Aklavik Bridge and Culvert Waste Management Plan

Transcription

1 Aklavik Bridge and Culvert Waste Management Plan Hamlet of Aklavik SEPTEMBER 27, 2017 ISSUED FOR USE ISSUED FOR USE FILE: 704-TRN.VHWY

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3 TABLE OF CONTENTS 1.0 INTRODUCTION Company Name, Project Location and Effective Date Purpose and Scope of Waste Management Plan Applicable Legislation Federal Territorial PROJECT DESCRIPTION Project Setting WASTE TYPES AND MANAGEMENT TRAINING... 4 CLOSURE... 5 REFERENCES... 6 FIGURES Figure 1 Bridge and Culvert Site Location Plan Figure 2 Bridge Site Plan i

4 REVISION HISTORY Version Date Revisions/Comments 0 June 1, 2017 Original version of Aklavik Bridge and Culvert Waste Management Plan. Submitted to Hamlet of Aklavik for review. 1 July 19, 2017 Issued for Review Inuvialuit Water Board (IWB) 2 September 27, 2017 Revised as per IWB comments August 3, Issued for Use Environmental Impact Screening Committee and IWB ii

5 1.0 INTRODUCTION This Waste Management Plan (WMP) for the Hamlet of Aklavik s Bridge and Culvert Project (Project) was developed in general accordance with the Mackenzie Valley Land and Water Board s Guidelines for Developing a Waste Management Plan (MVLWB 2011). The Hamlet of Aklavik (referred to hereafter as The Hamlet ) is committed to undertaking waste collection, storage, transportation and disposal in a safe, efficient and environmentally compliant manner, by actively encouraging and implementing the four R s of waste management, namely: reduction, recovery, reuse, and recycling. The Hamlet embraces source reduction as a means of minimizing the quantities of wastes that are produced. Reducing the amount of wastes that are produced is a sound business principle as well as being environmentally responsible. Once implemented, this WMP will be reviewed and updated in the future as appropriate to match the main construction, operations and eventual reclamation and closure phases of the Project. 1.1 Company Name, Project Location and Effective Date The Hamlet is the proponent for the proposed Project. Key contact information for this project is as follows: Hamlet of Aklavik PO Box 88 Aklavik, NT X0E 0A0 Main Contact: Fred Behrens, Senior Administrative Officer Hamlet of Aklavik PO Box 88 Aklavik, NT X0E 0A0 Phone: Fax: saoaklavik@permafrost.com The effective date of this WMP is September 27, Purpose and Scope of Waste Management Plan The goals of the WMP for this project are to minimize the generation of wastes, employ best practices for the effective handling and disposal of waste, and to comply with all applicable legislation, regulations and authorizations for the duration of the Project. To achieve these goals, the WMP: Identifies the types of waste expected to be generated mainly during the short-term construction phase; Identifies procedures to promote reduction, reuse, and recycling of waste materials; Identifies practices and procedures for waste handling, collection, storage, transport, and disposal; and Identifies waste monitoring and mitigation procedures. 1

6 1.3 Applicable Legislation Specific legislation, regulations and guidelines related to waste management that may have applicability to the Project include: Federal Canadian Environmental Protection Act (1999); Waters Act S.N.W.T (2014); Canada Wide Standards for Petroleum Hydrocarbons (PHC) in Soil (CCME 2001); Transportation of Dangerous Goods Act and Regulations (1992); Work Site Hazardous Materials Information System (WHMIS) Safety Act; and Territorial Lands Act (1985) Territorial Guidelines for Developing a Waste Management Plan (MVLWB 2011). Northwest Territories (NWT) Environmental Protection Act (1988); NWT Public Health Act (1988); NWT Transportation of Dangerous Goods Act (1990); NWT Waters Act (last amended April 1, 2014); and Used Oil and Waste Fuel Management Regulations (GNWT 2003). However, it should be noted that very few wastes will be generated by this Project and will be primarily limited to the generation of small quantities of construction-related refuse, domestic garbage and sewage. As a result, most of the legislation identified will have limited applicability to this Project. 2.0 PROJECT DESCRIPTION The initial purpose of the proposed Project is to provide the residents of Aklavik with safe, overland access across the creek to the foothills of the Richardson Mountains to pursue their traditional and cultural lifestyles (including traditional hunting, fishing, subsistence harvesting, trapping and gathering) throughout the year. Eventually the bridge will provide access to the existing Willow River gravel source, as well as to sites just outside the delta that are proposed for a new sewage lagoon and solid waste disposal facility. Currently, overland access to the mountains is limited to the winter only, or in periods of low water levels via a temporary, and makeshift, floating bridge constructed of lumber at the bridge site. Access at the culvert site is limited to a winter snow bridge over an old rusted culvert lying below a sunken steel grate lying across the waterway. The Project involves the installation of a new pre-fabricated bridge across an un-named creek to provide year-round access to the lands west of the Hamlet via an existing trail. All components of the pre-fabricated bridge are already on site. In addition, a culvert will be installed to provide year-round access across an un-named intermittent remnant drainage stream located in a wetland area. It is understood that most of the construction materials for the new culvert crossing are also already on site. The proposed bridge site is located approximately 3.8 km west along the traditional trail from its intersection with Bickish Avenue, and about 6.3 km west of the intersection of Tardiff Road and Bickish Avenue on the western 2

7 outskirts of the Hamlet. The bridge site is located along the existing traditional access to the Richardson Mountains. The proposed culvert is located approximately 450 m before the bridge on the same trail. (See Figure 1 for site plan). The proposed Project will be centred at: Bridge: Latitude: N; Longitude: W. Culvert: Latitude: 68º13'52.3" N; Longitude: 135º9'38.87"W. Installation of the bridge remains subject to authorization and funding. On the assumption that both of these prerequisites are achieved, installation of the bridge piles and thermosyphons/thermoprobes could be completed in the winter of 2017/2018, with the remainder of the bridge being completed in the winter of 2018/2019. The overall timeframe for installation of the bridge is about four months to complete. The overall site footprint for the bridge is expected to be 10,400 m 2 (see Figure 2). Subject to authorization, Installation of the culvert is expected to take place during the spring of 2018 (May) at a time when the ground is still frozen but the waterway is open. The overall site footprint for the culvert and associated ramp is expected to be approximately 500 m 2. The activities associated with the Project will include: Minor clearing of bridge site and access road to accommodate equipment and hauling of remaining bridge and culvert materials along ~2.5 km of Gwich in Owned Lands traditional trail. Note that most of the bridge site access has already been cleared, and most of the bridge and culvert materials are already on site. Prepare site and staging area(s) for remaining materials and equipment. Possible installation of double walled, leak proof Enviro-Tank fuel storage tanks at the bridge site. Possible installation of temporary diesel generator set (genset) units to provide site power during construction of the bridge. Bridge construction will include installing piles, thermosyphons/thermoprobes, placement of fill, fill-retaining structures for bridge approaches, riprap, etc. and installation of pre-cast bridge structure. Environmental, geotechnical, structural, and other monitoring may be required during the work. Culvert construction will include lowering the culvert onto a bed of crush rock and geogrid membrane and subsequently covered over with approximately 50 cubic metres of coarse gravel/cobble fill material brought to the site from the Hamlet's stockpile. Removal of construction wastes and other materials (primarily wood at the bridge site, and steel at the culvert site) that have been used to cross the streams in the past. It is anticipated that these materials will be disposed of at the Aklavik solid waste site, or reused/recycled as applicable. Removal of excess fill placed on site, down to top of existing vegetation layer. Loosening of soil to facilitate natural revegetation. The proposed clear-span bridge is intended to remain in place for the foreseeable future. As a result, there is currently no plan for the possible future decommissioning of this bridge. All construction wastes will be removed from the site following completion of the bridge construction program and will be transported to Aklavik for re-use or for disposal in the local landfill. 3

8 2.1 Project Setting The proposed Aklavik Bridge and culvert site is located in the Mackenzie River Delta, in a region characterized by low-relief islands up to about 7.0 m above mean sea level, and shallow meandering channels. The site is considered to be at the northern limit of the discontinuous permafrost zone and is located near the north end of a channel between two small lakes. The channel generally flows south to north, except when the flow backs up during spring freshet. The crests of the stream banks at the bridge site immediately south of the existing crossing are at about m elevation, with local topographic high points on nearby ridges and knolls at about 5.6 to 6.3 m elevation. For further information on the Project setting, please refer to the documents entitled, Project Description Report for the Design and Construction of the Proposed Aklavik Bridge Updated September, 2017 and the Aklavik Trail Culvert Installation Project Description Report (2017). 3.0 WASTE TYPES AND MANAGEMENT A material is considered to be a waste when it can no longer be used for its original intended purpose. The types of wastes anticipated to be generated for this project are mainly limited to: Garbage All site garbage will be removed and transported as needed throughout the job to the Aklavik Landfill. Debris from previous bridging attempts will also be hauled to the Aklavik landfill, or be reused/recycled as appropriate in Aklavik. Details of construction are unknown at this time, therefore the amount of garbage / recycled material generated is unknown. An estimate at this time is up to 100 kg/day for normal daily construction-related garbage. Domestic Sewage During construction, a porta-potty will be available on site for sewage generated by the construction crew. The porta-potty will be pumped out as needed and the sewage transported to the Aklavik sewage lagoon for disposal. The portable toilet facilities will be removed once construction is complete. No sewage facilities are planned for the infrequent site visits during operation and maintenance. No grey water will be generated on site. The number of crew on site is unknown at this time, therefore the amount of sewage generation is unknown. An estimate at this time is up to 50 L/day but will vary greatly depending on construction activities at the site and number of crew required during each construction activity. Trees and Brush It is anticipated that the amount of trees and brush to be cleared for this Project will be minimal, as much of the site and access road has been cleared already. Any trees and brush will be windrowed along the side of the Aklavik trail or hauled to the Aklavik landfill if/as needed. Overburden No overburden will be generated. Frequency of waste collection is unknown at this time and will take place on an as-needed basis. An estimate at this time is twice per week but will vary depending on construction activities at the site. 4.0 TRAINING As part of their orientation, all on-site personnel will receive basic environmental and waste management training, including: Practices for reducing waste generation on site; Managing food wastes to minimize wildlife attraction; and Containment and storage of wastes for subsequent transportation to an approved waste disposal facility. 4

9 In addition, all personnel involved in the handling of hazardous materials (e.g. diesel fuel) will receive Workplace Hazardous Materials Information System (WHMIS), Personal Safety and Protection and Emergency Response training. CLOSURE This WMP outlines the Hamlet of Aklavik s plan for managing wastes associated with the Aklavik Bridge and Culvert Project. The Hamlet of Aklavik embraces source reduction as a means of minimizing the quantities of wastes that are produced. Reducing the amount of wastes that are produced is a sound business principle as well as being environmentally responsible. The WMP is a living document which will be updated based on regular yearly reviews including management reviews, incident investigations, regulatory, or Project-specific protocol changes. The information presented herein is current as of September Respectfully submitted, On behalf of the Hamlet of Aklavik Prepared by: Reviewed by: Alesha McKinnon, P.Eng. Rick A.W. Hoos, R.P. Bio. Civil Engineer Senior Regulatory Specialist Direct Line: Direct Line: Alesha.Mckinnon@tetratech.com Rick.Hoos@tetratech.com /sy 5

10 REFERENCES Mackenzie Valley Land and Water Board (MVLWB) Guidelines for Developing a Waste Management Plan. March 31, 2011 Nehtruh-EBA Consulting Ltd., Project Description Report for the Design and Construction of the Proposed Aklavik Bridge Updated September Originally prepared for the Hamlet of Aklavik. March, Nehtruh-EBA File: Y Nehtruh-EBA Consulting Ltd., Aklavik Trail Culvert Installation Project Description Report. Prepared for the Hamlet of Aklavik. September, Nehtruh-EBA File: 704-TRN.VHWY

11 FIGURES Figure 1 Bridge and Culvert Site Location Plan Figure 2 Bridge Site Plan

12 Q:\Vancouver\GIS\TRANSPORTATION\VHWY\VHWY \Maps\VHWY _Figure01_Site.mxd modified 9/26/2017 by morgan.zondervan W e s t C h a n n e l A k l a v i k C h a n n e l Proposed Bridge")!( Proposed Culvert Ak lavik Traditional Trail P e e l C h a n n e l Aklavik LEGEND ") Proposed Bridge!( Proposed Culvert NOTES Base data source: Image from Google; DigitalGlobe (2004) PROJECTION UTM Zone 8 Scale: 1:40, Metres FILE NO. VHWY _Figure01_Site.mxd DATUM NAD83 AKLAVIK BRIDGE AND CULVERT Site Location Plan STATUS ISSUED FOR USE CLIENT OFFICE DWN CKD APVD REV Tt-VANC MEZ SL AM 0 DATE PROJECT NO. September 26, 2017 TRN.VHWY Figure 1

13 APPROXIMATE AREA OF EMBANKMENT FOOTPRINT = 2,700 M2 APPROXIMATE AREA OF BRIDGE SITE = 10,400 M APPROXIMATE AREA OF EMBANKMENT FOOTPRINT = 2,500 M OF FILL EDGE OF ICE APPROX. TOE APPROX. TOE OF FILL CREEK ROAD TO AKLAVIK ROAD EDGE OF ICE CHANNEL FLOW CREEK FROZEN AT TIME OF SURVEY TREELINE Q:\Vancouver\Transportation\TRN.VHWY\Projects\TRN.VHWY03035 Aklavik Bridge\CADD\Design\Options\ _Aklavik_Topo_R0_DESIGN-Option1.dwg [FIGURE 2] July 13, :32:02 pm (BY: MATSUDA, STAN) LEGEND TREE LINE TOP OF BANK EDGE OF ICE 0 10X VERTICAL EX. 25 Scale: 1: 500 (metres) NOTES INFORMATION PROVIDED IS BASED ON SURVEY BY MACKENZIE DELTA GEOMATICS DRAWING: _AKLAVIK_TOPO_R0.dwg COORDINATES IN UTM 8 NAD83 (CSRS) 2010 GRID. ELEVATIONS CGVDD28 DATUM HT2.0 GEOID MODEL. CONTOUR INTERVAL: 0.25 M CONCEPTUAL ONLY NUM DATE DWN CKD APR DESCRIPTION NUM DATE APR DESCRIPTION REVISIONS DRAWING STATUS PERMIT PROFESSIONAL SEAL CLIENT EBA PROJECT No. VHWY DATE: MAY 18, 2017 AKLAVIK BRIDGE BRIDGE SITE PLAN OFFICE VANC DES - CKD SHEET No. DWN APP 1 of 1 SM REV 0 STATUS A DRAWING Figure 2