Scoping Document for the 5 Wing Goose Bay Remediation Project
Total Page:16
File Type:pdf, Size:1020Kb
SCOPING DOCUMENT FOR THE 5 WING GOOSE BAY REMEDIATION PROJECT Project Leaders: DIRECTOR GENERAL ENVIRONMENT / ASSISTANT CHIEF of AIR STAFF Project Management Service Provider: DIRECTOR ENVIRONMENTAL ENGINEERING MANAGEMENT February 2008 Goose Bay Remediation Project Scoping Document TABLE OF CONTENTS 1.0 INTRODUCTION ......................................................................................................................... 1 1.1 Goose Bay Remediation Project ...................................................................................................... 1 1.2 Site Conditions................................................................................................................................. 1 1.3 Federal Environmental Assessment Framework.............................................................................. 2 1.4 Provincial Requirements.................................................................................................................. 5 1.5 Purpose of this Document................................................................................................................ 5 2.0 SCOPE OF PROJECT.................................................................................................................. 6 2.1 Works and Activities........................................................................................................................ 6 2.2 Environmental Management Plan.................................................................................................... 7 2.3 Health and Safety Plan..................................................................................................................... 7 2.4 Alternative Technologies................................................................................................................. 7 2.5 Schedule........................................................................................................................................... 8 3.0 SCOPE OF ENVIRONMENTAL FACTORS ............................................................................ 9 3.1 Environmental Factors..................................................................................................................... 9 3.2 Valued Environmental Components ................................................................................................ 9 4.0 SCOPE OF ASSESSMENT ........................................................................................................ 11 4.1 Scope of Factors............................................................................................................................. 11 4.2 EA Process..................................................................................................................................... 11 4.3 Assembling Environmental Baseline Information......................................................................... 12 4.4 Environmental Issues and VEC Identification............................................................................... 12 4.5 Effects of the Environment on the Project..................................................................................... 12 4.6 Temporal and Spatial Boundaries.................................................................................................. 12 4.7 Analysis of Environmental Interactions......................................................................................... 13 4.8 Assessment of Impacts/Effects ...................................................................................................... 13 4.9 Mitigation....................................................................................................................................... 13 4.10 Residual Effects and Determination of Significance ..................................................................... 14 4.11 Cumulative Impact Assessment..................................................................................................... 15 4.12 Monitoring and Follow-Up............................................................................................................ 15 5.0 PUBLIC PARTICIPATION/CONSULTATION...................................................................... 16 5.1 Environmental Assessment Consultation....................................................................................... 16 5.2 Public Comment on this Document ............................................................................................... 16 TABLES TABLE 2.1 Potential Remediation Technologies .................................................................................. 8 TABLE 2.2 Preliminary List of Valued Environmental Components (VECs)..................................... 10 TABLE 4.1 Typical Mitigation Measures for Other Cleanup Projects ................................................ 13 FIGURES FIGURE 1.1 General Site Location ......................................................................................................... 3 FIGURE 1.2 Generalized Locations of Contaminants............................................................................. 4 February 2008 Page i Goose Bay Remediation Project Scoping Document 1.0 INTRODUCTION 1.1 Goose Bay Remediation Project The United States Air Force (USAF) constructed the military base at Goose Bay in the 1940s. From 1976 to 1987 Public Works and Government Services Canada (PWGSC) and Transport Canada (TC) operated the Base on behalf of its tenants, the Canadian Forces (CF), USAF, and Allied Participants. In 1987, Goose Bay became a Canadian Forces Base (CFB) 5 Wing Goose Bay that continues to support Allied low level flight training. CFB 5 Wing Goose Bay is located in central Labrador at the southwestern limit of Hamilton Inlet approximately 200 kilometres inland from the Labrador coast (Figure 1.1). The historical activities associated with operating the Base have resulted in numerous contaminated sites. The overall purpose of the Goose Bay Remediation Project (GBRP) is reduction of human health and ecological risks from the existing contamination. The GBRP will address these issues through the following key objectives: • Complete site investigations to provide a comprehensive picture of site conditions; • To develop and implement a comprehensive remedial action plan for the entire site; • Oversee ongoing remedial work and options anlaysis at the Upper Tank Farm (UTF), the Survival Tank Farm (STF), and the South Escarpment (SES), concurrent to the investigation phase; and • Undertake “Due Diligence” remedial work where necessary. The remediation of contaminated soils, sediments, groundwater and surface water will primarily occur on federally owned land at 5 Wing Goose Bay. In some instances, contamination has crossed the DND boundary onto provincial and private lands, and it is possible that more off-site contamination will be identified as the GBRP proceeds. The Project will address any off-site contamination that exists as a direct result of historic base operations. The Department of National Defence (DND) (the Proponent) will act as the proponent for the GBRP and will be responsible for carrying out the Project. 1.2 Site Conditions Due to the remote location of the Base and the fact that environmental standards were different than those considered acceptable today, most of the waste materials generated were disposed of on the property until about the 1990's. This was commonplace and considered acceptable at the time. It is these waste disposal activities and miscellaneous releases of a variety of contaminants (e.g. petroleum hydrocarbons), combined with normal Base operations over the last 60+ years, that are now manifested in the environmental contamination that is documented on the Base (Figure 1.2). Contamination exists in soil, sediment, surface water, groundwater, and biota, both on the plateau (i.e. on the main Base) and in the surrounding environment at the toe of the escarpment and remote locations. The majority of contamination at the Base can be attributed to several sources. Major hydrocarbon plumes can be attributed to leaking underground and aboveground tanks, leaking or ruptured pipelines, and historical general management and containment practices. Heavy metals and other chemical contamination (e.g. polychlorinated biphenyls (PCBs), volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs)) are due to historical waste disposal practices and the existence of numerous dumpsites. February 2008 Page 1 Goose Bay Remediation Project Scoping Document While contamination at several of the sites is well documented (e.g. type, location and volume of affected media), the degree of impact at many of the sites is unknown, as evidenced by the investigation status of various sites (e.g. range from the initial testing phase to full-scale remediation). The primary contaminant sources/ groups found at 5 Wing Goose Bay include: • Petroleum hydrocarbons (BTEX/TPH); • Polycyclic aromatic hydrocarbons (PAHs); • Volatile organic compounds (VOCs); • Inorganics (metals); • Pesticides and polychlorinated biphenyls (PCBs); and • Non-hazardous and hazardous wastes in waste disposal sites. A brief characterization of natural features at and near the Project site is presented in the Project Description (January 2007). That document also includes a brief description of land uses and the communities, including Aboriginal peoples in the area. 1.3 Federal Environmental Assessment Framework The GBRP