Fort Reliance Weather Station Remediation Project, NT
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Final Project Monitoring Plan Fort Reliance Weather Station Remediation Project, NT Directory of Federal Real Property ID: 20920 Federal Contaminated Sites Inventory ID: 00002376 PRESENTED TO Environment and Climate Change Canada and Public Services and Procurement Canada (Project No. R.099939.001) DECEMBER 2, 2019 FINAL FILE: 704-ENW.EENW03031-11 Tetra Tech Canada Inc. 14940 - 123 Avenue Edmonton, AB T5V 1B4 CANADA Tel 780.451.2121 Fax 780.454.5688 FINAL PROJECT MONITORING PLAN | FORT RELIANCE WEATHER STATION REMEDIATION PROJECT, NT FILE: 704-ENW.EENW03031-11 | DECEMBER 2, 2019 | FINAL Revision History Revision Description Revised By (Initials) Revision Date 1 Initial Version ii Project Monitoring Plan, Ft. Reliance, NT - Final.docx FINAL PROJECT MONITORING PLAN | FORT RELIANCE WEATHER STATION REMEDIATION PROJECT, NT FILE: 704-ENW.EENW03031-11 | DECEMBER 2, 2019 | FINAL TABLE OF CONTENTS 1.0 INTRODUCTION .......................................................................................................................... 1 1.1 Purpose .................................................................................................................................................. 1 1.2 Site Description ...................................................................................................................................... 2 1.3 Remediation Design and Decommissioning .......................................................................................... 3 1.3.1 Remediation Work .................................................................................................................... 3 1.3.2 Radiation Survey ...................................................................................................................... 4 1.3.3 Contaminated Soils ................................................................................................................... 4 2.0 PROJECT MONITORING PLAN .................................................................................................. 5 2.1 General Requirements ........................................................................................................................... 6 2.2 Surface Water Monitoring ...................................................................................................................... 6 2.2.1 Monitoring Locations ................................................................................................................. 6 2.2.2 Field Data Collection and Testing ............................................................................................. 7 2.2.3 Sampling Methods .................................................................................................................... 7 2.2.4 Surface Water Quality Criteria .................................................................................................. 8 2.2.5 Contingency Plans .................................................................................................................. 10 2.2.6 Reporting Requirements ......................................................................................................... 10 2.3 Groundwater Monitoring ...................................................................................................................... 11 2.3.1 Risk-Management Objectives ................................................................................................. 11 2.3.2 Monitoring Locations ............................................................................................................... 11 2.3.3 Field Data Collection and Testing ........................................................................................... 11 2.3.4 Sampling Methods .................................................................................................................. 12 2.3.5 Water Quality Guidelines ........................................................................................................ 12 2.3.6 Contingency Plans .................................................................................................................. 14 2.4 Hydrogen Peroxide Treatment............................................................................................................. 14 2.4.1 Rationale ................................................................................................................................. 14 2.4.2 In Situ Hydrogen Peroxide Treatment .................................................................................... 15 2.5 Physical Stability Monitoring ................................................................................................................ 15 2.5.1 Objectives and Components................................................................................................... 15 2.5.2 Methodology ........................................................................................................................... 16 2.5.3 Contingency Plans .................................................................................................................. 17 2.6 Vegetation Monitoring .......................................................................................................................... 17 2.6.1 Reclamation Goals ................................................................................................................. 18 2.6.2 Monitoring and Reporting ....................................................................................................... 18 2.6.3 Management Strategies, Control Options, and Restoration ................................................... 19 2.6.4 Adaptive Management ............................................................................................................ 19 3.0 CLOSURE .................................................................................................................................. 20 REFERENCES .................................................................................................................................... 21 iii Project Monitoring Plan, Ft. Reliance, NT - Final.docx FINAL PROJECT MONITORING PLAN | FORT RELIANCE WEATHER STATION REMEDIATION PROJECT, NT FILE: 704-ENW.EENW03031-11 | DECEMBER 2, 2019 | FINAL LIST OF TABLES IN TEXT Table 1-2: LUP Condition 68 Requirements and Pertinent PMP Report Sections .................................. 1 Table 1-3: Summary of 2019 Remediation Plan ..................................................................................... 4 Table 2-1: PMP Monitoring Requirements and Frequency ..................................................................... 5 Table 2-2: Surface Water Quality Evaluation Criteria ............................................................................. 9 Table 2-3: LTM Comparison Criteria .................................................................................................... 13 Table 2-4: Severity Ratings .................................................................................................................. 17 Table 2-5: Extent Classification ............................................................................................................ 17 APPENDIX SECTIONS FIGURES Figure 1 Site Location Plan Figure 2 Site Overview Figure 3 AEC 1 Monitoring Locations Figure 4 AEC 5 Monitoring Locations Figure 5 AEC 6 Monitoring Locations APPENDICES Appendix A Tetra Tech’s Limitations on the Use of this Document Appendix B Report on the 2016 Survey of Exotic Plants along Northwest Territories Highways iv Project Monitoring Plan, Ft. Reliance, NT - Final.docx FINAL PROJECT MONITORING PLAN | FORT RELIANCE WEATHER STATION REMEDIATION PROJECT, NT FILE: 704-ENW.EENW03031-11 | DECEMBER 2, 2019 | FINAL LIMITATIONS OF REPORT This report and its contents are intended for the sole use of Public Services and Procurement Canada, Environment and Climate Change Canada, and their agents. Tetra Tech Canada Inc. (Tetra Tech) does not accept any responsibility for the accuracy of any of the data, the analysis, or the recommendations contained or referenced in the report when the report is used or relied upon by any Party other than Public Services and Procurement Canada and Environment and Climate Change Canada, or for any Project other than the proposed development at the subject site. Any such unauthorized use of this report is at the sole risk of the user. Use of this document is subject to the Limitations on the Use of this Document attached in Appendix A or Contractual Terms and Conditions executed by both parties. v Project Monitoring Plan, Ft. Reliance, NT - Final.docx FINAL PROJECT MONITORING PLAN | FORT RELIANCE WEATHER STATION REMEDIATION PROJECT, NT FILE: 704-ENW.EENW03031-11 | DECEMBER 2, 2019 | FINAL 1.0 INTRODUCTION Tetra Tech Canada Inc. (Tetra Tech) has prepared this Final Project Monitoring Plan (PMP) following site-wide remediation and decommissioning of the Fort Reliance Weather Station, in Fort Reliance, Northwest Territories (herein referred to as the “Site”). The Site is currently held by Environment and Climate Change Canada (ECCC). The Mackenzie Valley Land and Water Board (MVLWB) issued Type A Land Use Permit (LUP) MV2019X0004 to ECCC for the onsite remediation and decommissioning work on May 1, 2019. The work was subsequently completed by Englobe between July 2019 and October 2019. This PMP was prepared in accordance with LUP condition 68 requiring the submission of a PMP to the MVLWB for approval.