WESA 2011 ANNUAL REPORT WASTE MANAGEMENT OTTAWA LANDFILL PREPARED FOR:

Transcription

1 WESA 2011 ANNUAL REPORT WASTE MANAGEMENT OTTAWA LANDFILL PREPARED FOR: WASTE MANAGEMENT OF CANADA CORPORATION 2301 Carp Road, R.R. # 3 Carp (Ottawa), Ontario K0A 1L0

2 FINAL REPORT 2011 ANNUAL REPORT WASTE MANAGEMENT OTTAWA LANDFILL Prepared for: WASTE MANAGEMENT OF CANADA CORPORATION 2301 Carp Rd., R. R. # 3, Carp (Ottawa), Ontario K0A IL0 Prepared by: WESA Inc Carp Rd., Box 430 Carp (Ottawa), Ontario KOA ILO Project No. B2533 March 2012 Ref: CB Annual Report-Final-March 2012.docx

3 WM Ottawa Landfill 2011 Annual Report FINAL REPORT TO: Ontario Ministry of Environment Ottawa District Office 2430 Don Reid Drive Ottawa, Ontario K1H 1E1 Attention: Mr. Steve Burns, District Manager PROVIDED BY: Waste Management of Canada Corporation 2301 Carp Road R.R. #3 Carp, Ontario K0A 1L0 Attention: Mr. Ross Wallace, Landfill Manager In providing the 2011 Annual Report for the Ottawa Landfill, Waste Management of Canada Corporation wishes to confirm that it considers some of the information contained in the report to be commercially sensitive. The release of such information could significantly prejudice the competitive position of Waste Management and interfere with the relations of Waste Management in the waste marketplace. As such, Waste Management expects that it will be contacted for its approval prior to any release of the report.

4 WM Ottawa Landfill 2011 Annual Report FINAL REPORT EXECUTIVE SUMMARY This report provides a summary and analysis of the operational activities and the environmental monitoring program at the Waste Management of Canada, Ottawa Landfill Site during the period from January 1 to December 31, The report is prepared in accordance with Condition 15.0 (Annual Reporting) of Certificate of Approval A for the Ottawa Landfill and in conformance with the Environmental Monitoring Plan approved by MOE in April Environmental Monitoring The environmental monitoring program included water quality analyses for leachate, groundwater and surface water on and around the site, as well as landfill gas monitoring across the property. The groundwater flow directions and the calculated hydraulic gradients interpreted from the 2011 monitoring program are consistent with the results obtained in previous years, with no significant changes being noted. The direction of groundwater flow in the overburden/shallow bedrock is predominantly towards the north-northeast. The predominant direction of groundwater flow in the deep bedrock unit is towards the northeast. Groundwater elevations in the overburden/shallow bedrock unit are depressed in the area along the Carp Road boundary of the site as a result of the purge well pumping system s operation. Potential groundwater impacts from the WM Ottawa Landfill are assessed using a suite of parameters known as the Assessment Parameters. Exceedances of five general water quality Assessment Parameter limits (COD, ammonia, nitrate, TKN and potassium), and five volatile organic compounds (trichloroethylene, vinyl chloride, 1,1-dichloroethane, cis-1,2-dichloroethylene and chloroethane) were observed during the 2011 reporting period in monitoring wells located downgradient from the landfill footprint. Generally, groundwater concentrations in monitoring wells downgradient of the purge well system remain stable or have decreased from peak concentrations since commissioning of the forcemain in November The extent of groundwater impacts from the landfill site remain within the boundaries of the approved CAZ. It is recommended that the monitoring frequency at wells on the CAZ and MTO properties (W48-2, W56-2 and W79), and north of the landfill at W64 return to semi-annually from quarterly, since the concentrations are stable or decreasing.

5 WM Ottawa Landfill 2011 Annual Report FINAL REPORT The surface water quality in the ditch north of Highway 417, to the east of the landfill site has shown improvements since the start of purge well system operations. Parameters that exceeded the PWQO during this reporting period included boron and iron. The drainage ditch receives runoff from the highway and potential sources other than the landfill site, which may be contributing to the observed concentrations of these and other parameters. Landfill gas monitoring in gas probes installed around the site did not detect any levels of methane concentrations. No exceedances of the trigger limit for combustible gas readings were observed in It is recommended that the landfill gas monitoring in the subsurface probes GM1 to GM8 be reduced to quarterly from monthly. Site Operations Approximately 20, tonnes of solid waste and 25, tonnes of Special Waste contaminated soil were accepted at the WM Ottawa Landfill during the period from January 1 to September 30, As of September 30, 2011, the landfill site was closed to any further disposal of waste. In 2011, a continuous water level monitoring system was installed in the purge wells and adjacent monitoring wells to improve water level monitoring capability. The volume of effluent (leachate and impacted groundwater) discharged from the site in 2011 was 256,459 cubic metres, representing a decrease of 8.9% from the previous year. The landfill gas extraction system at the landfill was expanded by adding twelve vertical wells during this reporting period. At the end of 2011, the gas extraction system included a total of 194 vertical wells on and around the existing landfill and 1700 metres of horizontal gas collector.

6 WM Ottawa Landfill 2011 Annual Report FINAL REPORT TABLE OF CONTENTS EXECUTIVE SUMMARY 1.0 INTRODUCTION ENVIRONMENTAL MONITORING METHODOLOGY PRE-SAMPLING PROCEDURES GROUNDWATER MONITORING SURFACE WATER MONITORING ANALYTICAL REQUIREMENTS LANDFILL GAS MONITORING QA/QC PROGRAM RESULTS AND DISCUSSION GROUNDWATER ELEVATIONS GROUNDWATER CHEMISTRY QA/QC Program Results Leachate Chemistry Background Groundwater Quality Groundwater Quality Guideline B7 (Reasonable Use) and Assessment Parameter Limits SURFACE WATER QUALITY MONITORING WELL STATUS AND CONDITIONS LANDFILL GAS MONITORING SITE OPERATIONS WASTE AND COVER PLACEMENT Site Plan Waste Disposal Quantities Site Volumetric Evaluation and Remaining Capacity Final Cover Placement OPERATIONAL PROCEDURES, EQUIPMENT AND FACILITIES Changes to Operations, Equipment or Facilities Landfill Inspections Complaints & Enquiries OPERATION AND PERFORMANCE OF ENGINEERED FACILITIES Purge Well System Operations & Maintenance Monitoring of Purge Well System Effectiveness Landfill Gas Extraction System Surface Emission Surveys FINANCIAL ASSURANCE UPDATE Page i

7 WM Ottawa Landfill 2011 Annual Report FINAL REPORT LIST OF TABLES Table 1: Summary of Groundwater Monitoring Program Table 2: Summary of Surface Water Monitoring Program Table 3: Water Levels Overburden/Shallow Bedrock and Surface Water Table 4: Water Level Data Deep Bedrock Table 5: Leachate Chemistry Table 6: Overburden/Shallow Bedrock Groundwater Quality (PIL, SIL) Table 7: Overburden/Shallow Bedrock Groundwater Quality (VOCs) Table 8: Assessment Parameter Limit Exceedances in Designated Groundwater Monitors Table 9: Surface Water Quality (PIL, SIL) Table 10: Surface Water Quality (VOCs) Table 11: Landfill Gas Probe Monitoring Table 12: Summary of Weekly Quantities of Waste Received, January to December 2011 LIST OF FIGURES Figure 1: Site Location Map Figure 2: Site Plan and Monitoring Locations Figure 3: Groundwater Elevations, Overburden-Shallow Bedrock (April 2011) Figure 4: Groundwater Elevations, Deep Bedrock (April 2011) Figure 5: Assessment Parameter Concentrations Spring 2011 Figure 6: Detailed Site Plan and Topography LIST OF APPENDICES Appendix A: Monitoring and Screening Checklist Appendix B: Concentration - Time Trends at Selected South CAZ & MTO Monitoring Wells Appendix C: Concentration Time Trends at Selected North CAZ Monitoring Wells Appendix D: Concentration Time Trends at Monitoring Well W64 Appendix E: Summary of Purge Well Maintenance Activities Appendix F: Borehole Logs, Replacement Monitoring Wells W92 and W93 Appendix G: Purge Well Water Level Monitoring, January to December 2011 Page ii

8 WM Ottawa Landfill 2011 Annual Report FINAL REPORT 1.0 INTRODUCTION This report provides a summary and analysis of environmental monitoring and operational activities at the Waste Management of Canada (WM) Ottawa Landfill site during the 2011 reporting period (January 1 to December 31). The report is prepared in accordance with Condition 15.0 of Certificate of Approval A for the landfill site, issued on September 8, The scope and rationale of the environmental monitoring program are described in the Environmental Monitoring Plan (EMP), which was approved by the MOE in April The current EMP represents an update of the previous version approved in Modifications were made to the monitoring program to reflect the addition of a Contaminant Attenuation Zone (CAZ) to the landfill site. In October 2008, a subsequent amendment was made to the EMP to include four groundwater monitoring locations east of Carp Road in the monitoring program. In March 2011, additional CAZ properties were approved by the MOE (refer to Amended Certificate of Approval No. A461002, dated March 25, 2011). The approval incorporated additional groundwater and surface water monitoring locations on the new CAZ properties. The methodology and results of the water quality monitoring program are presented in Sections 2.0 and 3.0, respectively. A summary of the site operations and performance of engineered facilities are presented in Section 4.0. The intent of this report is to be consistent with the general requirements of the Ontario Ministry of Environment document entitled Monitoring and Reporting for Waste Disposal Sites, Groundwater and Surface Water: Technical Guidance Document, November 2010, referred to as the WDS Technical Guidance. WESA endeavours to collect and include all the information covered in the WDS Technical Guidance, to the extent possible and where applicable. The Monitoring and Screening Checklist from the WDS Technical Guidance has been completed and is included as Appendix A of this Annual Report. The WM Ottawa Landfill is comprised of a 35 hectare landfill area within a hectare landfill site located on Lots 3 and 4, Concessions II and III of the former Township of West Carleton (Geographic Township of Huntley) in the City of Ottawa, Ontario (see Figure 1). The landfill site layout, including all of the 2011 monitoring locations, is shown on Figure 2. Note that the topographic contours and features shown on Figure 2 reflect the conditions on the landfill site and surrounding area established from digital mapping based on a flyover on June 29, Topographic contours and features of the landfill site from June 2010 are presented on Figure 6 (see discussion in Section 4.0, Site Operations). A final survey of the as-built landfill contours and gas collection works is to be completed in the first quarter of 2012, following construction of gas wells and horizontal collectors. Page 1

9 WM Ottawa Landfill 2011 Annual Report FINAL REPORT 2.0 ENVIRONMENTAL MONITORING METHODOLOGY The 2011 environmental monitoring programs were all completed in accordance with the approved EMP. All of the monitoring and sampling activities were completed by trained WESA personnel experienced in WM and standard industry protocols and quality assurance techniques. 2.1 PRE-SAMPLING PROCEDURES Prior to the start of each sampling event, the following procedures were completed: Sample bottles were ordered and sample sets were checked and labelled; Sufficient extra sample sets were included to cover QA/QC sampling requirements; Sample bottle preservative requirements were checked; Instruments used to measure field parameters were checked and calibrated (instrument calibrations and/or checks were performed on a regular basis and records of calibration are kept on file); Field information forms were populated with sampling location data and checked to ensure completeness. All sampling team members provided written verification of their knowledge of, and commitment to WM procedures, protocols and quality assurance techniques. 2.2 GROUNDWATER MONITORING Groundwater monitoring locations in the vicinity of the Ottawa Landfill site are divided into the following three categories: P series monitors - screened above bedrock (in the overburden layer); W series monitors - screened within the bedrock unit or across the overburden-bedrock interface; PW series monitors - either screened across the overburden-bedrock interface or within shallow fractured bedrock (the PW designation indicates that these wells are part of the purge well system). Water Levels All water level measurements were obtained using an electronic water level tape that was decontaminated prior to use at each location. Water level measurements are referenced to the top Page 2

10 WM Ottawa Landfill 2011 Annual Report FINAL REPORT of the well casing at each monitoring well location. Surface water elevations are referenced to staff gauges or are surveyed using a levelling instrument. A complete set of water level data, including all operational monitoring wells located on and around the Ottawa Landfill site was collected on April 27, Groundwater and surface water elevation data are plotted on Figures 3 and 4 for the overburden/shallow bedrock and deep bedrock units, respectively. Water levels are also collected on a monthly basis at 33 selected monitoring wells and surface water locations to assess the effectiveness of the purge well system. Well Purging All P and W series monitoring wells were purged and sampled using dedicated positive displacement foot valve pumps and polyethylene tubing. Well purging methodology was based on previous knowledge of the yield of each monitoring well as discussed below: Flow cell techniques were used for high yield wells that could provide sufficient water for continual pumping. At these locations, purging continued until the ph, temperature and conductivity had stabilized (using a multi-meter/flow cell). All readings were recorded on WM field information forms. Low yield monitoring wells were pumped until at least one borehole volume had been removed by pumping the water level down to the top of the screen and then allowing the well to recover until additional water could be removed. Field parameters were obtained from the available purge water. The PW series purge wells are continuously pumping and the flow from each well can be sampled from individual sampling ports located at the well heads. Groundwater Field Parameters Field parameters were measured at each groundwater monitoring location with sufficient water using a YSI model 556 MPS multi-meter. The instrument was calibrated and/or checked on a daily basis for ph, conductivity and dissolved oxygen (DO). As discussed above, all records of calibration are kept on file. Irrespective of the yield characteristics of each well, an attempt was made at each location to collect basic field parameters (ph, temperature and conductivity). Note that field readings are not collected from the PW series purge wells since the groundwater is known to be impacted and the chemical characteristics could be damaging to the monitoring equipment. Page 3

11 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Field parameters and other site-specific information were recorded on WM field information forms at the time of data collection. Field information forms were collated, checked and filed according to WM quality assurance procedures. Any deviations from WM approved methodology and protocols were documented on the field information forms along with a rationale explaining the deviation and all subsequent actions taken. Groundwater Sampling All groundwater samples were collected in accordance with WM and standard industry protocols. Samples were collected in new laboratory-provided sample containers. Upon collection, samples were placed immediately into a cooler with ice. All samples were delivered to Maxxam Analytics Inc. in Ottawa, Ontario for analysis under strict chain of custody procedures. Holding times for all samples conformed to laboratory defined requirements. Analytical requirements were all crossreferenced to the current WM/Maxxam laboratory master list. Details of the groundwater monitoring program, including locations, frequency and analytical requirements, are presented in Table 1. Monitoring well locations are indicated on Figure SURFACE WATER MONITORING All surface water samples were collected in accordance with WM and standard industry protocols. Upon collection, samples were placed immediately into a cooler with ice. All samples were delivered to Maxxam Analytics Inc. in Ottawa, Ontario for analysis under strict chain of custody procedures. Holding times for all samples conformed to laboratory defined requirements. Analytical requirements were all cross-referenced to the current WM/Maxxam laboratory master list. Details of the surface water monitoring program, including locations, frequency and analytical requirements, are presented in Table 2. Surface water monitoring locations are indicated on Figure 2. Surface Water Field Parameters Field parameters were measured at each surface water location using a YSI model 556 MPS multimeter. Calibration procedures were all completed according to WM protocols. Page 4

12 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Field measurements of ph, temperature, conductivity and dissolved oxygen were taken from the surface water bodies at the time of sample collection. Estimates of surface water flow were recorded, where possible. Field parameters and other site-specific information were recorded on WM field information forms at the time of data collection. Field information forms were collated, checked and filed according to WM quality assurance procedures. 2.4 ANALYTICAL REQUIREMENTS All groundwater samples were analyzed for the site-specific parameter list as specified in the Environmental Monitoring Program: Primary Indicator List (PIL) - Assessment Parameters Secondary Indicator List (SIL) Ammonia (total) Alkalinity Conductivity Boron ph Cyanide (free) Chemical oxygen demand Hardness Dissolved organic carbon Nitrate Nitrite Total dissolved solids Barium Iron Magnesium Potassium Calcium Manganese Total kjeldahl nitrogen Cadmium Sodium Chloride Sulphate Chromium (total) Lead In addition, groundwater samples from W44-3, W48-2, W51-2, W51-3, W52-2, W53-1, W53-2, W54-2, W56-2, W72, W79, W80, W81, W82, W84, W85 and WS2 were analyzed for the following volatile organic compounds (VOCs): Page 5

13 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Volatile Organic Compound (VOC) List Primary Indicator List (PIL) Assessment Parameters Secondary Indicator List (SIL) Benzene Bromodichloromethane Cis-1,3-Dichloropropylene Trichloroethylene Bromoform Trans-1,3-Dichloropropylene Vinyl chloride Bromomethane Ethylbenzene Chlorobenzene Carbon tetrachloride Styrene 1,4-Dichlorobenzene Chloroform 1,1,2,2-Tetrachloroethane 1,1-Dichloroethane Chloromethane 1,1,1,2-Tetrachloroethane Chloroethane Dibromochloromethane Tetrachloroethylene Cis-1,2-Dichloroethylene 1,2-Dibromoethane Toluene 1,2-Dichlorobenzene 1,1,1-Trichloroethane 1,3-Dichlorobenzene 1,1,2-Trichloroethane 1,2-Dichloroethane Trichlorofluoromethane 1,1-Dichloroethylene 1,3,5-Trimethylbenzene Trans-1,2-Dichloroethylene m&p-xylene 1,2-Dichloropropane o-xylene Methylene chloride Surface water samples were analyzed for the list of parameters included in the Primary and Secondary Indicator Lists (PIL and SIL). Samples collected in the Spring of 2011 from locations S1 and S3 in the Highway 417 ditch were analyzed for VOCs. Samples that are representative of leachate quality at the WM Ottawa Landfill were collected at the discharge from pumping station No. 3 at the GDT treatment building. This leachate is generated within the lined areas of the landfill. A leachate sample was also collected from purge well PW8 (drilled through waste at the downgradient end of the closed south cell). This leachate is representative of older waste disposed in the south cell. The leachate samples were collected twice in 2011 (Spring and Fall), and analyzed for the list of Primary (PIL), Secondary (SIL) and VOC parameters specified in the EMP. 2.5 LANDFILL GAS MONITORING Landfill gas was monitored by WM personnel using a hand-held multi-gas monitoring instrument (Landtec GEM2000 Landfill Gas Analyzer). Readings were collected from eight on-site gas monitoring wells (GM1 to GM8) during each monitoring event. Gas monitoring locations are shown on Figure 2. Note that the gas monitoring program in the EMP is in addition to monitoring completed for the landfill gas extraction and recovery system installed at the site. Page 6

14 WM Ottawa Landfill 2011 Annual Report FINAL REPORT 2.6 QA/QC PROGRAM A comprehensive quality assurance/quality control (QA/QC) program was implemented in accordance with WM requirements. Requisite numbers of blind field duplicates, trip blanks, field blanks and equipment blanks were collected and submitted for analysis during each sampling program according to WM protocols. Analytical data from the 2011 sampling programs were checked and verified according to the requirements of the WM monitoring and reporting QA/QC evaluation checklist, as detailed below: Field information sheets were checked for completeness; Chain of custody forms were checked for accuracy and completeness; All hard copies, including instrument calibration forms, field information sheets and chain of custody forms, were filed for future reference if required; Analytical data were checked to ensure all required analyses were performed; Analytical results for each parameter were compared to available historical data for each sample interval using SiteFX software; Duplicate samples were compared against their corresponding regular sample counterpart using SiteFX and Excel software; Field blank samples were checked to ensure there were no detections; Data Quality Review (DQR) requests were submitted to Maxxam if duplicate sample analytical results were outside of WM s established limits for variance; DQR requests were submitted to Maxxam if individual analytical results were outside of WM s established limits for variance with respect to available historical data; and, DQR requests were submitted to Maxxam if detections were identified in any field blank or trip blank samples. QA/QC program findings are presented in Section below. 3.0 RESULTS AND DISCUSSION The figures and tables referenced in the following sections are all located at the end of the report text. Results are presented and compared with historical data and MOE criteria where applicable. Information on the site physiography, hydrogeology and surface hydrology has previously been documented and will not be repeated herein. Page 7

15 WM Ottawa Landfill 2011 Annual Report FINAL REPORT 3.1 GROUNDWATER ELEVATIONS Water level data collected during the annual monitoring event on April 27, 2011 are presented in Tables 3 and 4 for overburden/shallow bedrock and deep bedrock monitoring wells, respectively. Groundwater and surface water elevation data are plotted on Figure 3 for the overburden/shallow bedrock zone, and on Figure 4 for the deep bedrock zone. In general, the directions of groundwater flow interpreted for the overburden/shallow bedrock and for the deep bedrock are consistent with previous findings. It is noted that Figures 3 and 4 include additional groundwater elevations from data that was collected as part of the West Carleton Environmental Centre Environmental Assessment (eg., W88-2, W89-2, W90-2, W91-2, etc.). Overburden/Shallow Bedrock The groundwater contours shown on Figure 3 were developed from the annual Spring site-wide water level monitoring event, as per the EMP. As shown on the figure, the 2011 water level data indicate that across the majority of the landfill site, the direction of groundwater flow within the overburden/shallow bedrock aquifer is towards the north-northeast, with an average gradient of approximately Larger hydraulic gradients are observed along the eastern boundary of the site and onto the CAZ where the gradient is approximately to Groundwater elevation data in the vicinity of the Carp Road site boundary reflects the influence of the purge well capture system. Groundwater elevations are generally depressed in the purge wells relative to adjacent monitoring wells, indicating that a zone of capture is established along the Carp Road property boundary. The water levels in the vicinity of the purge well system are measured monthly (see discussion in Section 4.3 and monitoring results in Appendix E). Deep Bedrock The potentiometric elevations measured in deep bedrock monitoring wells during the 2011 annual monitoring event are shown on Figure 4. Groundwater flow in the deep bedrock is interpreted to be controlled by isolated fracture zones, which do not appear to be well-connected hydraulically based on the variable hydraulic heads observed across the site. The 2011 data show that hydraulic heads in the deep bedrock are variable across the site and the nearby properties, ranging from 92.7 to metres above sea level (masl). For this reason, groundwater elevations have not been contoured (ie., the deep bedrock zone appears to be discontinuous). Upgradient and along the western boundary of the site, where the bedrock is found at shallower depths, the hydraulic heads in the deep bedrock zone are all greater than 120 masl and are generally consistent with those in the overburden/shallow bedrock zone. This indicates that Page 8

16 WM Ottawa Landfill 2011 Annual Report FINAL REPORT there may be more hydraulic connectivity between the shallow and deep bedrock in this area. Further to the east, the hydraulic heads in the deep bedrock range between 92.5 and masl, and are generally not consistent with the shallow bedrock, indicating less vertical and horizontal connectivity. Overall, groundwater flow in the deep bedrock appears to be controlled by the regional groundwater flow system, oriented toward the Carp River. No significant changes in the deep bedrock groundwater flow direction were noted relative to monitoring programs conducted in previous years. 3.2 GROUNDWATER CHEMISTRY QA/QC Program Results In 2011, the sampling and analytical quality assurance/quality control program for groundwater monitoring included field duplicate samples, trip blanks, and field blanks. Historical Screening A total of 23 individual parameter concentration results from the Spring 2011 monitoring event and 9 parameter results from the Fall 2011 monitoring event were identified as possible outliers when compared to historical concentration ranges (the values were more than 20% above or below the historical maxima or minima, respectively; and the historical data sets were sufficient to be considered statistically significant, i.e., at monitors where the parameters in question had been analyzed ten times or more). The data were reviewed within the context of sample location, parameter concentrations, method detection limits and recent concentration trends. Based on this review, the outlying data were all interpreted to be due to recent concentration trends, with the exception of the Spring 2011 results for calcium, magnesium, potassium and sodium at SG-M3, which appear to be anomalous (eg., calcium, magnesium and potassium were reportedly not detected in the sample). Although the Spring 2011 results for SG-M3 were re-confirmed by the lab, the Fall 2011 results returned to within the historical ranges. Overall, the 2011 monitoring results were consistent with the historical data set for the site. Once the data sets for new wells and parameters that were added to the updated EMP increase to include sufficient information, historical screening will be performed on subsequent results. Blind Field Duplicates Field duplicate samples were also closely scrutinized to identify parameters potentially exceeding WM s acceptable variability range. No discrepancies of any significance were noted in the 2011 results. A minor discrepancy was the following: Page 9

17 WM Ottawa Landfill 2011 Annual Report FINAL REPORT S3: Boron reported as 0.20 mg/l in the regular sample; and 0.16 mg/l in the duplicate for Spring Field Blanks The results for most field blank sample parameters were below detection limits. A total of thirty low level detections were identified (alkalinity, conductivity, major ions, chemical oxygen demand, chloroform, and dissolved organic carbon). None of these low level detections indicated any significant potential concerns with the analytical results. DOC Filter Blanks The dissolved organic carbon results from the filter blank samples ranged from 0.6 to 2.4 mg/l in the spring results and from 0.6 to 0.9 mg/l in the fall results. None of these detections presented any potential concerns with the interpretation of the analytical results. Trip Blanks The results for the VOC trip blank samples indicated low level detections for chloroform (0.6 to 0.7 μg/l) indicating an analytical bias at the laboratory. One detection of bromodichloromethane at the detection limit was also noted (0.1 μg/l). Equipment Blanks All sampling equipment used during the 2011 monitoring events were dedicated, so no nondedicated sampling equipment (ie. down-hole pumps or peristaltic pumps) was used to sample any wells. Consequently, no equipment blanks were required. QA/QC Summary Overall, the QA/QC sample results reflect the suitability of field methods and sample handling procedures used in the monitoring program. The variances noted above do not affect any of the interpretations made in this report. Other elements of the QA/QC program (i.e., checking of documentation and results for variant data) were successful in that a small number of minor errors and omissions were positively identified, and were subject to corrective actions. The resultant data set can therefore be relied on, in terms of overall accuracy and repeatability. Page 10

18 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Leachate Chemistry A summary of the leachate chemistry monitored at the WM Ottawa Landfill is presented in Table 5. Leachate from the waste disposal areas at the landfill is characterized by elevated concentrations of major ions (sodium, potassium, chloride), metals (iron and boron), nitrogen compounds and other constituents such as COD, DOC, conductivity and alkalinity. In order to assess potential downgradient groundwater impacts from the landfill, the following parameters are used: Leachate Assessment Parameters boron chemical oxygen demand (COD) dissolved organic carbon (DOC) potassium ammonia total kjeldahl nitrogen (TKN) VOCs have been detected at low concentrations in the leachate and in wells immediately downgradient of the unlined disposal areas at the site. VOCs that are generally detected in leachate include: benzene ethylbenzene toluene xylenes chlorobenzene 1,2-dichlorobenzene (o) 1,4-dichlorobenzene (p) cis-1,2-dichloroethylene 1,1-dichloroethane chloroethane In 2011, leachate was monitored at PW8 (downgradient of the closed south cell, drilled through waste materials) and at the discharge from Pumping Station No. 3 (P3) in the GDT Building (leachate from lined cells). The results for the 2011 leachate chemistry monitoring are presented in Table 5. Concentrations of the leachate indicators remain elevated at the leachate monitoring locations. Page 11

19 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Background Groundwater Quality Background groundwater quality in the overburden/shallow bedrock zone is monitored at three locations: W57-2, W70 and W77-2 The 2011 results for these monitors are included on Table 6. The results for the background monitors indicate relatively low concentrations of water quality parameters, and are generally consistent with previous results Groundwater Quality Groundwater quality analytical results for samples collected from the overburden-shallow bedrock monitoring wells are presented in Table 6 (PIL and SIL parameters) and Table 7 (VOCs). Historical data from 2000 onwards are also shown in the tables. Results from dates prior to 2000 are available in the 2007 Annual Report. The following discussion is divided into three areas: on-site, western and northern boundaries, and eastern boundary/downgradient. The locations of the monitoring wells are shown on Figure 2, and the results for the water quality assessment parameters for the WM Ottawa Landfill are shown on Figure 5. On-site Groundwater Quality, Active Waste Disposal Area Groundwater quality is monitored on-site at the following locations adjacent to the northern unlined footprint: P79, P80-1 and W63 The concentrations of leachate indicator parameters at P79, immediately adjacent to the unlined landfill, gradually increased from 2000 to 2008, and have generally stabilized since that time. The concentrations of most parameters observed in 2011 are similar to or slightly lower than the 2008 and 2009 levels. The ammonia concentration continues to increase at P79. At P80-1, located to the west, the concentrations have remained stable or have increased slightly since 2000 (eg., alkalinity, manganese, sodium, conductivity). Chloride concentrations have decreased since Monitoring well W63 is located in the former Dibblee Pit area, north of the unlined landfill and east of the stormwater recharge pond. The concentrations of most dissolved parameters at this location have increased since 2004; the 2011 results continue to show increasing concentrations. It is noted that the concentrations of several water quality parameters continue to be higher at W63 than at locations closer to the landfill footprint (eg., alkalinity, ammonia, barium, chloride, hardness, Page 12

20 WM Ottawa Landfill 2011 Annual Report FINAL REPORT sodium, TDS, etc.). This indicates that the source of the elevated concentrations at W63 may be due to other factors, such as the stormwater recharge pond or the former biosolids storage in this area. Western and Northern Boundaries Groundwater quality in the overburden/shallow bedrock zone along the western and northern boundaries of the site is measured at the following locations: Western boundary W60-2, W61 Northern boundary W62-2, W64 Monitoring well W60-2 is located in the northwest corner of WM property, and W61 is located at the northwest corner of the landfill footprint. Relatively low concentrations of dissolved solids, consistent with background concentrations were observed in these monitors along the western boundary of the site in Monitoring wells W62-2 and W64 are located from west to east, respectively, along the central portion of the northern boundary of WM property. The 2011 concentrations of dissolved parameters at W62-2 generally reflect background groundwater conditions. Monitor W64 is situated at the downgradient end of an area of ponded water that collects runoff from a swale that originates at the northwest corner of the landfill footprint. The 2011 concentrations of indicator parameters at W64 remained below the peak 2008 and 2009 results, and were generally consistent with the original 2004 levels. The nitrate concentration continues to be elevated relative to 2004 results. Eastern Boundary and Downgradient Groundwater quality in the overburden/shallow bedrock zone on the downgradient side of the landfill is represented by the following monitoring well locations: Purge wells PW1 to PW10, and PW20 On-site along eastern boundary W65-2, W72, W80 and W81 CAZ properties (east of Carp Road) W44-3, W53-1, W53-2, W54-2, W55-2, W56-2, W79, W82, W84, W85 and WS2 CAZ property (southeast of Highway 417-Carp Road interchange) W51-2, W51-3, W52-2 MTO property (Highway 417) W48-2 Page 13

21 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Concentrations of dissolved parameters observed in samples collected from the purge wells (denoted as PW) represent leachate-impacted groundwater that is being pumped from the subsurface and removed along the downgradient boundary of the landfill site. As expected, the concentrations of leachate indicator parameters (PIL and SIL) are generally higher in the purge wells than in the downgradient monitoring wells. Along the alignment of the purge well system, the highest concentrations are generally observed around the closed south cell (PW7 and PW8), with lower concentrations at the northern (PW1 and PW2) and southern (PW9 and PW10) ends of the system. The monitoring wells located in the northeast corner of WM property (W65-2 and W72) have been sampled since The concentrations of indicator parameters remain at relatively low levels and do not show evidence of leachate impacts. Monitoring wells W80 and W81, installed in 2008, are located immediately downgradient of the purge well system on WM property, and are within the hydraulic influence of the system. The concentrations of the leachate indicator parameters are elevated at these monitors relative to background conditions, as is expected. The concentrations are generally less than the purge wells to the immediate west (PW1, PW2, PW3 and PW4). In 2011, MOE approved WM s application to designate 20.4 hectares of land east of Carp Road as a CAZ. The new CAZ area is located north of the hectares of land that was established as a CAZ in Six groundwater monitors are located on the north portion of the CAZ (approved in 2011): W53-1, W53-2, W54-2, W82, W85 and WS2. The concentrations of the water quality parameters have generally remained stable since installation of these monitors. A slight increase in conductivity, chloride and COD has been noted at W53-1, W53-2 and W54-2. Ammonia and TKN have increased at WS2. WS2 is a former water supply well for non-potable uses at the aggregate production plant. In September 2011, the well was replaced with a holding tank system with water being imported by tanker truck. The southern portion of the CAZ property is monitored at five locations (listed from north to south): W79, W84, W44-3, W55-2 and W56-2. Monitors W79 and W56-2 were sampled quarterly in 2011, as per the recommendations from the 2010 Annual Report. Monitors W44-3, W55-2 and W84 were sampled twice in 2011 (spring and fall). The concentrations of water quality parameters remain stable at W44-3. At W79, the concentrations of some leachate indicators (eg., ammonia, potassium, COD) are higher than when it was first installed; however, they have remained stable since The concentrations of other parameters such as sodium, chloride, calcium and TDS, remain higher at W79 relative to those observed in groundwater upgradient (eg., Page 14

22 WM Ottawa Landfill 2011 Annual Report FINAL REPORT PW4, PW5, PW6, PW7, W81 and W84). Hence, the concentrations of these parameters are indicative of a secondary source, such as the storage of road salt and/or dust control products on the CAZ property. Much lower concentrations of these parameters are seen at W44-3, W55-2 and W56-2, further to the east and south on the CAZ property. Discussion of the observed concentrations in relation to the Assessment Limits is presented in the following section. Monitoring well W48-2, located on MTO property north of Highway 417, shows elevated concentrations of leachate indicator parameters, specifically ammonia, TKN, COD and potassium. The 2011 concentrations remain within the historical ranges observed since implementation of the purge well system, down from peak concentrations. The concentrations in the spring are typically less than those seen in fall, which is consistent with the seasonal trends observed historically at this monitor location. A CAZ property located southeast of the Highway 417-Carp Road interchange was approved by MOE in Three groundwater monitoring points are located on the property: W51-2, W51-3 and W52-2. The 2011 results are included in Table 6. Slightly elevated concentrations of ammonia, TKN, potassium, chloride, sodium and iron are observed in the 2011 results. Further monitoring will be required to determine whether any trends are apparent in the water quality on the Southeast CAZ. The following monitoring wells were sampled in May 2011 for volatile organic compounds (VOCs): W44-3 W48-2 W51-2 W51-3 W52-2 W53-1 W53-2 W54-2 W55-2 W56-2 W72 W79 W80 W81 W82 W84 W85 WS2 The results for the VOC groundwater monitoring are presented in Table 7. The concentrations of VOCs that are listed as Assessment Parameters are shown on Figure 5 for these locations. The low levels of VOCs observed in 2011 (chlorinated aliphatic hydrocarbons, chlorobenzenes and BTEX parameters) are consistent with previous monitoring results in terms of locations, constituents and concentrations. No VOCs were detected in samples from the CAZ property southeast of the landfill (W51-2, W51-3, W52-2), or in the vicinity of the aggregate washponds on the CAZ east of Carp Road (W55-2, W56-2). Page 15

23 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Guideline B7 (Reasonable Use) and Assessment Parameter Limits Potential groundwater impacts from the WM Ottawa Landfill are assessed using a suite of parameters denoted Assessment Parameters, as agreed to with the Ontario Ministry of Environment. These parameters include nitrogen compounds (ammonia, TKN, nitrate and nitrite), potassium, COD, boron, and selected VOCs. The Assessment Parameters have low and relatively uniform background concentrations, elevated concentrations in the leachate, and no other apparent significant sources that affect groundwater concentrations at the monitoring locations. A summary of the parameters that are used to assess groundwater conditions downgradient from the WM Ottawa Landfill are presented below: Assessment Parameters with Reasonable Use Limits (mg/l) Assessment Parameters with Prediction Limits (mg/l) Boron 1.29 Ammonia 1.09 Nitrate (as N) 2.58 TKN 0.76 Nitrite (as N) 0.33 COD 52 Benzene Potassium 3 Trichloroethylene ,1-Dichloroethane Vinyl chloride Chloroethane Chlorobenzene Cis-1,2-Dichloroethene ,4-Dichlorobenzene The locations and concentrations of parameters that were higher than these limits in downgradient monitoring wells sampled as part of the Environmental Monitoring Program in 2011 are listed in Table 8. These locations are divided into three areas: Northern boundary, the CAZ properties (North, South, and Southeast), and the MTO property. Monitoring wells on the South CAZ (W44-3, W55-2, W56-2, W79 and W84), the MTO property (W48-2), and the Southeast CAZ (W51-2, W51-3 and W52-2) do not exceed the Reasonable Use Limits (RUL) for any leachate indicators. Exceedances of statistical prediction limits are noted for ammonia, TKN, potassium, COD and cis-1,2-dichloroethylene (W44-3 and W79 only). It should be noted that these parameters do not have any health or aesthetic-related standards specified in the Ontario Drinking Water Standards, Objectives and Guidelines. Plots of the concentrations of selected leachate indicator parameters (ammonia, nitrate, TKN, COD, potassium and boron) versus time for monitoring wells on the South CAZ and MTO properties are presented in Appendix B. From the plots, it is seen that the concentrations at W44-3 and W55-2 have remained stable over time. At W56-2, the concentrations increased from 2004 to 2008, but Page 16

24 WM Ottawa Landfill 2011 Annual Report FINAL REPORT have remained stable since At monitoring well W48-2 on the MTO property, concentrations generally follow a decreasing trend with distinct, recurring seasonal variation. Concentrations of some parameters (ammonia, TKN and COD) initially increased at W79, but have remained stable since Other elevated parameter concentrations (sodium, chloride, conductivity) are not related to the landfill, as noted above in Section Across the South CAZ, leachate indicator concentrations decrease with distance from the landfill. For example, concentrations of such parameters as ammonia, TKN, potassium and COD are much higher closer to the source (PW4 to PW7) relative to W84. These concentrations decrease further at W79, W44-3, W55-2 and W56-2. These latter monitoring wells are located 200 metres or more from the downgradient boundary of the CAZ. Monitoring wells W53-1, W53-2, W54-2, W82, W85 and WS2 are located on the North CAZ. At these monitors, RUL exceedances were noted for the following parameters: Nitrate (W85 and W54-2 fall); Trichloroethylene (W54-2, W85 and WS2); and Vinyl chloride (W53-1). Other parameters that exceed the statistical prediction limits include ammonia (WS2 only), TKN, potassium, chloroethane (WS2 only), 1,1-dichloroethane and cis-1,2-dichloroethylene. Timeconcentration plots for VOC indicators at these monitoring wells are presented in Appendix C. The VOC indicators continue to exhibit stable or decreasing concentrations with time. Along the northern boundary of the landfill site, one RUL exceedance for nitrate was observed at W64. Exceedances of the statistical prediction limits for ammonia, TKN and potassium were observed at W64 and for TKN at W65-2. Trend plots of concentrations of several water quality indicators over time at W64 are presented in Appendix D. With the exception of nitrate and potassium, the observed concentrations at W64 are much lower than those seen in 2008 and The water quality at this location appears to be influenced by recharge from the pond immediately upgradient, and does not appear to be impacted by leachate from the landfill footprint. Four groundwater monitoring locations have been sampled quarterly over the past two years (W48-2, W56-2, W64 and W79). With the observed stable or decreasing concentration trends at the monitoring locations, and since the landfill was closed in 2011, it is recommended that the monitoring frequency return to twice-annually at these locations beginning in Page 17

25 WM Ottawa Landfill 2011 Annual Report FINAL REPORT 3.3 SURFACE WATER QUALITY The analytical results from the 2011 surface water sampling programs are presented in Tables 9 and 10. The sampling locations are shown on Figure 2, and the results for the leachate indicators are shown on Figure 5. The surface water Assessment Parameters and Limits for the WM Ottawa Landfill are as follows (as per the approved EMP): Assessment Parameter Assessment Limits (mg/l) Primary Indicators (PIL) Un-ionized Ammonia 0.02 Boron 0.2 Benzene Trichloroethylene ,2-Dichloroethylene (cis & trans) Vinyl chloride ,1-Dichloroethane Chlorobenzene ,4-Dichlorobenzene Off-site surface water quality is monitored at three locations along the ditch north of Highway 417. These locations are denoted as S1, S3 and S10, and are shown on Figure 2. Surface water quality is also monitored on the Southeast CAZ at locations SG-M1 and SG-M3 (see Figure 2). The 2011 results for the highway ditch locations are consistent with previous years. The primary leachate indicators (ammonia, TKN, potassium, COD, etc.) are generally found at the lower limit of their historical ranges. A comparison of the 2011 water quality results to the Assessment Limits shows that exceedences were only found for boron at S1: S1 All units in mg/l Boron Limit May Nov Iron continued to exceed the PWQO at S1, S3 and S10. However, iron is not an Assessment Parameter for the WM Ottawa Landfill. The presence of iron-stained sediment and suspended material at S1 and S3 may influence the iron concentrations observed in these samples. There were no VOCs detected in the surface water samples collected in Page 18

26 WM Ottawa Landfill 2011 Annual Report FINAL REPORT The Southeast CAZ was approved in 2011, and surface water monitoring locations SG-M1 and SG- M3 were added to the EMP. The 2011 monitoring results are found in Table 9. Concentrations of water quality parameters are generally higher upstream at SG-M1 (the discharge spring) compared to downstream, where the surface pond discharges from the CAZ (SG-M3). The only exceedances of the Assessment Limits in 2011 were for boron: Boron Limit 0.20 SG-M1 04-May Nov SG-M3 08-Nov All units in mg/l 3.4 MONITORING WELL STATUS AND CONDITIONS During the various monitoring events conducted throughout the year, the conditions of monitoring wells were inspected. Any repairs, such as new locks, labels or well caps, etc. were made as necessary. Watertight casings and seals remain in place at all monitors to ensure that surface water or foreign materials do not infiltrate the wells. The monitoring wells comply with the applicable sections of Ontario Regulation 903 relevant to test holes as defined in the regulation, as well as the overall intent of the regulation to protect groundwater supplies. With the exception of P31 (inactive) and P32 (abandoned) as described further in Section 4.3.1, all of the monitoring wells included in the EMP are currently active. It is not expected that any of the wells will require alteration or decommissioning within the next reporting period. 3.5 LANDFILL GAS MONITORING Eight gas monitoring probes (GM1 GM8) are installed at locations between the landfill area and buildings, and along the eastern boundary of the landfill site. During the 2011 monitoring year, gas measurements were collected by WM personnel using a hand-held multi-gas detector. The 2011 monitoring results are presented in Table 11. In 2011, no concentrations of methane were detected in the landfill gas probes. Consequently, none of the 2011 readings exceeded the trigger level of 50% LEL for further landfill gas evaluation. With the closure of the landfill site on September 30, 2011 and the continued operation and monitoring of the landfill gas extraction system, it is recommended that the frequency of the perimeter landfill gas monitoring program in the EMP be reduced from monthly to once-quarterly. Page 19

27 WM Ottawa Landfill 2011 Annual Report FINAL REPORT 4.0 SITE OPERATIONS In the following sections of this report, a summary of the site operations and engineered facilities for the period covering January 1 to December 31, 2011 is presented in accordance with Condition 15.2 of Certificate of Approval No. A Included in the summary are such issues as waste and cover placement, waste quantities, operational procedures, landfill gas management, construction of additional facilities, and an estimate of remaining site capacity. Responses to public enquiries and/or complaints are also documented. 4.1 WASTE AND COVER PLACEMENT Site Plan A site plan illustrating the areas of waste placement, site facilities, and topographic features is presented on Figure 6. The site plan is based on an aerial topographic survey completed in June A topographic survey of as-built final contours is to be completed in the first quarter of The active disposal areas of the landfill site during this reporting period included the top of the waste mound and the north and south sideslopes, as illustrated on Figure 6. The waste disposed on the sideslopes was to fill in depressions resulting from the settlement of decomposed waste. The previously-placed cover soil was stripped from the area, additional waste was placed and compacted, and final cover was then re-applied over the waste. On September 30, 2011, in accordance with Condition 16.1 of Certificate of Approval No. A461002, the landfill site was closed to any further disposal of waste Waste Disposal Quantities The Certificate of Approval for the WM Ottawa Landfill was amended on September 8, The amended Certificate requires that the Annual Report provide a summary of the weekly, maximum daily and total annual quantity of waste (in tonnes) received at the site (Condition 15.2.xiii). A weekly summary of the municipal solid waste disposed at the landfill and Special Waste (hydrocarbon-impacted soil) used as cover material during this reporting period is presented in Table 12. The total quantity of municipal solid waste landfilled at the site from January to September 30, 2011 (closure date) was 20, tonnes. A total of 25, tonnes of Special Waste cover soil was also received during that period. Based on site records, the maximum daily amount of municipal solid waste received for disposal at the site was tonnes on May 10, The maximum daily amount of Special Waste to be used as cover material was 1, tonnes, received on July 26, Page 20

28 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Site Volumetric Evaluation and Remaining Capacity Waste Management tracks the daily tonnages of waste and cover soil utilized at the Ottawa Landfill. The volumes of these materials are estimated from the tonnages using typical conversion factors for municipal waste (0.7 tonnes/m 3 ) and soil cover (1.8 tonnes/m 3 ). Based on these calculations, it is estimated that 28,815 cubic metres of waste, 5,002 cubic metres of daily cover and 2,582 cubic metres of intermediate cover were used at the site during this reporting period. Note that this does not include any cover that was stockpiled and re-used during the rehabilitation of the south and north sideslopes. As noted above, the waste disposal site was closed on September 30, Although there is approved airspace remaining, no further site capacity is to be utilized Final Cover Placement During this reporting period, the final phase of the Beanie Cap for final cover and landfill gas management was constructed on the top of the landfill footprint. The Beanie Cap and all final capping was completed by the end of August The full Beanie Cap construction incorporated an area of 1.77 hectares. In addition, final cap was placed on the south and north sideslopes of the landfill. In total, 29,169 m 3 of final clay cover was installed in 2011 (8,625 m 3 for the Beanie Cap and 20,544 m 3 for the sideslopes). The areas were covered with topsoil and hydroseeded. 4.2 OPERATIONAL PROCEDURES, EQUIPMENT AND FACILITIES In general, waste disposal and covering operations at the WM Ottawa Landfill remained consistent with previous years' procedures, as described in the Development and Operations Report (Henderson Paddon Environmental, 1994). A quarterly Operations Report was submitted to the MOE as per Condition 2 of Provincial Officers Order THQR for the first six months of Copies of the reports are posted on the WM website at: Planned construction and maintenance activities during landfill site operations were also reported on the company s website at: Changes to Operations, Equipment or Facilities During this reporting period, the landfill site stopped accepting solid waste for disposal and was closed. The following changes were made to site structures and facilities during this reporting period: Page 21

29 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Preparations were made for the construction of the Waste Transfer/Processing facility. Internal modifications were made to the buildings to be used for the facility, and exterior grading & concrete slab work was started. The landfill gas extraction system was expanded (see details below). The Landfill Gas to Energy plant continued operations throughout The plant has the capacity to generate 6.4MW of energy under current landfill gas generation rates. The hybrid poplar tree cap on the closed south cell was maintained. The blend of irrigation water was maintained at 100% leachate. The contaminated soil pad used to store imported Special Waste soil was decommissioned. The pad was excavated to the native soil subgrade and the excavated material disposed on the landfill site. In 2011, equipment was brought to the site from other WM facilities to assist with the hauling and placing of final cover material. The equipment included a Volvo 330 hydraulic excavator and two CAT dozers (D6 and D7). The equipment was removed from the site following landfill closure Landfill Inspections During the period from January to December 2011, WM s landfill staff conducted regular visual inspections along the landfill side slopes. Repairs were completed as necessary to mitigate gas and leachate seepage. Repairs generally involved excavating into the waste and backfilling with clear stone to improve drainage, or drilling into the waste to promote vertical drainage. In 2011, ditching was re-established along the north toe of slope following the decommissioning of the contaminated soil pad. On the south side of the landfill, a ditch was re-graded to re-establish natural flow in the southwest corner of the site following Highway 417 construction. The surface water in the ditch is directed to the municipal drain west of the landfill site Complaints & Enquiries Odour complaints received directly and/or forwarded to Waste Management by other parties are documented and addressed in accordance with the Amended Certificate of Approval (Air) No C9JMR. In this regard, a quarterly report is submitted to the Ontario Ministry of Environment as per Condition 7 of the Certificate of Approval summarizing the odour complaints and the mitigation actions taken. A total of 36 odour complaints were received directly by WM during Thirty-seven odour complaints were forwarded to WM from the NoDump website. WM staff analyzed each complaint to establish the source of the odour and to remedy the situation if warranted. Page 22

30 WM Ottawa Landfill 2011 Annual Report FINAL REPORT One complaint was received alleging that mud from waste trucks was being deposited on Carp Road. However, upon investigation, it was determined that trucks were not hauling to the landfill site on the day in question. It is believed that the mud was being deposited from trucks leaving a neighbouring industrial site. 4.3 OPERATION AND PERFORMANCE OF ENGINEERED FACILITIES Descriptions of the operations and performance of engineered facilities, including the purge well system, leachate collection and pre-treatment system, and landfill gas extraction system are presented below Purge Well System Operations & Maintenance During this reporting period, a total of 256,459 cubic metres of liquid was discharged to the forcemain system and treated at the sewage treatment plant, representing a decrease in volume of 8.9% over the previous year. This amount includes leachate-impacted groundwater collected by the purge well system and leachate collected from the lined cells and discharged to the forcemain. A summary of the weekly amounts of effluent discharged through the off-site forcemain is provided below (in cubic metres): Page 23

31 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Month Date (Weeks ending Saturday) & Weekly Quantity (m 3 ) 2011 Totals January , , , , ,602.4 February , , , , ,518.1 March , , , , ,929.2 April , , , , , ,566.7 May , , , , ,892.6 June , , , , ,998.2 July , , , , , ,439.7 August , , , , ,004.0 September , , , , ,090.1 October , , , , , ,088.1 November , , , , ,514.4 December , , , , , ,815.9 Annual Total 256,459.4 The total amount of effluent discharged from the site includes 19,123 cubic metres of leachate from the lined cells. In addition, 4,678 cubic metres of leachate were used in the irrigation of the poplar tree plantation. Regular monitoring of the effluent quality was completed in accordance with the Leachate Agreement. One exceedance of Total Suspended Solids (TSS) was noted in the weekly sample collected on June 2, 2011, and reported to the City of Ottawa (600 mg/l). The elevated TSS concentration is believed to be due to a build-up of sediment at the sampling location or a laboratory anomaly, since all other results were below 80 mg/l. The results for the weeks immediately before and after the exceedance were less than 20 mg/l. A summary of the main operational and maintenance activities for the purge well system and leachate pre-treatment system during this reporting period is provided below. A log of maintenance activities is found in Appendix E. Page 24

32 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Observation wells P31 and P32 were replaced with new drilled wells (W93 and W92, respectively), and the original wells were decommissioned in accordance with Ontario Regulation 903. Wells P31 and P32 were installed in 1986; P32 was dry during recent monitoring events and P31 had become blocked, so that a water level tape could not be inserted. The new wells W92 and W93 replace the original wells in the monthly water level monitoring program. The borehole logs and a description of the construction of the new monitoring wells are presented in Appendix F. A continuous water level monitoring system was installed in all purge wells and most of the observation wells to provide real-time data collection of groundwater elevations adjacent to the purge well system. This upgrade is expected to improve the ability to respond to possible gaps in the purge well system, as compared to when monthly water level readings are collected. The observation wells not included in the continuous monitoring program are located at greater distance from the purge well system in areas where water levels are not influenced by the pumping (eg., further east on the CAZ and MTO properties). Wells PW2R1 and PW6R1 were acid-cleaned in February to improve well efficiency. The application for the approval of a sequencing-batch reactor (SBR) treatment system to pre-treat leachate from the lined cells prior to discharge in the forcemain was still being reviewed in At the end of this reporting period the approval is pending Monitoring of Purge Well System Effectiveness Pumping of the purge wells was conducted following the conditions of Permit to Take Water No FZNB4, issued on July 14, This permit allows the pumping of all purge wells at specified rates, with a total permitted taking of 2,495,700 litres per day. Groundwater levels were measured in the purge wells and surrounding monitoring wells monthly during the reporting period in order to observe the effectiveness of the purge well system. The groundwater level monitoring results are used to confirm that the system is able to maintain the hydraulic heads in the purge wells below the elevations of surrounding downgradient monitoring wells, and to make adjustments to flow rates where necessary. Well locations requiring maintenance are also identified through the water level monitoring. The monthly groundwater elevations are presented in Appendix G. Water level hydrographs for the different areas of the purge well system (north to south) are presented in Appendix G to illustrate the various capture zones. The monthly water levels in purge wells PW1 to PW10 and PW20 are shown along with downgradient monitoring wells adjacent to the system. During the reporting period, the water levels in the purge wells were maintained below the downgradient monitoring wells with the following exceptions: Page 25

33 WM Ottawa Landfill 2011 Annual Report FINAL REPORT PW3, October Well and pump inspected; system appears fine; low water level in W81. PW6R1, December PW7, October to December Flows checked OK; water level returned to below W92 in January. Well inspected; casing is broken and collapsing; pump cannot be removed & water levels not accurate. Well is to be replaced in first quarter of Landfill Gas Extraction System During this reporting period, Waste Management completed the installation and commissioning of twelve vertical wells. Two gas wells were re-drilled to improve well efficiency. At the end of 2011, the gas extraction system for the main footprint included a total of 194 vertical wells on and around the existing landfill. Horizontal gas collection pipes were also installed in the southeast corner of the landfill and on the east landfill slope in December 2011 (100 metres combined length). A total of 1700 metres of horizontal gas collector have been installed to date. The landfill gas (LFG) collection system was monitored on a daily basis during this reporting period. The LFG field was balanced weekly by WM technicians. The operational performance data were entered into the Landfill Gas Management System (LGMS) for analysis by the LFG operations manager. During this reporting period, the total volume of landfill gas collected at the site was 43,506,145 cubic metres. The average concentration of methane as a percentage of the total volume of gas collected during the reporting period was 51.28%. Operational records and monitoring information are collected and retained on-site in accordance with the Certificate of Approval (Air) for the landfill gas system. Regular preventative maintenance was completed on the LFG collection and blower system. A quarterly report was submitted to the Ontario Ministry of Environment, as per the requirements of the Certificate of Approval (Air). The air barrier system, where air is injected into the subsurface to prevent the off-site movement of landfill gas, continued to operate along the eastern boundary of the landfill site Surface Emission Surveys Surface air emission surveys were completed in April, July and October The surveys were used to check the integrity of the final clay cap, to identify areas where the gas extraction vacuum needed to be increased, and to locate potential new LFG extraction wells. The results of the surveys are presented in reports prepared by Genivar, which were submitted to MOE. Page 26

34 WM Ottawa Landfill 2011 Annual Report FINAL REPORT Areas of methane emissions greater than 500 ppmv were identified within the landfill footprint in the April and October 2011 surveys. The areas represented less than 0.3% of the total number of measurement points collected in each of the surveys. No areas of emissions greater than 500 ppmv were identified in the July 2011 survey. The survey reports recommended that the integrity of the soil cover be checked and modified if required, and the vacuum increased at the wells located in the area of higher emission rates. Elevated methane emissions greater than 500 ppmv were not detected along survey lines above the air sparging system along Carp Road. 4.4 FINANCIAL ASSURANCE UPDATE As of December 31, 2011, financial assurance in the amount of $30,465,814 has been provided to the Director in accordance with Condition 2.3 (1) of Amended Certificate of Approval No. A issued September 8, Condition 2.4 of the Certificate of Approval requires that financial assurance be provided to the Director according to the following schedule: March 31, $29,243,405 March 31, $28,168,449 Financial assurance in the amount of $45, is also required to be provided to the Director for the Waste Transfer/Processing Facility, 30 days prior to commencement of operations (Condition 2.3 (2) of the Certificate of Approval). A written report reviewing the financial assurance required by the Certificate of Approval is to be completed and submitted to the MOE Director by March 31, 2013, and at intervals of not more than three years thereafter. Respectfully submitted, David Harding, M.Sc. P.Eng. Project Manager Page 27

35 TABLE 1: SUMMARY OF GROUNDWATER MONITORING PROGRAM Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Monitor Locations Parameters Monitoring Frequency Overburden/Shallow Bedrock P31, P32, P37, P51, P55, P65, P68, P79, P80-1, P80-2, P83, P84, P85; W2-3, W3-3, W16-3, W19, W42-2, W44-3, W46-2, W48-2, W48-3, W49-3, W50-2, W50-3, W51-2, W51-3, W52-2, W53-1, W53-2, W54-2, W55-2, W56-2, W57-2, W59-2, W60-2, W61, W62-2, W63, W64, W65-2, W66, W67-2, W69, W70, W72, W74, W76-2, W77-2, W79, W80, W81, W82, W84, W85; PW1, PW2R1, PW3, PW4, PW5, PW6R1, PW7, PW8, PW9, PW10, PW11, PW13, PW15, PW17, PW19, PW20, PW25. P31*, P32*, P85; W16-3, W19, W46-2, W48-3, W49-3, W55-2, W56-2, W66, W67-2, W69, W80, W81; PW1, PW2R1, PW3, PW4, PW5, PW6R1, PW7, PW8, PW9, PW10, PW11, PW13, PW20, PW25. P79, P80-1; W57-2, W60-2, W61, W62-2, W63, W65-2, W70, W77-2. PW1, PW2R1, PW3, PW4, PW5, PW6R1, PW7, PW8, PW9, PW10, PW20; W44-3, W51-2, W51-3, W52-2, W53-1, W53-2, W54-2, W55-2, W72, W80, W81, W82, W84, W85, WS2. W48-2, W56-2, W64, W79. Groundwater Elevation Groundwater Elevation PIL and SIL PIL and SIL PIL and SIL Once each year, in Spring Once each month Once each year, in Spring Twice each year, in Spring and Fall Quarterly W44-3, W48-2, W51-2, W51-3, W52-2, W53-1, W53-2, W54-2, W55-2, W56-2, W72, W79, W80, W81, W82, W84, W85, WS2. Deep Bedrock VOCs W42-1, W44-1, W46-1, W48-1, W50-1, W54-1, W56-1, W57-1, W59-1, W60- Groundwater Elevation 1, W62-1, W65-1R, W67-1, W76-1, W77-1. Once each year, in Spring Once each year, in Spring Note: * - Monitoring wells P31 and P32 were decommissioned and replaced with new wells W92 and W93 in September 2011.

36 TABLE 2: SUMMARY OF SURFACE WATER MONITORING PROGRAM Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Monitor Locations Parameters Monitoring Frequency On-site S17 (southeast stormwater recharge pond) Surface Water Elevation Once each year, in Spring Pond (on the former Bradley Pit) Surface Water Elevation Monthly Upgradient; Pond on former Reed Property SG-Reed Surface Water Elevation Once each year, in Spring Downgradient; Highway 417 Ditch S1, S2, S3 Surface Water Elevation Monthly S1, S3, S10 PIL and SIL Twice each year, in Spring and Fall S1, S3 VOCs Once each year, in Spring CAZ Property (southeast of landfill) SG-M1, SG-M3 PIL and SIL Twice each year, in Spring and Fall

37 TABLE 3: WATER LEVELS - OVERBURDEN/SHALLOW BEDROCK AND SURFACE WATER Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Name Most Recent Top of Casing Water Level Water Level Elevation (various dates) Elevation (masl) (mbtoc) (masl) 27-Apr-11 P blocked --- P dry --- P P P P P P P P P P P W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W Page 1 of 2

38 TABLE 3: WATER LEVELS - OVERBURDEN/SHALLOW BEDROCK AND SURFACE WATER Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Name Most Recent Top of Casing Water Level Water Level Elevation (various dates) Elevation (masl) (mbtoc) (masl) 27-Apr-11 PW PW2R PW PW PW PW6R PW PW > (foam at this depth) < PW PW PW PW PW PW PW PW PW SG-S SG-S SG-S SG-S17 N/A SG-Pond N/A SG-Reed Note: -1: deepest well in a multilevel monitor -2: intermediate well in a multilevel monitor -3: shallowest well in a multilevel monitor PW : Purge Well SG: Staff Gauge (at surface water monitoring locations) Page 2 of 2

39 TABLE 4: WATER LEVEL DATA - DEEP BEDROCK Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Name Top of Casing Water Level Water Level Elevation Elevation (masl) (mbtoc) (masl) 27-Apr-11 W W W W W W W W W W W W W65-1R W W W Note: -1: deepest well in a multilevel monitor

40 TABLE 5: LEACHATE CHEMISTRY Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l PW8 16-May < < < < < 0.1 < PW8 6-Dec < < < < 0.1 < PW8 29-May < < < 0.1 < PW8 7-Nov < < < < 0.1 < PW8 22-May < < < < 0.1 < PW8 28-Nov < < < < < 0.1 < PW8 4-May < < < < < 0.1 < PW8 5-Nov < < < < 0.1 < PW8 4-May < < < < PW8 13-Jul < < < < < 0.1 < PW8 24-Nov < < < < < 0.1 < PW8 28-Apr < < < < 0.1 < PW8 FD 28-Apr < < < < < 0.1 < PW8 7-Nov < < < < 0.1 < PW8 24-Apr < < < 0.1 < PW8 29-Nov < < < 0.1 < PW8 22-May < < < 0.1 < PW8 19-Nov < < < < 0.1 < PW8 30-Apr < < < 0.1 < PW8 FD 30-Apr < < < 0.1 < PW8 28-Oct < < < < < 0.1 < PW8 29-Apr < < < PW8 2-Nov < < < 0.1 < PW8 3-May < < < < < PW8 8-Nov < < <0.1 < Leachate from 30-May < < < < < 0.1 < Lined Cells (P3 19-Nov < < < 1 < < Apr < < < < < Oct < < 1 < < Apr < 5 < < Nov < < 2 < < May < < <1 < < Nov < <2 < < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 1 of 2

41 TABLE 5: LEACHATE CHEMISTRY Waste Management Ottawa Landfill Location Sample Date 1,1,1,2-Tetrachloroethane mg/l 1,1,1-Trichloroethane mg/l 1,1,2,2-Tetrachloroethane mg/l 1,1,2-Trichloroethane mg/l 1,1-Dichloroethane mg/l 1,1-Dichloroethene mg/l 1,2-Dichlorobenzene (o) mg/l 1,2-Dichloroethane mg/l 1,2-Dichloropropane mg/l 1,3,5-Trimethylbenzene mg/l 1,3-Dichlorobenzene (m) mg/l 1,4-Dichlorobenzene (p) mg/l Benzene mg/l Bromodichloromethane mg/l Bromoform mg/l Bromomethane mg/l Carbon Tetrachloride mg/l Chlorobenzene mg/l CB2533 Tables 2011.xlsx PW8 23-May-08 < < < < < < < < < < < < < < PW8 19-Nov-08 < < < < < < < < < < < < < < < PW8 30-Apr-09 < < < < < < < < < < < < < < PW8 28-Oct-09 < < < < < < < < < < < < < < PW8 29-Apr-10 < < < < < < < < < < < < < < PW8 03-May-11 < < < < < < < < < < < < < < PW8 08-Nov-11 < < < < < < < < < < < < < < < < 0.01 < < Leachate from 30-May-08 < < < < < < < < < < < < < < < < Lined Cells (P3) 19-Nov-08 < 0.01 < 0.01 < 0.02 < 0.02 < 0.01 < 0.01 < 0.02 < 0.02 < 0.01 < 0.02 < 0.02 < 0.02 < 0.01 < 0.01 < 0.02 < 0.05 < 0.01 < 0.01 < Apr-09 < < < < < < < < < < < < < < 0.01 < < < Oct-09 < < < < < < < < < < < < < 0.01 < < Apr-10 < 0.01 < 0.01 < 0.02 < 0.02 < 0.01 < 0.01 < 0.02 < 0.02 < 0.01 < 0.02 < < 0.01 < 0.01 < 0.02 < 0.05 < < May-11 < < < < < < < < < < < < 0.01 < < Nov-11 < 0.01 < 0.01 < 0.02 < 0.02 < 0.01 < 0.01 < 0.02 < 0.02 < 0.01 < 0.02 < 0.02 < 0.02 < 0.01 < 0.01 < 0.02 < 0.05 < 0.01 < 0.01 < 0.02 Chlorodibromomethane mg/l Location Sample Date Chloroethane mg/l Chloroform mg/l Chloromethane mg/l Cis-1,2-Dichloroethene mg/l Cis-1,3-Dichloropropene mg/l Ethylbenzene mg/l Ethylene Dibromide mg/l m+p-xylene mg/l PW8 23-May < < < < < < < < < < < < < < < PW8 19-Nov < < < < < < < < < < < < < < < PW8 30-Apr < < < < < < < < < < < < < < < < PW8 28-Oct < < < < < < < < < < < < < < < < < PW8 29-Apr < < < < < < < < < < < < < < < PW8 03-May < < < < < < < < < < < < < < < < PW8 08-Nov-11 < < < 0.01 < < < < < < 0.01 < < < < < < < < < Leachate from 30-May < < < < < < < < < < < < < < Lined Cells (P3) 19-Nov-08 < 0.02 < 0.01 < 0.05 < 0.01 < 0.02 < 0.05 < 0.01 < 0.02 < 0.01 < 0.01 < 0.02 < < 0.01 < 0.02 < 0.01 < 0.02 < Apr-09 < < < 0.01 < < < < < < < < < < < Oct-09 < < < < < < < < < < < < Apr-10 < 0.02 < 0.01 < 0.05 < 0.01 < 0.02 < < < 0.02 < < 0.01 < 0.02 < 0.01 < 0.02 < May-11 < < < < < < < < < < < < < Nov-11 < 0.02 < 0.01 < 0.05 < 0.01 < < < < 0.02 < < 0.01 < 0.02 < 0.01 < 0.02 < 0.02 Methylene Chloride mg/l o-xylene mg/l Styrene mg/l Tetrachloroethylene mg/l Toluene mg/l Trans-1,2-dichloroethene mg/l Trans-1,3-dichloropropene mg/l Trichloroethene mg/l Trichlorofluoromethane mg/l Vinyl Chloride mg/l Page 2 of 2

42 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l P79 17-May < < < < < 0.1 < P79 08-May < < < < 0.1 < P79 14-May < < < < < 0.1 < P79 21-May < < < < 0.1 < P79 27-Apr < < < < < 0.1 < P79 03-May < < < 0.1 < P79 28-Apr < < < < 0.1 < P79 26-Apr < < < < 0.1 < P79 26-May < < < < 0.1 < < 7 P79 29-Apr < < < < 0.1 < P79 28-Apr < < < < 0.1 < P79 05-May < < < < 0.1 < P May < < < < < 0.1 < P May < < < < < 0.1 < P May < 0.05 < < < < 0.1 < P May < 0.05 < < < < < 0.1 < P Apr < < < < < 0.1 < P May < < < < 0.1 < P Apr < < < < 0.1 < P Apr < < < < P May < < < < < < 0.1 < < 4 P Apr < < < < < 0.1 < < 7 P Apr < < < < < 0.1 < < 4 P May < < < < < < 0.1 < W May < < < < < 0.1 < W May < < < < < 0.1 < W May < < < < < 0.1 < W Jun < < < < < 0.1 < W Jun < < < < < 0.1 < W May < < < < 0.1 < W Apr < < < < < 0.1 < W Apr < < < < 0.1 < W44-3 FD 27-Apr < < < < 0.1 < W Apr < < < < 0.1 < W May < < < < < 0.1 < W Nov < < < < 0.1 < < 4 W Apr < < < < < 0.1 < W Oct < < < < < 0.1 < W Apr < < < < < 0.1 < W Nov < < < < < 0.1 < W May < < < < < 0.1 < W Nov < < < < < 0.1 < W44-3 FD 08-Nov < < < < 0.1 < W Nov < < < < 0.1 < W Feb < < < < < W May < 0.01 < 0.05 < < < < < < W Nov < < < < 0.1 < W Feb W May < < < < 0.1 < W Nov < < < < 0.1 < W Apr < < < < < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 1 of 11

43 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l W Nov < < < < 0.1 < W48-2 FD 28-Nov < < < < 0.1 < W Apr < < < W Nov < < < < 0.1 < W Apr < < < < 0.1 < W Nov < < < < 0.1 < W May < < < < W Nov < < < < < 0.1 < W Apr < < < < W Oct < < < < < W Apr < < < < < 0.1 < W Jul < < < < < 0.1 < W Nov < < < < < 0.1 < W Feb < < < < < W May < < < < < W Aug < < < < < 0.1 < W Nov < < < < < 0.1 < W51-2 FD 04-May < < < < < 0.1 < W May < < < < < 0.1 < W Nov < < < < < 0.1 < W May < < < < W Nov-11 monitoring well dry W May < < < < < 0.1 < < < W Nov < < < < 0.1 < < 0.1 < W Dec < < 5 97 < < < < 0.1 < W Jan < < < < 0.1 < W May < < < < 0.1 < W Feb < < < 5 78 < < < < 0.1 < W May < < < < < 0.1 < W Nov < < < < < 0.1 < W Feb < < < < < 0.1 < W May < < 5 70 < < < < 0.1 < W Nov < < < < 0.1 < W Apr < < 5 96 < < < < 0.1 < W Nov < < < < < 0.1 < W Apr < < < < < 0.1 < W Nov < < < < < 0.1 < W Apr < < < < < 0.1 < W Nov < < < < 0.1 < W Apr < < < < < 0.1 < W Oct < < < < < < 0.1 < < 1 W Apr < < < < 0.1 < < 0.7 W Nov < < < < < 0.1 < < 0.7 W53-1 FD 02-Nov < < < < < 0.1 < < 0.7 W May < < < < 0.1 < < 0.1 < < 0.7 W Nov < < < < 0.1 < < 0.1 < < 0.7 W Dec < 0.05 < < < < < < < W Jan < < 0.05 < < < < < < < W May < 0.05 < < < < W Feb < 0.01 < 0.05 < < 5 64 < < 0.01 < < W May < < 0.05 < < 5 89 < < < 0.01 < < < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 2 of 11

44 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l W Nov < < 5 62 < < < 0.01 < < < W Feb W May < 0.05 < < < < 0.01 < < W Nov < < < 0.01 < < W Apr < < < < 0.01 < < < W Nov < < 5 65 < < < 0.03 < < < W Apr < < < < 0.03 < < < W Nov < < < 0.03 < < < W Apr < < < 0.03 < < < W Nov < < < 0.03 < < < W Apr < < < < < 0.1 < < < 0.7 W Oct < < < < < < 0.1 < < < 0.7 W Apr < < < < 0.1 < < < < 0.7 W Nov < < < < 0.1 < < < 0.7 W May < < < < < 0.1 < < < < 0.7 W Nov < < < < < 0.1 < < < < 0.7 W Dec < < < < 0.01 < < W Jan < < < 0.01 < < W54-2 FD 17-Jan < < < 0.01 < < W May < < < < 0.01 < < < W Feb < < < < 0.01 < < < W May < < < < < < W Nov < < < < < W Feb W May < < < < < 0.1 < W Nov < < < < W Apr < < < < < 0.01 < < W Nov < < < 0.03 < < W Apr < < < < 0.03 < < 0.1 < W Nov < < < < W54-2 FD 08-Nov < < < < W Apr < < < 0.03 < < W Nov < < < < W Apr < < < < < 0.1 < < < 0.7 W Oct < < < < < 0.1 < < < 0.7 W Apr < < < < < 0.1 < < < 0.7 W Nov < < < < < 0.1 < < < 0.7 W May < < < < < 0.1 < < < 0.7 W Nov < < < < < 0.1 < < < 0.7 W May < < < < W Nov < 0.02 < < < < W Dec < < < < < 0.1 < W Jan < 0.05 < < < < 0.1 < W May < 0.05 < < < < < 0.1 < W Feb < 0.01 < 0.05 < < < 0.01 < < < 0.1 < W May < 0.05 < < < < < 0.1 < W Nov < 0.05 < < < < < 0.1 < W Feb W May < 0.05 < < < < 0.1 < W56-2 FD 03-May < 0.05 < < < < 0.1 < W Nov < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 3 of 11

45 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l W Apr < < < < < 0.1 < W May < < < < < 0.1 < W Nov < < < < 0.1 < W Apr < < < < 0.1 < W Nov < < < 0.1 < W Apr < < < < W56-2 FD 26-Apr < < < W Nov < < < < 0.1 < W May < < < < < W Nov < < < < 0.1 < < 4 W Apr < < < < < W Oct < < < < < 7 W Apr < < < < < 0.1 < W Jul < < < < < 0.1 < W Nov < < < < < 0.1 < W Feb < < < < < W May < < < < < 0.1 < W Aug < < < < < 0.1 < W Nov < < < < < 0.1 < W Feb W May < 0.01 < < 5 19 < < < < < W May < < 0.02 < < < 0.1 < < 0.1 < < 10 W Apr < < 0.02 < < < 0.1 < < < 7 W57-2 FD 29-Apr < < 0.01 < < < < 0.1 < < < < 0.7 W Apr < < 0.02 < < < 0.1 < < 0.1 < < 7 W May < < 0.02 < < < 0.1 < < 0.1 < < 0.7 W Feb W May < 0.01 < < < < < 0.1 < W May < < < < 0.1 < < < 0.1 < < 4 W Apr < < < < 0.1 < < < 0.1 < < 0.7 W Apr < < < < 0.1 < < < 0.1 < < 1 W May < < < < 0.1 < < < < 0.7 W61 24-Feb W61 06-May < 0.01 < < 5 12 < < < < 0.1 < W61 26-May < < 0.02 < < < < 0.1 < < 4 W61 29-Apr < < 0.02 < < 4 17 < < < < 0.1 < < 0.7 W61 28-Apr < < 0.02 < < < < 0.1 < < 10 W61 04-May < < 0.02 < < < < < 0.1 < < 0.7 W Feb W May < < < < 0.1 < 0.1 < W May < < 0.02 < < < < 0.1 < < 4 W Apr < < < 0.1 < < 4 W Apr < 0.02 < < < < 0.1 < < 10 W62-2 FD 28-Apr < 0.02 < < < < 0.1 < < 10 W May < < 0.02 < < < < < 0.1 < < 0.7 W63 24-Feb W63 07-May < < < < 0.1 < W63 26-May < < < < < 0.1 < W63 29-Apr < < < < < 0.1 < W63 29-Apr < < < < < 0.1 < W63 05-May < < < < < 0.1 < < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 4 of 11

46 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l W64 25-Feb W64 05-May < < < < 0.1 < W64 26-May < < < < < W64 FD 26-May < < < < < 0.1 < W64 29-Apr < < < < 0.1 < W64 28-Apr < < < < 7 W64 15-Jul < < < W64 03-Nov < < < < 0.1 < W64 FD 03-Nov < < < < 0.1 < W64 03-Feb < < < < 0.1 < W64 05-May < < < < 0.1 < < W64 09-Aug < < < < 0.1 < < W64 09-Nov < < < < 0.1 < < W Feb W Apr < < < < 0.01 < < 0.01 < 0.1 < W May < < < 5 40 < < < 0.01 < < < W May < < < < 0.1 < < < 1 W Apr < < < < < 1 W Apr < < < < 0.1 < < < < 4 W May < < < < < 0.1 < < < W70 25-Feb W70 07-May < < 5 52 < < < < < 0.01 < 0.1 < W70 21-May < < 0.02 < < < < 0.1 < < 0.1 < < 4 W70 28-Apr < < 0.02 < < < < 0.1 < < < < 4 W70 29-Apr < < 0.02 < < < 0.1 < < < < 4 W70 04-May < < 0.02 < < 4 47 < < < 0.1 < < < < 0.7 W72 25-Feb W72 23-May < < < < 0.1 < < W72 19-Nov < < < < < 0.1 < < < < 0.7 W72 29-Apr < < < < < 0.1 < < W72 28-Oct < < < < < 0.1 < < 0.1 < < 0.7 W72 28-Apr < < < < < 0.1 < W72 02-Nov < < < < < 0.1 < < W72 05-May < < < < < < 0.7 W72 09-Nov < < < < 0.1 < < W Apr < < < < 0.1 < W Apr < < < < 0.1 < W May < 0.02 < < < < < 7 W Apr < < 0.02 < < < < < 4 W Apr < < 0.02 < < < < < 7 W May < 0.02 < < < < 0.1 < W79 23-May < < < < < 0.1 < W79 FD 23-May < < < < < 0.1 < W79 19-Nov < < < < 0.1 < W79 29-Apr < < < < < 0.1 < W79 FD 29-Apr < < < < 0.1 < < 0.1 < W79 28-Oct < < < < < 0.1 < W79 28-Apr < < < < < 0.1 < W79 15-Jul < < < 0.1 < W79 02-Nov < < < < < 0.1 < W79 03-Feb < < < < < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 5 of 11

47 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l W79 04-May < < < 0.1 < W79 09-Aug < < < < 0.1 < < 5 W79 08-Nov < < < < 0.1 < W80 23-May < < < W80 19-Nov < < < 0.1 < W80 29-Apr < < < W80 28-Oct < < < W80 28-Apr < < < < W80 02-Nov < < < < W80 FD 05-May < < < < < 0.1 < W80 05-May < < < < < 0.1 < W80 09-Nov < < < < < W81 23-May < < < < W81 19-Nov < < < < 0.1 < < < 1 W81 29-Apr < < < < W81 28-Oct < < < < < W81 28-Apr < < < < 0.1 < < < 4 W81 Dup 28-Apr < < < < < 0.1 < < < < 1 W81 02-Nov < < < < W81 05-May < < < < 0.1 < < W81 09-Nov < < < < < 0.1 < < < W82 04-May < < < < 0.1 < < < W82 08-Nov < < < < < 0.1 < < < W84 04-May < < < < W84 08-Nov < < < < < 0.1 < W85 04-May < < < 0.1 < W85 08-Nov < < < 0.1 < < WS2 14-Nov < < < 0.03 < < WS2 15-Feb < < < 0.03 < < WS2 FD 15-Feb < < < < WS2 24-Apr < < < < WS2 16-Aug < < < < 0.1 < WS2 FD 16-Aug < < < < 0.1 < WS2 30-Nov < < < 0.03 < < 0.1 < WS2 21-Feb < < < < WS2 20-Nov < < < < 0.1 < < < 0.7 WS2 30-Apr < < < < < < 0.7 WS2 28-Oct < < < < < WS2 FD 28-Oct < < < < < WS2 28-Apr < < < < < WS2 02-Nov < < < < < WS2 04-May < < < < < WS2 09-Nov < < < < < PW1 16-May PW1 FD 16-May < < < < < PW1 22-Nov < < < < < 0.1 < PW1 09-May < < < < 0.1 < PW1 FD 09-May < < < < < 0.1 < PW1 06-Dec < < < < < 0.1 < PW1 30-Aug < < < < < < 0.1 < PW1 07-Nov < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 6 of 11

48 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l PW1 22-May < < < < < 0.1 < PW1 04-Nov < < < < < 0.1 < PW1 04-May < < < < 0.1 < PW1 05-Nov < < < < 0.1 < PW1 04-May < < < < < 0.1 < PW1 24-Nov < < < < 0.1 < PW1 FD 24-Nov < < < < 0.1 < PW1 28-Apr < < < < 0.1 < PW1 07-Nov < < < < 0.1 < PW1 24-Apr < < < < PW1 29-Nov < < < < 0.1 < PW1 22-May < < < < PW1 19-Nov < < < 0.1 < PW1 30-Apr < < < < < 0.1 < PW1 28-Oct < < < < < 0.1 < PW1 29-Apr < < < < PW1 02-Nov < < < < PW1 03-May < < < < < 0.1 < PW1 08-Nov < < < < < 0.1 < PW2 22-Nov < < < < < < 0.1 < PW2 09-May < < < < < 0.1 < PW2 06-Dec < < < < < 0.1 < PW2 18-Dec < < < < < 0.1 < PW2 29-May < < < < < 0.1 < PW2 07-Nov < < < < 0.1 < PW2 22-May < < < < < 0.1 < PW2 04-Nov < < < < < 0.1 < PW2 04-May < < < < PW2 05-Nov < < < < 0.1 < PW2 04-May < < < < 0.1 < PW2 24-Nov < < < < < 0.1 < PW2 28-Apr < < < < 0.1 < PW2 07-Nov < < < < 0.1 < PW2 FD 07-Nov < < < < 0.1 < PW2 24-Apr < < < < < PW2 29-Nov < < < 0.1 < PW2 22-May < < < < 0.1 < PW2 19-Nov < < < 0.1 < PW2 30-Apr < < < < PW2 29-Apr < < < < PW2R1 02-Nov < < < PW2R1 03-May < < < < 0.1 < PW2R1 08-Nov < < < < < PW3 09-May < < < < < 0.1 < PW3 06-Dec < < < < < 0.1 < PW3 29-May < < < < < 0.1 < PW3 07-Nov < < < < 0.1 < PW3 22-May < < < < < 0.1 < PW3 04-Nov < < < < < 0.1 < PW3 04-May < < < < 0.1 < PW3 FD 04-May < < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 7 of 11

49 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l PW3 05-Nov < < < < 0.1 < PW3 04-May < < < < 0.1 < PW3 24-Nov < < < < < 0.1 < PW3 28-Apr < < < < < 0.1 < PW3 07-Nov < < < < 0.1 < PW3 24-Apr < < < < < PW3 29-Nov < < < < < 0.1 < PW3 22-May < < < < < 0.1 < PW3 19-Nov < < < < < 0.1 < PW3 30-Apr < < < < < 0.1 < PW3 28-Oct < < < < < 0.1 < PW3 29-Apr < < < < < 0.1 < PW3 FD 29-Apr < < < < 0.1 < PW3 02-Nov < < < < < 0.1 < PW3 03-May < < < < < 0.1 < PW3 08-Nov < < < < < 0.1 < PW4 06-Dec < < < < < 0.1 < PW4 29-May < < < < < 0.1 < PW4 07-Nov < < < < 0.1 < PW4 22-May < < < < < 0.1 < PW4 04-Nov < < < < < 0.1 < PW4 04-May < < < < < 0.1 < PW4 05-Nov < < < < 0.1 < PW4 FD 05-Nov < < < < 0.1 < PW4 27-Apr < < < < < PW4 04-May < < < 0.5 < PW4 FD 04-May < < < 0.1 < PW4 13-Jul < < < < 0.1 < PW4 FD 13-Jul < < < < 0.1 < PW4 24-Nov < < < < < 0.1 < PW4 28-Apr < < < < 0.1 < PW4 07-Nov < < < < 0.1 < PW4 24-Apr < < < < PW4 FD 24-Apr < < < < < PW4 29-Nov < < < < 0.1 < PW4 22-May < < < < < 0.1 < PW4 FD 22-May < < < < < 0.1 < PW4 19-Nov < < < < < 0.1 < PW4 FD 19-Nov < < < < < 0.1 < PW4 30-Apr < < < < 0.1 < PW4 28-Oct < < < < < 0.1 < PW4 29-Apr < < < < < 0.1 < PW4 02-Nov < < < 0.1 < PW4 03-May < < < < < 0.1 < PW4 08-Nov < < < < < 0.1 < PW5 23-Nov < < < < < 0.1 < PW5 09-May < < < < < 0.1 < PW5 06-Dec < < < < < 0.1 < PW5 29-May < < < < < 0.1 < PW5 07-Nov < < < < 0.1 < PW5 22-May < < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 8 of 11

50 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l PW5 04-Nov < < < < < 0.1 < PW5 04-May < < < < 0.1 < PW5 05-Nov < < < < 0.1 < PW5 04-May < < < < 0.1 < PW5 24-Nov < < < < < 0.1 < PW5 28-Apr < < < < < 0.1 < PW5 07-Nov < < < < 0.1 < PW5 24-Apr < < < < < PW5 29-Nov < < < < 0.1 < PW5 22-May < < < < < 0.1 < PW5 19-Nov < < < < 0.1 < PW5 30-Apr < < < < < 0.1 < PW5 28-Oct < < < < < 0.1 < PW5 29-Apr < < < < 0.1 < PW5 02-Nov < < < < < 0.1 < PW5 03-May < < < < < 0.1 < PW5 08-Nov < < < < 0.1 < PW6 16-May < < < < < 0.1 < PW6 22-Nov < < < < < 0.1 < PW6 09-May < < < < < 0.1 < PW6 06-Dec < < < < < 0.1 < PW6 29-May < < < < < 0.1 < PW6 07-Nov < < < < 0.1 < PW6 22-May < < < < < 0.1 < PW6 04-Nov < < < < < 0.1 < PW6 04-May < < < < 0.1 < PW6 05-Nov < < < < 0.1 < PW6 04-May < < < < 0.1 < PW6 24-Nov < < < < < 0.1 < PW6 28-Apr < < < < 0.1 < PW6 07-Nov < < < < 0.1 < PW6 24-Apr < < < < < PW6 29-Nov < < < 0.1 < PW6 22-May < < < < 0.1 < PW6 19-Nov < < < < 0.1 < PW6 30-Apr < < < < < 0.1 < PW6 28-Oct < < < < < 0.1 < PW6 FD 28-Oct < < < < < 0.1 < PW6 29-Apr < < < < 0.1 < PW6R1 02-Nov < < < < PW6R1 03-May-11 pump removed for maintenance PW6R1 08-Nov < < < < 0.1 < PW7 16-May < < < < < 0.1 < PW7 22-Nov < < < < < 0.1 < PW7 09-May < < < < < 0.1 < PW7 06-Dec < < < < < 0.1 < PW7 29-May < < < < 0.1 < PW7 07-Nov < < < < 0.1 < PW7 22-May < < < < < 0.1 < PW7 28-Nov < < < < < 0.1 < PW7 04-May < < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 9 of 11

51 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l Cyanide mg/l PW7 05-Nov < < < < 0.1 < PW7 04-May < < < < 0.1 < PW7 13-Jul < < < < 0.1 < PW7 24-Nov < < < < < 0.1 < PW7 28-Apr < < < < < 0.1 < PW7 07-Nov < < < < 0.1 < PW7 24-Apr < < < < < 0.1 < PW7 29-Nov < < < < < 0.1 < PW7 22-May < < < < 0.1 < PW7 19-Nov < < < < 0.1 < PW7 30-Apr < < < < 0.1 < PW7 28-Oct < < < < 0.1 < PW7 29-Apr < < < < 0.1 < PW7 02-Nov < < < < < 0.1 < PW7 03-May < < < < < 0.1 < PW7 08-Nov < < < < 0.1 < PW9 16-May < < < < < PW9 22-Nov < < < < < 0.1 < PW9 10-May < < < < 0.1 < PW9 06-Dec < < < < < 0.1 < PW9 29-May < < < < < PW9 07-Nov < < < < 0.1 < PW9 22-May < < < < < PW9 04-Nov < < < < < 0.1 < PW9 04-May < < < < < PW9 05-Nov < < < < PW9 04-May < < < < 0.1 < PW9 13-Jul < < < < PW9 24-Nov < < < < 0.1 < PW9 28-Apr < < < < PW9 07-Nov < < < < PW9 24-Apr < < < < 0.1 < PW9 29-Nov < < < < PW9 FD 29-Nov < < < < PW9 22-May < < < < PW9 19-Nov < < < < PW9 30-Apr < < < < PW9 28-Oct < < < < < 0.1 < PW9 29-Apr < < < < < PW9 02-Nov < < < < PW9 FD 02-Nov < < < < PW9 03-May < < < < PW9 08-Nov < < < < PW10 22-Nov < < < < < 0.1 < PW10 10-May < < < < < 0.1 < PW10 06-Dec < < < < PW10 29-May < < < < < PW10 07-Nov < < < < 0.1 < PW10 22-May < < < < < PW10 04-Nov < < < < < 0.1 < PW10 04-May < < < < < Page 10 of 11 Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l

52 TABLE 6: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l PW10 17-Nov < < < < 0.1 < PW10 04-May < < < 0.1 < 0.5 < PW10 13-Jul < < < < 0.1 < PW10 24-Nov < < < < 0.1 < PW10 28-Apr < < < PW10 07-Nov < < < < 0.1 < PW10 24-Apr < < < < 0.1 < PW10 29-Nov < < < PW10 22-May < < < < PW10 19-Nov < < < 0.1 < PW10 30-Apr < < < < < PW10 28-Oct < < < < < 0.1 < PW10 29-Apr < < < < < 0.1 < PW10 02-Nov < < < < < 0.1 < PW10 03-May < < < < < PW10 08-Nov < < < < 0.1 < PW20 16-May < < < < 0.1 < PW20 10-May < < < < < 0.1 < PW20 06-Dec < < < < < 0.1 < PW20 29-May < < < < < 0.1 < PW20 07-Nov < < < < 0.1 < PW20 22-May < < < < < 0.1 < PW20 04-Nov < < < < < 0.1 < PW20 04-May < < < < < 0.1 < PW20 05-Nov < < < < 0.1 < PW20 04-May < < 0.1 < PW20 13-Jul < < < < 0.1 < PW20 24-Nov < < < < 0.1 < PW20 28-Apr < < < < < 0.1 < PW20 08-Nov < < < < 0.1 < PW20 24-Apr < < < < < 0.1 < PW20 29-Nov < < < < 0.1 < PW20 22-May < < < < < 0.1 < PW20 19-Nov < < < < < 0.1 < PW20 30-Apr < < < < < 0.1 < PW20 28-Oct < < < < < 0.1 < PW20 29-Apr < < < < 0.1 < PW20 02-Nov < < < < < 0.1 < PW20 03-May < < < < 0.1 < PW20 08-Nov < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 11 of 11

53 TABLE 7: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (VOCs) Waste Management Ottawa Landfill CB2533 Tables 2011.xls Location Sample Date 1,1,1,2-Tetrachloroethane mg/l 1,1,1-Trichloroethane mg/l 1,1,2,2-Tetrachloroethane mg/l 1,1,2-Trichloroethane mg/l 1,1-Dichloroethane mg/l 1,1-Dichloroethene mg/l 1,2-Dichlorobenzene (o) mg/l 1,2-Dichloroethane mg/l 1,2-Dichloropropane mg/l W May-08 < < < < < < < < < < < < < < < < < < < W Apr-09 < < < < < < < < < < < < < < < < < < < W Apr-10 < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < W May-03 < < < < < < < < < < < < < < < < < < < W May-04 < < < < < < < < < < < < < < < < < < < < W Apr-05 < < < < < < < < < < < < < < < < < < < < W Apr-06 < < < < < < < < < < < < < < < < < < < W Apr-07 < < < < < < < < < < < < < < < < < < < < W May-08 < < < < < < < < < < < < < < < < < < W Apr-09 < < < < < < < < < < < < < < < < < < W Apr-10 < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < W51-2 FD 04-May-11 < < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < < W Dec-01 < < < < < < < < < < < < < < < < < < < < W Jan-02 < < < < < < < < < < < < < < < < < < < < W May-02 < < < < < < < < < < < < < < < < < < < < W May-03 < < < < < < < < < < < < < < < < < < < W May-04 < < < < < < < < < < < < < < < < < < < < W Apr-05 < < < < < < < < < < < < < < < < < < < < W Apr-06 < < < < < < < < < < < < < < < < < < < W Apr-07 < < < < < < < < < < < < < < < < < < < W Apr-09 < < < < < < < < < < < < < < < < < < W Apr-10 < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < W Dec-01 < < < < < < < < < < < < < < < < < < < W Jan-02 < < < < < < < < < < < < < < < < < < < < W May-02 < < < < < < < < < < < < < < < < < < < < W May-03 < < < < < < < < < < < < < < < < < < < < W May-04 < < < < < < < < < < < < < < < < < < < < W Apr-05 < < < < < < < < < < < < < < < < < < < < W Apr-06 < < < < < < < < < < < < < < < < < < < < W Apr-07 < < < < < < < < < < < < < < < < < < < < W Apr-09 < < < < < < < < < < < < < < < < < < < < W Apr-10 < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < < ,3,5-Trimethylbenzene mg/l 1,3-Dichlorobenzene (m) mg/l 1,4-Dichlorobenzene (p) mg/l Benzene mg/l Bromodichloromethane mg/l Bromoform mg/l Bromomethane mg/l Carbon Tetrachloride mg/l Chlorobenzene mg/l Chlorodibromomethane mg/l Chloroethane mg/l Page 1 of 6

54 TABLE 7: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (VOCs) Waste Management Ottawa Landfill CB2533 Tables 2011.xls Location Sample Date 1,1,1,2-Tetrachloroethane mg/l 1,1,1-Trichloroethane mg/l 1,1,2,2-Tetrachloroethane mg/l 1,1,2-Trichloroethane mg/l 1,1-Dichloroethane mg/l 1,1-Dichloroethene mg/l 1,2-Dichlorobenzene (o) mg/l 1,2-Dichloroethane mg/l 1,2-Dichloropropane mg/l W Dec-01 < < < < < < < < < < < < < < < < < < < < W Jan-02 < < < < < < < < < < < < < < < < < < < W54-2 FD 17-Jan-02 < < < < < < < < < < < < < < < < < < < W May-03 < < < < < < < < < < < < < < < < < < < < W May-04 < < < < < < < < < < < < < < < < < < < < W Apr-05 < < < < < < < < < < < < < < < < < < < < W Apr-06 < < < < < < < < < < < < < < < < < < < < W Apr-07 < < < < < < < < < < < < < < < < < < < < W Apr-09 < < < < < < < < < < < < < < < < < < < W Apr-10 < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < < W Dec-01 < < < < < < < < < < < < < < < < < < < < W Jan-02 < < < < < < < < < < < < < < < < < < < < W May-03 < < < < < < < < < < < < < < < < < < < < W May-04 < < < < < < < < < < < < < < < < < < < < W56-2 FD 03-May-04 < < < < < < < < < < < < < < < < < < < < W Apr-05 < < < < < < < < < < < < < < < < < < < < W Apr-06 < < < < < < < < < < < < < < < < < < < < W Apr-07 < < < < < < < < < < < < < < < < < < < < W56-2 FD 26-Apr-07 < < < < < < < < < < < < < < < < < < < < W May-08 < < < < < < < < < < < < < < < < < < < < W Apr-09 < < < < < < < < < < < < < < < < < < < < W Apr-10 < < < < < < < < < < < < < < < < < < < < W May-11 < < < < < < < < < < < < < < < < < < < < W72 23-May-08 < < < < < < < < < < < < < < < < < < < < W72 29-Apr-09 < < < < < < < < < < < < < < < < < < W72 28-Apr-10 < < < < < < < < < < < < < < < < < < < W72 05-May-11 < < < < < < < < < < < < < < < < < < < < W79 23-May-08 < < < < < < < < < < < < < < < < < < < W79 FD 23-May-08 < < < < < < < < < < < < < < < < < < < W79 29-Apr-09 < < < < < < < < < < < < < < < < < < < W79 FD 29-Apr-09 < < < < < < < < < < < < < < < < < < < W79 28-Apr-10 < < < < < < < < < < < < < < < < < < < W79 04-May-11 < < < < < < < < < < < < < < < < < < < W80 23-May-08 < < < < < < < < < < < < < < < W80 29-Apr-09 < < < < < < < < < < < < < < < W80 28-Apr-10 < < < < < < < < < < < < < < < W80 FD 05-May-11 < < < < < < < < < < < < < < < ,3,5-Trimethylbenzene mg/l 1,3-Dichlorobenzene (m) mg/l 1,4-Dichlorobenzene (p) mg/l Benzene mg/l Bromodichloromethane mg/l Bromoform mg/l Bromomethane mg/l Carbon Tetrachloride mg/l Chlorobenzene mg/l Chlorodibromomethane mg/l Chloroethane mg/l Page 2 of 6

55 TABLE 7: OVERBURDEN/SHALLOW BEDROCK GROUNDWATER QUALITY (VOCs) Waste Management Ottawa Landfill CB2533 Tables 2011.xls Location Sample Date 1,1,1,2-Tetrachloroethane mg/l 1,1,1-Trichloroethane mg/l 1,1,2,2-Tetrachloroethane mg/l 1,1,2-Trichloroethane mg/l 1,1-Dichloroethane mg/l 1,1-Dichloroethene mg/l 1,2-Dichlorobenzene (o) mg/l 1,2-Dichloroethane mg/l 1,2-Dichloropropane mg/l W80 05-May-11 < < < < < < < < < < < < < < < W81 23-May-08 < < < < < < < < < < < < < < < < < < < W81 29-Apr-09 < < < < < < < < < < < < < < < < W81 28-Apr-10 < < < < < < < < < < < < < < < < < < < < W81 FD 28-Apr-10 < < < < < < < < < < < < < < < < < < < < W81 05-May-11 < < < < < < < < < < < < < < < < < < W82 04-May-11 < < < < < < < < < < < < < < < < < < < < W84 04-May-11 < < < < < < < < < < < < < < < < < < W85 04-May-11 < < < < < < < < < < < < < < < < < < < WS2 14-Nov-06 < < < < < < < < < < < < < < < < < < < WS2 24-Apr-07 < < < < < < < < < < < < < < < < < < < WS2 20-Nov-08 < < < < < < < < < < < < < < < < < WS2 30-Apr-09 < < < < < < < < < < < < < < < < < < < WS2 28-Oct-09 < < < < < < < < < < < < < < < < < WS2 28-Apr-10 < < < < < < < < < < < < < < < < < WS2 04-May-11 < < < < < < < < < < < < < < < < ,3,5-Trimethylbenzene mg/l 1,3-Dichlorobenzene (m) mg/l 1,4-Dichlorobenzene (p) mg/l Benzene mg/l Bromodichloromethane mg/l Bromoform mg/l Bromomethane mg/l Carbon Tetrachloride mg/l Chlorobenzene mg/l Chlorodibromomethane mg/l Chloroethane mg/l Page 3 of 6

56 TABLE 7: OVERBURDEN/SHA Waste Management Ottawa La CB2533 Tables 2011.xlsx Location Sample Date W May-08 W Apr-09 W Apr-10 W May-11 W May-03 W May-04 W Apr-05 W Apr-06 W Apr-07 W May-08 W Apr-09 W Apr-10 W May-11 W51-2 FD 04-May-11 W May-11 W May-11 W May-11 W Dec-01 W Jan-02 W May-02 W May-03 W May-04 W Apr-05 W Apr-06 W Apr-07 W Apr-09 W Apr-10 W May-11 W Dec-01 W Jan-02 W May-02 W May-03 W May-04 W Apr-05 W Apr-06 W Apr-07 W Apr-09 W Apr-10 W May-11 Chloroform mg/l Chloromethane mg/l Cis-1,2-Dichloroethene mg/l Cis-1,3-Dichloropropene mg/l Ethylbenzene mg/l Ethylene Dibromide mg/l m+p-xylene mg/l Methylene Chloride mg/l o-xylene mg/l < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < Styrene mg/l Tetrachloroethylene mg/l Toluene mg/l Trans-1,2-dichloroethene mg/l Trans-1,3-dichloropropene mg/l Trichloroethene mg/l Trichlorofluoromethane mg/l Vinyl Chloride mg/l Page 4 of 6

57 TABLE 7: OVERBURDEN/SHA Waste Management Ottawa La CB2533 Tables 2011.xlsx Location Sample Date W Dec-01 W Jan-02 W54-2 FD 17-Jan-02 W May-03 W May-04 W Apr-05 W Apr-06 W Apr-07 W Apr-09 W Apr-10 W May-11 W May-11 W Dec-01 W Jan-02 W May-03 W May-04 W56-2 FD 03-May-04 W Apr-05 W Apr-06 W Apr-07 W56-2 FD 26-Apr-07 W May-08 W Apr-09 W Apr-10 W May-11 W72 23-May-08 W72 29-Apr-09 W72 28-Apr-10 W72 05-May-11 W79 23-May-08 W79 FD 23-May-08 W79 29-Apr-09 W79 FD 29-Apr-09 W79 28-Apr-10 W79 04-May-11 W80 23-May-08 W80 29-Apr-09 W80 28-Apr-10 W80 FD 05-May-11 Chloroform mg/l Chloromethane mg/l Cis-1,2-Dichloroethene mg/l Cis-1,3-Dichloropropene mg/l Ethylbenzene mg/l Ethylene Dibromide mg/l m+p-xylene mg/l Methylene Chloride mg/l o-xylene mg/l < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < Styrene mg/l Tetrachloroethylene mg/l Toluene mg/l Trans-1,2-dichloroethene mg/l Trans-1,3-dichloropropene mg/l Trichloroethene mg/l Trichlorofluoromethane mg/l Vinyl Chloride mg/l Page 5 of 6

58 TABLE 7: OVERBURDEN/SHA Waste Management Ottawa La CB2533 Tables 2011.xlsx Location W80 W81 W81 W81 W81 FD W81 W82 W84 W85 WS2 WS2 WS2 WS2 WS2 WS2 WS2 Sample Date 05-May May Apr Apr Apr May May May May Nov Apr Nov Apr Oct Apr May-11 Chloroform mg/l Chloromethane mg/l Cis-1,2-Dichloroethene mg/l Cis-1,3-Dichloropropene mg/l Ethylbenzene mg/l Ethylene Dibromide mg/l m+p-xylene mg/l Methylene Chloride mg/l o-xylene mg/l < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < Styrene mg/l Tetrachloroethylene mg/l Toluene mg/l Trans-1,2-dichloroethene mg/l Trans-1,3-dichloropropene mg/l Trichloroethene mg/l Trichlorofluoromethane mg/l Vinyl Chloride mg/l Page 6 of 6

59 TABLE 8: ASSESSMENT PARAMETER LIMIT EXCEEDANCES IN DESIGNATED GROUNDWATER MONITORS Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Nitrate mg/l Trichloroethylene mg/l Vinyl chloride mg/l Ammonia mg/l Location Sample Date RUL Prediction Limit North Boundary W64 03-Feb May Aug Nov W May CAZ Properties North CAZ W May Nov W May W May Nov W82 04-May Nov W85 04-May Nov WS2 04-May Nov South CAZ W May Nov W May Nov W Feb May Aug Nov W79 03-Feb May Aug < Nov W84 04-May Nov Southeast CAZ W May Nov W May W May Nov MTO Highway 417 Ramp W Feb May Aug Nov Total Kjeldahl Nitrogen mg/l Chemical Oxygen Demand mg/l Potassium mg/l Chloroethane mg/l 1,1-Dichloroethane mg/l cis-1,2-dichloroethene mg/l Notes: VOCs are sampled once annually, as per the approved EMP Reporting limits greater than the prediction limit

60 TABLE 9: SURFACE WATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Un-ionized ammonia (mg/l) Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l S1 1-Jun < < < < < S1 22-Nov < < < < 0.1 < S1 11-May < < < S1 FD 11-May < < < S1 13-Nov < < < 0.1 < S1 15-May < < < < < S1 12-Nov < < < < < S1 22-May < < < < < S1 15-Aug S1 5-Nov < < < < S1 22-Dec S1 11-Feb S1 30-Apr < < < < S1 8-Sep S1 5-Nov < < < S1 27-Apr < < < < < S1 24-Aug S1 28-Nov < < < < S1 FD 28-Nov < < < < S1 26-Apr < < < < < S1 29-Aug S1 7-Nov < < < < S1 24-Apr < < < < S1 16-Aug S1 27-Nov < < < < < S1 23-May < < < < S1 FD 23-May < < < < S1 19-Nov < < < S1 29-Apr < < S1 29-Oct < < < < < S1 FD 29-Oct < < < < < S1 28-Apr < < < < S1 FD 28-Apr < < < < S1 2-Nov * < < < < < S1 FD 2-Nov * < < < < S1 3-May < < < < S1 8-Nov < < < < < 0.1 < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 1 of 3

61 TABLE 9: SURFACE WATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Un-ionized ammonia (mg/l) Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l S3 1-Jun < < < < S3 22-Nov < < < < < S3 11-May < < < S3 13-Nov < < < < < S3 15-May < < < < < S3 12-Nov < < < < < S3 22-May < < < < < S3 15-Aug S3 5-Nov < < < < S3 22-Dec S3 30-Apr < < < < S3 8-Sep S3 5-Nov < < < < S3 27-Apr < < < < < S3 24-Aug S3 28-Nov < < < < < S3 26-Apr < < < < < S3 29-Aug S3 7-Nov < < < < S3 FD 7-Nov < < < < S3 24-Apr < < < < S3 16-Aug S3 27-Nov < < < < S3 23-May < < < < S3 19-Nov < < < < 7 S3 29-Apr < 0.15 < < < < < 0.7 S3 29-Oct < < < < S3 28-Apr < < < < 0.1 < S3 2-Nov * < < < < S3 3-May < 0.15 < < < < < < < 0.7 S3 FD 3-May < 0.15 < < < < < < < 0.7 S3 8-Nov < < < < S3 FD 8-Nov < 0.15 < < < < < < Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 2 of 3

62 TABLE 9: SURFACE WATER QUALITY (PIL, SIL) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx Location Sample Date Alkalinity mg/l Ammonia mg/l Un-ionized ammonia (mg/l) Barium mg/l Boron mg/l Cadmium mg/l Calcium mg/l Chemical Oxygen Demand mg/l Chloride mg/l Chromium (total) mg/l Conductivity us/cm Cyanide (free) mg/l S10 11-May < < < S10 13-Nov < < < < < S10 15-May < < < < < S10 12-Nov < < < < < S10 22-May < < < < < S10 15-Aug <0.001 S10 5-Nov < < < < S10 22-Dec S10 30-Apr < < < < S10 8-Sep S10 5-Nov < < < < S10 27-Apr < < < < < S10 24-Aug S10 28-Nov < < < < < S10 26-Apr < < < < S10 29-Aug S10 7-Nov < < < < < S10 24-Apr < < S10 16-Aug S10 27-Nov < < < < < S10 23-May < < < < S10 19-Nov < < < < < S10 FD 19-Nov < < < < < S10 29-Apr < 0.15 < < < < < 0.7 S10 29-Oct < 0.15 < < < < < 0.7 S10 28-Apr < 0.15 < < < < < < 0.1 < S10 2-Nov * < < < < < S10 3-May < 0.15 < < < < < < < < 0.7 S10 8-Nov < < < < < 0.1 < < 0.7 SG-M1 4-May < < < < < SG-M1 8-Nov < < < < < 0.1 < SG-M3 4-May < 0.15 < < < < < < 0.1 < < < < < 0.7 SG-M3 8-Nov < 0.15 < < < < < < < 0.7 Cyanide mg/l Dissolved Organic Carbon mg/l Hardness mg/l Iron mg/l Lead mg/l Magnesium mg/l Manganese mg/l Nitrate mg/l Nitrite mg/l ph unitless Potassium mg/l Sodium mg/l Sulphate mg/l Total Dissolved Solids mg/l Total Kjeldahl Nitrogen mg/l Page 3 of 3

63 TABLE 10: SURFACE WATER QUALITY (VOCs) Waste Management Ottawa Landfill CB2533 Tables 2011.xlsx 1,1,1,2-Tetrachloroethane mg/l 1,1,1-Trichloroethane mg/l 1,1,2,2-Tetrachloroethane mg/l 1,1,2-Trichloroethane mg/l 1,1-Dichloroethane mg/l 1,1-Dichloroethene mg/l 1,2-Dichlorobenzene (o) mg/l 1,2-Dichloroethane mg/l 1,2-Dichloropropane mg/l Location Sample Date S1 22-May-03 < < < < < < < < < < < < < < < < < < < S1 23-May-03 < < < < < < < < < < < < < < < < < < S1 30-Apr-04 < < < < < < < < < < < < < < < < < < < S1 27-Apr-05 < < < < < < < < < < < < < < < < < < < S1 26-Apr-06 < < < < < < < < < < < < < < < < < < < S1 24-Apr-07 < < < < < < < < < < < < < < < < < < < S1 23-May-08 < < < < < < < < < < < < < < < < < < S1 FD 23-May-08 < < < < < < < < < < < < < < < < < < < S1 29-Apr-09 < < < < < < < < < < < < < < < < < < < S1 28-Apr-10 < < < < < < < < < < < < < < < < < < < S1 03-May-11 < < < < < < < < < < < < < < < < < < < S3 22-May-03 < < < < < < < < < < < < < < < < < < < S3 30-Apr-04 < < < < < < < < < < < < < < < < < < < S3 27-Apr-05 < < < < < < < < < < < < < < < < < < < S3 26-Apr-06 < < < < < < < < < < < < < < < < < < < S3 24-Apr-07 < < < < < < < < < < < < < < < < < < < S3 23-May-08 < < < < < < < < < < < < < < < < < < < S3 29-Apr-09 < < < < < < < < < < < < < < < < < < < S3 28-Apr-10 < < < < < < < < < < < < < < < < < < < S3 03-May-11 < < < < < < < < < < < < < < < < < < < S3 FD 03-May-11 < < < < < < < < < < < < < < < < < < < ,3,5-Trimethylbenzene mg/l 1,3-Dichlorobenzene (m) mg/l 1,4-Dichlorobenzene (p) mg/l Benzene mg/l Bromodichloromethane mg/l Bromoform mg/l Bromomethane mg/l Carbon Tetrachloride mg/l Chlorobenzene mg/l Chlorodibromomethane mg/l Page 1 of 2

64 TABLE 10: SURFACE WATER QUALITY (VOCs) Waste Management Ottawa Landfill Chloroethane mg/l Chloroform mg/l Chloromethane mg/l Cis-1,2-Dichloroethene mg/l Cis-1,3-Dichloropropene mg/l Ethylbenzene mg/l Ethylene Dibromide mg/l m+p-xylene mg/l CB2533 Tables 2011.xlsx Location Sample Date S1 22-May-03 < < < < < < < < < < < < < < < < < S1 23-May-03 < < < < < < < < < < < < < < < < < < S1 30-Apr-04 < < < < < < < < < < < < < < < < < < S1 27-Apr-05 < < < < < < < < < < < < < < < < < < S1 26-Apr-06 < < < < < < < < < < < < < < < < < < S1 24-Apr-07 < < < < < < < < < < < < < < < < < < S1 23-May-08 < < < < < < < < < < < < < < < < < < S1 FD 23-May-08 < < < < < < < < < < < < < < < < < S1 29-Apr-09 < < < < < < < < < < < < < < < < < < S1 28-Apr-10 < < < < < < < < < < < < < < < < < < S1 03-May-11 < < < < < < < < < < < < < < < < < < S3 22-May-03 < < < < < < < < < < < < < < < < < S3 30-Apr-04 < < < < < < < < < < < < < < < < < < S3 27-Apr-05 < < < < < < < < < < < < < < < < < < S3 26-Apr-06 < < < < < < < < < < < < < < < < < < S3 24-Apr-07 < < < < < < < < < < < < < < < < < < S3 23-May-08 < < < < < < < < < < < < < < < < < < S3 29-Apr-09 < < < < < < < < < < < < < < < < < < S3 28-Apr-10 < < < < < < < < < < < < < < < < < < S3 03-May-11 < < < < < < < < < < < < < < < < < < S3 FD 03-May-11 < < < < < < < < < < < < < < < < < < Methylene Chloride mg/l o-xylene mg/l Styrene mg/l Tetrachloroethylene mg/l Toluene mg/l Trans-1,2-dichloroethene mg/l Trans-1,3-dichloropropene mg/l Trichloroethene mg/l Trichlorofluoromethane mg/l Vinyl Chloride mg/l Page 2 of 2

65 TABLE 11: LANDFILL GAS PROBE MONITORING Waste Management Ottawa Landfill Methane Concentrations (%) CB2533 Tables 2011.xlsx Gas Probe GM1 GM2 GM3 GM4 GM5 GM6 GM7 GM8 Depth of Monitor (m) Depth Top of Screen (m) Jan Feb Mar Apr May Jun Jun Jul Jul Oct

66 TABLE 12: SUMMARY OF WEEKLY QUANTITIES OF WASTE RECEIVED January to December 2011 Waste Management, Ottawa Landfill Week ending (Saturday) CB2533 Tables 2011.xlsx Special Waste used as Cover (tonnes) Waste Disposed at Landfill (tonnes) 08-Jan Jan Jan Jan Feb Feb Feb Feb Mar Mar Mar-11 1, Mar-11 2, Apr-11 1, Apr-11 1, Apr-11 1, Apr Apr-11 1, May-11 2, May-11 2, May-11 1, May Jun Jun Jun , Jun Jul Jul Jul Jul , Jul , Aug , Aug Aug , Aug , Sep Sep Sep Sep Oct Oct Oct Oct Oct Nov Nov Nov Nov Dec Dec Dec Dec Dec Annual Totals 20, ,188.72

67 WM OTTAWA LANDFILL RICHARDSON SIDE ROAD WILLIAM MOONEY ROAD CARP ROAD CAZ PROPERTIES WM PROPERTY BOUNDARY CAZ BOUNDARY N FIGURE: 1 SITE LOCATION MAP WM - OTTAWA LANDFILL SITE B2533-SLM-11

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111