) 0.118 b 0.00062 <0.00050 Phosphorus (mg/L) 0.15 <0.10 Potassium (mg/L) 6.7 5.3 1.3 1.3 Selenium (mg/L) 0.001 <0.00020 <0.00020 Silicon (mg/L) 4 4.7 Silver (mg/L) 0.0001 <0.00010 <0.00010 Sodium (mg/L) 250 140 11 4 Strontium (mg/L) 0.4 0.4 Sulphur (mg/L) 22 13 Thallium (mg/L) 0.0008 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 Titanium (mg/L) <0.0010 <0.0010 Uranium (mg/L) 0.015 0.00011 <0.00010 Vanadium (mg/L) <0.0010 <0.0010 Zinc (mg/L) 0.03 <0.0030 <0.0030 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)


EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 13-Mar-13 12-Mar-13 Total Metals Aluminum (mg/L) 0.1 a 0.032 0.032 Antimony (mg/L) <0.00060 <0.00060 Arsenic (mg/L) 0.005 <0.00020 <0.00020 Barium (mg/L) 0.10 0.09 Beryllium (mg/L) <0.0010 <0.0010 Boron (mg/L) 1.5 1.10 0.96 Cadmium (ug/L) 0.042 b 0.017 0.007 Calcium (mg/L) 47 56 Chromium (mg/L) 0.0089 <0.0010 <0.0010 Cobalt (mg/L) 0.00035 <0.00030 Copper (mg/L) 0.003 b <0.00020 <0.00020 Iron (mg/L) 0.3 0.16 0.67 Lead (mg/L) 0.0045 b <0.00020 <0.00020 Lithium (mg/L) 0.079 0.073 Magnesium (mg/L) 11 14 Manganese (mg/L) 0.16 0.15 Mercury (ug/L) 0.026 0.0035 <0.0020 Molybdenum (mg/L) 0.073 <0.00020 0.0004 Nickel (mg/L) 0.118 b 0.00095 <0.00050 Phosphorus (mg/L) 0.19 0.11 Potassium (mg/L) 5.7 5.5 Selenium (mg/L) 0.001 <0.00020 <0.00020 Silicon (mg/L) 3.6 5.2 Silver (mg/L) 0.0001 <0.00010 <0.00010 Sodium (mg/L) 210 150 Strontium (mg/L) 0.34 0.43 Sulphur (mg/L) 19 14 Thallium (mg/L) 0.0008 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 Titanium (mg/L) 0.0011 0.0015 Uranium (mg/L) 0.015 0.0001 <0.00010 Vanadium (mg/L) <0.0010 0.0011 Zinc (mg/L) 0.03 0.0063 0.0043

a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)


EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 13-Mar-13 12-Mar-13 Extractable Hydrocarbons F2 (C10-C16 Hydrocarbons) (mg/L) <0.10 <0.10 F3 (C16-C34 Hydrocarbons) (mg/L) <0.20 <0.20 Volatiles Benzene (ug/L) 370 <0.40 <0.40 Toluene (ug/L) 2 <0.40 <0.40 Ethylbenzene (ug/L) 90 <0.40 <0.40 o-Xylene (ug/L) <0.40 <0.40 m&p-Xylenes (ug/L) <0.80 <0.80 Xylenes (Total) (ug/L) <0.80 <0.80 F1 (C06-C10) - BTEX Purgeable (ug/L) <100 <100 Misc. Organics Naphthenic Acids (mg/L) 7.5 4.1


EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 13-Mar-13 12-Mar-13 Polycyclic Aromatic Hydrocarbons Acenaphthene (ug/L) 5.8 <0.10 <0.10 Acenaphthylene (ug/L) <0.10 <0.10 Acridine (ug/L) 4.4 <0.20 <0.20 Anthracene (ug/L) 0.012 <0.010 <0.010 Benzo(a)anthracene (ug/L) 0.018 <0.0085 <0.0085 Benzo(b&j)fluoranthene (ug/L) <0.0085 <0.0085 Benzo(k)fluoranthene (ug/L) <0.0085 <0.0085 Benzo(g,h,I)perylene (ug/L) <0.0085 <0.0085 Benzo(c)phenanthrene (ug/L) <0.050 <0.050 Benzo(a)pyrene (ug/L) 0.015 <0.0075 <0.0075 Benzo(e)pyrene (ug/L) <0.050 <0.050 Chrysene (ug/L) <0.0085 <0.0085 Dibenz(a,h)anthracene (ug/L) <0.0075 <0.0075 Fluoranthene (ug/L) 0.04 <0.040 <0.040 Fluorene (ug/L) 3 <0.050 <0.050 Indeno(1,2,3-cd)pyrene (ug/L) <0.0085 <0.0085 2-Methylnaphthalene (ug/L) 0.12 <0.10 Naphthalene (ug/L) 1.1 0.42 <0.10 Phenanthrene (ug/L) 0.4 <0.050 <0.050 Perylene (ug/L) <0.050 <0.050 Pyrene (ug/L) 0.025 <0.020 <0.020 Quinoline (ug/L) 3.4 <0.20 <0.20

Bioassay Results

Location Approval

26-02 Limit

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream Date 13-Mar-13 12-Mar-13 12-Mar-13 BioAssay Ceriodaphnia dubia Chronic Bioassay LC50 (%) 82 >100 >100 Ceriodaphnia dubia Chronic Bioassay LC25 (%) 64 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC50 (%) 70 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC25 (%) 26 16 >100 Fathead Minnow Chronic Bioassay LC50 (%) >100 >100 >100 Fathead Minnow Chronic Bioassay LC25 (%) >100 >100 >100 Fathead Minnow Chronic Bioassay IC50 (%) >100 >100 >100 Fathead Minnow Chronic Bioassay IC25 (%) >100 >100 >100 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 96 hr Rainbow Trout Screen (% Survival at 100% discharge sample) 100 100 100

Microtox IC50 (15 min, 15C) (%) >91 >91 >91 Microtox IC20 (15 min, 15C) (%) 65 >91 >91

Mildred Lake Mine Comments Mildred Lake Mine site was not discharging water during the month of March.

Aurora North Mine Comments April 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of: The water level at the EMSC Outlet was too low to discharge on April 5th. EMSC Horizontal Well 5B discharged into the EMSC Outlet as of April 7th. Pond #1-05 (CP) Diversion discharge to EMSC Inlet was re-instated on April 26th. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River


1 = chronic toxicity test using Ceriodaphnia and Fathead Minnows (including Microtox IC metric) 2 = 96-hour multiple concentration acute lethality test using Rainbow Trout


Sample Location EMSC Diversion Inlet EMSC Diversion Outlet CP Diversion to EMSC Inlet


Flow (m3) pH TSS

(mg/L) Flow (m3) pH TSS

(mg/L) Flow (m3)

Approval 26-02 Limit 6.0 to 9.5 50 6.0 to 9.5 50 6.0 to 9.6 50

1-Apr-13 8.0 2 6105 7.8 13 11018

Not Discharging

0 2-Apr-13 8.0 5 6105 8.0 14 10767 0 3-Apr-13 7.9 13 5851 7.9 24 2504 0 4-Apr-13 8.0 5 6105 7.9 18 10267 0 5-Apr-13 7.9 5 6105 Not Discharging 5008 0 6-Apr-13 6105 4507 0 7-Apr-13 6105 6023 0 8-Apr-13 8.0 3 6105 7.9 3 9896

Not Discharging

0 9-Apr-13 8.4 2 6105 8.3 9 13254 0

10-Apr-13 7.9 4 6105 7.9 17 13594 0 11-Apr-13 7.9 4 6105 7.9 13 14348 0 12-Apr-13 7.9 9 6105 7.9 12 7999 0 13-Apr-13 6105 14698 0 14-Apr-13 6105 14776 0 15-Apr-13 7.9 7 6105 7.9 14 14711

Not Discharging

0 16-Apr-13 8.1 8 6105 8.0 13 9211 0 17-Apr-13 7.9 3 6105 7.9 10 14713 0 18-Apr-13 7.9 3 6105 7.8 1 6460 0 19-Apr-13 8.0 3 6105 8.0 11 14637 0 20-Apr-13 6105 14641 0 21-Apr-13 6105 8588 0 22-Apr-13 7.9 7 6105 7.8 16 14702

Not Discharging

0 23-Apr-13 7.9 4 6105 7.8 9 8897 0 24-Apr-13 7.9 2 6105 7.8 17 12636 0 25-Apr-13 8.0 1 8649 7.9 1 9836 2544 26-Apr-13 7.8 39 12147 7.9 10 14610 7.7 51 6042 27-Apr-13 7.8 21 20732 6971 14627 28-Apr-13 7.9 14 18188 12712 12083 29-Apr-13 8.0 4 7059 7.9 11 14423 7.8 27 954 30-Apr-13 8.0 17 21368 8.0 9 6434 8.0 25 15263

Totals 234411 322845 51512 Total Flow 557256

April Weekly Sampling Results


CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date

2-Apr-13 2-Apr-13 16-Apr-13 16-Apr-13 23-Apr-13 23-Apr-13 30-Apr-13 30-Apr-13

Anions

Alkalinity (Total as CaCO3) (mg/L) 602 427 605 430 611 353 517 435 Alkalinity (PP as CaCO3) (mg/L) <5 <5 <5 <5 <5 <5 <5 <5 Bicarbonate (mg/L) 734 522 738 525 745 430 630 530 Carbonate (mg/L) <5 <5 <5 <5 <5 <5 <5 <5 Hydroxide (OH) (mg/L) <5 <5 <5 <5 <5 <5 <5 <5 Chloride (mg/L) 120 51 35 55 38 57 24 88 40 Sulphate (mg/L) 80 45 89 59 90 56 350 48 Cations (Dissolved) Calcium (mg/L) 49.3 42.5 61.6 54.0 64.5 65.1 142.0 48.2 Iron (mg/L) 0.3 <0.01 <0.01 <0.01 0.01 <0.01 0.02 0.03 <0.01 Magnesium (mg/L) 12.2 12.9 13.3 13.8 13.4 15.0 24.6 11.6 Manganese (mg/L) 0.149 0.084 0.197 0.128 0.162 0.102 0.349 0.090 Potassium (mg/L) 4.9 4.7 5.5 5.1 4.6 3.2 5.0 4.2 Sodium (mg/L) 232 147 241 152 240 100 201 141 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 2 2 3 <2 <2 <2 <2 2 Misc. Inorganics Dissolved Inorganic Carbon (mg/L) 140 98 109 105 119 61 122 119 Sulphide (mg/L) <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 0.0056 <0.0020 <0.0020 Nutrients Dissolved Nitrate as N (mg/L) 13 0.041 0.051 0.033 0.035 0.035 0.061 0.29 0.058 Dissolved Nitrite as N (mg/L) 0.06 <0.0099 <0.0099 <0.0099 0.0100 <0.0099 <0.0099 0.0560 0.0350 Total Phosphate as P (mg/L) 0.23 0.14 0.19 0.12 0.20 0.12 0.13 0.14

Total Ammonia as N (mg/L) 2.5 daily 1.0 monthly

0.8 0.6 0.8 0.5 0.6 0.3 0.4 0.3

Dissolved Organic Carbon (mg/L) 9 10 11 11 11 9 14 11 Physical Parameters Temperature (°C) 4.8 3.3 5.1 4.3 5.7 4.8 3.1 3.5

Dissolved Oxygen (DO) (mg/L) >5 daily >6.5 weekly ave

9.5 11.9 7.9 9.4 8.1 12.7 13.2 12.8


Location Approval

26-02 Limit

CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Date

9-Apr-13 9-Apr-13 9-Apr-13 9-Apr-13 9-Apr-13 Anions Alkalinity (PP as CaCO3) (mg/L) 3.9 <0.50 <0.50 <0.50 <0.50 Alkalinity (Total as CaCO3) (mg/L) 630 420 210 290 160 Bicarbonate (mg/L) 760 520 260 350 190 Carbonate (mg/L) 4.7 <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Sulphate Dissolved (mg/L) 68 63 <1.0 <1.0 8.7 Chloride Dissolved (mg/L) 120 52 39 3.0 3.4 1.1 Demand Parameters Biochemical Oxygen Demand (mg/L) 7

3 2 Misc. Inorganics Total Suspended Solids (mg/L) 50 2 9 6 16 14

pH 6.0-9.5 8.4 8.3 8.1 7.7 8.2

Dissolved Oxygen (DO) (mg/L) >5 daily >6.5 weekly ave 10.8 12.6 16.0 10.5 14.6

Sulphide (mg/L) 0.0073 0.0022 Nutrients

Ammonia Total as N (mg/L) 2.5 daily 1.0 monthly ave 0.80 0.58 0.38 0.62 0.10

Inorganic Carbon Dissolved (mg/L) 160 100 53 77 37 Nitrate Dissolved as N (mg/L) 13 0.049 0.120 0.400 0.350 0.610 Nitrite Dissolved as N (mg/L) 0.06 0.016 0.010 0.010 0.015 0.023 Dissolved Organic Carbon (mg/L) 6.0 7.2 21 16 6.8 Phosphate Total as P (mg/L) 0.160 0.071 0.016 0.053 0.065 Physical Parameters Temperature (°C) 6.4 3.1 2.4 0.2 0.7


EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Date 9-Apr-13 9-Apr-13 9-Apr-13 9-Apr-13 9-Apr-13 Dissolved Metals Aluminum (mg/L) 0.1 a <0.0030 <0.0030 Antimony (mg/L) <0.00060 <0.00060 Arsenic (mg/L) 0.005 <0.00020 <0.00020 Barium (mg/L) 0.12 0.075 Beryllium (mg/L) <0.0010 <0.0010 Boron (mg/L) 1.5 1.3 0.95 Cadmium (ug/L) 0.042 b <0.0050 <0.0050 Calcium (mg/L) 56 60 58 84 49 Chromium (mg/L) 0.0089 <0.0010 <0.0010 Cobalt (mg/L) 0.0004 0.00032 Copper (mg/L) 0.003 b <0.00020 <0.00020 Iron (mg/L) 0.3 <0.060 <0.060 0.2 0.095 0.13 Lead (mg/L) 0.0045 b <0.00020 <0.00020 Lithium (mg/L) 0.1 0.071 Magnesium (mg/L) 13 15 15 21 11 Manganese (mg/L) 0.18 0.16 0.25 0.41 0.17 Mercury (ug/L) 0.026 <0.0020 <0.0020 Molybdenum (mg/L) 0.073 0.00034 <0.00020 Nickel (mg/L) 0.118 b 0.00085 0.00052 Phosphorus (mg/L) 0.21 <0.10 Potassium (mg/L) 6.5 5.4 1.0 1.3 1.2 Selenium (mg/L) 0.001 <0.00020 <0.00020 Silicon (mg/L) 3.8 4.2 Silver (mg/L) 0.0001 <0.00010 <0.00010 Sodium (mg/L) 250 140 9.4 7.8 3.9 Strontium (mg/L) 0.4 0.42 Sulphur (mg/L) 21 19 Thallium (mg/L) 0.0008 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 Titanium (mg/L) <0.0010 <0.0010 Uranium (mg/L) 0.015 0.00012 <0.00010 Vanadium (mg/L) <0.0010 <0.0010 Zinc (mg/L) 0.03 <0.0030 <0.0030




EMSC Diversion

Outlet CP Diversion

Date 9-Apr-13 9-Apr-13 30-Apr-13 Total Metals Aluminum (mg/L) 0.1 a 0.046 0.044 0.27 Antimony (mg/L) <0.00060 <0.00060 <0.00060 Arsenic (mg/L) 0.005 <0.00020 <0.00020 0.00045 Barium (mg/L) 0.11 0.076 0.072 Beryllium (mg/L) <0.0010 <0.0010 <0.0010 Boron (mg/L) 1.5 1.2 0.92 0.57 Cadmium (ug/L) 0.042 b 0.018 0.016 0.014 Calcium (mg/L) 53 58 210 Chromium (mg/L) 0.0089 <0.0010 <0.0010 <0.0010 Cobalt (mg/L) 0.00049 0.00045 0.0016 Copper (mg/L) 0.003 b 0.00058 0.00074 0.00083 Iron (mg/L) 0.3 0.24 0.48 0.57 Lead (mg/L) 0.0045 b <0.00020 <0.00020 0.00024 Lithium (mg/L) 0.091 0.066 0.080 Magnesium (mg/L) 12 14 51 Manganese (mg/L) 0.17 0.16 0.70 Mercury (ug/L) 0.026 0.0031 0.0022 0.0037 Molybdenum (mg/L) 0.073 <0.00020 <0.00020 0.00057 Nickel (mg/L) 0.118 b 0.0013 0.0009 0.0056 Phosphorus (mg/L) 0.18 <0.10 <0.10 Potassium (mg/L) 6.0 5.2 7.0 Selenium (mg/L) 0.001 <0.00020 <0.00020 0.00020 Silicon (mg/L) 3.7 4.2 6.5 Silver (mg/L) 0.0001 <0.00010 <0.00010 <0.00010 Sodium (mg/L) 230 140 180 Strontium (mg/L) 0.36 0.39 0.75 Sulphur (mg/L) 20 19 180 Thallium (mg/L) 0.0008 <0.00020 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 <0.0010 Titanium (mg/L) 0.0021 0.0021 0.0087 Uranium (mg/L) 0.015 0.00013 0.00011 0.0015 Vanadium (mg/L) <0.0010 <0.0010 <0.0010 Zinc (mg/L) 0.03 0.013 0.011 0.011




EMSC Diversion Outlet CP Diversion

Date 9-Apr-13 9-Apr-13 30-Apr-13 Extractable Hydrocarbons F2 (C10-C16 Hydrocarbons) (mg/L) 0.15 <0.10 <0.10 F3 (C16-C34 Hydrocarbons) (mg/L) 0.29 0.20 <0.20 Volatiles Benzene (ug/L) 370 <0.40 <0.40 <0.40 Toluene (ug/L) 2 <0.40 <0.40 <0.40 Ethylbenzene (ug/L) 90 <0.40 <0.40 <0.40 o-Xylene (ug/L) <0.40 <0.40 <0.40 m&p-Xylenes (ug/L) <0.80 <0.80 <0.80 Xylenes (Total) (ug/L) <0.80 <0.80 <0.80 F1 (C06-C10) - BTEX Purgeable (ug/L) <100 <100 <100 Misc. Organics Naphthenic Acids (mg/L) 6.3 <1.0 1.8



EMSC Diversion Outlet CP Diversion

Date 9-Apr-13 9-Apr-13 30-Apr-13 Polycyclic Aromatic Hydrocarbons Acenaphthene (ug/L) 5.8 <0.10 <0.10 <0.10 Acenaphthylene (ug/L) <0.10 <0.10 <0.10 Acridine (ug/L) 4.4 <0.20 <0.20 <0.20 Anthracene (ug/L) 0.012 <0.010 <0.010 <0.010 Benzo(a)anthracene (ug/L) 0.018 <0.0085 <0.0085 <0.0085 Benzo(b&j)fluoranthene (ug/L) <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene (ug/L) <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene (ug/L) <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene (ug/L) <0.050 <0.050 <0.050 Benzo(a)pyrene (ug/L) 0.015 <0.0075 <0.0075 <0.0075 Benzo(e)pyrene (ug/L) <0.050 <0.050 <0.050 Chrysene (ug/L) <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene (ug/L) <0.0075 <0.0075 <0.0075 Fluoranthene (ug/L) 0.04 <0.040 <0.040 <0.040 Fluorene (ug/L) 3 <0.050 <0.050 <0.050 Indeno(1,2,3-cd)pyrene (ug/L) <0.0085 <0.0085 <0.0085 2-Methylnaphthalene (ug/L) <0.10 <0.10 <0.10 Naphthalene (ug/L) 1.1 <0.10 <0.10 <0.10 Phenanthrene (ug/L) 0.4 <0.050 <0.050 <0.050 Perylene (ug/L) <0.050 <0.050 <0.050 Pyrene (ug/L) 0.025 <0.020 <0.020 <0.020 Quinoline (ug/L) 3.4 <0.20 <0.20 <0.20

Bioassay Results


EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

CP Diversion

Date 9-Apr-13 9-Apr-13 9-Apr-13 30-Apr-13 BioAssay Ceriodaphnia dubia Chronic Bioassay LC50 (%) >100 Ceriodaphnia dubia Chronic Bioassay LC25 (%) >100 Ceriodaphnia dubia Chronic Bioassay IC50 (%) >100 Ceriodaphnia dubia Chronic Bioassay IC25 (%) >100 Fathead Minnow Chronic Bioassay LC50 (%) >100 Fathead Minnow Chronic Bioassay LC25 (%) >100 Fathead Minnow Chronic Bioassay IC50 (%) >100 Fathead Minnow Chronic Bioassay IC25 (%) >100 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 >100 96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 >100 96 hr Rainbow Trout Screen (% Survival in 100% discharge sample) 100 100 100 100


Mildred Lake Mine Comments Mildred Lake Mine site was not discharging water during the month of April.

Aurora North Mine Comments May 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of: The water level at the EMSC Outlet was too low to discharge on May 21st and 28th. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River


1 = Chronic toxicity test using ceriodaphnia and fathead minnows (including Microtox IC metric) 2 = 96-hour multiple concentration acute lethality test using rainbow trout


Sample Location EMSC Inlet EMSC Outlet CP Diversion to EMSC Inlet

Sample Date pH TSS

(mg/L) Flow

(m3/day) pH TSS (mg/L)

Flow (m3/day) pH TSS

(mg/L) Flow

(m3/day) Approval

26-02 Limit 6.0 to 9.5 50 6.0 to 9.5 50

1-May-13 7.9 2 7,059 7.7 <1 8,514 Not Discharging

954 2-May-13 7.8 4 6,105 7.9 11 8,013 - 3-May-13 7.9 3 6,105 7.9 14 1,502 - 4-May-13 6,105 12,019 - 5-May-13 19,301 6,636 13,196 6-May-13 8.0 22 21,368 7.9 10 7,512 7.9 24 15,263 7-May-13 8.3 7 18,824 8.3 13 8,263 8.2 19 12,719 8-May-13 7.9 5 6,105 7.9 35 12,019 7.9 40 - 9-May-13 7.8 1 6,105 7.8 8 5,509

Not Discharging -

10-May-13 7.8 3 7,695 7.8 9 8,263 1,590 11-May-13 10,875 10,893 4,770 12-May-13 6,105 12,019 - 13-May-13 8.0 11 20,096 7.9 7 3,005 7.9 20 13,991 14-May-13 8.2 6 7,377 8.2 11 12,019

Not Discharging 1,272

15-May-13 8.0 1 6,105 7.9 3 3,506 - 16-May-13 8.0 15 20,414 7.8 9 12,019 8.0 13 14,309 17-May-13 7.9 14 15,008 7.9 11 6,135 7.9 20 8,903 18-May-13 6,105 7,763 - 19-May-13 8,967 5,384 2,862 20-May-13 * * 18,824 * * 10,267 * * 12,719 21-May-13 8.4 <1 6,105 Not Discharging 1,002

Not Discharging -

22-May-13 7.9 5 6,105 8.2 13 7,763 - 23-May-13 7.9 7 12,464 8.0 14 9,158 7.9 20 6,359 24-May-13 7.9 2 7,377 7.7 <1 0 Not Discharging 1,272 25-May-13 6,105 9,412 - 26-May-13 8,649 1,526 2,544 27-May-13 7.9 5 10,557 7.9 10 10,938 7.8 10 4,452 28-May-13 8.3 <1 6,105 Not Discharging 1,781

Not Discharging -

29-May-13 8.0 <1 6,105 8.2 7 4,324 - 30-May-13 7.9 3 6,105 7.9 10 7,759 - 31-May-13 7.8 <1 9,762 7.7 2 4,579 7.8 14 3,657

Total 310,087 219,502 120,832 Total Flow (m3) 529,589

*Statutory Holiday

May Weekly Sampling Results


CCME

Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

Sample Date

7-May-13 7-May-13 7-May-13 21-May-13 22-May-13 23-May-13 28-May-13 29-May-13 31-May-13 Anions Alkalinity (Total as CaCO3) (mg/L) 370 510 440 640 431 454 560 410 414 Alkalinity (PP as CaCO3) (mg/L) <0.5 <0.5 0.8 9.0 <5.0 <5.0 <0.5 <0.5 <5 Bicarbonate (mg/L) 450 630 540 760 526 554 680 500 505 Carbonate (mg/L) <0.50 <0.50 1 11 <5 <5 <0.50 <0.50 <5 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 <5 <5 <0.50 <0.50 <5 Chloride (mg/L) 120 71 63 36 55 41 110 48 34 96 Sulphate (mg/L) 520 260 44 90 64 640 100 62 560 Cations (Dissolved) Calcium (mg/L) 210 130 60 56 55.7 153 65 65 172 Iron (mg/L) 0.3 <0.060 <0.060 <0.060 <0.060 0.02 <0.01 <0.060 <0.060 0.02 Magnesium (mg/L) 50 31 16 13 13.3 44.2 15 15 54 Manganese (mg/L) 0.74 0.45 0.046 0.017 0.059 0.169 0.17 0.11 0.004 Potassium (mg/L) 7.1 7.4 6.6 6.4 4.7 6.8 6.3 4.7 8 Sodium (mg/L) 160 230 170 240 148 203 230 120 207 Demand Parameters Biochemical Oxygen Demand (mg/L) 7 3 2 3 <2 2 <2 <2 3 <2 Misc. Inorganics Dissolved Inorganic Carbon (mg/L) 85 120 99 140 113 117 140 98 103 Sulphide (mg/L) <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 Nutrients Nitrate as N (mg/L) 13 0.076 0.032 0.0088 0.012 <0.0030 0.084 0.0097 0.043 <0.0030 Nitrite as N (mg/L) 0.06 0.0066 0.0039 <0.0030 <0.0030 <0.0030 0.0081 <0.0030 <0.0030 <0.0030 Total Phosphate as P (mg/L) 0.03 0.1 0.11 0.14 0.13 0.03 0.12 0.08 <0.10


0.19 0.28 0.14 0.25 <0.10 <0.10 0.24 0.085 <0.1

Dissolved Organic Carbon (mg/L) 12 11 9 8.2 11 14 12 7.6 15 Physical Parameters Temperature (°C) 7.5 10.1 10.5 14.3 12.5 15.8 14.7 10.9 18.5

Dissolved Oxygen (D.O.) (mg/L) >5 daily >6.5 weekly ave

11.3 9.6 11.0 5.5 9.7 7.8 8.6 9.3 9.9


Location

Approval 26-02 Limit

CCME Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream Date

16-May-13 14-May-13 14-May-13 15-May-13 14-May-13 Anions Alkalinity (PP as CaCO3) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Alkalinity (Total as CaCO3) (mg/L) 360 610 430 81 140 Bicarbonate (mg/L) 440 750 520 98 170 Carbonate (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 Sulphate Dissolved (mg/L) 530 100 48 <1.0 10 Chloride Dissolved (mg/L) 120 70 54 35 3 1 Demand Parameters Biochemical Oxygen Demand (mg/L) 7

<2 <2 4 Misc. Inorganics Total Suspended Solids (mg/L) 50

13 6 11 <1 5 pH 6.0-9.5

8.0 8.2 8.2 7.6 8.0

Dissolved Oxygen (D.O.) (mg/L) >5 daily >6.5 weekly ave 8.5 7.5 9.6 6.6 8.9

Sulphide (mg/L) <0.0020 <0.0020 0.0031 Nutrients

Ammonia Total as N (mg/L) 2.5 daily 1.0 monthly 0.120 0.370 <0.050 0.051 <0.050

Inorganic Carbon Dissolved (mg/L) 90 150 98 18 34 Nitrate as N (mg/L) 13 <0.0030 0.0097 <0.013 <0.0030 0.0031 Nitrite as N (mg/L) 0.06 <0.0030 <0.0030 0.01 <0.0030 0.018 Dissolved Organic Carbon (mg/L) 15.0 8.4 8.4 22.0 10.0 Phosphate Total as P (mg/L) 0.018 0.140 0.100 0.023 0.059 Physical Parameters Temperature (°C) 16.2 11.7 8.7 11.9 11.5


CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River Downstream

Stanley Creek

Upstream Date 16-May-13 14-May-13 14-May-13 15-May-13 14-May-13 Dissolved Metals Aluminum (mg/L) 0.1 a <0.0030 <0.0030 <0.0030 Antimony (mg/L) <0.0006 <0.0006 <0.0006 Arsenic (mg/L) 0.005 0.00038 <0.00020 <0.00020 Barium (mg/L) 0.076 0.150 0.085 Beryllium (mg/L) <0.0010 <0.0010 <0.0010 Boron (mg/L) 1.5 0.46 1.20 1.00 Cadmium (µg/L) 0.042 b <0.0050 <0.0050 <0.0050 Calcium (mg/L) 210 73 58 25 46 Chromium (mg/L) 0.0089 <0.0010 <0.0010 <0.0010 Cobalt (mg/L) 0.0011 0.00033 <0.00030 Copper (mg/L) 0.003 b 0.0006 <0.00020 <0.00020 Iron (mg/L) 0.3 0.094 <0.060 <0.060 0.150 0.180 Lead (mg/L) 0.0045 b <0.00020 <0.00020 <0.00020 Lithium (mg/L) 0.067 0.1 0.073 Magnesium (mg/L) 50 17 15 7 10 Manganese (mg/L) 0.610 0.230 0.086 0.007 0.063 Mercury (µg/L) 0.026 <0.0020 <0.0020 <0.0020 Molybdenum (mg/L) 0.073 0.00062 0.00031 <0.00020 Nickel (mg/L) 0.118 b 0.0052 0.00097 0.00063 Phosphorus (mg/L) <0.10 0.17 0.13 Potassium (mg/L) 7.2 6.9 6.4 1.5 1.5 Selenium (mg/L) 0.001 0.00022 <0.00020 <0.00020 Silicon (mg/L) 5.1 3.9 4.7 Silver (mg/L) 0.0001 <0.00010 <0.00010 <0.00010 Sodium (mg/L) 160.0 260.0 160.0 6.9 4.1 Strontium (mg/L) 0.78 0.46 0.46 Sulphur (mg/L) 160 32 15 Thallium (mg/L) 0.0008 <0.0002 <0.0002 <0.0002 Tin (mg/L) <0.001 <0.001 <0.001 Titanium (mg/L) <0.001 <0.001 <0.001 Uranium (mg/L) 0.015 0.0018 <0.0001 <0.0001 Vanadium (mg/L) <0.001 <0.001 <0.001 Zinc (mg/L) 0.03 0.0083 <0.0030 <0.0030


Location CCME Guideline CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 16-May-13 14-May-13 14-May-13 Total Metals Aluminum (mg/L) 0.1 a <0.003 0.054 0.062 Antimony (mg/L) <0.0006 <0.0006 <0.0006 Arsenic (mg/L) 0.005 <0.00020 0.00021 <0.00020 Barium (mg/L) 0.072 0.140 0.083 Beryllium (mg/L) <0.001 <0.001 <0.001 Boron (mg/L) 1.5 0.45 1.10 0.98 Cadmium (µg/L) 0.042 b <0.005 0.023 0.021 Calcium (mg/L) 190 69 54 Chromium (mg/L) 0.0089 <0.0010 <0.0010 <0.0010 Cobalt (mg/L) <0.00030 0.00049 <0.00030 Copper (mg/L) 0.003 b <0.00020 0.00028 0.00027 Iron (mg/L) 0.3 0.39 0.23 0.75 Lead (mg/L) 0.0045 b <0.0002 <0.0002 <0.0002 Lithium (mg/L) 0.066 0.092 0.068 Magnesium (mg/L) 47 16 14 Manganese (mg/L) 0.65 0.23 0.14 Mercury (µg/L) 0.026 0.005 0.002 <0.002 Molybdenum (mg/L) 0.073 <0.0002 <0.0002 <0.0002 Nickel (mg/L) 0.118 b <0.0005 0.0012 0.0006 Phosphorus (mg/L) <0.10 0.23 0.16 Potassium (mg/L) 7.1 6.5 5.8 Selenium (mg/L) 0.001 <0.0002 <0.0002 <0.0002 Silicon (mg/L) 5.4 3.8 4.7 Silver (mg/L) 0.0001 <0.0001 <0.0001 <0.0001 Sodium (mg/L) 150 240 150 Strontium (mg/L) 0.73 0.42 0.42 Sulphur (mg/L) 160 31 15 Thallium (mg/L) 0.0008 <0.0002 <0.0002 <0.0002 Tin (mg/L) <0.001 <0.001 <0.001 Titanium (mg/L) <0.0010 0.0027 0.0021 Uranium (mg/L) 0.015 <0.00010 0.00015 <0.00010 Vanadium (mg/L) <0.001 <0.001 <0.001 Zinc (mg/L) 0.03 <0.0030 0.0046 0.0091


Location CCME Guideline CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 16-May-13 14-May-13 14-May-13 Extractable Hydrocarbons F2 (C10-C16 Hydrocarbons) (mg/L) <0.10 <0.10 <0.10 F3 (C16-C34 Hydrocarbons) (mg/L) 0.3 <0.20 <0.20 Volatiles Benzene (µg/L) 370 <0.40 <0.40 <0.40 Toluene (µg/L) 2 <0.40 <0.80 <0.80 Ethylbenzene (µg/L) 90 <0.40 <0.40 <0.40 o-Xylene (µg/L) <0.40 <0.40 <0.40 m&p-Xylenes (µg/L) <0.80 <0.80 <0.80 Xylenes (Total) (µg/L) <0.80 <0.80 <0.80 F1 (C06-C10) - BTEX Purgeable (µg/L) <100 <100 <100 Misc. Organics Naphthenic Acids (mg/L) <1.0 4.6 3.2


CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 16-May-13 14-May-13 14-May-13 Polycyclic Aromatic Hydrocarbons

Acenaphthene (µg/L) 5.8 <0.10 <0.10 <0.10 Acenaphthylene (µg/L) <0.10 <0.10 <0.10 Acridine (µg/L) 4.4 <0.20 <0.20 <0.20 Anthracene (µg/L) 0.012 <0.010 <0.010 <0.010 Benzo(a)anthracene (µg/L) 0.018 <0.0085 <0.0085 <0.0085 Benzo(b&j)fluoranthene (µg/L) <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene (µg/L) <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene (µg/L) <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene (µg/L) <0.050 <0.050 <0.050 Benzo(a)pyrene (µg/L) 0.015 <0.0075 <0.0075 <0.0075 Benzo(e)pyrene (µg/L) <0.050 <0.050 <0.050 Chrysene (µg/L) <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene (µg/L) <0.0075 <0.0075 <0.0075 Fluoranthene (µg/L) 0.04 <0.040 <0.040 <0.040 Fluorene (µg/L) 3 <0.050 <0.050 <0.050 Indeno(1,2,3-cd)pyrene (µg/L) <0.0085 <0.0085 <0.0085 2-Methylnaphthalene (µg/L) <0.10 <0.10 <0.10 Naphthalene (µg/L) 1.1 <0.10 <0.10 <0.10 Phenanthrene (µg/L) 0.4 <0.050 <0.050 <0.050 Perylene (µg/L) <0.050 <0.050 <0.050 Pyrene (µg/L) 0.025 <0.020 <0.020 <0.020 Quinoline (µg/L) 3.4 <0.20 <0.20 <0.20

Bioassay Results

Location Approval

26-02 Limit

CP Diversion EMSC

Diversion Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream Date 16-May-13 14-May-13 14-May-13 15-May-13 Bioassay Ceriodaphnia dubia Chronic Bioassay LC50 (%) >100 81 >100 >100 Ceriodaphnia dubia Chronic Bioassay LC25 (%) >100 62 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC50 (%) >100 80 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC25 (%) >100 33 >100 >100 Fathead Minnow Chronic Bioassay LC50 (%) >100 >100 >100 >100 Fathead Minnow Chronic Bioassay LC25 (%) >100 >100 >100 >100 Fathead Minnow Chronic Bioassay IC50 (%) >100 >100 >100 >100 Fathead Minnow Chronic Bioassay IC25 (%) >100 >100 >100 >100 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 >100 96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 >100 96 hr Rainbow Trout Screen (% survival at 100% discharge concentration) 100 100 100 100

Microtox IC50 (15 min, 15C) (%) >91 >91 >91 >91 Microtox IC20 (15 min, 15C) (%) >91 >91 >91 >91

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of May.

Aurora North Mine Comments June 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of:

EMSC Inlet and EMSC Outlet was not discharging from June 10th to June 18th inclusive due to heavy rain volumes.

EMSC Inlet water level was too low for discharge on June 28th.



Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River




Sample Location EMSC Inlet EMSC Outlet CP Diversion to EMSC Inlet



(mg/L) Flow


Flow (m3/day)


1-Jun-13 5,342 10,469 0 2-Jun-13 6,105 2,580 0 3-Jun-13 7.9 4 19,778 7.9 5 10,046 7.7 9 13,673 4-Jun-13 7.8 5 11,511 7.9 1 10,867 7.8 13 5,406

5-Jun-13 8.0 2 6,105 8.0 10 9,419 Not Discharging 0

6-Jun-13 7.7 20 18,188 7.9 8 4,333 7.9 12 12,083 7-Jun-13 7.9 4 6,105 7.7 4 8,905 Not Discharging 0 8-Jun-13 572 5,860 0 9-Jun-13 0 8,514 0 10-Jun-13

Not Discharging

0

Not Discharging

0

Not Discharging

0 11-Jun-13 0 0 0 12-Jun-13 0 0 0 13-Jun-13 0 0 0 14-Jun-13 0 0 0 15-Jun-13 0 0 0 16-Jun-13 0 0 0 17-Jun-13

Not Discharging 0

Not Discharging 0

Not Discharging 0

18-Jun-13 0 0 0 19-Jun-13 8.0 4 19,333 7.9 3 12,957 8.1 5 13,991 20-Jun-13 7.8 8 13,737 7.8 5 8,867 7.9 5 7,631 21-Jun-13 7.8 2 21,368 7.8 5 8,858 7.8 18 15,263 22-Jun-13 14,690 11,393 8,585 23-Jun-13 8,649 9,473 2,544 24-Jun-13 7.8 6 18,506 7.8 7 9,348 7.9 4 12,401 25-Jun-13 7.7 7 6,105 7.8 11 14,682 Not Discharging 0 26-Jun-13 8.0 16 12,878 8.0 8 3,408 8.1 5 9,062 27-Jun-13 7.9 9 15,835 7.9 5 11,048 8.0 5 11,129 28-Jun-13 Not Discharging 3,816 7.9 5 12,412 Not Discharging 0 29-Jun-13 2,417 6,549 0 30-Jun-13 2,417 13,152 0

Total 213,456 193,142 111,768 Total Flow 406,598

Weekly Sampling Results


26-02 Limit

CCME Guideline CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet CP Diversion

Sample Date 4-Jun-13 4-Jun-13 4-Jun-13 25-Jun-13 25-Jun-13 26-Jun-13 Anions Alkalinity (Total as CaCO3) (mg/L) 459 457 235 629 383 396 Alkalinity (PP as CaCO3) (mg/L) <5 <5 <5 <5 <5 <5 Bicarbonate (mg/L) 561 557 287 767 467 483 Carbonate (mg/L) <5 <5 <5 <5 <5 <5 Hydroxide (OH) (mg/L) <5 <5 <5 <5 <5 <5 Chloride (mg/L) 120 110 110 <0.5 63 35 97 Sulphate (mg/L) 540 510 57 98 83 380 Cations (Dissolved) Calcium (mg/L) 153 150 68 85 83 157 Iron (mg/L) 0.3 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 Magnesium (mg/L) 48.6 47.4 16.8 22.3 16.5 48.8 Manganese (mg/L) <0.010 <0.001 0.152 <0.001 <0.001 0.082 Potassium (mg/L) 5.5 5.4 0.8 4.0 2.9 4.6 Sodium (mg/L) 213 211 14 230 97 140 Demand Parameters Biological Oxygen Demand (mg/L) 7 <2 <2 <2 <2 3 <2 Misc. Inorganics Dissolved Inorganic Carbon (mg/L) 129 133 63 183 94 105 Sulphide (mg/L) <0.0020 <0.0020 0.0180 <0.0020 <0.0020 <0.0020 Nutrients Dissolved Nitrate as N (mg/L) 13 0.140 <0.013 <0.013 0.013 <0.013 0.480 Dissolved Nitrite as N (mg/L) 0.06 <0.099 <0.0099 <0.0099 <0.0099 <0.0099 0.037 Total Phosphate as P (mg/L) <0.10 <0.10 <0.10 0.16 <0.10 <0.10


<0.1 <0.1 <0.1 0.5 <0.1 <0.1

Dissolved Organic Carbon (mg/L) 14 14 5 11 9 9 Physical Parameters Temperature (°C) 19.4 18.6 12.8 14.6 13.6 19.7

Dissolved Oxygen (D.O.) (mg/L) >5.0 daily >6.5 weekly ave

9.1 8.6 9.6 5.6 9.4 7.8


Location Approval

26-02 Limit

CCME

Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Date

19-Jun-13 19-Jun-13 19-Jun-13 18-Jun-13 25-Jun-13 18-Jun-13

Anions Alkalinity (PP as CaCO3) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Alkalinity (Total as CaCO3) (mg/L) 350 360 350 98 130 150 Bicarbonate (mg/L) 420 440 430 120 160 190 Carbonate (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) (mg/L) <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Sulphate Dissolved (mg/L) 610 420 110 <1.0 <1.0 21 Chloride Dissolved (mg/L)

120 75 46 27 3 3 2 Demand Parameters Biological Oxygen Demand (mg/L) 7 <2 <2 <2 Misc. Inorganics Total Suspended Solids (mg/L) 50 5 4 3 1 3 13 pH 6.0-9.5 8.1 8.0 7.9 7.8 7.7 8.0

Dissolved Oxygen (DO) >5.0 daily >6.5 weekly ave

9.4 8.5 8.5 6.0 3.6 8.3

Sulphide (mg/L) <0.0020 <0.0020 <0.0020 Nutrients

Ammonia Total as N (mg/L) 2.5 daily 1.0 monthly

<0.050 0.17 0.21 0.057 <0.050 0.054

Inorganic Carbon Dissolved (mg/L) 84 90 86 22 30 35 Nitrate Dissolved as N (mg/L) 13 0.13 0.08 0.022 0.024 0.044 0.025 Nitrite Dissolved as N (mg/L)

0.06 0.015 <0.0099 <0.0099 0.01 0.023 <0.0099 Dissolved Organic Carbon (mg/L) 15 11 8 26 28 29 Phosphate Total as P (mg/L) 0.011 0.047 0.062 0.023 0.063 0.110 Physical Parameters Temperature (°C) 17.6 17.0 19.4 16.5 18.6 19.2


CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Date 19-Jun-13 19-Jun-13 19-Jun-13 18-Jun-13 25-Jun-13 18-Jun-13 Dissolved Metals Aluminum (mg/L) 0.1 a 0.0079 0.0051 0.027 Antimony (mg/L) <0.00060 <0.00060 <0.00060 Arsenic (mg/L) 0.005 0.00064 0.00061 <0.00020 Barium (mg/L) 0.056 0.083 0.11 Beryllium (mg/L) <0.0010 <0.0010 <0.0010 Boron (mg/L) 1.5 0.54 0.49 0.59 Cadmium (ug/L) 0.042 b 0.0063 0.0087 0.0066 Calcium (mg/L) 180 160 74 28 38 48 Chromium (mg/L) 0.0089 <0.0010 <0.0010 <0.0010 Cobalt (mg/L) <0.00030 <0.00030 <0.00030 Copper (mg/L) 0.003 b 0.00036 0.00022 <0.00020 Iron (mg/L) 0.3 <0.060 <0.060 0.38 0.25 0.83 0.72 Lead (mg/L) 0.0045 b <0.00020 <0.00020 <0.00020 Lithium (mg/L) 0.084 0.066 0.052 Magnesium (mg/L) 53 41 17 8 10 10 Manganese (mg/L) 0.009 0.120 0.160 0.007 0.046 0.055 Mercury (ug/L) 0.026 <0.0020 <0.0020 <0.0020 Molybdenum (mg/L) 0.073 0.0018 0.00069 0.00066 Nickel (mg/L) 0.118 b 0.0035 0.0027 0.00069 Phosphorus (mg/L) <0.10 <0.10 <0.10 Potassium (mg/L) 7.2 5.7 4.0 0.8 0.8 3.5 Selenium (mg/L) 0.001 0.00073 0.00052 <0.00020 Silicon (mg/L) 4.8 5.1 6.8 Silver (mg/L) 0.0001 <0.00010 <0.00010 <0.00010 Sodium (mg/L) 160.0 130.0 100.0 4.9 4.8 5.3 Strontium (mg/L) 0.82 0.64 0.30 Sulphur (mg/L) 190 140 31 Thallium (mg/L) 0.0008 <0.00020 <0.00020 <0.00020 Tin (mg/L) <0.0010 <0.0010 <0.0010 Titanium (mg/L) 0.0013 <0.0010 0.0014 Uranium (mg/L) 0.015 0.0017 0.0011 0.00014 Vanadium (mg/L) <0.0010 <0.0010 <0.0010 Zinc (mg/L) 0.03 <0.0030 <0.0030 <0.0030



CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 19-Jun-13 19-Jun-13 19-Jun-13 Total Metals Aluminum (mg/L) 0.1 a 0.11 0.04 0.05 Antimony (mg/L) <0.00060 <0.00060 <0.00060 Arsenic (mg/L) 0.005 0.0017 0.0015 0.00082 Barium (mg/L) 0.058 0.083 0.110 Beryllium (mg/L) <0.0010 <0.0010 <0.0010 Boron (mg/L) 1.5 0.6 0.5 0.6 Cadmium (ug/L) 0.042 b 0.012 <0.0050 <0.0050 Calcium (mg/L) 180 150 73 Chromium (mg/L) 0.0089 <0.0010 <0.0010 <0.0010 Cobalt (mg/L) 0.00053 0.00071 0.00035 Copper (mg/L) 0.003 b 0.0008 0.0008 0.0004 Iron (mg/L) 0.3 0.15 0.13 0.95 Lead (mg/L) 0.0045 b <0.00020 <0.00020 0.00029 Lithium (mg/L) 0.087 0.068 0.051 Magnesium (mg/L) 55 42 17 Manganese (mg/L) 0.15 0.33 0.21 Mercury (ug/L) 0.026 <0.0020 <0.0020 <0.0020 Molybdenum (mg/L) 0.073 0.0017 0.0016 0.0015 Nickel (mg/L) 0.118 b 0.0049 0.0037 0.0009 Phosphorus (mg/L) <0.10 <0.10 0.10 Potassium (mg/L) 7.4 5.8 3.9 Selenium (mg/L) 0.001 0.00046 0.00038 <0.00020 Silicon (mg/L) 5.0 5.3 6.9 Silver (mg/L) 0.0001 <0.00010 <0.00010 <0.00010 Sodium (mg/L) 170 140 99 Strontium (mg/L) 0.82 0.62 0.29 Sulphur (mg/L) 200 140 32 Thallium (mg/L) 0.0008 <0.00020 <0.00020 <0.00020 Tin (mg/L) 0.0018 0.0019 0.0025 Titanium (mg/L) 0.0033 0.0026 0.0019 Uranium (mg/L) 0.015 0.0023 0.0016 0.0006 Vanadium (mg/L) 0.0018 0.0018 0.0018 Zinc (mg/L) 0.03 0.0058 0.0048 0.0055



CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 19-Jun-13 19-Jun-13 19-Jun-13 Extractable Hydrocarbons F2 (C10-C16 Hydrocarbons) (mg/L) <0.10 <0.10 <0.10 F3 (C16-C34 Hydrocarbons) (mg/L) <0.20 <0.20 <0.20 Volatiles Benzene (ug/L) 370 <0.40 <0.40 <0.40 Toluene (ug/L) 2 <0.40 <0.40 <0.40 Ethylbenzene (ug/L) 90 <0.40 <0.40 <0.40 o-Xylene (ug/L) <0.40 <0.40 <0.40 m&p-Xylenes (ug/L) <0.80 <0.80 <0.80 Xylenes (Total) (ug/L) <0.80 <0.80 <0.80 F1 (C06-C10) - BTEX Purgeable (ug/L) <100 <100 <100 Misc. Organics Naphthenic Acids (mg/L) <1.0 1.0 <1.0


CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Date 19-Jun-13 19-Jun-13 19-Jun-13 Polycyclic Aromatic Hydrocarbons Acenaphthene (ug/L) 5.8 <0.10 <0.10 <0.10 Acenaphthylene (ug/L) <0.10 <0.10 <0.10 Acridine (ug/L) 4.4 <0.20 <0.20 <0.20 Anthracene (ug/L) 0.012 <0.010 <0.010 <0.010 Benzo(a)anthracene (ug/L) 0.018 <0.0085 <0.0085 <0.0085 Benzo(b&j)fluoranthene (ug/L) <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene (ug/L) <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene (ug/L) <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene (ug/L) <0.050 <0.050 <0.050 Benzo(a)pyrene (ug/L) 0.015 <0.0075 <0.0075 <0.0075 Benzo(e)pyrene (ug/L) <0.050 <0.050 <0.050 Chrysene (ug/L) <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene (ug/L) <0.0075 <0.0075 <0.0075 Fluoranthene (ug/L) 0.04 <0.040 <0.040 <0.040 Fluorene (ug/L) 3 <0.050 <0.050 <0.050 Indeno(1,2,3-cd)pyrene (ug/L) <0.0085 <0.0085 <0.0085 2-Methylnaphthalene (ug/L) <0.10 <0.10 <0.10 Naphthalene (ug/L) 1.1 <0.10 <0.10 <0.10 Phenanthrene (ug/L) 0.4 <0.050 <0.050 <0.050 Perylene (ug/L) <0.050 <0.050 <0.050 Pyrene (ug/L) 0.025 <0.020 <0.020 <0.020 Quinoline (ug/L) 3.4 <0.20 <0.20 <0.20

Bioassay Results

Location Approval

26-02 Limit

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream Date 19-Jun-13 19-Jun-13 19-Jun-13 25-Jun-13 Bioassay Ceriodaphnia dubia Chronic Bioassay LC50 (%) >100 Ceriodaphnia dubia Chronic Bioassay LC25 (%) >100 Ceriodaphnia dubia Chronic Bioassay IC50 (%) >100 Ceriodaphnia dubia Chronic Bioassay IC25 (%) >100 Fathead Minnow Chronic Bioassay LC50 (%) >100 Fathead Minnow Chronic Bioassay LC25 (%) >100 Fathead Minnow Chronic Bioassay IC50 (%) >100 Fathead Minnow Chronic Bioassay IC25 (%) >100 96 hr Rainbow Trout acute lethality LC50 (%) >100 >100 >100 96 hr Rainbow Trout acute lethality LC25 (%) >100 >100 >100 96 hr Rainbow Trout Screen (% survival at 100% discharge concentration) 100 100 100 100


Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of June.

Aurora North Mine Comments July 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of:

AESRD ref #273937; EMSC Inlet system and EMSC Outlet system final discharge point daily sample was not collected due to a miscommunication between operations and new contract sampling personnel on July 8th, 2013.

AESRD ref # 273286; EMSC Inlet system final discharge point daily sample was

not collected due to a new contract sampling personnel misunderstanding and collecting only a sample at the CP diversion on July 26th, 2013.

EMSC Inlet water level was too low for discharge on July 3rd, 10th and 17th.

EMSC Outlet water level was too low for discharge on July 10th and 17th.



Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River


1 = Chronic toxicity test using ceriodaphnia and fathead minnows (including microtox IC metric) 2 = 96-hour multiple concentration acute lethality test using rainbow trout



Sample Date pH TSS

(mg/L) Flow



(mg/L) Flow

(m3/day) Approval

26-02 Limit 6.0 to 9.5 50 6.0 to 9.5 50

1-Jul-13 stat stat 4,833 stat stat 7,287 stat stat 0 2-Jul-13 7.9 2 5,342 7.9 6 13,204

Not Discharging 0

3-Jul-13 Not Discharging 3,498 7.9 6 6,868 3,498 4-Jul-13 7.9 10 15,263 7.9 7 9,208 8.0 10 15,263 5-Jul-13 8.0 10 8,617 8.0 8 9,081 8.1 7 5,565 6-Jul-13 1,018 12,515 0 7-Jul-13 0 3,612 0 8-Jul-13 * 5,469 * 13,278

Not Discharging 0

9-Jul-13 8.0 3 763 8.1 7 11,882 0 10-Jul-13 Not Discharging 9,539 Not Discharging 6,510 9,539 11-Jul-13 7.9 14 5,088 8.0 4 10,822 8.1 9 5,088 12-Jul-13 7.7 27 4,102 7.8 10 8,531 Not Discharging 0 13-Jul-13 4,293 10,329 3,816 14-Jul-13 8,585 9,413 8,585 15-Jul-13 7.8 3 5,580 7.9 6 7,016 Not Discharging 1,908 16-Jul-13 7.8 7 15,263 7.9 5 9,541 7.9 7 15,263 17-Jul-13 Not Discharging 4,134 Not Discharging 10,802

Not Discharging 1,272

18-Jul-13 7.8 <1 1,717 8.0 2 9,007 0 19-Jul-13 7.7 2 4,006 7.8 <1 10,815 0 20-Jul-13 2,862 7,713 0 21-Jul-13 0 7,381 0 22-Jul-13 7.9 10 7,822 7.9 2 7,741 7.9 7 3,816 23-Jul-13 8.0 3 5,437 8.2 <1 8,488 8.0 7 3,816 24-Jul-13 7.9 3 5,755 8.0 2 13,853 7.9 8 4,134 25-Jul-13 7.9 3 2,862 7.9 6 7,123 Not Discharging 0 26-Jul-13 ** 17,361 7.9 4 11,540 7.9 4 14,309 27-Jul-13 5,533 5,443 954 28-Jul-13 7,123 10,767 2,544 29-Jul-13 8.0 3 17,616 8.0 4 10,949 7.9 4 13,037 30-Jul-13 7.9 2 4,579 7.9 4 11,251

Not Discharging 0

31-Jul-13 7.9 3 4,579 7.9 3 14,551 0 Total 188,639 296,521 112,407 Total Flow 485,158

*AESRD ref #273937 **AESRD ref #273286


Sample Location Units


CCME Guideline

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date

2-Jul-13 2-Jul-13 4-Jul-13 16-Jul-13 16-Jul-13 16-Jul-13 23-Jul-13 23-Jul-13 23-Jul-13 30-Jul-13 30-Jul-13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 518 425 431 476 450 396 439 471 422 635 414 Alkalinity (PP as CaCO3) mg/L < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 Dissolved Inorganic Carbon mg/L 136 111 111 122 116 104 119 129 113 162 102 Dissolved Organic Carbon mg/L 10 11 17 7 10 10 16 12 9 11 11 Sulphide mg/L < 0.0020 0.0051 < 0.0020 < 0.0020 < 0.0020 < 0.0020 < 0.0020 < 0.0020 < 0.0020 <0.0020 <0.0020 Major Ions Hydroxide (OH) mg/L < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 Bicarbonate mg/L 632 518 526 581 550 483 535 575 514 775 506 Calcium mg/L 106 51 185 151 141 51 192 164 64 73 59 Carbonate mg/L < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5 Chloride mg/L 120 48 38 100 120 120 28 120 95 34 53 34 Magnesium mg/L 21.2 14.7 45.1 42.3 42.2 13.9 55.1 50.3 17.5 13.000 14.100 Potassium mg/L 4.1 5.1 7.1 6.4 6.5 3.6 9.3 7.5 6.1 5.0 4.8 Sodium mg/L 164 148 187 205 230 106 272 240 155 234 132 Sulphate mg/L 160 65 390 460 500 32 600 430 73 100 84 Dissolved Metals Iron mg/L 0.3 0.050 < 0.010 0.160 < 0.010 < 0.010 < 0.010 0.030 0.030 0.030 <0.01 0.030 Manganese mg/L 0.159 < 0.001 < 0.001 0.034 0.001 0.102 0.007 0.114 0.159 0.186 0.111 Oxygen Demand Biochemical Oxygen Demand mg/L 7 < 2 3 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 Nutrients

Ammonia Total as N mg/L 2.5 daily 1.0 monthly

0.1 0.2 < 0.1 < 0.1 < 0.1 0.4 < 0.1 0.2 0.4 0.6 0.4

Nitrate as N mg/L 13 0.0070 0.0210 0.0980 0.0530 0.0250 < 0.0030 0.0510 0.0330 0.0120 0.0200 0.0130 Nitrite as N mg/L 0.06 < 0.0030 < 0.0030 0.0070 0.0061 < 0.0030 < 0.0030 0.0054 0.0058 < 0.0030 <0.0099 <0.0099 Phosphate Total as P mg/L < 0.10 0.11 < 0.10 < 0.10 < 0.10 0.12 < 0.10 < 0.10 0.11 0.13 0.11 Field Parameters Temperature °C 17.7 18.6 21.5 16.9 16.8 11.2 19.0 17.1 13.0 11.2 11.4

Dissolved Oxygen mg/L >5.0 daily* >6.5 weekly*

7.0 6.6 7.0 8.1 6.3 7.4 6.6 6.8 8.6 7.9 10.7

*Dissolved Oxygen (D.O.) these are minimum levels for October 1st to March 31st.




CCME Guideline CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet


Stanley Creek Upstream

11-Jul-13 9-Jul-13 9-Jul-13 9-Jul-13 9-Jul-13 Conventional Parameters

Alkalinity (Total as CaCO3) mg/L 460 390 410 150 190 Alkalinity (PP as CaCO3) mg/L < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 Dissolved Inorganic Carbon mg/L 100 91 96 35 46 Dissolved Organic Carbon mg/L 16 10 9 32 22 Sulphide mg/L < 0.0020 < 0.0020 < 0.0020 - - Total Suspended Solids mg/L 50 9 3 7 20 20 pH - 6.0-9.5 8.1 8.0 8.1 8.0 8.1

Major Ions Hydroxide (OH) mg/L <0.50 <0.50 <0.50 <0.50 <0.50 Bicarbonate mg/L 560 480 500 190 230 Calcium mg/L 210 150 61 48 59 Carbonate mg/L < 0.50 < 0.50 < 0.50 < 0.50 < 0.50 Chloride mg/L 120 110 20 37 3 1 Magnesium mg/L 59 30 15 12 12 Potassium mg/L 8.6 3.7 6.0 0.8 2.7 Sodium mg/L 210 81 140 8.5 4 Sulphate mg/L 650 240 81 62 4

Oxygen Demand Biochemical Oxygen Demand mg/L 7 < 2 < 2 4 - -

Nutrients


< 0.050 0.150 0.200 0.077 < 0.050

Nitrate as N mg/L 13 0.0610 < 0.0030 < 0.0030 0.0350 0.0074 Nitrite as N mg/L

0.06 0.0049 < 0.0030 < 0.0030 0.0030 < 0.0030 Phosphate Total as P mg/L 0.013 0.068 0.085 0.072 0.160

Field Parameters Temperature °C 20.1 16.1 12.7 19.3 15.4

Dissolved Oxygen (DO) mg/L >5.0 daily* >6.5 weekly*

8.1 5.5 7.8 5.4 7.9


Sample Location

CCME

Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date Units 11-Jul-13 9-Jul-13 9-Jul-13 Total Metals

Aluminum mg/L 0.1 a 0.019 0.067 0.120 Antimony mg/L < 0.00060 < 0.00060 < 0.00060 Arsenic mg/L 0.005 0.00067 0.00069 0.0004 Barium mg/L 0.063 0.120 0.091 Beryllium mg/L < 0.0010 < 0.0010 < 0.0010 Boron mg/L 1.5 0.74 0.33 1.00 Cadmium ug/L 0.042 b < 0.0050 0.0170 0.0110 Chromium mg/L 0.0089 < 0.0010 0.0022 < 0.0010 Cobalt mg/L < 0.00030 0.00082 < 0.00030 Copper mg/L 0.003 b 0.00033 0.00042 0.00051 Iron mg/L 0.3 < 0.060 0.540 0.830 Lead mg/L 0.0045 b < 0.00020 < 0.00020 < 0.00020 Lithium mg/L 0.097 0.038 0.071 Manganese mg/L 0.15 0.52 0.18 Mercury ug/L 0.026 < 0.0020 < 0.0020 < 0.0020 Molybdenum mg/L 0.073 0.00075 < 0.00020 0.00021 Nickel mg/L 0.118 b 0.0032 0.0029 0.00092 Selenium mg/L 0.001 0.00038 < 0.00020 < 0.00020 Silicon mg/L 6.2 7.8 5.4 Silver mg/L 0.0001 < 0.00010 < 0.00010 < 0.00010 Strontium mg/L 0.92 0.38 0.44 Sulphur mg/L 220 80 25 Thallium mg/L 0.0008 < 0.00020 < 0.00020 < 0.00020 Tin mg/L < 0.0010 < 0.0010 < 0.0010 Titanium mg/L < 0.0010 0.0027 0.0048 Uranium mg/L 0.015 0.0016 0.00034 0.00014 Vanadium mg/L < 0.0010 0.0011 0.0015 Zinc mg/L 0.03 0.0039 0.0048 0.0044

a - Aluminum based on pH >6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)

Sample Location

CCME Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream


Sample Date Units 11-Jul-13 9-Jul-13 9-Jul-13 9-Jul-13 9-Jul-13 Dissolved Metals

Aluminum mg/L 0.1 a < 0.0030 0.049 0.034 - - Antimony mg/L < 0.00060 < 0.00060 < 0.00060 - - Arsenic mg/L 0.005 0.0006 0.00058 0.00028 - - Barium mg/L 0.065 0.120 0.089 - - Beryllium mg/L < 0.0010 < 0.0010 < 0.0010 - - Boron mg/L 1.5 0.73 0.33 1.00 - - Cadmium ug/L 0.042 b < 0.0050 0.0074 0.0057 - - Chromium mg/L 0.0089 < 0.0010 < 0.0010 < 0.0010 - - Cobalt mg/L < 0.00030 0.00066 < 0.00030 - - Copper mg/L 0.003 b < 0.00020 < 0.00020 < 0.00020 - - Iron mg/L 0.3 0.097 0.340 0.310 1.400 0.510 Lead mg/L 0.0045 b < 0.00020 < 0.00020 < 0.00020 - - Lithium mg/L 0.094 0.038 0.071 - - Manganese mg/L 0.019 0.490 0.170 0.038 0.140 Mercury ug/L 0.026 < 0.0020 < 0.0020 0.0024 - - Molybdenum mg/L 0.073 0.00065 0.0003 0.00021 - - Nickel mg/L 0.118 b 0.0029 0.0022 0.00073 - - Selenium mg/L 0.001 0.00035 < 0.00020 < 0.00020 - - Silicon mg/L 6.3 7.5 4.9 - - Silver mg/L 0.0001 < 0.00010 < 0.00010 < 0.00010 - - Strontium mg/L 0.98 0.39 0.45 - - Sulphur mg/L 210 75 23 - - Thallium mg/L 0.0008 < 0.00020 < 0.00020 < 0.00020 - - Tin mg/L < 0.0010 < 0.0010 < 0.0010 - - Titanium mg/L < 0.0010 0.0021 0.0013 - - Uranium mg/L 0.015 0.0016 0.00039 0.00013 - - Vanadium mg/L < 0.0010 < 0.0010 < 0.0010 - - Zinc mg/L 0.03 < 0.0030 < 0.0030 < 0.0030 - - a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)

Sample Location

CCME Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date Units 11-Jul-13 9-Jul-13 9-Jul-13 General Organics

F2 (C10-C16 Hydrocarbons) mg/L < 0.10 < 0.10 < 0.10 F3 (C16-C34 Hydrocarbons) mg/L < 0.20 < 0.20 < 0.20 Naphthenic Acids mg/L 1.0 < 1.0 3.5

Volatile Organic Compounds F1 (C06-C10) - BTEX Purgeable ug/L < 100 < 100 < 100 Benzene ug/L 370 < 0.40 < 0.40 < 0.40 Toluene ug/L 2 < 0.40 < 0.40 < 0.40 Ethylbenzene ug/L 90 < 0.40 < 0.40 < 0.40 o-Xylene ug/L < 0.40 < 0.40 < 0.40 m&p-Xylenes ug/L < 0.80 < 0.80 < 0.80 Xylenes (Total) ug/L < 0.80 < 0.80 < 0.80

Polycyclic Aromatic Hydrocarbons Acenaphthene ug/L 5.8 < 0.10 < 0.10 < 0.10 Acenaphthylene ug/L < 0.10 < 0.10 < 0.10 Acridine ug/L 4.4 < 0.20 < 0.20 < 0.20 Anthracene ug/L 0.012 < 0.010 < 0.010 < 0.010 Benzo(a)anthracene ug/L 0.018 < 0.0085 < 0.0085 < 0.0085 Benzo(b&j)fluoranthene ug/L < 0.0085 < 0.0085 < 0.0085 Benzo(k)fluoranthene ug/L < 0.0085 < 0.0085 < 0.0085 Benzo(g,h,I)perylene ug/L < 0.0085 < 0.0085 < 0.0085 Benzo(c)phenanthrene ug/L < 0.050 < 0.050 < 0.050 Benzo(a)pyrene ug/L 0.015 < 0.0075 < 0.0075 < 0.0075 Benzo(e)pyrene ug/L < 0.050 < 0.050 < 0.050 Chrysene ug/L < 0.0085 < 0.0085 < 0.0085 Dibenz(a,h)anthracene ug/L < 0.0075 < 0.0075 < 0.0075 Fluoranthene ug/L 0.04 < 0.040 < 0.040 < 0.040 Fluorene ug/L 3 < 0.050 < 0.050 < 0.050 Indeno(1,2,3-cd)pyrene ug/L < 0.0085 < 0.0085 < 0.0085 2-Methylnaphthalene ug/L < 0.10 < 0.10 < 0.10 Naphthalene ug/L 1.1 < 0.10 < 0.10 < 0.10 Phenanthrene ug/L 0.4 < 0.050 < 0.050 < 0.050 Perylene ug/L < 0.050 < 0.050 < 0.050 Pyrene ug/L 0.025 < 0.020 < 0.020 < 0.020 Quinoline ug/L 3.4 < 0.20 < 0.20 < 0.20

Bioassay Results


26-02 Limit

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet


Sample Date Units 11-Jul-13 9-Jul-13 9-Jul-13 9-Jul-13 Toxicity

Ceriodaphnia dubia Chronic Bioassay LC50 % >100 >100 >100 >100 Ceriodaphnia dubia Chronic Bioassay LC25 % >100 12 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC50 % >100 47 >100 >100 Ceriodaphnia dubia Chronic Bioassay IC25 % >100 11 >100 63 Fathead Minnow Chronic Bioassay LC50 % >100 >100 >100 >100 Fathead Minnow Chronic Bioassay LC25 % >100 >100 >100 >100 Fathead Minnow Chronic Bioassay IC50 % >100 >100 >100 >100 Fathead Minnow Chronic Bioassay IC25 % >100 >100 >100 >100 96 hr Rainbow Trout acute lethality LC50 % >100 >100 >100 - 96 hr Rainbow Trout acute lethality LC25 % >100 >100 >100 - 96 hr Rainbow Trout Screen (% survival at

100% discharge concentration) % 100 100 100 100 -

Microtox IC50 (15 min, 15C) % >100 >91 >91 >91 Microtox IC20 (15 min, 15C) % 86 >91 >91 >91

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of July.

Aurora North Mine Comments August 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C with the exception of:

EMSC Outlet water level was too low for discharge on August 13th. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River


1 = chronic toxicity test using ceriodaphnia and fathead minnows (including Microtox IC metric) 2 = 96-hour multiple concentration acute lethality test using rainbow trout



Parameter pH TSS (mg/L)


(mg/L) Flow


Flow (m3/day)


1-Aug-13 7.9 2 9765 7.8 2 8854 7.9 < 1 5088 2-Aug-13 7.9 <1 4647 7.7 4 1588 Not Discharging 0 3-Aug-13 1022 12210 0 4-Aug-13 4273 9158 0 5-Aug-13 * * 7509 * * 6437 * * 2862 6-Aug-13 7.9 3 19918 7.9 3 8043 7.8 3 15263 7-Aug-13 7.9 9 11333 7.9 2 8355 7.9 3 6677 8-Aug-13 7.7 1 4655 7.7 4 10105

Not Discharging 0

9-Aug-13 7.9 2 4648 7.9 3 6868 0 10-Aug-13 4655 2417 0 11-Aug-13 1268 8395 0 12-Aug-13 7.9 7 18003 7.8 5 11447 7.8 4 13355 13-Aug-13 8.2 3 6245 Not Discharging 3689 8.0 5 1590 14-Aug-13 7.8 3 6556 7.9 3 11066 Not Discharging 1908 15-Aug-13 7.7 3 13042 7.8 21 6614 7.8 3 11447 16-Aug-13 7.8 7 16706 7.9 13 12210 7.8 3 12719 17-Aug-13 3789 10684 0 18-Aug-13 4648 7631 0 19-Aug-13 7.9 3 11960 7.9 7 12210 7.8 2 7313 20-Aug-13 8.0 2 4648 8.0 1 5088

Not Discharging 0

21-Aug-13 7.9 4 4648 7.9 5 8649 0 22-Aug-13 7.9 3 16095 7.9 5 8903 7.9 2 11447 23-Aug-13 7.9 6 4640 7.9 4 8395 Not Discharging 0 24-Aug-13 4648 6868 0 25-Aug-13 6071 12210 1431 26-Aug-13 7.9 8 19912 7.8 3 6868 7.8 14 15263 27-Aug-13 8.0 4 6866 8.0 5 8140 7.9 4 2226 28-Aug-13 7.9 3 3599 7.9 7 10938

Not Discharging 0

29-Aug-13 7.9 6 4641 8.0 6 10684 0 30-Aug-13 8.0 10 16723 7.9 7 4070 7.9 6 12083 31-Aug-13 4579 11701 0

Total 251709 260496 120671 Total Flow 512205

*Statutory Holiday




CCME Guideline CP

Diversion CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet Sample Date

1-Aug-13 6-Aug-13 6-Aug-13 6-Aug-13 20-Aug-13 20-Aug-13 22-Aug-13 27-Aug-13 27-Aug-13 27-Aug-13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 452 430 542 432 481 434 480 530 556 440 Alkalinity (PP as CaCO3) mg/L <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 Dissolved Inorganic Carbon mg/L 120 106 139 116 119 107 130 144 149 110 Dissolved Organic Carbon mg/L 16 16 14 12 10 11 14 15 14 12 Sulphide mg/L <0.002 <0.002 <0.002 <0.002 0.0033 <0.002 <0.002 <0.002 <0.002 <0.002 Major Ions Bicarbonate mg/L 551 525 661 527 587 529 586 646 679 537 Calcium mg/L 160 181 108 55.6 67 54 156 149 118 60 Carbonate mg/L <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 Chloride mg/L 120 110 110 79 36 33 40 140 190 150 46 Hydroxide mg/L <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 Magnesium mg/L 57.6 53.5 36.2 15.4 16.9 16.2 47.5 50.7 45.0 15.6 Potassium mg/L 7.2 6.7 5.6 4.8 3.7 5.0 7.2 8.6 7.6 5.5 Sodium mg/L 223 217 222 136 145 142 252 335 315 152 Sulphate mg/L 630 570 310 76 90 84 450 580 450 95 Dissolved Metals Iron mg/L 0.3 0.020 0.010 <0.01 0.020 <0.06 <0.06 <0.01 <0.06 <0.06 <0.06 Manganese mg/L 0.004 0.002 0.073 0.113 0.209 0.136 0.002 0.024 0.046 0.136 Oxygen Demand Biochemical Oxygen Demand mg/L 7 <2 <2 <2 <2 <2 <2 <2 <2 <2 3 Nutrients


<0.1 <0.1 0.2 0.2 0.4 0.3 <0.1 0.2 0.3 0.4

Nitrate as N mg/L 13 0.020 0.073 0.031 0.008 0.025 0.008 0.096 0.150 0.110 0.009 Nitrite as N mg/L 0.06 <0.003 0.0051 <0.003 <0.003 0.0038 0.0044 0.0077 0.0160 0.0120 0.0035 Phosphate Total as P mg/L <0.1 <0.1 <0.1 <0.1 0.15 <0.1 <0.1 <0.1 <0.1 <0.1 Field Parameters Temperature °C 17.8 18.8 16.5 13.8 11.3 12.8 19.7 17.3 15.5 11.7


8.2 7.0 6.7 7.8 6.9 6.8 8.0 7.5 7.6 8.0



Parameter Units


CCME Guideline CP Diversion EMSC Diversion

Inlet EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream


13-Aug-13 13-Aug-13 14-Aug-13 13-Aug-13 13-Aug-13 13-Aug-13

Conventional Parameters Alkalinity (Total as CaCO3) mg/L 440 560 420 150 200 170 Alkalinity (PP as CaCO3) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Dissolved Inorganic Carbon mg/L 110 130 99 38 48 44 Dissolved Organic Carbon mg/L 15 9 11 24 20 15 Sulphide mg/L <0.002 <0.002 <0.002 - - - Total Suspended Solids mg/L 50 5 3 3 2 14 1 pH - 6.0-9.5 8.0 8.2 7.9 8.1 8.1 8.2 Major Ions Bicarbonate mg/L 540 680 510 180 250 210 Calcium mg/L 200 74 64 47 65 60 Carbonate mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Chloride mg/L

120 140 46 40 2.5 3.3 1.2 Hydroxide (OH) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Magnesium mg/L 61 16 16 13 17 13 Potassium mg/L 10 7 7 1 1 2 Sodium mg/L 250 250 150 11 8 4 Sulphate mg/L 640 110 89 1 2 4 Oxygen Demand Biochemical Oxygen Demand mg/L 7 2.0 <2 <2 - - - Nutrients


0.091 0.500 0.370 <0.05 0.120 <0.05

Nitrate as N mg/L 13 0.066 0.006 0.008 0.034 0.052 0.011

Nitrite as N mg/L 0.06 0.0047 <0.003 <0.003 0.0057 0.0065 <0.003

Phosphate Total as P mg/L 0.017 0.160 0.066 0.034 0.150 0.064 Field Parameters Temperature °C 20.1 13.1 13.8 19.5 16.8 16.4


9.4 8.2 7.7 7.8 4.5 9


Sample Location CCME Guideline CP Diversion EMSC Diversion Inlet EMSC Diversion Outlet

Sample Date Units 13-Aug-13 13-Aug-13 14-Aug-13 Total Metals Aluminum mg/L 0.1 a 0.012 0.024 0.011 Antimony mg/L <0.0006 <0.0006 <0.0006 Arsenic mg/L 0.005 0.00026 0.00046 0.00024 Barium mg/L 0.12 0.10 0.11 Beryllium mg/L <0.001 <0.001 <0.001 Boron mg/L 1.5 1.30 1.20 1.10 Cadmium µg/L 0.042 b 0.0130 0.0094 <0.0050 Chromium mg/L 0.0089 <0.001 0.0012 <0.0010 Cobalt mg/L <0.0003 <0.0003 <0.0003 Copper mg/L 0.003 b 0.00043 0.00170 0.00350 Iron mg/L 0.3 0.34 0.25 0.63 Lead mg/L 0.0045 b <0.0002 0.00097 0.00026 Lithium mg/L 0.098 0.093 0.078 Manganese mg/L 0.27 0.16 0.18 Mercury µg/L 0.026 0.0028 <0.002 <0.002 Molybdenum mg/L 0.073 <0.0002 <0.0002 0.00021 Nickel mg/L 0.118 b 0.0012 0.0014 0.0006 Selenium mg/L 0.001 <0.0002 <0.0002 <0.0002 Silicon mg/L 4.6 4.9 5.4 Silver mg/L 0.0001 <0.0001 <0.0001 <0.0001 Strontium mg/L 0.44 0.41 0.51 Sulphur mg/L 33 32 28 Thallium mg/L 0.0008 <0.0002 <0.0002 <0.0002 Tin mg/L <0.001 <0.001 <0.001 Titanium mg/L <0.001 0.0041 <0.001 Uranium mg/L 0.015 0.00012 0.00013 0.00011 Vanadium mg/L <0.001 <0.001 0.0014 Zinc mg/L 0.03 <0.003 0.0062 0.0069



Sample Location CCME Guideline

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream Sample Date Units 13-Aug-13 13-Aug-13 14-Aug-13 13-Aug-13 13-Aug-13 13-Aug-13 Dissolved Metals Aluminum mg/L 0.1 a 0.0150 0.0210 <0.003 - - - Antimony mg/L <0.0006 <0.0006 <0.0006 - - - Arsenic mg/L 0.005 0.00066 0.00053 <0.0002 - - - Barium mg/L 0.049 0.120 0.120 - - - Beryllium mg/L <0.001 <0.001 <0.001 - - - Boron mg/L 1.5 0.95 1.30 1.20 - - - Cadmium µg/L 0.042 b 0.0053 0.0071 0.0140 - - - Chromium mg/L 0.0089 <0.0010 0.0011 <0.0010 - - - Cobalt mg/L <0.00030 <0.00030 <0.00030 - - - Copper mg/L 0.003 b 0.00058 0.00370 <0.00020 - - - Iron mg/L 0.3 <0.060 0.43 <0.060 1.10 2.30 0.24 Lead mg/L 0.0045 b 0.0002 0.0009 <0.00020 - - - Lithium mg/L 0.12 0.098 0.084 - - - Manganese mg/L 0.12 0.32 0.18 0.04 0.22 0.07 Mercury µg/L 0.026 <0.0020 0.0037 0.0025 - - - Molybdenum mg/L 0.073 0.0005 0.00026 <0.00020 - - - Nickel mg/L 0.118 b 0.0027 0.0014 0.00091 - - - Selenium mg/L 0.001 <0.00020 <0.00020 <0.00020 - - - Silicon mg/L 6.60 4.70 6.20 - - - Silver mg/L 0.0001 <0.00010 <0.00010 <0.00010 - - - Strontium mg/L 1.00 0.45 0.55 - - - Sulphur mg/L 210 33 31 - - - Thallium mg/L 0.0008 <0.00020 <0.00020 <0.00020 - - - Tin mg/L <0.0010 <0.0010 <0.0010 - - - Titanium mg/L <0.0010 0.0033 <0.0010 - - - Uranium mg/L 0.015 0.0012 0.00014 <0.00010 - - - Vanadium mg/L <0.0010 <0.0010 <0.0010 - - - Zinc mg/L 0.03 0.012 0.0056 <0.0030 - - -

Sample Location CCME Guideline CP Diversion EMSC Diversion Inlet EMSC Diversion Outlet

Sample Date Units 13-Aug-13 13-Aug-13 14-Aug-13 General Organics F2 (C10-C16 Hydrocarbons) mg/L <0.10 <0.10 0.29 F3 (C16-C34 Hydrocarbons) mg/L 0.21 <0.20 0.89 Naphthenic Acids mg/L 1.2 6.0 1.6 Volatile Organic Compounds F1 (C06-C10) - BTEX Purgeable µg/L <100 <100 <100 Benzene µg/L 370 <0.40 <0.40 <0.40 Toluene µg/L 2 <0.40 <0.40 <0.40 Ethylbenzene µg/L 90 <0.40 <0.40 <0.40 o-Xylene µg/L <0.40 <0.40 <0.40 m&p-Xylenes µg/L <0.80 <0.80 <0.80 Xylenes (Total) µg/L <0.80 <0.80 <0.80 Polycyclic Aromatic Hydrocarbons Acenaphthene µg/L 5.8 <0.10 <0.10 <0.10 Acenaphthylene µg/L <0.10 <0.10 <0.10 Acridine µg/L 4.4 <0.20 <0.20 <0.20 Anthracene µg/L 0.012 <0.010 <0.010 <0.010 Benzo(a)anthracene µg/L 0.018 <0.0085 <0.0085 <0.0085 Benzo(b&j)fluoranthene µg/L <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene µg/L <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene µg/L <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene µg/L <0.050 <0.050 <0.050 Benzo(a)pyrene µg/L 0.015 <0.0075 <0.0075 <0.0075 Benzo(e)pyrene µg/L <0.050 <0.050 <0.050 Chrysene µg/L <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene µg/L <0.0075 <0.0075 <0.0075 Fluoranthene µg/L 0.04 <0.040 <0.040 <0.040 Fluorene µg/L 3 <0.050 <0.050 <0.050 Indeno(1,2,3-cd)pyrene µg/L <0.0085 <0.0085 <0.0085 2-Methylnaphthalene µg/L <0.10 <0.10 <0.10 Naphthalene µg/L 1.1 <0.10 <0.10 <0.10 Phenanthrene µg/L 0.4 <0.050 <0.050 <0.050 Perylene µg/L <0.050 <0.050 <0.050 Pyrene µg/L 0.025 <0.020 <0.020 <0.020 Quinoline µg/L 3.4 <0.20 <0.20 <0.20

Bioassay Result


CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream Sample Date Units 13-Aug-13 13-Aug-13 14-Aug-13 13-Aug-13 Toxicity Ceriodaphnia dubia Chronic Bioassay LC50 % - - - >100 Ceriodaphnia dubia Chronic Bioassay LC25 % - - - >100 Ceriodaphnia dubia Chronic Bioassay IC50 % - - - >100 Ceriodaphnia dubia Chronic Bioassay IC25 % - - - >100 Fathead Minnow Chronic Bioassay LC50 % - - - >100 Fathead Minnow Chronic Bioassay LC25 % - - - >100 Fathead Minnow Chronic Bioassay IC50 % - - - >100 Fathead Minnow Chronic Bioassay IC25 % - - - >100 96 hr Rainbow Trout acute lethality LC50 % >100 >100 >100 - 96 hr Rainbow Trout acute lethality LC25 % >100 >100 >100 - 96 hr Rainbow Trout Screen (% survival at 100% discharge concentration) % 100 100 100 100 -

Microtox IC50 (15 min, 15C) % - - - >91 Microtox IC20 (15 min, 15C) % - - - >91

Mildred Lake Mine Comments

Mildred Lake Mine was not discharging water during the month of August.

Aurora North Mine Comments September 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River


1 = chronic toxicity test using ceriodaphnia and fathead minnows (including Microtox IC metric) 2 = 96-hour multiple concentration acute lethality test using rainbow trout





(mg/L) Flow


Flow (m3/day)


1-Sep-13 4641 5088 0

2-Sep-13 * * 11318 * * 9158 * * 6677

3-Sep-13 8.0 10 10522 8.0 5 10684 8.0 4 5883

4-Sep-13 7.9 4 6869 7.9 5 6359 Not Discharging 2226

5-Sep-13 7.9 3 9364 8.0 5 4197 7.8 3 6677

6-Sep-13 8.0 7 9083 7.9 7 8903 8.0 3 4452

7-Sep-13 8457 6359 3816

8-Sep-13 6549 8903 1908

9-Sep-13 7.9 5 9408 7.9 5 5088 7.8 6 4770

10-Sep-13 8.1 <1 19268 8.2 3 8140 8.1 1 14627

11-Sep-13 7.9 3 7819 7.9 5 5088 7.8 4 3180

12-Sep-13 7.8 2 4644 7.9 5 7886 Not Discharging

0

13-Sep-13 7.9 2 4640 7.9 1 4324 0

14-Sep-13 4635 6614 0

15-Sep-13 7180 8649 2544

16-Sep-13 7.8 3 12905 7.9 4 7123 7.8 18 8267

17-Sep-13 7.8 9 13861 7.9 4 5596 7.9 2 9221


19-Sep-13 7.8 7 13067 7.9 4 5978 7.8 4 8426


21-Sep-13 14175 11193 9539

22-Sep-13 4628 7377 0


24-Sep-13 8.0 1 18616 7.9 4 7886 7.9 3 13991

25-Sep-13 8.0 <1 9394 8.0 5 10938 7.9 1 4770


27-Sep-13 8.0 <1 6995 8.0 5 5533 Not Discharging 0

28-Sep-13 11048 5533 2226

29-Sep-13 8997 5533 2544

30-Sep-13 7.9 4 19150 7.9 4 8275 7.8 6 10328

Total 279749 210968 127978

Total Flow 490717

*Statutory Holiday


Sample Location Units CP

Diversion CP

Diversion CP

Diversion CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet


CCME

Guideline Sample Date 3-Sep-13 10-Sep-13 17-Sep-13 24-Sep-13 3-Sep-13 3-Sep-13 10-Sep-13 10-Sep-13 17-Sep-13 17-Sep-13 24-Sep-13 24-Sep-13 Conventional Parameters Alkalinity (PP as CaCO3) mg/L <5 <0.50 <5 <5 <5 <5 <0.50 <0.50 <5 <5 <5 <5 Alkalinity (Total as CaCO3) mg/L 586 570 629 622 552 446 540 420 599 451 632 454 Dissolved Inorganic Carbon mg/L 126 150 154 167 118 103 140 100 145 102 156 102 Dissolved Organic Carbon mg/L 14 12 15 15 14 11 13 10 15 11 13 12 Sulphide mg/L <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 0.0066 <0.0020 <0.0020 <0.0020 Major Ions Bicarbonate mg/L 715 690 768 759 674 544 660 520 730 551 771 554 Carbonate mg/L <5 <0.50 <5 <5 <5 <5 <0.50 <0.50 <5 <5 <5 <5 Hydroxide (OH) mg/L <5 <0.50 <5 <5 <5 <5 <0.50 <0.50 <5 <5 <5 <5 Calcium mg/L 117 150 116 105 99.9 61.8 130 74 104 62 85.6 58.1 Chloride mg/L 180 190 200 200 170 44 190 41 200 50 140 48 120 Magnesium mg/L 42.8 56.0 45.4 45.3 42.6 14.2 54.0 19.0 45.8 15.8 34.3 15.9 Potassium mg/L 7.1 11.0 8.0 8.3 7.1 4.9 11.0 6.6 8.1 5.3 7.0 5.3 Sodium mg/L 329 360 354 393 310 158 350 150 343 154 322 161 Sulphate mg/L 410 500 410 400 400 97 480 97 400 93 270 90 Dissolved Metals Iron mg/L 0.110 <0.060 0.020 <0.010 0.100 0.060 <0.060 0.078 0.020 0.020 <0.010 <0.010 0.3 Manganese mg/L 0.034 0.042 0.029 0.006 0.011 0.100 0.012 0.140 0.006 0.092 0.182 <0.001 Oxygen Demand Biochemical Oxygen Demand mg/L <2 <2 <2 2 <2 <2 <2 <2 2 3 <2 <2 7 Nutrients

Ammonia Total as N mg/L <0.1 0.1 <0.1 0.2 <0.1 0.4 0.4 0.3 0.1 0.3 0.3 0.3 2.5 daily 1.0 monthly

Nitrate as N mg/L 0.180 0.180 0.180 0.230 0.180 0.170 0.059 0.011 0.220 0.006 0.140 0.011 3 Nitrite as N mg/L <0.060 0.016 0.017 0.025 <0.060 <0.030 0.005 <0.0030 0.018 <0.0030 0.016 0.004 0.06 Phosphate Total as P mg/L <0.10 0.02 <0.10 0.03 <0.10 <0.10 0.13 0.07 0.13 <0.10 0.08 0.07 Field Parameters

Dissolved Oxygen mg/L 8.0 8.5 7.3 10.3 8.2 8.3 9.6 9.7 7.4 5.5 7.1 5.7 >5.0 daily* >6.5 weekly*

Temperature °C 16.5 15.9 15.5 12.9 15.7 12.1 16.0 12.4 15.3 12.3 11.3 10.5 *Dissolved Oxygen (D.O.) these are minimum levels for October 1st to March 31st.


Parameter Units CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream



CCME Guideline

10-Sep-13 10-Sep-13 10-Sep-13 10-Sep-13 10-Sep-13

Conventional Parameters

Alkalinity (PP as CaCO3) mg/L <0.50 <0.50 <0.50 <0.50 <0.50

Alkalinity (Total as CaCO3) mg/L 570 540 420 180 170 Dissolved Inorganic Carbon mg/L 150 140 100 43 42 Dissolved Organic Carbon mg/L 12 13 10 26 9.2

Sulphide mg/L <0.0020

<0.0020

<0.0020 - -

Total Suspended Solids mg/L 1 <1.0 3 6 <1.0 50 pH - 8.1 8.1 8.2 8.1 8.1 6.0-9.5 Major Ions

Bicarbonate mg/L 690 660 520 220 210 Carbonate mg/L <0.50 <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) mg/L <0.50 <0.50 <0.50 <0.50 <0.50 Calcium mg/L 150 130 74 53 56

Chloride mg/L 190 190 41 4 <1.0

120 Magnesium mg/L 56 54 19 15 12 Potassium mg/L 11.0 11.0 6.6 0.9 1.6 Sodium mg/L 360 350 150 11 4 Sulphate mg/L 500 480 97 <1 7 Oxygen Demand

Biochemical Oxygen Demand mg/L <2 <2 <2 - - 7 Nutrients

Ammonia Total as N mg/L 0.096 0.360 0.270 0.058 0.052 2.5 daily 1.0 monthly

Nitrate as N mg/L 0.180 0.059 0.011 0.061 0.020 3

Nitrite as N mg/L 0.016

0.0052

<0.0030

<0.0030

<0.0030

0.06

Phosphate Total as P mg/L 0.021 0.130 0.069 0.040 0.049 Field Parameters

Dissolved Oxygen (D.O.) mg/L 8.5 9.6 9.7 7.3 9.0 >5.0 daily* >6.5 weekly*

Temperature °C 15.9 16.0 12.4 15.8 11.8 *Dissolved Oxygen (D.O.) these are minimum levels for October 1st to March 31st.





CCME Guideline

10-Sep-13 10-Sep-13 10-Sep-13 Total Metals Aluminum mg/L 0.015 0.021 0.022 0.1 a Antimony mg/L <0.00060 <0.00060 <0.00060 Arsenic mg/L 0.0006 0.0005 0.0003 0.005 Barium mg/L 0.055 0.092 0.110 Beryllium mg/L <0.0010 <0.0010 <0.0010 Boron mg/L 1.1 1.2 1.0 1.5 Cadmium µg/L 0.0073 0.0110 0.0052 0.042 b Chromium mg/L <0.0010 <0.0010 <0.0010 0.0089 Cobalt mg/L <0.00030 0.00031 <0.00030 Copper mg/L 0.0008 0.0006 0.0006 0.003 b Iron mg/L <0.060 0.320 0.880 0.3 Lead mg/L <0.00020 <0.00020 <0.00020 0.0045 b Lithium mg/L 0.13 0.11 0.07 Manganese mg/L 0.10 0.22 0.18 Mercury µg/L <0.0020 <0.0020 <0.0020 0.026 Molybdenum mg/L 0.00046 <0.00020 <0.00020 0.073 Nickel mg/L 0.0022 0.0014 0.00076 0.118 b Selenium mg/L 0.00023 <0.00020 <0.00020 0.001 Silicon mg/L 5.4 4.9 5.1 Silver mg/L <0.00010 <0.00010 <0.00010 0.0001 Strontium mg/L 0.91 0.57 0.45 Sulphur mg/L 160 73 28 Thallium mg/L <0.00020 <0.00020 <0.00020 0.0008 Tin mg/L <0.0010 <0.0010 <0.0010 Titanium mg/L <0.0010 0.0011 0.0013 Uranium mg/L 0.0011 0.00041 <0.00010 0.015 Vanadium mg/L <0.0010 <0.0010 <0.0010 Zinc mg/L 0.011 0.013 0.014 0.03







CCME Guideline

10-Sep-13 10-Sep-13 10-Sep-13 10-Sep-13 10-Sep-13 Dissolved Metals Aluminum mg/L 0.0037 <0.0030 <0.0030 - - 0.1 a Antimony mg/L <0.00060 <0.00060 <0.00060 - - Arsenic mg/L 0.00052 0.00048 <0.00020 - - 0.005 Barium mg/L 0.053 0.05 0.11 - - Beryllium mg/L <0.0010 <0.0010 <0.0010 - - Boron mg/L 1.2 1.2 1.0 - - 1.5 Cadmium µg/L <0.0050 <0.0050 <0.0050 - - 0.042 b Chromium mg/L <0.0010 <0.0010 <0.0010 - - 0.0089 Cobalt mg/L <0.00030 <0.00030 <0.00030 - - Copper mg/L <0.00020 <0.00020 <0.00020 - - 0.003 b Iron mg/L <0.060 <0.060 0.078 0.960 0.260 0.3 Lead mg/L <0.00020 <0.00020 <0.00020 - - 0.0045 b Lithium mg/L 0.14 0.14 0.072 - - Manganese mg/L 0.042 0.012 0.140 0.058 0.200 Mercury µg/L 0.0023 0.002 <0.0020 - - 0.026 Molybdenum mg/L 0.00041 0.00052 <0.00020 - - 0.073 Nickel mg/L 0.0011 0.0009 <0.00050 - - 0.118 b Selenium mg/L <0.00020 <0.00020 <0.00020 - - 0.001 Silicon mg/L 6.0 5.8 5.0 - - Silver mg/L <0.00010 <0.00010 <0.00010 - - 0.0001 Strontium mg/L 0.97 0.93 0.49 - - Sulphur mg/L 170 170 26 - - Thallium mg/L <0.00020 <0.00020 <0.00020 - - 0.0008 Tin mg/L <0.0010 <0.0010 <0.0010 - - Titanium mg/L <0.0010 <0.0010 <0.0010 - - Uranium mg/L 0.00088 0.00083 <0.00010 - - 0.015 Vanadium mg/L <0.0010 <0.0010 <0.0010 - - Zinc mg/L <0.0030 <0.0030 <0.0030 - - 0.03


EMSC Diversion

Inlet

EMSC Diversion

Outlet

CCME Guideline

10-Sep-13 10-Sep-13 10-Sep-13 General Organics F2 (C10-C16 Hydrocarbons) mg/L <0.10 0.39 <0.10

F3 (C16-C34 Hydrocarbons) mg/L <0.20 1.1 <0.20

Naphthenic Acids mg/L 1.4 4.2 3.3

Volatile Organic Compounds F1 (C06-C10) - BTEX Purgeable µg/L <100 <100 <100

Benzene µg/L <0.40 <0.40 <0.40 370 Toluene µg/L <0.40 <0.40 <0.40 2 Ethylbenzene µg/L <0.40 <0.40 <0.40 90 o-Xylene µg/L <0.40 <0.40 <0.40

m&p-Xylenes µg/L <0.80 <0.80 <0.80

Xylenes (Total) µg/L <0.80 <0.80 <0.80

Parameter CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CCME Guideline

10-Sep-13 10-Sep-13 10-Sep-13

Polycyclic Aromatic Hydrocarbons Acenaphthene µg/L <0.10 <0.10 <0.10 5.8 Acenaphthylene µg/L <0.10 <0.10 <0.10 Acridine µg/L <0.20 <0.20 <0.20 4.4 Anthracene µg/L <0.010 <0.010 <0.010 0.012 Benzo(a)anthracene µg/L <0.0085 <0.0085 <0.0085 0.018 Benzo(b&j)fluoranthene µg/L <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene µg/L <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene µg/L <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene µg/L <0.050 <0.050 <0.050 Benzo(a)pyrene µg/L <0.0075 <0.0075 <0.0075 0.015 Benzo(e)pyrene µg/L <0.050 <0.050 <0.050 Chrysene µg/L <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene µg/L <0.0075 <0.0075 <0.0075 Fluoranthene µg/L <0.040 <0.040 <0.040 0.04 Fluorene µg/L <0.050 <0.050 <0.050 3 Indeno(1,2,3-cd)pyrene µg/L <0.0085 <0.0085 <0.0085 2-Methylnaphthalene µg/L <0.10 <0.10 <0.10 Naphthalene µg/L <0.10 <0.10 <0.10 1.1 Phenanthrene µg/L <0.050 <0.050 <0.050 0.4 Perylene µg/L <0.050 <0.050 <0.050 Pyrene µg/L <0.020 <0.020 <0.020 0.025 Quinoline µg/L <0.20 <0.20 <0.20 3.4

Bioassay Results


EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream


10-Sep-13

10-Sep-13

10-Sep-13

10-Sep-13

Toxicity Ceriodaphnia dubia Chronic Bioassay LC50 % 5* >100 49* 79 14* >100 >100 Ceriodaphnia dubia Chronic Bioassay LC25 % 70* 65 63* 60 78* >100 >100 Ceriodaphnia dubia Chronic Bioassay IC50 % 65* 70 60* 63 >100* 78 >100 Ceriodaphnia dubia Chronic Bioassay IC25 % >100* 5 79* 49 >100* 14 >100 Fathead Minnow Chronic Bioassay LC50 % >100 >100 >100 >100 Fathead Minnow Chronic Bioassay LC25 % >100 >100 >100 >100 Fathead Minnow Chronic Bioassay IC50 % >100 >100 >100 >100 Fathead Minnow Chronic Bioassay IC25 % >100 >100 >100 >100 96 hr Rainbow Trout acute lethality LC50 % >100 >100 >100 - 96 hr Rainbow Trout acute lethality LC25 % >100 >100 >100 -

96 hr Rainbow Trout Screen (% survival at 100% discharge concentration) % 100 100 100 -

100

Microtox IC50 (15 min, 15C) % >91 >91 >91 >91 Microtox IC20 (15 min, 15C) % >91 >91 >91 >91

* Transcription error

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of September.

Aurora North Mine Comments October 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C. EMSC Inlet water level was too low for discharge on October 2nd. EMSC Inlet and EMSC Outlet water level was too low for discharge on October 9th. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River







(mg/L) Flow


Flow (m3/day)


1-Oct-13 8.0 9 8815 7.9 18 10684 Not Discharging 0

2-Oct-13 Not Discharging 6868 8.0 13 10685 Not Discharging 5724

3-Oct-13 7.9 2 22813 8.0 11 10684 7.9 2 15263

4-Oct-13 8.0 2 14889 8.0 8 10686 7.8 2 6995

5-Oct-13 13038 10685 5724

6-Oct-13 23085 10684 14309

7-Oct-13 7.7 5 24039 7.9 6 10684 7.7 10 15263

8-Oct-13 7.8 1 14611 8.0 3 9126 8.0 11 8903

9-Oct-13 Not Discharging 3887 Not Discharging 4007 Not Discharging 2544

10-Oct-13 7.9 5 17424 8.0 6 10686 7.8 7 8585

11-Oct-13 8.0 1 24096 8.0 4 10687 7.8 4 15263

12-Oct-13 10738 10684 1908

13-Oct-13 8830 10754 0

14-Oct-13 * * 10889 * * 10904 * * 2067

15-Oct-13 8.0 1 14235 7.9 4 8228 7.9 3 5406


17-Oct-13 7.9 4 17694 8.0 2 10893 7.8 6 15263

18-Oct-13 7.8 2 12002 8.0 3 10891 7.8 3 3180

19-Oct-13 8830 10890 0

20-Oct-13 11366 10886 2544

21-Oct-13 7.9 4 13274 7.9 2 10885 7.8 13 4452

22-Oct-13 8.0 2 16771 8.0 3 10883 7.9 3 7949

23-Oct-13 7.9 2 13950 8.0 3 10881 7.9 6 9698


25-Oct-13 7.7 4 10340 7.9 5 10878 7.8 10 5724

26-Oct-13 8822 10877 0

27-Oct-13 12071 11589 2544

28-Oct-13 8.0 2 17166 7.9 3 11588 7.9 12 7631

29-Oct-13 8.0 2 16535 8.0 2 10874 7.9 8 6995


31-Oct-13 7.9 11 17462 8.0 7 10872 7.8 10 7949 Total 427758 325404 195554

Total Flow 753161

*Statutory Holiday


Sample Location Units CP

Diversion CP

Diversion CP

Diversion CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet


CCME Guideline

Sample Date 3-Oct-13 15-Oct-13 22-Oct-13 29-Oct-13 1-Oct-13 1-Oct-13 15-Oct-13 15-Oct-13 22-Oct-13 22-Oct-13 29-Oct-13 29-Oct-13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 509 567 587 632 601 428 591 463 634 463 650 466 Alkalinity (PP as CaCO3) mg/L <0.5 <5.0 <0.5 <0.5 <5.0 <5.0 <5.0 <5.0 <0.5 <0.5 <0.5 <0.5 Dissolved Inorganic Carbon mg/L 134 141 157 161 150 104 145 116 164 118 164 116 Dissolved Organic Carbon mg/L 13 14 15 14 12 11 13 14 13 12 13 10 Sulphide mg/L <0.002 <0.002 <0.002 <0.002 0.055 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 Major Ions Bicarbonate mg/L 622 692 716 772 733 522 721 565 774 565 793 569 Carbonate mg/L <0.5 <5.0 <0.5 <0.5 <5.0 <5.0 <5.0 <5.0 <0.5 <0.5 <0.5 <0.5 Hydroxide (OH) mg/L <0.5 <5.0 <0.5 <0.5 <5.0 <5.0 <5.0 <5.0 <0.5 <0.5 <0.5 <0.5 Calcium mg/L 143 159 133 127 59 58 130 62 93 61 94 61 Chloride mg/L 190 160 180 200 56 44 130 49 100 42 110 52 120 Magnesium mg/L 51 47 45 48 13 16 43 16 24 14 25 15 Potassium mg/L 7.3 7.4 6.8 7.7 4.8 4.7 6.6 5.2 5.4 4.7 6.0 5.2 Sodium mg/L 306 291 300 346 232 143 280 157 292 172 280 161 Sulphate mg/L 580 470 420 460 95 87 380 94 260 96 190 95 Dissolved Metals Iron mg/L 0.14 <0.01 <0.06 <0.01 0.09 <0.06 <0.01 <0.01 <0.06 <0.06 <0.01 <0.01 0.3 Manganese mg/L 0.041 0.102 0.086 0.010 0.014 <0.001 0.119 0.084 0.144 0.094 0.129 0.028 Oxygen Demand Biochemical Oxygen Demand mg/L <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 7 Nutrients

Ammonia Total as N mg/L 0.2 0.3 0.2 0.5 0.8 0.4 0.4 0.5 <0.1 0.2 0.7 0.6 2.5 daily 1.0 monthly

Nitrate as N mg/L 0.200 0.240 0.280 0.300 0.013 0.004 0.170 0.010 0.110 0.007 0.110 0.006 3 Nitrite as N mg/L 0.021 0.027 0.034 0.031 0.005 <0.003 0.020 <0.003 0.013 <0.003 0.013 <0.003 0.06 Phosphate Total as P mg/L 0.024 0.012 0.017 0.020 0.120 0.061 0.047 0.093 0.085 0.054 0.097 0.084 Field Parameters

Dissolved Oxygen mg/L 10.2 10.9 11.0 12.7 12.4 10.2 9.6 10.4 10.0 10.0 9.7 10.0 >5.0 daily* >6.5 weekly*

Temperature °C 9.9 7.9 6.2 3.8 7.6 8.7 8.1 8.5 6.3 7.4 3.3 4.0 *Dissolved Oxygen these are minimum levels for October 1st to March 31st.


Parameter Units CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream

Muskeg River

Upstream


CCME Guideline

8-Oct-13 8-Oct-13 8-Oct-13 8-Oct-13 8-Oct-13 15-Oct-13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 520 490 430 140 150 140 Alkalinity (PP as CaCO3) mg/L <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Dissolved Inorganic Carbon mg/L 130 130 110 35 36 34 Dissolved Organic Carbon mg/L 11 11 8.5 11 22 17 Sulphide mg/L <0.0020 <0.0020 <0.0020 - - - Total Suspended Solids mg/L 11 1 3 2 3 <1 50 pH - 8.0 7.8 8.0 8.0 8.0 7.8 6.0-9.5 Major Ions Hydroxide (OH) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Bicarbonate mg/L 630 600 520 170 180 180 Calcium mg/L 210 190 71 42 45 44 Carbonate mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Chloride mg/L 150 140 48 1.4 1.4 4.1 120 Magnesium mg/L 56 51 17 12 9 13 Potassium mg/L 7.9 7.7 6.0 1.4 1.7 1.4 Sodium mg/L 250 250 160 8.5 4.5 6.1 Sulphate mg/L 620 530 100 8.5 8.7 <1.0 Oxygen Demand Biochemical Oxygen Demand mg/L <2 <2 <2 - - - 7 Nutrients

Ammonia Total as N mg/L 0.630 0.540 0.390 0.086 0.056 <0.050 2.5 daily 1.0 monthly

Nitrate as N mg/L 0.170 0.069 0.009 0.036 0.970 <0.003 3 Nitrite as N mg/L 0.023 0.013 0.006 0.010 0.003 <0.003 0.06 Phosphate Total as P mg/L 0.017 0.082 0.074 0.032 0.081 0.031 Field Parameters

Dissolved Oxygen mg/L 9.8 10.3 10.4 9.9 10.7 10.6 >5.0 daily* >6.5 weekly*

Temperature °C 8.7 8.4 7.2 8.1 6.7 9.5 *Dissolved Oxygen these are minimum levels for October 1st to March 31st.

Parameter Units CP Diversion EMSC Diversion Inlet

EMSC Diversion

Outlet

CCME Guideline

8-Oct-13 8-Oct-13 8-Oct-13 Total Metals Aluminum mg/L 0.025 0.049 0.038 0.1 a Antimony mg/L <0.00060 <0.00060 <0.00060 Arsenic mg/L 0.00051 0.00047 0.00026 0.005 Barium mg/L 0.075 0.081 0.110 Beryllium mg/L <0.0010 <0.0010 <0.0010 Boron mg/L 0.83 0.88 0.99 1.5 Cadmium ug/L 0.0058 <0.0050 <0.0050 0.042 b Chromium mg/L <0.0010 <0.0010 <0.0010 0.0089 Cobalt mg/L 0.00038 0.00047 <0.00030 Copper mg/L 0.00041 0.0011 0.00075 0.003 b Iron mg/L 0.09 0.20 0.84 0.3 Lead mg/L <0.00020 <0.00020 <0.00020 0.0045 b Lithium mg/L 0.11 0.10 0.08 Manganese mg/L 0.30 0.29 0.24 Mercury ug/L <0.0020 <0.0020 <0.0020 0.026 Molybdenum mg/L 0.00053 0.0005 <0.00020 0.073 Nickel mg/L 0.0025 0.0022 0.00091 0.118 b Selenium mg/L 0.00023 0.00023 <0.00020 0.001 Silicon mg/L 5.6 5.7 5.3 Silver mg/L <0.00010 <0.00010 <0.00010 0.0001 Strontium mg/L 0.87 0.82 0.46 Sulphur mg/L 200 180 29 Thallium mg/L <0.00020 <0.00020 <0.00020 0.0008 Tin mg/L <0.0010 <0.0010 <0.0010 Titanium mg/L <0.0010 0.0018 0.0012 Uranium mg/L 0.0013 0.0012 0.00012 0.015 Vanadium mg/L <0.0010 <0.0010 <0.0010 Zinc mg/L 0.0091 0.0140 0.0069 0.03 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)

Parameter Units CP Diversion EMSC

Diversion Inlet

EMSC Diversion

Outlet



Muskeg River Upstream

CCME Guideline

8-Oct-13 8-Oct-13 8-Oct-13 8-Oct-13 8-Oct-13 15-Oct-13 Dissolved Metals Aluminum mg/L 0.004 0.024 0.003 - - - 0.1 a Antimony mg/L <0.00060 <0.00060 <0.00060 - - - Arsenic mg/L 0.00047 0.00047 <0.00020 - - - 0.005 Barium mg/L 0.072 0.075 0.100 - - - Beryllium mg/L <0.0010 <0.0010 <0.0010 - - - Boron mg/L 0.81 0.84 0.95 - - - 1.5 Cadmium ug/L <0.0050 <0.0050 <0.0050 - - - 0.042 b Chromium mg/L <0.0010 <0.0010 <0.0010 - - - 0.0089 Cobalt mg/L 0.00033 0.00039 <0.00030 - - - Copper mg/L 0.00027 0.00024 0.00048 - - - 0.003 b Iron mg/L <0.060 <0.060 <0.060 0.33 0.54 0.48 0.3 Lead mg/L <0.00020 <0.00020 <0.00020 - - - 0.0045 b Lithium mg/L 0.11 0.10 0.08 - - - Manganese mg/L 0.26 0.17 0.11 0.13 0.05 0.04 Mercury ug/L <0.0020 <0.0020 <0.0020 - - - 0.026 Molybdenum mg/L 0.00071 0.00063 <0.00020 - - - 0.073 Nickel mg/L 0.0026 0.0018 0.0015 - - - 0.118 b Selenium mg/L 0.00022 <0.00020 <0.00020 - - - 0.001 Silicon mg/L 5.6 5.3 5.0 - - - Silver mg/L <0.00010 <0.00010 <0.00010 - - - 0.0001 Strontium mg/L 0.87 0.82 0.46 - - - Sulphur mg/L 190 170 27 - - - Thallium mg/L <0.00020 <0.00020 <0.00020 - - - 0.0008 Tin mg/L <0.0010 <0.0010 <0.0010 - - - Titanium mg/L <0.0010 <0.0010 <0.0010 - - - Uranium mg/L 0.0015 0.0013 0.00013 - - - 0.015 Vanadium mg/L <0.0010 <0.0010 <0.0010 - - - Zinc mg/L 0.0059 0.0058 0.0032 - - - 0.03 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)


EMSC Diversion

Outlet

CCME Guideline

8-Oct-13 8-Oct-13 8-Oct-13 General Organics F2 (C10-C16 Hydrocarbons) mg/L <0.10 <0.10 <0.10 F3 (C16-C34 Hydrocarbons) mg/L <0.20 0.22 <0.20 Naphthenic Acids mg/L 1.6 4.2 4.1 Volatile Organic Compounds F1 (C06-C10) - BTEX Purgeable ug/L <100 <100 <100 Benzene ug/L <0.40 <0.40 <0.40 370 Toluene ug/L <0.40 <0.40 <0.40 2 Ethylbenzene ug/L <0.40 <0.40 <0.40 90 o-Xylene ug/L <0.40 <0.40 <0.40 m&p-Xylenes ug/L <0.80 <0.80 <0.80 Xylenes (Total) ug/L <0.80 <0.80 <0.80 Polycyclic Aromatic Hydrocarbons Acenaphthene ug/L <0.10 <0.10 <0.10 5.8 Acenaphthylene ug/L <0.10 <0.10 <0.10 Acridine ug/L <0.20 <0.20 <0.20 4.4 Anthracene ug/L <0.010 <0.010 <0.010 0.012 Benzo(a)anthracene ug/L <0.0085 <0.0085 <0.0085 0.018 Benzo(b&j)fluoranthene ug/L <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene ug/L <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene ug/L <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene ug/L <0.050 <0.050 <0.050 Benzo(a)pyrene ug/L <0.0075 <0.0075 <0.0075 0.015 Benzo(e)pyrene ug/L <0.050 <0.050 <0.050 Chrysene ug/L <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene ug/L <0.0075 <0.0075 <0.0075 Fluoranthene ug/L <0.010 <0.010 <0.010 0.04 Fluorene ug/L <0.050 <0.050 <0.050 3 Indeno(1,2,3-cd)pyrene ug/L <0.0085 <0.0085 <0.0085 2-Methylnaphthalene ug/L <0.10 <0.10 <0.10 Naphthalene ug/L <0.10 <0.10 <0.10 1.1 Phenanthrene ug/L <0.050 <0.050 <0.050 0.4 Perylene ug/L <0.050 <0.050 <0.050 Pyrene ug/L <0.020 <0.020 <0.020 0.025 Quinoline ug/L <0.20 <0.20 <0.20 3.4

Bioassay Results

Parameter Units CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream


8-Oct-13 8-Oct-13 8-Oct-13 15-Oct-13

Toxicity

Ceriodaphnia dubia Chronic Bioassay LC50 % - - - >100 Ceriodaphnia dubia Chronic Bioassay LC25 % - - - >100 Ceriodaphnia dubia Chronic Bioassay IC50 % - - - >100 Ceriodaphnia dubia Chronic Bioassay IC25 % - - - >100 Fathead Minnow Chronic Bioassay LC50 % - - - >100 Fathead Minnow Chronic Bioassay LC25 % - - - >100 Fathead Minnow Chronic Bioassay IC50 % - - - >100 Fathead Minnow Chronic Bioassay IC25 % - - - >100 96 hr Rainbow Trout acute lethality LC50 % >100 >100 >100 - 96 hr Rainbow Trout acute lethality LC25 % >100 >100 >100 - 96 hr Rainbow Trout Screen (% survival in 100% discharge concentration) % 100 100 100 - 100

Microtox IC50 (15 min, 15C) % - - - >91 Microtox IC20 (15 min, 15C) % - - - >91

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of October.

Aurora North Mine Comments November 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C.

Please note that Stanley Creek upstream Dissolved Oxygen three times per week results for October are included in this report on page 6.

All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.with the exception of: AER Reference No. 277748, on November 12th, at Aurora North Mine, the routine monthly bioassay discharge sample was collected and shipped to the laboratory. The "inlet" system rainbow trout 96-hour bioassay result was 90% survival in 100% discharge sample. Pond #1-04 was the upstream contributor to the "inlet" system discharge on November 12th. The "outlet" system rainbow trout 96-hour bioassay result was 100% survival in 100% discharge sample. On November 13th, at Aurora North Mine, the routine monthly bioassay for Pond #1-05 rainbow trout 96-hour bioassay result was 100% survival in 100% discharge sample. Pond #1-05 is a contributor to the "inlet" system discharge, however was not flowing to the “inlet” discharge due to pumping issues on November 12th. On November 19th, at Aurora North Mine, an "inlet" system discharge resample rainbow trout 96-hour bioassay result was 100% survival in 100% discharge sample. The Aurora water diversion "inlet" system had normal operation prior to the November 12th bioassay sample. There were no concerns or issues related to the routine sampling and comprehensive lab analysis results (chemical and bioassay tests) prior to and on November 12th. At this time Syncrude has not determined a cause for this November 12th "inlet" system discharge <100% rainbow trout result, however it is potentially random mortality that can occur due to the laboratory variability of using living organisms.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River

Downstream July 9 1 2 1 2 - 1 August 13 - 2 - 2 1 - September 10 1 2 1 2 - 1 October 8 - 2 - 2 1 - November 12 1 2 1 2 - 1 December 10 - 2 - 2 1 -

1 = Chronic toxicity test using ceriodaphnia and fathead minnows (including microtox IC metric) 2 = 96-hour multiple concentration acute lethality test using rainbow trout





(mg/L) Flow


Flow (m3/day)


1-Nov-13 7.9 4 18,103 7.9 4 10,868 7.8 9 8,585 2-Nov-13 9,886 11,314 0 3-Nov-13 9,503 10,868 0 4-Nov-13 8.0 1 11,102 7.9 3 10,867 Not Discharging 1590 5-Nov-13 7.8 2 17,130 7.9 3 10,867 7.8 6 7,631 6-Nov-13 7.7 7 16,494 7.8 2 10,866 7.8 3 6,995 7-Nov-13 8.0 3 18,729 8.0 4 10,865 7.9 5 9,221 8-Nov-13 8.0 1 9,491 8.0 3 10,864 Not Discharging 0 9-Nov-13 9,494 10,864 0 10-Nov-13 10,447 10,862 954 11-Nov-13 * * 9,495 * * 10,861 * * 0 12-Nov-13 8.2 <1 9,502 8.2 3 10,861 Not Discharging 0 13-Nov-13 7.9 3 22,212 8.0 4 10,860 8.0 2 12,719 14-Nov-13 7.7 4 17,447 7.8 6 10,860 7.8 4 7,949 15-Nov-13 7.8 3 22,202 7.7 6 10,859 7.8 4 12,719 16-Nov-13 9,491 10,857 0 17-Nov-13 11,704 10,856 2,226 18-Nov-13 7.8 3 18,391 7.7 3 10,855 7.8 1 8,903 19-Nov-13 7.8 1 9,483 7.8 4 10,855 Not Discharging 0 20-Nov-13 7.8 1 12,010 7.7 7 10,855 Not Discharging 2544 21-Nov-13 8.0 1 14,488 7.9 3 10,853 7.9 2 9,221 22-Nov-13 7.9 2 9,477 7.9 3 10,854 Not Discharging 0 23-Nov-13 9,490 9,517 0 24-Nov-13 4,811 8,405 1,908 25-Nov-13 7.9 3 20,931 7.8 7 10,853 Not Discharging 11447 26-Nov-13 8.0 <1 12,672 7.9 5 10,852 8.0 3 3,180 27-Nov-13 7.8 7 6,464 8.0 <1 10,852 Not Discharging 2226 28-Nov-13 8.0 1 14,516 7.9 4 10,853 7.9 3 9,221 29-Nov-13 7.8 4 5,295 7.9 4 10,851 Not Discharging 0 30-Nov-13 1,757 10,851 0

Total 372,220 322,424 119,240

Total Flow 694,644

*Statutory Holiday



CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet


CCME Guideline

Sample Date 5-Nov-13 5-Nov-13 5-Nov-13 19-Nov-13 19-Nov-13 21-Nov-13 26-Nov-13 26-Nov-13 26-Nov-13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 602 640 468 671 471 769 820 784 468 - - Alkalinity (PP as CaCO3) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Dissolved Inorganic Carbon mg/L 164 159 123 152 116 190 195 193 109 - - Dissolved Organic Carbon mg/L 15 14 11 12 10 15 14 15 12 - - Sulphide mg/L <0.002 <0.002 <0.002 0.034 <0.002 <0.002 <0.002 0.0076 <0.002 - - Major Ions Bicarbonate mg/L 735 781 571 819 574 938 1000 956 572 - - Carbonate mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Calcium mg/L 158 121 59 57 54 168 170 169 73 - - Chloride mg/L 180 140 54 56 49 210 230 200 50 - 120 Hydroxide (OH) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Magnesium mg/L 44 39 14 13 15 44 50 43 18 - - Potassium mg/L 7.0 6.3 4.8 5.6 5.2 8.8 10 9.4 5.8 - - Sodium mg/L 327 303 167 273 168 409 443 412 174 - - Sulphate mg/L 560 390 96 100 97 530 540 470 98 - - Dissolved Metals Iron mg/L <0.01 <0.01 <0.01 <0.01 <0.01 0.01 <0.01 <0.01 <0.01 - 0.3 Manganese mg/L 0.099 0.15 0.13 0.16 0.096 0.24 0.11 0.19 0.16 - - Oxygen Demand Biochemical Oxygen Demand mg/L <2 <2 <2 <2 <2 <2 <2 <2 <2 7 - Nutrients

Ammonia Total as N mg/L 0.5 0.6 0.5 0.9 0.6 0.9 0.9 0.9 0.5 2.5 daily 1.0 monthly -

Nitrate as N mg/L 0.270 0.180 0.004 0.005 0.041 0.280 0.310 0.310 0.004 - 3 Nitrite as N mg/L 0.016 0.009 <0.003 <0.003 <0.003 0.012 0.010 0.010 <0.003 - 0.060 Phosphate Total as P mg/L 0.07 0.09 0.08 0.20 0.08 0.04 0.05 0.07 0.09 - -

of 121

Sample Date Sample Location DO (mg/L) Temperature (OC)

Sample Date Sample Location DO (mg/L) Temperature (OC)

Approval 26-02 >5.0 daily* >6.5 weekly*

1-Oct-13 Stanley Creek Upstream 13.2 7.5

1-Oct-13 EMSC Diversion Inlet 12.4 7.6


1-Oct-13 EMSC Diversion Outlet 10.2 8.7


3-Oct-13 CP Diversion 10.2 9.9











17-Oct-13 Stanley Creek Upstream 10.9 4



22-Oct-13 CP Diversion 11 6.2


22-Oct-13 EMSC Diversion Inlet 10 6.3


22-Oct-13 EMSC Diversion Outlet 10 7.4






29-Oct-13 EMSC Diversion Outlet 10 4

5-Nov-13 Stanley Creek Upstream 11.7 0.1

5-Nov-13 CP Diversion 13.9 1.8


5-Nov-13 EMSC Diversion Inlet 11.6 1.8


5-Nov-13 EMSC Diversion Outlet 11.5 3.8






13-Nov-13 CP Diversion 12 0.5

19-Nov-13 Stanley Creek Upstream 10.5 0





21-Nov-13 CP Diversion 8 -0.1


26-Nov-13 CP Diversion 10.9 -0.4


26-Nov-13 EMSC Diversion Inlet 10.6 0 28-Nov-13 Stanley Creek Upstream 11.2 0.1


*Dissolved Oxygen these are minimum levels for October 1st to March 31st.

of 121


Parameter Units CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Stanley Creek

Upstream


CCME Guideline

13-Nov-13 12-Nov-13 12-Nov-13 12-Nov-13 12-Nov-13 Conventional Parameters Alkalinity (PP as CaCO3) mg/L <0.50 <0.50 <0.50 <0.50 <0.50 Alkalinity (Total as CaCO3) mg/L 620 620 450 170 160 Dissolved Inorganic Carbon mg/L 150 150 100 39 37 Dissolved Organic Carbon mg/L 11.0 6.8 6.5 18.0 8.0 Sulphide mg/L <0.0020 <0.0020 <0.0020 - - Total Suspended Solids mg/L 2 <1 3 <1 2 50 pH - 8.0 8.2 8.2 7.9 8.1 6.0-9.5 Major Ions Bicarbonate mg/L 750 760 550 210 200 Carbonate mg/L <0.50 <0.50 <0.50 <0.50 <0.50 Hydroxide (OH) mg/L <0.50 <0.50 <0.50 <0.50 <0.50 Calcium mg/L 170 85 59 42 51 Chloride mg/L 190 54 46 4.1 <1.0 120 Magnesium mg/L 47 18 14 12 11 Potassium mg/L 8.9 6.9 5.5 0.9 1.7 Sodium mg/L 320 250 150 9.9 4.2 Sulphate mg/L 510 120 90 <1.0 6.9 Oxygen Demand Biochemical Oxygen Demand mg/L <2 <2 <2 - - 7 Nutrients Ammonia Total as N mg/L 0.59 0.74 0.52 0.10 0.12 2.5 daily

1.0 monthly

Nitrate as N mg/L 0.320 0.003 0.005 0.032 0.047 3 Nitrite as N mg/L 0.018 <0.003 <0.003 <0.003 <0.003 0.06 Phosphate Total as P mg/L 0.025 0.110 0.089 0.025 0.073 Field Parameters

Dissolved Oxygen mg/L 12.0 8.2 11.8 9.9 12.3 >5.0 daily* >6.5 weekly*

Temperature °C 0.5 4.2 2.5 0.2 0.2 *Dissolved Oxygen these are minimum levels for October 1st to March 31st.

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CCME Guideline

13-Nov-13 12-Nov-13 12-Nov-13 Total Metals Aluminum mg/L 0.023 0.008 0.028 0.1 a Antimony mg/L <0.0015 <0.00060 <0.00060 Arsenic mg/L <0.00050 <0.00020 0.00024 0.005 Barium mg/L 0.096 0.150 0.110 Beryllium mg/L <0.0025 <0.0010 <0.0010 Boron mg/L 1.1 1.1 1.0 1.5 Cadmium ug/L <0.013 0.007 0.012 0.042 b Chromium mg/L <0.0025 <0.0010 <0.0010 0.0089 Cobalt mg/L <0.00075 <0.00030 <0.00030 Copper mg/L <0.00050 0.00027 0.00043 0.003 b Iron mg/L 0.11 0.31 0.81 0.3 Lead mg/L <0.00050 <0.00020 <0.00020 0.0045 b Lithium mg/L 0.140 0.095 0.079 Manganese mg/L 0.23 0.31 0.20 Mercury ug/L <0.0020 <0.0020 <0.0020 0.026 Molybdenum mg/L <0.00050 <0.00020 <0.00020 0.073 Nickel mg/L 0.0022 0.00079 <0.00050 0.118 b Selenium mg/L <0.00050 <0.00020 <0.00020 0.001 Silicon mg/L 5.3 5.3 4.6 Silver mg/L <0.00025 <0.00010 <0.00010 0.0001 Strontium mg/L 1.00 0.45 0.48 Sulphur mg/L 160 36 26 Thallium mg/L <0.00050 <0.00020 <0.00020 0.0008 Tin mg/L <0.0025 <0.0010 <0.0010 Titanium mg/L <0.0025 <0.0010 <0.0010 Uranium mg/L 0.00092 <0.00010 <0.00010 0.015 Vanadium mg/L <0.0025 <0.0010 <0.0010 Zinc mg/L <0.0075 0.0074 0.0091 0.03 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data) CCME water quality guidelines for the protection of aquatic life; fresh water; long term (2013)

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Diversion Inlet

EMSC Diversion

Outlet



CCME Guideline

13-Nov-13 12-Nov-13 12-Nov-13 12-Nov-13 12-Nov-13 Dissolved Metals Aluminum mg/L <0.0030 <0.0030 0.0057 - - 0.1 a Antimony mg/L <0.00060 <0.00060 <0.00060 - - Arsenic mg/L 0.00028 <0.00020 <0.00020 - - 0.005 Barium mg/L 0.094 0.16 0.10 - - Beryllium mg/L <0.0010 <0.0010 <0.0010 - - Boron mg/L 1.1 1.1 1.0 - - 1.5 Cadmium ug/L 0.0084 0.015 0.014 - - 0.042 b Chromium mg/L <0.0010 <0.0010 <0.0010 - - 0.0089 Cobalt mg/L <0.00030 <0.00030 <0.00030 - - Copper mg/L <0.00020 <0.00020 <0.00020 - - 0.003 b Iron mg/L <0.060 <0.060 0.160 0.750 0.200 0.3 Lead mg/L <0.00020 <0.00020 <0.00020 - - 0.0045 b Lithium mg/L 0.130 0.098 0.072 - - Manganese mg/L 0.21 0.32 0.15 0.11 0.27 Mercury ug/L <0.0020 <0.0020 <0.0020 - - 0.026 Molybdenum mg/L 0.00033 <0.00020 <0.00020 - - 0.073 Nickel mg/L 0.002 0.00073 <0.00050 - - 0.118 b Selenium mg/L <0.00020 <0.00020 <0.00020 - - 0.001 Silicon mg/L 5.0 5.3 4.2 - - Silver mg/L <0.00010 <0.00010 <0.00010 - - 0.0001 Strontium mg/L 1.00 0.48 0.46 - - Sulphur mg/L 150 34 24 - - Thallium mg/L <0.00020 <0.00020 <0.00020 - - 0.0008 Tin mg/L <0.0010 <0.0010 <0.0010 - - Titanium mg/L <0.0010 <0.0010 <0.0010 - - Uranium mg/L 0.00092 <0.00010 <0.00010 - - 0.015 Vanadium mg/L <0.0010 <0.0010 <0.0010 - - Zinc mg/L <0.0030 <0.0030 <0.0030 - - 0.03 a - Aluminum based on pH>6.5 b - based on hardness of CaCO3 =132 mg/L (minimum hardness value from historical data)

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CCME Guideline

13-Nov-13 12-Nov-13 12-Nov-13 General Organics F2 (C10-C16 Hydrocarbons) mg/L <0.10 <0.10 <0.10 F3 (C16-C34 Hydrocarbons) mg/L <0.20 <0.20 <0.20 Naphthenic Acids mg/L 3.3 5.3 4.6 Volatile Organic Compounds F1 (C06-C10) - BTEX Purgeable ug/L <100 <100 <100 Benzene ug/L <0.40 <0.40 <0.40 370 Toluene ug/L <0.40 <0.40 <0.40 2 Ethylbenzene ug/L <0.40 <0.40 <0.40 90 o-Xylene ug/L <0.40 <0.40 <0.40 m&p-Xylenes ug/L <0.80 <0.80 <0.80 Xylenes (Total) ug/L <0.80 <0.80 <0.80 Polycyclic Aromatic Hydrocarbons Acenaphthene ug/L <0.10 <0.10 <0.10 5.8 Acenaphthylene ug/L <0.10 <0.10 <0.10 Acridine ug/L <0.20 <0.20 <0.20 4.4 Anthracene ug/L <0.010 <0.010 <0.010 0.012 Benzo(a)anthracene ug/L <0.0085 <0.0085 <0.0085 0.018 Benzo(b&j)fluoranthene ug/L <0.0085 <0.0085 <0.0085 Benzo(k)fluoranthene ug/L <0.0085 <0.0085 <0.0085 Benzo(g,h,I)perylene ug/L <0.0085 <0.0085 <0.0085 Benzo(c)phenanthrene ug/L <0.050 <0.050 <0.050 Benzo(a)pyrene ug/L <0.0075 <0.0075 <0.0075 0.015 Benzo(e)pyrene ug/L <0.050 <0.050 <0.050 Chrysene ug/L <0.0085 <0.0085 <0.0085 Dibenz(a,h)anthracene ug/L <0.0075 <0.0075 <0.0075 Fluoranthene ug/L <0.010 <0.010 <0.010 0.04 Fluorene ug/L <0.050 <0.050 <0.050 3 Indeno(1,2,3-cd)pyrene ug/L <0.0085 <0.0085 <0.0085 2-Methylnaphthalene ug/L <0.10 <0.10 <0.10 Naphthalene ug/L <0.10 <0.10 <0.10 1.1 Phenanthrene ug/L <0.050 <0.050 <0.050 0.4 Perylene ug/L <0.050 <0.050 <0.050 Pyrene ug/L <0.020 <0.020 <0.020 0.025 Quinoline ug/L <0.20 <0.20 <0.20 3.4

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Bioassay Results


Diversion Inlet

EMSC Diversion

Outlet

EMSC Diversion

Inlet

Muskeg River

Downstream


13-Nov-13 12-Nov-13 12-Nov-13 19-Nov-13 12-Nov-13

Toxicity

Ceriodaphnia dubia Chronic Bioassay LC50 % 79 >100 >100 - >100

Ceriodaphnia dubia Chronic Bioassay LC25 % 57 88 96 - >100

Ceriodaphnia dubia Chronic Bioassay IC50 % 57 78 96 - 47

Ceriodaphnia dubia Chronic Bioassay IC25 % 47 39 48 - 1.6

Fathead Minnow Chronic Bioassay LC50 % >100 >100 >100 - >100

Fathead Minnow Chronic Bioassay LC25 % 96 >100 >100 - >100

Fathead Minnow Chronic Bioassay IC50 % >100 >100 >100 - >100

Fathead Minnow Chronic Bioassay IC25 % 40 47 100 - 3.5

96 hr Rainbow Trout acute lethality LC50 % >100 >100 >100 >100 -

96 hr Rainbow Trout acute lethality LC25 % >100 >100 >100 >100 -

96 hr Rainbow Trout Screen (% survival in 100% discharge concentration) % 100

90*

100 100 - 100

Microtox IC50 (15 min, 15C) % >91 >91 >91 - >91

Microtox IC20 (15 min, 15C) % >91 >91 85 - >91 * AER Reference No. 277748

of 121

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of November.

of 121

Aurora North Mine Comments December 2013 All sampling and analysis was conducted as scheduled as per Syncrude approval 26-02, Table 4.2-C. EMSC Inlet water level was too low for discharge on December 6th and 9th. All parameters were in compliance with Syncrude approval 26-02, Table 4.2-A.


Sample Month

Sample Date

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream

Muskeg River



of 121





(mg/L) Flow


Flow (m3/day)


1-Dec-13 - - 7513 - - 10850 - - 2226

2-Dec-13 7.7 <1 14516 7.7 2 10850 7.6 3 9221 3-Dec-13 7.7 <1 7168 7.7 4 10850 Not Discharging 1908 4-Dec-13 8.1 2 17528 8.1 6 10849 8.0 1 13991 5-Dec-13 7.9 4 675 8.0 3 10848 Not Discharging 0 6-Dec-13 Not Discharging 3920 8.0 3 10848 Not Discharging 0 7-Dec-13 - - 3453 - - 10849 - - 0 8-Dec-13 - - 2483 - - 10848 - - 0 9-Dec-13 Not Discharging 3438 7.9 6 10847 Not Discharging 0 10-Dec-13 7.8 2 20509 7.9 4 10847 7.9 <1 15263 11-Dec-13 7.9 <1 8426 7.9 5 10847 8.0 3 3180 12-Dec-13 8.0 <1 5241 8.0 1 10847 Not Discharging 0 13-Dec-13 8.0 1 5244 7.9 5 10846 Not Discharging 0 14-Dec-13 - - 2010 - - 10847 - - 0 15-Dec-13 - - 10662 - - 10846 - - 5406 16-Dec-13 8.0 1 12742 7.9 4 10846 8.0 2 9221 17-Dec-13 8.0 <1 3139 8.0 3 10846 8.0 <1 2544 18-Dec-13 7.8 3 726 7.9 3 10845 Not Discharging 0 19-Dec-13 7.8 9 3229 7.9 6 10846 Not Discharging 0 20-Dec-13 7.8 3 658 7.8 3 10843 Not Discharging 0 21-Dec-13 - - 1328 - - 10843 - - 0 22-Dec-13 - - 5239 - - 10845 - - 0 23-Dec-13 8.0 3 10227 8.0 3 10844 8.0 <1 7949 24-Dec-13 7.7 <1 643 7.8 3 10844 Not Discharging 0 25-Dec-13 * * 658 * * 10845 * * 0 26-Dec-13 * * 652 * * 10844 * * 0 27-Dec-13 7.6 17 2931 7.9 3 10843 Not Discharging 0 28-Dec-13 - - 1648 - - 10846 - - 0 29-Dec-13 - - 12547 - - 10845 - - 11129 30-Dec-13 7.8 3 12186 8.0 4 10826 8.0 3 9539 31-Dec-13 7.8 <1 646 8.0 2 10832 Not Discharging 0

Total 181985 336200 91577 Total Flow 518185

*Statutory Holiday

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EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CP Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet


CCME Guideline

Sample Date 3-Dec-13 3-Dec-13 4-Dec-13 17-Dec-13 17-Dec-13 17-Dec-13 23-Dec-13 23-Dec-13 23-Dec-13 30-Dec-13 30-Dec-13 30-Dec-13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 645 469 845 809 745 471 738 719 478 806 555 478 - - Alkalinity (PP as CaCO3) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Dissolved Inorganic Carbon mg/L 155 119 206 211 196 123 208 187 126 221 132 117 - - Dissolved Organic Carbon mg/L 11 11 13 15 15 9 15 14 9 16 10 10 - - Sulphide mg/L 0.060 <0.002 <0.002 <0.002 <0.002 0.026 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 - - Major Ions Bicarbonate mg/L 786 572 1030 987 908 574 901 877 583 983 677 584 - - Carbonate mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Hydroxide (OH) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Calcium mg/L 75 73 143 201 176 62 197 191 59 166 188 61 - - Chloride mg/L 55 51 260 220 200 52 220 180 54 250 97 53 - 120 Magnesium mg/L 15 17 52 59 55 17 54 50 16 52 45 16 - - Potassium mg/L 5.8 5.8 10.4 9.5 9.0 5.6 9.1 8.0 5.5 9.0 4.7 5.1 - - Sodium mg/L 278 177 504 407 382 169 427 353 174 436 179 171 - - Sulphate mg/L 120 96 460 580 550 86 580 520 87 590 420 85 - - Dissolved Metals Iron mg/L <0.01 <0.01 0.02 <0.06 <0.06 <0.06 0.01 <0.01 0.01 <0.06 <0.06 <0.06 - 0.3 Manganese mg/L 0.24 0.16 0.25 0.38 0.22 0.14 0.32 0.35 0.15 0.05 0.52 0.12 - - Oxygen Demand Biochemical Oxygen Demand mg/L 3 <2 <2 <2 <2 <2 <2 <2 3 <2 <2 3 7 - Nutrients

Ammonia Total as N mg/L 0.90 0.60 1.00 0.80 0.78 0.55 0.80 0.60 0.50 1.00 0.40 0.60 2.5 daily 1.0 monthly -

Nitrate as N mg/L 0.012 0.007 0.320 0.380 0.370 0.004 0.440 0.400 0.034 0.500 0.160 0.009 - 3 Nitrite as N mg/L <0.003 <0.003 0.009 0.006 0.008 <0.003 0.006 0.006 0.003 0.009 <0.003 <0.003 - 0.060 Phosphate Total as P mg/L 0.150 0.085 0.065 0.045 0.057 0.082 0.045 0.043 0.088 0.055 0.055 0.081 - -

of 121

Sample Date Sample Location

Dissolved Oxygen (mg/L)

Temperature

(OC) 3-Dec-13 Stanley Creek Upstream 11.1 0.3 4-Dec-13 Stanley Creek Upstream 11.8 0 5-Dec-13 Stanley Creek Upstream 11.5 0.2 10-Dec-13 Stanley Creek Upstream 11.4 0.1 11-Dec-13 Stanley Creek Upstream 12.9 0 12-Dec-13 Stanley Creek Upstream 10.4 0 17-Dec-13 Stanley Creek Upstream 12.5 0 18-Dec-13 Stanley Creek Upstream 11.8 0.5 19-Dec-13 Stanley Creek Upstream 11.2 0 23-Dec-13 Stanley Creek Upstream 12.3 0.2 24-Dec-13 Stanley Creek Upstream 11.8 0.3 27-Dec-13 Stanley Creek Upstream 12 0.5 30-Dec-13 Stanley Creek Upstream 8.7 0 31-Dec-13 Stanley Creek Upstream 11.7 0

Sample Date Sample Location

Dissolved Oxygen (mg/L)

Temperature

(OC)

Approval 26-02 Limit >5.0 daily* >6.5 weekly* -

3-Dec-13 EMSC Diversion Inlet 6.5 2 3-Dec-13 EMSC Diversion Outlet 10.9 3.8 4-Dec-13 CP Diversion 13 0 10-Dec-13 CP Diversion 12.1 0 10-Dec-13 EMSC Diversion Inlet 9.6 1.7 10-Dec-13 EMSC Diversion Outlet 9 1.3 17-Dec-13 CP Diversion 13.6 -0.1 17-Dec-13 EMSC Diversion Inlet 12.4 0.2 17-Dec-13 EMSC Diversion Outlet 7.8 1.4 23-Dec-13 CP Diversion 13.7 0.3 23-Dec-13 EMSC Diversion Inlet 12.6 1 23-Dec-13 EMSC Diversion Outlet 9.3 3 30-Dec-13 CP Diversion 13 0 30-Dec-13 EMSC Diversion Inlet 7.3 -0.1 30-Dec-13 EMSC Diversion Outlet 9.8 0.1

*These are minimum levels for Oct 1st to March 31st

of 121


Parameter Units CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Downstream

Muskeg River

Upstream



CCME Guideline

10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 Conventional Parameters Alkalinity (Total as CaCO3) mg/L 770 470 440 200 270 160 - - Alkalinity (PP as CaCO3) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Dissolved Inorganic Carbon mg/L 180 110 100 50 71 39 - - Dissolved Organic Carbon mg/L 12.0 6.8 7.6 22.0 17.0 8.6 - - Sulphide mg/L <0.002 0.046 <0.002 - - - - - Total Suspended Solids mg/L <1 2 4 3 5 26 50 - pH - 7.9 7.8 7.9 7.5 7.4 7.8 6.0-9.5 - Major Ions Bicarbonate mg/L 940 570 540 250 330 200 - - Carbonate mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Hydroxide (OH) mg/L <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - - Calcium mg/L 170 85 64 53 76 48 - - Chloride mg/L 210 37 49 4.2 4.2 1.4 - 120 Magnesium mg/L 52 21 19 16 22 12 - - Potassium mg/L 11.0 5.0 6.7 1.2 1.4 1.4 - - Sodium mg/L 390 150 170 12 9.5 4.5 - - Sulphate mg/L 480 120 93 <1.0 <1.0 8.3 - - Oxygen Demand Biochemical Oxygen Demand mg/L <2 3 3 - - - 7 - Nutrients

Ammonia Total as N mg/L 0.95 0.74 0.59 0.51 0.67 0.13 2.5 daily 1.0 monthly -

Nitrate as N mg/L 0.380 0.008 0.006 0.036 0.029 0.074 - 3 Nitrite as N mg/L 0.007 <0.003 <0.003 <0.003 <0.003 <0.003 - 0.06 Phosphate Total as P mg/L 0.059 0.130 0.087 0.031 0.049 0.099 - - Field Parameters Temperature °C 0.0 1.7 1.3 0.0 0.1 0.1 - -

Dissolved Oxygen mg/L 12.1 9.6 9.0 6.9 1.8 11.4 >5.0 daily* >6.5 weekly* -

*Dissolved Oxygen these are minimum levels for October 1st to March 31st.

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CCME Guideline

10/Dec/13 10/Dec/13 10/Dec/13 Total Metals Aluminum mg/L 0.012 0.008 0.014 0.1 a Antimony mg/L <0.0015 <0.0006 <0.0006 - Arsenic mg/L <0.0005 <0.0002 <0.0002 0.005 Barium mg/L 0.11 0.13 0.11 - Beryllium mg/L <0.0025 <0.001 <0.001 - Boron mg/L 1.30 0.68 0.96 1.5 Cadmium ug/L 0.015 0.009 0.015 0.042 b Chromium mg/L <0.0025 <0.001 <0.001 0.0089 Cobalt mg/L <0.00075 0.00032 <0.0003 - Copper mg/L 0.0008 0.0004 0.0005 0.003 b Iron mg/L 0.12 0.78 0.79 0.3 Lead mg/L <0.0005 <0.0002 <0.0002 0.0045 b Lithium mg/L 0.16 0.067 0.077 - Manganese mg/L 0.38 0.28 0.18 - Mercury ug/L <0.002 <0.002 <0.002 0.026 Molybdenum mg/L <0.0005 <0.0002 <0.0002 0.073 Nickel mg/L 0.0027 0.0008 <0.0005 0.118 b Selenium mg/L <0.0005 <0.0002 <0.0002 0.001 Silicon mg/L 6.2 7.7 4.5 - Silver mg/L 0.0005 0.0005 <0.0001 0.0001 Strontium mg/L 1.10 0.35 0.46 - Sulphur mg/L 160 34 27 - Thallium mg/L <0.0005 <0.0002 <0.0002 0.0008 Tin mg/L <0.0025 <0.001 <0.001 - Titanium mg/L <0.0025 <0.001 0.0011 - Uranium mg/L 0.00083 <0.0001 <0.0001 0.015 Vanadium mg/L <0.0025 <0.001 <0.001 - Zinc mg/L 0.011 0.003 <0.003 0.03

a Guideline for Aluminum is based on pH>6.5 b Guidelines are based on the minimum historical hardness of 132 mg/L as CaCO3 CCME Water quality guidelines for the protection of freshwater aquatic life, long term (updated 2013)

of 121



Muskeg River

Downstream

Muskeg River

Upstream

Stanley Creek

Upstream

CCME Guideline

10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 Dissolved Metals Aluminum mg/L <0.0075 <0.003 <0.003 - - - 0.1 a Antimony mg/L <0.0015 <0.0006 <0.0006 - - - - Arsenic mg/L <0.0005 <0.0002 <0.0002 - - - 0.005 Barium mg/L 0.11 0.13 0.12 - - - - Beryllium mg/L <0.0025 <0.001 <0.001 - - - - Boron mg/L 1.20 0.68 0.97 - - - 1.5 Cadmium ug/L 0.022 0.013 <0.005 - - - 0.042 b Chromium mg/L <0.0025 <0.001 <0.001 - - - 0.0089 Cobalt mg/L <0.00075 <0.0003 <0.0003 - - - - Copper mg/L <0.0005 <0.0002 <0.0002 - - - 0.003 b Iron mg/L <0.06 <0.06 <0.06 0.64 0.95 0.16 0.3 Lead mg/L <0.0005 <0.0002 <0.0002 - - - 0.0045 b Lithium mg/L 0.150 0.068 0.082 - - - - Manganese mg/L 0.37 0.30 0.19 0.66 0.92 0.26 - Mercury ug/L <0.002 <0.002 <0.002 - - - 0.026 Molybdenum mg/L <0.0005 <0.0002 <0.0002 - - - 0.073 Nickel mg/L 0.0023 0.00071 <0.0005 - - - 0.118 b Selenium mg/L <0.0005 <0.0002 <0.0002 - - - 0.001 Silicon mg/L 5.7 7.6 4.5 - - - - Silver mg/L <0.00025 <0.0001 <0.0001 - - - 0.0001 Strontium mg/L 1.10 0.39 0.52 - - - - Sulphur mg/L 140 31 25 - - - - Thallium mg/L <0.0005 <0.0002 <0.0002 - - - 0.0008 Tin mg/L <0.0025 <0.001 <0.001 - - - - Titanium mg/L <0.0025 <0.001 <0.001 - - - - Uranium mg/L 0.00065 <0.0001 <0.0001 - - - 0.015 Vanadium mg/L <0.0025 <0.001 <0.001 - - - - Zinc mg/L 0.008 <0.003 <0.003 - - - 0.03

of 121

Parameter Units CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

CCME Guideline

10/Dec/13 10/Dec/13 10/Dec/13 General Organics F2 (C10-C16 Hydrocarbons) mg/L <0.1 <0.1 <0.1 - F3 (C16-C34 Hydrocarbons) mg/L <0.2 <0.2 <0.2 - Naphthenic Acids mg/L 3.7 3.2 3.4 - Volatile Organic Compounds F1 (C06-C10) - BTEX Purgeable ug/L <100 <100 <100 - Benzene ug/L <0.4 <0.4 <0.4 370 Toluene ug/L <0.4 <0.4 <0.4 2 Ethylbenzene ug/L <0.4 <0.4 <0.4 90 o-Xylene ug/L <0.4 <0.4 <0.4 - m&p-Xylenes ug/L <0.8 <0.8 <0.8 - Xylenes (Total) ug/L <0.8 <0.8 <0.8 - Polycyclic Aromatic Hydrocarbons Acenaphthene ug/L <0.1 <0.1 <0.1 5.8 Acenaphthylene ug/L <0.1 <0.1 <0.1 - Acridine ug/L <0.2 <0.2 <0.2 4.4 Anthracene ug/L <0.01 <0.01 <0.01 0.012 Benzo(a)anthracene ug/L <0.0085 <0.0085 <0.0085 0.018 Benzo(b&j)fluoranthene ug/L <0.0085 <0.0085 <0.0085 - Benzo(k)fluoranthene ug/L <0.0085 <0.0085 <0.0085 - Benzo(g,h,I)perylene ug/L <0.0085 <0.0085 <0.0085 - Benzo(c)phenanthrene ug/L <0.05 <0.05 <0.05 - Benzo(a)pyrene ug/L <0.0075 <0.0075 <0.0075 0.015 Benzo(e)pyrene ug/L <0.05 <0.05 <0.05 - Chrysene ug/L <0.0085 <0.0085 <0.0085 - Dibenz(a,h)anthracene ug/L <0.0075 <0.0075 <0.0075 - Fluoranthene ug/L <0.01 <0.01 <0.01 0.04 Fluorene ug/L <0.05 <0.05 <0.05 3 Indeno(1,2,3-cd)pyrene ug/L <0.0085 <0.0085 <0.0085 - 2-Methylnaphthalene ug/L <0.1 <0.1 <0.1 - Naphthalene ug/L <0.1 <0.1 <0.1 1.1 Phenanthrene ug/L <0.05 <0.05 <0.05 0.4 Perylene ug/L <0.05 <0.05 <0.05 - Pyrene ug/L <0.02 <0.02 <0.02 0.025 Quinoline ug/L <0.2 <0.2 <0.2 3.4

of 121

Bioassay Results

Parameter Units CP

Diversion

EMSC Diversion

Inlet

EMSC Diversion

Outlet

Muskeg River

Upstream


10/Dec/13 10/Dec/13 10/Dec/13 10/Dec/13 Toxicity Ceriodaphnia dubia Chronic Bioassay LC50 % - - - >100 - Ceriodaphnia dubia Chronic Bioassay LC25 % - - - >100 - Ceriodaphnia dubia Chronic Bioassay IC50 % - - - >100 - Ceriodaphnia dubia Chronic Bioassay IC25 % - - - 36 - Fathead Minnow Chronic Bioassay LC50 % - - - >100 - Fathead Minnow Chronic Bioassay LC25 % - - - >100 - Fathead Minnow Chronic Bioassay IC50 % - - - >100 - Fathead Minnow Chronic Bioassay IC25 % - - - >100 - 96 hr Rainbow Trout acute lethality LC50 % >100 >100 >100 - - 96 hr Rainbow Trout acute lethality LC25 % >100 >100 >100 - - 96 hr Rainbow Trout Screen (% survival in 100% discharge concentration) % 100 100 100 - 100

Microtox IC50 (15 min, 15C) % - - - >91 - Microtox IC20 (15 min, 15C) % - - - >91 -

of 121

Mildred Lake Mine Comments Mildred Lake Mine was not discharging water during the month of December.

of 74

Appendix G: Surface Water Diversion Figure 2.6 Mildred Lake & Figure 2.3 Aurora

Please note that Appendix G is appended.

DP99-01

DP03-13

DP04-22

DP06-30

DP06-31

DP07-34

DP07-35DP09-37

DP09-41

DP09-48

DP09-50

DP11-58

DP11-60

DP11-61

DP11-63

DP13-64

6350

000

6351

000

6352

000

6353

000

6354

000

6355

000

6356

000

6357

000

Valley Dump

Fort Hills Dump

Moose Mountain

East M

ine

Seepa

ge C

urta

in

MSL 973220

Stanley Creek Diversion Pipeline

Inlet

Stanley CreekBeaver Pond

Outlet

Bentonite Slurry Wall

Ramp 3 Sump

MR Sump

North Seepage

Mus

keg

River

South Seepage

Aurora NorthSettling Basin

345.7masl

Pumphouse

RecyclePond

West Seepage

PlantSite

Dyke 1 North

Center Pit

Dyke 1 East

Aurora EastPit North - East

259.0maslAurora EastPit North - West263.4masl

CT Plant

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