Blackburn Wastewater Treatment Plant Upgrade Study

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Section 4.0 - Blackbm Treatment Options 4.3 OPTION 3 - USE EXISTING BLACKBURN WWTP FOR EQUALIZATIONlSTORAGE AND TRANSFER ALL FLOWS TO LANSDOWNE ROAD WWTP 4.3.1 Outline In this option the existing sewage lagoons would be converted to flow equalizationktorage basins, and all flows transferred for treatment at the Lansdowne Road WWTP. A schematic representation of this option is presented in Figure 4.3. The principal benefit of this option is that the peak flows being transferred from the Blackburn sewage wllection area to the Lansdowne Road WWTP would be attenuated somewhat. An VI reduction program is to be initiated and completed to reduce the volume of wastewater being transferred during wet weather and snowmelt conditions. The existing Mackus Road pumpstation would be upgraded. It is believed that the Lansdowne Road WWTP has sufficient capacity to handle the projected future hydraulic and BODflSS loadings from the Blackburn sewage wllection area. Key activities or capital works associated with this option are as follows: Implement L'l reduction program. 0 Modify lagoons for use as flow equalizatiodstorage basins. 0 Upgrade Mackus Road pumpstation to handle projected increased flows. Construct trunk gravity sewer to transfer all flows ihm Blackburn sewerage area to Lansdowne Road WWTP. Upgrade downtown sewage collection system to handle increased flows from Blackburn sewerage area. Key technical issues assmiated with this option are as follows: Extent to which the I/I reduction program is able to reduce peak wet weather flows must be evaluated. City must maintain operation of storage basins; O&M costs of equalizatiodstorage basins are only slightly lower than O&M costs for the existing treatment lagoons. Major capital works needed to transfer flows to Lansdowne WWTP and modify lagoons.
Initiate Ill reduction program and complete over 5/10 year period; assess PWWF based on results. 0 Modify existing Blackburn WWTP to operate as storage basins. a Route all flow to Lansdowne Road WWT P. Pipeline route (m m) from Blackbum storage basins to Correctional Centre tiein. Assess conditionlcapacity of existing Mackus Road PS. @ Assess conditionlcapacity of existing sewage conveyance system through downtown area. a Assess impact of added sewage flow on Lansdowne Road WWTP /Ti LEGEND: ------ Exist. Sanitary Collection Mains Blackbum Sanitary Collection Area City of Prince George ckburn Wastewater Treatment Plant Treatment Options Study I OPTION 3 Figure 4.3
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BLACKBURN WASTEWATER TREATMENT PLAN
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Table of Contents SECTION TITLE PAG
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SECTION 1 STUDY BACKGROUND AND OBJE
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Section 1.0 -Project Background and
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Section 1.0 - Project Background an
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City of Prince George - Decision Wo
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City of Prince George - Decision Wo
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MINUTES OF MEETING PR~ECT NAME: Bla
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Blackburn WWTP Treatment Options Op
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Nores. Annual O&M cost for Blackbum
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Blackbum WWTP Treatment Options Opt
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APPENDIX A STANTEC CONSULTING LTD.
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5.0 CONCLUSIONS I '\ -. 5.1 RESULTS
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CITY OF PRINCE GEORGE Forcemain fro
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Section 6.0 -Recommended Option Key
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Section 6.0 -Recommended Option Com
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SECTION 6.0 RECOMMENDED OPTION 6.1
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SECTION 5.0 EVALUATION OF OPTIONS 5
Page 49 and 50: Section 5.0 -Evaluation of Options
Page 55 and 56: Section 5.0 - Evahation of Options
Page 57 and 58: Section 3.0 - Evaluation of Options
Page 59 and 60: SECTION 4.0 BLACKBURN TREATMENT OPT
Page 61 and 62: Section 4.0 - Blackbum Treatment Op
Page 65 and 66: Section 4.0 - Blackburn Treatment O
Page 67 and 68: Initiate llt reduction program and
Page 71 and 72: Section 4.0 - Blackbm Treatment Opt
Page 77 and 78: CITY OF PRINCE GEORGE Scale= $:I00
Page 83 and 84: :ITY Of PRINCE GEORGE Existing Chlo
Page 93 and 94: SECTION 4.0 BLACKBURN TREATMENT OPT
Page 99: Section 4.0 - Blackbum Treatment Op
Page 105 and 106: SECTION 3.0 AUDIT OF EXISTING FACIL
Page 107 and 108: Section 3.0 -Audit of exist in^ Fac
Page 109 and 110: Section 3.0 -Audit of Existing Faci
Page 111 and 112: SECTION 2.0 III MITIGATION MEASURES
Page 113 and 114: Section 2.0 - UI Mitigation Measure
Page 115 and 116: APPENDIX E FLOW CALCULATIONS FOR SE
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Blackburn Wastewater Treatment Plant Upgrade Study

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