Long Term Maintenance and Monitoring Plan Sydney Tar Ponds and Coke Ovens Remediation Project Open Hearth Park and Harbourside East Sydney, Nova Scotia Nova Scotia Lands. Inc. Province of Nova Scotia Nova Scotia Lands Inc. March 2015 Long Term Maintenance and Monitoring Plan 210.05479.000000 REVISION SUMMARY Revision NSE Approval Date of Issue Comments (Date) NOTES: • LTMM Plan to be reviewed annually by April 1 of each year. • Nova Scotia Environment to review document prior to any re-issue. i Nova Scotia Lands Inc. March 2015 Long Term Maintenance and Monitoring Plan 210.05479.000000 TABLE OF CONTENTS REVISION SUMMARY ................................................................................................................I 1.0 INTRODUCTION ................................................................................................................4 2.0 ABOUT THE LTMM ...........................................................................................................5 2.1 Administrative Provenance .................................................................................... 5 2.2 Effective Date ..........................................................................................................8 2.3 Organization of the LTMM ...................................................................................... 8 2.4 Purpose of the LTMM .............................................................................................8 2.5 Maintenance of the LTMM ...................................................................................... 9 2.6 NSE Approval Conditions .................................................................................... 11 3.0 ROLES AND RESPONSIBILITIES .................................................................................. 12 3.1 HCPI/NSLI President ............................................................................................. 12 3.2 NSLI Chief Operations Officer .............................................................................. 12 3.3 Executive Director of Operations ........................................................................ 13 3.4 Manager of Environmental Services.................................................................... 13 3.5 Site Manager ......................................................................................................... 13 3.6 Engineer, Maintenance and Monitoring .............................................................. 13 3.7 Environmental Management Consultant ............................................................. 14 3.8 NSLI/HCPI Personnel, Consultants, Contractors and Tenants .......................... 14 3.9 Environmental Training and Orientation ............................................................. 14 4.0 LONG TERM MAINTENANCE AND MONITORING PROVISIONS ................................. 15 4.1 Cap / Monolith Monitoring .................................................................................... 15 4.2 Surface Water ........................................................................................................ 18 4.2.1 Channel Monitoring ..................................................................................... 23 4.2.1.1 Pressure Relief Well Monitoring .................................................................... 24 4.3 CO8 Water Treatment Plant .................................................................................. 24 4.4 Groundwater ......................................................................................................... 25 4.4.1 Groundwater Sampling and Monitoring ..................................................... 28 4.4.2 Screening Criteria ........................................................................................ 28 4.4.3 Review of Groundwater Monitoring Program ............................................ 28 4.4.4 Trigger Thresholds and Anomalies ............................................................ 29 4.5 Infrastructure Maintenance .................................................................................. 29 4.6 Site Covenants ...................................................................................................... 29 4.7 Reengagement of Partners .................................................................................. 30 4.8 Reporting ............................................................................................................... 30 4.9 Data Management ................................................................................................. 30 5.0 ALTERATIONS TO ORIGINAL LTMM PROGRAM ......................................................... 30 5.1 Cap Monitoring ..................................................................................................... 31 5.2 Marine Monitoring ................................................................................................. 31 6.0 QUALITY CONTROL/QUALITY ASSURANCE (QA/QC) ................................................ 31 6.1 Field QA/QC........................................................................................................... 31 6.1.1 Field Notes ................................................................................................... 31 6.1.2 Follow-up Activities ..................................................................................... 32 6.2 Sample Labels ....................................................................................................... 32 6.3 Sample Handling ................................................................................................... 32 6.4 Blind Field Duplicates and Relative Percent Difference ..................................... 33 6.5 Field Blank Samples ............................................................................................. 34 6.6 Trip Blank Sample................................................................................................. 35 ii Nova Scotia Lands Inc. March 2015 Long Term Maintenance and Monitoring Plan 210.05479.000000 6.7 Laboratory Quality Control .................................................................................. 35 7.0 HEALTH AND SAFETY PLAN ........................................................................................ 36 FIGURES Figure 1: LTMM Revision Process ......................................................................................... 11 Figure 2: Organizational Chart ............................................................................................... 12 TABLES Table 2-1: LTMM Commitments ...............................................................................................7 Table 4-1: Cap Monitoring Targets and Inspection Protocols ............................................. 17 Table 4-2: Surface Water Remedial Objectives ..................................................................... 18 Table 4-3: Surface Water Monitoring Program ...................................................................... 21 Table 4-4: Channel Monitoring – Groundwater Elevations .................................................. 24 Table 4-5: Groundwater Remedial Objectives ....................................................................... 26 Table 6-1: Alert limits for Analytes in Water .......................................................................... 34 DRAWINGS Drawing 1 Site Plan Drawing 2 Open Hearth Park Capping Detail Drawing 3 Harbourside East Capping Detail Drawing 4 Open Hearth Park Inspection Route Drawing 5 Harbourside East Inspection Route Drawing 6 Surface Water Sampling Locations Drawing 7 Groundwater Monitor Well Locations APPENDICES Appendix A Agreement Appendix B Environmental Contingency Plan Appendix C Inspection and Maintenance Logs Appendix D Standard Operating Procedures (SOPs) Appendix E Final Confirmation Survey References Appendix F Screening Criteria and 95% UCL Data Appendix G Summary of LTMM Groundwater Monitor Wells Appendix H Site Covenants iii Nova Scotia Lands Inc. March 2015 Long Term Maintenance and Monitoring Plan 210.05479.000000 1.0 INTRODUCTION This Long Term Maintenance and Monitoring Plan (LTMM) provides guidance for the long-term Maintenance and Monitoring of the former Tar Ponds and Coke Ovens sites located in Sydney, Nova Scotia. Implementation of the plan will follow the completion for the Sydney Tar Ponds and Coke Ovens Remediation Project that began in fall 2006 and was completed in summer 2013. The majority of work proposed under the future land use plan, was completed by September 2013 and the remaining work will be completed in spring 2014. A fully integrated iron and steel plant was established in Sydney, Nova Scotia in 1899 and operated for approximately 90 years, at which time it was converted to a “mini mill” based on electric arc furnace technology. The steel plant ceased operations in 2000. The coke ovens operations were operational between 1901 and 1988 and provided coke for the steel manufacturing, producing by-products such as coal, tar and benzene that were used for manufacturing industrial products. Historic use of the site and waste management practices (i.e. storage of tar in tanks and lagoons, disposal of wastewater to brooks and nearby estuary, backfilling/land reclamation practices) resulted in significant impacts to soil, groundwater, and sediment in Muggah Creek (the “Tar Ponds”). During the 20th century, approximately 60% of Muggah Creek and a portion of Sydney Harbour were