Public Information Session Community Government of Behchoko Type A - - PowerPoint PPT Presentation

▶
public information session
SMART_READER_LITE
LIVE PREVIEW

Public Information Session Community Government of Behchoko Type A - - PowerPoint PPT Presentation

Jun 12, 2023 246 likes •657 views

Public Information Session Community Government of Behchoko Type A Water Licence Application November 10, 2014 Purpose of Presentation Community Government of Behchoko is applying to the Wekwezhi Land and Water Board for a Type A

slide-1
SLIDE 1

Public Information Session

Community Government of Behchoko Type A Water Licence Application November 10, 2014

slide-2
SLIDE 2

Purpose of Presentation

  • Community Government of Behchoko is applying to the

Wekweèzhiì Land and Water Board for a Type A Water Licence

  • Current Water Licence is set to expire in November 2014
  • Presentation intended to inform community members
  • f the facilities and activities covered under the pending

Water Licence

slide-3
SLIDE 3

Proposed New Type A Water Licence

Chronology

November 2014 Old Water Licence expires and anticipate new Water Licence to be granted October 2014 September 2014 WLWB waives Public Hearing, however requires Public Information Session Summer 2014 Spring 2014 Summer 2013 New Landfill Assessment & Design Application Made to WLWB Technical Session and Information Requests Final Review comments WLWB meeting Anticipate Issue

  • f draft Water

Licence

slide-4
SLIDE 4

Items and Facilities Covered Under the proposed Type A Water Licence

  • Rae Waste Water Treatment Facility (Lagoon & Collection)
  • Edzo Water Water Treatment Facility (Lagoon & Collection)
  • Rae Water Intake and Treatment Plant
  • Edzo Water Intake and Treatment Plant
  • Solid Waste Management Facility (closure of existing landfill and development of

adjacent site)

  • Spill Contingency Plans
  • Hazardous Waste Handling
  • Surveillance Network Program (SNP)
slide-5
SLIDE 5

Facilities Subject to Water licence Overview

slide-6
SLIDE 6

Rae WWTF location

slide-7
SLIDE 7

Rae WWTF Operations

Residential Storage Tanks Piped to Transfer Station Vacuum Truck Cell 2: 54,800 m3 Cell 1: 54,750 m3 Wetland/Frank Channel Emergency Overflow Weir Emergency Overflow Weir June/October via Gate Valve #1 June/October via Gate Valve #2

slide-8
SLIDE 8

Rae WWTF – Adjustments to SNP Locations

slide-9
SLIDE 9

EDZO WWTF Location

slide-10
SLIDE 10

Edzo WWTF Operations

Lift Station Control Box Cell 2: 1,790 m3 Cell 1: 1,790 m3 2.1 ha Wetland 4 x 20m Dredged Channel

slide-11
SLIDE 11

Proposed New Solid Waste Facility - History

2006 Study – Dillon Assessed 3 sites for suitability as landfills

  • Site 1 – Area off access road to Rae
  • Site 2 – Area off Russel Lake access road
  • Site 3 – Quarries off Hwy #3

Site 2 was considered the most favourable, however it was recommended that further investigation be completed considering other locations that may be more suitable

slide-12
SLIDE 12

Proposed New Solid Waste Facility - History

2009 Study – Aboriginal Engineering Ltd. (AEL)

Assessed 5 sites for suitability as landfills

  • Site 1 – Area off old access road to Rae
  • Site 2 – Area off Hwy #3
  • Site 3 – Tower Hill Quarry site
  • Site 4 – Quarry site
  • Site 5 – Existing Landfill

Site 2 was selected as the best location and was recommended for construction of a new solid waste facility

slide-13
SLIDE 13

Proposed New Solid Waste Facility – Location

slide-14
SLIDE 14

Surface Water Flow and Drainage

slide-15
SLIDE 15

Proposed New Solid Waste Facility – Site Characterization

Geology

  • The proposed site is characterized by deposits of sands, silts

and clays overlain by an organic layer, interspersed with areas of bedrock outcropping.

  • Overburden thickness at the proposed site ranges from 0.3

m to greater than 2.0 m.

  • Permafrost was encountered in 8 of 9 test pits and ranged in

depth from 0.55 m to 2.0 m

  • Site not favourable for trench style landfilling
slide-16
SLIDE 16

Proposed New Solid Waste Facility – Planning Criteria Assessment

slide-17
SLIDE 17

Proposed New Solid Waste Facility – Planning Criteria Assessment

slide-18
SLIDE 18

Proposed New Solid Waste Facility – Design

  • 20 year planning horizon requires ~105,000 m3 of total

compacted waste volume (1.5kg/person/day @ compaction rate of 300 kg/m3)

  • Proposed site footprint is 245 m * 80 m
  • Based elevation of site is 160.5 masl with a maximum elevation
  • f 167.5 masl (limits visibility from road)
slide-19
SLIDE 19

Proposed New Landfill Footprint

slide-20
SLIDE 20

Proposed New Solid Waste Facility – Design

Site preparation will require:

  • Land clearing/grubbing
  • Cut/fill to maintain consistent base elevation
  • Berm construction
  • Granular pad construction
slide-21
SLIDE 21

Landfill Design – Site Preparation

slide-22
SLIDE 22

Proposed New Solid Waste Facility – Filling Plan

Proposed that Site be filled using the lift method

  • Landfill constructed out of cells (blocks) laid out in

strips, lifts and phases.

  • Width of strips and height of lifts subject to

dimensions of active face.

slide-23
SLIDE 23

Lift Landfill Components

PHASE 1 FOOTPRINT CELLS PHASE 2 FOOTPRINT ACTIVE FACE

slide-24
SLIDE 24

Landfill Design – Lift and Phase Approach

slide-25
SLIDE 25

Landfill Design – Cross Sections

slide-26
SLIDE 26

Proposed New Solid Waste Facility – Opportunities for Extended Life

A substantial extension of the life of the landfill may be achieved through the implementation of landfill compaction. This would require a capital investment to acquire suitable machinery, however could substantially increase the site life of the facility.

slide-27
SLIDE 27

Closure and Reclamation Plan Existing Site

slide-28
SLIDE 28

Closure and Reclamation Plan Existing Site

slide-29
SLIDE 29

Closure and Reclamation Plan Existing Site

slide-30
SLIDE 30

Closure and Reclamation Plan Existing Site

slide-31
SLIDE 31

Closure and Reclamation Plan Existing Site

slide-32
SLIDE 32

Existing Landfarm - History

Chronology

2014 Depth delineation and monitoring – leading to rehabilitation 2013 WESA/TEES engaged for feasibility study of landfarm 2009 2004 Landfarm constructed to manage PHC impacted soil AEL Study and partial rehabilitation

slide-33
SLIDE 33

Existing Land Farm Assessment

slide-34
SLIDE 34

Existing Land Farm Assessment

slide-35
SLIDE 35

Existing Landfarm– Feasibility Study Recommendations

1. Material thickness should be decreased to a maximum of 0.5 m to promote volatilization of

  • hydrocarbons. This can be achieved by expanding the land farm footprint, or removing soil

that is compliant with the applicable regulations (could be used as cover for the disposal site). 2. The land farm liner should be reconstructed or replaced with an impermeable geosynthetic liner to prevent seepage of PHCs into clean soil below and into the groundwater table. 3. Additional soil delineation below the land farm should be undertaken to assess the extent of deeper impacts. 4. Installation of monitoring wells should be conducted to assess impacts to groundwater. 5. Monthly aeration of impacted soil should be conducted during the snow-free months using the equipment (allu bucket) already available to the public works department. 6. Annual monitoring of PHCs, nutrients and microbial colonies in the treatment area should be conducted at the start of the treatment season and at the end to assess the progress of remediation.

slide-36
SLIDE 36

Spill Contingency Plans and Hazardous Waste Management

  • Details
slide-37
SLIDE 37

SNP Program

  • Details on frequency

and purpose

  • Image of SNP locations
slide-38
SLIDE 38
slide-39
SLIDE 39
slide-40
SLIDE 40

QUESTIONS ?