080121-08MN006-Sabina Hackett River Project Proposal ... - NIRB

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Description of the Existing Environmentgeneral overall seasonal trend in overall monthly lake averages of chlorophyll a concentrationsbeing slightly higher in July compared to the other months.AbundancePhytoplankton abundance was highly variable between lakes and basins, ranging from a low of
Description of the Existing EnvironmentTaxonomic compositionMost stream periphyton communities were heavily dominated by diatoms, which comprised ~90% of the periphyton cells. Sunken Lakes Outflow and Reference Lake A outflow did,however, have significant numbers of other chrysophyta, which made up approximately a thirdof their algal abundances.6.2.5.3 Lake ZooplanktonZooplankton, the heterotrophic component of aquatic plankton, are an important link in theaquatic food web; being consumers of phytoplankton and prey to many fish species.Zooplankton samples were collected from 27 lakes in the Hackett River study area in August,2007, including two reference lakes.AbundanceWithin the study area zooplankton abundances averaged ~ 1,300 organisms/m 3 , with lows of ~70 organisms/m 3 at Cleaver Lake, to highs of ~ 2,500 organisms/m 3 in the Boot Basin lakes BigToe, Hungrat and Dog. Although zooplankton abundances were highest in Boot Basin lakes, ingeneral, zooplankton abundance varied equally within and between watersheds.Taxonomic CompositionIn general, lake zooplankton communities were heavily dominated by copepods, althoughPlomia rotifers were also common. Cladocera tended to be scarce to non-existent in most lakes.Saddle Lake, Anne and Camp lakes had noticeably atypical zooplankton communitycompositions in comparison to other lakes in the study area. Saddle Lake zooplanktoncommunities were predominantly Flosculariaceae rotifers, with few copepods or other rotifera.Anne, and to a lesser extent Camp Lake, were almost exclusively composed of cyclopoidcopepods, a common taxon in the study area, but typically lower in abundance than othercopepods.Arctic Fairy shrimp (Polyartemiella hazeni), large brachiopods that typically inhabit ephemeralhabitats in the absence of fish, were found in three lakes in the study area; Bat Lake, AffleckLake, and Saddle Lake. Bat Lake and Affleck Lake were two of the few lakes in the study arealacking fish. Burbot were found in Saddle Lake, but their small size and low density may meanpredation pressure is low enough to allow P. hazeni to persist.6.2.5.4 Lake Benthic InvertebratesBenthic macroinvertebrates (benthos) are organisms greater than ½ a millimetre in size, lacking aback-bone, that inhabit lake and stream bottoms. Being in close contact with the sediments ofthese habitats as well as feeding on algae, bacteria, and detritus within these systems makebenthos very responsive to environmental changes. In addition to their direct contact withpossible contaminants, benthos are generally less motile than fish, providing a better indicator oflocal conditions. In addition to their use as indicator species, benthic organisms are a veryimportant food source for fish, particularly in streams, making their abundances an importanthabitat quality variable.January 2008 Hackett River Project – Project Proposal Sabina Silver CorporationReport Version B.1 6–5 Rescan Environmental Services Ltd. (Proj. #833-2)
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EXECUTIVE SUMMARYTM
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Executive SummaryA summary of the p
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Executive SummaryIdentification of
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TABLE OF CONTENTSTM
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Table of Contents2.4.5.2 Boot Lake
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Table of Contents6.2.4 Birds ......
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Table of Contents9.1.3 Environmenta
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Table of Contents6.2-4 Species of F
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1. INTRODUCTIONTM
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Ellice RiverAI No. a16725f-EISJob N
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Introduction• Working with the ap
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IntroductionTable 1.3-1Major Permit
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IntroductionThe Project does not in
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2. Project Description2.1 Project L
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gis no. 833-2-05 Job No. 833-2 Dece
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Project Description2.1.3 Project Ne
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Project Description2.4 Mine Plan2.4
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Project DescriptionThe Upper Rhyoli
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Project DescriptionA portion of the
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Project Descriptionthe first phase
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Project Description2.4.5.2 Boot Lak
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Project Descriptionaccessories and
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Project Descriptionneutralizing cal
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Project Descriptionprefeasibility s
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Project Description2.5.4 Zinc Flota
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Project Description2.6.1.5 Site Pow
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Project DescriptionThe electrical r
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Project DescriptionThe airstrip wil
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Project DescriptionTable 2.6-1Produ
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Project Description2.7.1.4 ClosureC
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Project DescriptionDrainage from op
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Project Descriptionmultiple-culvert
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Project Description2.8.3.1 Location
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Project DescriptionTypical bridge d
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Project Description2.8.4 Overland T
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Project Description• Desalination
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Project Description2.9.5.2 Water Co
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Project Descriptionrequire bridge c
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3. Training and Employment3.1 Human
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Identification of Potential Environ
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8. IDENTIFICATION OF POTENTIALCUMUL
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Identification of Potential Cumulat
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Identification of Potential Cumulat
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9. ENVIRONMENTAL PLANSTM
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Environmental Plans• Occupational
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Environmental Plans• to restore l
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Environmental Plansbenefits of root
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ReferencesAdrian D’Hont, GNWT ENR
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ReferencesFriesen, B.F. 1975. Poten
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ReferencesMartens, H. E. 2007. Ekat
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ReferencesRescan Environmental Serv
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ReferencesWalton, L. R., H. D. Cluf
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A1 - PART 1 FORM (ENGLISH)TM
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A3 - PART 1 FORM (INUINNAQTUN)TM
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Non-Technical Project Proposal Desc
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ᐱᓕᕆᐊᒃᓴᒧᑦ (ᐅᔭᕋ
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A6 - NON-TECHNICAL DESCRIPTION (INU
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A7 - PART 2 FORM: PROJECT SPECIFICI
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Project Specific Information Requir
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Project Specific InformationThe fol
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Description of the Existing Environ
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APPENDIX BSITE PHOTOSTM
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Braided outflow of Cleaver Basin du
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Near shore habitat of Anne Lake. Th
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P.O. BOX 119GJOA HAVEN, NU X0B 1J0T
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Licence Number: 2BE-HAK0709LICENCE
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Licence Number: 2BE-HAK0709PART A:S
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Licence Number: 2BE-HAK0709hold all
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Licence Number: 2BE-HAK0709and plan
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Licence Number: 2BE-HAK07092. All a
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Licence Number: 2BE-HAK0709only in
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Licence Number: 2BE-HAK0709iii.the
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Effective June 16, 2006Map 1 - West
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Effective June 16, 2006Easternmost
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Effective June 16, 2006The planned
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Effective June 16, 2006Camp Inciner
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Effective June 16, 2006on the prope
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NIRB Screening Yes No If no, date
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Effective June 16, 2006Name (Print)
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080121-08MN006-Sabina Hackett River Project Proposal ... - NIRB

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