Appendix F – rnulr ssessent etr ec APPENDIX F rnulr ssessent etr ec GOVERNMENT OF NUNAVUT COMMUNITYSUB-BASE AND GOVERNMENT SERVICES GRANULAR RESOURCE STUDY – ARVIAT, NUNAVUT REPORT FEBRUARY 2012 ISSUED FOR USE – REVISION 1 EBA FILE: Y14101361 LIMITATIONS OF REPORT This report and its contents are intended for the sole use of Government of Nunavut, Community and Government Services and their agents. EBA, A Tetra Tech Company, 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 Government of Nunavut, Community and Government Services, 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. EBA’s General Conditions are provided in Appendix A of this report EBA Engineering Consultants Ltd. operating as EBA, A Tetra Tech Company PO Box 2244, 201, 4916 - 49 Street Yellowknife, NT X1A 2P7 CANADA p. 867.920.2287 f. 867.873.3324 GRANULAR RESOURCE STUDY – ARVIAT, NUNAVUT EBA FILE: Y14101361 | FEBRUARY 2012 | ISSUED FOR USE – REVISION 1 EXECUTIVE SUMMARY This report presents the findings from an evaluation of the granular resource needs and availability for Arviat, Nunavut. The purpose of the project was to identify sources of granular material that could be developed to meet the community’s needs. A community needs analysis was conducted and concluded that Arviat requires more than 2.4 million cubic metres of granular material3 over the next 10 years. Of this total, 70% is unprocessed pit run, and approximately 700,000 m must be processed to meet engineering specifications. The community’s largest need for granular material is for the hamlet expansion, and the most immediate need is for a new reservoir. Prior to the site investigation EBA identified potential sources of aggregate by reviewing existing documentation pertaining to aggregate resources 20 km north and 10 km south of Arviat. EBA visited the site twice – August 1 to 5 and September 26 to 30, 2011. During these site investigations the current aggregate sources were evaluated and potential new sources were examined. Arviat’s current aggregate source is the Airport Esker3 which lies about 2 km south of the hamlet. As of August3 2011 there was approximately 56,000 m of 20 mm minus crush stockpiled, and about 168,000 m of sand with some gravel remaining in the western edge of this esker. Six aggregate prospects were examined during the site investigations. Prospect #1 is 5 km northwest of the community and can be used for short-term need for pit run fill. Prospect #2 is 3 km northwest of the community on the Maguse Road. This prospect containsapproximately30%oversizematerialthatcould be processed to produce surfacing and sub-base aggregate. Prospects #3 and #4 contain gravel and sand that meets gradation requirements for sub-base. However, these prospects are close to water bodies and should be developed cautiously to avoid mobilization of sediment. Either Prospect #5 – Wolf Esker or Prospect #6 – Maguse Esker should be developed to meet the community’s long-term aggregate needs. Maguse Eskerisaccessiblebyroad,isalreadydisturbed,andis more than twice the size of Wolf Esker. A winter or all-weather road must be built to access the aggregate in Wolf Esker. An ice road would cost about $250,000 per year to construct, and an all-weather road would cost about $18,720,000 to build. However, this prospect is only 10 km from the community, so haulage unit costs are less than half of that for Maguse Esker. Based on the preliminary environmental assessment, Prospect #6 –Maguse Esker may represent the granular source with the least environmental risk due to the existing access road, level of human disturbance in the area, and estimated size of the granular source. Further consultation and assessment work would be required prior to proceeding with the development of either of these long-term prospects. EBA can providefurtherassistancewithdevelopmentuponrequest. i Y14101361 IFU - REVISION 1_13 February 2012 GRANULAR RESOURCE STUDY – ARVIAT, NUNAVUT EBA FILE: Y14101361 | FEBRUARY 2012 | ISSUED FOR USE – REVISION 1 TABLE OF CONTENTS EXECUTIVE SUMMARY........................................................................................................................... i 1.0 INTRODUCTION ........................................................................................................................... 1 1.1 General ..................................................................................................................................................1 1.2 Background............................................................................................................................................1 1.3 Scope of Work .......................................................................................................................................1 2.0 METHODOLOGY ........................................................................................................................... 2 2.1 Desktop Terrain Analysis.......................................................................................................................2 2.2 Site Investigation ...................................................................................................................................3 2.3 Aggregate Assessment..........................................................................................................................3 2.4 Laboratory Testing Program ..................................................................................................................3 2.5 Community Needs Analysis...................................................................................................................5 2.6 Cost Estimate Analysis ..........................................................................................................................5 2.7 Environmental Assessment ...................................................................................................................5 2.8 Equipment Recommendation ................................................................................................................6 3.0 SITE DESCRIPTION....................................................................................................................... 6 3.1 Location .................................................................................................................................................6 3.2 Climate...................................................................................................................................................6 3.3 Geology..................................................................................................................................................7 3.4 Permafrost .............................................................................................................................................8 3.5 Vegetation and Wildlife ..........................................................................................................................8 4.0 COMMUNITY NEEDS ANALYSIS................................................................................................ 9 4.1 Hamlet Expansion................................................................................................................................10 4.2 Reservoir..............................................................................................................................................11 4.3 Hamlet Office and RCMP Detachment................................................................................................11 4.4 Solid Waste Facility .............................................................................................................................11 4.5 Potential All-Weather Road .................................................................................................................11 5.0 CURRENT AGGREGATE SOURCES ......................................................................................... 11 6.0 AGGREGATE PROSPECTS......................................................................................................... 13 6.1 Aggregate Prospect #1: Qamutyuaqtalik.............................................................................................14 6.1.1 Location and Accessibility.......................................................................................................14 6.1.2 Description..............................................................................................................................14 6.1.3 Aggregate Assessment...........................................................................................................14 6.1.4 Potential Environmental Impacts ............................................................................................14 6.1.5 Potential Community Concerns ..............................................................................................15 6.1.6 Aggregate Recommendation..................................................................................................15 6.2 Aggregate Prospect # 2 .......................................................................................................................15 ii Y14101361 IFU - REVISION 1_13 February 2012 GRANULAR RESOURCE